Opportunities for 2nd & 3rd Generation CO2 Capture Technologies and Energy Integration in Natural Gas Processing for Use in EOR

Abstract

Abstract A high level methodology was developed for CO2 capture project in natural gas processing. This work highlights the potential CO2 emission sources in natural gas processing plant, such as from gas turbines, heaters, boiler and effluent gas of Sulphur Recovery tail gas treatment units. A preliminary evaluation of different CO2 capture technologies was conducted mainly post-combustion and oxyfiring, based on the CO2 emission sources. It was identified that for gas turbines, the post-combustion capture process together with exhaust gas recycling shows potential for application. For utility boilers and heaters both postcombustion and oxyfiring technology can be applied. CO2 capture from effluent gas from tail gas treatment unit can be done by both post-combustion and oxyfiring. A brief overview of 2nd and 3rd generation advanced CO2 post-combustion capture technologies is given. This work also highlights the potential to use available high and low grade waste heat available in natural gas processing plant for the CO2 capture process. Moreover, the impact of high ambient conditions on the CO2 capture process, mainly for amine based absorption process is highlighted. This work identifies further developments and evaluations required for current and 2nd and 3rd generation CO2 capture technologies.