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
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[0050] Example 1: Preparation of glutamate-enhanced urea of the present invention
[0051] The steps are as follows:
[0052] Step 1. Preparation of glutamate 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 glutamate-enhanced urea
[0055] Between the first stage and the second stage of the conventional urea prilling tower, the urea evaporator sold by Yantai Yamei Special Metal Co., Ltd. is used to pump 100kg of glutamic acid synergist into 10 tons of urea melt using a metering pump , To obtain a glutamic acid-enhanced urea melt;
[0056] Step three, high tower cooling and granulation
[0057] The glutamic acid-enhanced urea melt obtained in step 2 is pumped into the top reaction tank through a urea melting pump sold by Xi’an Pump Valve Manufacturing Co., Ltd., and sprayed out through a rotating nozzle, and naturally cooled into granules during the falling process. The glu...
Example Embodiment
[0060] Example 2: Preparation of glutamate-enhancing urea of the present invention
[0061] This example was carried out in the same manner as Example 1, except that a sodium glutamate solution with a concentration of 15% by weight was used as glutamate synergist A; 300 kg of glutamate synergist and 10 tons of urea melt were used.
[0062] According to the analysis method described in this specification, the nitrogen content of the glutamate-enhanced urea obtained in this example is 46.0% based on the total weight of the glutamate-enhanced urea.
Example Embodiment
[0063] Example 3: Preparation of glutamate-enhanced urea of the present invention
[0064] This example was carried out in the same manner as Example 1, except that a 12% by weight sodium hydroxide solution and glutamic acid were mixed in a ratio of 2.3:1 (weight ratio) to obtain glutamic acid synergist B; use 400kg of glutamic acid synergist and 10 tons of urea melt.
[0065] According to the analysis method described in this specification, the nitrogen content of the glutamate-enhanced urea obtained in this example is 45.9% based on the total weight of the glutamate-enhanced urea.
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