Post absorber scrubbing of so3
AssigneeALSTOM Technology Ltd
InventorStephen Alan Bedell
Life of this patent
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Abstract
A flue gas treatment system includes a CO2 absorber having an inlet for receiving a SO3 aerosol containing gas in the CO2 absorber. An amine solvent is supplied to the CO2 absorber. The CO2 absorber has a high temperature region and a lower temperature region. The high temperature region is configured to create an amine vapor and the lower temperature region is configured to cause the amine vapor to condense on the SO3 aerosol creating SO3/amine droplets. A SO3 aerosol removal device is positioned downstream of the CO2 absorber for removing the SO3/amine droplets from the gas.
Claims20
A gas treatment system comprising:
- a CO2 absorber having an inlet for receiving a SO3 aerosol containing gas in the CO2 absorber, an amine solvent supplied to the CO2 absorber the CO2 absorber having a high temperature region and a lower temperature region, the high temperature region being configured to create an amine vapor and the lower temperature region being configured to cause the amine vapor to condense on the SO3 aerosol creating SO3/amine droplets;
- and
- a SO3 aerosol removal device positioned downstream of the CO2 absorber for removing the SO3/amine droplets from the gas.
A method for treatment of gas comprising:
- providing a CO2 absorber/regenerator, with the absorber having a high temperature region and a lower temperature region;
- providing a SO3 aerosol removal device positioned downstream of the CO2 absorber;
- supplying an amine to the CO2 absorber;
- supplying a SO3 aerosol and CO2 containing gas to the absorber;
- reacting the CO2 with the amine in the CO2 absorber;
- generating an amine vapor in the high temperature region;
- condensing the amine vapor on the SO3 aerosol in the low temperature region, thereby creating SO3/amine droplets;
- and
- removing the SO3/amine droplets from the gas in the SO3 aerosol removal device.
Dependencies are inferred from the claim text.