Rapid cooling down method for regenerative thermal oxidizer

Details Rapid cooling down method for regenerative thermal oxidizer Rapid cooling down method for regenerative thermal oxidizer

1997-05-12

2000-12-26

Ferensic, Denise L.

Heating

Work chamber having heating means

Combustion products heat work by contact

432180, 432 18, F27D 1700

Patent

active

061649627

ABSTRACT:
A method of cooling a regenerative thermal oxidizer down rapidly includes the steps of increasing the cycle time of the heat exchangers once a decision has been made to shut the regenerative thermal oxidizer down. By increasing the cycle time, the regenerative thermal oxidizer rejects more heat from the system. That is, the efficiency of the system goes down, and more heat is lost. In this way, the system approaches an ambient temperature much more quickly then in known systems. In one method of performing this invention, the cycle time is increased as much as possible, and as rapidly as possible while monitoring the outlet temperature on the outlet gas. The cycles are reversed only when the outlet temperature approaches a maximum safe operating temperature. In a second method, the cycle times are increased in pre-programmed steps. By utilizing the present invention, one is able to cool a regenerative thermal oxidizer to ambient temperatures in less than half the time of the prior art systems.

REFERENCES:
patent: 5026277 (1991-06-01), York
patent: 5101741 (1992-04-01), Gross et al.
patent: 5417927 (1995-05-01), Houston
patent: 5538420 (1996-07-01), Klobucar et al.
patent: 5540584 (1996-07-01), Creco

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