Flue Gas Desulfurization for Acid Rain Control

Abstract

This chapter is a reprint of a literature review prepared for the Ohio Coal Development Office by the Ohio Coal Research Consortium in 1990. It represents an assessment of the state of the art in flue gas desulfurization technologies at that time. It also served to motivate the work of the consortium starting in 1991, the results of which are presented in the following chapters.The discussion begins with a basic review of different technologies which are distinguished first by the amount of moisture in the sorbent feed and product, and second by the temperature range for the sorbent injection. The high temperature range corresponds to furnace injection; the medium temperature range corresponds to economizer injection; and the low temperature range corresponds to any system in place after the air heater. In each case, both process chemistry and contacting technologies are discussed. Low temperature technologies are further divided into duct injection, spray drying, capture in particulate control devices, and other special devices. The chapter concludes with a discussion of the fundamentals of sorbent and sorbent additive chemistry and the fluid mechanics, mass, and heat transfer.

The use of artificial neural network (ANN) in dry flue gas desulphurization modelling: Levenberg–Marquardt (LM) and Bayesian regularization (BR) algorithm comparison

“…Dry flue gas desulphurization (DFGD) is an alternative technology developed to offset the high costs associated with wet or semi‐dry flue gas desulphurization (FGD) technologies. [ 1 ] A reduction of SO 2 emissions to 200 SO 2 /m 3 , especially in coal power plants, has propelled research and development on techniques for improving sulphur capture efficiency and sorbent utilization. [ 2,3 ] Comprehending the operating environment of an FGD unit is key to exploiting its effectiveness in emission compliance at a sustainable cost.…”