JPS56147677A - Shut down method for concentrating apparatus - Google Patents
Shut down method for concentrating apparatusInfo
- 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
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
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) |
-
1980
- 1980-04-19 JP JP5210180A patent/JPS56147677A/en active Pending
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