Study on a novel semidry flue gas desulfurization with multifluid alkaline spray generator
- Shanghai Jiao Tong University, Shanghai (China). School for Mechanical Engineering
The advantages and disadvantages of the typical semidry flue gas desulfurization (FGD) processes are analyzed, and a novel semidry FGD process with multifluid alkaline spray generator is first proposed to improve the colliding contact efficiency between sorbent particles and spray water droplets, and to form a large amount of aqueous lime slurry. The experimental results show that the colliding contact efficiency between lime particles and water droplets in the prefix alkaline spray generator may reach about 70%, which is significantly higher than the colliding contact efficiency of 25% in duct sorbent injection. The SO{sub 2} removal efficiency can reach 64.5% when the Ca/S molar ratio is 1.5, the approach to the saturation temperature is 10.3{sup o}C, and the flue gas residence time is 2.25 s. It is higher than that of in-duct sorbent injection under similar conditions, and the sorbent utilization is improved to 43%. Therefore, the FGD process with a prefix alkaline spray generator can greatly improve SO{sub 2} removal efficiency and sorbent utilization and it will be a new, simple and efficient semidry FGD process for industrial application in the future.
- OSTI ID:
- 20688448
- Journal Information:
- Industrial and Engineering Chemistry Research, Vol. 44, Issue 23; ISSN 0888-5885
- Country of Publication:
- United States
- Language:
- English
Similar Records
Numerical simulation of multiphase flow and collision humidification in the multifluid alkaline spray generator for a novel semidry flue gas desulfurization system
Effect of near-wall air curtain on the wall deposition of droplets in a semidry flue gas desulfurization reactor