A LOW-TEMPERATURE, MOVING BED CATALYTIC REACTOR FOR CONTROL OF NOX EMISSIONS FROM COAL COMBUSTION

摘要

An apparatus comprising: a combustion chamber for combustion of a fuel, which during operation generates a flue gas that may contain a quantity of NO that it is desired to remove; and a SCR reactor for reducing at least a portion of NO present in the flue gas, said SCR reactor comprising a moving-bed reactor that comprises first and second opposed boundaries spaced apart from one another to thereby define a substantially vertical catalyst-bed pathway therebetween, said first and second opposed boundaries comprising, respectively, a first louver stack and a second louver stack, each said louver stack comprising a series of vertically-spaced first or second louvers, respectively, said first and second louvers in the respective first and second louver stacks being inclined away from one another, said catalyst-bed pathway being defined between said first and second louver stacks; wherein flue gas travelling through said moving-bed reactor follows a path between the vertically-spaced first louvers, through the bed pathway, and then exiting between the vertically-spaced second louvers. The apparatus is a low-temperature, moving bed catalytic reactor which is suitable for control of NOx emissions from coal combustion.