Tar filter of biomass gas and reverse purging device thereof

Abstract

The invention provides a tar filter of biomass gas and a reverse purging device thereof. The tar filter comprises a filter shell with a biomass gas inlet and a tar outlet, a sealing head with a cleangas outlet and a filtering component, wherein the filtering component is composed of an inner cylinder frame, a filtering silk screen, reinforcing ribs, a fixed support ring and a corrugated plate; the biomass gas with tar enters through the side surface of the lower part of the tar filter and is collided and baffled by the corrugated plate, then large-particle tar fog drops are removed, then thebiomass gas is filtered by the filtering silk screen and is subsequently discharged out along the clean gas outlet at the top of the tar filter; the tar collection rate is high; the tar removal effectis excellent; meanwhile, the reverse purging device is adopted; two tar filters alternately run through pressure difference control or timed control of eight switch valves; one tar filter is used forfiltering, and the other tar filter is used for reversely purging; the problem that the blockage is easily caused by high viscosity of the tar is solved; the shutdown of the device is avoided; the long-period stable operation of the follow-up system is achieved.

Description

technical field [0001] The invention belongs to the technical field of energy and chemical industry, and in particular relates to a tar filter and a backflushing device for biomass gas. Background technique [0002] In recent years, biomass power generation technology, as an important way to develop and utilize biomass energy, has received widespread attention in China. Biomass gas power generation technology can not only reduce the consumption of coal resources, protect the environment, reduce pollutant emissions, and promote the optimization of energy structure, but also has great significance in the rational use of local biomass resources of the project, the enhancement of economic benefits of enterprises, and the increase of farmers' income. [0003] However, since biomass gas contains tar with complex components, it will be cooled and liquefied due to heat loss during the transportation process, which will block and corrode the equipment, pipelines, valves and instrumen...

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Problems solved by technology

[0005] In order to overcome the above-mentioned problems in the prior art, the purpose of the present invention is to provide a tar filter and backflushing device for biomass gas, which solves the problem of easy blockage due to high viscosity of tar, avoids device shutdown, and realizes follow-up systems Long-term stable operation

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