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1. (WO2013144887) A METHOD FOR CONTROLLING SOLVENT EMISSIONS FROM A CARBON CAPTURE UNIT

Pub. No.:    WO/2013/144887    International Application No.:    PCT/IB2013/052472
Publication Date: Fri Oct 04 01:59:59 CEST 2013 International Filing Date: Thu Mar 28 00:59:59 CET 2013
IPC: B01D 53/14
B01D 53/62
Applicants: ALSTOM TECHNOLOGY LTD
Inventors: HANDAGAMA, Nareshkumar Bernard
BABURAO, Barath
NAIK, Jayesh
Title: A 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 CO 2 absorber and a flue gas effluent stream through the CO 2 absorber and in a counter-current direction to the solvent passing through the CO 2 absorber. Subsequently, a gas-phase effluent stream from the CO 2 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 p H 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.