Regenerative desulphurisation in fluidized bed combustion of coal
A new CaO on gamma-Al(2)O(3) sorbent has been developed as a more economic sorbent for regenerative desulphurisation. Its properties ensure relatively fast sulphation, selective and fast regeneration and good attrition resistance. A model for segregation in slugging fluidised beds is proposed, from which can be calculated the conditions required either to avoid segregation or to provoke it. Engineering sulphur retention (SURE) models are built on the assumption of ideal mixing and on models for sorbent sulphation. The feasibility of the sulphur retention with sol-gel sorbent is demonstrated technologically in a pilot scale pressurised FBC test. Its economic feasibility is tested using two different economic models, but the advantages are dependent on whether or not spent sorbent contaminated with coal ash is regarded as chemically hazardous waste.
Bibliographic Reference: EUR 14052 EN (1992) 107 pp., FS, ECU 12
ISBN: ISBN 92-826-3981-9
Record Number: 199210579 / Last updated on: 1994-12-02
Original language: en
Available languages: en