A CO2 removal system, using aqueous solutions of amines, is applied to a Semi-Closed Gas Turbine/Combined Cycle (SCGT/CC) power plant. The SCGT/CC is interesting because of the possibility of achieving low emissions at the stack, with a decreased overall flow rate, lower NOx concentration and an increased CO2 concentration (over 15 % in volume), which facilitates the removal treatment. Several compositions of the absorbing solution have been investigated, by means of simulations with ASPEN PLUS. A 18 % DEA + 12 % MDEA composition resulted the most convenient in terms of flow rate and energy requirement for the stripping. A cost analysis of the removal plant allows to estimate additional costs for CO2 removal with respect to conventional power plants.
Absorption of CO2 with amines in a semi-closed GT cycle: Plant Performance and Operating Costs / A. CORTI; L. LOMBARDI; G. MANFRIDA. - STAMPA. - (1998), pp. 1-6. (Intervento presentato al convegno ASME IGTI 43rd Gas Turbine and Aeroengine Congress and Exhibition tenutosi a Stockolm, Sweden nel June 1998).
Absorption of CO2 with amines in a semi-closed GT cycle: Plant Performance and Operating Costs
CORTI, ANDREA;LOMBARDI, LIDIA;MANFRIDA, GIAMPAOLO
1998
Abstract
A CO2 removal system, using aqueous solutions of amines, is applied to a Semi-Closed Gas Turbine/Combined Cycle (SCGT/CC) power plant. The SCGT/CC is interesting because of the possibility of achieving low emissions at the stack, with a decreased overall flow rate, lower NOx concentration and an increased CO2 concentration (over 15 % in volume), which facilitates the removal treatment. Several compositions of the absorbing solution have been investigated, by means of simulations with ASPEN PLUS. A 18 % DEA + 12 % MDEA composition resulted the most convenient in terms of flow rate and energy requirement for the stripping. A cost analysis of the removal plant allows to estimate additional costs for CO2 removal with respect to conventional power plants.
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