Process for purification of sulphur-containing exhaust gas

Details Process for purification of sulphur-containing exhaust gas Process for purification of sulphur-containing exhaust gas

2007-03-01

2009-08-04

Vanoy, Timothy C (Department: 1793)

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Mixture is exhaust from internal-combustion engine

C423S213500, C423S213700, C423S245300, C423S215500, C423S247000, C060S274000, C060S282000, C060S285000, C060S289000, C060S299000, C060S302000

Reexamination Certificate

active

07569197

ABSTRACT:
The invention provides a process and system for purification of an exhaust gas stream from a combustion engine containing hydrocarbons, soot, carbon monoxide and sulphur dioxide. The process comprises the steps of oxidising the hydrocarbons and part of the soot in a first reactor in the presence of a first catalyst active in oxidising hydrocarbons and soot without oxidising sulphur dioxide and forming a partly purified exhaust gas stream, of cooling of the partly purified exhaust gas stream, of converting the carbon monoxide of the partly purified exhaust gas stream in a second reactor in presence of a second catalyst active in oxidising carbon monoxide without oxidising sulphur dioxide and of withdrawing a purified exhaust gas stream.

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