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Tower nitro compound fertilizer

A technology of nitro compound fertilizer and production method, which is applied in the production field of tower granulation to produce granular nitro compound fertilizer, can solve the problems of reduced hygroscopicity, single fertilizer type, etc., and achieves low hygroscopicity, quick effect, and improved physical and chemical properties. performance effect

Inactive Publication Date: 2005-11-09
SICHUAN NEW ENERGY POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] In order to solve the above-mentioned technical deficiencies, the present invention provides a production method for producing granule nitro compound fertilizer by tower type granulation containing phosphorus or potassium with a total nutrient>35%, and the granule nitro compound fertilizer produced by this technology contains The required nitrate nitrogen, ammonia nitrogen, phosphorus, and potassium elements are used to solve the single problem of agricultural ammonium nitrate fertilizer, and the market effect and social effect are better; it is more in line with the development direction of my country's chemical fertilizer industry; at the same time, the particle strength is increased, Enhance the anti-caking property of the product, reduce the hygroscopicity, and solve the risk of explosion, making the product easy to apply and transport

Method used

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  • Tower nitro compound fertilizer

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Embodiment 1

[0021] Embodiment 1: implement according to the following steps:

[0022] 1. Evaporation of liquid raw materials: Add the ammonium nitrate aqueous solution into the evaporator, evaporate and concentrate in a vacuum at a temperature of 150°C to 175°C to a concentration of 98.0% to 99.7%, separate the evaporated product from the steam in the separator, and obtain the molten Ammonium nitrate is sent into the mixer through the melting pump;

[0023] 2. Preheating of solid raw materials: Preheat the powdery dry monoammonium phosphate to 85°C-110°C through a heater, and send it to the mixer;

[0024] 3. Mixing of raw materials: In the mixer, add 10% of monoammonium phosphate and 1% of additives, and the amount of ammonium nitrate melt added is 89% (percentage by weight); the mixed melt is kept uniform and good through additives and agitators mixed and molten state;

[0025] 4. Granulation: The mixed molten liquid is quickly sent to the granulation tower at 158 ​​℃ ~ 171 ℃, sprayed...

Embodiment 2

[0027] Embodiment 2: implement according to the following steps:

[0028] 1. Evaporation of liquid raw materials: Add the ammonium nitrate aqueous solution into the evaporator, evaporate and concentrate in a vacuum at a temperature of 150°C to 175°C to a concentration of 98.0% to 99.7%, separate the evaporated product from the steam in the separator, and obtain the molten Ammonium nitrate is sent into the mixer through the melting pump;

[0029] 2. Preheating of solid raw materials: Preheat the powdery dry potassium sulfate to 85°C-110°C through a heater, and send it to the mixer;

[0030] 3. Mixing of raw materials: add 8% potassium sulfate and 1% additive in the mixer, and the ammonium nitrate melt add-on is 91% (percentage by weight); the mixed melt is kept uniform and good by the additive and the stirrer mixed and molten state;

[0031] 4. Granulation: The mixed molten liquid is quickly sent to the granulation tower at 158 ​​℃ ~ 171 ℃, sprayed down by the granulation noz...

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Abstract

The production of granulated nitro composite fertilizer uses the material including liquid ammonium nitrate, composite phosphate-potash fertilizer and additives. The production process includes the following steps: evaporating liquid material, preheating solid material, compounding the materials, granulating and packing the product. During the production, molten ammonium nitrate is utilized directly, composite fertilizer material and additives are added and available ammonium nitrate producing apparatus is used in the granulation.

Description

technical field [0001] The invention relates to a production method of compound fertilizer, in particular to a production method of tower type granulation to produce granular nitro compound fertilizer. Background technique [0002] At present, the ammonium nitrate produced by the agricultural ammonium nitrate production method is a single nitrogen fertilizer with a total nitrogen content of 34.6%. The fertilizer is single, the particles are small, the strength is poor, and it is easy to agglomerate, and it is explosive, and it is easy to be used in the production of illegal explosives , is a product that is prohibited from being produced, sold, and transported by the state, and all original production enterprises must change production. [0003] At present, domestically, there is a technique of producing nitro compound fertilizer by using the ammonium nitrate spray granulation method, such as Chinese patent CN9711587, the process is: firstly measure the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00C05G5/00
Inventor 谢木喜何兴川王宁志刘显谋付稚俊李俭付建平田金枝夏彬张明卫李刚李苓男
Owner SICHUAN NEW ENERGY POWER CO LTD
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