GB416404A - Improvements in the recovery of carbon disulphide and methyl alcohol from aqueous solutions obtained in the purification of benzole with methyl alcohol and caustic alkali - Google Patents

Improvements in the recovery of carbon disulphide and methyl alcohol from aqueous solutions obtained in the purification of benzole with methyl alcohol and caustic alkali

Info

Publication number
GB416404A
GB416404A GB20760/34A GB2076034A GB416404A GB 416404 A GB416404 A GB 416404A GB 20760/34 A GB20760/34 A GB 20760/34A GB 2076034 A GB2076034 A GB 2076034A GB 416404 A GB416404 A GB 416404A
Authority
GB
United Kingdom
Prior art keywords
methyl alcohol
carbon bisulphide
benzole
aqueous liquid
still
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
GB20760/34A
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.)
ERIC GRAY HANCOCK
NAT BENZOLE Co Ltd
Original Assignee
ERIC GRAY HANCOCK
NAT BENZOLE 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 ERIC GRAY HANCOCK, NAT BENZOLE Co Ltd filed Critical ERIC GRAY HANCOCK
Priority to GB20760/34A priority Critical patent/GB416404A/en
Publication of GB416404A publication Critical patent/GB416404A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00Carbon; Compounds thereof
    • C01B32/70Compounds containing carbon and sulfur, e.g. thiophosgene

Landscapes

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

Abstract

In purifying benzole by treatment with a solution of caustic soda or potash in methyl alcohol or with methyl alcohol and solid alkali, separation of the treating agents from the benzole is effected by adding water in quantity not more than the volume of methyl alcohol and the aqueous liquid is treated to separate methyl alcohol and carbon bisulphide. The aqueous liquid is neutralized with dilute mineral acid preferably by pouring it into the acid or with sulphur dioxide, and is passed into a still fitted with a column. The first runnings consisting of a constant boiling mixture of carbon bisulphide and methyl alcohol boiling at about 36--37 DEG C. are collected under water. Carbon bisulphide forms a lower layer and the upper layer of aqueous methyl alcohol is returned to the still. The receiver is changed at about 60 DEG C. when all the carbon bisulphide has distilled, and concentrated methyl alcohol distils over. The carbon bisulphide is purified by washing with dilute alkali, water, and dilute sulphuric acid.ALSO:In purifying benzole by treatment with a solution of caustic soda or potash in methyl alcohol, separation of the treating agents from the benzole is effected by adding water in amount not more than the methyl alcohol, and the aqueous liquid is treated to separate carbon bisulphide and methyl alcohol. The aqueous liquid is neutralized with dilute mineral acid preferably by pouring it into the acid, or with sulphur dioxide and is passed into a still fitted with a column. The first runnings consisting of a constant boiling mixture of carbon bisulphide and methyl alcohol boiling at about 36--37 DEG C. is collected under water. Carbon bisulphide forms a lower layer and the upper layer of aqueous methyl alcohol is returned to the still. The receiver is changed at about 60 DEG C. to receive concentrated methylalcohol.
GB20760/34A 1933-03-06 1933-03-06 Improvements in the recovery of carbon disulphide and methyl alcohol from aqueous solutions obtained in the purification of benzole with methyl alcohol and caustic alkali Expired GB416404A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB20760/34A GB416404A (en) 1933-03-06 1933-03-06 Improvements in the recovery of carbon disulphide and methyl alcohol from aqueous solutions obtained in the purification of benzole with methyl alcohol and caustic alkali

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB20760/34A GB416404A (en) 1933-03-06 1933-03-06 Improvements in the recovery of carbon disulphide and methyl alcohol from aqueous solutions obtained in the purification of benzole with methyl alcohol and caustic alkali

Publications (1)

Publication Number Publication Date
GB416404A true GB416404A (en) 1934-09-06

Family

ID=10151194

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20760/34A Expired GB416404A (en) 1933-03-06 1933-03-06 Improvements in the recovery of carbon disulphide and methyl alcohol from aqueous solutions obtained in the purification of benzole with methyl alcohol and caustic alkali

Country Status (1)

Country Link
GB (1) GB416404A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113336227A (en) * 2021-05-31 2021-09-03 成都市科隆化学品有限公司 Benzene-free carbon disulfide and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113336227A (en) * 2021-05-31 2021-09-03 成都市科隆化学品有限公司 Benzene-free carbon disulfide and preparation method thereof
CN113336227B (en) * 2021-05-31 2022-09-27 成都市科隆化学品有限公司 Benzene-free carbon disulfide and preparation method thereof

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