In an FCC apparatus and process gas and catalyst exit from a riser, are disengaged from each other and the catalyst is stripped. Product gases are evacuated from catalyst that can over crack the product gases to other undesired products. A baffle in or above the stripping section can direct product gases into a passage that evacuates the product gases to product recovery in isolation from the catalyst.

In an FCC apparatus and process gas and catalyst exit from a riser, are disengaged from each other and the catalyst is stripped. Product gases are evacuated from catalyst that can over crack the product gases to other undesired products. A baffle in or above the stripping section can direct product gases into a passage that evacuates the product gases to product recovery in isolation from the catalyst.

The present disclosure relates to fluid bed processes that utilize silica particles as a fluidization aid. The process comprises reacting one or more reactants in a reactor comprising a fluid bed to form a product. The fluid bed comprises a catalyst composition comprising a catalyst and an inert additive composition comprising silica particles from 0.5 wt % to 30 wt %, based on the total weight of the catalyst composition. The silica particles are discrete, inert particles that are mixed with the catalyst in the fluid bed.

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.

The invention provides an improved system for separation technology intended to reduce unwanted catalyst/thermal reactions by minimizing contact of the hydrocarbons and the catalyst within the reactor.

The present invention relates to a three-phase reactor for the reaction of a hydrocarbon feedstock with hydrogen and to a hydroconversion process, for example of H-Oil™ type, employing it, comprising a chamber with an upper end and a gas/liquid separation device comprising: a recycle cup, above the catalytic reaction zone and delimiting, with the upper end, a recycle zone, comprising a cylindrical upper part extended by a lower part of decreasing section and of variable angle of inclination, provided with vertical pipes for the passage of a gas/liquid mixture originating from a catalytic reaction zone, and having a fixed angle of inclination β of between 50° and 85° with respect to the axis of the cylindrical part, a pipe for recycle of the liquid at the apex of the lower part, in fluidic communication with the lower end of the chamber by recirculation means.

Provided are a method for producing hydrocyanic acid and a device for producing hydrocyanic acid, which can improve a yield of the hydrocyanic acid in a vapor phase contact ammoxidation reaction of methanol. The method for producing hydrocyanic acid includes a step of obtaining hydrocyanic acid by a vapor phase contact ammoxidation reaction by supplying a raw material gas including methanol in a fluidized bed reactor (1) through a raw material gas disperser (7) disposed in the fluidized bed reactor (1) and bringing the methanol into contact with ammonia and oxygen in the presence of a metal oxide catalyst, in which the raw material gas disperser (7) has one or more pores for releasing the raw material gas into the fluidized bed reactor (1), and the number of pores per unit cross-sectional area of the fluidized bed reactor (1) is 10 to 45 pieces/m.sup.2.

A control system for automatic operation of a fluid catalytic cracking unit is shown. The control system includes a reactor severity control device operable to modulate a temperature affecting volume gain within the fluid catalytic cracking unit and a controller. The controller includes a processing circuit configured to calculate the volume gain within the fluid catalytic cracking unit by comparing a volume based on one or more input oil feeds to the fluid catalytic cracking unit to a volume of one or more output oil products of the fluid catalytic cracking unit. The processing circuit is further configured to use a neural network model to generate a target severity predicted to optimize the volume gain within the fluid catalytic cracking unit. The processing circuit is further configured to operate the reactor severity control device using the target severity to modulate the temperature affecting the volume gain within the fluid catalytic cracking unit.

Device for metering powder, in particular in clean-rooms, which includes a vessel containing powder and a sealing head with a septum for the vessel, wherein the sealing head is connectable powder-tight with the vessel and the septum powder-tight with the sealing head and the device further includes a vessel holder, which serves to hold the sealing head of the vessel, and the vessel with its opening points downwards, so that the powder can flow out of the vessel, wherein a gap is provided between the sealing head and a holding bowl of the vessel holder, in which a gas flow between the holding bowl and the sealing head can be created. The invention also relates to a use of the device and a metered addition method.

Methods and apparatus are disclosed for removing catalyst, absorbents and other materials from a reactor, guard bed, or other refinery or petrochemical vessel via a robotic or remotely operated device. A vacuum hose is connected to the device for removing the material from the vessel for ex-situ regeneration or disposal. The device moves around on the surface of the catalyst using motorized screws that grip to the catalyst material. The device is powered by hydraulic, pneumatic or electric motors attached to the frame of the device with supply and return hoses extending in and out of the vessel in line with the vacuum hose.