DUST DEPOSIT PROFILES IN A HIGH-VELOCITY PULSE-JET FABRIC FILTER

被引：12

作者：

ELLENBECKER, MJ

LEITH, D

机构：

[1] Department of Environmental Health Sciences, Harvard School of Public Health, Boston, MA, 02115

来源：

JOURNAL OF THE AIR POLLUTION CONTROL ASSOCIATION | 1979年 / 29卷 / 12期

关键词：

Air filters - Dust abatement - Filtration - Fly ash;

D O I：

10.1080/00022470.1979.10470920

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Dust deposit profiles in a pilot-scale pulse-jet fabric filter were measured using a beta gauge. Fly ash was collected on polyester needled felt bags, and the dust profiles were measured after the test system was operated to equilibrium at superficial filtration velocities of 50, 75, 100, 125, and 150 mm/s. The profiles measured show that a large mass of dust is retained on the fabric of a pulse-jet filter when operated at high filtration velocities. This dust mass retention can be caused by two mechanisms: the failure to remove dust from the fabric during a cleaning pulse, and the redeposition of suspended dust onto the fabric after a cleaning pulse. The dust deposit measured at the highest test velocity was found to be much different from the deposits measured at all other velocities. The deposit found at 150 mm/s had almost twice the average areal density and was more evenly distributed than the deposits found at lower velocities. © 1979 Air and Waste Management Association.

引用

页码：1236 / 1241

页数：6

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JOURNAL OF THE AIR POLLUTION CONTROL ASSOCIATION, 1977, 27 (07) :636-642

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