Method of regenerating molecular sieve material

Details Method of regenerating molecular sieve material Method of regenerating molecular sieve material

1981-03-30

1983-10-11

Cintins, Ivars C.

Liquid purification or separation

Processes

Ion exchange or selective sorption

203 41, 210689, 502 38, B01J 2034

Patent

active

044091044

ABSTRACT:
A molecular sieve material for removing water from a liquid, such as distilled alcohol produced from grain, is placed in a series of concentric cylindrical spaces of narrow but equal width and separated by concentric cylindrical passages of lesser width, through which a heated gas, such as air containing the gaseous product of combustion of a fuel, is passed for heating the material for regeneration. After heating, the material is cooled by a gas, such as air, through the same passages. The cylindrical sleeves forming the spaces and passages are relatively thin and the spaces are closed at opposite ends by annular rings to which the sleeves are attached, as by welding, with spacing blocks at spaced points in the passages. Additional rings, of slightly less width than the spaces, are spot welded just inside the end rings to permit flow of liquid but retain the sieve material. The entire structure is preferably upright, enclosed by an insulated housing, and liquid is passed to the bottom and removed from the top of the spaces by headers connected by tubes with the respective spaces, while a water cooled condenser is connected to the outlet. A pipe for conveying heated air from a burner, ahead of a blower, connects with the lower end of the housing, with an outlet pipe at the top for recirculation. A down pipe connects the top and bottom air pipes and is offset above a slide shut-off valve above a flap suction valve which permits outside air to be sucked in for cooling. During cooling, a weighted flap valve on the upper pipe permits discharge of exhaust air.

REFERENCES:
patent: 1993142 (1935-03-01), Johnson
patent: 3398208 (1968-08-01), Ward
patent: 4130484 (1978-12-01), Marwil et al.
Hawlay, G., Condensed Chemical Dictionary, 8th Ed. New York, Van Nostrand Reinhold, 1971, pp. 946-947.

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