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Triammonium phosphate compound fertilizer and preparation method thereof

A technology of triammonium phosphate and its manufacturing method, which is applied in the direction of fertilization device, fertilizer mixture, application, etc., can solve the problems of fast decomposition and loss of fertilizer efficiency, loose structure, low fertilizer utilization rate, etc., and achieve the effect of saving repeated construction investment

Inactive Publication Date: 2017-08-11
刘从双
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to meet the actual needs of crop growth, simply relying on urea to increase the content of single nutrient nitrogen obviously cannot meet the requirements of scientific formula fertilization
At the same time, due to the compound fertilizer (mixed fertilizer) produced by the traditional granulation method, because the granulation process is a simple physical adhesion, the structure is relatively loose, the fertilizer dissolves and releases faster, the fertilizer decomposes and loses quickly, and the fertilizer utilization rate is low.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Step 1: Send the mixture of monoammonium phosphate and diammonium phosphate and hot water into the dissolving tank, neutralize the phosphoric acid with ammonia to prepare Anfu powder (a mixture of monoammonium phosphate and diammonium phosphate), and then pass the mixed slurry through a tubular reaction device, sent to the high-pressure over-amination device, and the raw material gas ammonia (NH 3 ) is subjected to excessive ammonification, enters the high-pressure ammoniator, the gas ammonia pressure is 0.3Mpa, and the temperature is controlled at 60°C to prepare the ammonium phosphate mixed slurry.

[0025] Step 2: After detecting that the ammonia saturation reaches the technology, 35 parts of ammonium phosphate mixed slurry are pressed into a buffer tank, and then 5 parts of ammonium chloride and 12 parts of urea are added as the triammonium phosphate stabilizer.

[0026] Step 3: Then use the pump to send to the drum granulator, and then mix with 28 parts of potassiu...

Embodiment 2

[0028] Step 1: Send the mixture of monoammonium phosphate and diammonium phosphate and hot water into the dissolving tank, neutralize the phosphoric acid with ammonia to prepare Anfu powder (a mixture of monoammonium phosphate and diammonium phosphate), and then pass the mixed slurry through a tubular reaction device, sent to the high-pressure over-amination device, and the raw material gas ammonia (NH 3 ) to carry out excessive ammoniation again, and enter the high-pressure ammoniator, the gas ammonia pressure is 0.4Mpa, and the temperature is controlled at 70°C. Prepare ammonium phosphate mixed slurry.

[0029] Step 2: After detecting that the ammonia saturation reaches the technology, 28 parts of ammonium phosphate mixed slurry are automatically pressed into a buffer tank, and then 4 parts of ammonium chloride and 15 parts of urea are added as the triammonium phosphate stabilizer.

[0030] Step 3: Then use the pump to send to the drum granulator, and then mix with 35 parts...

Embodiment 3

[0032] Step 1: Send the mixture of monoammonium phosphate and diammonium phosphate and hot water into the dissolving tank, neutralize the phosphoric acid with ammonia to prepare Anfu powder (a mixture of monoammonium phosphate and diammonium phosphate), and then pass the mixed slurry through a tubular reaction device, sent to the high-pressure over-amination device, and the raw material gas ammonia (NH 3 ) is subjected to excessive ammoniation, and enters the high-pressure ammoniator, the gas ammonia pressure is 0.6Mpa, and the temperature is controlled at 80°C. Prepare ammonium phosphate mixed slurry.

[0033] Step 2: After detecting that the ammonia saturation reaches the technology, 26 parts of ammonium phosphate mixed slurry are automatically pressed into a buffer tank, and then 3 parts of ammonium chloride and 10 parts of urea are added as the triammonium phosphate stabilizer.

[0034] Step 3: Then use the pump to send to the drum granulator, and then mix with 32 parts o...

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Abstract

A triammonium phosphate compound fertilizer and its manufacturing method, which adopts an ammonification synthesis process in which the raw materials monoammonium phosphate and diammonium phosphate are excessively ammonified, and the neutralization degree reaches 1.3-1.5, and phosphoric acid meeting the process requirements is prepared. Triammonium mixed slurry, then added triammonium phosphate stabilizer, pumped to the drum granulator, mixed with potassium chloride (potassium sulfate), urea and other raw materials from the batching process, and then granulated, and then dried Drying machine, screening machine, cooling machine and other equipment and coating treatment to produce high-efficiency triammonium phosphate compound fertilizer. The composition of the triammonium phosphate compound fertilizer of the present invention: (weight ratio) urea: 30-40 parts; potassium chloride: 28-35 parts; ammonium phosphate: 28-35 parts; ammonium chloride: 3-5 parts. The invention has the advantages that: at the microscopic molecular level, raw materials such as urea, potassium chloride, triammonium phosphate, diammonium phosphate, monoammonium phosphate and potassium sulfate are used to form a balanced and stable nutrient unit. It can save the front process such as phosphoric acid neutralization and ammoniation, and save construction investment.

Description

technical field [0001] The invention relates to a triammonium phosphate compound fertilizer and its preparation technology. Background technique [0002] All kinds of compound fertilizers (mixed fertilizers) used for crops mainly include potassium chloride, potassium sulfate, monoammonium phosphate, diammonium phosphate, superphosphate, ammonium chloride, ammonium bicarbonate, and urea. In order to produce fertilizers with a total nutrient content of more than 50%, it must be achieved by increasing the ratio of ammonium phosphate. In order to meet the actual needs of crop growth, simply relying on the use of urea to increase the content of single nutrient nitrogen obviously cannot meet the requirements of scientific formula fertilization. At the same time, due to the compound fertilizer (mixed fertilizer) produced by the traditional granulation method, because its granulation process belongs to simple physical adhesion, the structure is relatively loose, the fertilizer diss...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00
Inventor 刘从双
Owner 刘从双
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