FR2410504A1 - Safety control in chemical reactor carrying out oxidations - comprises oxygen concn. monitoring in gaseous phase and nitrogen injections if set concn. is reached - Google Patents

Safety control in chemical reactor carrying out oxidations - comprises oxygen concn. monitoring in gaseous phase and nitrogen injections if set concn. is reached

Info

Publication number
FR2410504A1
FR2410504A1 FR7736584A FR7736584A FR2410504A1 FR 2410504 A1 FR2410504 A1 FR 2410504A1 FR 7736584 A FR7736584 A FR 7736584A FR 7736584 A FR7736584 A FR 7736584A FR 2410504 A1 FR2410504 A1 FR 2410504A1
Authority
FR
France
Prior art keywords
concn
gaseous phase
increase
reached
monitoring
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.)
Granted
Application number
FR7736584A
Other languages
French (fr)
Other versions
FR2410504B1 (en
Inventor
Jacques Roussel
Michel Granger
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.)
Air Liquide SA
Original Assignee
Air Liquide SA
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 Air Liquide SA filed Critical Air Liquide SA
Priority to FR7736584A priority Critical patent/FR2410504A1/en
Publication of FR2410504A1 publication Critical patent/FR2410504A1/en
Application granted granted Critical
Publication of FR2410504B1 publication Critical patent/FR2410504B1/fr
Granted 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
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
    • B01J8/1809—Controlling 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
    • B01J19/0006—Controlling or regulating processes
    • B01J19/002—Avoiding undesirable reactions or side-effects, e.g. avoiding explosions, or improving the yield by suppressing side-reactions
    • 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
    • B01J2208/00628—Controlling the composition of the reactive mixture
    • 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
    • B01J2219/00245—Avoiding undesirable reactions or side-effects
    • B01J2219/00259—Preventing runaway of the chemical reaction
    • B01J2219/00263—Preventing explosion of the chemical mixture

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

Method comprises measuring continuously the concn. of O2 in the gaseous phase and introducing a flow of gaseous N2 through an inlet at the level of the gaseous phase when the concn. of O2 reaches predetermined value. When the oxidising agent is air enriched in O2, the degree of enrichment is pref. reduced, in addn. to N2 being introduced. The method prevents all risks of inflammation and explosion in a reactor, more partic. a reactor working under severe conditions of pressure and temp. Such risks can arise through: stoppage of the chemical reaction e.g. by poisoning of a catalyst; increase in O2 concn. before the reaction starts; failure of feed of liq. reactants; accidental increase in flow of oxidising agent; a runaway reaction resulting in temp. increase and increase of the molar fraction of organic vapour in the vapour phase.
FR7736584A 1977-12-05 1977-12-05 Safety control in chemical reactor carrying out oxidations - comprises oxygen concn. monitoring in gaseous phase and nitrogen injections if set concn. is reached Granted FR2410504A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7736584A FR2410504A1 (en) 1977-12-05 1977-12-05 Safety control in chemical reactor carrying out oxidations - comprises oxygen concn. monitoring in gaseous phase and nitrogen injections if set concn. is reached

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7736584A FR2410504A1 (en) 1977-12-05 1977-12-05 Safety control in chemical reactor carrying out oxidations - comprises oxygen concn. monitoring in gaseous phase and nitrogen injections if set concn. is reached

Publications (2)

Publication Number Publication Date
FR2410504A1 true FR2410504A1 (en) 1979-06-29
FR2410504B1 FR2410504B1 (en) 1980-08-22

Family

ID=9198452

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7736584A Granted FR2410504A1 (en) 1977-12-05 1977-12-05 Safety control in chemical reactor carrying out oxidations - comprises oxygen concn. monitoring in gaseous phase and nitrogen injections if set concn. is reached

Country Status (1)

Country Link
FR (1) FR2410504A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0091015A2 (en) * 1982-04-01 1983-10-12 Sterling Drug Inc. Method of operating pure oxygen wet oxidation systems
EP0681866A2 (en) * 1994-04-15 1995-11-15 Messer Griesheim Gmbh Process for rendering reactors inert
EP0700715A3 (en) * 1994-09-12 1996-04-17 Messer Griesheim Gmbh
US5582715A (en) * 1992-04-16 1996-12-10 Rpc Waste Management Services, Inc. Supercritical oxidation apparatus for treating water with side injection ports
EP0995490A2 (en) * 1998-10-20 2000-04-26 Praxair Technology, Inc. Ballast gas use in liquid phase oxidations
EP2596861A1 (en) * 2011-11-22 2013-05-29 Linde Aktiengesellschaft Integrated inertisation method and inertisation system

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ211078A (en) * 1984-03-19 1987-08-31 Bristol Myers Co Oral dosage form of etoposide
US5591415A (en) 1994-01-27 1997-01-07 Rpc Waste Management Services, Inc. Reactor for supercritical water oxidation of waste
US5552039A (en) 1994-07-13 1996-09-03 Rpc Waste Management Services, Inc. Turbulent flow cold-wall reactor
US5755974A (en) 1994-08-01 1998-05-26 Rpc Waste Management Services, Inc. Method and apparatus for reacting oxidizable matter with a salt
US5551472A (en) 1994-08-01 1996-09-03 Rpc Waste Management Services, Inc. Pressure reduction system and method
US5620606A (en) 1994-08-01 1997-04-15 Rpc Waste Management Services, Inc. Method and apparatus for reacting oxidizable matter with particles
US6017460A (en) 1996-06-07 2000-01-25 Chematur Engineering Ab Heating and reaction system and method using recycle reactor

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0091015A2 (en) * 1982-04-01 1983-10-12 Sterling Drug Inc. Method of operating pure oxygen wet oxidation systems
EP0091015A3 (en) * 1982-04-01 1984-06-06 Sterling Drug Inc. Method of operating pure oxygen wet oxidation systems
US5582715A (en) * 1992-04-16 1996-12-10 Rpc Waste Management Services, Inc. Supercritical oxidation apparatus for treating water with side injection ports
EP0681866A2 (en) * 1994-04-15 1995-11-15 Messer Griesheim Gmbh Process for rendering reactors inert
EP0681866A3 (en) * 1994-04-15 1996-04-17 Messer Griesheim Gmbh Process for rendering reactors inert.
EP0700715A3 (en) * 1994-09-12 1996-04-17 Messer Griesheim Gmbh
EP0995490A2 (en) * 1998-10-20 2000-04-26 Praxair Technology, Inc. Ballast gas use in liquid phase oxidations
EP0995490A3 (en) * 1998-10-20 2000-07-12 Praxair Technology, Inc. Ballast gas use in liquid phase oxidations
US6215027B1 (en) 1998-10-20 2001-04-10 Praxair Technology, Inc. Ballast gas use in liquid phase oxidation
EP2596861A1 (en) * 2011-11-22 2013-05-29 Linde Aktiengesellschaft Integrated inertisation method and inertisation system

Also Published As

Publication number Publication date
FR2410504B1 (en) 1980-08-22

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