Electrostatic reinforcing bag type dust collector with reverse electric field

Abstract

The invention relates to an electrostatic reinforcing bag type dust collector with a reverse electric field. The electrostatic reinforcing bag type dust collector adopts the technical scheme that an inlet box (1) and an outlet box (16) are correspondingly and fixedly connected with the inlet end and the outlet end of a dust collector body (2); the dust collector body (2) adopts a structure that the dust collector body (2) is divided into a dust precharging region and a dust filtering region by using a spoiler (9); the dust precharging region is arranged in the structure of the dust collector body (2) or in the middle part inside a shell of the dust collector body (2) along an air inlet direction; the dust filtering region is symmetrically arranged at two sides of the dust precharging region; corona electrode wires (3) of the dust precharging region and dust collection pole plates (7) are equidistantly arranged in parallel at intervals; the dust filtering region is divided into an air purifying chamber (14) and a filtering chamber (19) by a pattern plate (17) in the dust filtering region; a bag mouth of a filter bag unit (18) formed in the filtering chamber (19) is communicated with the air purifying chamber (14); and an outlet of the air purifying chamber (14) is the outlet end of the dust collector body (2). The electrostatic reinforcing bag type dust collector has the characteristics of high dust collection efficiency, good ash removal effect and no phenomenon of bag burning.

Description

technical field [0001] The invention belongs to a bag type dust remover, in particular to a reverse electric field electrostatically enhanced bag type dust remover. technical background [0002] It has long been noticed that whether it is to charge the dust, or the fiber, or both the fiber and the dust, the fiber filtration efficiency of the bag filter will be improved (Penney G W. Electrostatic effects in fiber filtration: electric field, filter Materials and Particles, Proceedings of the American Society for Environmental Defense, 142a, 1978). Compared with ordinary bag filter, electrostatic enhanced bag filter has more outstanding dust removal performance. [0003] In 1970, American Precision Industry Company first developed a pre-charged electric bag filter, called Apitolon electric bag filter (Inculet I E, Castle G S P. Axisymmetric charged medium electrostatic filtration. ASHRAE J., 21: 47-52, 1971), this kind of electrostatic bag filter is charged with fiber and dus...

AI Technical Summary

Problems solved by technology

In 2004, this new type of dust collector was applied to the dust removal renovation project of power plant boilers, which continuously broadened the application field of this technology (Huang Wei, Lin Hong, Zheng Kuizhao, Wu Jianghua, Que Changxing. Breakthrough of electric-bag composite dust collector, China Proceedings of the Environmental Protection Academic Annual Conference of the Silicate Society, 2007), but this kind of electric bag composite dust collector only has dust charging, and there is no external electric field between the filter layers; it cannot avoid the accumulation of charged dust on the surface of the filter bag. Anti-corona burning bag phenomenon; ...

Images