GB2548137A - Production equipment (I) for production of a caprolactone - Google Patents

Production equipment (I) for production of a caprolactone Download PDF

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Publication number
GB2548137A
GB2548137A GB1604113.9A GB201604113A GB2548137A GB 2548137 A GB2548137 A GB 2548137A GB 201604113 A GB201604113 A GB 201604113A GB 2548137 A GB2548137 A GB 2548137A
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GB
United Kingdom
Prior art keywords
production equipment
equipment according
hydrogen peroxide
section
peracetic acid
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.)
Withdrawn
Application number
GB1604113.9A
Other versions
GB201604113D0 (en
Inventor
John Mayo William
David Edwardson Neil
Orrell Antony
Charles Hazlehurst Jeremy
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.)
Perstorp AB
Original Assignee
Perstorp AB
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 Perstorp AB filed Critical Perstorp AB
Priority to GB1604113.9A priority Critical patent/GB2548137A/en
Publication of GB201604113D0 publication Critical patent/GB201604113D0/en
Priority to EP17763649.5A priority patent/EP3426646A4/en
Priority to PCT/SE2017/000019 priority patent/WO2017155442A1/en
Publication of GB2548137A publication Critical patent/GB2548137A/en
Withdrawn legal-status Critical Current

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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
    • B01J19/24—Stationary reactors without moving elements inside
    • B01J19/2415—Tubular reactors
    • B01J19/242—Tubular reactors in series
    • 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
    • B01J19/24—Stationary reactors without moving elements inside
    • 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
    • B01J19/24—Stationary reactors without moving elements inside
    • B01J19/2415—Tubular reactors
    • B01J19/243—Tubular reactors spirally, concentrically or zigzag wound
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D313/00—Heterocyclic compounds containing rings of more than six members having one oxygen atom as the only ring hetero atom
    • C07D313/02—Seven-membered rings
    • C07D313/04—Seven-membered rings not condensed with other rings
    • 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
    • B01J2219/00002—Chemical plants
    • B01J2219/00004—Scale aspects
    • B01J2219/00006—Large-scale industrial plants
    • 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
    • B01J2219/00002—Chemical plants
    • B01J2219/00027—Process aspects
    • B01J2219/0004—Processes in series
    • 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
    • B01J2219/00076—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements inside the reactor
    • B01J2219/00083—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
    • B01J2219/00051—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
    • B01J2219/00101—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
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00105—Controlling the temperature by indirect heating or cooling employing heat exchange fluids part or all of the reactants being heated or cooled outside the reactor while recycling
    • B01J2219/0011—Controlling the temperature by indirect heating or cooling employing heat exchange fluids part or all of the reactants being heated or cooled outside the reactor while recycling involving reactant liquids

Abstract

A reactor for producing caprolactone comprising reaction of peracetic acid (also known as ethaneperoxoic acid, peroxyacetic acid, acetic peroxide, acetyl hydroperoxide, proxitane) and cyclohexanone, is preferably split into a first section wherein peracetic acid is produced, a second section wherein caprolactone is produced and a third section wherein yielded caprolactone product is purified.

Description

PRODUCTION EQUIPMENT (I) FOR PRODUCTION OF A CAPROLACTONE
The present invention refers to a production equipment for production of a caprolactone, such as ε-caprolactone, by reaction between peracetic acid and cyclohexanone in a so called Baeyer-Villiger reaction.
The first step in a caprolactone synthesis is typically the generation of peracetic acid, fiOm acetic acid and hydrogen peroxide, used to oxidise cyclohexanone according to reaction scheme (I) below:
Yielded peracetic acid reacts with cyclohexanone to yield caprolactone and acetic acid according to reaction scheme (II) below:
The present invention is directed to a production equipment for production of a caprolactone by the above disclosed reactions, said equipment being split into a first section wherein peracetic acid is produced, a second section wherein caprolactone is produced, and a third section wherein yielded product is purified.
Said first section (Fig. 1) comprises a hydrogen peroxide inlet (1), a concentration unit (2) wherein hydrogen peroxide is concentrated into high strength hydrogen peroxide, a high strength hydrogen peroxide tank (3), a measure unit (4) wherein said high strength hydrogen peroxide and acetic add are measured before being mixed and cooled in a premix unit (5), and peracetic acid stills (6) wherein said high strength hydrogen peroxide and said acetic acid is reacted in the presence of a catalyst, such as sulphuric acid, and fractionated by distilling off yielded peracetic acid, unreacted acetic acid and water and holding back unreacted peroxide and catalyst. The first section also comprises a storage tank in which yielded peracetic acid can be stored after addition of a stabiliser, such as dipicolinic acid, prior to said second section (Fig. 2).
Said concentration unit (2) comprises, in preferred embodiments of said first section (Fig. 1), a series of 3 peroxide concentrators (2a, 2b and 2c) being for instance film evaporators having large surface areas. In likewise preferred embodiments said premix unit (5) comprises a series of 3 agitated vessels (5a, 5b and 5c). 60-70%, such as 70%, hydrogen peroxide is in said concentration unit (2), at a pressure of for instance 20-45 mbar and at a temperature of 50-60°C, such as 55 +/-2°C, concentrated into high strength peroxide comprising at least 80%, such as at least 85%, hydrogen peroxide. The peracetic acid stills (6) are in said preferred embodiments suitably operated at 70-150, such as 110-130, mbar and yielded peracetic acid typically has a peracetic acid concentration of 30-55%.
Said second section (Fig. 2) comprises a peracetic acid inlet (7), a cyclohexanone inlet (8), a first reactor (9) and a second reactor (10), wherein said peracetic acid and said cyclohexanone is reacted, followed by a set of post-reaction tubular reactors (11), a product cooler (12), wherein yielded reaction mixture is cooled, and an outlet (13) for further feeding of yielded reaction mixture to said third section (Fig. 3). Said first reactor (9) and said second reactor (10) are, in preferred embodiments, made of glass and equipped with internal water cooled glass coils controlling reaction temperature and thus reaction rate. Said first reactor (9) comprises preferably a series of 4 reactor units (9a, 9b, 9c and 9d) while said second reactor (10) preferably comprises 2 reactor units (10a and 10b). Said set of post-reaction tubular reactors (11) is, in likewise preferred embodiments, water sprayed to control the reaction temperature. Said second section may in further preferred embodiments be equipped with a safety system, protecting against runaway reactions, dumping the reaction mixture.
Said third section (Fig. 3) comprises an inlet (14) for feeding of yielded reaction mixture, a pre-heater (15) for heating the reaction mixPu-e to a predetermined temperature, such as 50 +/-5°C, a stripper (16) wherein water is removed, and a finctionator (17) wherein light ends and unreacted raw materials are removed through an outlet (18). The fi’actionated product is fed to a tank (19) and subsequently to a thin film evaporator (20) via a pre-heater (21) and finally to a distillation column (22), operating at for instance 0.5-20, such as 5-10, mbar, comprising separation steps yielding purified caprolactone.
The production equipment according to the present invention may optionally and additionally comprise a fourth section (Fig. 4) comprising a tank (23) comprising unreacted raw materials and li^t ends which products are sq>arated in at least a primary (24), a secondary (25) and a tertiary (26) distillation column, whereby cyclohexanone and acetic acid are recovered and optionally recycled. Said primary distillation colunm (24) is, in preferred embodiments, operated at for instance atmospheric pressure, whereby an azeotrope of water and cyclohexanone is distilled off and separated in a decanter (27). Acetic acid is, in said secondary distillation column (25), which suitably operates at for instance a temperature of 110-120°C, distilled off and sent to a storage tank. Cyclohexanone is, under for instance vacuum condition, purified in said tertiary distillation column (26) and remains are sent for disposal.
While particular embodiments of the invention have been shown, it will be imderstood, of course, that the invention is not limited thereto since many modifications may be made, and it is, therefore, contemplated to cover by the appended claims any such modifications as fall within the true spirit and scope of the invention. These and other objects will be more fully imderstood fiOm appended drawings, wherein like reference numerals have been applied to like parts throughout the various figures and wherein:
Figure 1: Schemes an embodiment of said first section of the claimed production equipment.
Figure 2: Schemes an embodiment of said second section of the claimed production equipment.
Figure 3: Schemes an embodiment of said third section of the claimed production equipment, and
Figure 4: Schemes an embodiment of said optional fourth section of the claimed production equipment.

Claims (23)

1. A production equipment for production of a caprolactone by reaction between peracetic acid, produced from acetic acid and hydrogen peroxide, and cyclohexanone, said equipment being split into a first section wherein peracetic acid is produced, a second section wherein caprolactone is produced, and a third section wherein yielded product is purified; said first section comprises a hydrogen peroxide inlet (1), a concentration unit (2) wherein hydrogen peroxide is concentrated into high strength hydrogen peroxide, a high strength hydrogen peroxide tank (3), a measure unit (4) wherein said high strength hydrogen peroxide and acetic acid are measmed before being mixed and cooled in a premix unit (5), and peracetic acid stills (6) wherein said high strength hydrogen peroxide and said acetic acid are reacted in the presence of sulphuric acid as catalyst and fractionated by distilling off yielded peracetic acid, unreacted acetic acid and water and holding back vinreacted peroxide and sulphuric acid, and a storage tank in which yielded peracetic acid is stored after addition of a stabiliser and prior to said second section; said second section comprises a peracetic acid inlet (7), a cyclohexanone inlet (8), a first reactor (9) and a second reactor (10), wherein said peracetic acid and said cyclohexanone are reacted, followed by a set of post-reaction tubular reactors (11), a product cooler (12) wherein yielded reaction mixture is cooled, and an outlet (13) for further feeding of yielded reaction mixture to said third section; and said third section comprises an inlet (14) for feeding of yielded reaction mixture, a pre-heater (15), a stripper (16) wherein water is removed, a fractionator (17) wherein light ends and unreacted raw materials are removed through an outlet (18), a tank (19), a pre-heater (21) and a thin film evaporator (20) to which said fractionated product is successively fed, and a distillation colunrn (22) for performing separation steps yielding purified caprolactone.
2. The production eqmpment according to Claim 1, wherein said concentration unit (2) comprises a series of 3 peroxide concentrators (2a, 2b and 2c).
3. The production equipment according to Claim 2, wherein said peroxide concentrators (2a, 2b and 2c) are film evaporators having large surface areas.
4. The production equipment according to any of Claims 1-3, wherein said premix unit (5) comprises a series of 3 agitated vessels (5a, 5b and 5c).
5. The production equipment according to any of Claims 1-4, wherein 60-75% hydrogen peroxide is concentrated into high strength peroxide comprising at least 80% hydrogen peroxide.
6. The production equipment according to any of Claims 1-5, wherein 60-75% hydrogen peroxide is concentrated at 20-45 mbar.
7. The production equipment according to any of Claims 1-6, wherein 60-75% hydrogen peroxide is concentrated at 50-60°C.
8. The production equipment according to any of Claims 1-7, wherein 70% hydrogen peroxide is concentrated at a temperature of 55 +/-2°C into high strength peroxide comprising at least 85% hydrogen peroxide.
9. The production equipment according to any of Claims 1-8, wherein yielded peracetic acid has a peracetic acid concentration of 30-55%.
10. The production equipment according to any of Claims 1-9, wherein said peracetic acid stills (6) are operated at 70-150 mbar.
11. The production equipment according to any of Claims 1-10, wherein said peracetic acid stills (6) are operated at 110-130 mbar.
12. The production equipment according to any of Claims 1-11, wherein said first reactor (9) and said second reactor (10) are made of glass and equipped with internal water cooled glass coils controlling reaction temperature and thus reaction rate.
13. The production equipment according to any of Claims 1-12, wherein said first reactor (9) comprises a series of 4 reactor units (9a, 9b, 9c and 9d).
14. The production equipment according to any of Claims 1-13, wherein said second reactor (10) comprises 2 reactor units (10a and 10b).
15. The production equipment according to any of Claims 1-14, wherein said set of postreaction tubular reactors (11) is water sprayed to control reaction temperature.
16. The production equipment according to any of Claims 1-15, wherein said second section (Fig. 2) is equipped with a safety system, protecting against runaway reactions, dumping the reaction mixture.
17. The production equipment according to any of Claims 1-16, wherein said pre-heater (15) heats said reaction mixture to 50 +/- 5°C.
18. The production equipment according to any of Claims 1-17, wherein said distillation colunm (22) operates at a pressure of 0.5-20 mbar.
19. The production equipment according to any of Claims 1-18, wherein said distillation column (22) operates at a pressure of 5-10 mbar.
20. The production equipment according to any of Claims 1-19, which additionally comprises a fourth section comprising a tank (23) comprising unreacted raw materials and light ends which products are separated in at least a primary (24), a secondary (25) and a tertiary (26) distillation column, whereby cyclohexanone and acetic acid are recovered and optionally recycled.
21. The production equipment according to Claim 20, wherein said primary distillation column (24) operates at atmospheric pressure and wherein an azeotrope of water and cyclohexanone is distilled off and separated in a decanter (27).
22. The production equipment according to Claim 20 or Claim 21, wherein said secondary distillation column (25) operates at a temperature of 110-120°C and wherein acetic acid is distilled off and sent to a storage tank.
23. The production equipment according to any of Claims 20-22, wherein said tertiary distillation column (26) purifies cyclohexanone imder vacuum condition and wherein remains are sent for disposal.
GB1604113.9A 2016-03-09 2016-03-09 Production equipment (I) for production of a caprolactone Withdrawn GB2548137A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB1604113.9A GB2548137A (en) 2016-03-09 2016-03-09 Production equipment (I) for production of a caprolactone
EP17763649.5A EP3426646A4 (en) 2016-03-09 2017-03-03 Production equipment for production of a caprolactone
PCT/SE2017/000019 WO2017155442A1 (en) 2016-03-09 2017-03-03 Production equipment for production of a caprolactone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1604113.9A GB2548137A (en) 2016-03-09 2016-03-09 Production equipment (I) for production of a caprolactone

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GB201604113D0 GB201604113D0 (en) 2016-04-20
GB2548137A true GB2548137A (en) 2017-09-13

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GB (1) GB2548137A (en)
WO (1) WO2017155442A1 (en)

Cited By (1)

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CN109503540A (en) * 2017-09-14 2019-03-22 黎明化工研究设计院有限责任公司 A kind of method preparing 6-caprolactone and its continuous production device

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CN108003130A (en) * 2017-12-22 2018-05-08 黎明化工研究设计院有限责任公司 The integrated apparatus and its application method of a kind of 6-caprolactone synthesis and concentration
DE102019103120A1 (en) 2019-02-08 2020-08-13 Tesa Se UV-curable adhesive tape and method for sheathing elongated material, in particular cables
DE102019103123A1 (en) 2019-02-08 2020-08-13 Tesa Se Thermally softenable adhesive tape and method for sheathing elongated goods, in particular cables
DE102019103122A1 (en) 2019-02-08 2020-08-13 Tesa Se Moisture-curable adhesive tape and method for sheathing elongated goods, in particular cables

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CN104003972A (en) * 2014-04-28 2014-08-27 安徽红太阳新材料有限公司 Method for preparing caprolactone
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CN109503540A (en) * 2017-09-14 2019-03-22 黎明化工研究设计院有限责任公司 A kind of method preparing 6-caprolactone and its continuous production device
CN109503540B (en) * 2017-09-14 2023-05-05 黎明化工研究设计院有限责任公司 Method for preparing epsilon-caprolactone and continuous production device thereof

Also Published As

Publication number Publication date
WO2017155442A1 (en) 2017-09-14
EP3426646A4 (en) 2019-09-04
GB201604113D0 (en) 2016-04-20
EP3426646A1 (en) 2019-01-16

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