A device comprises a structure (100.0) for conducting a first fluid, the structure (100.0) having in addition an interface for conducting a second fluid, wherein the first fluid can be brought into contact with the second fluid at the interface of the structure. A flow interrupter (120.0) for interrupting a flow of the second fluid is situated at the interface of the structure (100.0).

A process for removing a petroleum spirit fraction and also an oil fraction from a cracking gas stream in an oil scrub column, wherein, the ratio of the amount of substance of the petroleum spirit fraction recycled into the benzene section at the top per unit time to the amount of substance of the cracking gas introduced into the oil section per unit time is in a range from 1:16 to 1:10, preferably 1:12 to 1:10.

A process for removing a petroleum spirit fraction and also an oil fraction from a cracking gas stream in an oil scrub column, wherein, the ratio of the amount of substance of the petroleum spirit fraction recycled into the benzene section at the top per unit time to the amount of substance of the cracking gas introduced into the oil section per unit time is in a range from 1:16 to 1:10, preferably 1:12 to 1:10.

A packing is provided which has an increased corrosion resistance, high chemical resistance, low flow resistance, and an increased service life in comparison with conventional packings, wherein, to this end, it is provided that the packing comprises includes a honeycomb body having first and second end faces, wherein the honeycomb body has a honeycomb structure which has a plurality of flow channels that are arranged substantially in parallel and that are adjacent to each other by means of channel walls, and wherein the honeycomb body is made from a first plastics material based on polytetrafluoroethylene (PTFE) polymer material. Furthermore, a column is proposed which comprises includes a housing that has at least one inlet, at least one outlet and one or more packings according to the invention which are preferably arranged in a flow path running from the inlet to the outlet, in succession if applicable.

A packing is provided which has an increased corrosion resistance, high chemical resistance, low flow resistance, and an increased service life in comparison with conventional packings, wherein, to this end, it is provided that the packing comprises includes a honeycomb body having first and second end faces, wherein the honeycomb body has a honeycomb structure which has a plurality of flow channels that are arranged substantially in parallel and that are adjacent to each other by means of channel walls, and wherein the honeycomb body is made from a first plastics material based on polytetrafluoroethylene (PTFE) polymer material. Furthermore, a column is proposed which comprises includes a housing that has at least one inlet, at least one outlet and one or more packings according to the invention which are preferably arranged in a flow path running from the inlet to the outlet, in succession if applicable.

An assembly table for use in a remote manufacturing yard is provided. The assembly table is configured to be collapsible thereby allowing for a reduced footprint during transportation. The assembly table can include a central support base; a plurality of arms attached to the central support base; a secondary support member attached to each arm configured to provide support for and give height to the assembly table when in use; and a centering guide attached to each arm, the centering guide configured to receive a bottom portion of a partial shell, the centering guide located at a predetermined location of its own arm.

A method for recovering dimethylformamide from a polyimide production waste solution containing dimethylformamide, acetic acid, a catalyst, and water, includes (a) a neutralization process of forming the acetic acid into a non-volatile acetate by adding a metal hydroxide to the waste solution, (b) a first distillation process of removing the water contained in the waste solution that has gone through the step (a), (c) a second distillation process of separating and removing the non-volatile acetate from the waste solution, (d) a water content control process of controlling the water content in the waste solution by adding water to the waste solution such that the dimethylformamide and the catalyst contained in the distilled waste solution in the step (c) do not form an azeotropic mixture, and (e) a third distillation process of separating and recovering dimethylformamide through fractional distillation from the waste solution in which the water content has been controlled.

A method for recovering dimethylformamide from a polyimide production waste solution containing dimethylformamide, acetic acid, a catalyst, and water, includes (a) a neutralization process of forming the acetic acid into a non-volatile acetate by adding a metal hydroxide to the waste solution, (b) a first distillation process of removing the water contained in the waste solution that has gone through the step (a), (c) a second distillation process of separating and removing the non-volatile acetate from the waste solution, (d) a water content control process of controlling the water content in the waste solution by adding water to the waste solution such that the dimethylformamide and the catalyst contained in the distilled waste solution in the step (c) do not form an azeotropic mixture, and (e) a third distillation process of separating and recovering dimethylformamide through fractional distillation from the waste solution in which the water content has been controlled.

An evaporator (1) adapted for a counter-current flow of at least one liquid and one vapor therein is disclosed. The evaporator (1) comprises an evaporator sub-unit (70), an internal sub-unit (90) having a surface (92), a heat exchanger sub-unit (100), and a condenser sub-unit (110), all in communication with one another and contained within one common vessel (12), wherein the internal sub-unit (90) is located above the evaporator sub-unit (70), the heat exchanger sub-unit (100) is located above the evaporator sub-unit (70), and the condenser sub-unit (110) is located above the heat exchanger sub-unit (100) and the internal sub-unit (90). The present invention further relates to a process to separate components using the evaporator (1) and also to the use of the evaporator (1) or the process in the purification and/or concentration of a thermally-sensitive compound and/or in the removal of a solvent.

An evaporator (1) adapted for a counter-current flow of at least one liquid and one vapor therein is disclosed. The evaporator (1) comprises an evaporator sub-unit (70), an internal sub-unit (90) having a surface (92), a heat exchanger sub-unit (100), and a condenser sub-unit (110), all in communication with one another and contained within one common vessel (12), wherein the internal sub-unit (90) is located above the evaporator sub-unit (70), the heat exchanger sub-unit (100) is located above the evaporator sub-unit (70), and the condenser sub-unit (110) is located above the heat exchanger sub-unit (100) and the internal sub-unit (90). The present invention further relates to a process to separate components using the evaporator (1) and also to the use of the evaporator (1) or the process in the purification and/or concentration of a thermally-sensitive compound and/or in the removal of a solvent.