This present disclosure relates to apparatuses for methylation of aromatics in an aromatics complex for producing a xylene isomer product. More specifically, the present disclosure relates to the use of riser slip reduction technology to improve the methanol feed and catalyst contacting which will improve the product yield rate.

A process for performing a heterogeneously catalysed reaction in a three-phase reactor, where there is at least one liquid phase, at least one gaseous phase and at least one solid phase in the reactor and the reactor has at least two zones, with the reaction mixture being conveyed downward in zone 1, the reaction mixture being conveyed upward in zone 2, zones 1 and 2 being separated from one another by a dividing wall, and in that the ratio between the average catalyst concentrations in zone 2 and in zone 1 is greater than 2.

In a method for gas-flow carrying a solid particle, the solid particle includes a solid substance generating a dissociation equilibrium reaction that dissociates at least one type of gas component, and the solid particle is carried by a gas flow containing the gas component. The average particle diameter of the solid particle is preferably 0.1-1.0 mm. The solid particle is preferably carried by the gas flow in the state of a suspended flow, a fluidized flow, or a plug flow. The solid particle preferably includes a solid substance to generate a dissociation equilibrium reaction that dissociates at least one gas component and at least one solid component, and the solid particle is preferably carried by the gas flow in a carrying pipe and the solid particle or the solid component that has adhered to the interior surface of the carrying pipe is removed by the gas flow.

A system for processing one or more materials includes a processor having a shell defining a chamber and a plurality of serially stacked pipe assemblies. Each pipe assembly includes a header having at least one substantially straight pipe section receiving a fluid; and a plurality of nozzles in fluid communication with and projecting downwardly from the header. The nozzles direct the fluid into the chamber of the processor.

A supported riser apparatus may be housed at least partially within a vessel. The supported riser apparatus may include a riser including a non-vertical riser segment, a non-linear riser segment, and a vertical riser segment. The supported riser apparatus may further include a support member comprising a proximal end and a distal end. The proximal end of the support member may be connected to the non-vertical riser segment and the angle between the support member and the non-vertical riser segment may be from 15 to 75. The supported riser apparatus may include a support structure connected to the riser and the support member and an expansion guide connected to an interior surface of the vessel. The expansion guide may be shaped and positioned such that the support member slides across the expansion guide as the support member undergoes thermal expansion or thermal contraction.

According to one or more embodiments of the present disclosure, a riser may include a lower riser portion, where the lower riser portion terminates at an upper end of the vertical riser segment, and an upper riser portion including a lower end, where the lower end of the upper riser portion may be positioned around the upper end of the vertical riser segment of the lower riser portion. The riser may also include a first guide and a second guide each positioned on opposite sides of the interior of the lower end of the upper riser portion. The vertical riser segment of the lower riser portion may be guided in a direction substantially parallel with the outer surface of the first guide and the outer surface of the second guide when the lower riser portion expands or contracts due to changes in temperature.

The invention relates to a honeycomb metal anchoring structure (10), formed from a plurality of strips (12) assembled in pairs so as to define a plurality of cells (14). Each strip (12) is divided along its length into a plurality of portions, including at least one series of planar assembly portions (121, 122) juxtaposed and assembled with a series of assembly portions of an adjacent strip by fastening means, each strip (12) having a lower longitudinal edge intended to be applied against a wall to be protected and an upper longitudinal edge opposite the lower longitudinal edge. The anchoring structure additionally comprises a plurality of protective tabs (16) connecting each pair of juxtaposed assembly portions (121, 122), each protective tab (16) being attached to an assembly portion (122) by a longitudinal join line (18) and extending in the direction of the juxtaposed assembly portion (121), at least up thereto.

A regenerator for an FCC apparatus. The regenerator includes an internal riser inside of a outer shell. The internal riser includes a cone and a cone skirt. An annulus is formed between the internal riser and the outer shell. A sealing apparatus for keeping catalyst out of a portion of the annulus comprises a first sealing element and a second sealing element disposed above the first sealing element. An annular trough in the annulus below the primary seal is filled with material that has a heat transfer coefficient at least as high as air to allow heat to get to the inner surface of the outer shell.

A gas injection element (10) for a system for distributing a gas inside a chamber of a fluid catalytic cracking unit. This injection member comprises a passage (14) extending entirely therethrough, and an inner ceramic member (20) having an inner surface (22) that entirely delimits the through-passage (14); and a hollow metal sleeve (30), inside which at least a portion of the inner member (20) is received, the sleeve (30) and the inner member (20) respectively having an inner surface (32) and an outer surface (24) with matching shapes allowing the inner member (20) to move relative to the sleeve (30) in a direction parallel to an axis (X) of the passage (14), the outer (32) and inner surfaces (24) being provided with fastening elements (26, 36) that engage to reversibly fasten the sleeve and the inner member.

The present invention is directed to a high pressure fluidized bed system using dual control valves, and an inner pressure control method thereof. The high pressure fluidized bed system includes a fluidized bed reactor, a pressure sensor which measures a pressure in the interior of the fluidized bed reactor, a cyclone part which is coupled to the fluidized bed reactor, a first valve allowing controlling of the exhaust gas, and a second valve allowing manually controlling of exhaust gas except for the exhaust gas controlled by the first valve. The first valve is capable of opening and closing automatically, and the second valve is capable of opening and closing manually, and are used in combination in the high pressure fluidized bed, allowing decreasing of the pressure variation within the reactor and improving the operation stability of the reactor.