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南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:

2017年02期

Page:

42-

Research Field:

能源与动力工程

Publishing date:

Info

Title:

Numerical Investigation of Line Tube Thermal Emission StyleHigh-Temperature Electrostatic Precipitator

Author(s):

Yu Xuping¹; Dai Weimin²; Xi Jianfei²; Gu Zhongzhu²

(1. Xiamen Security Electronic Co.,Ltd,Xiamen 361012,China)(2. School of Energy and Mechnical Engineering,Nanjing Normal University,Nanjing 210042,China)

Keywords:

thermal emission; high-temperature electrostatic precipitation; numerical simulation

PACS:

TU834.6

DOI:

10.3969/j.issn.1672-1292.2017.02.007

Abstract:

The thermal emission style high-temperature electrostatic precipitation is an innovative technique for cleaning up high-pressure hot flue gases. It utilizes the negative electrode made of tungsten doped with rare earth oxides which emits a large number of electrons when heated,instead of the corona discharge in traditional ESP,to charge dust particles. The charged particulate is collected by grounded plates under the action of the electric field. This article has established a dust collection mathematical and physical model of the wire-pipe thermal emission style high-temperature electrostatic precipitation,which has covered the particle charging equation,the electric field equation,the flow field and the dust pellet density field,compiled computational procedure of the dust particle charged quantity and the dust removal efficiency using MATLAB,and carried on the numerical calculus,obtained dust electrically charged quantity and dust removal efficiency under the dissimilar condition. This article has systematically studied each kind of influencing factor and the dust removal efficiency relationship,and quantitative pointed out:to reduce the flue gas flow rate of imports,to enhance the temperature and the particle charged area voltage and the dust removal area voltage,to increase the dust removal area length,to reduce dust removal tube’s radius,may obviously raise its particle collection efficiency.

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Last Update: 2017-06-30