CPC C09C 1/50 (2013.01) [B01D 53/502 (2013.01); B01D 53/869 (2013.01); B01D 53/8625 (2013.01); B01J 8/00 (2013.01); B01J 8/02 (2013.01); C09C 1/48 (2013.01)] | 7 Claims |
1. A system for reducing particulate matter in an exhaust gas from a carbon black process module and for treating the exhaust gas using a wet sulfuric acid process, the exhaust gas comprising one or more combustible components, the system comprising:
a combustion device configured to receive the exhaust gas and combust the exhaust gas to produce a combusted exhaust gas comprising particulate matter and sulfur dioxide;
a reactor comprising an SO2 conversion catalyst, wherein the reactor is configured to receive the combusted exhaust gas and oxidize at least a portion of the sulfur dioxide in the combusted exhaust gas to produce a sulfur trioxide-rich exhaust gas, wherein the reactor is further configured to react the sulfur trioxide-rich exhaust gas with water to produce a sulfuric acid-rich exhaust gas;
a condenser configured to receive the sulfuric acid-rich exhaust gas and condense the sulfuric acid from the sulfuric acid-rich exhaust gas to produce a purified exhaust gas and condensed sulfuric acid; and
a particulate matter removal device comprising a guard bed, installed prior to the SO2 conversion catalyst as a separate vessel connected to the reactor or a portion or stage of the reactor, wherein the particulate matter removal device is configured to receive the combusted exhaust gas and catalytically oxidize at least a portion of the particulate matter from the combusted exhaust gas.
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