Desulfurization of Hot Coal Gas by P. W. Sage (auth.), Aysel T. Atimtay, Douglas P. Harrison

By P. W. Sage (auth.), Aysel T. Atimtay, Douglas P. Harrison (eds.)

Economic and environmental necessities for complicated energy producing platforms call for the removing of corrosive and different sulfurous compounds from sizzling coal gasoline. After a short account of the realm strength assets and an summary of unpolluted coal applied sciences, a assessment of regenerable steel oxide sorbents for cleansing the recent fuel is equipped. Zinc oxide, copper oxide, calcium oxide, manganese oxide dependent in addition to supported and combined steel oxide sorbents are taken care of. functionality research of those sorbents, results of varied parameters at the desulfurization potency, kinetics of sulfidation and regeneration reactions, sulfiding and regeneration mechanisms are mentioned. chapters current fresh ends up in the direct construction of elemental sulfur from regeneration or SO2-rich gases.

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Solid residues from the gasifier, comprising mineral matter, char and sulphided sorbent residue occur as two main sll·eams, viz: as a coarse solid removed from the base of the gasifier and as fmes material elutriated from the gasifier and trapped in the cyclone and ceramic filter Wlits. Both solid residue streams are depressurised, cooled and bumt in a CFBC boiler, thereby raising steam which is used to generate further power in a steam turbine. The ABGC is shown diagranunatically in Figure 5. 1 Historical PersJlective of ABGC DeveloJlmcnt Blitish Coal has a long standing association with the development of Clean Coal Power Generation Teclmology.

Start-up of the Wakamatsu PFBC Plant', Japan PFBC Workshop, 1994. 7. Nordin S and Dahe A. 'Experience for the First Year of Commercial Operation of the Vaertan PFBC Plant'. VGB Kraftwerkstechnik, 73, 1993. 8. 'Tidd concludes four year PFBC test programme', Clean Coal Today (US DOE) Summer 1996. 9. Goto H. 'Operation Experience for the 71 MW Wakamatsu PFBC Demonstration Plant'. 13th FBC Conference, Orlando, USA, May 1995. 10. Dawes SG 'Reflections on the History and Achievements of the Grimethorpe PFBC Ex-perimental Facility from Conception to Demolition 1970-1993'.

Limestone, to promote ash removal from the gasifier, or else, the gasifier must be operated in a dry-ash mode. Particle size distribution. Operation of coal particles with the flowing gas within the gasifier is highly sensitive to coal particle size due to solid/gas flow considerations. For example, fluidization of coal particles requires a relatively narrow size distribution and even gas velocity distribution across the gasifier. Permeation of gas through a fixed/moving-bed gasifier is sensitive to fine particle carryover and gas or solid maldistribution in the bed.

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