A catalyst loading and unloading system for chemical reactors has an extendable catalyst transfer tube that is fed by a catalyst hopper and controlled by a tube displacement mechanism; more particularly, by a winch mechanism. As the reactor chamber fills with catalyst, a lower end of the extendable catalyst transfer tube is displaced upward by the tube displacement mechanism to correspond with the rising height of the catalyst bed within the chamber. The extendable catalyst transfer tube may further be used to vacuum old catalyst out of the reactor chamber.

A naphtha reforming reactor system comprising a first reactor comprising a first inlet and a first outlet, wherein the first reactor is configured to operate as an adiabatic reactor, and wherein the first reactor comprises a first naphtha reforming catalyst; and a second reactor comprising a second inlet and a second outlet, wherein the second inlet is in fluid communication with the first outlet of the first reactor, wherein the second reactor is configured to operate as an isothermal reactor, and wherein the second reactor comprises a plurality of tubes disposed within a reactor furnace, a heat source configured to heat the interior of the reactor furnace; and a second naphtha reforming catalyst disposed within the plurality of tubes, wherein the first naphtha reforming catalyst and the second naphtha reforming catalyst are the same or different.

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 invention relates to a filling system (1) for a container intended to store solid particles, the system (1) being arranged to cooperate with a supply device for feeding solid particles and comprising a device (5) for distributing the solid particles, which has at least one separator element (9) intended to receive and selectively distribute the solid particles toward a dispensing device (7), the separator element (9) comprising a receiving body (11) for receiving solid particles, one end of which has an axial opening (13) for continuously feeding the dispensing device (7), the dispensing device (7) comprising at least one scattering element (21) for homogeneously filling the container with solid particles, which is driven by a drive shaft passing through the axial opening (13). According to the invention, the receiving body (11) comprises a frustoconical part (11a) which has the axial opening (13) and flares away from the axial opening (13), the frustoconical part (11a) being extended by a tubular part (11b) comprising at least one radial opening (15) which is located upstream of the axial opening (13) and is arranged to direct the solid particles without encountering those exiting the axial opening (13) before arriving in the dispensing device (7) from a predetermined amount of solid particles stored in the frustoconical part (11a) of the receiving body (11) in order to guarantee a minimum flow of solid particles even in the event of variations in the flow rate of the supply device.

A particular embodiment of the invention relates to a conveyor system (10) for conveying material (for example: particulate material such as a catalyst) from a particular storage area (such as drum (18)) to a second location (such as a reactor (13)). In accordance with the present embodiment of the invention, the conveyor system (10) is adapted to isolate from the environment the particular material to be conveyed; thus, avoiding that the particular material enters in contact with, for example, the atmosphere. Isolating the particular material is particular advantageous; because, for example, the isolation process suppresses activation of the material (such as the catalyst) due to coming in direct contact with the oxygen and moisture content of the atmosphere.

A laminar stream reactor for the production of hydrochar of a solid-fluid mixture of water and a carbon-containing component, wherein the solid-fluid mixture is treated at a temperature of 100-300° C. and a pressure of 5-70 bar, consists of tubular reactor units of largely vertical holding sections (1,3) and direction-changing diverters (2,4). The holding sections are thereby flown through slower by the solid-fluid mixture than the remaining tube distances, as they have larger diameters.

A method for continuous steam explosion discharge of a pressurised reactor for thermal treatment of lignocellulose biomasses. The steam explosion discharge is complete decoupled from the thermal treatment step and the loss of steam from the process is fully controlled without jeopardizing the mechanical disintegration of the lignocellulose material from the process.

A metal-free catalytic oxidation system, an oxygenation method and a method for producing benzoic acid derivatives. The system includes a feed device; a tubular reactor; a plurality of venturi nozzles mounted on the tubular reactor at intervals; a tubular filter; a discharge device for a solid phase product; and an intermediate tank for reaction mixture. A low-pressure zone is formed at an output end of each of the plurality of venturi nozzles, and an oxygen inlet corresponds to the low-pressure zone; the tubular filter comprises an inner tube and an outer tube connected to each other, where the inner tube is provided with small holes for solid-liquid separation; the discharge device for the solid phase product is located at an end of the inner tube; and the intermediate tank for reaction mixture is connected to the outer tube of the tubular filter through a pipeline.

The invention relates to a filling system (1) for a container for storing solid particles, comprising a distribution device (5) for solid particles for receiving and selectively distributing the solid particles towards a dispensing device (7), and comprising at least one divider element (11), the dispensing device (7) comprising at least one scattering element (13) for homogeneously filling the container with solid particles, the divider element (11) being rotatably mounted about an axis substantially parallel to the direction of flow of the stream of solid particles in order to allocate any defect in the flow of the solid particles in the distribution device (5).

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.