GB992165A - Separation of glycerine and other lower polyhydric alcohols from the hydrogenolysis products of saccharides - Google Patents

Separation of glycerine and other lower polyhydric alcohols from the hydrogenolysis products of saccharides

Info

Publication number
GB992165A
GB992165A GB2863363A GB2863363A GB992165A GB 992165 A GB992165 A GB 992165A GB 2863363 A GB2863363 A GB 2863363A GB 2863363 A GB2863363 A GB 2863363A GB 992165 A GB992165 A GB 992165A
Authority
GB
United Kingdom
Prior art keywords
glycerine
column
fraction
water
hydrogenolysis
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
GB2863363A
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.)
Zeneca Inc
Original Assignee
Atlas Chemical Industries Inc
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 Atlas Chemical Industries Inc filed Critical Atlas Chemical Industries Inc
Publication of GB992165A publication Critical patent/GB992165A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/09—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrolysis
    • C07C29/10—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrolysis of ethers, including cyclic ethers, e.g. oxiranes
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
    • C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
    • C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
    • C07C29/80—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation

Landscapes

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

Abstract

992,165. Separation of glycerine from the products of the hydrogenolysis of saccharides. ATLAS CHEMICAL INDUSTRIES Inc. July 19, 1963 [July 25, 1962], No. 28633/63. Heading BIB. Glycerine is separated from the products of the hydrogenolysis of saccharides by a threestage distillation process wherein the components of the hydrogenolysis product which boil at a lower temperature than glycerine are distilled over in a "Splitter" column, the bottoms fraction from the "Splitter" is fractionated in a "Tetritol Column" to obtain a heads fraction which contains substantially all the glycerine, and this fraction is then re-fractionated a "First Glycerine Column" and a "Second Glycerine Column" in order to obtain pure glycerine. The flow diagram relates to the treatment of a nickel-catalysed hydrogenolysis product of invert sugar which contains glycerine together with water, ethylene glycol, propylene glycol, 1,2- and 2,3-butanediol, 1,2,3- and 1,2,4-butanetriol, tetritols, and hexitols. The product is diluted with water, filtered, and then passed through an anion and a cation exchange medium to remove ionizable impurities. The product is next freed from water in a "Water Column", operated at a base-temperature of 230 ‹C. and a pressure slightly above atmospheric. The dehydrated product passes to the "Splitter". The top of this column and of the following columns are maintained at an absolute pressure of 100 mm. Hg. and a basetemperature of 230 ‹C., and sufficient open steam is fed into the bottom section of each column to effect distillation. The overhead fraction from the "Tetritol Column" is heated at 145 ‹C. with 0À1% of sulphuric acid for 4 hours at an absolute pressure of 10 mm. Hg., in order to convert polyols having boiling points near glycerine into compounds which can be more readily separated from glycerine. The acidified material is diluted with water to obtain a glycerine concentration of about 90%, and the diluted fraction is neutralized by passing it through an anion exchange medium. The heads fraction from the splitter may be fractionated at atmospheric pressure in order to separate a fraction containing propylene glycol and the butanediols from a fraction containing ethylene glycol. Specification 354,196 is referred to.
GB2863363A 1962-07-25 1963-07-19 Separation of glycerine and other lower polyhydric alcohols from the hydrogenolysis products of saccharides Expired GB992165A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21227662A 1962-07-25 1962-07-25

Publications (1)

Publication Number Publication Date
GB992165A true GB992165A (en) 1965-05-19

Family

ID=22790343

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2863363A Expired GB992165A (en) 1962-07-25 1963-07-19 Separation of glycerine and other lower polyhydric alcohols from the hydrogenolysis products of saccharides

Country Status (1)

Country Link
GB (1) GB992165A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008057317A1 (en) * 2006-10-27 2008-05-15 Archer-Daniels-Midland Company Processes for isolating or purifying propylene glycol, ehtylene glycol and products produced therefrom

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008057317A1 (en) * 2006-10-27 2008-05-15 Archer-Daniels-Midland Company Processes for isolating or purifying propylene glycol, ehtylene glycol and products produced therefrom
US8143458B2 (en) 2006-10-27 2012-03-27 Archer Daniels Midland Company Processes for isolating or purifying propylene glycol, ethylene glycol and products produced therefrom
CN101528651B (en) * 2006-10-27 2014-03-05 阿彻-丹尼尔斯-米德兰公司 Processes for isolating or purifying propylene glycol, ehtylene glycol and products produced therefrom

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