GB1406945A - Waste pickle liquor regeneration - Google Patents

Waste pickle liquor regeneration

Info

Publication number
GB1406945A
GB1406945A GB2957673A GB2957673A GB1406945A GB 1406945 A GB1406945 A GB 1406945A GB 2957673 A GB2957673 A GB 2957673A GB 2957673 A GB2957673 A GB 2957673A GB 1406945 A GB1406945 A GB 1406945A
Authority
GB
United Kingdom
Prior art keywords
pickle liquor
acid
liquor
soln
fluidized bed
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
GB2957673A
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.)
Oceanic Process Corp
Original Assignee
Oceanic Process Corp
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 Oceanic Process Corp filed Critical Oceanic Process Corp
Publication of GB1406945A publication Critical patent/GB1406945A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Compounds Of Iron (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Removal Of Specific Substances (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

1406945 Recovering acid from pickle liquor OCEANIC PROCESS CORP 21 June 1973 [29 June 1972] 29576/73 Heading C1A Acid, e.g. HCl or H 2 SO 4 , is recovered from spent pickle liquor by (a) concentrating the liquor, (b) adding Fe 2 O 3 to partially neutralize the liquor to a pH of 1-2, (c) oxidizing, e.g. with a free O 2 -containing gas, the Fe<SP>2+</SP> in the concentrate into Fe<SP>3+</SP>, (d) separating the Fe 2 O 3 .- H 2 O precipitate and then (e) recovering the acid from the remaining soln. The recovery step (e) may be carried out by either (i) concentrating the soln. to precipitate FeCl 3 .6H 2 O which is then decomposed at 500-600‹ C. into Fe 2 O 3 and HCl, or (ii) spraying the soln. on to a fluidized bed of hot Fe 2 O 3 particles or into a heated chamber, thereby decomposing the ferric salt into Fe 2 O 3 and acid. The temp. of the fluidized bed or chamber is 500-600‹ C. and 500-700‹ C. for decomposing FeCl 3 and Fe 2 (SO 4 ) 3 respectively. The agglomerated Fe 2 O 3 from the fluidized bed may be either removed, reheated and recycled to the bed or used to partially neutralize the pickle liquor. The flue gases from the reheater may be used to concentrate the pickle liquor.
GB2957673A 1972-06-29 1973-06-21 Waste pickle liquor regeneration Expired GB1406945A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US26770372A 1972-06-29 1972-06-29

Publications (1)

Publication Number Publication Date
GB1406945A true GB1406945A (en) 1975-09-17

Family

ID=23019825

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2957673A Expired GB1406945A (en) 1972-06-29 1973-06-21 Waste pickle liquor regeneration

Country Status (4)

Country Link
JP (1) JPS4956898A (en)
CA (1) CA988398A (en)
DE (1) DE2331569A1 (en)
GB (1) GB1406945A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1028088A1 (en) * 1999-02-10 2000-08-16 Fernando H. Garcia Method for neutralising and/or regenerating acid baths and plant that carries out this method
EP1382571A1 (en) * 2002-07-16 2004-01-21 Sachtleben Chemie GmbH Method for producing iron hydroxide, hydrated iron oxide and iron oxide from filter salts obtained by the recovery of waste acids
WO2009153321A1 (en) * 2008-06-19 2009-12-23 Sms Siemag Process Technologies Gmbh Processing method for recovering iron oxide and hydrochloric acid
EP2784186A1 (en) * 2013-03-27 2014-10-01 CMI UVK GmbH Process for recovering metal oxide particles from a spent acid solution containing metal salts
EP2784185A1 (en) * 2013-03-27 2014-10-01 CMI UVK GmbH Process for recovering acids from a spent acid solution containing metal salts
CN111039495A (en) * 2020-01-06 2020-04-21 湖南景翌湘台环保高新技术开发有限公司 Comprehensive recovery method of waste rare earth polishing powder and steel pickling waste liquid
CN114249353A (en) * 2021-12-18 2022-03-29 大连市环境保护有限公司产业废弃物处理厂 Method for regenerating liquid ferrous chloride from waste hydrochloric acid

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50148059A (en) * 1974-05-20 1975-11-27
JPS543596B2 (en) * 1974-05-20 1979-02-24
JPS5190754A (en) * 1975-02-08 1976-08-09
EP0085666A3 (en) * 1982-02-03 1985-07-03 A/S Niro Atomizer Method of processing sulfuric acid having a content of metal sulfates
FR2586260B2 (en) * 1984-12-03 1991-04-19 Air Liquide PROCESS FOR IMPLEMENTING OXIDIZING GAS TO REALIZE WASTE BLADE HYDROCHLOR SOLUTIONS
FR2795747B3 (en) * 1999-06-14 2001-04-20 Lorraine Laminage PROCESS FOR THE REGENERATION OF AN IRON CHLORIDE SOLUTION TO A HYDROCHLORIC ACID SOLUTION
CN110040689A (en) * 2019-04-25 2019-07-23 兰州泰邦化工科技有限公司 A kind of big production capacity and sodium chlorite production equipment and its production method without spent acid discharge
CN113772873B (en) * 2021-10-09 2023-08-25 北部湾大学 Method for preparing industrial salt from pickling waste liquid by utilizing waste heat

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1028088A1 (en) * 1999-02-10 2000-08-16 Fernando H. Garcia Method for neutralising and/or regenerating acid baths and plant that carries out this method
WO2000047518A1 (en) * 1999-02-10 2000-08-17 Bartolomei, Carlo Alfredo Method for neutralising and/or regenerating acid baths and plant that carries out this method
EP1382571A1 (en) * 2002-07-16 2004-01-21 Sachtleben Chemie GmbH Method for producing iron hydroxide, hydrated iron oxide and iron oxide from filter salts obtained by the recovery of waste acids
WO2009153321A1 (en) * 2008-06-19 2009-12-23 Sms Siemag Process Technologies Gmbh Processing method for recovering iron oxide and hydrochloric acid
RU2495827C2 (en) * 2008-06-19 2013-10-20 Смс Симаг Акциенгезельшафт Method for reclamation of iron oxide and hydrochloric acid
US8628740B2 (en) 2008-06-19 2014-01-14 Sms Siemag Aktiengesellschaft Processing method for recovering iron oxide and hydrochloric acid
EP2784186A1 (en) * 2013-03-27 2014-10-01 CMI UVK GmbH Process for recovering metal oxide particles from a spent acid solution containing metal salts
EP2784185A1 (en) * 2013-03-27 2014-10-01 CMI UVK GmbH Process for recovering acids from a spent acid solution containing metal salts
CN111039495A (en) * 2020-01-06 2020-04-21 湖南景翌湘台环保高新技术开发有限公司 Comprehensive recovery method of waste rare earth polishing powder and steel pickling waste liquid
CN111039495B (en) * 2020-01-06 2024-05-17 湖南景翌湘台环保高新技术开发有限公司 Comprehensive recovery method of waste rare earth polishing powder and steel pickling waste liquid
CN114249353A (en) * 2021-12-18 2022-03-29 大连市环境保护有限公司产业废弃物处理厂 Method for regenerating liquid ferrous chloride from waste hydrochloric acid

Also Published As

Publication number Publication date
CA988398A (en) 1976-05-04
DE2331569A1 (en) 1974-01-17
JPS4956898A (en) 1974-06-03

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee