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REACTION KINETICS OF CA-BASED SORBENTS WITH HC1
Citation:
Gullett, B., W. Jozewicz, AND L. Stefanski. REACTION KINETICS OF CA-BASED SORBENTS WITH HC1. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-92/411.
Description:
The paper gives results of an investigation of the kinetics of the reaction between CaO and HC1 under conditions that minimize bulk mass transfer and pore diffusion limitations. eactivity data from 0.2 to 1 s exposure to 5000 ppm HC1 in a fixed-bed reactor were analyzed by a shrinking core model of diffusion and chemical reaction control, either singly or in combination. etween 150 and 350 C, the reaction is controlled by gaseous diffusion through the developing product layer. he apparent activation energy is about 28.1 kJ/mol (6.7 kcal/mol), and the reaction is first order with respect to HC1 concentration. eactivity is a minor function of the measured particle size and surface area, likely due to the agglomerative nature of the individual grains that comprise the particle structure and complicate the interpretation of these measured values. xtrapolation of these results to the high temperature, furnace sorbent injection process provides preliminary agreement with pilot scale tests.