公开(公告)号：US3725491A

公开(公告)日：1973-04-03

申请号：US3725491D

申请日：1971-02-16

Applicant: HOECHST AG

Inventor： GUNTHER K ,  NOHA K ,  VOIGT H ,  SCHNECK E

IPC: B01D51/10 ,  C10G9/00 ,  F28C3/06 ,  C07C11/24

CPC classification number: F28C3/06 ,  B01D51/10 ,  C10G9/002

Abstract: In a process for the production of acetylene and/or lower olefins from hydrocarbons the enthalpy of cracked gas is recovered in two stages by an oil wash. In the first stage of the oil wash using temperatures within the boiling range of the wash oil and approximately atmospheric pressures, a cycle of highboiling oil components is maintained and condensed lower boiling oil components which are recycled from the second wash stage are directly vaporized by the cracked gases. The saturated mixture of oil vapor and cracked gases formed in the first stage is fed to the second wash stage and condensed therein by indirect cooling.

Abstract translation: 在从烃生产乙炔和/或低级烯烃的方法中，裂解气体的焓通过油洗两个阶段回收。 在使用温度在洗涤油沸点范围内和近似大气压力下的油洗的第一阶段中，保持高沸点油组分的循环并将从第二洗涤阶段再循环的低沸点油组分直接蒸发 被破裂的气体。 将第一阶段中形成的饱和的油蒸汽和裂化气体混合物送入第二洗涤阶段，并通过间接冷却冷凝。

公开(公告)号：US3710545A

公开(公告)日：1973-01-16

申请号：US3710545D

申请日：1971-03-12

Applicant: HOECHST AG

Inventor： GUNTHER K ,  SCHNECK E ,  VOIGT H ,  WESSELBORG K

IPC: B01D51/10 ,  B01D53/26 ,  B01D53/14

CPC classification number: B01D51/10 ,  B01D53/26 ,  Y02C20/20

Abstract: Readily polymerizing impurities are separated from crude gas obtained by pyrolysis by washing the crude gas with water and then pre-cooling the crude gas which is still hot with atomized cold calcium chloride solution before drying it with circulated cold calcium chloride solution. Part of the calcium chloride solution is continuously removed from the cycle of calcium chloride solution.

Abstract translation: 将通过热水洗涤粗气体的粗气体与水分离，然后用冷却的氯化钙溶液预干燥前用冷雾化的氯化钙溶液预冷却粗气体，然后将其冷却。 部分氯化钙溶液从氯化钙溶液的循环中连续除去。

公开(公告)号：BR7101103D0

公开(公告)日：1973-03-13

申请号：BR110371

申请日：1971-02-18

Applicant: HOECHST AG

Inventor： GUNTHER K ,  NOHA K ,  VOIGT H ,  SCHNECK E

IPC: B01D51/10 ,  C10G9/00 ,  F28C3/06 ,  C07C11/24

Abstract: In a process for the production of acetylene and/or lower olefins from hydrocarbons the enthalpy of cracked gas is recovered in two stages by an oil wash. In the first stage of the oil wash using temperatures within the boiling range of the wash oil and approximately atmospheric pressures, a cycle of high-boiling oil components is maintained and condensed lower boiling oil components which are recycled from the second wash stage are directly vaporized by the cracked gases. The saturated mixture of oil vapor and cracked gases formed in the first stage is fed to the second wash stage and condensed therein by indirect cooling.

公开(公告)号：BR6896157D0

公开(公告)日：1973-01-02

申请号：BR19615768

申请日：1968-01-11

Applicant: HOECHST AG

Inventor： PROBST O ,  SCHOLDERER J ,  ROSCHER G ,  GUNTHER K

IPC: C07C69/15 ,  C07C51/00 ,  C07C51/44 ,  C07C51/46 ,  C07C53/08 ,  C07C67/00

Abstract: 1,208,167. Recovery of vinyl esters. FARBWERKE HOECHST A.G. 12 Jan., 1968 [12 Jan., 1967], No. 1815/68. Heading C2C. Vinyl esters and carboxylic acids are continuously recovered from crude mixtures originating from the reaction of carboxylic acids with ethylene and oxygen, which mixture contains the ester, unreacted acid and water, by distilling the mixture in a first distilling column, if desired in the presence of a further substance which forms an azeotrope with water, and separating the azeotrope and the by-products having a lower boiling point than the vinyl ester at the head of the column, withdrawing from the sump of the column a practically anhydrous mixture, distilling said mixture in a second distilling column, withdrawing from the head of the second column the vinyl ester, from one or more concentrating zones between the head and the sump at least a major part of the by-products having a higher boiling point than the vinyl ester, and below the lowest concentrating zone or from the sump the carboxylic acid and the rest of the by-products. It is preferred to use the vinyl ester contained in the crude mixture as the substance forming an azeotrope with water. After separation of the vinyl ester from the azeotropic mixture obtained at the head of the first distilling column, the ester is recycled into the column. Examples describe the process applied to a mixture containing acetic acid, vinyl acetate, water, ethyl acetate and acetaldehyde and one containing isobutyric acid, vinyl isobutyrate, water, ethyl isobutyrate and acetaldehyde.