Studies of in-situ calcium based sorbents in advanced pressurized coal conversion systems. Final report, June 1991--October 1994

摘要

The overall objective of this project was to obtain experimental data on the reactions of calcium-based sorbents in both air-blown coal gasification systems and second generation fluid bed coal combustion systems (partial gasification) as well as stabilization of the spent sorbent produced. The project consisted of six tasks: Tasks 1 and 2 dealt mostly with project-related activities and preparation of test equipment, Task 3 -- study on sulfidation of calcium-based sorbents, Task 4 -- kinetic studies on calcium-catalyzed carbon gasification reactions, and Task 5 -- oxidation of CaS present in LASHs and DASHs (mixtures of coal ash and limestone or dolomite respectively) to CaSO(sub 4) and absorption of SO(sub 2) on various solids, and Task 6 -- economic evaluation of the most promising CaS oxidation method developed under this program. Experimental studies were conducted primarily to address Task 5 issues, and are discussed in this report.