Processes for the catalytic conversion of alcohols and/or ethers to olefins over zeolite catalysts are described. Self-bound ZSM-5 and metal containing variants, such as Zn ZSM-5, produce high yields of olefins, particularly C3+ olefins, between 250 and 450° C.

An ultra-low-speed rotating low-strain high-filling-rate hydrogen alloy automatic absorption-desorption reaction device includes a shell, a hydrogen storage reaction bed, a motor, a controlling and monitoring system, a wire inlet port, a hydrogen absorption and desorption port, and a universal angle wheel. The reaction bed is circular, rotating at a low speed under driving of a light ultra-low speed motor; facades on two sides of the reaction bed are respectively provided with a transmission shaft and the hydrogen absorption and discharge port which are respectively connected with an ultra-low-speed gear reduction motor or a high-pressure hydrogen storage tank and a hydrogen-consuming device; the reaction bed includes a hydrogen storage metal alloy, a heat-conducting anti-hardening filling material, and a phase change material; a shell of the alloy reaction bed has a heater and an external side surface of a hydrogen storage alloy reaction device has a PLC controlling and monitoring system.

The invention relates to a reaction container for stabilizing the temperature of a liquid mixture substances, the reaction container comprising an upper container part and a lower container part, in which the lower container part has an inner direct means of refrigeration and an outer indirect means of refrigeration in addition to an inner, direct means of heating and an outer, indirect means of heating.

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.

An object of the present invention is to provide a method capable of producing a tetraalkoxysilane with a high energy efficiency and with a high yield. The present invention provides a method for producing a tetraalkoxysilane, the method including: a first step of reacting an alcohol with a silicon oxide; and a second step of bringing a vaporized component of the reaction mixture obtained in the first step into contact with a molecular sieve.

A process for producing olefins may include dehydrogenating a first alkane in a first reactor to produce a first effluent comprising at least one of a first n-olefin or a first diolefin; removing the first effluent from the first reactor; and regenerating the first reactor. The first reactor may include a first dehydrogenation catalyst and a first phase change material.

A method of autothermal oxidative coupling of methane (OCM) utilizes introducing a methane-containing feedstock and an oxygen-gas-containing feedstock into a reactor (10) as a flowing mixture (18) with a space time of 500 ms or less. The reactor (10) contains a catalyst bed (20) of an OCM catalyst that contacts the flowing mixture and wherein the catalyst bed (20) has a heat Peclet number (Pe.sub.h) of from 5 or less, a mass Peclet number (Pe.sub.m) of from 5 or more, and a transverse Peclet number (P) of from 1 or less while contacting the flowing mixture. The methane and oxygen of the feedstocks are allowed to react within the reactor (10) to form methane oxidative coupling reaction products. A reactor (10) for carrying out the OCM reaction is also disclosed.

A method of maintaining a backpressure of a fluidic product is provided. The method includes pressurizing a first reservoir to a first predetermined pressure level using compressed air, delivering the fluidic product to the pressurized first reservoir until a current level of the fluidic product in the first reservoir reaches a first predetermined level, pressurizing a second reservoir to a second predetermined pressure level using the compressed air, delivering the fluidic product to the pressurized second reservoir until a current level of the fluidic product in the second reservoir reaches a second predetermined level, and controlling the backpressure of the fluidic product using the first reservoir and the second reservoir such that a discharge flow of the fluidic product is continuous.

A process for endothermic dehydrogenation including contacting a catalyst material in a moving bed reactor having at least one reaction zone, the moving bed reactor comprising a heat exchanger containing a heating medium, wherein the catalyst material and the heating medium do not contact one another, and wherein at least 50% of the delta enthalpy of the at least one reaction zone is provided by the heat exchanger; and contacting a feedstock comprising hydrocarbons with the catalyst material in the at least one reaction zone of the moving bed reactor under reaction conditions to convert at least a portion of the hydrocarbons to a first effluent comprising a product comprising alkenes, alkynes, cyclic hydrocarbons, and/or aromatics.

An object of the present invention is to provide a method capable of producing a tetraalkoxysilane with a high energy efficiency and with a high yield. The present invention provides a method for producing a tetraalkoxysilane, the method including: a first step of reacting an alcohol with a silicon oxide; and a second step of bringing a vaporized component of the reaction mixture obtained in the first step into contact with a molecular sieve.