Catalytically enhanced packed tower scrubbing
- ICI Katalco, Cleveland (United Kingdom)
An enhanced wet scrubbing process for the treatment of gas streams containing odours and low level VOC`s is presented. It comprises essentially a single scrubbing column and a fixed bed catalytic reactor through which the dilute alkaline bleach scrubbing liquor is recirculated. The process has significant cost advantages over conventional chemical scrubbing technology, and copes well with peaks in odour levels. Traditional bleach scrubbing, and the improvements in process chemistry and the flowsheet afforded by inclusion of the catalyst, are discussed. The catalyst enables many of the well known problems associated with bleach scrubbing to be overcome, and facilitates odour removal efficiencies of greater than 99% in a single column. Pilot plant data from trials on sewage treatment works are presented. These show clearly the ability of the catalytically enhanced process to achieve sulphide and odour removals in excess of 99% in the single column. Case studies of some of the existing commercial installations are given, indicating the wide range of applications, industries and scale of the installed units. Comparative data are presented, measured on a commercial unit for the conventional operation of a bleach scrubber, and with the retrofitted catalyst in use. These data show clearly the benefits of the catalytic process in terms of removal efficiencies; and hence by inference also in equipment size and costs. The catalytic process is also shown to achieve very high removal efficiencies of organo-sulphides in a single column. 8 refs., 3 figs., 10 tabs.
- OSTI ID:
- 621354
- Report Number(s):
- CONF-960273-; TRN: 98:002183-0014
- Resource Relation:
- Conference: Air and Waste Management Association (AWMA) specialty conference on emerging solutions to VOC and air toxics control, Clearwater Beach, FL (United States), 28 Feb - 1 Mar 1996; Other Information: PBD: 1996; Related Information: Is Part Of Emerging solutions to VOC and air toxics control; PB: 457 p.
- Country of Publication:
- United States
- Language:
- English
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