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Nitrohumic acid urea fertilizer and preparation method thereof

A technology of nitro humic acid and humic acid salt, applied in ammonium nitrate fertilizer, urea compound fertilizer, nitrogen fertilizer and other directions, can solve problems such as economic loss, decomposition loss, environmental pollution, etc., and achieve the goal of reducing pollution and increasing utilization rate. Effect

Inactive Publication Date: 2019-01-15
SICHUAN GOLDEN ELEPHANT SINCERITY CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after urea is applied to the soil, it will be quickly decomposed and lost under the action of soil urease and nitrifying bacteria, and its utilization rate is only about 35%. , nitrogen oxides will seriously pollute the environment

Method used

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  • Nitrohumic acid urea fertilizer and preparation method thereof

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preparation example Construction

[0031] The embodiment of the present invention also provides a kind of preparation method of above-mentioned nitrohumic acid urea fertilizer, it comprises:

[0032] Mix and granulate the nitrohumate solution and molten urea.

[0033] The temperature of molten urea is 120-130°C. In actual production, the nitrohumate solution can be added by metering at the outlet of the urea melting pump through a metering pump. The nitrohumate solution and molten urea are fully mixed evenly during the pipeline input process, and then The nitrohumic acid urea fertilizer is obtained by granulating, cooling and packing.

[0034] Further, the preparation method also includes: mixing humate, liquid nitrogen fertilizer, and additives to prepare a nitrohumate solution. In actual production, when the liquid nitrogen fertilizer uses a mixed solution of urea and ammonium nitrate, the mixed solution can be prepared by first mixing the urea solution at 100-120°C and the ammonium acid solution at 110-130...

Embodiment 1

[0037] Present embodiment provides a kind of nitrohumic acid urea fertilizer, according to mass percentage, it comprises:

[0038] 1% nitrohumate solution, and 99% urea.

[0039] Wherein, in parts by weight, the nitrohumate solution includes: 25 parts of potassium fulvic acid, 75 parts of urea ammonium nitrate solution (urea:ammonium nitrate:water=36:45:19), and 0.002 parts of defoamer share.

[0040] Its preparation flow chart refers to figure 1 Shown, concrete preparation method is as follows:

[0041] S1. Add the urea solution with a mass fraction of 80% from the urea system and the ammonium nitrate solution with a mass fraction of 90% from the ammonium nitrate system into the mixing tank A according to metering, and stir until the solution is clear and transparent to obtain urea-ammonium nitrate solution.

[0042] S2. Add the urea-ammonium nitrate solution into the mixing tank B, then add a certain amount of potassium fulvate, and stir for 15 minutes at a stirring spee...

Embodiment 2

[0047] Present embodiment provides a kind of nitrohumic acid urea fertilizer, according to mass percentage, it comprises:

[0048] 1% nitrohumate solution, and 99% urea.

[0049] Wherein, in parts by weight, the nitrohumate solution includes: 30 parts of potassium fulvic acid, 70 parts of urea ammonium nitrate solution (urea:ammonium nitrate:water=36:45:19), and 0.002 parts of defoamer share.

[0050] Its preparation method is as follows:

[0051] S1. Add the urea solution with a mass fraction of 85% from the urea system and the ammonium nitrate solution with a mass fraction of 90% from the ammonium nitrate system into the mixing tank A according to the metering, and stir until the solution is clear and transparent to obtain urea-ammonium nitrate solution.

[0052] S2. Add the urea-ammonium nitrate solution into the mixing tank B, then add a certain amount of potassium fulvate, and stir for 10 minutes at a stirring speed of 2000 rpm to obtain a potassium nitrohumate solutio...

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Abstract

The invention provides nitrohumic acid urea fertilizer, and relates to the technical field of fertilizer. Humate and fused urea are mixed and used according to the certain ratio, due to humate contains a great amount of active functional groups, humate can form chelate and complex with nitrogen, or conduct ionic exchange and physical adsorption except that humate has the good activity. The fertilizer can effectively reduce decomposition and loss of urea, increases the utilization rate of urea, and reduces the pollution to the soil. The preparation method of the nitrohumic acid urine fertilizeris easy to operate, has low requirement for equipment, and can achieve large-scale industrialized production of nitrohumic acid urea fertilizer.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a nitrohumic acid urea fertilizer and a preparation method thereof. Background technique [0002] Urea, also known as carbamide, is an organic compound composed of carbon, nitrogen, oxygen, and hydrogen. It is a white crystal. One of the simplest organic compounds, it is the major nitrogenous end product of the breakdown of protein metabolism in mammals and some fish. [0003] The nitrogen content of urea is as high as 46%, which is the nitrogen fertilizer with the highest nitrogen content. At the same time, as a neutral fertilizer, urea is suitable for various soils and plants, and has the largest agricultural demand and a wide range of applications. However, after urea is applied to the soil, it will be quickly decomposed and lost under the action of soil urease and nitrifying bacteria, and its utilization rate is only about 35%. , Nitrogen oxides will seriously pollute ...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/04C05G3/08C05G3/80C05G3/90
CPCC05C1/00C05G3/00C05G3/80C05G3/90C05C9/00C05F11/02
Inventor 陈刚唐印刘朝慧雷珂任长军袁凯
Owner SICHUAN GOLDEN ELEPHANT SINCERITY CHEM CO LTD