Method for treating exhaust gas
AssigneeArcelormittal Investigacion Y Desarrollo
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.
Claims20
A method of treating and conditioning an exhaust gas, comprising:
- conditioning an exhaust gas containing iron-rich dust in a first conditioning unit to provide conditioned exhaust gas;
- filtering the conditioned exhaust gas in a cyclone filter to provide filtered exhaust gas;
- further filtering the filtered exhaust gas with a ceramic filter located downstream from the cyclone filter to provide further filtered exhaust gas;
- further conditioning the further filtered exhaust gas in a second conditioning unit to provide further conditioned exhaust gas;
- and
- still further filtering the further conditioned exhaust gas.
A method of treating and conditioning an exhaust gas, comprising:
- conditioning an exhaust gas containing iron-rich dust and zinc in a first conditioning unit to provide conditioned exhaust gas;
- filtering the conditioned exhaust gas in a cyclone filter to separate a first portion of the iron-rich dust from the conditioned exhaust gas and thereby provide a filtered exhaust gas;
- further filtering the filtered exhaust gas with a ceramic filter located downstream from the cyclone filter to separate a second portion of the iron-rich dust from the filtered exhaust gas and thereby provide a further filtered exhaust gas;
- further conditioning the further filtered exhaust gas in a second conditioning unit to provide further conditioned exhaust gas;
- and
- still further filtering the further conditioned exhaust gas to separate the zinc from the further conditioned exhaust gas.
A method of treating and conditioning an exhaust gas, comprising:
- conditioning an exhaust gas containing iron-rich dust and zinc in a first conditioning unit to provide conditioned exhaust gas;
- filtering the conditioned exhaust gas in a cyclone filter to separate a first portion of the iron-rich dust from the conditioned exhaust gas without condensing the zinc and thereby provide a filtered exhaust gas;
- further filtering the filtered exhaust gas with a ceramic filter located downstream from the cyclone filter to separate a second portion of the iron-rich dust without condensing the zinc from the filtered exhaust gas and thereby provide a further filtered exhaust gas;
- further conditioning the further filtered exhaust gas in a second conditioning unit to provide further conditioned exhaust gas;
- and
- still further filtering the further conditioned exhaust gas to separate the zinc from the further conditioned exhaust gas.
Dependencies are inferred from the claim text.