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.
Claims23
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 conditioned exhaust gas;
- a cyclone filter in fluid communication with and downstream of said first gas conditioner to remove dust from the conditioned exhaust gas;
- a ceramic filter in fluid communication with and downstream of said cyclone filter to remove additional dust from the conditioned exhaust gas;
- a second gas conditioner in fluid communication with and downstream of said ceramic filter for receiving and further conditioning the conditioned exhaust gas, creating a further conditioned exhaust gas;
- and
- a filter downstream of said second gas conditioner for receiving and filtering the further conditioned exhaust gas to remove a substance from the further conditioned exhaust gas.
2-21. (canceled)
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 conditioned exhaust gas;
- a first filter in fluid communication with and downstream of said first gas conditioner to remove dust from the conditioned exhaust gas;
- a ceramic second filter in fluid communication with and downstream of said first filter to remove additional dust from the conditioned exhaust gas;
- a second gas conditioner in fluid communication with and downstream of said ceramic second filter for receiving and further conditioning the conditioned exhaust gas, creating a further conditioned exhaust gas;
- and
- a third filter downstream of said second gas conditioner for receiving and filtering the further conditioned exhaust gas to remove a substance from the further conditioned exhaust gas.
An apparatus for the treatment of exhaust gases from an industrial process, comprising:
- a first gas conditioner for receiving and conditioning an exhaust gas containing iron-rich dust and zinc and creating a conditioned exhaust gas;
- a first filter in fluid communication with and downstream of said first gas conditioner to remove iron-rich dust from the conditioned exhaust gas, wherein the iron-rich dust removed by the first filter is substantially free of the zinc;
- a ceramic second filter in fluid communication with and downstream of said first filter to remove additional iron-rich dust from the conditioned exhaust gas, wherein the additional iron-rich dust removed by the ceramic second filter is substantially free of the zinc;
- a second gas conditioner in fluid communication with and downstream of said ceramic second filter for receiving and further conditioning the conditioned exhaust gas, creating a further conditioned exhaust gas;
- and
- a third filter downstream of said second gas conditioner for receiving and filtering the further conditioned exhaust gas to remove the zinc from the further conditioned exhaust gas.
Dependencies are inferred from the claim text.