GB949370A - Method of absorbing or dispersing and reacting gases in liquids - Google Patents

Method of absorbing or dispersing and reacting gases in liquids

Info

Publication number
GB949370A
GB949370A GB4765/60A GB476560A GB949370A GB 949370 A GB949370 A GB 949370A GB 4765/60 A GB4765/60 A GB 4765/60A GB 476560 A GB476560 A GB 476560A GB 949370 A GB949370 A GB 949370A
Authority
GB
United Kingdom
Prior art keywords
liquid
circulating liquid
circulating
reacting
ring pump
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
GB4765/60A
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.)
Wacker Chemie AG
Original Assignee
Wacker Chemie 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 Wacker Chemie AG filed Critical Wacker Chemie AG
Publication of GB949370A publication Critical patent/GB949370A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/29—Mixing systems, i.e. flow charts or diagrams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0006—Controlling or regulating processes
    • B01J19/0013—Controlling the temperature of the process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
    • B01J2219/0009—Coils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00162—Controlling or regulating processes controlling the pressure

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

Organic compounds are produced by reacting gases with or while in contact with a liquid circulating in a liquid ring pump (see Division B1). Acetic anhydride is obtained by reacting ketane in the form of a gas obtained by the thermal cracking of acetic acid with acetic acid, the gas being sucked into a liquid ring pump under a vacuum of 33TORR and which contains a circulating mixture of acetic acid and acetic anhydride maintained at about 30 DEG C. by cooling. Fresh acetic acid is added to the circulating liquid to maintain 13% acetic acid in the circulating liquid and some circulating liquid is withdrawn continuously to remove the acetic anhydride formed. Methyl-ketene and iso-propyl-ketene may be similarly reacted with propionic and iso-valeric acids to produce propionic and iso-valeric anhydride respectively. In another example a liquid ring pump is used to react methyl-ketene with chlorine in a -chloropropionyl chloride cooled to 0 DEG C. as circulating liquid. In the production of ethylene bromide, ethylene and bromine vapour were sucked into a liquid ring pump under a vacuum of 85TORR and passed into a circulating liquid consisting of hexachlorobutadiene maintained at about 15 DEG C. Hexachlorobutadiene may be added to the circulating liquid to replace that withdrawn together with the ethylene bromide or ultimately the ethylene bromide may constitute the circulating liquid. b -Aminocrotonic acid ethyl ester is made by reacting ammonia with ethyl acetoacebate in a liquid ring pump containing b -aminocrotonic acid ethyl ester maintained at 35 DEG C. as circulating liquid, some of the circulating liquid being withdrawn continuously. In the production of paraldehyde, acetaldehyde vapour is sucked into a liquid ring pump in which paraldehyde maintained at 20 DEG C. is circulated and to which 1% of sulphuric acid has been added as a catalyst. Freshly formed paraldehyde is run off continuously.ALSO:In a method of absorbing or dispersing and reacting gases in liquids, the absorbing or dispersing and reacting is carried out simultaneously in a liquid ring pump, the circulating liquid of which contains the reactants. The circulating liquid may be a reaction product or an inert liquid of low vapour pressure in which the reactants are present in suspension, emulsion or solution. The gas or gases being reacted may be sucked into the pump under a vacuum of e.g. 85 TORR. Catalysts may be added to the circulating liquid and the liquid may be heated or cooled. The reaction product may be withdrawn continuously at a rate corresponding to the rate of formation. The method may be used for reacting gases with gases or gases with liquids. Examples of reactions carried out by the method include producing acetic anhydride from ketone and acetic acid, reacting organic compounds with ammonia or halogens and polymerizing acetaldehyde in the presence of sulphuric acid as a catalyst (see Division C2).
GB4765/60A 1959-02-13 1960-02-10 Method of absorbing or dispersing and reacting gases in liquids Expired GB949370A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEW25035A DE1076090B (en) 1959-02-13 1959-02-13 Process for the reaction of gases in liquids

Publications (1)

Publication Number Publication Date
GB949370A true GB949370A (en) 1964-02-12

Family

ID=7597990

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4765/60A Expired GB949370A (en) 1959-02-13 1960-02-10 Method of absorbing or dispersing and reacting gases in liquids

Country Status (5)

Country Link
BE (1) BE587579A (en)
CH (1) CH385797A (en)
DE (1) DE1076090B (en)
FR (1) FR1246551A (en)
GB (1) GB949370A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2642986A1 (en) * 1989-02-15 1990-08-17 Carboxyque Francaise Process and plant for producing a mixture of "freon" and carbon dioxide
WO2006008521A1 (en) * 2004-07-22 2006-01-26 The Boc Group Plc Gas abatement

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5154907A (en) * 1986-10-15 1992-10-13 The Carborundum Company Process for the continuous production of high purity, ultra-fine, aluminum nitride powder by the carbo-nitridization of alumina
DE4001028A1 (en) * 1990-01-16 1991-07-18 Hoechst Ag PROCESS FOR THE PREPARATION OF NITROSYL SULFURIC ACID

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE411637C (en) * 1925-04-29 Hans Eicheler Process for carrying out reactions and mixtures of gases
DE429779C (en) * 1921-10-26 1926-06-04 Hans Eicheler Process for carrying out reactions and mixtures of gaseous or liquid bodies
DE446163C (en) * 1922-11-15 1927-06-24 Borsig G M B H A Device for triggering a chemical process in a liquid by means of a gas with the aid of a mixed gas liquid lifter (mammoth pump)
DE498136C (en) * 1928-08-03 1930-05-17 Schering Kahlbaum Ag Reaction vessel
DE1039996B (en) * 1956-12-01 1958-10-02 Hoechst Ag Process for removing clouds of mist from gases or gas mixtures

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2642986A1 (en) * 1989-02-15 1990-08-17 Carboxyque Francaise Process and plant for producing a mixture of "freon" and carbon dioxide
WO2006008521A1 (en) * 2004-07-22 2006-01-26 The Boc Group Plc Gas abatement
JP4864887B2 (en) * 2004-07-22 2012-02-01 エドワーズ リミテッド Gas relaxation device and method
US8647580B2 (en) 2004-07-22 2014-02-11 Edwards Limited Gas abatement

Also Published As

Publication number Publication date
CH385797A (en) 1964-12-31
FR1246551A (en) 1960-11-18
BE587579A (en)
DE1076090B (en) 1960-02-25

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