Cleaning waste gases - with simultaneous heat recovery by cooling to low temp.

摘要

To recover heat when cleaning waste gases, the gases are cooled to such low temps. and in the presence of water that N oxides and S oxides, excluding CO and CO2 form drops at the cooler surface. The acidic drops, which fall from the surface of the cooler, are collected in a vessel filled with a neutralising substance. Method saves 40-50% energy and provides the heat usually produced by several power stations. Reduces environmental pollution.