Method for controlling solvent emissions from a carbon capture unit

Abstract

A method and a system for controlling solvent emissions from a carbon capture unit includes passing solvent through a CO2 absorber and a flue gas effluent stream through the CO2 absorber and in a counter-current direction to the solvent passing through the CO2 absorber. Subsequently, a gas-phase effluent stream from the CO2 absorber is passed through an acid wash and the water wash to reduce an emission of solvent within a gas-phase effluent stream from the acid wash and a gas-phase effluent stream from the water wash. A control logic unit receives and processes a signal from a gas-phase analyzer and a pH sensor and passes a stream of acid wash and acid to the acid wash, and a stream of water wash to the water wash, via respective control valves.

Dependencies are inferred from the claim text.