CH520624A - Process for recovering useful products from an aqueous solution, sulfuric acid pickling waste - Google Patents

Process for recovering useful products from an aqueous solution, sulfuric acid pickling waste

Info

Publication number: CH520624A
Authority: CH; Switzerland
Prior art keywords: aqueous solution; sulfuric acid; acid pickling; useful products; pickling waste
Prior art date: 1968-08-26

Application number

CH1274769A

Other languages

French (fr)

Inventor

Warren Brophy John

Original Assignee

Prenco Mfg Company

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.)

1968-08-26

Filing date

1969-08-22

Publication date

1972-03-31

1969-08-22 Application filed by Prenco Mfg Company filed Critical Prenco Mfg Company

1972-03-31 Publication of CH520624A publication Critical patent/CH520624A/en

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
- C01B17/48—Sulfur dioxide; Sulfurous acid
- C01B17/50—Preparation of sulfur dioxide
- C01B17/58—Recovery of sulfur dioxide from acid tar or the like or from any waste sulfuric acid
- 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
- 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)
Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Treatment Of Water By Oxidation Or Reduction (AREA)

CH1274769A 1968-08-26 1969-08-22 Process for recovering useful products from an aqueous solution, sulfuric acid pickling waste CH520624A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US75510168A	1968-08-26	1968-08-26

Publications (1)

Publication Number	Publication Date
CH520624A true CH520624A (en)	1972-03-31

Family

ID=25037735

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CH1274769A CH520624A (en)	1968-08-26	1969-08-22	Process for recovering useful products from an aqueous solution, sulfuric acid pickling waste

Country Status (8)

Country	Link
JP (1)	JPS4918356B1 (en)
BE (1)	BE737917A (en)
CH (1)	CH520624A (en)
DE (1)	DE1942950A1 (en)
FR (1)	FR2016382A1 (en)
GB (1)	GB1272407A (en)
NL (1)	NL6912779A (en)
SE (1)	SE358671B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5262295U (en) *	1975-10-29	1977-05-07
DE2643798A1 (en) *	1976-09-29	1978-04-06	Bayer Ag	METHOD FOR PROCESSING WASTE SULFURIC ACID AND IRON SULFATHEPTAHYDRATE TO FRESH ACID
DE3216420A1 (en) *	1982-05-03	1983-11-03	Bayer Ag, 5090 Leverkusen	METHOD FOR CLEAVING DILUTED SULFURIC ACID
DK191386D0 (en) *	1986-04-24	1986-04-24	Koege Kemisk Vaerk	emulsifier

1969
- 1969-07-25 GB GB37550/69A patent/GB1272407A/en not_active Expired
- 1969-08-01 SE SE10851/69A patent/SE358671B/xx unknown
- 1969-08-21 NL NL6912779A patent/NL6912779A/xx unknown
- 1969-08-22 CH CH1274769A patent/CH520624A/en not_active IP Right Cessation
- 1969-08-23 DE DE19691942950 patent/DE1942950A1/en active Pending
- 1969-08-25 FR FR6929035A patent/FR2016382A1/fr not_active Withdrawn
- 1969-08-25 BE BE737917D patent/BE737917A/xx unknown
- 1969-08-25 JP JP44066538A patent/JPS4918356B1/ja active Pending

Also Published As

Publication number	Publication date
JPS4918356B1 (en)	1974-05-09
DE1942950A1 (en)	1970-04-02
BE737917A (en)	1970-02-25
NL6912779A (en)	1970-03-02
GB1272407A (en)	1972-04-26
FR2016382A1 (en)	1970-05-08
SE358671B (en)	1973-08-06

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Legal Events

Date	Code	Title	Description
1975-03-27	PL	Patent ceased