Abstract:
The invention relates to a process for preparing a hydrocracking catalyst, comprising (i) contacting a shaped body comprising a zeolite and a binder with an aqueous solution of a hydrogenation metal compound which is a complex or a salt of a hydrogenation metal to deposit the hydrogenation metal onto the shaped body, wherein the aqueous solution comprises an ammonium salt and (ii) calcining the shaped body obtained by step (i).
Abstract:
A signal for controlling output voltage from the driver is modulated (74) by the input signal (58) to the driver, whereby the output voltage tracks the input signal, matching power to demand. The output storage capacitor (45) can be reduced in size because the amount of energy that needs to be stored is reduced. In addition, feedback transistors (62, 71) are paired on the same substrate (75) and cause opposite changes in response to changes in temperature, thereby automatically compensating for changes in temperature without the use of additional components.
Abstract:
The invention relates to a process for producing C2 and C3 hydrocarbons, comprising a) subjecting a mixed hydrocarbon stream comprising a middle distillate to first hydrocracking in the presence of a first hydrocracking catalyst to produce a first hydrocracking product stream, b) subjecting a second hydrocracking feed stream to second hydrocracking in the presence of a second hydrocracking catalyst to produce a second hydrocracking product stream, wherein the second hydrocracking is more severe than the first hydrocracking and c) subjecting a C4 hydrocracking feed stream to C4 hydrocracking optimized for converting C4 hydrocarbons into C3 hydrocarbons in the presence of a C4 hydrocracking catalyst to obtain a C4 hydrocracking product stream, wherein the C4 hydrocracking is more severe than the second hydrocracking, wherein the first hydrocracking product stream, the second hydrocracking product stream and the C4 hydrocracking product stream are fed to a separation system which provides - the second hydrocracking feed stream separated from the first hydrocracking product stream, - the C4 hydrocracking feed stream separated from the second hydrocracking product stream, - a first recycle stream to be recycled back to the first hydrocracking, - a second recycle stream to be recycled back to the second hydrocracking, - a third recycle stream to be recycled back to the C4 hydrocracking, - a hydrogen recycle stream of H2 or H2 and C1 to be recycled back to the first hydrocracking, the second hydrocracking and/or the C4 hydrocracking and - a C2 and C3 product stream of C3- hydrocarbons, wherein the second hydrocracking feed stream is a stream of C12- hydrocarbons excluding C10-C12 hydrocarbons having di-ring structures, wherein the first recycle stream is a stream of C13+ and C10-C12 hydrocarbons having di-ring structures, wherein the C4 hydrocracking feed stream is a stream of C5-, C4- or iC4-, wherein the second recycle stream is a stream of C6+, C5+ or nC4+ 30 wherein the third recycle stream is a stream of nC4+ or C4+.
Abstract:
In aspects, the present disclosure provides a monobore wellbore construction apparatus and method, which in one embodiment may include a series of overlapping expandable liner sections. In one aspect, the overlapping liner sections may be expanded and pressed to provide no gaps along the length of the liner system. In another aspect, the liner sections may include centralizers and/or circumferential seals that provide sealing functions and spaces between the overlapping liner sections. The liner sections may be lined with a suitable sealing material, including an epoxy or may be filled with cement or another desired materials.
Abstract:
A layer (32) having a refractive index less than that of a light guide (30) can be used as a refractive layer, rather than a reflective layer, for increasing light output. The effect is improved if the refractive layer is patterned to correspond to light extracting features (16) on the surface of the light guide. The refractive layer and the light extracting features are on opposed surfaces of the light guide. The refracting layer can be deposited from ink at relatively low cost.
Abstract:
The present disclosure provides a flow meter including a vibrating element configured to be inserted in a measured fluid; a driver circuit to vibrate the vibrating element in its natural frequency of oscillation; one or more additional technology flow meters configured to measure an additional property of the fluid; a data acquisition circuit configured to measure signals effected by the flow of a multi-phase fluid; and a computer suitable to solve non-linear simultaneous equations. The fluid may include gas, oil and/or water. The fluid may also include solids.
Abstract:
The present invention relates to a process for producing LPG and BTX from a hydrocarbon feed comprising polyaromatics, the process comprising subjecting the hydrocarbon feed to a first hydrocracking process step to produce a first hydrocracked product stream; subjecting the first hydrocracked product stream to a first separation step to produce a light-distillate stream; subjecting the light-distillate stream to a second hydrocracking process step to produce a second hydrocracked product stream; and subjecting the second hydrocracked product stream to a second separation step to provide a LPG stream and a BTX stream.
Abstract:
A light shutter (10) and an EL panel (15) are sandwiched between two substrates (11, 25), one of which includes a common front electrode (12). The common front electrode is electrically floating. Patterned rear electrodes (21, 24), on either side of the EL panel, are capacitively coupled to each other by the common front electrode. The rear electrodes can be segmented and the segments addressed individually. Each device is coated with a layer of PDLC (13, 26) and the devices are joined by laminating the layers of PDLC.
Abstract:
A method of producing a purified ester-substituted phenol stream is provided. The method includes a first step of obtaining from a melt transesterification reaction a byproduct stream containing a residual ester-substituted diaryl carbonate, an ester-substituted phenol, a residual melt transesterification catalyst, and a catalyst degradation product. A second step includes treating the reaction byproduct stream to separate ester-substituted phenol and catalyst degradation product from residual ester-substituted diaryl carbonate and residual melt transesterification catalyst to create a light recycle stream containing ester-substituted phenol and catalyst degradation product and a heavy recycle stream containing residual ester-substituted diaryl carbonate and residual melt transesterification catalyst. A third step includes treating the light recycle stream to reduce catalyst degradation product concentration thereby producing a purified ester-substituted phenol stream.
Abstract:
Disclosed herein is a composition comprising: a cross linked polysiloxane/polyimide block copolymer having a siloxane content of 10 to 45 weight percent, based on the total weight of the block copolymer, wherein the cross linked polysiloxane/polyimide block copolymer has a heat distortion temperature measured at 0.44 megaPascals that is at least 5 degrees Celsius greater than the heat distortion temperature of the polysiloxane/polyimide block copolymer prior to cross linking, and wherein the cross linked polysiloxane/polyimide block copolymer has an E' modulus measured at 30 degrees Celsius that is greater than or equal to 115% of the E' modulus measured at 30 degrees Celsius of the polysiloxane/polyimide prior to cross linking. The composition is useful in making covered conductors.