Method for removing contaminants from a gas stream
AssigneeBASF SE
InventorsBernd Sachweh, Michael-Dieter Ulbrich, Wolf-Steffen Weissker
Life of this patent
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Abstract
The invention relates to methods for removing gaseous contaminants and aerosols from a vapor-saturated gas stream, in which method a gas stream containing a) at least one gaseous contaminant which is soluble in a scrubbing liquid, with or without salt formation, and b) at least one aerosol with a particle size from 0.01 to 10 μm, is brought into contact, in a scrubber column, with a scrubbing liquid, the temperature of which is lower by at least 2° C. than the temperature of the gas stream, resulting in the formation of a vapor phase, the degree of saturation S of which is greater than 1, and in the removal of the gaseous and particulate contaminants from the gas stream.
Claims14
A method for removing gaseous contaminants and particulate contaminants (aerosols) from a vapor-saturated gas stream, in which method a gas stream containing
- a) at least one gaseous contaminant which is soluble in a scrubbing liquid, with or without salt formation, and
- b) at least one particulate contaminant (aerosol) with a particle size from 0.01 to 10 μm,
- having a flow rate of at least 0.5 m/s and a temperature from 30° C. to 100° C. when it enters a scrubber column which has an internal surface area of from 50 to 1000 m2/m3, is brought into contact, if initially not being vapor-saturated following prior saturation with vapor, with a scrubbing liquid which has a feed parameter Z to the scrubber column and the temperature of which is lower by at least 2° C. than the temperature of the gas stream, resulting in the formation of a vapor phase, the degree of saturation S of which is greater than 1, and in the removal of the gaseous and particulate contaminants from the gas stream.
Dependencies are inferred from the claim text.