JPS56147677A - Shut down method for concentrating apparatus - Google Patents

Shut down method for concentrating apparatus

Info

Publication number
JPS56147677A
JPS56147677A JP5210180A JP5210180A JPS56147677A JP S56147677 A JPS56147677 A JP S56147677A JP 5210180 A JP5210180 A JP 5210180A JP 5210180 A JP5210180 A JP 5210180A JP S56147677 A JPS56147677 A JP S56147677A
Authority
JP
Japan
Prior art keywords
concentrator
pressure
condenser
temp
waste liquid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP5210180A
Other languages
Japanese (ja)
Inventor
Masayuki Tamano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IHI Corp
Original Assignee
IHI Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by IHI Corp filed Critical IHI Corp
Priority to JP5210180A priority Critical patent/JPS56147677A/en
Publication of JPS56147677A publication Critical patent/JPS56147677A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To maintain the inside of a concentrating apparatus in a deaerating state and prevent corrosion by evacuating the inside of the system to the saturated pressure corresponding to the temp. lowered by the heat radiation of the liquid remained in the apparatus at the stopping of the operation of the concentrating apparatus for waste liquid etc.
CONSTITUTION: In the case of stopping the operation of a concentrator 5, a heating steam line valve 1 and a liquid feed line valve 2 are closed, then the remained steam is condensed in a condenser 6, and the vapor phase part in the apparatus is removed of heat and radiates heat of itself in the condenser 6, thereby lowering its temp. Along with this, the pressure in the concentrator 5 decreases, but air flows therein from the outside and the inside of concentrator 5 restores the atmospheric pressure. In order to prevent this, a vacuum pump 15 is operated to decrease the pressure in the concentrator 5 by way of a throttle valve 14 and the condenser 6, whereby the dissolution of the air into the waste liquid in the concentrator 5 is prevented. The pressure in the concentrator 5 is maintained at the saturated pressure corresponding to the waste liquid temp. by the operation of the vacuum pump 15.
COPYRIGHT: (C)1981,JPO&Japio
JP5210180A 1980-04-19 1980-04-19 Shut down method for concentrating apparatus Pending JPS56147677A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5210180A JPS56147677A (en) 1980-04-19 1980-04-19 Shut down method for concentrating apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5210180A JPS56147677A (en) 1980-04-19 1980-04-19 Shut down method for concentrating apparatus

Publications (1)

Publication Number Publication Date
JPS56147677A true JPS56147677A (en) 1981-11-16

Family

ID=12905448

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5210180A Pending JPS56147677A (en) 1980-04-19 1980-04-19 Shut down method for concentrating apparatus

Country Status (1)

Country Link
JP (1) JPS56147677A (en)

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