JPS55165192A - Scale removing method - Google Patents
Scale removing methodInfo
- Publication number
- JPS55165192A JPS55165192A JP7267779A JP7267779A JPS55165192A JP S55165192 A JPS55165192 A JP S55165192A JP 7267779 A JP7267779 A JP 7267779A JP 7267779 A JP7267779 A JP 7267779A JP S55165192 A JPS55165192 A JP S55165192A
- Authority
- JP
- Japan
- Prior art keywords
- acid
- scale
- damaging
- liquid
- ion
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title abstract 5
- 239000007788 liquid Substances 0.000 abstract 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 abstract 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 abstract 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 abstract 3
- RGHNJXZEOKUKBD-SQOUGZDYSA-N D-gluconic acid Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 abstract 2
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 abstract 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 abstract 2
- 150000001450 anions Chemical class 0.000 abstract 2
- 239000007864 aqueous solution Substances 0.000 abstract 2
- 150000002500 ions Chemical class 0.000 abstract 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 abstract 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 abstract 2
- 150000007524 organic acids Chemical class 0.000 abstract 2
- 239000000126 substance Substances 0.000 abstract 2
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 abstract 1
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 abstract 1
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 abstract 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 abstract 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 abstract 1
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 abstract 1
- 229910021502 aluminium hydroxide Inorganic materials 0.000 abstract 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 abstract 1
- 235000015165 citric acid Nutrition 0.000 abstract 1
- 238000004090 dissolution Methods 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 abstract 1
- 235000019253 formic acid Nutrition 0.000 abstract 1
- 229910001679 gibbsite Inorganic materials 0.000 abstract 1
- 239000000174 gluconic acid Substances 0.000 abstract 1
- 235000012208 gluconic acid Nutrition 0.000 abstract 1
- 239000004310 lactic acid Substances 0.000 abstract 1
- 235000014655 lactic acid Nutrition 0.000 abstract 1
- 239000001630 malic acid Substances 0.000 abstract 1
- 235000011090 malic acid Nutrition 0.000 abstract 1
- 235000006408 oxalic acid Nutrition 0.000 abstract 1
- 229910001220 stainless steel Inorganic materials 0.000 abstract 1
- 239000010935 stainless steel Substances 0.000 abstract 1
- 239000011975 tartaric acid Substances 0.000 abstract 1
- 235000002906 tartaric acid Nutrition 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning In General (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
PURPOSE: To completely dissolve and remove the scale without damaging the evaporator, by using aqueous solution coexisting the anion of organic acid and Al ion, on occasion of removing the scale stuck on the inner wall of black liquid evaporator at the process of manufacturing pulp by chemical ground method etc.
CONSTITUTION: Lowering of heat transmission efficiency of concentrator made of stainless steel of concentration apparatus, is prevented, by removing the scale stuck on the inner wall of black liquid side of evaporation concentration apparatus which is produced by exhaust liquid from digesting apparatus, at the time of manufacturing pulp by chemical ground method or semichemical method. For that reason, aqueous solution containing anion of one kind or two kinds or more of organic acid, such as formic acid, acetic acid, glycolic acid, oxalic acid, lactic acid, malonic acid, malic acid, tartaric acid, gluconic acid, citric acid etc. and Al ion by dissolving Al(OH)3, are used as the liquid for scale dissolution at 50W70°C. The scale is completely and rapidly dissolved and removed without damaging the groundwork of the concentrator.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7267779A JPS55165192A (en) | 1979-06-09 | 1979-06-09 | Scale removing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7267779A JPS55165192A (en) | 1979-06-09 | 1979-06-09 | Scale removing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55165192A true JPS55165192A (en) | 1980-12-23 |
| JPS6252634B2 JPS6252634B2 (en) | 1987-11-06 |
Family
ID=13496228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7267779A Granted JPS55165192A (en) | 1979-06-09 | 1979-06-09 | Scale removing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55165192A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62141187A (en) * | 1985-12-12 | 1987-06-24 | 株式会社パ−マケム・アジア | Detergent for papermaking process |
| GB2309980A (en) * | 1996-02-06 | 1997-08-13 | Abbey | Treating ferrous surface with gluconate and citrate salts |
| CN106083569A (en) * | 2016-06-12 | 2016-11-09 | 日照金禾博源生化有限公司 | A kind of preparation method of specified particle size anhydrous citric acid |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01154238U (en) * | 1988-04-19 | 1989-10-24 |
-
1979
- 1979-06-09 JP JP7267779A patent/JPS55165192A/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62141187A (en) * | 1985-12-12 | 1987-06-24 | 株式会社パ−マケム・アジア | Detergent for papermaking process |
| GB2309980A (en) * | 1996-02-06 | 1997-08-13 | Abbey | Treating ferrous surface with gluconate and citrate salts |
| GB2309980B (en) * | 1996-02-06 | 1998-12-16 | Abbey | Treatment of ferrous metal surfaces |
| US5916379A (en) * | 1996-02-06 | 1999-06-29 | Abbey Research & Development Ltd. | Treatment of ferrous metal surfaces |
| CN106083569A (en) * | 2016-06-12 | 2016-11-09 | 日照金禾博源生化有限公司 | A kind of preparation method of specified particle size anhydrous citric acid |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6252634B2 (en) | 1987-11-06 |
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