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Efficient high-concentration sulfur-based compound fertilizer containing poly-gamma-glutamic acid

A glutamic acid, high-concentration technology, applied in fertilization devices, fertilizer mixtures, applications, etc., can solve the problems that the ratio of N:P:K cannot reach 17:17:17, and the fertilizer efficiency is not high enough, so as to increase the effect of water retention, The effect of superior performance and convenient use

Active Publication Date: 2011-02-16
HUBEI NEWYANGFENG FERTILIZER STOCK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the known sulfur-based compound fertilizers are produced from potassium chloride, ammonia gas, urea, sulfuric acid, and phosphoric acid, and the general N:P:K ratio is 14:16:15 or 15:15:15, N:P: The K ratio cannot reach 17:17:17, so the fertilizer efficiency is not high enough

Method used

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Examples

Experimental program
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Embodiment Construction

[0021] A. Preparation of mixed acid: use 0.08 tons of K 2 0.06 ton of 98% sulfuric acid is mixed with 0.06 ton of 98% sulfuric acid to make potassium bisulfate (transformation efficiency ≥ 85%), and then 0.264-0.277 ton of 20% phosphoric acid after phosphoric acid quality control (quality can reach production 60%) The above diammonium phosphate) mixed to obtain mixed acid;

[0022] B, neutralization reaction: after the above-mentioned mixed acid and 0.056 tons of gas ammonia are subjected to the secondary neutralization reaction in the tubular reactor, flow into the ground tank to form a slurry;

[0023] C, granulation molding: send the above-mentioned slurry into a dryer for drying and granulation molding;

[0024] D, producing monoammonium phosphate: after neutralizing 0.663 tons of 20% phosphoric acid and 0.036 tons of gaseous ammonia in a tubular reactor, the monoammonium phosphate slurry is generated and sent to granulation;

[0025] E. Potassium supplementation: 0.2037...

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PUM

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Abstract

The invention relates to an efficient high-concentration sulfur-based compound fertilizer containing poly-gamma-glutamic acid, which is prepared from urea, phosphoric acid, potassium chloride, potassium sulfate, sulfuric acid, gas ammonia and poly-gamma-glutamic acid, and also comprises a water-retaining agent. A production process of the efficient high-concentration sulfur-based compound fertilizer comprises the steps of: A, preparing a mixed acid; B, neutralizing; C, pelleting and forming; D, preparing monoammonium phosphate; E, supplementing potassium; and F, supplementing nitrogen. The invention has the advantage of being capable of manufacturing the efficient high-concentration sulfur-based compound fertilizer containing the poly-gamma-glutamic acid, with the proportion of N:P:K of 17:17:17. Meanwhile, a poly-gamma-glutamic acid fertilizer synergist is added in the production process and used as a fertilizer absorbing promoting agent used on single nitrogen or phosphorus or potassium or the combination of the nitrogen and the phosphorus as well as the potassium. In addition, the water-remaining agent is added for increasing the water-retaining effect.

Description

technical field [0001] The invention relates to the field of farmland fertilizer processing. Background technique [0002] At present, the known sulfur-based compound fertilizers are produced from potassium chloride, ammonia gas, urea, sulfuric acid, and phosphoric acid, and the general N:P:K ratio is 14:16:15 or 15:15:15, N:P: The K ratio cannot reach 17:17:17, so the fertilizer efficiency is not high enough. Contents of the invention [0003] Purpose of the present invention is exactly for the above-mentioned deficiency of known sulfur-based compound fertilizer and production technology, and provides a kind of high-efficiency high-concentration sulfur-based compound fertilizer containing poly-γ-glutamic acid, and it is made of urea, phosphoric acid, potassium chloride, Potassium sulfate, sulfuric acid, ammonia gas, poly-γ-glutamic acid; the weight ratio of each component is: [0004] Urea with 46% N content 18.63 20% phosphoric acid 92.72-97.36 [0005] Contains K 2 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
Inventor 汤三洲汪少华
Owner HUBEI NEWYANGFENG FERTILIZER STOCK
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