DE899191C - Process for the production of vinyl chloride from dichloroethanes - Google Patents

Process for the production of vinyl chloride from dichloroethanes

Info

Publication number
DE899191C
DE899191C DEF6337A DEF0006337A DE899191C DE 899191 C DE899191 C DE 899191C DE F6337 A DEF6337 A DE F6337A DE F0006337 A DEF0006337 A DE F0006337A DE 899191 C DE899191 C DE 899191C
Authority
DE
Germany
Prior art keywords
vinyl chloride
production
dichloroethanes
reaction
distillation
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
DEF6337A
Other languages
German (de)
Inventor
Dr Hans Krekeler
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
Priority to DEF6337A priority Critical patent/DE899191C/en
Application granted granted Critical
Publication of DE899191C publication Critical patent/DE899191C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/25—Preparation of halogenated hydrocarbons by splitting-off hydrogen halides from halogenated hydrocarbons
    • 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

Description

Gegenstand de|S Patents 857 957 ist ein Verfahren zur Herstellung von Vinylchlorid aus Dichlo-räthanen, bai welchem der Ausgangsstoff unter erhöhtem Druck auf hohe Temperaturen erhitzt und das Reaktionsgemisch nach dem A1> kühlen unter erhöhtem Druck fraktioniert destilliert wird.The subject of the | S patent 857 957 is a process for the production of vinyl chloride from dichloroethanes, in which the starting material is heated to high temperatures under increased pressure and the reaction mixture is fractionally distilled after cooling under increased pressure.

Es wurde nun gefunden, daß das; Verfahren auch noch Vorteile bietet, wenn man nach der Umsetzung unter Drude die Reaktionsgas ei entspannt und sie entweder einer Tieftemperaturdestillation unterzieht oder den Chlorwasserstoff vorher mit einem Absorptionsmittel entfernt und das Vinylchlorid dann durch Destillation vom nicht umgesetzten Dichloräthan abtrennt.It has now been found that this; Procedure too still offers advantages if the reaction gas is released under pressure after the reaction and either subjecting it to cryogenic distillation or previously with the hydrogen chloride an absorbent removed and then the vinyl chloride by distillation of the unreacted Separates dichloroethane.

B e i s ρ i e 1B e i s ρ i e 1

Durch ein Rohr aus Edelstahl von 1000 mm Länge und 6 mm lichter Weite werden, stündlich 6000 g H, 2 Dichloräthandampf gegeben. Die Reaktioiistemperatur beträgt etwa 6oo°. Der Druck während der Umsetzung wird auf 20 atü gehalten. Die den Ofen verlassenden. Reaktionsgase werden auf 700 abgekühlt und auf Normaldruck entspannt. Bei einer nachfolgenden Tieftemperaturdestillation werden stündlich 1090 g Chlorwasserstoff, 182101g Vinylchlorid und 3050 g nicht umgesetztes Dichloräthan erhalten. Bei diesem Umsatz entsteinen stündlich nur etwa 4 1 Spaltgas. Der Umsatz betragt 49 °/o, die Ausbeute an VinylchloridAre passed through a stainless steel tube of 1000 mm length and 6 mm internal diameter, 6000 g per hour is H, optionally 2 Dichloräthandampf. The reaction temperature is about 600 °. The pressure during the reaction is kept at 20 atmospheres. Those leaving the oven. Reaction gases are cooled to 70 0 and depressurized to atmospheric pressure. A subsequent low-temperature distillation gives 1090 g of hydrogen chloride, 182101 g of vinyl chloride and 3050 g of unreacted dichloroethane per hour. With this conversion, only about 4 liters of cracked gas pitted per hour. The conversion is 49% and the yield of vinyl chloride

98,0%. Das nicht umgesetzte Dichloräthan kann wteder der gleichen Reaktion unterworfen werden.98.0%. The unreacted dichloroethane can can be subjected to the same reaction.

Claims (1)

PATENTANSPRUCH:PATENT CLAIM: Verfahren zur Herstellung von Vinylchlorid aus Dichloräthanen gemäß Patent 857 957, dadurch gekennzeichnet, daß man die Reaktionsgase nach der unter Druck durchgeführten Umsetzung emtspannt und entweder einer Tieftemperaturdestillation unterwirft oder den Chlorwasserstoff mit einem Absorptionsmittel entfernt und das Vinylchlorid dann durch Destillation vom nicht umgesetzten Dichlaräthan abtrennt.Process for the production of vinyl chloride from dichloroethanes according to patent 857 957, thereby characterized in that the reaction gases are carried out under pressure Implementation relaxed and either subjected to a low-temperature distillation or the Removed hydrogen chloride with an absorbent and then passed the vinyl chloride through Distillation separates from the unreacted dichloroethane. I 5637 11.I 5637 11.
DEF6337A 1950-12-27 1951-06-02 Process for the production of vinyl chloride from dichloroethanes Expired DE899191C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF6337A DE899191C (en) 1950-12-27 1951-06-02 Process for the production of vinyl chloride from dichloroethanes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE302148X 1950-12-27
DEF6337A DE899191C (en) 1950-12-27 1951-06-02 Process for the production of vinyl chloride from dichloroethanes

Publications (1)

Publication Number Publication Date
DE899191C true DE899191C (en) 1953-12-10

Family

ID=25785894

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF6337A Expired DE899191C (en) 1950-12-27 1951-06-02 Process for the production of vinyl chloride from dichloroethanes

Country Status (1)

Country Link
DE (1) DE899191C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1100616B (en) * 1957-09-10 1961-03-02 Hoechst Ag Process for the production of vinyl chloride by thermal cleavage of ethylene chloride
DE1210800B (en) * 1964-03-03 1966-02-17 Huels Chemische Werke Ag Process for the production of vinyl chloride by thermal cleavage of dichloroethane

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1100616B (en) * 1957-09-10 1961-03-02 Hoechst Ag Process for the production of vinyl chloride by thermal cleavage of ethylene chloride
DE1210800B (en) * 1964-03-03 1966-02-17 Huels Chemische Werke Ag Process for the production of vinyl chloride by thermal cleavage of dichloroethane

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