![Emission characteristics of coal combustion in different O"2/N"2, O"2/CO"2 and O"2/RFG atmosphere [An article from: Journal of Hazardous Materials]](https://www.ebooknetworking.net/books/B00/0PD/bigB000PDYJOA.jpg)
Emission characteristics of coal combustion in different O"2/N"2, O"2/CO"2 and O"2/RFG atmosphere [An article from: Journal of Hazardous Materials]
Book Details
Author(s)J.C. Chen, Z.S. Liu, J.S. Huang
PublisherElsevier
ISBN / ASINB000PDYJOA
ISBN-13978B000PDYJO2
MarketplaceFrance 🇫🇷
Description
This digital document is a journal article from Journal of Hazardous Materials, published by Elsevier in 2007. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
This study investigates the emission characteristics of CO"2, SO"2 and NOx in the flue gas of coal combustion by varying the compositions and concentrations of feed gas (O"2/CO"2/N"2) and the ratios of recycled flue gas. The differences between O"2/recycled flue gas (O"2/RFG) combustion and general air combustion are also discussed. Experimental results indicate that the maximum concentration of CO"2 in O"2/CO"2 combustion system is 95% as the feed gas is 30% O"2/70% CO"2. The average concentration of CO"2 in the flue gas of O"2/CO"2 coal combustion system is higher than 90% and much higher than that of O"2/N"2 coal combustion system. This high concentration of CO"2 is beneficial for the separation of CO"2 from the flue gas by adsorption or absorption technologies. The maximum concentration of CO"2 in O"2/N"2 combustion system is only 34% at the feed gas 50% O"2/50% N"2, the concentration of CO"2 is increased with the concentration of O"2 in feed gas. By O"2/CO"2 combustion technology, higher concentration of SO"2 is produced as the feed gas is 30% O"2/70% CO"2 or 40% O"2/60% CO"2, while higher concentration of NOx is produced as the feed gas is 20% O"2/80% CO"2 or 50% O"2/50% CO"2. The mass flow rates of CO"2, SO"2 and NOx in the flue gas are all increased with the ratio of recycled flue gas except for the feed gas 20% O"2/80% CO"2. The enhanced mass flow rates of air pollutants in such O"2/RFG combustion system are also beneficial for improving the control efficiencies of air pollution control devices. By O"2/N"2 combustion technology, higher concentrations of SO"2 and NOx are produced as the feed gas is 21% O"2/79% N"2. The results also indicate that the formation of NOx in general air combustion system is higher than that in O"2/RFG or O"2/CO"2 combustion system.
Description:
This study investigates the emission characteristics of CO"2, SO"2 and NOx in the flue gas of coal combustion by varying the compositions and concentrations of feed gas (O"2/CO"2/N"2) and the ratios of recycled flue gas. The differences between O"2/recycled flue gas (O"2/RFG) combustion and general air combustion are also discussed. Experimental results indicate that the maximum concentration of CO"2 in O"2/CO"2 combustion system is 95% as the feed gas is 30% O"2/70% CO"2. The average concentration of CO"2 in the flue gas of O"2/CO"2 coal combustion system is higher than 90% and much higher than that of O"2/N"2 coal combustion system. This high concentration of CO"2 is beneficial for the separation of CO"2 from the flue gas by adsorption or absorption technologies. The maximum concentration of CO"2 in O"2/N"2 combustion system is only 34% at the feed gas 50% O"2/50% N"2, the concentration of CO"2 is increased with the concentration of O"2 in feed gas. By O"2/CO"2 combustion technology, higher concentration of SO"2 is produced as the feed gas is 30% O"2/70% CO"2 or 40% O"2/60% CO"2, while higher concentration of NOx is produced as the feed gas is 20% O"2/80% CO"2 or 50% O"2/50% CO"2. The mass flow rates of CO"2, SO"2 and NOx in the flue gas are all increased with the ratio of recycled flue gas except for the feed gas 20% O"2/80% CO"2. The enhanced mass flow rates of air pollutants in such O"2/RFG combustion system are also beneficial for improving the control efficiencies of air pollution control devices. By O"2/N"2 combustion technology, higher concentrations of SO"2 and NOx are produced as the feed gas is 21% O"2/79% N"2. The results also indicate that the formation of NOx in general air combustion system is higher than that in O"2/RFG or O"2/CO"2 combustion system.
