GB672723A - Improvements in or relating to the removal of carbonaceous materials from sulphuric acid - Google Patents

Improvements in or relating to the removal of carbonaceous materials from sulphuric acid

Info

Publication number
GB672723A
GB672723A GB1899649A GB1899649A GB672723A GB 672723 A GB672723 A GB 672723A GB 1899649 A GB1899649 A GB 1899649A GB 1899649 A GB1899649 A GB 1899649A GB 672723 A GB672723 A GB 672723A
Authority
GB
United Kingdom
Prior art keywords
acid
nitric acid
column
passed
air
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
GB1899649A
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.)
TIMOTHY ARROWSMITH RAYNE
WILFRED SAMUEL NATHAN
Anglo Iranian Oil Co Ltd
Original Assignee
TIMOTHY ARROWSMITH RAYNE
WILFRED SAMUEL NATHAN
Anglo Iranian Oil Co Ltd
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 TIMOTHY ARROWSMITH RAYNE, WILFRED SAMUEL NATHAN, Anglo Iranian Oil Co Ltd filed Critical TIMOTHY ARROWSMITH RAYNE
Priority to GB1899649A priority Critical patent/GB672723A/en
Publication of GB672723A publication Critical patent/GB672723A/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
    • C01B17/92—Recovery from acid tar or the like, e.g. alkylation acids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Treating Waste Gases (AREA)

Abstract

Carbonaceous material is removed from sulphuric acid used for treatment of hydrocarbons by continuously countercurrently contacting the spent acid in an oxidising zone with air and nitric acid or any oxide of nitrogen other than N2O, the air being employed in sufficient quantity to provide free oxygen in the gaseous effluent, and passing the effluent comprising free oxygen, at least one oxide of nitrogen and water vapour to a cooling zone where nitric acid is formed, separating the nitric acid from the residual effluent and employing the nitric acid or nitrogen oxides obtained therefrom for the treatment of further spent acid, which has been concentrated to at least 70 per cent by weight, is passed into the top of a column maintained at 100-230 DEG C. The acid from the base of the column may be passed continuously through a second stripping column against a current of air for removal of dissolved nitric acid and nitrogen oxides and the resultant gas mixture is passed to the first column. The condensation of the nitric acid may be carried out in the presence of sulphuric acid, which may be obtained from the base of the stripping column, and the resulting mixed acid contacted with the spent acid or passed to the top of the stripping column.
GB1899649A 1949-07-19 1949-07-19 Improvements in or relating to the removal of carbonaceous materials from sulphuric acid Expired GB672723A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1899649A GB672723A (en) 1949-07-19 1949-07-19 Improvements in or relating to the removal of carbonaceous materials from sulphuric acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1899649A GB672723A (en) 1949-07-19 1949-07-19 Improvements in or relating to the removal of carbonaceous materials from sulphuric acid

Publications (1)

Publication Number Publication Date
GB672723A true GB672723A (en) 1952-05-28

Family

ID=10121995

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1899649A Expired GB672723A (en) 1949-07-19 1949-07-19 Improvements in or relating to the removal of carbonaceous materials from sulphuric acid

Country Status (1)

Country Link
GB (1) GB672723A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955920A (en) * 1955-10-14 1960-10-11 Nat Distillers Chem Corp Decarbonization of spent acids
FR2493823A1 (en) * 1980-11-13 1982-05-14 Ugine Kuhlmann PURIFICATION OF RESIDUAL SULFURIC ACIDS FROM ALCOHOL SYNTHESIS
DE102005049084A1 (en) * 2005-10-13 2007-04-26 Wacker Chemie Ag Process for the regeneration of sulfuric acid

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955920A (en) * 1955-10-14 1960-10-11 Nat Distillers Chem Corp Decarbonization of spent acids
FR2493823A1 (en) * 1980-11-13 1982-05-14 Ugine Kuhlmann PURIFICATION OF RESIDUAL SULFURIC ACIDS FROM ALCOHOL SYNTHESIS
EP0052548A1 (en) * 1980-11-13 1982-05-26 Elf Atochem S.A. Purification of residual sulphuric acids from alcoholic synthesis
DE102005049084A1 (en) * 2005-10-13 2007-04-26 Wacker Chemie Ag Process for the regeneration of sulfuric acid
US7842272B2 (en) 2005-10-13 2010-11-30 Wacker Chemie Ag Process for the regeneration of sulfuric acid

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