A tower packing element (100), a tower packing (300), a packing tower, and a mixer comprising the tower packing element (100) are provided. The tower packing element (100) are manufactured by a deformed plate and comprises a plurality of strip assemblies (10) arranged along a longitudinal direction of the tower packing element (100) and a connecting plate portion (20) connected between adjacent strip assemblies (10). Each of the strip assemblies (10) defines a central passage (30) therein, and the central passage (30) is extended in a lateral direction of the tower packing element (100). The connecting plate portion (20) is extended along the lateral direction of the tower packing element (100). The adjacent strip assemblies (10) and the connecting plate portion (20) connected therebetween define a side passage (40) parallel to the central passage (30).

An expandable center arrangement for a reactor is disclosed. The arrangement comprises an expansion tube; a center support inside the expansion tube and three or more spring elements. The spring elements are fastened to the center support and arc out to the expansion tube. A reactor is also disclosed.

A vessel provides for removing hydrocarbons from a catalyst. In an FCC unit, the vessel includes first and second sections. The first section includes at least one grid having a plurality of intersecting members and openings therebetween. The second section includes structured packing such as a plurality of ribbons. Grids are supported by pipes that are supported by the second section.

Provided is an NMP recovery system 1 for causing NMP-containing gas to contact NMP-absorbing water, including: fillers (10A) to (10D) that are permeable to the water and hold the water, wherein the permeated water moves according to gravity to flow out from the fillers; an NMP-containing gas distribution unit (30) for distributing the NMP-containing gas so as to cause the NMP-containing gas to contact the water held by the fillers (10A) to (10D); and a water distribution unit (40) for distributing the water so as to make the water permeate through the fillers (10A) to (10D). In the fillers (10A) to (10D), the NMP-containing gas is made to contact the NMP-absorbing water. Accordingly, NMP in the NMP-containing gas is absorbed in the water, so that the NMP is separated from the NMP-containing gas.

A tower packing element, a tower packing, a packing tower, and a mixer comprising the tower packing element are provided. The tower packing element are manufactured by a deformed plate and comprises a plurality of strip assemblies arranged along a longitudinal direction of the tower packing element and a connecting plate portion connected between adjacent strip assemblies. Each of the strip assemblies defines a central passage therein, and the central passage is extended in a lateral direction of the tower packing element. The connecting plate portion is extended along the lateral direction of the tower packing element. The adjacent strip assemblies and the connecting plate portion connected therebetween define a side passage parallel to the central passage.

A catalyst arrangement disposed within a vertical reaction tube includes a structured catalyst within an upper part of the reaction tube, a particulate catalyst beneath the structured catalyst in a lower part of the reaction tube, and a catalyst support device located between the structured catalyst and the particulate catalyst, wherein the catalyst support device includes a cylindrical body having a first end adapted for connection to the structured catalyst, and a second end, and the cylindrical body has a diameter 70-90% of the internal diameter of the tube and a length/diameter in the range 0.5-2.5.

Filling bodies for the use in unstructured packings. The filling body has a fibre-reinforced carbon flat material. Two strip regions of the carbon flat material, which are separated by a cut, transition into two connecting regions of the carbon flat material.

A packing for gas separation from a liquid absorbent includes a body having a corrugated surface or surface sub-texture adapted to create local turbulence within a liquid absorbent with which the body has been wetted. The body may also has a corrugated profile wherein the surface sub-texture comprises a plurality of individual scallops and the corrugated profile comprises a plurality of individual furrow with between about 2 and about 50 individual scallops per furrow. The packing is useful in a method for gas separation from a liquid absorbent.

An exchange column having at least a first layer of structured packing and a second layer of structured packing, each layer formed from corrugated plates, the corrugated plates of the second layer having an orientation that is rotated at an angle relative to the corrugated plates of the first layer from 20 to 90, wherein the vertical height of the first layer and/or the vertical height of the second layer is greater than 350 mm or greater than 400 mm.

An exchange column having at least a first layer of structured packing and a second layer of structured packing, each layer formed from corrugated plates, the corrugated plates of the second layer having an orientation that is rotated at an angle relative to the corrugated plates of the first layer from 20 to 90, wherein the vertical height of the first layer and/or the vertical height of the second layer is greater than 350 mm or greater than 400 mm.