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New technology for producing methane and organic fertilizer by using dry method

An organic fertilizer and biogas technology, applied in the direction of organic fertilizer, organic fertilizer preparation, bio-organic part treatment, etc., can solve the problems of large land occupation, harsh working environment for operators, high labor intensity, etc., and achieve low operating cost, The effect of unique equipment structure and reasonable process

Inactive Publication Date: 2013-05-01
BEIJING UNIV OF AGRI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method must interrupt the fermentation process when feeding and discharging materials, and the equipment occupies a large area of ​​land, and the working environment for operators is harsh and labor-intensive.

Method used

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  • New technology for producing methane and organic fertilizer by using dry method
  • New technology for producing methane and organic fertilizer by using dry method

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Embodiment Construction

[0020] The following is the production process of an embodiment

[0021] 1. The initial state of the equipment: close the sealing cover of the aerobic chamber (1), the sealing cover of the discharge chamber (8), and the valve of the biogas output pipe (13), and open the upper sealing cover (3) of the anaerobic chamber and the lower sealing cover of the anaerobic chamber (5), anaerobic chamber partition door (6), anaerobic chamber partition door (6.2), anaerobic chamber partition door (6.3), exhaust valve (10). Start the exhaust pump (11), because the present invention is integrally sealed and connected, therefore, the air in the equipment is discharged through the exhaust pipe (9), exhaust valve (10), exhaust pump (11), when the inside of the equipment becomes a micro vacuum state , close the anaerobic chamber upper seal cover (3), anaerobic chamber lower seal cover (5), anaerobic chamber partition door (6), anaerobic chamber partition door (6.2), anaerobic chamber partition d...

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Abstract

The invention relates to a new technology for producing methane and an organic fertilizer by using a dry method, which is mainly applied to the technical field of producing methane and organic fertilizers by using municipal solid waste, live stock excrement, crop straws and the like. The new technology is characterized in that a production process includes three phases: a pretreating phase, an anaerobic fermentation phase and an aftertreating phase. In the pretreating phase, the carbon nitrogen ratio of raw materials is regulated to be 25-30:1. In the anaerobic fermentation phase, the temperature is kept about 55 DEG C. An anaerobic fermentation device mainly comprises an aeration cabin (2), an anaerobism cabin (4) and a discharging cabin (7) which are sequentially sealed and connected from top to bottom, wherein partition doors (6), (6.2) and (6.3) are arranged in the aeration cabin (2); an exhaust pipe (9), a valve 910) and an exhaust pump (11) are arranged on the side surface of the discharging cabin; and the side surface of the anaerobism cabin is provided with a methane output pipe (12) and a valve (13). The invention has the advantages of reasonable process, special device structure, low operation cost and wide application range.

Description

technical field [0001] The invention relates to a new technology for dry production of biogas and organic fertilizer. It is mainly used in the technical field of biogas and organic fertilizer production such as municipal solid waste, kitchen waste, poultry manure, and crop straw. Background technique [0002] According to the survey, my country produces 250 million tons of municipal solid waste, more than 3 billion tons of poultry manure, and 1 billion tons of crop straw every year. At present, there are two methods of anaerobic fermentation for the harmless and resourceful anaerobic fermentation of these organic wastes in my country: [0003] One is the production of biogas and organic fertilizer by wet anaerobic fermentation. The method is to isolate the raw materials from the air with water to form an anaerobic environment. This method is relatively mature and is being applied in some places. But its biggest defect is that it consumes a lot of water resources, and at t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05F17/00C05F17/02C05F9/04C02F11/04C12M1/107
CPCY02E50/343C12M21/04C12M21/16C12M29/20C12M41/12Y02E50/30Y02W30/40
Inventor 刘克锋王红利黄友诚李爱和李旭张鹏辉玉红赵彰荣石爱平陈学珍刘永光
Owner BEIJING UNIV OF AGRI