Sorbent injection testing with follow-up solid-gas mixture on mercury capture in lab-scale facility

A laboratory-scale demonstration facility on sorbent injection was setup to evaluate sorbent behavior in Hg capture efficiency including two type woodceramic sorbents and two types of IGCC chars. Among them, woodceramic chicken waste sorbent has been used in the preliminary testing in the power plant and showed some favorable results in real flue gas atmospheres. The testing results of four sorbent injections in laboratory-scale testing facility showed that at 20°C and 0.13 sec, the maximum Hg removal efficiency of Eastern IGCC char could be ≤ 78% using the S/Hg injection ratio of 12000:1. This is an abstract of a paper presented at the 228th ACS National Meeting (Philadelphia, PA, 8/22-26/2004).