摘要:
An integrated hydrotreating and hydrocracking process includes contacting a hydrocarbon oil stream with a hydrogen stream and a hydrotreating catalyst in a moving-bed hydrotreating reactor, thereby producing a hydrocarbon product stream and a spent hydrotreating catalyst; contacting the hydrocarbon product stream with a second hydrogen stream and a hydrocracking catalyst in a hydrocracking reactor, thereby producing a hydrocracked hydrocarbon product stream; processing the spent hydrotreating catalyst to produce regenerated hydrotreating catalyst; and recycling the regenerated hydrotreating catalyst to the moving-bed hydrotreating reactor.
摘要:
The present invention describes a device that firstly allows temporary storage of a certain quantity of catalyst and, secondly, the putting back into circulation of said quantity in the regenerative reforming installations following an interruption in the circulation of the catalyst.
摘要:
Systems and processes for the hydroprocessing of a hydrocarbonaceous feed are provided that utilize a plurality of moving bed reactors. The reactors may be moving bed radial flow reactors. A hydrogen injection point can be provided prior to each reactor by providing a mixer that mixes hydrogen with a hydrocarbonaceous feed, or with the effluent stream from an upstream reactor, to produce a reactor feed stream. Catalyst can be provided from the reaction zone of one reactor to the reaction zone of a downstream reactor through catalyst transfer pipes, and can be regenerated after passing through the reaction zones of the reactors. The moving bed reactors can be stacked in one or more reactor stacks.
摘要:
A pre-refining catalytic hydrotreating process for the desulfurization, demetallization, and upgrading of heavy, sour crude oils operating at a moderate temperature and pressure through the utilization of moving catalyst bed technology.
摘要:
A process for producing a high methane content, synthetic pipeline gas from heavy fuel oils including crude oil, Bunker ''''C'''' residual oil, shale oil, and solubilized coal. The process includes providing a hydrogasification reaction chamber having a hydrogen partial pressure of at least 100 psig and a temperature of 1200*-1500*F. Absorbent inert solids are recirculated from the bottom of the reaction chamber to the top thereof and the heavy fuel oil is introduced into the recirculating solids and both are fed to the top of the reaction chamber. The reaction chamber includes an oil preheat zone having a temperature up to 1000*F., a reaction zone at a temperature of 1200*-1500*F. and a hydrogen preheat zone, also having a temperature of 1200*-1500*F. The solids are moved through the chamber so that the oil is gradually heated to the reaction temperature over a period of at least ten minutes to inhibit the formation of a coke residue. A hydrogen rich gas, containing hydrogen in excess of stoichiometric amounts, is passed upwardly in the reaction chamber and countercurrent to the heavy oil and solids passing downwardly therethrough. A hydrogenation reaction is promoted in the reaction chamber between the oil and hydrogen to produce a mixture which includes volatilized liquids, methane and hydrogen. The mixture is separated into a hydrogasifiable liquid fraction, hydrogen, and the high methane content synthetic pipeline gas. The hydrogen and the hydrogasifiable liquid fraction are circulated back to the reaction chamber, the hydrogen being used as at least a portion of the hydrogen rich gas reacting in the chamber and the hydrogasifiable liquid enters into the hydrogenation reaction.
摘要:
Moving bed hydrocarbon conversion processes are provided for contacting a catalyst moving downward through a reaction zone with a hydrocarbon feed, withdrawing the catalyst from the reaction zone and conveying the catalyst to a regeneration zone wherein the catalyst moves downward. The catalyst is withdrawn from the regeneration zone and passed downward to an upper zone of a particle transfer apparatus wherein the transfer of catalyst from the upper zone through a middle zone to a lower zone is regulated by varying the pressure of the middle zone, the flow rate of gas passing through an upper valveless conduit, and a valve in a lower valved conduit. The catalyst from the lower zone of the particle transfer apparatus is conveyed to the reactions zone.
摘要:
A process and apparatus are shown for the improved utilization of catalysts in a hydrocracking system. The method comprises passing a hydrocarbon oil feedstock, preferably a heavy hydrocarbon residuum, upwardly through a particulate catalyst bed in a reaction zone maintained at high temperature and high pressure, together with hydrogen-containing gas; recycling a portion of the upwardly flowing oil together with a portion of the particulate catalyst to the bottom of the reaction zone while simultaneously pulverizing the minor proportion of the particulate catalyst to a fine powdered catalyst; and passing the recycled oil and finely powdered catalyst upwardly through the particulate catalyst bed in the reaction zone, with at least a portion of the powdered catalyst leaving the reactor with the treated effluent. Apparatus for practicing this process comprises a reactor vessel having a vertically mounted recycle conduit mounted therein, and pulverizing means, preferably a modified axial turbine high-shear mixer communicatingly connected to the bottom of the recycle conduit, for pulverizing recycled particulate catalyst to a fine powdery catalyst. Additionally, a pump is mounted to the outlet of the high-shear turbine mixer to provide positive fluid flow.
摘要:
Direct fired charge heaters are deleted from the equipment needed to start an exothermic catalytic hydrocarbon conversion process by changing the flow through the high pressure heat exchangers normally used to recover heat from the reactor effluent. Instead, heat produced in a product fractionation heater is added to a reactor effluent recirculation loop containing the reactor by the use of these heat exchangers. The heat exchanged reactor effluent is returned to the reactor with a recycle pump until the temperature of this charge stream is sufficient to initiate the exothermic reaction and thereby produce a hot effluent stream which is used to heat fresh charge material.
摘要:
An integrated hydrotreating and hydrocracking process includes contacting a hydrocarbon oil stream with a hydrogen stream and a hydrotreating catalyst in a moving-bed hydrotreating reactor, thereby producing a hydrocarbon product stream and a spent hydrotreating catalyst; contacting the hydrocarbon product stream with a second hydrogen stream and a hydrocracking catalyst in a hydrocracking reactor, thereby producing a hydrocracked hydrocarbon product stream; processing the spent hydrotreating catalyst to produce regenerated hydrotreating catalyst; and recycling the regenerated hydrotreating catalyst to the moving-bed hydrotreating reactor.