CO2 CAPTURE OPTIONS FOR AN EXISTING COAL FIRED POWER PLANT: O2/CO2 RECYCLE COMBUSTION vs. AMINE SCRUBBING
| Citations: | 5 - 0 self |
BibTeX
@MISC{Singh_co2capture,
author = {D. J. Singh and E. Croiset},
title = {CO2 CAPTURE OPTIONS FOR AN EXISTING COAL FIRED POWER PLANT: O2/CO2 RECYCLE COMBUSTION vs. AMINE SCRUBBING},
year = {}
}
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Abstract
The existing fleet of modern pulverized coal fired power plants represents an opportunity to achieve significant greenhouse gas (GHG) emissions in the coming years providing efficient and economical CO2 capture technologies are available for retrofit. One option is to separate CO2 from the products of combustion using conventional approaches such as amine scrubbing. An emerging alternate, commonly known as O2/CO2 recycle combustion, involves burning the coal with oxygen in an atmosphere of recycled flue gas. Both approaches can be retrofitted to existing units, however they consume significant amounts of energy to capture, purify and compress the CO2 for sequestration. This paper compares the performance of the two approaches using a commercial process simulation package (HYSYS). The goal of this particular study is to preserve the net power output of the original plant. To accomplish this objective, the internal energy needs of each capture process are met by firing natural gas. The emissions produced as a by-product of supplying these additional energy needs are considered in the determination of the resulting overall plant emissions. The energy requirements needed to satisfy each approach are compared, pointing to the need to develop different energy integration strategies for each process. Finally, the goals of future research work sponsored by the CANMET CO2 Consortium in this area are described.
Keyphrases
amine scrubbing o2 co2 recycle combustion v canmet co2 consortium conventional approach particular study recycled flue gas economical co2 capture technology different energy integration strategy significant greenhouse gas capture process natural gas original plant coal fired power plant o2 co2 recycle combustion net power output commercial process simulation package additional energy need significant amount internal energy need future research work overall plant emission energy requirement
