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Title: Study on a novel semidry flue gas desulfurization with multifluid alkaline spray generator

Abstract

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.

Authors:
; ; ;  [1]
  1. Shanghai Jiao Tong University, Shanghai (China). School for Mechanical Engineering
Publication Date:
OSTI Identifier:
20688448
Resource Type:
Journal Article
Resource Relation:
Journal Name: Industrial and Engineering Chemistry Research; Journal Volume: 44; Journal Issue: 23
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; DESULFURIZATION; FLUE GAS; SPRAYS; WATER; DRY SCRUBBERS; CALCIUM CARBONATES; ADSORBENTS; PH VALUE; AIR POLLUTION CONTROL

Citation Formats

Zhou, Y.G., Zhang, M.C., Wang, D.F., and Wang, L. Study on a novel semidry flue gas desulfurization with multifluid alkaline spray generator. United States: N. p., 2005. Web. doi:10.1021/ie050457n.
Zhou, Y.G., Zhang, M.C., Wang, D.F., & Wang, L. Study on a novel semidry flue gas desulfurization with multifluid alkaline spray generator. United States. doi:10.1021/ie050457n.
Zhou, Y.G., Zhang, M.C., Wang, D.F., and Wang, L. Wed . "Study on a novel semidry flue gas desulfurization with multifluid alkaline spray generator". United States. doi:10.1021/ie050457n.
@article{osti_20688448,
title = {Study on a novel semidry flue gas desulfurization with multifluid alkaline spray generator},
author = {Zhou, Y.G. and Zhang, M.C. and Wang, D.F. and Wang, L.},
abstractNote = {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.},
doi = {10.1021/ie050457n},
journal = {Industrial and Engineering Chemistry Research},
number = 23,
volume = 44,
place = {United States},
year = {Wed Nov 09 00:00:00 EST 2005},
month = {Wed Nov 09 00:00:00 EST 2005}
}