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Manufacture method for triammonium phosphate compound fertilizer

A technology of triammonium phosphate and manufacturing method, which is applied to ammonium orthophosphate fertilizer, alkaline orthophosphate fertilizer, phosphate fertilizer, etc. It can solve the problems of fast decomposition and loss of fertilizer efficiency, loose structure, fast dissolution and release of fertilizer, etc., so as to save repeated construction The effect of investment

Inactive Publication Date: 2017-05-24
李志强
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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 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 the granulation process belongs to simple physical adhesion, the structure is relatively loose, the fertilizer dissolves and releases quickly, the fertilizer decomposes and loses quickly, and the fertilizer utilization rate is low.

Method used

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  • Manufacture method for triammonium phosphate compound fertilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: as figure 1 as shown,

[0024] Step 1: Send the mixture of monoammonium phosphate and diammonium phosphate and hot water into the dissolving tank 1, neutralize the phosphoric acid with ammonia to prepare the Anfu powder (a mixture of monoammonium phosphate and diammonium phosphate), and then pass the mixed slurry through a tubular Reactor 2 is sent to a high-pressure over-amination device, and the raw material gas ammonia (NH3) is over-ammonated, and then enters a high-pressure ammoniation device 3, the pressure of gas ammonia is 0.3Mpa, and the temperature is controlled at 60°C to prepare ammonium phosphate mixed slurry .

[0025] Step 2: After detecting that the ammonia saturation reaches process 1.4, 35 parts of ammonium phosphate mixed slurry is pressed into a buffer tank 4, and then 5 parts of ammonium chloride and 12 parts of urea are added as triammonium phosphate stabilizers.

[0026] Step 3: Then use the pump to send to the drum granulator 5, th...

Embodiment 2

[0028] Step 1: Send the mixture of monoammonium phosphate and diammonium phosphate and hot water into the dissolving tank 1, neutralize the phosphoric acid with ammonia to prepare the Anfu powder (a mixture of monoammonium phosphate and diammonium phosphate), and then pass the mixed slurry through a tubular Reactor 2 is sent to a high-pressure over-amination device, and the raw material gas ammonia (NH3) is over-ammonated, and then enters a high-pressure ammoniation device 3. The pressure of gas ammonia 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 process 1.5, 28 parts of ammonium phosphate mixed slurry are automatically pressed into a buffer tank 4, and then 4 parts of ammonium chloride and 15 parts of urea are added as triammonium phosphate stabilizers .

[0030] Step 3: Then use the pump to send to the drum granulator 5, then mix with raw materials such as...

Embodiment 3

[0032] Step 1: Send the mixture of monoammonium phosphate and diammonium phosphate and hot water into the dissolving tank 1, neutralize the phosphoric acid with ammonia to prepare the Anfu powder (a mixture of monoammonium phosphate and diammonium phosphate), and then pass the mixed slurry through a tubular Reactor 2 is sent to a high-pressure over-amination device, and then over-ammonates with raw material gas ammonia (NH3), and then enters high-pressure ammoniation device 3, the pressure of gas ammonia 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 process 1.3, 26 parts of ammonium phosphate mixed slurry are automatically pressed into a buffer tank 4, and then 3 parts of ammonium chloride and 10 parts of urea are added as triammonium phosphate stabilizers.

[0034] Step 3: Then use the pump to send to the drum granulator 5, then mix with raw materials such as ...

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Abstract

The present invention discloses a triammonium phosphate compound fertilizer and a manufacture method thereof. An ammoniation synthetic technology of over-ammoniation of raw materials of monoammonium phosphate and diammonium phosphate and with a degree of neutralization reaching 1.3-1.5 is used to prepare triammonium phosphate mixed material slurry in line with the requirements of the technology, then a triammonium phosphate stabilizer is added, the materials are sent into a roller granulator, the materials are mixed evenly with the raw materials of potassium chloride (potassium sulfate), urea, etc. sent by accessory material processes, the mixture is granulated, then the granulated mixture is subjected to a dryer, a sieving machine, a cooler, etc. and the treated mixture is subjected to a coating treatment to obtain the triammonium phosphate high-efficient compound fertilizer. The triammonium phosphate compound fertilizer consists of the following compositions in weight ratios: 31-45 parts of urea, 25-30 parts of potassium chloride, 28-35 parts of ammonium phosphate and 3-5 parts of ammonium chloride. The advantages are as follows: the urea, potassium chloride, triammonium phosphate, diammonium phosphate, monoammonium phosphate, potassium sulfate, etc. in the microscopic molecular level are used to form the balanced and stable nutrient units. The method can save the former working procedures of phosphoric acid neutralization, ammoniation, etc. and save construction investments.

Description

technical field [0001] The invention relates to a preparation technology of triammonium phosphate compound fertilizer. Background technique [0002] At present, the raw materials for various compound fertilizers (mixed fertilizers) used for crops mainly include potassium chloride, potassium sulfate, monoammonium phosphate, diammonium phosphate, superphosphate, ammonium chloride, ammonium bicarbonate, urea, etc. In order to produce fertilizers with a total nutrient content of more than 50%, it is necessary to adopt a method of increasing the ratio of ammonium phosphate to be used. 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 belongs to simple physical adhesion, the structure i...

Claims

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Application Information

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IPC IPC(8): C05G1/00
CPCC05B7/00
Inventor 李志强
Owner 李志强
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