CH471905A - Process for recovering sulfuric acid and iron as oxide from aqueous residual sulfuric acid pickling liquor containing ferrous sulfate and free sulfuric acid - Google Patents
Process for recovering sulfuric acid and iron as oxide from aqueous residual sulfuric acid pickling liquor containing ferrous sulfate and free sulfuric acidInfo
- Publication number
- CH471905A CH471905A CH330267A CH330267A CH471905A CH 471905 A CH471905 A CH 471905A CH 330267 A CH330267 A CH 330267A CH 330267 A CH330267 A CH 330267A CH 471905 A CH471905 A CH 471905A
- Authority
- CH
- Switzerland
- Prior art keywords
- sulfuric acid
- iron
- oxide
- ferrous sulfate
- recovering
- Prior art date
Links
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 title 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title 2
- 235000003891 ferrous sulphate Nutrition 0.000 title 1
- 239000011790 ferrous sulphate Substances 0.000 title 1
- 229910052742 iron Inorganic materials 0.000 title 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 title 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- 238000005554 pickling Methods 0.000 title 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
- C23G1/36—Regeneration of waste pickling liquors
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/90—Separation; Purification
- C01B17/901—Recovery from spent acids containing metallic ions, e.g. hydrolysis acids, pickling acids
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
- C01G49/06—Ferric oxide [Fe2O3]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US53800766A | 1966-03-28 | 1966-03-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH471905A true CH471905A (en) | 1969-04-30 |
Family
ID=24145040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH330267A CH471905A (en) | 1966-03-28 | 1967-03-07 | Process for recovering sulfuric acid and iron as oxide from aqueous residual sulfuric acid pickling liquor containing ferrous sulfate and free sulfuric acid |
Country Status (7)
| Country | Link |
|---|---|
| BE (1) | BE695091A (en) |
| CH (1) | CH471905A (en) |
| DE (1) | DE1621637A1 (en) |
| FR (1) | FR1515350A (en) |
| GB (1) | GB1120072A (en) |
| NL (2) | NL6704421A (en) |
| SE (1) | SE329319B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0392211A1 (en) * | 1989-04-07 | 1990-10-17 | Sulzer-Escher Wyss AG | Process for the reuse of spent sulfuric acid |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2428207A1 (en) * | 1978-06-07 | 1980-01-04 | Gueugnon Forges | Processing waste nitric-hydrofluoric acid pickling soln. - to give hydrofluoric acid, pure metal oxide(s) and innocuous off-gas |
| DE3130841A1 (en) * | 1981-08-04 | 1983-02-24 | Bayer Ag, 5090 Leverkusen | METHOD FOR CLEAVING DILUTED SULFURIC ACID |
| DE3216420A1 (en) * | 1982-05-03 | 1983-11-03 | Bayer Ag, 5090 Leverkusen | METHOD FOR CLEAVING DILUTED SULFURIC ACID |
| AT403665B (en) * | 1996-10-30 | 1998-04-27 | Andritz Patentverwaltung | METHOD AND SYSTEM FOR THE SEPARATION OF FINE OXIDE PARTICLES |
| CN106943847B (en) * | 2017-04-20 | 2023-08-15 | 成都瑞柯林工程技术有限公司 | Device for recovering fine iron oxide powder from pickling waste acid regeneration system |
-
0
- NL NL134070D patent/NL134070C/xx active
-
1967
- 1967-02-21 GB GB8107/67A patent/GB1120072A/en not_active Expired
- 1967-03-06 BE BE695091D patent/BE695091A/xx unknown
- 1967-03-06 FR FR97523A patent/FR1515350A/en not_active Expired
- 1967-03-07 CH CH330267A patent/CH471905A/en not_active IP Right Cessation
- 1967-03-08 DE DE19671621637 patent/DE1621637A1/en active Pending
- 1967-03-22 SE SE04071/67A patent/SE329319B/xx unknown
- 1967-03-28 NL NL6704421A patent/NL6704421A/xx unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0392211A1 (en) * | 1989-04-07 | 1990-10-17 | Sulzer-Escher Wyss AG | Process for the reuse of spent sulfuric acid |
Also Published As
| Publication number | Publication date |
|---|---|
| NL6704421A (en) | 1967-09-29 |
| NL134070C (en) | 1900-01-01 |
| FR1515350A (en) | 1968-03-01 |
| BE695091A (en) | 1967-09-06 |
| GB1120072A (en) | 1968-07-17 |
| DE1621637A1 (en) | 1971-06-03 |
| SE329319B (en) | 1970-10-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |