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Resource utilization method of agricultural and forestry wastes

A technology for recycling agricultural and forestry waste, applied in the field of environmental protection, can solve problems such as unclear market prospects, lack of economic feasibility, and complicated process of resource-based products, so as to improve added value and market application prospects, and simplify marketing work , The effect of simple process

Inactive Publication Date: 2018-11-16
安徽帝元生物科技有限公司
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  • Description
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  • Application Information

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Problems solved by technology

However, the existing recycling methods of agricultural and forestry waste generally have problems such as complex process flow, uncertain market prospects for recycling products, and secondary pollution. As a result, most recycling methods are not economically feasible and can only be Relying on national preferential policies and subsidies to survive, the operation is not sustainable

Method used

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  • Resource utilization method of agricultural and forestry wastes

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Embodiment 1

[0034] This embodiment provides a figure 1 The resource utilization method of agricultural and forestry waste in the process shown, the specific process includes:

[0035] Crush wheat straw into particles with a length of about 4 cm, and perform pyrolysis and gasification in a straw pyrolysis gasification furnace (gasification pyrolysis temperature 500°C, oxygen volume content ≤ 5%) to obtain gas to be purified and biochar; The gas to be purified is rinsed with water to obtain purified gas and leached waste liquid; part of the purified gas is sent to a gas boiler for heating, and the other part is sent to a gas generator to generate electricity. Grid-connected power transmission; after mixing the basic fertilizer, the biochar and the leaching waste liquid in proportion, mechanically extrude and granulate, then use the waste heat of the power generation tail gas to dry, and pack after cooling to obtain the carbon-based fertilizer granule product.

[0036] In the above-mentione...

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Abstract

The invention belongs to the field of environmental protection and particularly relates to a resource utilization method of agricultural and forestry wastes. The method provided by the invention comprises the following steps: (a) carrying out pyrolysis and gasification on the agricultural and forestry wastes to obtain to-be-purified fuel gas and biochar; (b) leaching the to-be-purified fuel gas with water to obtain purified fuel gas and leaching waste liquid, wherein the leaching waste fluid contains wood tar and wood vinegar; (c) carrying out mixing granulation on base fertilizer, the biocharand the leaching waste liquid and then drying to obtain carbon base fertilizer particles. The scheme provided by the invention has the advantages that the wood tar and wood vinegar liquid do not needto be separated; the production process is greatly simplified, and the process flow is simpler and has higher economic feasibility; meanwhile, final products are carbon base fertilizer and the fuel gas only, are single and have a definite market application direction; in addition, all the leaching waste liquid is used for producing the carbon base fertilizer; no discharge sewage is produced and asewage treatment system does need to be built.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a resource utilization method of agricultural and forestry waste. Background technique [0002] Agricultural and forestry waste refers to the organic substances discarded during the entire agricultural production process, such as crop straws, grain husks, fruit shells, dead branches of forest trees, etc. According to statistics, China is the country with the largest output of agricultural and forestry waste in the world, with an annual output of more than 4 billion tons. With the increase of the rural population and the tremendous development of the rural economy, it is estimated that by 2020, the output of agricultural and forestry waste in my country will exceed 5 billion tons. These "misplaced resources" have huge resource capacity and potential. [0003] In the past, the treatment of agricultural and forestry waste in rural areas of our country was mainly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/02C10B57/00C05F11/10
CPCC05F11/10C10B53/02C10B57/00Y02E50/10Y02P20/129
Inventor 叶郭刚
Owner 安徽帝元生物科技有限公司
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