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High-concentration compound fertilizer and its production method

A production method and technology of compound fertilizer, applied in fertilization device, fertilizer mixture, application and other directions, can solve the problems of high pollution, high energy consumption, large investment, etc., and achieve the effects of less investment, reduced material moisture, and high strength

Active Publication Date: 2016-06-15
嘉施利(应城)化肥有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a high-concentration compound fertilizer and its production method in view of the defects of high energy consumption, high pollution, and large investment in the production of compound fertilizers in the prior art. The reaction heat released by the ammonia reaction flashes the moisture, and increases the granulation temperature, reduces the moisture of the material, reduces the drying load, greatly reduces the coal consumption and electricity consumption, and the energy saving effect is remarkable

Method used

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  • High-concentration compound fertilizer and its production method
  • High-concentration compound fertilizer and its production method
  • High-concentration compound fertilizer and its production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A high-concentration compound fertilizer, based on the total mass of all raw materials, the raw materials contain components with the following mass percentages:

[0049]

[0050] (1) Crushing and mixing of materials: Accurately weigh 180 kg of ammonium phosphate, 360 kg of ammonium chloride, 110 kg of nitrophos, and 199 kg of potassium chloride and put them into the crusher and mix them evenly, then mix them The uniform raw material is fed into the drum granulator.

[0051] (2) Amino acid reaction: 40 kg of liquid ammonia and 110 bus concentration of 50% dilute nitric acid are passed into the tubular reactor for acid reaction to generate ammonium nitrate.

[0052] (3) Drum granulation: Spray the ammonium nitrate produced by the above reaction in the drum granulator, use the chemical reaction heat of liquid ammonia and dilute nitric acid to granulate, and add an appropriate amount of steam to make the granulator in the granulator The granulation temperature is at 40...

Embodiment 2

[0056] A high-concentration compound fertilizer, based on the total mass of all raw materials, the raw materials contain components with the following mass percentages:

[0057]

[0058] (1) Crushing and mixing of materials: Accurately weigh 150 kg of ammonium phosphate, 400 kg of ammonium chloride, 107 kg of nitrophos, and 180 kg of potassium chloride and put them into the crusher and mix them evenly, then mix them The uniform raw material is fed into the drum granulator.

[0059] (2) Amino acid reaction: 20 kg of liquid ammonia and 140 m of dilute nitric acid with a concentration of 60% are passed into the tubular reactor for acid reaction to generate ammonium nitrate.

[0060] (3) Drum granulation: Spray the ammonium nitrate produced by the above reaction in the drum granulator, use the chemical reaction heat of liquid ammonia and dilute nitric acid to granulate, and add an appropriate amount of steam to make the granulator in the granulator The granulation temperature ...

Embodiment 3

[0064] A high-concentration compound fertilizer, based on the total mass of all raw materials, the raw materials contain components with the following mass percentages:

[0065]

[0066] (1) Crushing and mixing of materials: Accurately weigh 175 kg of ammonium phosphate, 383 kg of ammonium chloride, 90 kg of nitrophos, and 200 kg of potassium chloride and put them into the crusher and mix them evenly, then mix them The uniform raw material is fed into the drum granulator.

[0067] (2) Amino acid reaction: 30 kg of liquid ammonia and 120 m of dilute nitric acid with a concentration of 55% are passed into the tubular reactor for acid reaction to generate ammonium nitrate.

[0068] (3) Drum granulation: Spray the ammonium nitrate produced by the above reaction in the drum granulator, use the chemical reaction heat of liquid ammonia and dilute nitric acid to granulate, and add an appropriate amount of steam to make the granulator in the granulator The granulation temperature i...

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Abstract

The invention provides a high-concentration compound fertilizer and a production method thereof. The production method comprises the following steps of: smashing materials, and uniformly mixing; weighting ammonium dihydrogenphosphate, ammonium chloride, nitrophosphate, potassium chloride in a formula proportion, smashing, uniformly mixing, feeding the mixture into a rotor drum granulator; feeding liquid ammonia and dilute nitric acid into a tubular reactor for carrying out amino acid reaction; pelleting in a rotary drum, namely, after the liquid ammonia and the dilute nitric acid react in the tubular reactor, spraying into the rotor drum granulator, and pelleting by the chemical reaction of the liquid ammonia and the dilute nitric acid; drying, cooling and screening pelleted particles, wherein the particles with qualified particle size enter a coating machine, the large particles return to be smashed, and the small particles return to the granulator; coating by an anti-blocking agent; and spraying the anti-blocking agent into the coating machine for coating, thus obtaining the high-concentration compound fertilizer. According to the production method, the pelleting temperature is increased by using the chemical reaction heat between the nitric acid and ammonia, the characteristic of the material is improved, the production capacity of devices is improved, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a high-concentration compound fertilizer and a production method thereof. Background technique [0002] Fertilizer is the food of plants, an extremely important agricultural production material, and an important guarantee for the development of agricultural production and national food security. With the continuous development of my country's chemical fertilizer industry and agricultural production, compound fertilizer, as a fertilizer with relatively complete nutrients, has developed rapidly in recent decades. [0003] At present, the production of domestic compound fertilizers has problems such as high energy consumption, high pollution, and large investment. Compound fertilizer enterprises are facing fierce market competition, and it is very important for products to have competitive advantages. Due to the influence of fillers, the compound fertilizers containing fillers ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00
Inventor 宋睿柏万文蒋天举
Owner 嘉施利(应城)化肥有限公司
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