A direct decomposition device for hydrocarbons for directly decomposing hydrocarbons into carbon and hydrogen includes a rector containing a catalyst including a plurality of metal particles with an iron purity of 86% or more. The reactor is configured to be supplied with a raw material gas containing hydrocarbons.

A multi-bed catalytic converter comprising at least a first catalytic bed, a second catalytic bed and a heat exchanger arranged between said first bed and said second bed, wherein said heat exchanger is arranged to transfer heat from the hot effluent of the first bed to a cooling medium; said heat exchanger comprises a plurality of stacked round plates, wherein adjacent plates define gaps therebetween, and the effluent of the first catalytic bed and the cooling medium are respectively fed into alternate gaps.

The present invention is directed to a process for feeding a polymerisation catalyst into a polymerisation reactor (7), comprising the steps of: (i) maintaining a catalyst slurry comprising a diluent and a solid catalyst component in a catalyst feed vessel (4); (ii) continuously withdrawing a stream of the catalyst slurry from the catalyst feed vessel (4); and (iii) introducing the withdrawn portion of the catalyst slurry into the polymerisation reactor (7), wherein the catalyst slurry is transferred by using a valveless piston pump (5) from the catalyst feed vessel (4) into the polymerisation reactor (7); the diluent has a dynamic viscosity of from 0.01 to 20 mPas at the conditions within the catalyst feed vessel (4), and wherein the catalyst slurry is transferred along a substantially vertical path downwards from the catalyst feed vessel (4) to the reactor (7).

A reactor includes: a main reactor core including main reaction flow channels through which the raw material fluid flows, and main temperature control flow channels through which the heat medium flows along a flow direction of the raw material fluid flowing in the main reaction flow channel; and a pre-reactor core including pre-reaction flow channels of which an outlet side connects with an inlet side of the main reaction flow channels and through which the raw material fluid flows, and pre-temperature control flow channels of which an inlet side connects with an outlet side of the main reaction flow channels and through which the product serving as the heat medium flows along a flow direction of the raw material fluid flowing in the pre-reaction flow channel.

Alkylene oxides are polymerized in a tubular reactor. The alkylene oxide is continuously introduced into the tubular reactor through multiple introduction points located along the length of the tubular reactor. Monomer flow rates are increased along the length of the reactor to maintain a nearly constant concentration of unreacted alkylene oxide.

Axial reactor for exothermic or endothermic chemical reactions, comprising at least a first catalytic bed and a second catalytic bed operating in series and at least one heat exchanger between the two catalytic beds, wherein the first catalytic bed has a collector bottom having a box-like structure with flat and parallel walls, which are gas-permeable, and a plurality of parallel channels defined between the walls, wherein a first series of said channels collects the gaseous flow exiting the catalytic bed and passing through the first wall, said gaseous flow is directed towards the heat exchanger, and the flow exiting the exchanger is directed towards the second catalytic bed via a second series of said channels of the collector bottom.

A method of revamping vertical converters having a bolt-on flanged pressure shell extension for housing an internal heat exchanger is performed by replacing an existing pressure shell extension with a larger pressure shell extension for housing a plurality of internal heat exchangers.

A reforming device 1 for producing a reformed gas from a methane-containing gas containing methane and carbon dioxide includes a reforming reaction tube 10 containing a catalyst layer 12 filled with a reforming catalyst 12a for reforming the methane-containing gas, and a multilayer pipe 103 for spraying a cooling fluid to an outer peripheral surface of the reforming reaction tube 10 at a position corresponding to a gas inlet of the catalyst layer 12 in a length direction of the catalyst layer 12.

To prevent solidified aluminum chloride from adhering to and accumulating on a pipe and also prevent stress-corrosion cracking in the pipe, a method for producing trichlorosilane includes a cooling step of cooling a discharge gas that is discharged from a fluidized-bed reactor and that contains the trichlorosilane, the cooling step involving causing a fluid to flow through a space (4) inside a side wall (3) of a pipe (10), the pipe being a pipe for discharging the discharge gas from the fluidized-bed reactor, in such a manner that the side wall (3) has a surface (1a) having a temperature of not lower than 110 C.

The present disclosure provides systems and methods for producing olefins via an oxidative coupling of methane (OCM) process. The systems and methods may comprise the use of a staged process comprising at least one non-adiabatic section that is in thermal communication with a heat transfer medium and at least one substantially adiabatic section. The systems and methods may also comprise the use of a diluent stream which may improve methane conversion in an OCM reactor and an ethylene/ethane ratio in a post-bed cracking unit. The methods and systems may further comprise injecting oxygen (O.sub.2) and a paraffin into a gas stream containing a radical transfer agent to provide a reaction mixture. The reaction mixture may be held in a vessel for a time period greater than an auto-ignition delay time (AIDT), such that the reaction mixture may ignite to liberate heat and convert to a product mixture comprising olefins.