Thermal processing of unused waste products; The Sasol Perspective
- Sastech R&D Division, Sasolburg (Saudi Arabia)
- Sastech Technology Transfer Division, Johannesburg (Saudi Arabia)
The Sasol group of companies gasify approximately 28 x 10{sup 6} metric tons of coal in their 97 Lurgi fixed bed gasifiers per annum. The syngas produced is used mainly in their Fischer-Tropsch plants for the production of transport fuels as well as a slate of other chemicals. In a complex operation such as Sasol, various sources of unutilized products or waste exist. Tars produced during gasification contain a substantial amount of solid material, essentially fine char and ash. Through various steps of sedimentation and filtration most of the tar is recovered as a clear liquid ready for further work-up. However an amount of {open_quotes}dusty tar{close_quotes}, high in solids (MIQ) is produced. In the operation of the Synthol (Fischer Tropsch) reactors, fine catalyst is carried over in the liquid product. This is also concentrated to form a waste product high in finely divided catalyst. Like any other large petrochemical facility from time to time waste from a number of sources is produced down-stream. This paper describes the waste management for the Sasol process.
- OSTI ID:
- 433255
- Report Number(s):
- CONF-950402--
- Journal Information:
- Preprints of Papers, American Chemical Society, Division of Fuel Chemistry, Journal Name: Preprints of Papers, American Chemical Society, Division of Fuel Chemistry Journal Issue: 1 Vol. 40; ISSN 0569-3772; ISSN ACFPAI
- Country of Publication:
- United States
- Language:
- English
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