GB897473A - Method and apparatus for the manufacture of 2:2-dipyridyl - Google Patents

Method and apparatus for the manufacture of 2:2-dipyridyl

Info

Publication number
GB897473A
GB897473A GB51361A GB51361A GB897473A GB 897473 A GB897473 A GB 897473A GB 51361 A GB51361 A GB 51361A GB 51361 A GB51361 A GB 51361A GB 897473 A GB897473 A GB 897473A
Authority
GB
United Kingdom
Prior art keywords
pyridine
catalyst
dipyridyl
unreacted
forced
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
GB51361A
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.)
Orica Ltd
Original Assignee
Imperial Chemical Industries of Australia and New Zealand Ltd
ICI Australia 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
Priority claimed from AU56579/60A external-priority patent/AU245072B2/en
Application filed by Imperial Chemical Industries of Australia and New Zealand Ltd, ICI Australia Ltd filed Critical Imperial Chemical Industries of Australia and New Zealand Ltd
Publication of GB897473A publication Critical patent/GB897473A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
    • B01J8/0285—Heating or cooling the reactor
    • 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
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008—Controlling the process
    • B01J2208/00017—Controlling the temperature
    • B01J2208/00106—Controlling the temperature by indirect heat exchange
    • B01J2208/00168—Controlling the temperature by indirect heat exchange with heat exchange elements outside the bed of solid particles
    • B01J2208/00203—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
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008—Controlling the process
    • B01J2208/00017—Controlling the temperature
    • B01J2208/00106—Controlling the temperature by indirect heat exchange
    • B01J2208/00168—Controlling the temperature by indirect heat exchange with heat exchange elements outside the bed of solid particles
    • B01J2208/00247—Reflux columns
    • 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
    • B01J2219/19—Details relating to the geometry of the reactor
    • B01J2219/194—Details relating to the geometry of the reactor round
    • B01J2219/1941—Details relating to the geometry of the reactor round circular or disk-shaped
    • B01J2219/1942—Details relating to the geometry of the reactor round circular or disk-shaped spherical

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Pyridine Compounds (AREA)

Abstract

<PICT:0897473/III/1> <PICT:0897473/III/2> Apparatus for the production of 2,21-dipyridyl comprises in Figs. 1 and 2 a boiler 3 opening into an insulated casing 5 which in turn opens into a condenser 6 open to the atmosphere. In Fig. 1 a liquid-permeable sintered glass disc 8 extends across a tubular reaction vessel 7 which rest coaxially within 5; a side tube 9 opens into the space between 8 and the end of 7 to extend upwardly along part of the length of 7; Raney nickel catalyst 10 covered by pyridine 11 is placed in 7 to rest on 8. In operation a further quantity of pyridine 12 is boiled in 3, the vapour passes up through 5 to the condenser 6 in which it condenses and falls back through 7; some of the pyridine is forced through the catalyst 10 and the reaction products together with unreacted pyridine are forced upwardly through 9 and fall back into 3. In Fig. 2 a tube 13 closed at the lower end rests within 5 and is partially filled with catalyst 14 and then filled up with pyridine 15; a funnel 16 is inserted axially into 14; the pyridine 12 is boiled in 3 and the vapour passes up to 6 where it condenses and falls back into 16; some of the pyridine is forced through the catalyst where it reacts and the 2,21-dipyridyl and unreacted pyridine are carried into 3.ALSO:2,21-Dypyridyl is produced by maintaining Raney nickel in contact with pyridine at elevated temperatures, the products including 2,21-dipyridyl being removed from contact with the catalyst continuously or intermittently by displacement with pyridine. The unreacted pyridine may be separated from the product, e.g. by distillation, and recycled to the reactor. Preferably the pyridine in contact with the catalyst is maintained at temperatures above 80 DEG C. The process may be carried out, for example, by percolating pyridine near its boiling point through a porous bed of dry Raney nickel catalyst so that the 2,21-dipyridyl is continuously removed by displacement by pyridine or the liquid pyridine near its boiling point is passed upwardly through a bed of catalyst so that the 2,21-dipyridyl and the unreacted pyridine overflow from the top of the receptacle containing the catalyst. Details of the apparatus for carrying out the process are given.
GB51361A 1960-01-18 1961-01-05 Method and apparatus for the manufacture of 2:2-dipyridyl Expired GB897473A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU56579/60A AU245072B2 (en) 1960-01-18 Method and apparatus forthe manufacture of 2, 2'dipyridyl

Publications (1)

Publication Number Publication Date
GB897473A true GB897473A (en) 1962-05-30

Family

ID=3742152

Family Applications (1)

Application Number Title Priority Date Filing Date
GB51361A Expired GB897473A (en) 1960-01-18 1961-01-05 Method and apparatus for the manufacture of 2:2-dipyridyl

Country Status (4)

Country Link
CH (1) CH410947A (en)
ES (1) ES264047A1 (en)
GB (1) GB897473A (en)
SE (1) SE311158B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2230560A1 (en) * 1971-07-15 1973-02-01 Ici Ltd METHOD FOR PRODUCING 2,2'-BIPYRIDYLENE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2230560A1 (en) * 1971-07-15 1973-02-01 Ici Ltd METHOD FOR PRODUCING 2,2'-BIPYRIDYLENE

Also Published As

Publication number Publication date
SE311158B (en) 1969-06-02
ES264047A1 (en) 1961-04-01
CH410947A (en) 1966-04-15

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