Assessing electrostatic precipitator performance

Article Abstract:

The performance of electrostatic precipitators (ESPs) can be evaluated with regards to collection efficiency, through theoretical and practical means. Highly effective in removing particles from gases, these pollution-control instruments are utilized in various kinds of chemical process facilities, including cement plants, thermal power units, and pulp-and-paper mills. With a relatively low payback time of usually three to five years, ESPs are employed to treat high-flowrate, particulate-laden gases, either as stand-alone units or in conjunction with baghouse filters, hydrocyclones, cyclones and wet scrubbers.

Comment:

Performance of electrostatic precipitators can be evaluated w/ regards to collection efficiency, via theoretical/practical means

United States, Electrostatic Precipitators, Dust collectors, Electrostatic separators

A new superacid catalyst goes on the market

Article Abstract:

Japan Energy Corp. (JEC) is offering a pelletized form of sulfated zirconia that can be used as a good superacid catalyst. The substance can substitute catalysts such as sulfuric acid, aluminum chloride, hydrogen fluoride. The pelletized form that can be used in isomerization, esterification, and alkylation has less corrosive properties than conventional acid catalysts, according to Teruaki Yamada, a principal researcher at JEC's Refining Research & Technology Center. The pellets measure 2.5 mm to 8 mm in lenght and 0.8 mm to 3 mm in diameter.

Comment:

Offers a pelletized form of sulfated zirconia that can be used as a good superacid catalyst

All Other Miscellaneous Chemical Product and Preparation Manufacturing, Chemical Catalysts, Catalysts, Japan Energy Corp.

Titania plus UV light proves deadly for dioxin

Article Abstract:

Yamada Industries Co of Tokyo, Japan, in cooperation with the National Industrial Research Institute of Nagoya, has developed a system capable of decomposing dioxin in incinerator exhaust gas. The system, which utilizes light-sensitive titania as the catalyst for the decomposition reaction, is composed of two cylinders each holding 16 UV lamps. The device, which is expected to be commercially available by the end of 2000, does not require cooling of the exhaust gas.

Air Pollution Control Equip, Air pollution control equipment, Yamada Industries Co.