A mass transfer assembly has at least one dividing wall, zones of mass transfer structures on opposite sides of the dividing wall, and a vapor flow restrictor that is operable to vary the split of vapor ascending through the zones of mass transfer structures on the opposite sides of the dividing wall.

The present invention relates to a distillation apparatus and, more particularly, to a distillation apparatus for recovering a high purity product through fractionation of volatile components from a material to be distilled, by using thermal energy and centrifugal force. The distillation apparatus can recover a high purity product from the material to be distilled without significant damage by reducing a pressure drop according to driving of the apparatus and thereby minimizing the temperature difference in the apparatus.

The present invention relates to a distillation apparatus and, more particularly, to a distillation apparatus for recovering a high purity product through fractionation of volatile components from a material to be distilled, by using thermal energy and centrifugal force. The distillation apparatus can recover a high purity product from the material to be distilled without significant damage by reducing a pressure drop according to driving of the apparatus and thereby minimizing the temperature difference in the apparatus.

A scrubber tray for a wet scrubber tower of a flue gas purification device includes a multiplicity of spindles, arranged across an inner horizontal cross section of the wet scrubber tower. Adjacent spindles are arranged at a horizontal distance to each other. At least some of the spindles are pivot-mounted to allow a rotative movement around a corresponding spindle axis and to arrange the respective spindle at a predetermined rotation angle. At least some of the spindles are equipped each with at least one protrusion, which extends outwardly from the respective spindle. The spindles and protrusions are shaped and arranged to provide flow-through openings between adjacent spindles and protrusions respectively. Each flow-through opening defines a corresponding flow-through area, and they add up to 10%-80% of the inner horizontal cross section of the associated scrubber tower, independently of the respective rotation angles of the spindles.

A scrubber tray for a wet scrubber tower of a flue gas purification device includes a multiplicity of spindles, arranged across an inner horizontal cross section of the wet scrubber tower. Adjacent spindles are arranged at a horizontal distance to each other. At least some of the spindles are pivot-mounted to allow a rotative movement around a corresponding spindle axis and to arrange the respective spindle at a predetermined rotation angle. At least some of the spindles are equipped each with at least one protrusion, which extends outwardly from the respective spindle. The spindles and protrusions are shaped and arranged to provide flow-through openings between adjacent spindles and protrusions respectively. Each flow-through opening defines a corresponding flow-through area, and they add up to 10%-80% of the inner horizontal cross section of the associated scrubber tower, independently of the respective rotation angles of the spindles.

Provided is a device for producing ultra-low sulfur biodiesel. The device for producing ultra-low sulfur biodiesel is a two-stage processing device, comprising a two-stage purification unit, a two-stage enzyme reaction unit, a two-stage distillation unit, and a decompression rectification unit. The present invention is green and environment-friendly, effectively and completely removing sulfur-containing impurities from the raw material, eliminating the attack of a sulfur-containing group in the synthesis process on fatty acids, and providing sufficient conditions for obtaining ultra-low sulfur content methyl esters in the product section.

Provided is a device for producing ultra-low sulfur biodiesel. The device for producing ultra-low sulfur biodiesel is a two-stage processing device, comprising a two-stage purification unit, a two-stage enzyme reaction unit, a two-stage distillation unit, and a decompression rectification unit. The present invention is green and environment-friendly, effectively and completely removing sulfur-containing impurities from the raw material, eliminating the attack of a sulfur-containing group in the synthesis process on fatty acids, and providing sufficient conditions for obtaining ultra-low sulfur content methyl esters in the product section.

A rotor for rotating packed bed units (RPBs) is described. The rotor comprises a first plate and a second plate. The rotor further comprises a plurality of sets of rings concentrically interposed between the first plate and the second plate. Each set of rings comprises a plurality of rings are arranged cylindrically. Further, each ring comprises a plurality of packing elements. The rotor further comprises at least one metallic ring interposed between the plurality of sets of rings.

A rotor for rotating packed bed units (RPBs) is described. The rotor comprises a first plate and a second plate. The rotor further comprises a plurality of sets of rings concentrically interposed between the first plate and the second plate. Each set of rings comprises a plurality of rings are arranged cylindrically. Further, each ring comprises a plurality of packing elements. The rotor further comprises at least one metallic ring interposed between the plurality of sets of rings.

A continuous distillation process comprises the following steps: putting a material into a multilayer distillation tower to enable the material to sequentially undergo preheating, extrusion pricking, steam distillation, meal roasting, drying and cooling treatment, condensing essential oil-containing steam, and carrying out water separation, so as to obtain an essential oil.