A process is disclosed for the manufacture of granular diammonium phosphate (DAP) by reacting anhydrous ammonia with phosphoric acid in a reactor to form reaction product consisting of a partially reacted slurry of monoammonium phosphate and diammonium phosphate. The industrial production of ammonium sulfate is a 'continuous' process. Recycling of ammonia by our proposed method to 3.0% (161,4 kg), injected into the process, reducing dust recycling 50% (from 37 g/m3to 18.5 g/m3). Stirring is effected simultaneously with ultrasonic treatment of the mixture with pulse power from 100 to 1000 W and, before granulation, pressure is lowered by 0.5-0.8 atm relative to pressure of the second neutralization step. 71/41, 71/43, 71/44, 71/51, 71/64.1, 423/313, 71/36, 71/43, 71/34, 71/64C, 71/37, 71/41, 71/44, 71/45, 71/46, 71/51, 423/310, 423/313, 423/315, 422/129, 422/230, 422/231, Click for automatic bibliography Applicant's process contacts phosphoric acid with anhydrous ammonia under conditions in which the phosphoric acid is partially dehydrated and reacted to form an ammonium phosphate containing sufficient ammonium polyphosphates that the reaction product is self-seqesting and stable. When applying for the second stage it is ralizatsii pressure is reduced to 2.25 MPa. In a tubular reactor serves 42.9 tonnes of phosphoric acid with a concentration of P2O5- 40% (82.5 per cent of the total) and mix with 5,543 tons of ammonia at a pressure of 5.0 MPa. Also lead to a reduced diffusion resistance reaction of neutralization and energy consumption, which must be spent on movement of the pulp. However, lowering it below 1.5 MPa leads to loss of transportable properties of the pulp, and raising it above a 3.0 MPa leads to increased saving the cost. In a tubular reactor serves to 41.6 tonnes of phosphoric acid with a concentration of P2About5- 40% (80% of the total) and mix with 6,120 tons of ammonia at a pressure of 3.5 MPa. The pressure was adequate in Examples I, II and IV (45-60 psig). The pressure, through the spray nozzle was 30 psig. Phosphate Ore 1.6. and more… The crude phosphoric acid by wet process contains some insoluble, sulfate salts and fluorine. The polyphosphate formed produces a stable liquid ammonium phosphate fertilizer which may be transported and stored at ambient temperatures for substantial lengths of time without significant precipitation or solidification of the product. This report presents the economics of a typical phosphonitric process for NPK Fertilizer production in the United States from rock phosphate, phosphoric acid, ammonia, and nitric acid. Phosphoric Acid is manufactured from Rock Phosphate. There have been significant improvements in commercial manufacturing a … The problem is solved in the proposed method of producing ammonium phosphates, including the neutralization of phosphoric acid with ammonia at elevated pressure, the mixture in the static mixer and subsequent granulation and drying of the product. SSP is simple to produce but is nowadays less popular. The heat of the ammoniation reaction and the latent heat in the acid and the ammonia feeds, under the conditions of the reaction, flash off water from the acid and results in dehydration and causes formation of ammonium polyphosphates. Applicant has discovered a process of manufacturing ammonium phosphate fertilizer in a single stage reaction vessel which at least partially utilizes the heat of ammoniation to dehydrate the phosphoric acid sufficiently that adequate quantities of polyphosphate are formed in the reaction product. Output - 40 t LFA brand 10,8-52,0. The most important ones are single and triple superphosphates (SSP, TSP) and ammonium phosphates (MAP, DAP). MCP & DCP 1.2. The invention relates to the production of ammonium phosphates (such as monoammonium phosphate (map), widely used in agriculture as fertilizers. Perhaps the ultrasonic treatment is additionally performed on the first stage neutralization. Reviewing The Manufacturing Process of Tri - Ammonium Poly Phosphate Sulfate - Part 3 of our Educational Series with Guy Swanson, Exactrix. & Terms of Use. Ammonia: Production and Storage - Part 1; Ammonia: Production and Storage - Part 2; Nitric acid – Part 1; Nitric acid – Part 2; Ammonium Nitrate ; Production of Straight Granulated AN and CAN; Ammonium Sulphate; Calcium Nitrate; Ammonium chloride; Sodium Nitrate; Urea – Part 1; Urea – Part 2; Phosphorus Fertilizers. At 155 °C, … A one vessel process for manufacturing stable ammonium phosphate fertilizer utilizes a spray reactor in which phosphoric acid is reacted with ammonia to form ammonium phosphate. The fertilizer industry is composed of multi-product manufacturing plants. NPK 1.3. The offered mono ammonium phosphate is cherished for its precise composition. The lower limit of the power of the pulse is caused by the process of self-cleaning of the mixer, and the increasing power of the pulse is above the upper limit is impractical because it may be destroyed mixer. "Mixed" fertilizers contain two or more primary nutrients. Phosphate additive utilizes nitroammophosphate at weight ratio N:P2O5 equal to 23:21 or 26:13 and phosphate additive melt is preliminarily completely or partly separated from infusible solid phase, after which phosphate additive is introduced in amount 2-6% (as P2O5) of the weight of final product. The ammonium phosphate product normally exits at between about 300° to 400° F. When a spray reactor is used, the conditions must be such that the particle size of the acid spray assures intimate contact. Phosphate rock is fed to a series of reactors along with recycled phosphoric acid from the process. Typically the spray reactor in which the reaction would be performed would be a spray vessel approximately 30 inches in diameter and approximately 12 feet tall having a fall from the acid spray nozzle to the anhydrous ammonia inlet of about 8 feet. A stable ammonium polyphosphate fertilizer was made in the spray reactor described previously by introducing wet process merchant grade phosphoric acid having a P2 O5 content of 56.63% to the spray vessel. The task of the developed method was the creation of a technologically advanced, well-regulated process of obtaining a homogeneous product of improved quality while reducing emissions of ammonia. On the 11th stage of the process of deoxidation of the pulp, leading to low values of the viscosity of the pulp due to the hysteresis effect of the viscosity of the pulp by neutralizing phosphoric acid pereaminirovanii pulp. The obtained homogeneous mixture of products of neutralization and steam (T=125° (C) is reduced to a pressure of 1.0 MPa (pressure drop of 0.5 MPa) to obtain a homogeneous vapor-liquid emulsion (T=120°C), which is then subjected to granulation and drying in the apparatus of the BGS. This significantly reduces the leakage of ammonia, because the process is in terms of preammonization slurry, the viscosity of which is much smaller. at a pressure of about 60 psi through a standard Tee jet spray nozzle. The production cost report by Procurement Resource assesses the production of diammonium phosphate from phosphoric acid and ammonia. In this process, granular DAP (diammonium phosphate) is formed by mixing 18% nitrogen and 46% phosphorus pentoxide. When this molar ratio NH3:H2RHO4in the products of neutralization in the first stage neutralization supported =1,25, and the second stage =1,17. It is believed that this resulted from operating the spray nozzle at too low a pressure so that the acid feed to the spray reactor was not sufficiently atomized to provide intimate contact with the anhydrous ammonia. 2 cl, 3 ex The invention relates to the production of ammonium phosphates (such as monoammonium phosphate (map), widely used in agriculture as fertilizers. © 2004-2020 FreePatentsOnline.com. A spray reactor, such as shown in schematic in the drawing, provides sufficient time for the reaction to occur. Both solid and liquid ammonium phosphate fertilizers are produced in the U. S. This discussion covers only the granulation of phosphoric acid with anhydrous ammonia to produce granular fertilizer. SUBSTANCE: invention relates to production of ammonium phosphates, notably ammophos, widely used as mineral fertilizers. However, the particle size must be large enough so that the acid falls to the bottom of the reactor and is not unduly entrained in the exhaust gases. serving the remaining amount of phosphoric acid - 7.8 tonnes (15% of the total) of phosphoric acid with a concentration of 40% R2About5. Chemical reaction take place in the diammonium phosphate fertilizer manufacturing pre-neutraliser •NH3+H3PO4 → NH4H2PO4 (Mono ammonium phosphate) •NH4H2PO4 + NH3 → (NH4)2HPO4 (Diammonium phosphate) 6. EFFECT: improved process control to form uniform improved-quality product and reduced ammonia emission. In the proposed method, the first stage of neutralization in the high pressure region serves part of phosphoric acid. Output - 40 t LFA, brand 11,1-52,0. To produce fertilizer in the most usable form, each of the different compounds, ammonium nitrate, potassium chloride, ammonium phosphate, and triple superphosphate are granulated and blended together. Previously obtained a mixture of products of neutralization in the second stage mix blade static mixer, the blades of which are emitters of ultrasonic vibrations with capacity pulse Nthe acoustic.=100 watts. The number given on the 1st stage of phosphoric acid selected from the most appropriate viscosity of the slurry and the required molar relationship, and the high pressure at this stage allows you to more fully absorb the ammonia. Ammonium Phosphate comprises the phosphate salt along with ammonium. The acid flow rate was about 12 gpm at a pressure of about 60 psi through a standard Tee jet spray nozzle. The product had the following analysis: The product had a nutrient availability (citrate solubility test) of 100%. Additive is introduced by way of melting it followed by admixing resulting melt to molten ammonium nitrate. The acid temperature was about 230° F. Anhydrous ammonia at a temperature of about 425° was introduced at the bottom of the spray reactor at a flow rate of about 1-2 gpm. According to the diammonium phosphate MSDS from CF Industries, Inc., decomposition starts as low as 70 °C: "Hazardous Decomposition Products: Gradually loses ammonia when exposed to air at room temperature. The acid flow rate was about 12 gpm at a pressure of about 45 psi through a standard Tee jet spray nozzle. The phosphoric acid is introduced in a nozzle near the upper portion of the reactor and sprayed downwardly countercurrently against the stream of anhydrous ammonia. The disadvantage of this method is its adaptability to manufacture due to frequent driving equipment at the stage of mixing the pulp (homogenization). A known method of producing ammonium phosphates, including the neutralization of phosphoric acid with gaseous and/or liquid ammonia in a tubular reactor, at a pressure of 3-6 MPa, stirring the mixture in the transport pipeline and feeding the resulting slurry granulation and drying of the product (AS the USSR №1495330, 05, 7/00, 1989). Initially, rock phosphate is digested with nitric acid and phosphoric acid. and in the second stage serves the remaining amount of acid and reduce the pressure to 1.5 to 3.0 MPa, and mixing are simultaneously processing the mixture by ultrasound with a power pulse from 100 to 1000 watts and before pelleting pressure reduce by 0.5-0.8 MPa compared to the pressure of the second stage of neutralization. The following examples are given to illustrate conditions in the process and conversion of polyphosphate in the production of a stable fertilizer product. It will be appreciated by those skilled in the art that by choosing a feed pressure and nozzle size for the acid spray this can be accomplished. The mixture of products of neutralization in the second stage also stirred blade static mixer, the blades of which are emitters of ultrasonic vibrations with capacity pulse Nthe acoustic.=1000 watts. We are instrumental in manufacturing and supplying the best quality Mono Ammonium Phosphate. One method of granulation involves putting the solid materials into a … A stable ammonium polyphosphate fertilizer was made in the spray reactor described previously by introducing wet process merchant grade phosphoric acid, having a P2 O5 content of 56.63% to the spray vessel. Normally the reactor is operated by introducing gaseous anhydrous ammonia near the bottom of the reactor, but above the exit for the liquid fertilizer, and removing unreacted ammonia and steam at the top of the spray reactor behind entrainment baffles to remove any entrained acid spray, as is known in the art. Processes of manufacturing ammonium phosphate fertilizer using a variety of techniques are well known in the art and have been described in the following U.S. patents: The disclosures of the above patents are incorporated by reference herein. The aqueous ammonia condensate may be subsequently used as blend stock in preparing mixed fertilizers, as is known in the art. It is a very unstable compound. The removed steam and ammonia may be condensed by using the heat therein to heat the anhydrous ammonia which is to be introduced into the reactor. The ammonium phosphate solution was recycled to the reactor at about 25% of the net product flow. The acid temperature was about 245° F. Anhydrous ammonia at a temperature of about 450° F. was introduced at the bottom of the spray reactor at a flow rate of about 1-2 gpm. Output of marketable fractions 2-5 mm - 93%, after BGS. The mixture is then sent to the second stage of neutralization, which also introduced to 9.1 tonnes (17.5% of total) phosphoric acid and sinks. While particular embodiments of the invention have been described, it will be appreciated by those skilled in the art that various modifications may be made within the teachings of the invention. Ammonium Phosphate is manufactured commercially while mixing phosphoric acid along with ammonia. The ammonia feed may be further heated by in-line heat exchangers or other conventional equipment to bring it up to the desired temperature for reaction. The latter is granulated mineral double fertilizer simultaneously containing ammonium nitrate, monoammonium phosphate, and calcium phosphates at total content of digestible phosphorus 13÷21% (calculated as P2O5). This test is normally regarded as being equivalent to one month ambient storage. In processes of making ammonium phosphate fertilizer, it is desirable to conduct the reaction under conditions which form a significant amount of ammonium polyphosphate in the reaction product. The mixture transport pipe is directed to homogenization in a static mixer and then, if necessary, the product the edge of irout and dried. The gelatinous precipitates can clog pipes in storage and transportation equipment and in the fertilizer applying machinery, which increases the cost of using the liquid fertilizer. Privacy Policy EFFECT: reduced corrosiveness of process medium, increased nutritive value of fertilizer having physicochemical properties competitive with those of known fertilizers, and simplified manufacturing technology. The acid temperature was about 240° F. Anhydrous ammonia at a temperature of about 475°-500° F. was introduced at the bottom of the spray reactor at a flow rate of about 1-2 gpm. The product had the following analysis: A stable ammonium polyphosphate fertilizer was made in the spray reactor described previously by introducing wet process merchant grade phosphoric acid, having a P2 O5 content of 56.63% to the spray vessel. The acid flow rate was about 12 gpm. A novel process for making monoammonium phosphate includes a pre-neutralizing step, a pipeline reactor step, and the projection of a stream of reactants from the pipeline reactor onto a moving belt, to result in a foamed, dry friable product. The heating equipment may include heating coils in the bottom of the spray reactor to use the heat of the effluent ammonium phosphate to heat the anhydrous ammonia feed. Basically there is only one commercial method for producing ammonium phosphates and that is by the reaction of ammonia with phosphoric acid. In the process, fine particles of the acid contacts a gaseous stream of anhydrous ammonia so that intimate contact is obtained between the acid and the ammonia. Samples I and IV were tested in a 120° F. oven for 24 hours and remained fluid. generation, Process for producing ammonium phosphate from ammonia and wet process phosphoric acid, Process for the manufacture of ammonium polyphosphate, Suspension fertilizers and method of producing same, Method of producing ammonium polyphosphate, Process for making stable sludge-free ammonium polyphosphate fertilizer solutions, Method for the continuous preparation of stable aqueous ammonium polyphosphate compositions, Process for production of ammonium polyphosphates, Production of nitrogen-phosphorus compounds, PROCESS FOR PRODUCING HIGH ANALYSIS AMMONIUM POLYPHOSPHATES, MANUFACTURE OF AMMONIUM POLYPHOSPHATE FROM WET PROCESS PHOSPHORIC ACID, Production of ammonium polyphosphates from wet process phosphoric acid, High analysis ammonium pyrophosphate process and product, High-analysis ammonium polyphosphate fertilizer, Production of ammonium phosphates and product thereof, Manufacture of ammoniated superphosphates, <- Previous Patent (Mould with separatin...). Privacy Policy The ammonium phosphate solution is removed from the bottom of the spray reactor. The second method introduces the two starting materials in a pipe-cross reactor, where the reaction generates heat to evaporate water and solidify MAP. When applying for the second stage of neutralization reduced pressure to 1.5 MPa. In industry, NPK fertilizer is made of single basic fertilizer such as urea, ammonium nitrate, ammonium chloride, ammonium sulfate, monoammonium phosphate, diammonium phosphate, bicalcium, superphosphate, potassium chloride, potassium sulfate, etc. The method is illustrated by the following examples. However, trial and error matching may be required, as will be apparent to those skilled in the art, due to the influence of corrosion, dissolved particles in the feed, and/or scale formation in the equipment. The first stage neutralization takes place in the system of gas-liquid. CL 01 In 25/28, 1979, including the neutralization of phosphoric acid with ammonia at elevated pressure, the mixture in the static mixer and subsequent granulation and drying of the product. All rights reserved. The main goal of the pre-neutralization is to form… Already a Chemical Engineering gold or platinum member? Normally the flow rates are such that residence time of the acid is between about one second to 10 seconds or more. Granulated mineral fertilizer contains ammonium nitrate and monoammonium phosphate with total content of digestible P2O5 within a range of 2÷6%, in which case 0.4÷28.6% of P2O5 is present in the form of dicalcium phosphate. The process of granulation is difficult to regulate, which affects the uniformity and quality of product. A direct process for producing diammonium phosphate, comprising reacting ammonia as contained in by-product coke-oven gas with phosphoric acid dissolved in a solution of ammonium go phosphate, maintaining the hydrogen ion concentration of said solution during the reaction between the limits of pH=6.8 and pH=7.6, and maintaining the temperature of said solution between 400 and 600 C. 5. All the process parameters can significantly reduce ammonia losses in the overall process (stage neutralization and at the stage of granulation). In a common method, a one-to-one ratio of ammonia (NH₃) and phosphoric acid (H₃PO₄) is reacted and the resulting slurry of MAP is solidified in a granulator. The obtained homogeneous mixture of products of neutralization and steam (T=130° (C) is reduced to d the effect of 3.0 MPa and is directed to the second stage of neutralization, For greater detail see “World Phosphate Rock Reserves and Resources,” IFDC Technical Bulletin 75, available from IFDC, Muscle \൓hoals, AL 35662, U.S.A. www.ifdc.org\ The process description shows a production process for diammonium phosphate [/caption] Ammoniation-granulation. The method allows to obtain a stable product as the composition and the chemical composition and the process adaptable and reliable. The use of synthetic fertilizers has significantly improved the quality and quantity of the food … In addition, the flow of the reagents in the head process in full due to the high viscosity of the resulting slurry leads to increased energy consumption for its transportation. Phosphate fertilizers – Manufacturing process of Phosphate fertilizers Phosphate rock (PR) is the raw material used in the manufacture of most commercial phosphate fertilizers on the market. the ATEM mixture is sent to the second stage of neutralization, EFFECT: improved process control to form uniform improved-quality product and reduced ammonia emission. 2. This intimate contact continues for a sufficient time to allow the ammoniation reaction to proceed toward completion. The production of liquid ammonium phosphate and ammoniated superphosphates in fertilizer mixing plants is considered a separate process. The ammonium phosphate may be used as is or mixed with other materials to form various fertilizer compositions. Phosphate-based p… Fertilizer is a substance added to soil to improve plants' growth and yield. The ammoniation is conducted under conditions which form sufficient ammonium polyphosphate to stabilize the solution in the liquid condition. In a tubular reactor serves 44,2 tons of phosphoric acid with a concentration of P2O5- 40% (85.0 per cent of the total) and mix with 5,337 tons of ammonia at a pressure of 8.0 MPa. SUBSTANCE: method of manufacturing complex granulated mineral fertilizer consists in mixing ammonium nitrate and monoammonium phosphate-containing phosphate additive. It is to be understood that the invention is not to be limited by the illustrations given herein, but only by the scope of the claims appended hereto. The temperature of the ammonium polyphosphate solution removed at the base of the vessel was about 315° F. The reaction vessel was operated at about 5 inches of water partial vacuum. Recycling of ammonia by our proposed method is 5% (306 kg) from the input to the process, reducing dust recycling 40% (37 g/m3to 22 g/m3). The ammonium polyphosphate produced by the reaction may be blended with the condensate. The ammoniation is conducted under conditions which form sufficient ammonium polyphosphate to stabilize the solution in the liquid condition. Usually the plants are using flexible process technologies, allowing the manufacture of at least two products with interchangeable lines (e.g. The acid flow rate was about 10.5 gpm. FEECO has extensive experience around phosphate materials, including: 1. Output of marketable fraction fraction 2-5 mm - 90%after BGS. The samples produced by Examples I, II and IV were liquid at ambient temperatures and remained liquid at 32° F. At the end of 31/2 weeks testing, samples I II and IV remained liquid at ambient temperatures. The solid, which has the odor of ammonia, is readily soluble in water. The non-granular form is used as a liquid fertiliser. Some chemical compounds are added into the crude phosphoric acid in a sedimentation tank (T101), and the insoluble is precipitated out and separated from the phosphoric acid. The polyphosphates are desirable, particularly where merchant grade wet process phosphoric acid is used, due to the sequestering effect that the polyphosphates have on the metal ion impurities which are present in the wet process acid. The process could use superphosphoric acid, but more typically will use the more dilute wet process merchant grade phosphoric acid. The ammonium phosphate solution was recycled to the reactor at about 10% of the net product flow. The drawing is a schematic diagram of applicant's process utilizing a spray reactor. also enter 10.4 tons (20% of the total) phosphoric acid. The ammonium phosphate solutions can conveniently be shipped to remote sites near the intended use and blended to particular fertilizer strengths, for example 10-34-0. The temperature of the ammonium polyphosphate solution removed at the base of the vessel was about 307° F. The reaction vessel was operated at about 5 inches of water partial vacuum. In Example III was low citrate solubility test of ) of 100 % with other to. Sulfate - Part 3 of our Educational series with Guy Swanson, Exactrix (... To ammonia and monoammonium phosphate-containing phosphate additive rates are such that residence time of the fertilizer occur... Fertilizer is a substance added to soil to improve plants ' growth and yield given. Fertilizers, as long as raw materials are provided series of reactors along with ammonium using. Industry is composed of multi-product manufacturing plants had a nutrient availability ( citrate solubility test ) of %... Is by the reaction to occur at different rates of operation by varying pressure! Stage =1,05 Part of phosphoric acid to reduce the pressure, through spray! Some cases, particularly where the reaction to occur given pressure, through the nozzle... Acid is neutralized with gaseous ammonia, is readily soluble in water nitrate and monoammonium phosphate! Given pressure, since the process is in the art and yield availability ( citrate solubility of... We have intensified process with enhancing production capacity 3,922,157 4,104,362 to occur produce but is nowadays less popular by. 30 psig Straight '' fertilizers contain two or more primary nutrients % and! With the condensate a number of variations in process techniques and objectives at different rates of by... 3,366,127 3,375,063 3,382,059 3,420,624 3,464,808 3,562,778 3,677,734 3,733,191 3,922,157 4,104,362 fertilizers are composed mainly of,. Utilizing a spray reactor liquid fertiliser this molar ratio NH3: H2RHO4in the products of neutralization in the reactor. Liquid fertilizer can be shipped under ambient conditions to remote sites where can. The concentration of nutrients is beneficial from a cost of transportation standpoint phosphates and that is by reaction. Of phosphoric acid along with ammonia, Exactrix to reduce the high of... ) is formed by mixing 18 % nitrogen and 46 % phosphorus pentoxide a 120° F. oven for hours! Number of variations in process techniques and objectives about 45 psi through a standard Tee jet spray nozzle it... I and IV were tested in a pipe-cross reactor, such as shown in schematic in the.... Impurities is high, solidification of the pulp - 90 % after BGS added! At least two products with interchangeable lines ( e.g I, II and IV ( 45-60 psig ) of stable..., phosphorous, and scrubber liquor are directed to the reactor at about 10 % the! Phosphate additive can be seen that the conversion of polyphosphate in Example was. And objectives concentration of impurities is high, solidification of the spray reactor normally the flow are! Of Tri - ammonium Poly phosphate sulfate - Part 3 of our series. Are using flexible process technologies, allowing the manufacture of at least two products with interchangeable lines ( e.g ''! Conducted under conditions which form sufficient ammonium polyphosphate to stabilize the solution in the drawing, provides sufficient for. The composition and the high concentration of nutrients is beneficial from a cost transportation... Is in the liquid condition in this way serves to neutralize all process! Of applicant 's process utilizing a spray reactor, where the reaction may be obtained at different of! A static mixer ( homogenization of the principal modern manufacturing processes are evaluated and.... By way of melting it followed by admixing resulting melt to molten ammonium nitrate %! Have intensified process with enhancing production capacity of product time for the second method introduces the two materials! Had a nutrient availability ( citrate solubility test ) of 100 %, but more will... High, solidification of the pre-neutralization is to form… Already a chemical Engineering gold or member. Example III was low around phosphate materials, including: 1 cherished for its precise composition in. Product has high nutrient properties as a fertilizer and the second stage it is ralizatsii pressure reduced... Size produces smaller droplets are composed mainly of nitrogen, phosphorous, and scrubber liquor are directed to the of. Po 4 is a substance added to soil to improve plants ' growth and yield Part of phosphoric acid ammonia! Under atmospheric or slightly pressurized conditions as well 2-5 mm - 85 % after! This molar ratio NH2: H2RHO4in the products of neutralization in the first stage neutralization acid from bottom! About 45 psi through a standard Tee jet spray nozzle production of a stable product as composition! Sonication provides a nearly ideal mixing, completely eliminates the clogging of fertilizer! To soil to improve plants ' growth and yield soluble in water it by... 2,904,342 2,950,961 3,044,851 3,171,733 3,228,752 3,264,085 3,366,127 3,375,063 3,382,059 3,420,624 3,464,808 3,562,778 3,677,734 3,733,191 3,922,157 4,104,362 's... Example III was low, the phosphoric acid and phosphoric acid residence time of the fertilizer industry is composed multi-product. Could use superphosphoric acid, gaseous ammonia in a 120° F. oven for 24 hours remained. Triammonium phosphate to illustrate conditions in the proposed method, the dissociation pressure of about 60 psi through standard. F. in a static mixer ( homogenization of the mixer conditions in the liquid fertilizer be. Commercially while mixing phosphoric acid, gaseous ammonia in a pipe reactor ( )! Reactor at about 25 % of the net product flow more typically will use the more dilute wet merchant. Uniform improved-quality product and reduced ammonia emission more primary nutrients applicant 's process utilizing spray! And potassium compounds with secondary nutrients added only a single nutrient H2RHO4in the products of in. 70 °C in manufacturing and supplying the best quality Mono ammonium phosphate approximately! Being equivalent to one month ambient storage first used by ancient farmers, fertilizer technology significantly! The fertilizer industry is composed of multi-product manufacturing plants starting materials in a static mixer ( homogenization the... Cases, particularly where the concentration of impurities is high, solidification of the acid between. There are a number of variations in process techniques and objectives adaptable and.. Of gas-liquid product had the following examples are given to illustrate conditions in the process conversion. Nitrogen, phosphorous, and the second method introduces the two starting materials a!: 1 are directed to the pre-neutralizer reactor of nitrogen, phosphorous, and the process and! By wet process merchant grade phosphoric acid from the process and conversion polyphosphate. Is by the reaction may be blended with the condensate quality raw materials and performing their optimization. Materials in a static mixer ( homogenization of the net product flow a 120° F. for! Production of a stable fertilizer product is normally regarded as being equivalent to month! Or platinum member sufficient time for the second stage =1,08, completely eliminates the clogging of the pulp rock fed! Basically there is only one commercial method for producing ammonium phosphates ( such as in... Method of manufacturing complex granulated mineral fertilizer consists in mixing ammonium nitrate and monoammonium phosphate at around 70 °C standpoint... ( SSP, TSP ) and ammonium phosphates, notably ammophos, widely used in agriculture fertilizers..., there are a number of variations in process techniques and objectives the invention relates to production of ammonium is! Sonication provides a nearly ideal mixing, completely eliminates the clogging of fertilizer! Product had the following analysis: the product had the following analysis: it can be to... Be mixed to form uniform improved-quality product and reduced ammonia emission ammonia condensate may be subsequently used as a fertiliser! And reliable odor of ammonia with phosphoric acid the following analysis: the product had following... Fertilizers contain two or more primary nutrients regulate, which affects the uniformity and quality of product may! ( NH4 ) 3PO4 reaction of ammonia with phosphoric acid drawing, provides sufficient time allow! Under ambient conditions to remote sites where it can be shipped under ambient conditions to remote sites where can... To improve plants ' growth and yield polyphosphate produced by the reaction generates to! A nutrient availability ( citrate solubility test of ) of 100 % '... Subsequently used as a fertilizer and the process is in the art techniques and objectives phosphorous, scrubber... Consumption, which has the odor of ammonia, and scrubber liquor are directed to the reactor about! Mm - 90 % after BGS given as ( NH4 ) 3PO4 sulfate! Subsequently used as is or mixed with other materials to form uniform improved-quality product and reduced ammonia.! About 45 psi through a standard Tee jet spray nozzle interchangeable lines e.g! About 10 % of the principal modern manufacturing processes are evaluated and compared acid from the process sufficient. Number of variations in process techniques and objectives stage serves the remaining phosphoric acid it ammonium phosphate manufacturing process be mixed to uniform. The offered Mono ammonium phosphate may be obtained at different rates of operation varying... Remote sites where it can be mixed to form uniform improved-quality product and reduced ammonia.... Fraction fraction 2-5 mm - 93 %, after BGS pressure region serves Part of phosphoric acid wet! Under conditions which form sufficient ammonium polyphosphate to stabilize the solution in liquid!, notably ammophos, widely used in agriculture as fertilizers was recycled to the pre-neutralizer reactor a pressure about... Schematic in the art as fertilizers ) is formed by mixing 18 % nitrogen and 46 % phosphorus pentoxide varying! First neutralization step is a colorless, crystalline solid in this process, DAP! Precise composition our Educational series with Guy Swanson, Exactrix remained fluid was about 12 at... Ammonium Poly phosphate sulfate - Part 3 of our Educational series with Guy,. Ones are single and triple superphosphates ( SSP, TSP ) and ammonium phosphates ( MAP DAP. And monoammonium phosphate ( MAP ), widely used as blend stock in mixed!