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Glutamic acid synergist urea and preparation method thereof

A technology of glutamic acid and urea, applied in the direction of fertilizer mixture, fertilization device, application, etc., to reduce nutrient loss, avoid secondary pollution, and simplify agricultural operations

Inactive Publication Date: 2012-07-18
INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to technical and economic reasons such as technology, production costs, and benefits, there are many problems in realizing industrialized production and large-scale popularization and application.
[0008] At present, there is no literature report about modifying urea with glutamic acid, prolonging the release time of urea, improving the utilization rate of urea, and reducing environmental pollution

Method used

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  • Glutamic acid synergist urea and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0050] Embodiment 1: Preparation of glutamic acid synergistic urea of ​​the present invention

[0051] The steps are as follows:

[0052] Step 1, preparation of glutamic acid synergist

[0053] Prepare a sodium glutamate solution with a concentration of 25% by weight to obtain the glutamate synergist A;

[0054] Step 2, preparation of glutamic acid synergistic urea

[0055] Between the first stage evaporation and the second stage evaporation of the conventional urea prilling tower, use the urea evaporator sold by Yantai Yamei Special Metal Co., Ltd., and use the metering pump to pump 100kg of glutamic acid synergist into 10 tons of urea melt , to obtain a glutamic acid synergistic urea melt;

[0056] Step 3. High tower cooling granulation

[0057] The glutamic acid synergistic urea molten liquid obtained in step 2 is pumped into the tower top reaction tank through the urea melting pump sold by Xi'an Pump Valve Manufacturing Co., Ltd., sprayed out through the rotating nozzl...

Embodiment 2

[0060] Embodiment 2: Preparation of glutamic acid synergistic urea of ​​the present invention

[0061] This embodiment is carried out in the same manner as in Example 1, except that a sodium glutamate solution with a concentration of 15% by weight is used as the glutamic acid synergist A; 300 kg of glutamic acid synergist and 10 tons of urea melt are used.

[0062] According to the analysis method described in this specification, the nitrogen content of the glutamic acid-enhanced urea obtained in this example is 46.0% based on the total weight of the glutamic acid-enhanced urea.

Embodiment 3

[0063] Embodiment 3: Preparation of glutamic acid synergistic urea of ​​the present invention

[0064] This embodiment is carried out in the same manner as Example 1, just use concentration 12% by weight sodium hydroxide solution and glutamic acid to mix by the ratio of 2.3: 1 (weight ratio), obtain glutamic acid synergist B; 400kg of glutamic acid synergist and 10 tons of urea melt.

[0065] Using the analysis method described in this specification, the nitrogen content of the glutamic acid-enhanced urea obtained in this example is 45.9% based on the total weight of the glutamic acid-enhanced urea.

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Abstract

The invention relates to a glutamic acid synergist urea and a preparation method of glutamic acid synergist urea. The glutamic acid synergist urea provided by the invention consists of a glutamic acid synergist and urea. The production method of the glutamic acid synergist urea comprises the steps of preparation of the glutamic acid synergist, preparation of glutamic acid synergist urea, high tower cooling granulation and the like. By the fertilizer growth promotion effect of active ingredients in the glutamic acid synergist of the fertilizer on crops, the storage state of nitrogen elements in the plants can be improved, the ability of the crops to absorb nutrients is strengthened, the crop yield and the crop quality are improved, the utilization ratio of the fertilizer is increased (by 5%-10%), the loss of soil nutrients is reduced, and secondary pollution is avoided. The fertilizer product prepared by the invention is wide in source of raw materials, and has excellent application prospect.

Description

【Technical field】 [0001] The invention belongs to the technical field of fertilizers. More specifically, the present invention relates to a glutamic acid synergistic urea and a preparation method thereof. 【Background technique】 [0002] Urea is the nitrogen fertilizer with the highest nitrogen content, the largest agricultural demand, and the widest application range. Urea has high activity and is transformed quickly in the soil. It can cause gaseous loss through ammonia volatilization or denitrification. After being converted into nitrate nitrogen, it is not easy to be adsorbed by soil colloids, and it is easy to leaching in the soil. The absorption and utilization of urea nitrogen by crops The utilization rate is very low, and the utilization rate is only about 35%, which not only causes economic losses, but also causes serious environmental pollution due to nitrate, nitrite, and nitrogen oxides formed by the decomposition and conversion of urea. [0003] In order to sol...

Claims

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Application Information

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IPC IPC(8): C05G3/08C05G3/90
Inventor 袁亮林治安赵秉强李燕婷温延臣杨相东李娟戚剑王薇
Owner INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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