Effective selection of filter dust collectors

Journal Article · Thu Jul 01 00:00:00 EDT 1993 · Chemical Engineering (New York); (United States)

OSTI ID:6338356

Croom, M L ^[1]

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1. Staclean Diffuser Co., Salisbury, N.C. (United States)

A wide range of equipment is available to remove particulate matter from gas streams. But when high collection efficiency is required and the average particle size is small, the method of choice is commonly the filter dust collector. Two major filter-collector designs are the baghouse and the cartridge filter. Here the author focuses mainly on baghouses, which typically consist of arrays of suspended vertical filter bags. However, many of the principles and guidelines apply to cartridge filters as well, and in some cases to solid-gas separation in a wider sense. Environmental protection is commonly considered the major purpose of effective dust collection. However, it can also pay off in increased product recovery or yield, improved control of product quality, and lower energy consumption. Baghouses usage is far from staid, as developments continue to unfold. For instance, high-temperature pulsed-jet baghouses, discussed below, are being groomed for combined removal of SO[sub x] and NO[sub x] along with dust particulates in operations well above 500F. Development of ceramic fabric and porous metal filters at competitive cost may raise this ceiling to as high as 1,200F, thus promising to lessen or eliminate the need for heat exchangers at gas-cleanup units. A baghouse outfitted with woven ceramic-filter bags has already demonstrated up to 90% sulfur dioxide removal and over-90% NO[sub x] removal at 850F, while also meeting or exceeding U.S. Environmental Protection Agency particulate-emission standards. The paper discusses how they work; removing the recovered dusts; bag filtration velocities; sizing; pressure drop; measuring performance; and recommendations.

• OSTI ID: 6338356
• Journal Information: Chemical Engineering (New York); (United States), Vol. 100:7; ISSN 0009-2460
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
BAGHOUSES
PERFORMANCE
AIR POLLUTION CONTROL
COMPILED DATA
DUSTS
FLOW RATE
GASES
MATERIALS RECOVERY
NITROGEN OXIDES
OPERATION
PRESSURE DROP
REMOVAL
SIZING
SULFUR DIOXIDE
TECHNOLOGY ASSESSMENT
CHALCOGENIDES
CONTROL
DATA
EQUIPMENT
FLUIDS
INFORMATION
MANAGEMENT
NITROGEN COMPOUNDS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
PROCESSING
SULFUR COMPOUNDS
SULFUR OXIDES
WASTE MANAGEMENT
WASTE PROCESSING
540120* - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)