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Patent Searching and Data


Title:
METHOD AND APPARATUS FOR PRODUCING PROTECTIVE FILM ON COOLING PIPE OF HEAT EXCHANGER
Document Type and Number:
Japanese Patent JPS6029595
Kind Code:
A
Abstract:

PURPOSE: To recover a protective film forming liquid and ensure perfect preservation of the environment, by connecting a group of cooling pipes at end parts to form forward and backward passages.

CONSTITUTION: A protective film forming liquid 45 contained in a tank 33 is fed under pressure by a supplying pump 34, and is fed into the cooling pipes 15a, 16a of heat exchangers 15, 16 through a heater 38. The liquid 45 thus fed in is passed through the cooling pipe 15a, is then passed through a bypass pipe 31 and the cooling pipe on the other side into a bypass pipe 32, and is returned into the tank 33. Accordingly, the problem on the preservation of the environment associated with the discharge of ferrous sulfate or the like can be solved.


Inventors:
ITOU TAKAO
Application Number:
JP13847883A
Publication Date:
February 14, 1985
Filing Date:
July 28, 1983
Export Citation:
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Assignee:
TOSHIBA KK
International Classes:
F28F19/02; (IPC1-7): F28F19/02