Abstract
Abstract Capturing CO 2 from conventional coal-fired power plant is very costly because of its relatively dilute concentration in the flue gas. One option to reduce the cost of gas separation is to increase CO 2 concentration in the flue gas by eliminating nitrogen before combustion and by recycling part of the flue gas. This scheme is known as O 2 /CO 2 recycle combustion. The present work focuses on the implications of O 2 /CO 2 recycle combustion on NO x and SO 2 emissions. Two main types of experiments were performed: combustion in once-through O 2 /CO 2 mixtures and experiments with recycled flue gas. Combustion in air was performed as a base case. For each experiment, NO x and SO 2 were measured at several locations along the reactor and the experimental results are presented in this paper.
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