Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Waste gas purifier
Patent
1990-10-02
1996-10-22
Warden, Robert J.
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Waste gas purifier
422171, 422172, 422180, 422211, 422222, 55378, 553411, B01D 4602
Patent
active
055673945
ABSTRACT:
A method and apparatus for controlling emissions of a fossil fuel fired boiler including a high temperature fabric filter house with an SCR catalyst situated therein for receiving flue gases along with an injected ammoniacal compound and sorbent. The sorbent reacts with the SO.sub.x while the ammoniacal compound reduces the NO.sub.x in the presence of the SCR catalyst inside the high temperature fabric filter house. Both the SO.sub.x and the particulates are removed upstream of the SCR catalyst to diminish the problems of SO.sub.2 or SO.sub.3 poisoning of the catalyst and erosion and fouling of the catalyst with the fly ash. Since the sulfur oxides and particulates are removed prior to the heat recovery system, the fouling and corrosion potential are substantially decreased thus allowing the heat recovery system to be operated at a lower outlet flue gas temperature which yields an incremental improvement in energy recovery.
REFERENCES:
patent: 1814597 (1931-07-01), Handforth
patent: 3857680 (1974-12-01), Porta et al.
patent: 4282115 (1981-08-01), Atsukawa et al.
patent: 4309386 (1982-01-01), Pirsh
patent: 4578092 (1986-03-01), Klimczak
patent: 4645653 (1987-02-01), Kimura
patent: 4732879 (1988-03-01), Kalinowski et al.
patent: 4793981 (1988-12-01), Doyle et al.
patent: 4861353 (1989-08-01), Wyss
patent: 4871522 (1989-10-01), Doyle
patent: 4874586 (1989-10-01), Szymanski et al.
L. R. White, R. J. Forester, D. L. O'Brien & G. A. Schmitt, "Ceramic Fabrics for Filtration at High Temperatures, 550.degree.-1600.degree. F", 3M Co., Biennial PFBC Conference, Milwaukee, Wisonsin, Jun., 1986.
Goldschmidt, Klaus, "VKR Full-Scale SCR Experience on Hardcoal Fired Boilers", VEBA Kraftwerke Ruhr AG Gelsenkirchen, Germany.
Promotional brochure-First Distributed at the Pittsburgh Coal Conference, Sept. 12-16, 1988.
Kitto, Jr., J. B., Modern Power Systems, Jan., 1989.
Chu, P., Downs, W., and Holmes, A. R., "Sorbent and Ammonia Injection at Economizer Temperatures Upstream of a High-Temp. Bag ", AICHE Meeting, Apr. 2-6, 1989.
Chu Paul
Downs William
Doyle John B.
Smith Peter V.
Edwards Robert J.
Kalka Daniel S.
The Babcock & Wilcox Company
Tran Hien
Warden Robert J.
LandOfFree
SO.sub.x , NO.sub.x , and particulate removal system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with SO.sub.x , NO.sub.x , and particulate removal system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and SO.sub.x , NO.sub.x , and particulate removal system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2356500