Flue gas desulfurization method and apparatus
Abstract
A combined furnace limestone injection and dry scrubber flue gas desulfurization (FGD) system collects solids from the flue gas stream in first particulate collection device located downstream of an outlet of a convection pass of the furnace and upstream of the dry scrubber. The collected solids are diverted to the dry scrubber feed slurry preparation system to increase sulfur oxide species removal efficiency and sorbent utilization. The level of lime in the feed slurry provided to the dry scrubber is thus increased, which enhances removal of sulfur oxide species in the dry scrubber. The decreased particulate loading to the dry scrubber helps maintain a desired degree of free moisture in the flue gas stream entering the dry scrubber, which enhances sulfur oxide species removal both in the dry scrubber and downstream particulate collector, normally a baghouse.
- Inventors:
-
- Canfield, OH
- Washington Township, OH
- Issue Date:
- Research Org.:
- Babcock and Wilcox Co
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 871867
- Patent Number(s):
- 5814288
- Application Number:
- 08/669762
- Assignee:
- McDermott Technology, Inc. (New Orleans, LA)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
- DOE Contract Number:
- AC22-92PC92160
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- flue; gas; desulfurization; method; apparatus; combined; furnace; limestone; injection; dry; scrubber; fgd; collects; solids; stream; particulate; collection; device; located; downstream; outlet; convection; pass; upstream; collected; diverted; feed; slurry; preparation; increase; sulfur; oxide; species; removal; efficiency; sorbent; utilization; level; lime; provided; increased; enhances; decreased; loading; helps; maintain; desired; degree; free; moisture; entering; collector; normally; baghouse; oxide species; particulate collector; located downstream; gas desulfurization; sulfur oxide; collection device; dry scrubber; feed slurry; gas stream; flue gas; sorbent utilization; scrubber flue; slurry preparation; stream entering; removal efficiency; device located; desired degree; free moisture; combined furnace; collects solids; particulate collection; furnace limestone; desulfurization method; limestone injection; /423/110/
Citation Formats
Madden, Deborah A, and Farthing, George A. Flue gas desulfurization method and apparatus. United States: N. p., 1998.
Web.
Madden, Deborah A, & Farthing, George A. Flue gas desulfurization method and apparatus. United States.
Madden, Deborah A, and Farthing, George A. Tue .
"Flue gas desulfurization method and apparatus". United States. https://www.osti.gov/servlets/purl/871867.
@article{osti_871867,
title = {Flue gas desulfurization method and apparatus},
author = {Madden, Deborah A and Farthing, George A},
abstractNote = {A combined furnace limestone injection and dry scrubber flue gas desulfurization (FGD) system collects solids from the flue gas stream in first particulate collection device located downstream of an outlet of a convection pass of the furnace and upstream of the dry scrubber. The collected solids are diverted to the dry scrubber feed slurry preparation system to increase sulfur oxide species removal efficiency and sorbent utilization. The level of lime in the feed slurry provided to the dry scrubber is thus increased, which enhances removal of sulfur oxide species in the dry scrubber. The decreased particulate loading to the dry scrubber helps maintain a desired degree of free moisture in the flue gas stream entering the dry scrubber, which enhances sulfur oxide species removal both in the dry scrubber and downstream particulate collector, normally a baghouse.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Sep 29 00:00:00 EDT 1998},
month = {Tue Sep 29 00:00:00 EDT 1998}
}