NOx and SO2 emissions from O2/CO2 recycle coal combustion

✍ Scribed by E. Croiset; K.V. Thambimuthu

• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 94 KB
• Volume: 80
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/s0016-2361(00)00197-6

✦ Synopsis

Capturing CO 2 from conventional coal-®red power plant is very costly because of its relatively dilute concentration in the ¯ue gas. One option to reduce the cost of gas separation is to increase CO 2 concentration in the ¯ue gas by eliminating nitrogen before combustion and by recycling part of the ¯ue 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 ¯ue 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.