Triammonium phosphate composite fertilizer and its making process

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

Active Publication Date: 2007-04-25
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

[0023] Example 1: As shown in Figure 1,

[0024] Step 1: The mixture of monoammonium phosphate and diammonium phosphate and hot water are sent into dissolving tank 1, and phosphoric acid is neutralized with ammonia to prepare Anfu powder (monoammonium phosphate and diammonium phosphate mixture) after the process, and the mixed slurry is passed through a tubular Reactor 2, sent to high pressure over-amination device, and raw material gas ammonia (NH 3 ) and then carry out excessive ammoniation, enter the high-pressure ammoniator 3, the gas ammonia pressure is 0.3Mpa, and the temperature is controlled at 60°C to obtain 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 stabilizer.

[0026] Step 3: then pumped to the drum granulator 5, and then mix...

Embodiment 2

[0028] Step 1: The mixture of monoammonium phosphate and diammonium phosphate and hot water are sent into dissolving tank 1, and phosphoric acid is neutralized with ammonia to prepare Anfu powder (monoammonium phosphate and diammonium phosphate mixture) after the process, and the mixed slurry is passed through a tubular Reactor 2, sent to high pressure over-amination device, and raw material gas ammonia (NH 3 ) and then carry out over-amination, enter the high-pressure ammoniator 3, the gas ammonia pressure is 0.4Mpa, and the temperature is controlled at 70°C. The ammonium phosphate mixed slurry was obtained.

[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 stabilizer.

[0030] Step 3: then pumped to the drum granulator 5, then mixed with 35 parts of potassium ...

Embodiment 3

[0032] Step 1: The mixture of monoammonium phosphate and diammonium phosphate and hot water are sent into dissolving tank 1, and phosphoric acid is neutralized with ammonia to prepare Anfu powder (monoammonium phosphate and diammonium phosphate mixture) after the process, and the mixed slurry is passed through a tubular Reactor 2, sent to high pressure over-amination device, and raw material gas ammonia (NH 3 ) and then carry out over-amination, enter the high-pressure ammoniator 3, the gas ammonia pressure is 0.6Mpa, and the temperature is controlled at 80°C. The ammonium phosphate mixed slurry was obtained.

[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 stabilizer.

[0034] Step 3: then pumped to the drum granulator 5, then mixed with 32 parts of potassium ...

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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 present invention relates to a triammonium phosphate compound fertilizer and a preparation technology thereof. Background technique: [0002] At present, various types of compound fertilizers (compound 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 is necessary to increase the proportion of ammonium phosphate to be used. 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 (compound fertilizer) produced by the traditional granulation method, because its granulation process is a simple physical adhesion, the structur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G1/00C05B7/00C05C3/00C05C9/00C05D1/02
Inventor 高建华
Owner STANLEY AGRI GRP CO LTD
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