GB390863A - Improvements in the recovery of ethylene - Google Patents

Improvements in the recovery of ethylene

Info

Publication number
GB390863A
GB390863A GB2846031A GB2846031A GB390863A GB 390863 A GB390863 A GB 390863A GB 2846031 A GB2846031 A GB 2846031A GB 2846031 A GB2846031 A GB 2846031A GB 390863 A GB390863 A GB 390863A
Authority
GB
United Kingdom
Prior art keywords
gases
propylene
kerosene
ethylene
pressure
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
GB2846031A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB2846031A priority Critical patent/GB390863A/en
Publication of GB390863A publication Critical patent/GB390863A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C7/00Purification; Separation; Use of additives
    • C07C7/11Purification; Separation; Use of additives by absorption, i.e. purification or separation of gaseous hydrocarbons with the aid of liquids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Gas Separation By Absorption (AREA)

Abstract

Ethylene is recovered from gases rich in ethylene and containing also propylene and/or other olefines, especially cracking still gases, by washing the gases with a mineral oil fraction approximating to kerosene and substantially all boiling above 200 DEG C. at ordinary pressure, the propylene and higher olefines being absorbed, while the ethylene remains undissolved. The washing may be effected at normal pressure, but is preferably effected at pressures above 10 atmospheres. The dissolved gases may subsequently be liberated from the kerosene by heating and/or reduction of pressure in stages, the resulting gas fraction or fractions poor in propylene being returned to the washing step, preferably to the appropriate stage of the multi-stage compressor when such is used, while the fraction or fractions rich in propylene are collected separately for the recovery of propylene therefrom. According to an example, cracking still gases are washed at 22 DEG C. with kerosene boiling between 200 and 300 DEG C. in countercurrent, in an unpacked tower 2 inches in diameter and 12 feet high. The gases are compressed before scrubbing to a pressure of 21 atmospheres, and the gases dissolved in the kerosene subsequently liberated in two stages by reduction of pressure, first to 7 atmospheres, then to atmospheric pressure. The ethylene and propylene obtained may be used for the manufacture of derivatives such as ethyl alcohol or ethylene glycol in known manner. The gas recovered from the kerosene may be used for the production of propylene and ethylene derivatives, or it may be treated according to Specification 374,510 for the production of additional ethyl alcohol. Specifications 106,080, 248,375, and 273,781, [all in Class 2 (iii), Dyes &c.], also are referred to. According to the Provisional Specification the initial gases may be subjected to a preliminary washing with ammoniacal cuprous formate, acetate, carbonate, or the like in order to concentrate the olefines. Cracking still gases may first be purified from sulphur at atmospheric pressure, for example, by means of an alkaline solution or suspension of ferric oxide or hydroxide, and preferably also from acetylene by washing with water. The gas is then compressed to 20 atmospheres and washed with ammoniacal copper formate. The gas obtained from the used formate on release of pressure and heating to about 65 DEG C. is compressed to about 60 atmospheres, and then washed with kerosene.
GB2846031A 1931-10-13 1931-10-13 Improvements in the recovery of ethylene Expired GB390863A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2846031A GB390863A (en) 1931-10-13 1931-10-13 Improvements in the recovery of ethylene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2846031A GB390863A (en) 1931-10-13 1931-10-13 Improvements in the recovery of ethylene

Publications (1)

Publication Number Publication Date
GB390863A true GB390863A (en) 1933-04-13

Family

ID=10275971

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2846031A Expired GB390863A (en) 1931-10-13 1931-10-13 Improvements in the recovery of ethylene

Country Status (1)

Country Link
GB (1) GB390863A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2417048A (en) * 1942-02-27 1947-03-11 Jasco Inc Separation and segregation of a material from a liquid mixture by means of a solvent
US2418183A (en) * 1944-11-16 1947-04-01 Shell Dev Prevention of emulsions during extraction of olefins with metal salt solutions
US2420906A (en) * 1942-08-29 1947-05-20 Standard Oil Dev Co Butadiene extraction
DE1108204B (en) * 1957-02-26 1961-06-08 Hoechst Ag Process for decomposing the reaction mixtures of hydrocarbon splitting

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2417048A (en) * 1942-02-27 1947-03-11 Jasco Inc Separation and segregation of a material from a liquid mixture by means of a solvent
US2420906A (en) * 1942-08-29 1947-05-20 Standard Oil Dev Co Butadiene extraction
US2418183A (en) * 1944-11-16 1947-04-01 Shell Dev Prevention of emulsions during extraction of olefins with metal salt solutions
DE1108204B (en) * 1957-02-26 1961-06-08 Hoechst Ag Process for decomposing the reaction mixtures of hydrocarbon splitting

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