公开(公告)号：DE3061238D1

公开(公告)日：1983-01-13

申请号：DE3061238

申请日：1980-02-08

Applicant: HOECHST AG

Inventor： CZEKAY ARNO DR ,  HOLLER ERNST ,  KUXDORF BERNHARD ,  PUSCHE HERBERT ,  NEUSS HANS-WILHELM ,  SCHOLZ HARALD DR

IPC: C07C17/25 ,  C07C21/06 ,  C07C17/34

公开(公告)号：CA1127669A

公开(公告)日：1982-07-13

申请号：CA345740

申请日：1980-02-15

Applicant: HOECHST AG

Inventor： CZEKAY ARNO ,  HOLLER ERNST ,  KUXDORF BERNHARD ,  PUSCHE HERBERT ,  NEUSS HANS-WILHELM ,  SCHOLZ HARALD

IPC: C07C17/25 ,  C07C21/06

Abstract: RECOVERY OF PYRCLYTIC ENERGY IN THE PRODUCTION OF VINYL CHLORIDE BY SUBJECTING 1,2-DICHLOROETHANE TO AN INCOMPLETE THERMAL CRACKING REACTION Pyrolytic energy is recovered in the production of vinyl chloride, wherein liquid 1,2-dichloroethane is preheated under pressure, evaporated and introduced in gaseous form into a craking zone, subjected to an incomplete thermal cracking reaction therein, the resulting hot cracked gases maintained under pressure are cooled and succesively separated into their constituents in a plurality of distilling zones for removal of hydrogen chloride, vinyl chloride, and high boilers therefrom, and for recovery of unreacted 1,2dichloroethane. To this end, the hot cracked gases are cooled in at least one heat exchanger of which the jacket side has a heat transfer agent or coolant passed through it, the heat transfer agent or coolant with the heat absorbed therein being removed for use elsewhere in the process.

公开(公告)号：DE2913030A1

公开(公告)日：1980-10-16

申请号：DE2913030

申请日：1979-03-31

Applicant: HOECHST AG

Inventor： CZEKAY ARNO DIPL CHEM DR ,  HOELLER ERNST DIPL ING ,  KUXDORF BERNHARD DIPL ING ,  PUESCHE HERBERT DIPL ING ,  NEUSS HANS-WILHELM ,  SCHOLZ HARALD DIPL CHEM DR

IPC: C07C17/25 ,  C07C21/06 ,  C07C17/34

Abstract: In a process for recovering pyrolysis energy in the prodn. of vinyl chloride, liq. 1,2-dichloroethane (I) is preheated under pressure, vapourised and led in the gaseous state into a cleavage zone. After incomplete thermal cleavage the hot cleavage gases under pressure are cooled in a heat exchanger through which a heat transfer or cooling agent is passed. The heat exchange medium, after extracting heat from the hot gases, is led off for use in another part of the process. The cooled gas stream is treated in a number of successive distn. zones to recover HCl, vinyl chloride, unconverted (I) and high- and low-boiling components. Process allows utilisation of the pyrolysis heat evolved during cleavage of the (I), and which was previously lost. The heat is esp. used to heat the distn. columns in the prod. sepn. stage.

公开(公告)号：DE2913004A1

公开(公告)日：1980-10-16

申请号：DE2913004

申请日：1979-03-31

Applicant: HOECHST AG

Inventor： CZEKAY ARNO DIPL CHEM DR ,  HOELLER ERNST DIPL ING ,  KUXDORF BERNHARD DIPL ING ,  PUESCHE HERBERT DIPL ING ,  NEUSS HANS-WILHELM ,  SCHOLZ HARALD DIPL CHEM DR

IPC: C07C17/25 ,  C07C21/06 ,  C07C17/34

Abstract: In a process for recovering pyrolysis energy in the prodn. of vinyl chloride, liq. 1,2-dichloroethane (I) is preheated under pressure, vapourised and led in the gaseous state into a cleavage zone. After incomplete thermal cleavage the hot cleavage gases under pressure are cooled in a heat exchanger through which a heat transfer or cooling agent is passed. The heat exchange medium, after extracting heat from the hot gases, is led off for use in another part of the process. The cooled gas stream is treated in a number of successive distn. zones to recover HCl, vinyl chloride, unconverted (I) and high- and low-boiling components. Process allows utilisation of the pyrolysis heat evolved during cleavage of the (I), and which was previously lost. The heat is esp. used to heat the distn. columns in the prod. sepn. stage.

公开(公告)号：DE2907066A1

公开(公告)日：1980-09-04

申请号：DE2907066

申请日：1979-02-23

Applicant: HOECHST AG

Inventor： CZEKAY ARNO DIPL CHEM DR ,  HOELLER ERNST DIPL ING ,  KUXDORF BERNHARD DIPL ING ,  PUESCHE HERBERT DIPL ING ,  NEUSS HANS-WILHELM ,  SCHOLZ HARALD DIPL CHEM DR

IPC: C07C17/00 ,  C07C17/25 ,  C07C21/06 ,  C07C67/00 ,  C07C17/34

Abstract: In a process for recovering pyrolysis energy in the prodn. of vinyl chloride, liq. 1,2-dichloroethane (I) is preheated under pressure, vapourised and led in the gaseous state into a cleavage zone. After incomplete thermal cleavage the hot cleavage gases under pressure are cooled in a heat exchanger through which a heat transfer or cooling agent is passed. The heat exchange medium, after extracting heat from the hot gases, is led off for use in another part of the process. The cooled gas stream is treated in a number of successive distn. zones to recover HCl, vinyl chloride, unconverted (I) and high- and low-boiling components. Process allows utilisation of the pyrolysis heat evolved during cleavage of the (I), and which was previously lost. The heat is esp. used to heat the distn. columns in the prod. sepn. stage.