Abstract:
Processes for producing synthesis gas employ a catalyst composition comprising a reducible metal oxide, or mixture of such oxides, that is active in catalyzing the conversion of methane and/or other light alkanes, in the absence of gaseous oxygen, to primarily CO and H 2 by a net catalytic partial oxidation (CPOX) reaction. The reduced metal and/or lower valence metal oxide are reoxidized in a separate reaction zone or by alternating syngas and regenerant processes. Preferred catalyst compositions comprise reducible transition or lanthanide metal oxides that are stable at multiple oxidation states, and which can be regenerated to the active (more oxidized) oxidation state using atmospheric air or process steam, either pressurized or under ambient pressure.
Abstract:
The present invention discloses a process for installing a floating platform (20) to the ocean floor using a spoolable tether (15), comprising installing the spooled tether onto the floating platform; towing the floating platform to a site for installation; unspooling the tether; connecting a bottom end connector (45) of the tether to a foundation (75) on the ocean floor; and connecting a top end connector of the tether to the floating platform. A preferred floating platform is a tension leg platform, and the invention includes a novel tension leg platform (TLP) comprising a spooled tether (15) installed thereon. In a preferred embodiment the foundation (75) is a suction anchor (100), and the suction anchor (100) is connected to the bottom end connector (45) prior to unspooling the tether and attached to the ocean floor after unspooling the tether. The floating platform may be installed, moved and re-installed according to the invention.
Abstract:
A computer program, and a method and apparatus for creating the computer program. The computer program is stored on a computer readable medium and is executable by a computer system. The computer system can comprise a front-end for interfacing with a user, and a back-end for performing batch functions. The computer program comprises instructions for performing a function, which requires at least one parameter for its operation. The computer program further comprises instructions for reading the parameter from a parameter cache in the computer system (230). The parameter cache is capable of storing the parameter as an object therein (235). The computer program also comprises instructions for validating the parameter (240) and aborting the function if the parameter is not valid (245), and instructions for loading the parameter from the parameter cache and performing the function in accordance with the parameter if the parameter is valid (255, 260).
Abstract:
A process is disclosed for producing hydrocarbons. The process involves contacting a feed stream comprising hydrogen and carbon monoxide with a catalyst in a reaction zone maintained at conversion-promoting conditions effective to produce an effluent stream comprising hydrocarbons. In accordance with this invention, the catalyst used in the process includes at least a Fischer-Tropsch metal and a promoter selected from the group consisting of molybdenum, tin, gallium, and zinc. The Fischer-Tropsch metal preferably includes cobalt. The catalyst may also include a support material selected from the group including silica, titania, titania/alumina, zirconia, alumina, silica-alumina, aluminum fluoride, and fluorided aluminas.
Abstract:
The present invention features a system and method for circulating catalyst between a reactor system (10) and a regenerator system (34) and a distribution unit (5). The system and method are adapted so that more than one regeneration gas may contact the catalyst, the distribution unit is adapted to select the percentage so as to maintain the reactor system and the regeneration system under a heat balance regime.
Abstract:
A family of supported hexagonal phase mixed metal oxide catalysts are disclosed that have the general formula M2.5LnRh6O13 (expressed as atomic ratios), wherein M refers to Group II elements such as Mg, Ca, Ba, Sr and Be or a Group VIII transition metal that can exist in a +2 oxidation state, such as Ti, V, Mn, Fe, Co, Ni, Cu, Zn, Nb, Pd, Cd and Ta. Ln refers to the rare earth lanthanide group of elements, such as La, Yb, Sm and Ce. This family of catalysts demonstrate unexpected activity for efficiently catalyzing the net partial oxidation of methane in a short contact time reactor, with high selectivities for H2 product.
Abstract:
A molybdenum-loaded crystalline aluminosilicate molecular sieve that exhibits the MFI crystal structure and has a silica-to-alumina ratio of about 50:1 is useful for aromatizing a hydrocarbon feed stream. The crystalline aluminosilicate preferably has an external surface acidity selectively passivated by means of an amorphous silica layer. A process for the aromatization of methane comprises a one- or multi-step process that contacts a feed stream comprising at least methane with a catalyst composition comprising the preferred molecular sieve, at hydrocarbon conversion conditions that include a temperature of 600-800 DEG C, a pressure of less than 5 atmospheres absolute and a Weight Hourly Space Velocity (WHSV) of 0.1-10 h 1, with the external surface acidity of the crystalline aluminosilicate preferably selectively passivated by an amorphous silica layer. C6-plus aromatic hydrocarbons are preferably recovered from the process by means of an intermediate separation step.
Abstract:
A process is disclosed for regenerating a catalyst (60) used in a process for synthesizing hydrocarbons (40). The synthesis process involves contacting a feed stream (10) comprising hydrogen and carbon monoxide with a catalyst (50) in a reaction zone (30) maintained at conversion-promoting conditions effective to produce an effluent stream comprising hydrocarbons (40). The regeneration process involves contacting a deactivated Fischer-Tropsch catalyst (60) with a regeneration gas (70) under regeneration-promoting conditions that include a pressure lower than the mean Fischer-Tropsch reaction pressure, for a period of time sufficient to reactivate the Fischer-Tropsch catalyst (60).
Abstract:
An apparatus and method is disclosed for producing hydrocarbons according to the Fischer-Tropsch process. The apparatus comprises a catalytic distillation reactor (10) where reactants are fed into the catalytic distillation reactor (10) to undergo catalytic reaction to form hydrocarbons. The catalytic distillation reactor (10) is divided into reaction chambers (51-55) and monoliths (61-65) are disposed with said reaction chambers (51-55). A honeycomb monolith (288) preferably includes channels (290)having an axis disposed at a nonzero angle with respect to the axis of a reaction chamber (51-55) containing the honeycomb monolith (228). External heat exchangers (15) are provided.
Abstract:
A computer implemented method for modeling of faulting and fracturing uses "small scale rules" to produce large-scale results. One part of the method is a user interface for inputting deformations, preexisting faults and fractures, and material rock properties. The second part of the software is the code that solves the motion of each point or node in the subsurface volume defined by the user interface. The model may be defined in one of three modes: an aerial mode; a cross-sectional mode; and a 3-D model