Study on the Performance of Metal Fiber Filter for High Temperature Dust Removal

doi:10.12096/j.2096-4528.pgt.19181

Abstract

Abstract:

In order to solve the filtering performance of the metal fiber filter material for high temperature dust removal, a comparative test method was adopted to study the filtration performance of metal fiber filter media, the ordinary needle felt filter media, and the poly tetra fluoro ethylene (PTFE) membrane filter media. It is found that before the aging test, the metal fiber filter media has a higher emission concentration, but after aging, the emission concentration is less than 0.1 mg/m³. The cleaning cycle of the metal fiber filter media is 2 times of needle felt filter material. The residual resistance of the metal fiber filter media is about 350 Pa, which is basically the same as that of ordinary needle felt and PTFE membrane filter media. As a new type of filter media, the metal fiber filter media has good filtration performance and can fully meet the requirements of high temperature dust removal performance.

Key words: baghouse/electrostatic fabric hybrid particulate collector, high temperature dust removal, needle felt filter media, metal fiber filter media

CLC Number:

TK 47

Meiling LIU, Minchao SHEN, Hanxiao LIU, Zhaomei CHEN. Study on the Performance of Metal Fiber Filter for High Temperature Dust Removal[J]. Power Generation Technology, 2022, 43(2): 362-366.

Figures/Tables 5

References 15

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序号	阶段	试验内容	是否测试排放浓度
1	调整	30个周期，定压1 kPa清灰	是
2	老化	间隔5 s，10 000次清灰	否
3	稳定	10个周期，1 kPa定压清灰	否
4	测试	2 h，1 kPa定压清灰	是
5	选择性测试	2 h，1.8 kPa定压清灰	是

序号	阶段	试验内容	是否测试排放浓度
1	调整	30个周期，定压1 kPa清灰	是
2	老化	间隔5 s，10 000次清灰	否
3	稳定	10个周期，1 kPa定压清灰	否
4	测试	2 h，1 kPa定压清灰	是
5	选择性测试	2 h，1.8 kPa定压清灰	是

参数	数值	容许偏差范围
过滤速度/(m/min)	2	±3%
粉尘质量浓度/(g/m³)	5	±7%
粉尘中位径/μm	4.5	—
清灰阻力/kPa	1	±1%
清灰压力/MPa	0.5	±3%
脉冲阀开启时间/ms	60	—

参数	数值	容许偏差范围
过滤速度/(m/min)	2	±3%
粉尘质量浓度/(g/m³)	5	±7%
粉尘中位径/μm	4.5	—
清灰阻力/kPa	1	±1%
清灰压力/MPa	0.5	±3%
脉冲阀开启时间/ms	60	—

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