A system and method for converting carbon dioxide into products by contacting the carbon dioxide with catalyst in the presence of hydrogen in a reactor.

A system and method for converting carbon dioxide into products by contacting the carbon dioxide with catalyst in the presence of hydrogen in a reactor.

A sector marker for placement over a tubesheet and defining an opening for performing maintenance on an open tube located below the sector marker, the sector marker positioned over the tubesheet by at least two pins extending below the sector marker and respectively received in tube openings below the sector marker. A device and a method for easily and accurately marking and identifying the location of the tubes in a reactor vessel and for keeping track, in real-time, of the tasks performed on the tubes.

A sector marker for placement over a tubesheet and defining an opening for performing maintenance on an open tube located below the sector marker, the sector marker positioned over the tubesheet by at least two pins extending below the sector marker and respectively received in tube openings below the sector marker. A device and a method for easily and accurately marking and identifying the location of the tubes in a reactor vessel and for keeping track, in real-time, of the tasks performed on the tubes.

A furnace for gas fields, refineries reforming, petrochemical plants, or hydrogen generation by gasification may include: a radiant zone; a convective zone; and a first and second series of pipes through which at least two segregated process gas flows respectively pass. A first process gas flow may enter the furnace through the convective zone and, flowing through the first series of pipes, may leave the furnace through the radiant zone, or alternatively the first process gas flow may enter the furnace through the radiant zone and, flowing through the first series of pipes, may leave the furnace through the radiant zone. At least a second process gas flow may enter the furnace through the convective zone, may pass through the second series of pipes, and may leave the furnace through the convective zone. The second of series of pipes may be made of material resistant to acid gases.

A reformer furnace is provided for use in converting a hydrocarbon feed into a synthesis gas stream. The reformer furnace includes at least one bayonet reformer tube located at least partly within an enclosed volume. The reformer furnace includes a first support arranged to support the second end portion of the at least one bayonet reformer tube against the second endwall of the reformer furnace.

A naphtha reforming reactor system comprising a first reactor comprising a first inlet and a first outlet, wherein the first reactor is configured to operate as an adiabatic reactor, and wherein the first reactor comprises a first naphtha reforming catalyst; and a second reactor comprising a second inlet and a second outlet, wherein the second inlet is in fluid communication with the first outlet of the first reactor, wherein the second reactor is configured to operate as an isothermal reactor, and wherein the second reactor comprises a plurality of tubes disposed within a reactor furnace, a heat source configured to heat the interior of the reactor furnace; and a second naphtha reforming catalyst disposed within the plurality of tubes, wherein the first naphtha reforming catalyst and the second naphtha reforming catalyst are the same or different.

A naphtha reforming reactor system comprising a first reactor comprising a first inlet and a first outlet, wherein the first reactor is configured to operate as an adiabatic reactor, and wherein the first reactor comprises a first naphtha reforming catalyst; and a second reactor comprising a second inlet and a second outlet, wherein the second inlet is in fluid communication with the first outlet of the first reactor, wherein the second reactor is configured to operate as an isothermal reactor, and wherein the second reactor comprises a plurality of tubes disposed within a reactor furnace, a heat source configured to heat the interior of the reactor furnace; and a second naphtha reforming catalyst disposed within the plurality of tubes, wherein the first naphtha reforming catalyst and the second naphtha reforming catalyst are the same or different.

The present invention pertains to improved processes and catalysts for aromatization. The processes generally contacting a feed stream comprising a naphtha fraction having a C.sub.6 to C.sub.8 content with a catalyst pellet composition to form aromatic hydrocarbons. The catalyst pellet composition generally comprises a plurality of cylindrical pellets each pellet comprising a Group VIII metal on a zeolite. The pellets may have (a) a plurality of holes passing through the length of the cylindrical pellets, (b) a dome-shaped top and bottom, and (c) a plurality of semi-circular grooves along the length of the exterior of the cylinder.

Reactor systems, reactor coolant systems, and associated processes for polymerizing polyolefins are described. The reactor systems generally include a reactor pipe and a coolant system, in which the coolant system includes a jacket pipe surrounding at least a portion of the reactor pipe to form an annulus therebetween, at least one spacer coupling the jacket to the reactor pipe, and a coolant which flows through the annulus to remove heat from the reactor pipe. At least one of the external surface of the reactor pipe, the internal surface of the jacket, and at least one spacer, are independently modified, for example by polishing, coating, or reshaping, to reduce the fluid resistance of the coolant flow through the annulus.