Method and apparatus for conservation of energy in a thermal oxi

Details Method and apparatus for conservation of energy in a thermal oxi Method and apparatus for conservation of energy in a thermal oxi

1977-07-11

1979-11-27

Thomas, Earl C.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

101416R, 431 5, 432 72, 422109, 422111, 422168, B01D 5334, F23G 706

Patent

active

041761626

ABSTRACT:
Solvents evaporated from ink solutions in the drying sections of a multi-station printing press are converted into harmless gases by heating in an oxidation chamber. The amount of energy required to maintain the oxidation temperature is substantially reduced by preheating the exhaust by passing same through a previously heated bed of ceramic heat exchanger elements prior to introduction into the oxidation chamber. At high solvent concentration levels, preheating to the ignition temperature may result in excess heat of combustion being generated which is detrimental to the oxidation chamber structure. In order to regulate the heat generated, a portion of the heat exchanger bed is bypassed by a regulated amount of exhaust. Alternatively, the solvent concentration level of the exhaust can be lowered by mixing same with the floor sweep exhaust (of substantially lower solvent concentration) in regulated proportions in order to control the amount of heat of combustion generated during preheating. The latter method has the advantage of providing floor sweep capability without increased cost.

REFERENCES:
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patent: 2651992 (1953-09-01), Sauberlich
patent: 3086353 (1963-04-01), Ridgeway
patent: 3090675 (1963-05-01), Ruff et al.
patent: 3172251 (1965-03-01), Johnson
patent: 3211534 (1965-10-01), Ridgeway
patent: 3214246 (1965-10-01), Ridgeway

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