Full mixed anaerobic reaction circulating device and circulating method for methane reaction raw materials

Abstract

The present invention discloses a total mixed anaerobic reaction circulation device for methane, comprising a total mixed anaerobic reaction tank and a circulation tank, wherein the top portion of the total mixed anaerobic reaction tank is connected to the circulation tank via the overflow pipe; the lower portion of the circulation tank is connected to the lower portion of the anaerobic reaction tank via the transporting pipe and the material transporting pump; and the circulation tank is connected to the transporting pipe that supplies the methane reaction materials. The circulation tank is provided with the heat exchanger and the central cylinder therein; the overflow pipe is connected to the central cylinder; and the lower end of the central cylinder has the outlet pipe. The present invention also provides a circulation method of the methane reaction material. In the present invention, the use of the circulation tank simultaneously takes into account the functions such as addition and stirring of the methane reaction materials, heating of the methane reaction materials, adjustment of PH value, methane liquid recovery, etc. The total mixed anaerobic reaction circulation device for methane of the present invention is suitable for the large-scale industrialized methane project and can be popularized and used in cold areas.

Description

technical field [0001] The invention relates to a fully mixed anaerobic reaction cycle device for biogas, which is especially suitable for biogas production with crop straw, animal manure and organic waste water as main raw materials. Background technique [0002] Anaerobic fermentation has been widely used in the treatment of organic matter, such as the production of biogas, the treatment of organic waste and waste liquid rich in organic matter, etc. [0003] Biogas digesters are one of the most original applications of anaerobic fermentation. They use crop straw and animal manure as the main raw materials to produce biogas for domestic use. [0004] Usually, the configured biogas raw materials are added from the top of the biogas digester. Due to insufficient mixing, it is easy to cause agglomeration at the top and hinder the generation of biogas. [0005] Traditional biogas digesters are not convenient for arranging mechanical stirring devices. In the process of industr...

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Problems solved by technology

[0016] In the process of implementing the biogas equipment, the inventors found that there are still many inconveniences in the operation of the above-mentioned biogas equipment

Due to the large size of the fermenter, it is inconvenient to add a heat exchange and heating device, so it can only be operated in a greenhouse or built in a place with a suitable temperature, which brings troubles to the application of biogas equipment, especially for regions in the north with long winters difficult to adapt

It is also very inconvenient when the pH value of the biogas reaction raw material in the fermenter needs to be adjusted

[0017] In addition, the inventors found that by making the biogas reaction raw material self-circulate, the energy consumption level is still quite high, moreover, the resistance of the biogas reaction raw material self-circulation is relatively large, the wear and tear on the pipeline and the pump is serious, and there is a risk of blocking the pump and pipeline at the same time. Hidden danger

[0018] To sum up, the current anaerobic filter cannot take into account the biogas raw material circulation, raw material adaptability, biogas output rate and energy consumption at the same time. There are insufficient biogas reaction raw material circulation, single raw material, and small volume. Low biogas yield (can only go up to 1.0) and cost one or more disadvantages of high school

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