JPS5460681A - Automatic control method of process of system containing calcium chlrode - Google Patents
Automatic control method of process of system containing calcium chlrodeInfo
- Publication number
- JPS5460681A JPS5460681A JP12781177A JP12781177A JPS5460681A JP S5460681 A JPS5460681 A JP S5460681A JP 12781177 A JP12781177 A JP 12781177A JP 12781177 A JP12781177 A JP 12781177A JP S5460681 A JPS5460681 A JP S5460681A
- Authority
- JP
- Japan
- Prior art keywords
- cacl2
- waste gas
- cooling tower
- liquid
- concentration
- 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
- 238000000034 method Methods 0.000 title abstract 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 title 1
- 229910052791 calcium Inorganic materials 0.000 title 1
- 239000011575 calcium Substances 0.000 title 1
- 239000007788 liquid Substances 0.000 abstract 7
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 abstract 6
- 229910001628 calcium chloride Inorganic materials 0.000 abstract 5
- 239000001110 calcium chloride Substances 0.000 abstract 5
- 238000001816 cooling Methods 0.000 abstract 5
- 238000004064 recycling Methods 0.000 abstract 5
- 239000002912 waste gas Substances 0.000 abstract 5
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 238000006477 desulfuration reaction Methods 0.000 abstract 1
- 230000023556 desulfurization Effects 0.000 abstract 1
- 238000010790 dilution Methods 0.000 abstract 1
- 239000012895 dilution Substances 0.000 abstract 1
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 abstract 1
- 229910052602 gypsum Inorganic materials 0.000 abstract 1
- 239000010440 gypsum Substances 0.000 abstract 1
- 238000004886 process control Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Landscapes
- Control Of Non-Electrical Variables (AREA)
Abstract
PURPOSE: To enable the concentration of CaCl2 to be controlled with ease, when the process control of a system containing calcium chloride (CaCl2) is operated, by means of utilizing that there is a constant proportional relation between the concentration of CaCl2 and the electric conductivity of the solution.
CONSTITUTION: In a desulfurization process of lime- gypsum method, the waste gas introduced from the underpart of a cooling tower 3 is cooled and washed by means of allowing the recycling liquid containing CaCl2 to be recycled from a recycling liquid tank 4 of cooling tower to the cooling tower 3 through a line 6 via a pump 5, and the treated waste gas is sent to the next absorbing tower of SO2. The water content of the waste gas is removed by the waste gas treatment in this cooling tower 3, and the lowering of pH is brought by means of enlarging the concentration of CaCl2 and of being absorbed by one part of sulfur oxide in the waste gas. Therefore, a conductivity meter 1 and a pH meter 2 are set up on the recycling line 6 of the recycled liquid and the recycling liquid of a recycling liquid tank 4 of cooling tower is regulated to a preferable concentration and pH of CaCl2 automatically, by means of allowing this to be interlocked with a valve 7 for pH regulating liquid and a valve 8 for dilution liquid.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12781177A JPS5460681A (en) | 1977-10-24 | 1977-10-24 | Automatic control method of process of system containing calcium chlrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12781177A JPS5460681A (en) | 1977-10-24 | 1977-10-24 | Automatic control method of process of system containing calcium chlrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5460681A true JPS5460681A (en) | 1979-05-16 |
Family
ID=14969245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12781177A Pending JPS5460681A (en) | 1977-10-24 | 1977-10-24 | Automatic control method of process of system containing calcium chlrode |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5460681A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994015476A1 (en) * | 1992-12-30 | 1994-07-21 | Unilever Plc | Treatment of fruits and vegetables by calcium salts |
-
1977
- 1977-10-24 JP JP12781177A patent/JPS5460681A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994015476A1 (en) * | 1992-12-30 | 1994-07-21 | Unilever Plc | Treatment of fruits and vegetables by calcium salts |
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