A regeneration method for catalytic cracking reaction, the method is applied in a catalytic reaction process of petroleum hydrocarbon materials, and the method comprises: feeding the regenerated and semi-regenerated catalyst from a regenerator separately into different positions of a reactor for reaction. A part of the semi-regenerated catalyst is firstly processed in a purification cooler for removing carried nitrogen, oxygen, carbon dioxide and impurity gases before being fed into the reactor. Spent catalyst or the purified and cooled semi-regenerated catalyst is fed into a catalyst mixing section of the reactor for controlling the temperature of the catalyst being contact with the oil material to be gasified, thereby achieving a three stage cycle of the catalyst in the reactor and a three stage control for the reaction outlets of the oil material gasification zone and the cracking reaction zone and the catalyst taking part in the reaction.

A method of producing a composite product is provided. The method includes providing a fluidized bed of carbon-based particles in a fluidized bed reactor, providing a catalyst or catalyst precursor in the fluidized bed reactor, providing a carbon source in the fluidized bed reactor for growing carbon nanotubes, growing carbon nanotubes in a carbon nanotube growth zone of the fluidized bed reactor, and collecting a composite product comprising carbon-based particles and carbon nanotubes.

A method of producing a composite product is provided. The method includes providing a fluidized bed of metal oxide particles in a fluidized bed reactor, providing a catalyst or catalyst precursor in the fluidized bed reactor, providing a carbon source in the fluidized bed reactor for growing carbon nanotubes, growing carbon nanotubes in a carbon nanotube growth zone of the fluidized bed reactor, and collecting a composite product comprising metal oxide particles and carbon nanotubes.

An improved reactor comprising a shell and at least one reactor internal component. The reactor internal component includes a tube bundle comprising a plurality of tubes attached by at least one tube support plate comprising at least one radial strut and at least one bracket configured to secure to at least one tube of the tube bundle. The tubes are arranged in concentric bands about a longitudinal axis of the reactor. The reactor comprises a gas inlet plate, a catalyst support plate, and a top plate.

A restraint system configured to stabilize catalyst loading tubes. The restraint system includes a first restraint that has a first collar portion and a second collar portion. The restraint system further includes a first fastener configured to attach the first collar portion to a first tube segment and a second fastener configured to attach the second collar portion to the first tube segment. The restraint system also includes a first linkage having a first end and a second end, and a second linkage having a first end and a second end. The restraint system includes a second restraint having a third collar portion and a fourth collar portion. The restraint system further includes a third fastener and a fourth fastener. The first ends of the first and second linkage couple to the first restraint and the second ends of the first and second linkage couple to the second restraint.

A radial flow adsorption vessel comprising a cylindrical outer shell having a top end and a bottom end, the top end is enclosed by a vessel head that provides a centrical opening usable as a port to introduce or remove adsorbent particles into or from the vessel; at least one annular adsorption space disposed inside the shell, the at least one annular adsorption space defined by an outer and inner cylindrical porous wall, both co-axially disposed inside the shell; and a loading device for the adsorbent particles positioned above the at least one annular adsorption space at the top end of the vessel, the loading device comprises at least one conical element that extends radially to the outer cylindrical porous wall, the at least one conical element provides a plurality of orifices arranged at least in a region sitting above the at least one annular adsorption space.

A moving bed reactor is provided that can allow facilitate performing a reaction involving a three-phase flow under co-axial flow conditions for the solid and liquid portions of the three phase flow, while the gas portion of the three-phase flow is exposed to the solids under radial flow conditions. Methods for using such a moving bed reactor to perform a reaction, such as upgrading of a feed to distillate products, are also provided.

A coke catching apparatus for use in hydrocarbon cracking to assist in the removal of coke and the prevention of coke build up in high coking hydrocarbon processing units. The apparatus includes a grid device for preventing large pieces of coke from entering the outlet of the process refining equipment while allowing small pieces of coke to pass through and be disposed of. The coke catching apparatus can be easily disassembled to be removed from the refining process equipment and cleaned.

The present invention relates to the field of high polymer material manufacturing, and discloses an air-isolated continuous feeding system for synthesizing polylactic acid from lactide and a feeding method thereof. The continuous feeding system comprises a raw material bag/box and a raw material collector for collecting and outputting lactide, the raw material bag/box is connected with a shielding gas input pipeline, a discharge pipe is movably inserted into the raw material bag/box, a cyclone separator is connected downstream of the discharge pipe, and a solid substance outlet of the cyclone separator is connected with the raw material collector. According to the invention, deterioration of the lactide raw material incurred by moisture absorption and oxidation is avoided, and the reaction conversion ratio and final product purity are improved. The continuous feeding system is easy to operate, can save manpower and material resources, and is applicable to industrial application.

The object of the present invention relates to a rotating drum for infeeding material by gravity to its interior, which can be used both inside a vessel that could be subjected to pressure or not, such as for example for the treatment of solid waste with water vapour, and externally for all types of equipment that require infeeding material to a rotating drum for the transportation and tumbling thereof, wherein due to the special configuration thereof it does not require an independent device for infeeding material to the rotating drum.