Apparatus and method for treating exhaust gas
AssigneeArcelormittal Investigacion Y Desarrollo, S.L.
InventorNaiyang Ma
Life of this patent
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Abstract
Presented is a method and apparatus for treating an exhaust gas. A series of filters and conditioning units are used to separate and extract various substances from the exhaust gas, typically originating from an industrial process. In an exemplary embodiment, a cyclone filter, a ceramic filter, a baghouse filter, and a pair of gas conditioners are used to initially separate and extract iron-rich dust from an exhaust gas and then extract zinc from the gas.
Claims21
An apparatus for the treatment of exhaust gases from an industrial process, comprising:
- a first gas conditioner for receiving and conditioning an exhaust gas and creating a first conditioned gas;
- a cyclone filter in fluid communication with and downstream of said first gas conditioner to remove dust from the first conditioned gas;
- a ceramic filter in fluid communication with and downstream of said cyclone filter to remove additional dust from the exhaust gas;
- a second gas conditioner in fluid communication with said ceramic filter for receiving and further conditioning the exhaust gas, creating a twice conditioned exhaust gas;
- and,
- a baghouse filter for receiving and further conditioning said exhaust gas downstream of said second gas conditioner remove a substance from the twice conditioned exhaust gas.
An apparatus for the treatment of exhaust gases comprising:
- a first gas conditioner for initially conditioning an exhaust gas comprising dust and zinc, said first gas conditioner comprising a first water spreader;
- a cyclone filter in fluid communication with and downstream of said first water spreader, said cyclone filter removing dust from the exhaust gas without causing condensation of the zinc;
- a ceramic filter in fluid communication with and downstream of said cyclone filter, said ceramic filter removing dust from the exhaust gas without causing condensation of the zinc;
- a second gas conditioner in fluid communication with and for receiving and further conditioning said exhaust gas downstream from said ceramic filter, said second gas conditioner further comprising a second water spreader;
- a baghouse filter in fluid communication with and downstream of said second water spreader, said baghouse filter removing zinc from the exhaust gas.
A method of treating an exhaust gas comprising:
- introducing the exhaust gas into a first conditioning unit and conditioning the exhaust gas to provide a conditioned exhaust gas;
- introducing the conditioned exhaust gas to a cyclone filter in fluid communication with and located downstream of the first conditioning unit;
- introducing the conditioned exhaust gas to a ceramic filter in fluid communication with and located downstream of the cyclone filter;
- introducing the conditioned exhaust gas into a second conditioning unit in fluid communication with and downstream of the ceramic filter and conditioning the conditioned exhaust gas for a second time;
- introducing the twice conditioned exhaust gas to a baghouse filter in fluid communication with and downstream of the second conditioning unit.
Dependencies are inferred from the claim text.