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Efficient environment-friendly inorganic fertilizer based on biomass charcoal and production process thereof

A technology of biochar and production process, which is applied in the direction of phosphate fertilizer, fertilization device, fertilizer mixture, etc., can solve the problem of low nitrogen utilization rate, achieve high nitrogen utilization rate, improve anti-coking performance, and high-efficiency absorption effect

Inactive Publication Date: 2016-11-09
GUANGDONG DAZHONG AGRI SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the nitrogen fertilizer products currently on the market have low nitrogen use efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A kind of production technology of high-efficiency environment-friendly inorganic fertilizer based on biochar, comprises the following steps:

[0047] (1) Mixing biochar and phosphoric acid to obtain a mixed solution;

[0048] (2) Pass ammonia gas into the mixed liquid to react to obtain the reaction liquid;

[0049] (3) Introducing carbon dioxide into the reaction liquid for reaction and drying to obtain highly efficient and environmentally friendly inorganic fertilizers.

[0050] In the step (1), the mass ratio of biochar to phosphoric acid is 7:1, and the mass fraction of phosphoric acid is 85%.

[0051] In the step (1), the biomass charcoal is bamboo biomass charcoal produced by pyrolyzing bamboo at a temperature of 550°C.

[0052] In the step (1), the specific surface area of ​​the biochar is 360m 2 / g.

[0053] In the step (2), the ammonia gas is obtained by heating and evaporating ammonia water, and the amount of ammonia water is 25% of the mass of the biocha...

Embodiment 2

[0060] The difference between this embodiment and the above-mentioned embodiment 1 is:

[0061] In the step (1), the mass ratio of biochar to phosphoric acid is 8:1.2, and the mass fraction of phosphoric acid is 88%.

[0062] In the step (1), the biomass charcoal is bamboo biomass charcoal produced by pyrolyzing bamboo at a temperature of 580°C.

[0063] In the step (1), the specific surface area of ​​the biochar is 370m 2 / g.

[0064] In the step (2), the ammonia gas is obtained by heating and evaporating ammonia water, and the amount of ammonia water is 28% of the mass of the biochar.

[0065] In the step (3), the amount of carbon dioxide used is 4% of the mass of the biochar.

[0066] In the step (3), the nitrogen content of the prepared high-efficiency and environment-friendly inorganic fertilizer is 10%-12%.

[0067] The high-efficiency environment-friendly inorganic fertilizer and the conventional nitrogen fertilizer prepared in this example were applied to the soybe...

Embodiment 3

[0069] The difference between this embodiment and the above-mentioned embodiment 1 is:

[0070] In the step (1), the mass ratio of biochar to phosphoric acid is 8.5:1.5, and the mass fraction of phosphoric acid is 90%.

[0071] In the step (1), the biomass charcoal is bamboo biomass charcoal produced by pyrolyzing bamboo at a temperature of 600°C.

[0072] In the step (1), the specific surface area of ​​the biochar is 380m 2 / g.

[0073] In the step (2), the ammonia gas is obtained by heating and evaporating ammonia water, and the amount of ammonia water is 30% of the mass of the biochar.

[0074] In the step (3), the amount of carbon dioxide used is 5% of the mass of the biochar.

[0075] In the step (3), the nitrogen content of the prepared high-efficiency and environment-friendly inorganic fertilizer is 11%.

[0076] The high-efficiency and environment-friendly inorganic fertilizer and the conventional nitrogen fertilizer prepared in this example were applied to the pad...

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Abstract

The invention relates to the technical field of fertilizer, in particular to efficient environment-friendly inorganic fertilizer based on biomass charcoal and a production process thereof. The production process includes the following steps that 1, the biomass charcoal and phosphoric acid are mixed to obtain a mixed solution; 2, ammonia gas is introduced into the mixed solution to obtain a reaction solution; 3, carbon dioxide is introduced into the reaction solution to react, and the efficient environment-friendly inorganic fertilizer is prepared through drying. The efficient environment-friendly inorganic fertilizer based on the biomass charcoal is prepared through the production process. The efficient environment-friendly inorganic fertilizer has slow-release and long-acting functions, ammonia gas volatilization speed is low, nitrate leaching loss is small, the inorganic fertilizer can be efficiently absorbed by plants, and the nitrogen use ratio is high.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a high-efficiency and environment-friendly inorganic fertilizer based on biomass charcoal and a production process thereof. Background technique [0002] Fertilization has become one of the indispensable technical measures of agricultural production, contributing more than half of crop production. The utilization rate of fertilizers in China has always been relatively low. For example, the average utilization rate of nitrogen fertilizers for current crops is only about 30%, which is nearly 20 percentage points lower than that of developed countries. This is due to the unscientific fertilization methods on the one hand, and the fertilizer itself on the other hand. characteristics. It is urgent to improve fertilizer utilization efficiency, and research and development of new multifunctional fertilizers is one of the important ways to improve fertilizer utilization efficiency. ...

Claims

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Application Information

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IPC IPC(8): C05G3/00C01B31/02B01J29/46
CPCB01J29/46B01J2229/18C05B7/00C05G3/00C05G5/30C05D9/00
Inventor 罗伯特·弗拉纳根邸洪杰王海龙刘兴元林小明
Owner GUANGDONG DAZHONG AGRI SCI CO LTD
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