FR2398517A1 - PHOSGENE DECOMPOSITION PROCESS - Google Patents

PHOSGENE DECOMPOSITION PROCESS

Info

Publication number
FR2398517A1
FR2398517A1 FR7822576A FR7822576A FR2398517A1 FR 2398517 A1 FR2398517 A1 FR 2398517A1 FR 7822576 A FR7822576 A FR 7822576A FR 7822576 A FR7822576 A FR 7822576A FR 2398517 A1 FR2398517 A1 FR 2398517A1
Authority
FR
France
Prior art keywords
phosgene
reactor
gas
decomposition process
water
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
FR7822576A
Other languages
French (fr)
Other versions
FR2398517B1 (en
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.)
Hoechst AG
Original Assignee
Hoechst 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 Hoechst AG filed Critical Hoechst AG
Publication of FR2398517A1 publication Critical patent/FR2398517A1/en
Application granted granted Critical
Publication of FR2398517B1 publication Critical patent/FR2398517B1/fr
Granted legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D3/00—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
    • A62D3/30—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents
    • A62D3/35—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents by hydrolysis
    • 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/68—Halogens or halogen compounds
    • B01D53/70—Organic halogen compounds
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
    • A62D2101/40—Inorganic substances
    • A62D2101/45—Inorganic substances containing nitrogen or phosphorus
    • 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
    • B01J2219/00164—Controlling or regulating processes controlling the flow
    • B01J2219/00166—Controlling or regulating processes controlling the flow controlling the residence time inside the reactor vessel

Abstract

Procédé pour décomposer le phosgène par hydrolyse. On disperse le phosgène dans de l'eau à la tête d'un réacteur tubulaire 1 et on le fait passer avec l'eau par ce réacteur dans le sens opposé à celui des forces ascensionnelles du gaz. Le gaz contenant COCl2 , arrive en 7. Le gaz qui sort du réacteur en 6 ne referme pratiquement pas de phosgéne. Application : traitement des gaz usés provenant de certaines synthèses chimiques.Process for breaking down phosgene by hydrolysis. The phosgene is dispersed in water at the head of a tubular reactor 1 and it is passed with the water through this reactor in the direction opposite to that of the upward forces of the gas. The gas containing COCl2 arrives at 7. The gas which leaves the reactor at 6 practically does not close any phosge. Application: treatment of waste gases from certain chemical syntheses.

FR7822576A 1977-07-30 1978-07-31 PHOSGENE DECOMPOSITION PROCESS Granted FR2398517A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772734453 DE2734453A1 (en) 1977-07-30 1977-07-30 PROCESS FOR THE DECOMPOSITION OF PHOSGENE

Publications (2)

Publication Number Publication Date
FR2398517A1 true FR2398517A1 (en) 1979-02-23
FR2398517B1 FR2398517B1 (en) 1983-05-20

Family

ID=6015242

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7822576A Granted FR2398517A1 (en) 1977-07-30 1978-07-31 PHOSGENE DECOMPOSITION PROCESS

Country Status (10)

Country Link
JP (1) JPS5426279A (en)
BE (1) BE869419A (en)
CH (1) CH635557A5 (en)
DE (1) DE2734453A1 (en)
DK (1) DK335878A (en)
FR (1) FR2398517A1 (en)
GB (1) GB2001616B (en)
IT (1) IT1097779B (en)
LU (1) LU80052A1 (en)
NL (1) NL7808022A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2919661A1 (en) * 1979-05-16 1980-11-27 Basf Ag METHOD FOR KILLING PHOSGEN
DE3011614A1 (en) 1980-03-26 1981-10-01 Hoechst Ag, 6000 Frankfurt METHOD AND DEVICE FOR FUMERIZING LIQUIDS
DE3011615A1 (en) * 1980-03-26 1981-10-01 Hoechst Ag, 6000 Frankfurt METHOD AND DEVICE FOR ABSORPTION OF OZONE
CN111991998A (en) * 2020-08-27 2020-11-27 万华化学集团股份有限公司 Method for treating tail gas in isocyanate preparation process

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB752460A (en) * 1953-01-20 1956-07-11 Bayer Ag Process for the decomposition of phosgene
FR1478891A (en) * 1965-05-06 1967-04-28 Allied Chem Process for washing out phosgene contained in gaseous products
DE2344217A1 (en) * 1973-09-01 1975-03-27 Basf Ag Combustion process for removal of phosgene - by feeding waste gases into stable flame from air-inflammable gas mixts.
FR2317959A1 (en) * 1975-07-15 1977-02-11 Basf Ag PROCESS FOR REMOVING PHOSGENE FROM RESIDUAL GASES

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB752460A (en) * 1953-01-20 1956-07-11 Bayer Ag Process for the decomposition of phosgene
FR1478891A (en) * 1965-05-06 1967-04-28 Allied Chem Process for washing out phosgene contained in gaseous products
DE2344217A1 (en) * 1973-09-01 1975-03-27 Basf Ag Combustion process for removal of phosgene - by feeding waste gases into stable flame from air-inflammable gas mixts.
FR2317959A1 (en) * 1975-07-15 1977-02-11 Basf Ag PROCESS FOR REMOVING PHOSGENE FROM RESIDUAL GASES

Also Published As

Publication number Publication date
GB2001616B (en) 1982-04-07
BE869419A (en) 1979-01-31
JPS5426279A (en) 1979-02-27
LU80052A1 (en) 1979-05-15
FR2398517B1 (en) 1983-05-20
GB2001616A (en) 1979-02-07
DE2734453A1 (en) 1979-02-15
CH635557A5 (en) 1983-04-15
NL7808022A (en) 1979-02-01
IT1097779B (en) 1985-08-31
IT7826272A0 (en) 1978-07-28
DK335878A (en) 1979-01-31

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Legal Events

Date Code Title Description
ST Notification of lapse