Furnaces – Process – Supplying fluid
Patent
1992-05-22
1994-04-26
Favors, Edward G.
Furnaces
Process
Supplying fluid
110297, 110234, F23L 100, F23L 900
Patent
active
053056981
ABSTRACT:
This invention is directed to a method and apparatus for improving fluid flow and gas mixing in boilers. More particularly, this invention pertains to a method and apparatus for improved fluid flow and gas mixing in kraft recovery boilers for increased energy efficiency, reduced TRS emissions and increased capacity. The method of introducing air into a boiler furnace comprises: (a) introducing air through at least one opening located on at least a first wall of the interior of the furnace; and (b) introducing air through at least one second opening located on a second wall of the interior of the furnace opposed to the first wall at the same, or slightly different, elevations. The method of introducing air into a boiler furnace may also comprise: (a) introducing air into the furnace in the form of a first set of small and large jets originating from one wall of the interior of the furnace; and (b) introducing air into the furnace in the form of a second set of small and large jets originating from the wall of the interior of the furnace opposite the first wall. The locations of the sources of the first set of small and large jets may be placed so that they oppose the sources of the second set of small and large jets, with small jets opposing large jets, and vice versa. The sizes of the jets may be regulated by varying opening size, number of openings in groups of openings, air pressure upstream of the openings, or combinations thereof.
REFERENCES:
patent: 1473665 (1923-11-01), Berthelon
patent: 2416462 (1947-02-01), Wilcoxson
patent: 2730997 (1956-01-01), Birkner
patent: 3048131 (1962-08-01), Hardgrove
patent: 3920377 (1975-11-01), Yanuki et al.
patent: 4246853 (1981-01-01), Mehta
patent: 4712491 (1987-12-01), Schmidt
patent: 4744312 (1988-05-01), Narisoko et al.
patent: 4785744 (1988-11-01), Fontaine
patent: 4823710 (1989-04-01), Garrido et al.
patent: 5007354 (1991-04-01), Uppstu
patent: 5022331 (1991-06-01), Simonen
patent: 5139414 (1992-08-01), Nakamoto et al.
Babcock & Wilcox, The World's Leading Recovery Boiler, Publication date unknown.
MacCallum, Colin and Blackwell, B. R., Modern Kraft Recovery Boiler Liquor-Spray and Air Systems, technical paper International Recovery Conference, New Orleans, 1985, pp. 1, 2, 25 and 26.
Arthur D. Little, Inc., Incinerator Overfire Mixing Study, Feb. 1972, pp. 1C, 1G, VI pp. 3-8.
Chapman, Paul J. and Jones, Andrew K., Recovery Boiler Secondary Air System Development Using Experimental and Computational Fluid Dynamics, Tappi Engineering Conference, Seattle, Sep. 1990.
Blackwell, Brian; Hambleton, Hugh and Brown, Ed, Two-Wall Primary Air in Kraft Recovery Boilers, Canadian Pulp and Paper Association Conference, Whistler, B. C., 1991.
Adams, T. N. & Frederick, W. J., Kraft Recovery Boiler Physical and Chemical Processes.
Babcock & Wilcox, Steam/Its Generation and Use, 1978.
Fridley M. W. & Barson, J. A. Upgrading the Combustion System of a 1956-Vintage Recovery Steam Generator, Tappi Journal, Mar. 1988.
Fridley, M. W., Mid America Packaging, Barsin, J. A. Upgrading a 1956 Vintage Recovery Steam Generator--II, 1988 Annual Meeting, Canadian Pulp and Paper Association.
Blackwell Brian R.
MacCallum Colin
LandOfFree
Method and apparatus for improving fluid flow and gas mixing in does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for improving fluid flow and gas mixing in , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for improving fluid flow and gas mixing in will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1705357