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Abstract

The Mark-13A process is a new flue gas desulphurization process, producing sulphuric acid and hydrogen. Both products are valuable chemicals which can be marketed and re-utilized. The process was developed at the JRC Ispra. The process involves four major process units: + the sulphuric acid concentrator + the sulphur dioxide removal reactor + the electrolyser + the final scrubber In the SO-2 removal reactor the flue gas is contacted with an aqueous solution of HBr and H-2SO-4 containing a small amount of bromine. The sulphuric acid and hydrogen bromide formed stay in the solution and the HBr is subsequently reconverted into bromine by electrolysis. In the sulphuric acid concentrator a part of the acid mixture is brought in contact countercurrently with the hot incoming flue gases where water and HBr are removed final scrubber traces of hydrogen bromide are removed from the treated flue gas. In the process all reactants (bromine and water) are generated inside the process so that the (costly) introduction of reactants and the disposal of solid products and waste water is completely avoided. Another advantage of the process is that the reactant and product flow rates are small compared with the nowadays mostly used limestone scrubbing processes.

Additional information

Authors: VAN VELZEN D, JRC ISPRA ESTAB. (ITALY);LANGENKAMP H JRC ISPRA ESTAB. (ITALY), JRC ISPRA ESTAB. (ITALY)
Bibliographic Reference: COLLOQUIUM ON CHEMICAL REACTION ENGINEERING ON FLUE GAS DESULPHURIZATION AND DENITRATION, BAD SODEN (GERMANY), MARCH 6-7, 1985 WRITE TO CEC LUXEMBOURG, DG XIII/A2, POB 1907 MENTIONING PAPER E 31950 ORA
Availability: Can be ordered online
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