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Method for producing high-concentration compound fertilizer by utilizing ammonium phosphate plant

A production method and technology of compound fertilizer, applied to ammonium orthophosphate fertilizer, phosphate fertilizer, ammonium salt fertilizer, etc., can solve the problems of high energy consumption, complex process, large investment, etc., achieve good economic benefits, easy to implement, and simple process method Feasible effect

Inactive Publication Date: 2017-03-22
威海恒邦化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method for producing high-concentration compound fertilizer using an ammonium phosphate device in order to solve the technical problems of complex process, large investment and high energy consumption in the existing method

Method used

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  • Method for producing high-concentration compound fertilizer by utilizing ammonium phosphate plant

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Experimental program
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Effect test

Embodiment 1

[0012] Utilize ammonium phosphate device 1, produce ammonium phosphate slurry, obtain neutralization degree 1.40~1.50, specific gravity 1.45~1.50, the ammonium phosphate slurry of water content weight percentage (the same below) 25~30%, slurry dry base material contains N: 14.5% with P 2 o 5 : 45.5%; using the additional raw material device, potassium fertilizer, nitrogen fertilizer, phosphate fertilizer and other fertilizers or elements are respectively passed through the raw material warehouse 2 (2~1 to 2~4, etc.), and through the weighing scale 3 (3~1 to 3~4 etc.) ) after metering, transported to the stirring tank 5 through the conveyor 4, and the consumption ratio of potassium sulfate and ammonium sulfate is a weight ratio of 2:1. The raw material is mixed with the added tail suction water in the stirring tank 5 to a raw material slurry with a concentration weight percentage (the same below) of 65 to 75%, and then transported by the raw material slurry pump 6 and then add...

Embodiment 2

[0014] Use ammonium phosphate device 1 to produce ammonium phosphate slurry to obtain ammonium phosphate slurry with a neutralization degree of 1.40-1.50, a specific gravity of 1.45-1.50, and a water content of 25-30%. The dry base material of the slurry contains N: 14.5%, and P 2 o 5 : 43.5%; using the additional raw material device, potassium fertilizer, nitrogen fertilizer, phosphate fertilizer and other fertilizers or elements are respectively passed through the raw material warehouse 2 (2~1 to 2~4, etc.), and through the weighing scale 3 (3~1 to 3~4 etc.) ) after metering, transported to the stirring tank 5 through the conveyor 4, and the consumption ratio of potassium sulfate and ammonium sulfate is a weight ratio of 1.9:1.2. The raw material is mixed with the added tail suction water in the stirring tank 5 to form a raw material slurry with a concentration of 65-75%, and then the raw material slurry pump 6 is transported and metered, and then added to the ammonium phosp...

Embodiment 3

[0016] Use ammonium phosphate device 1 to produce ammonium phosphate slurry to obtain ammonium phosphate slurry with a neutralization degree of 1.40-1.50, a specific gravity of 1.45-1.50, and a water content of 25-30%. The dry base material of the slurry contains N: 14.5%, and P 2 o 5 : 45.3%; using the additional raw material device, potassium fertilizer, nitrogen fertilizer, phosphate fertilizer and other fertilizers or elements are respectively passed through the raw material warehouse 2 (2~1 to 2~4, etc.), and through the weighing scale 3 (3~1 to 3~4 etc.) ) After metering, it is transported to the stirring tank 5 through the conveyor 4, and the raw materials are all potassium sulfate. The raw material is mixed with the added tail suction water in the stirring tank 5 to form a raw material slurry with a concentration of 70-75%, and then transported by the raw material slurry pump 6 after metering, and then added to the ammonium phosphate slurry and the raw material slurry ...

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Abstract

The invention relates to a method for producing a high-concentration compound fertilizer by utilizing an ammonium phosphate plant, aiming at solving the technical problems. The method comprises the following steps: producing concentrated ammonium phosphate slurry according to a slurry-process ammonium phosphate production method, so as to obtain the ammonium phosphate slurry containing water with the weight percent of 25%-30%; mixing and conveying potassium sulfate, urea or ammonium sulfate and adjusting powder into a stirring groove, and adding into tail gas absorption water of the ammonium phosphate plant; adjusting the materials to obtain raw material slurry containing the water with the concentration weight percent of 25%-30%; mixing and uniformly stirring the obtained ammonium phosphate slurry and the raw material slurry, and conveying mixed slurry into a slurry spraying groove of the ammonium phosphate plant; conveying the slurry to the ammonium phosphate plant through a slurry spraying pump, and spraying the slurry, granulating and drying; and finally, obtaining a high-concentration compound fertilizer product. The method provided by the invention can be used for the production field of the high-concentration compound fertilizer.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a method for producing high-concentration compound fertilizer by using an ammonium phosphate device. Background technique [0002] Ammonium phosphate production equipment is divided into traditional method and slurry method. The main products of traditional method ammonium phosphate are 62% and 64% diammonium phosphate of nitrogen and phosphorus, and the main products of slurry method ammonium phosphate are granular or powdered 60% and 58%. , 55% monoammonium phosphate, or 57% diammonium phosphate and other nitrogen and phosphorus fertilizers. The above nitrogen and phosphorus fertilizers are now used as raw materials for blended fertilizers and compound fertilizers, and the nitrogen and phosphorus fertilizers are already in excess, and the product benefits are declining day by day. [0003] The Chinese invention patent with the publication number CN102633553B discloses a produc...

Claims

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Application Information

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IPC IPC(8): C05G1/06
CPCC05B7/00C05G5/12C05C3/00C05D1/02
Inventor 曹辉王磊陈思涛赵伟孙海明
Owner 威海恒邦化工有限公司
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