CN107032845A - A kind of triammonium phosphate composite fertilizer and its manufacture method - Google Patents
A kind of triammonium phosphate composite fertilizer and its manufacture method Download PDFInfo
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- CN107032845A CN107032845A CN201510450514.1A CN201510450514A CN107032845A CN 107032845 A CN107032845 A CN 107032845A CN 201510450514 A CN201510450514 A CN 201510450514A CN 107032845 A CN107032845 A CN 107032845A
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Abstract
A kind of triammonium phosphate composite fertilizer and its manufacture method; using by raw material MAP, the excessive ammonification of Diammonium phosphate (DAP); degree of neutralization reaches 1.3-1.5 ammonification synthesis technique; prepare the triammonium phosphate mixed slurry for meeting technological requirement; then triammonium phosphate stabilizer is added; with being pumped into roller pelletizer, the potassium chloride sent with burden process（Potassium sulfate）, the raw material such as urea it is well mixed after granulate, then by dryer, triammonium phosphate efficient compound fertilizer is made in equipment and the coating processing such as screening machine, cooler.The composition of triammonium phosphate composite fertilizer of the present invention：（Weight proportion）Urea：30~40 parts；Potassium chloride：28~35 parts；Phosphorus ammonium：28~35 parts；Ammonium chloride：3-5 parts.It is an advantage of the invention that：In micro molecule level, by raw materials such as urea, potassium chloride, triammonium phosphate, Diammonium phosphate (DAP), MAP, potassium sulfates, nutrient unit stable in a balanced way is formed.It can save in phosphoric acid and the preceding working procedure such as ammonification, save construction investment.
Description
Technical field
The present invention is originally related to a kind of triammonium phosphate composite fertilizer and its technology of preparing.
Background technology
For all kinds of composite fertilizers (complex fertilizer) of crops, its raw materials for production mainly has potassium chloride, potassium sulfate, MAP, Diammonium phosphate (DAP), calcium superphosphate, ammonium chloride, ammonium hydrogen carbonate, urea.In order to produce fertilizer of the total nutrient content more than 50%, it is necessary to realized using phosphorus ammonium is improved using the method for proportioning.In order to be adapted to being actually needed for crop growth, simple dependence improves the content of single nutrients of nitrogen using urea, it is clear that can not meet scientific formula fertilising requirement.Simultaneously because composite fertilizer's (complex fertilizer) of traditional prilling process production, due to its granulation process belong to simple physics it is viscous and, structure is more open, and fertilizer dissolving release is very fast, and fertilizer efficiency, which is decomposed, to be lost in fast, and utilization rate of fertilizer is relatively low.
The content of the invention
Present invention aims at the shortcoming for improving existing composite heat transfer technology, and a kind of triammonium phosphate composite fertilizer and its manufacture method are provided, to achieve the above object, the present invention takes following design：
Preparation process is used raw material MAP, the excessive ammonification of Diammonium phosphate (DAP), degree of neutralization reaches 1.3---1.5 ammonification synthesis technique, prepare the triammonium phosphate mixed slurry for meeting technological requirement, then triammonium phosphate stabilizer is added, to ensure that triammonium phosphate keeps relative stability in follow-up composite fertilizer's manufacturing process, its decomposable process is reduced as far as possible.
Step 1：With after the process for preparing ammophos (MAP and Diammonium phosphate (DAP) mixture) from phosphoric acid ammonification, mixed slurry is sent into the excessive ammonification device of a set of high pressure.Mixed slurry, through tubular reactor, with raw material gas ammonia (NH3) carry out excessive ammonification.Gas ammonia pressure 0.3---0.6Mpa, 60---80 DEG C of temperature control.
Phosphorus ammonium mixed slurry is made.
Step 2：Phosphorus ammonium mixed slurry, when reaching gas-liquid solid phase equilibration, ammonia saturation degree (degree of neutralization) is reached after technique after testing, automatically in one dashpot of press-in, adds 3----5 parts of ammonium chlorides and 10---18 parts of urea as triammonium phosphate stabilizer.
Step 3：Then with being pumped into roller pelletizer; 28----35 part potassium chloride (potassium sulfate), the 20----25 parts of urea raw materials sent again with burden process are granulated after being well mixed; pass through dryer again; screening machine, cooling machine equipment, are then made triammonium phosphate efficient compound fertilizer by metering packing again.
The composition of triammonium phosphate composite fertilizer of the present invention：(weight proportion)
Urea：30~43 parts
Potassium chloride：28~35 parts
Phosphorus ammonium：28~35 parts
Ammonium chloride：3---5 parts
Preparation process ensures that triammonium phosphate is not decomposed, and by the interaction between various nutrients, forms nutrient unit stable in a balanced way.Such fertilizer monomer, the double salt solid solution for being merged and being constituted by a variety of salt.
Compound fertilizer prepared by the present invention is in micro molecule level, by urea, potassium chloride, triammonium phosphate, Diammonium phosphate (DAP), MAP, potassium sulfate raw material, it is fused into an organic nutrient overall, by the interaction between various nutrients, forms nutrient unit stable in a balanced way.Its main component be considered as：Urea, urea ammonium phosphate, ammonium chloride potassium, ammonium-potassium sulfate, ammonium-potassium phosphate, triammonium phosphate, tripotassium phosphate, ammonium syngenite double salt solid solution.
This triammonium phosphate composite fertilizer can be according to each growth period of crops to the absorbing state of Different Nutrients, and continuously Releasing nutrient, is made for thing absorption, so as to reduce decomposition loss of the fertilizer in farmland, improves chemical fertilizer utilization ratio.
The present invention prepares triammonium phosphate composite fertilizer, it is exactly using high pressure excessive ammoniation process the characteristics of a maximum in preparation process, by raw material MAP, the excessive ammonification of Diammonium phosphate (DAP), its process reaches balance each other after, the triammonium phosphate component of stable content is generated, so as to improve the nitrogen content in system.
The present invention prepares triammonium phosphate, in order to prevent it from decomposing at normal temperatures and pressures, and has especially made specially treated in preparation process, that is, adds appropriate ammonium chloride NH4CI and urea CO (NH2)2It is used as stabilizer.
The present invention prepares triammonium phosphate, in order to prevent it from largely being decomposed during separating-purifying, and this technique is not on the premise of product is changed using character, preferential use does not make separating-purifying, but next process is sent directly into, carry out mixing granulation, low temperature drying processing.
Triammonium phosphate composite fertilizer prepared by the present invention, the raw material used in preparation process is MAP, Diammonium phosphate (DAP), can be saved in phosphoric acid and ammonification preceding working procedure, so as to save a large amount of repeated construction investments.It can also be transformed on original ammonium phosphate production device, produce efficient nitrogen-phosphorus-potassium compound fertilizer.
The present invention is adapted to prepare high nitrogen content, high concentration, high-quality universal composite fertilizer.
Embodiment：
Embodiment 1：
Step 1：By in MAP and Diammonium phosphate (DAP) mixture and hot water feeding dissolving tank, phosphoric acid ammonification neutralization is prepared after ammophos (MAP and Diammonium phosphate (DAP) mixture) process, by mixed slurry through tubular reactor, the excessive ammonification device of high pressure is sent into, with raw material gas ammonia (NH3) excessive ammonification is carried out again, into high pressure ammoniated device, gas ammonia pressure 0.3Mpa, phosphorus ammonium mixed slurry is made in 60 DEG C of temperature control.
Step 2：Ammonia saturation degree is reached after technique after testing, 35 parts of phosphorus ammonium mixed slurries, press-in one dashpot in, add 5 parts ammonium chloride and 12 parts of urea as triammonium phosphate stabilizer.
Step 3：Then with being pumped into roller pelletizer; the 28 parts of raw materials of 28 parts of potassium chloride (or potassium sulfate), urea sent again with burden process are granulated after being well mixed; pass through dryer again, then screening machine, cooling machine equipment are made triammonium phosphate efficient compound fertilizer by metering packing again.
Embodiment 2：
Step 1：By in MAP and Diammonium phosphate (DAP) mixture and hot water feeding dissolving tank, phosphoric acid ammonification neutralization is prepared after ammophos (MAP and Diammonium phosphate (DAP) mixture) process, by mixed slurry through tubular reactor, the excessive ammonification device of high pressure is sent into, with raw material gas ammonia (NH3) excessive ammonification is carried out again, into high pressure ammoniated device, gas ammonia pressure 0.4Mpa, 70 DEG C of temperature control.Phosphorus ammonium mixed slurry is made.
Step 2：Ammonia saturation degree is reached after technique after testing, 28 parts of phosphorus ammonium mixed slurries, automatically press-in one dashpot in, add 4 parts ammonium chloride and 15 parts of urea as triammonium phosphate stabilizer.
Step 3：Then with being pumped into roller pelletizer; the 15 parts of raw materials of 35 parts of potassium chloride (or potassium sulfate), urea sent again with burden process are granulated after being well mixed; pass through dryer again, then screening machine, cooling machine equipment are made triammonium phosphate efficient compound fertilizer by metering packing again.
Embodiment 3：
Step 1：By in MAP and Diammonium phosphate (DAP) mixture and hot water feeding dissolving tank, phosphoric acid ammonification neutralization is prepared after ammophos (MAP and Diammonium phosphate (DAP) mixture) process, by mixed slurry through tubular reactor, the excessive ammonification device of high pressure is sent into, with raw material gas ammonia (NH3) excessive ammonification is carried out again, into high pressure ammoniated device, gas ammonia pressure 0.6Mpa, 80 DEG C of temperature control.Phosphorus ammonium mixed slurry is made.
Step 2：Ammonia saturation degree is reached after technique after testing, 26 parts of phosphorus ammonium mixed slurries, automatically press-in one dashpot in, add 3 parts ammonium chloride and 10 parts of urea as triammonium phosphate stabilizer.
Step 3：Then with being pumped into roller pelletizer; the 29 parts of raw materials of 32 parts of potassium chloride (or potassium sulfate), urea sent again with burden process are granulated after being well mixed; pass through dryer again; screening machine, cooler, coating machine equipment, are then made triammonium phosphate efficient compound fertilizer by metering packing again.
With reference to practical condition, according to reaction balance and reaction rate, it should be from optimum process condition：Ammoniator pressure 0.4--0.5MPA, 70---80 DEG C of reaction temperature.Degree of neutralization is 1.3-----1.5.
Claims (3)
1. a kind of triammonium phosphate composite fertilizer, it is characterised in that：Raw material composition is calculated as with weight proportion：
Urea：30~43 parts；
Potassium chloride：28~35 parts；
Phosphorus ammonium：28~35 parts；
Ammonium chloride：3---5 parts.
2. a kind of manufacture method of triammonium phosphate composite fertilizer according to claim 1, it is characterized in that：By raw material MAP, the excessive ammonification of Diammonium phosphate (DAP), degree of neutralization reaches 1.3---1.5, generates triammonium phosphate, and preparation process adds ammonium chloride NH4CI and urea CO (NH2)2It is used as stabilizer；Have the following steps；Step 1：From phosphoric acid ammonification and after preparing ammophos process, mixed slurry is sent into the excessive ammonification device of a set of high pressure, mixed slurry, through tubular reactor, excessive ammonification, gas ammonia pressure 0.3---0.6Mpa are carried out with raw material gas ammonia, 60---80 DEG C of temperature control, is made phosphorus ammonium mixed slurry；Step 2：28~35 parts of phosphorus ammonium mixed slurries, when reaching gas-liquid solid phase equilibration, ammonia saturation degree after testing
Reach after technique, automatically in one dashpot of press-in, add 3----5 parts of ammonium chlorides and 10---18 parts of urea as triammonium phosphate stabilizer；Step 3：Then with being pumped into roller pelletizer; 28----35 part potassium chloride or potassium sulfate, 20----25 part urea raw material sent again with burden process are granulated after being well mixed; pass through dryer again, then screening machine, cooling machine equipment are made triammonium phosphate composite fertilizer by metering packing again.
3. the manufacture method of a kind of triammonium phosphate composite fertilizer according to claim 2, it is characterised in that between converter pressure 0.4---0.5MPa, temperature is between 75--80 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510450514.1A CN107032845A (en) | 2015-07-29 | 2015-07-29 | A kind of triammonium phosphate composite fertilizer and its manufacture method |
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| CN201510450514.1A CN107032845A (en) | 2015-07-29 | 2015-07-29 | A kind of triammonium phosphate composite fertilizer and its manufacture method |
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| CN107032845A true CN107032845A (en) | 2017-08-11 |
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Application publication date: 20170811 |