US 11,667,794 B2
Methods and systems for particulate matter removal from a process exhaust gas stream
Russell Webb, Kingwood, TX (US); Rodney Taylor, Wichita Falls, TX (US); Daniel Horn, Humble, TX (US); Ralf Bergsträsser, Elsdorf (DE); Donnie Loubiere, Humble, TX (US); and Kay Schmidt, Cologne (DE)
Assigned to ORION ENGINEERED CARBONS GMBH, Frankfurt am Main (DE)
Filed by ORION ENGINEERED CARBONS GMBH, Frankfurt am Main (DE)
Filed on May 18, 2020, as Appl. No. 16/876,917.
Application 16/876,917 is a division of application No. 15/752,331, granted, now 10,870,762, previously published as PCT/EP2016/069057, filed on Aug. 10, 2016.
Claims priority of provisional application 62/205,146, filed on Aug. 14, 2015.
Prior Publication US 2020/0277501 A1, Sep. 3, 2020
Int. Cl. B01J 8/00 (2006.01); C09C 1/50 (2006.01); B01D 53/50 (2006.01); B01D 53/86 (2006.01); C09C 1/48 (2006.01); B01J 8/02 (2006.01)
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
OG exemplary drawing
 
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.