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Triammonium phosphate composite fertilizer and its making process

A technology for manufacturing triammonium phosphate, which is applied to ammonium orthophosphate fertilizers, urea compound fertilizers, and alkaline orthophosphate fertilizers. It can solve the problems of fast decomposition and loss of fertilizer efficiency, loose structure, and failure to meet the requirements of scientific formula fertilization. To achieve the effect of saving repeated construction investment

Active Publication Date: 2005-01-26
STANLEY AGRI GRP CO LTD
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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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  • Triammonium phosphate composite fertilizer and its making process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: as figure 1 as shown,

[0022] 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 .

[0023] 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.

[0024] Step 3: Then use the pump to send to the drum granulator 5, th...

Embodiment 2

[0026] 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 the 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.

[0027] 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 .

[0028] Step 3: Then use the pump to send to the drum granulator 5, then mix with raw materials such ...

Embodiment 3

[0030] 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 the 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.

[0031] 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.

[0032] Step 3: Then use the pump to send to the drum granulator 5, then mix with raw materials such a...

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Abstract

The invention provides a triammonium phosphate composite fertilizer and its making process, wherein the composite fertilizer comprises (by weight portion) urea 30-40 parts, potassium chloride 28-35 parts, phosphoric ammonium 28-35 parts, ammonium chloride 3-5 parts.

Description

Technical field: [0001] The invention relates to a triammonium phosphate compound fertilizer and its preparation technology. 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 stru...

Claims

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Application Information

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IPC IPC(8): C05B7/00C05C3/00C05C9/00C05D1/02C05G1/00
Inventor 高建华
Owner STANLEY AGRI GRP CO LTD
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