Using high temperature baghouses to enhance desulfurization following economizer sorbent injection

摘要

In order to explore the potential of using high temperature baghouses to enhance SO_2 removal following upstream sorbent injection, an integrated two-stage reactor system has been built. It consists of an injection stage and a filtration stage. Distinct from one-stage fixed-bed reactors, sorbent particles in this system are initially converted under controlled injection conditions before entering the filtration reactor chamber. By the aid of the system, several unique features regarding the gas-solid reactions in the baghouse after economizer zone sorbent injection have been revealed. Results have shown that the appropriate usage of a high temperature baghouse may substantially enhance the performance of the process. The further SO_2 removal in the baghouse is comprehensively affected by both the condiitons in the injection zone and those in the baghouse.