Systems and methods for removing sulfur species from hot gases from coal

摘要

The present invention relates to a hot gas purification system for the removal of alkali and sulfur dusts from fuel gas produced in a vaporizer, in particular a vaporized coal, in a unitary fused gas turbine vaporizer power plant. Calcium-based sulfur absorbers and alkali absorbers are injected directly into the fuel gas and, together with the absorbers used, are regenerated in high efficiency and high temperature ceramic barrier filters. The fuel gas is then further desulfurized in an abrasive desulfurizer fed with a copper-based sulfur absorbent. The copper-based absorbents used are regenerated in generators with fluidized layers in the generator. The regenerated sorbents are returned to the abrasive desulfurizer and the sulfur dioxide produced by the regenerates causes the used or unused sulfur sorbents to flow from the filter into the oxidizer, whereby sulfur dioxide is trapped and the used sulfur sorbents are changed to a more stable form for treatment. do.