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GB1029172A - Process and apparatus for the polymerization of ethylene - Google Patents

Process and apparatus for the polymerization of ethylene

Info

Publication number
GB1029172A
GB1029172A GB1190463A GB1190463A GB1029172A GB 1029172 A GB1029172 A GB 1029172A GB 1190463 A GB1190463 A GB 1190463A GB 1190463 A GB1190463 A GB 1190463A GB 1029172 A GB1029172 A GB 1029172A
Authority
GB
United Kingdom
Prior art keywords
reactor
pressure
valve
ethylene
reduction
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
GB1190463A
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.)
Halcon International Inc
Original Assignee
Halcon International 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 Halcon International Inc filed Critical Halcon International Inc
Publication of GB1029172A publication Critical patent/GB1029172A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/041—Function-oriented details
    • G05B19/0415—Function-oriented details adapting phase duration according to measured parameters
    • 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
    • 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
    • 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
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • 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
    • B01J2219/00054—Controlling or regulating the heat exchange system
    • B01J2219/00056—Controlling or regulating the heat exchange system involving measured parameters
    • B01J2219/00058—Temperature measurement
    • B01J2219/00063—Temperature measurement of the reactants
    • 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
    • B01J2219/00054—Controlling or regulating the heat exchange system
    • B01J2219/00056—Controlling or regulating the heat exchange system involving measured parameters
    • B01J2219/00065—Pressure measurement
    • 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
    • B01J2219/00094—Jackets
    • 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
    • B01J2219/00159—Controlling the temperature controlling multiple zones along the direction of flow, e.g. pre-heating and after-cooling
    • 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)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Polymerisation Methods In General (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

<PICT:1029172/C3/1> In a process for the polymerization of ethylene, wherein a reaction mixture is subjected to recurrent flow pulses, a degree of fouling factor is derived and the interval between flow pulses controlled accordingly. As shown, a mixture of ethylene and initiator is fed via line 11 to a preheating zone 12 and a reaction zone 10a of an elongated tube reactor 10. The polymer formed and unreacted ethylene are cooled on a zone 13 and discharged through a pressure control valve 14. The reactor 10 is provided with pressurized water to jackets 9a-9c. During polymerization, a polymer build-up occurs in the tube 10 with consequent variation of flow-rate, reactor heat transfer rate and product quantity. The extent of the build-up is determined by a thermocouple 18 in a critical section of the reactor where the reactor temperature is above 400 DEG F. The thermocouple is connected through a temperature controller 20 to a computer 22 carrying out the integration of temperature against time in accordance with a predetermined equation during a sudden reduction of the pressure in the reactor caused by opening an outlet valve 14 through a valve position control 38. The pressure reduction is maintained for a predetermined period and followed by the closure of valve 14 and the restoration of the pressure in the reactor to a steady state valve at which it is controlled by a pressure controller 36 responsive to the difference between the reactor pressure, as sensed by a strain-gauge 24 and a preset value from a comparator 40. The cycle of operations is controlled by a timer 26 actuating a selector switch 28 and the period between pressure reductions is adjusted by the computer 22 so that with an increase of the integrated temperature value between cycles the period is increased and vice versa. When the adjustment is unsuccessful the succeeding periods become too short and an alarm is triggered so that the operator shuts down the plant and cleans it with a solvent. In a modification, the integrated temperature value controls the reduction in reactor pressure. In a further modification a plurality of thermocouples and commuters are employed and control the timer through a selector responsive to the highest integrated temperature value.
GB1190463A 1962-04-11 1963-03-26 Process and apparatus for the polymerization of ethylene Expired GB1029172A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US18668662A 1962-04-11 1962-04-11

Publications (1)

Publication Number Publication Date
GB1029172A true GB1029172A (en) 1966-05-11

Family

ID=22685907

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1190463A Expired GB1029172A (en) 1962-04-11 1963-03-26 Process and apparatus for the polymerization of ethylene

Country Status (8)

Country Link
BE (1) BE630177A (en)
CH (1) CH440713A (en)
DE (1) DE1520804A1 (en)
ES (1) ES286993A1 (en)
GB (1) GB1029172A (en)
LU (1) LU43443A1 (en)
NL (1) NL291441A (en)
SE (1) SE326556B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2508284A1 (en) * 1975-02-26 1976-09-09 Ruhrchemie Ag PROCESS FOR THE POLYMERIZATION OF AETHYLENE
US11235304B2 (en) * 2018-03-27 2022-02-01 Kaneka Corporation Flow reactor and manufacturing facility comprising the flow reactor
GB2559583B (en) * 2017-02-09 2022-04-20 Phycofeeds Ltd Hydrothermal liquefaction reactor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2508284A1 (en) * 1975-02-26 1976-09-09 Ruhrchemie Ag PROCESS FOR THE POLYMERIZATION OF AETHYLENE
GB2559583B (en) * 2017-02-09 2022-04-20 Phycofeeds Ltd Hydrothermal liquefaction reactor
US11235304B2 (en) * 2018-03-27 2022-02-01 Kaneka Corporation Flow reactor and manufacturing facility comprising the flow reactor

Also Published As

Publication number Publication date
ES286993A1 (en) 1963-12-01
DE1520804A1 (en) 1970-04-09
BE630177A (en)
SE326556B (en) 1970-07-27
LU43443A1 (en) 1964-09-29
NL291441A (en)
CH440713A (en) 1967-07-31

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