SYSTEM AND METHOD FOR REMOVING CONTAMINANTS FROM A CONTAMINATED GAS STREAM

摘要

A system for removing contaminants from a contaminated gas stream using a liquid absorbent, the system having a first and a second separation unit. The first separation unit includes a first separator having an inlet for a contaminated gas stream to be separated, a first outlet for separated gas and a second outlet for separated liquid absorbent; a rising conduit for transporting the contaminated gas stream to the inlet of the first separator; a conduit for removing the separated gas at the first outlet of the first separator; and a conduit for removing separated liquid absorbent at the second outlet of the first separator. The second separation unit includes a second separator having an inlet for a stream to be separated, a first outlet for separated gas and a second outlet for separated liquid absorbent; a rising conduit for transporting a contaminated stream to the inlet of the second separator; a conduit for removing separated gas at the first outlet of the second separator; and a descending conduit for removing separated liquid absorbent at the second outlet of the second separator. The descending conduit of the second separation unit is fluidly connected to the rising conduit of the first separation unit and the height of the descending conduit of the second separation unit is selected such that during use the hydrostatic force in the descending conduit of the second separation unit can induce the liquid absorbent in the rising conduit of the first separation unit to flow to the inlet of the first separator.