PROCESS AND A DEVICE FOR FLUE GAS DESULPHURIZATION

摘要

In a process and a device for flue gas desulphurization using the following reaction: the hydrobromic acid thus formed is split up by electrolysis into hydrogen and bromine. The sulphuric acid produced is brought to a saleable concentration rate of at least 90% in two successive concentrators the post-concentrator being fed with high temperature flue gases which are withdrawn immediately behind the economiser of the power plant. A partial flow of the flue gases to be cleaned traverses a heat exchanger, in which the cleaned flue gases are reheated to a temperature level which is compatible with the chimney requirements.