Biogas power generation and complementary energy recovery system

Abstract

The invention relates to a biogas power generation and complementary energy recovery system. The biogas power generation and complementary energy recovery system comprises a dual-film gas holder (91),a biogas decarbonization device (92), a biogas dehydration device (93), a biogas pressurizing pump (94), a granulating machine (95), a biogas power generator group (96), an exhaust heat boiler (97),a softened water processor (99) and a hot water jar (100), wherein a biogas output opening of the dual-film gas holder (91) communicates with an air inlet of the biogas decarbonization device (92) through an air pump. The biogas power generation and complementary energy recovery system disclosed by the invention has the advantages that heat quantity carried by discharged biogas residues and discharged biogas fluid is effectively utilized, so that energy resource consumption required for maintaining the fermentation temperature is reduced, the normal operating of a biogas project is effectivelymaintained, benign circulation of the biogas power generation and complementary energy recovery system is maintained, and the operating cost of the biogas project is reduced; the granulating efficiency of the granulating machine is high, the granule perfection degree is good, and environmental pollution cannot be generated; and ash cannot enter a transmission shaft of the granulating device, so that the service life is long.

Description

technical field [0001] The invention relates to the field of surplus energy utilization equipment, in particular to a biogas power generation and surplus energy recovery system. Background technique [0002] At present, during the operation of biogas projects, in order to maintain the efficient and stable operation of the anaerobic reaction, there are two processes: high-temperature fermentation (50-60°C) and medium-temperature fermentation (30-35°C). Maintaining a constant temperature is the key to ensuring the gas production of biogas projects. The biogas produced needs to be purified before being used as vehicle gas or as liquefied gas. In this way, a large amount of low-grade heat will be generated during the operation of biogas projects. If it is not used, it will cause huge waste; in the existing granulation technology, the material takes a long time to granulate, which affects its granulation efficiency; the material is easy to accumulate in the drum, and the particle...

AI Technical Summary

Problems solved by technology

Maintaining a constant temperature is the key to ensuring the gas production of biogas projects. The biogas produced needs to be purified before being used as vehicle gas or as liquefied gas. In this way, a large amount of low-grade heat will be generated during the operation of biogas projects. If it is not used, it will cause huge waste; in the existing granulation technology, the material takes a long time to granulate, which affects its granulation efficiency; the material is easy to accumulate in the drum, and the particle size of the granulated material is uneven, and the granulation The problem of short device life

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