Straight-flow type pre-separating device for high temperature gas filtration and filter of device

Abstract

The invention discloses a straight-flow type pre-separating device for high temperature gas filtration and a filter of the device. The straight-flow type pre-separating device comprises a cylindrical main body, a helical diffuser axially arranged in the cylindrical main body, and a barrel-type outer cover sleeved at the outside of the cylindrical main body. The straight-flow type pre-separating device can be used for effectively reducing the dust load of a filtering unit and lowering the frequency of deashing by back flushing so as to reduce the heat impact from the back-blown airflow to a filtering pipe and prolong the service life of the filtering pipe; the pressure of the straight-flow type pre-separating device is reduced so as to reduce the operation energy consumption of the whole filtering system; the relation of the dust particle size and the filtering pipe can be rationally matched by the pre-separating device to overcome the phenomenon of the premature failure of the filtering pipe since the micropore is blocked by fine particles in the prior art; the straight-flow type pre-separating device cannot change the direction of the coming airflow, is convenient for the connection with the pipeline, and can be optimally arranged so that the filtering system structure is compact.

Description

technical field [0001] The invention relates to a high-temperature gas-solid separation device, in particular to a straight-through pre-separation device for high-temperature gas filtration and a filter thereof. Background technique [0002] In chemical industry, petroleum, metallurgy, electric power and other industries, high-temperature dust-containing gases are often produced; because different processes need to recover energy and meet environmental protection emission standards, these high-temperature dust-containing gases need to be dedusted. High-temperature gas dedusting is a technology that directly separates gas from solid under high-temperature conditions to achieve gas purification. It can maximize the use of physical sensible heat, chemical latent heat and kinetic energy of the gas to improve energy utilization, while simplifying the process and saving equipment investment. [0003] The equipment used in high temperature gas filtration technology is a high tempe...

AI Technical Summary

Problems solved by technology

[0017] Another object of the present invention is to provide a straight-through pre-separation device and its filter for high-temperature gas filtration. The pressure drop of the straight-through pre-separation device can reduce the operating energy consumption of the entire filtration system, and is especially suitable for Handle the working conditions of large gas volume and high dust concentration; the pre-separation device can reasonably match the relationship between the dust particle size and the filter tube, so as to overcome the phenomenon that the micropores of the filter tube are blocked by fine particles and cause premature failure in the existing technology

Images