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A kind of diammonium sulfophosphate binary compound fertilizer and the method for producing diammonium phosphate diammonium binary compound fertilizer by using ammonium phosphate by-products

A binary compound and by-product technology, applied in ammonium orthophosphate fertilizer, ammonium salt fertilizer, urea compound fertilizer, etc., can solve problems such as no market prospects, slow fertilizer efficiency, and environmental pollution

Active Publication Date: 2021-08-13
LOMON LAND AGRI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the nitrogen content and sulfur content of ammonium phosphate solid-phase by-products are both low, although the phosphorus content is high, but almost all of them are citrate-soluble phosphorus, which is difficult for crops to absorb, slow fertilizer efficiency, no market prospect, and low utilization. It is also easy to pollute the environment

Method used

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  • A kind of diammonium sulfophosphate binary compound fertilizer and the method for producing diammonium phosphate diammonium binary compound fertilizer by using ammonium phosphate by-products
  • A kind of diammonium sulfophosphate binary compound fertilizer and the method for producing diammonium phosphate diammonium binary compound fertilizer by using ammonium phosphate by-products
  • A kind of diammonium sulfophosphate binary compound fertilizer and the method for producing diammonium phosphate diammonium binary compound fertilizer by using ammonium phosphate by-products

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Embodiment 1

[0019] The present embodiment provides a kind of method that utilizes ammonium phosphate by-product to produce diammonium sulphate binary compound fertilizer, comprising:

[0020] Production formula preparation: the mass ratio of ammonium phosphate by-product, sulfuric acid, liquid ammonia, urea, ammonium phosphate and bentonite is 37.7:27:8:2:5:1.

[0021] Production process: (1) Mix ammonium phosphate by-products and sulfuric acid into the reaction tank according to the above mass ratio, form a slurry evenly by stirring and mixing, add water to make the slurry specific gravity 1.2:1, and react for 2 hours; (2) Slurry It is pumped into the buffer tank for storage, and then stably sent into the tubular reactor by the pump. According to the above mass ratio, the liquid ammonia is converted from the ammonia evaporator into ammonia gas and enters the tubular reactor to neutralize the pH of the slurry to 5- 6. Among them, the ammonia pressure is controlled to be 0.4MPa; (3) Put th...

Embodiment 2

[0023] The present embodiment provides a kind of method that utilizes ammonium phosphate by-product to produce diammonium sulphate binary compound fertilizer, comprising:

[0024] Production formula preparation: the mass ratio of ammonium phosphate by-product, sulfuric acid, liquid ammonia, urea, ammonium phosphate and bentonite is 81:29:8.5:5:7.5:2.

[0025] Production process: (1) Mix ammonium phosphate by-products and sulfuric acid into the reaction tank according to the above mass ratio, form a slurry evenly by stirring and mixing, add water to make the slurry specific gravity 2.0:1, and react for 1.2h; (2) slurry The material is pumped into the buffer tank for storage, and then stably sent into the tubular reactor by the pump. According to the above mass ratio, the liquid ammonia is converted from the ammonia evaporator into ammonia gas and enters the tubular reactor to neutralize the pH of the slurry to 5. -6, wherein the ammonia pressure is controlled to be 0.8MPa; (3) ...

Embodiment 3

[0027] The present embodiment provides a kind of method that utilizes ammonium phosphate by-product to produce diammonium sulphate binary compound fertilizer, comprising:

[0028] Production formula preparation: the mass ratio of ammonium phosphate by-product, sulfuric acid, liquid ammonia, urea, ammonium phosphate and bentonite is 55:27:8:5:5:1.5.

[0029]Production process: (1) Mix ammonium phosphate by-products and sulfuric acid into the reaction tank according to the above mass ratio, form a slurry by stirring and mixing evenly, add water to make the slurry specific gravity 1.5:1, and carry out the reaction for 1.5h; (2) Slurry The material is pumped into the buffer tank for storage, and then stably sent into the tubular reactor by the pump. According to the above mass ratio, the liquid ammonia is converted from the ammonia evaporator into ammonia gas and enters the tubular reactor to neutralize the pH of the slurry to 5. -6, wherein the ammonia pressure is controlled to b...

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Abstract

The invention belongs to the technical field of chemical fertilizer production, and provides a diammonium sulfophosphate binary compound fertilizer and a method for producing the diammonium phosphate diammonium binary compound fertilizer by using ammonium phosphate by-products. The raw materials of the compound fertilizer include ammonium phosphate by-products, sulfuric acid, liquid ammonia, urea, ammonium phosphate and bentonite; the compound fertilizer is beneficial for crops to absorb the compound fertilizer, and can be widely applied to field crops. The method for producing diammonium diammonium phosphate binary compound fertilizer by using ammonium phosphate by-products comprises: mixing ammonium phosphate by-products with sulfuric acid to form a slurry for reaction; adding liquid ammonia to the slurry to neutralize the slurry; adding Urea, ammonium phosphate and bentonite are then granulated into materials; the materials are sequentially dried, cooled and screened; this method can comprehensively utilize the by-products of ammonium phosphate, turn waste into treasure, and produce efficient sulfur Diammonium Phosphate Binary Compound Fertilizer.

Description

technical field [0001] The invention belongs to the technical field of fertilizer manufacture, and in particular relates to a diammonium sulfophosphate binary compound fertilizer and a method for producing the diammonium phosphate diammonium binary compound fertilizer by using ammonium phosphate by-products. Background technique [0002] In the ammonium phosphate production process, in order to obtain different grades of products, the ammonium phosphate neutralization slurry will be partially separated in production, and solid phase by-products will be produced after separation. The nitrogen content in the ammonium phosphate solid-phase by-product is 3-8%, the phosphorus content is 30-45%, and the sulfur content is 1-4%. Among them, the nitrogen content and sulfur content of the ammonium phosphate solid-phase by-products are both low, although the phosphorus content is high, but almost all of them are citrate-soluble phosphorus, which is difficult for crops to absorb, and th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G1/00C05G5/30
CPCC05B7/00C05G3/00C05G5/30C05C3/00C05C9/00C05D9/00
Inventor 张洪江刘光海王永红何丰
Owner LOMON LAND AGRI
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