Catalytic unit for gas phase catalysis, more especially for use

Details Catalytic unit for gas phase catalysis, more especially for use Catalytic unit for gas phase catalysis, more especially for use

1984-12-04

1986-04-22

Sever, Frank

Chemical apparatus and process disinfecting, deodorizing, preser

Control element responsive to a sensed operating condition

Control element is a binary responsive valve

422171, 422172, 422173, 422176, 422180, 422191, 422194, 422220, 422222, B01J 904

Patent

active

045841772

ABSTRACT:
Flue gases containing crackable and combustible volatiles e.g. from a wood-burning stove are passed through a catalytic combustor having two spaced catalytic units each having small longitudinally extending catalytic flow passages. Air supplied into a chamber between the two units supports after-combustion of combustible volatiles in the downstream catalytic unit. Some pre-cracking and combustion takes place in the upstream catalytic unit, which serves as a gas collimator and disallows any flow of air from the intermediate chamber into the fire box of the stove, whereby combustion in the fire box can be closely controlled to increase production of combustible volatiles. Each unit may have flow passages which decrease in cross-sectional size and increase in length toward the central portion of the unit, thus encouraging uniformity of flow of the flue gases and of the catalytic reaction over the entire cross section of each unit. The units are surrounded by an air jacket into which air is supplied at one end, and the air is distributed uniformly around the periphery of the intermediate chamber. Each unit has a central bypass opening and a temperature responsive valve which closes the bypass opening when the catalytic unit reaches its threshold temperature of operation. A reflector, preferably with a curved reflective face, reflects radiant heat to the downstream fuel of the combustor, and an exterior heat exchange jacket transfers heat to the surroundings from the hot gases exiting from the combustor. A flame-arresting screen is spaced between the fire box and the combustor to prevent diffusion flames originating in the fire box from lapping on the catalytic flow passages.

REFERENCES:
patent: 3018841 (1962-01-01), Gerlich
patent: 3090677 (1963-05-01), Scheitlin et al.
patent: 3144309 (1964-08-01), Sparrow
patent: 3180712 (1965-04-01), Hamblin
patent: 3222140 (1965-12-01), Scivally et al.
patent: 3428434 (1969-02-01), Hurko
patent: 3428435 (1969-02-01), Hurko et al.
patent: 3544264 (1970-12-01), Hardison
patent: 3656915 (1972-04-01), Tourtellotte
patent: 3780772 (1973-12-01), Carnanham et al.
patent: 3817714 (1974-06-01), Wiley
patent: 3852042 (1974-12-01), Wagner
patent: 3853485 (1974-12-01), Hogan
patent: 3869082 (1976-07-01), Cairns et al.
patent: 3891575 (1975-06-01), Brautigam et al.
patent: 3910252 (1975-10-01), Richard
patent: 3910850 (1975-10-01), Turner
patent: 3953176 (1976-04-01), Santala et al.
patent: 3967929 (1976-07-01), Tamazawa et al.
patent: 4040252 (1977-08-01), Mosier et al.
patent: 4049388 (1977-09-01), Sheitlin et al.
patent: 4072007 (1978-02-01), Sanday
patent: 4072471 (1978-02-01), Morgan, Jr. et al.
patent: 4118199 (1978-10-01), Volker et al.
patent: 4127389 (1978-11-01), Hackmesser et al.
patent: 4144627 (1979-03-01), Noda et al.
patent: 4175107 (1979-11-01), Iwaoka et al.
patent: 4182120 (1980-01-01), Niebylski
patent: 4186172 (1980-01-01), Scholz
patent: 4203906 (1980-05-01), Takada et al.
patent: 4218422 (1980-08-01), Schock et al.
patent: 4220625 (1980-09-01), Toh et al.
patent: 4235843 (1980-11-01), Tadokoro et al.
patent: 4278639 (1981-07-01), Tadokoro et al.
patent: 4300956 (1981-11-01), Rosenburger et al.
patent: 4345528 (1982-08-01), Allaire et al.
patent: 4363785 (1982-12-01), Willson
patent: 4373507 (1983-02-01), Schwartz et al.
Powell E., "Catalytic Wood Stoves" Popular Science, Jan. 1982, pp. 77-79.

Affiliated with

Also associated with

Rating

Catalytic unit for gas phase catalysis, more especially for use does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Catalytic unit for gas phase catalysis, more especially for use , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Catalytic unit for gas phase catalysis, more especially for use will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1914689