[go: up one dir, main page]

GB1272407A - Recovering values from waste pickle liquor - Google Patents

Recovering values from waste pickle liquor

Info

Publication number
GB1272407A
GB1272407A GB37550/69A GB3755069A GB1272407A GB 1272407 A GB1272407 A GB 1272407A GB 37550/69 A GB37550/69 A GB 37550/69A GB 3755069 A GB3755069 A GB 3755069A GB 1272407 A GB1272407 A GB 1272407A
Authority
GB
United Kingdom
Prior art keywords
concentrate
iii
content
stream
pickle liquor
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.)
Expired
Application number
GB37550/69A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Prenco Manufacturing Co
Original Assignee
Prenco Manufacturing Co
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.)
Filing date
Publication date
Application filed by Prenco Manufacturing Co filed Critical Prenco Manufacturing Co
Publication of GB1272407A publication Critical patent/GB1272407A/en
Expired legal-status Critical Current

Links

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)

Abstract

1,272,407. Recovering values from waste pickle liquor. PRENCO MFG. CO. 25 July, 1969 [26 Aug., 1968], No. 37550/69. Heading C1A. Waste H 2 SO 4 pickle liquor containing FeSO 4 and free H 2 SO 4 is treated to remove the iron content and to recover H 2 SO 4 by (i) removing a substantial portion of the water content of the liquor by evaporation to form a concentrate, (ii) preheating the concentrate in a closed space to a temperature at least equal to the vaporization temperature of the aqueous constituent of the concentrate at ambient pressure, (iii) atomizing the preheated concentrate in air and subjecting a stream of the atomized concentrate to a pyrodecomposition operation by heating the stream of atomized concentrate in an oxidizing atmosphere to about 3000‹F. at which the H 2 SO 4 content of the concentrate is decomposed into SO 2 and water vapour and the FeSO 4 content is decomposed into gaseous SO 2 , solid iron oxide particles and water vapour, (iv) separating the iron oxide particles from the effluent stream from (iii), (v) separating SO 2 from the effluent stream and reacting it with oxygen and water to form H 2 SO 4 which is recovered. A (hydro) carbonaceous fuel may be mixed with the concentrate to provide enough heat for step (iii), and the heat from the effluent stream of (iii) may be used for the evaporation in (i). Suitable apparatus is described.
GB37550/69A 1968-08-26 1969-07-25 Recovering values from waste pickle liquor Expired GB1272407A (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
GB1272407A true GB1272407A (en) 1972-04-26

Family

ID=25037735

Family Applications (1)

Application Number Title Priority Date Filing Date
GB37550/69A Expired GB1272407A (en) 1968-08-26 1969-07-25 Recovering values from waste pickle liquor

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)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0093909A1 (en) * 1982-05-03 1983-11-16 Bayer Ag Process for decomposing diluted sulfuric acid
US5078782A (en) * 1986-04-24 1992-01-07 Berol Nobel (Suisse) S.A. Pesticidal concentrate compositions

Families Citing this family (2)

* 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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0093909A1 (en) * 1982-05-03 1983-11-16 Bayer Ag Process for decomposing diluted sulfuric acid
US5078782A (en) * 1986-04-24 1992-01-07 Berol Nobel (Suisse) S.A. Pesticidal concentrate compositions

Also Published As

Publication number Publication date
SE358671B (en) 1973-08-06
CH520624A (en) 1972-03-31
DE1942950A1 (en) 1970-04-02
JPS4918356B1 (en) 1974-05-09
NL6912779A (en) 1970-03-02
BE737917A (en) 1970-02-25
FR2016382A1 (en) 1970-05-08

Similar Documents

Publication Publication Date Title
GB1272407A (en) Recovering values from waste pickle liquor
JPS5210805A (en) A process of recovering metals in treatment residue such as incinerati on ashes and industrial waste liquids
GB899988A (en) Oxidation and reclamation process
ES437246A1 (en) Treatment of water vapor generated in concentrating an aqueous urea solution
US3761575A (en) Process for the cracking of ammonium sulfate
GB1507396A (en) Recovery of sulphur values from spent sulphuric acid
GB951420A (en) Purification of aluminium-containing organic compounds
US3852412A (en) Nitric acid recovery system
GB1348937A (en) Processing of coke oven gas
GB742195A (en) Improvements in or relating to the pickling of ferrous metals
GB1120072A (en) Recovering values from waste pickle liquor
GR3022911T3 (en) Method for treating organic waste.
GB1342457A (en) Processes applicable to waste materials
JP2751246B2 (en) How to clean up contaminated soil
CN110090386B (en) A kind of method of low temperature catalytic oxidation of sodium cyanide
GB1482901A (en) Process and apparatus for the utilization of sulphur compounds contained in gases containing oxygen and a high water vapour content
GB1397256A (en) Process for removing gaseous impurities from waste gases
JPS54127895A (en) Prevention of solidification of water-granulated slag
Sasaki Hydrogen peroxide treatment on typical Hokkaido soils
JPS571426A (en) Method and device for continuously recovering nitrogen oxide from gas containing nitrogen
ES8602147A1 (en) Process for the recovery of tin
GB1473438A (en) Wet oxidation of organic matter
GB863766A (en) Improvements relating to the extraction of nickel, cobalt and iron from laterite ore
GB1282625A (en) A process in the roasting of ore for removing quantities of tin contained therein
JPS57183303A (en) Hydrogen recovery from coke oven gas

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees