GB935877A - Purification of dilute commercial sulfuric acid - Google Patents

Purification of dilute commercial sulfuric acid

Info

Publication number
GB935877A
GB935877A GB3816561A GB3816561A GB935877A GB 935877 A GB935877 A GB 935877A GB 3816561 A GB3816561 A GB 3816561A GB 3816561 A GB3816561 A GB 3816561A GB 935877 A GB935877 A GB 935877A
Authority
GB
United Kingdom
Prior art keywords
active carbon
sulphide
hydrogen sulphide
hydrogen
acid
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
GB3816561A
Inventor
Kurt Jockers
Hermann Meier
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.)
BASF SE
Original Assignee
BASF SE
Badische Anilin and Sodafabrik AG
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 BASF SE, Badische Anilin and Sodafabrik AG filed Critical BASF SE
Publication of GB935877A publication Critical patent/GB935877A/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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/082—Compounds containing nitrogen and non-metals and optionally metals
    • C01B21/14—Hydroxylamine; Salts thereof
    • C01B21/1409—Preparation
    • C01B21/1418—Preparation by catalytic reduction of nitrogen oxides or nitrates with hydrogen

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Catalysts (AREA)

Abstract

Inorganic or organic impurities are removed from dilute sulphuric acid by treatment with hydrogen sulphide in preferred amount 5-50 mg./litre, in the presence of active carbon, and after separating the active carbon from the sulphuric acid the remainder of the hydrogen sulphide is destroyed with hydrogen peroxide in the presence of active carbon. The hydrogen sulphide may be added as such or produced in situ by adding a solution of sodium sulphide, sodium hydrogen sulphide, ammonium sulphide or calcium sulphide. The acid containing hydrogen sulphide is passed through a first tower packed with active carbon having a surface area of 1000 mg.2-1 and a grain size of 3 mm., in 5-10 minutes. Excess hydrogen peroxide, e.g. 25-250 mg. per litre is added and the liquid is passed through a second tower packed with active carbon, in 3-6 minutes. Four organic p impurities are present, the impure acid may be pretreated by passage through a tower containing active carbon before treatment with hydrogen sulphide.
GB3816561A 1960-11-15 1961-10-25 Purification of dilute commercial sulfuric acid Expired GB935877A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB60086A DE1124024B (en) 1960-11-15 1960-11-15 Process for the purification of dilute technical sulfuric acid

Publications (1)

Publication Number Publication Date
GB935877A true GB935877A (en) 1963-09-04

Family

ID=6972703

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3816561A Expired GB935877A (en) 1960-11-15 1961-10-25 Purification of dilute commercial sulfuric acid

Country Status (4)

Country Link
CH (1) CH419075A (en)
DE (1) DE1124024B (en)
GB (1) GB935877A (en)
NL (1) NL271122A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016160684A1 (en) * 2015-03-31 2016-10-06 Rohm And Haas Company Treating sulfuric acid
WO2016160686A1 (en) * 2015-03-31 2016-10-06 Rohm And Haas Company Sulfonation process

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19808939A1 (en) * 1998-03-03 1999-09-09 Basf Ag Process for the preparation of hydroxylammonium salts
CN102923675B (en) * 2012-11-27 2014-08-06 武汉工程大学 Process method for purifying sulfuric acid in fluorobenzene waste acid

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016160684A1 (en) * 2015-03-31 2016-10-06 Rohm And Haas Company Treating sulfuric acid
WO2016160686A1 (en) * 2015-03-31 2016-10-06 Rohm And Haas Company Sulfonation process
KR20170133385A (en) * 2015-03-31 2017-12-05 롬 앤드 하아스 컴패니 Sulfuric acid treatment
CN107438582A (en) * 2015-03-31 2017-12-05 罗门哈斯公司 Handle sulfuric acid
US10138124B2 (en) 2015-03-31 2018-11-27 Rohm And Haas Company Treating sulfuric acid
US10428163B2 (en) 2015-03-31 2019-10-01 Rohm And Haas Company Sulfonation process

Also Published As

Publication number Publication date
CH419075A (en) 1966-08-31
NL271122A (en)
DE1124024B (en) 1962-02-22

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