An arrangement for controlling a flow of solid particles includes a vertical inlet pipe for directing solid particles downwards and having a bottom at a level L0, a first outlet chute and a second outlet chute in particle flow connection with the vertical inlet pipe and a fluidizing device for directing controlled first and second sub flows to the first and second outlet chutes. The arrangement includes a branch in particle flow connection with an opening on a side wall of the vertical inlet pipe for directing the first sub flow of solid particles to the first outlet chute and a horizontally extending intermediate pipe for directing the second sub flow of solid particles to the second outlet chute. The intermediate pipe includes at least one nozzle feeding fluidizing gas to the intermediate pipe and has a first end in particle flow connection with the bottom of the inlet pipe.

System and method for producing olefins are disclosed. The method includes using a radial flow moving bed reactor system to catalytically crack paraffins, in multiple stages with continuous catalyst regeneration, to form olefins. The system includes inter-stage heaters to facilitate increase in yield of olefins.

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.

An apparatus for producing water-absorbing resin particles for which surface cross-linking treatment is conducted, the surface cross-linking treatment being conducted by spraying a surface cross-linking agent to a water-absorbing resin particle precursor and heating the agent and the precursor, the apparatus includes a treatment container in which the surface cross-linking treatment is conducted, a stirring device including a stirring member disposed in the treatment container, a heating device that heats an inside of the treatment container; and a spray nozzle disposed in the treatment container, the spray nozzle spraying into the treatment container the surface cross-linking agent supplied from a surface cross-linking agent supply source in an exterior of the treatment container through a supply pipe. In a flow path in the spray nozzle spanning from an entrance of the spray nozzle to a spray exit, a point whose opening cross-section is smallest in a flow path through which a fluid passes is the spray exit. A product with further stable physical properties can thereby be acquired.

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 device and method for loading pellets. A funnel includes a means for loading pellets into a reactor tube, and a means for quickly and easily measuring the elevation of pellets in the reactor tube while the reactor tube is being loaded. A vacuum-assist device may be used to pick up and transfer a desired volume of porous pellets while removing dust from the porous pellets.

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 reactor system comprising a first reactor assembly, a first pressure transition assembly, a second reactor assembly and a second pressure transition assembly.

A device for loading pellets into reactor tubes includes a portable loading box with a bottom wall defining an opening, a loading tube projecting downwardly from the opening, and a movable dam for dividing said loading box into separate chambers.

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).