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Method for lowering moisture of high-tower nitro product

A nitro, moisture technology, applied in ammonium nitrate fertilizer, application, nitrogen fertilizer and other directions, can solve the problems of pulverization, increased production cost, long hair, etc., and achieves the effect of removing drying steps, simplifying production process, and reducing production cost.

Inactive Publication Date: 2018-04-10
成都云图控股股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Excessive moisture in compound fertilizer products will lead to problems such as agglomeration, pulverization, and hair growth. Therefore, the moisture content of the product must be strictly controlled during the production process, especially for high-tower nitro products. In order to ensure product quality, product must be controlled. Moisture ≤ 1.0%, especially the moisture content of nitrosulfur-based products is required to be controlled at ≤ 0.6%. Usually, the production of high-tower nitro-based products adopts the method of adding monoammonium phosphate or ammonium sulfate that has been dried by the drying system to reduce the moisture content of the product , but this not only increases the production process steps but also leads to an increase in the production cost of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) high tower nitro 15-15-15 formula, total material amount 1000g;

[0016] (2) Take ammonium nitrate (accounting for 40.4% of the total material amount) in a beaker according to the formula ratio and the total amount of material, and melt at 160-175° C.;

[0017] (3) Take undried monoammonium phosphate (moisture 2.1%, accounting for 31% of total material amount) and undried ammonium sulfate (moisture 0.6%, accounting for total material amount 2.2%) according to the formula ratio and total material amount , adding 0.25% by weight of phosphorus pentoxide and mixing;

[0018] (4) Take the second major ingredient and mix it with (3) according to the formula ratio and the total amount of material;

[0019] (5) adding the material obtained in (4) into the molten material (2) at a constant speed under stirring;

[0020] (6) Keep the temperature of the slurry at 145-155°C and stir for 2-4 minutes after adding the material, keep the distance from the ground <10cm, pour the s...

Embodiment 2

[0023] (1) The fixed formula is the high tower nitro 17-10-18 formula, and the total material amount is 1000g;

[0024] (2) Take ammonium nitrate (accounting for 45.2% of the total material amount) in a beaker according to the formula ratio and the total amount of material, and melt at 160-175° C.;

[0025] (3) Take undried monoammonium phosphate (moisture 2.1%, accounting for 23% of the total material amount) according to the formula ratio and the total material amount, add 0.25% by weight of phosphorus pentoxide and mix;

[0026] (4) Take the second major ingredient and mix it with (3) according to the formula ratio and the total amount of material;

[0027] (5) adding the material obtained in (4) into the molten material (2) at a constant speed under stirring;

[0028] (6) Keep the temperature of the slurry at 145-155°C and stir for 2-4 minutes after adding the material, keep the distance from the ground <10cm, pour the slurry onto the dry floor to cool, bag and seal;

[...

Embodiment 3

[0031] (1) The fixed formula is the high tower nitro 22-8-10 formula, and the total amount of material is 1000g;

[0032] (2) Take ammonium nitrate (accounting for 58.25% of the total material amount) in a beaker according to the formula ratio and the total amount of material, and melt at 160-175° C.;

[0033] (3) Take undried monoammonium phosphate (moisture 2.1%, accounting for 15.8% of total material amount) and undried ammonium sulfate (moisture 0.6%, accounting for total material amount 8.0%) according to the formula ratio and total material amount , adding 0.25% by weight of phosphorus pentoxide and mixing;

[0034] (4) Take the second major ingredient and mix it with (3) according to the formula ratio and the total amount of material;

[0035] (5) adding the material obtained in (4) into the molten material (2) at a constant speed under stirring;

[0036] (6) Keep the temperature of the slurry at 145-155°C and stir for 2-4 minutes after adding the material, keep the d...

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PUM

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Abstract

The invention provides a method for lowering the moisture of a high-tower nitro product, and relates to the field of chemical fertilizer. By means of the method for lowering the moisture of the high-tower nitro product, a drying agent is added into a raw material monoammonium phosphate or ammonium sulfate which has much moisture, and then through the drying agent, the moisture in the raw materialis absorbed to lower the moisture of the obtained product, wherein the drying agent is one or more of phosphorous pentoxide, anhydrous calcium chloride, calcium oxide and calcium sulfate. The moisturecontent of the product obtained through the processing method is similar to that of the product prepared by using a fluidized bed to dry monoammonium phosphate or ammonium sulfate. Therefore, the method for lowering the moisture of the high-tower nitro product has the advantages that the drying steps can be omitted, the producing procedures are simplified, and the production cost can also be lowered.

Description

technical field [0001] The invention belongs to the field of chemical fertilizers, and in particular relates to a method for reducing the water content of high-tower nitro products. Background technique [0002] Excessive moisture in compound fertilizer products will lead to problems such as agglomeration, pulverization, and hair growth. Therefore, the moisture content of the product must be strictly controlled during the production process, especially for high-tower nitro products. In order to ensure product quality, product must be controlled. Moisture ≤ 1.0%, especially the moisture content of nitrosulfur-based products is required to be controlled at ≤ 0.6%. Usually, the production of high-tower nitro-based products adopts the method of adding monoammonium phosphate or ammonium sulfate that has been dried by the drying system to reduce the moisture content of the product However, this not only increases the production process steps but also leads to an increase in the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
CPCC05B7/00C05G3/00C05C1/00C05C3/00
Inventor 阎应广蒋天举黄亦张军
Owner 成都云图控股股份有限公司
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