High-temperature filter for biomass

Abstract

The invention discloses a high-temperature filter for biomass. A box body of the filter is divided into a cyclone chamber and a filtering chamber, wherein the upper part of the cyclone chamber is communicated with the filtering chamber, the inner cavity of the cyclone chamber takes the shape of a barrel, a gas inlet is formed at the cyclone chamber and is tangent with the wall of the inner cavity of the cyclone chamber, a filtering slot is formed in the inner side wall of the filtering chamber, a filtering mesh is arranged in the filtering slot in a paving way, a layer of filtering medium is arranged on the upper surface of the filtering mesh in a paving way so as to be used for filtering gas containing biomass impurities, an air chamber which can accommodate clean biomass gas is arranged at the lower part of the filtering slot, the air chamber is communicated with a gas outlet, and the gas outlet is connected with a back-blowing pipe. The high-temperature filter for the biomass can realize operation of automatically eliminating blockage under a high-temperature state, thus being convenient and fast and saving labor.

Description

technical field [0001] The invention belongs to filtering equipment, in particular to a filter suitable for filtering biomass gas at high temperature. Background technique [0002] High temperature filtration technology is an important equipment for energy saving and emission reduction of industrial furnaces in the fields of metallurgy, energy, chemical industry, materials, incineration and other fields. In the international research on high-temperature dust removal technology, there are mainly forms of cyclone dust removal, high-temperature electrostatic precipitator, ceramic filter tube filtration, metal filter tube filtration and particle bed filtration. [0003] Medium and low temperature cyclone dust collectors (<400°C) are widely used. They are characterized by simple structure, easy operation, and low price, but the dust removal efficiency is not high. Even the most efficient cyclone dust collector can only reach 96% for 50μm dust. %; for 5μm dust, only about 73%;...

AI Technical Summary

Problems solved by technology

In 1970, Ducon proposed the granular layer dust collector of fluidized reverse blowing dust cleaning method, and designed several forms, but it has never been tested and applied in industry.

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