| 摘要 |
Improvements in the known steam-iron coal gasification process. Coal and iron particles are cofluidized in a gas producing zone and agglomeration of the particles is prevented by including at least 30% and, as the temperature is raised within the operable range, 60% or even 90% or more iron in the mix. The FeO produced as a by-product is transferred to a regeneration zone where, preferably, one of two iron oxide reduction processes are utilized. One regeneration process comprises reacting the FeO in a dense fluidized bed with a mixture of CO and CO2. The other process involves cofluidizing FeO and CaO with a CO-CO2 mixture to produce iron and calcium compounds which may be separated from the iron prior to its introduction back into the gas producing zone.
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