A process is described for treating waste plastics material to provide at least one on-specification fuel product. Plastics material is melted and then pyrolyzed in an oxygen-free atmosphere to provide pyrolysis gases. The pyrolysis gases are brought into contact with plates in a contactor vessel so that some long chain gas components condense and return to be further pyrolyzed to achieve thermal degradation. Short chain gas components exit the contactor in gaseous form and proceed to distillation to provide one or more on-specification fuel products. A pipe directly links the pyrolysis chamber to the contactor, suitable for conveying upwardly-moving pyrolysis gases and downwardly-flowing long-chain liquid for thermal degradation.

A process is described for treating waste plastics material to provide at least one on-specification fuel product. Plastics material is melted and then pyrolyzed in an oxygen-free atmosphere to provide pyrolysis gases. The pyrolysis gases are brought into contact with plates in a contactor vessel so that some long chain gas components condense and return to be further pyrolyzed to achieve thermal degradation. Short chain gas components exit the contactor in gaseous form and proceed to distillation to provide one or more on-specification fuel products. A pipe directly links the pyrolysis chamber to the contactor, suitable for conveying upwardly-moving pyrolysis gases and downwardly-flowing long-chain liquid for thermal degradation.

The present invention relates to a gas-redirecting device presenting an upper plane and a plurality of gas-redirecting tubes comprising an inlet end and an outlet end. For each gas-redirecting tube, the orthogonal projections of the inlet end and the outlet end onto the upper plane have an over-lapping area of at most 50% of the total area of the upper plane covered by the orthogonal projections. Also provided is a liquid-gas contacting column comprising a gas-redirecting device, a floating support comprising a liquid-gas contacting column, at least two packed beds and a method for improving the efficiency of a liquid-gas contacting column which is based on redirecting the gas from a wetted zone of a lower packed bed to a wetted zone of the higher packed bed.

The present invention relates to a gas-redirecting device presenting an upper plane and a plurality of gas-redirecting tubes comprising an inlet end and an outlet end. For each gas-redirecting tube, the orthogonal projections of the inlet end and the outlet end onto the upper plane have an over-lapping area of at most 50% of the total area of the upper plane covered by the orthogonal projections. Also provided is a liquid-gas contacting column comprising a gas-redirecting device, a floating support comprising a liquid-gas contacting column, at least two packed beds and a method for improving the efficiency of a liquid-gas contacting column which is based on redirecting the gas from a wetted zone of a lower packed bed to a wetted zone of the higher packed bed.

Present disclosure relates to a novel process for purification of lipid material for further use as such as, for example, a source of fuel of chemicals.

Present disclosure relates to a novel process for purification of lipid material for further use as such as, for example, a source of fuel of chemicals.

An oil scrub column having a petroleum spirit section and an oil section where each section has mass transfer trays having a plurality of runoff elements that extend parallel to and at a distance from one another, to form angular profiles. The runoff elements have first and second runoff surfaces that converge to form an edge. Scrubbing media introduced onto the edges of the runoff elements flows off via the runoff surfaces at both sides of the edge. The oil section has a greater number of mass transfer trays than the petroleum spirit section. The petroleum spirit section is shorter than the oil section. The mass transfer trays of the petroleum spirit section may be sieve trays, bubble trays or valve trays.

A hybrid contact tray for a mass transfer column is provided. The contact tray includes a tray deck for passage of liquid along a liquid flow path thereon. The tray deck has a plurality of orifices for passage of ascending vapor through the tray deck, a cross-current vapor-liquid mixing section having a first portion of the plurality of orifices, and a co-current vapor-liquid mixing section including at least one co-current mixing device associated with a second portion of the plurality of orifices. The tray deck also has features capable of altering liquid head levels with respect to the plurality of orifices such that the liquid head level within the co-current vapor-liquid mixing section is greater than the liquid head level within the cross-current vapor-liquid mixing section.

A hybrid contact tray for a mass transfer column is provided. The contact tray includes a tray deck for passage of liquid along a liquid flow path thereon. The tray deck has a plurality of orifices for passage of ascending vapor through the tray deck, a cross-current vapor-liquid mixing section having a first portion of the plurality of orifices, and a co-current vapor-liquid mixing section including at least one co-current mixing device associated with a second portion of the plurality of orifices. The tray deck also has features capable of altering liquid head levels with respect to the plurality of orifices such that the liquid head level within the co-current vapor-liquid mixing section is greater than the liquid head level within the cross-current vapor-liquid mixing section.

A liquid mixing collector includes first and second sump zones, a first and optionally a second liquid collection region, first and second interspersed sets of spaced apart liquid collection channels positioned in the first liquid collection region, the first and second sets of collection channels being associated with the first and second respective sump zones, wherein adjacent liquid collection channel sets are vertically displaced in parallel horizontal planes. The invention also relates to the process of using the collector within a heat or mass transfer column.