Abstract: A four valve disc frictionless ball valve includes a spherical valve core assembly, wherein the spherical valve core assembly includes a wedge-shaped valve core. A closed-position valve disc is respectively installed on a pair of closed-position wedge-shaped sides. A closed-position guide key is respectively arranged at the middle positions of the pair of closed-position wedge-shaped sides along an axial direction. A closed-position guide groove is arranged on each closed-position valve disc along the axial direction. An open-position valve disc is respectively installed on a pair of open-position wedge-shaped sides. An open-position guide key is respectively arranged at the middle positions of the pair of open-position wedge-shaped sides along the axial direction. An open-position guide groove is arranged on each open-position valve disc along the axial direction.

Abstract: This invention relates to a surfactant composition, production and use thereof in tertiary oil recovery. The present surfactant composition comprises a cationic surfactant and an anionic-nonionic surfactant, and exhibits significantly improved interfacial activity and stability as compared with the prior art. With the present surfactant composition, a flooding fluid composition for tertiary oil recovery with improved oil displacement efficiency and oil washing capability as compared with the prior art could be produced.

Abstract: Disclosed is a desulfurization catalyst for hydrocarbon oils, comprising a support and at least one metal promoter selected from the group consisting of cobalt, nickel, iron and manganese, the support comprising at least one metal oxide selected from the group consisting of oxides of Group IIB, Group VB and Group VIB metals and a refractory inorganic oxide, wherein the support further comprises at least about 5% by weight of vanadium carbide, based on the total weight of the desulfurization catalyst for hydrocarbon oils. The desulfurization catalyst for hydrocarbon oils shows a good stability, a high desulfurization activity, an excellent abrasion resistance, and a long service life. Also disclosed is a process for preparing the desulfurization catalyst for hydrocarbon oils, and use of the catalyst in the desulfurization of sulfur-containing hydrocarbon oils.

Abstract: The present invention relates to a method for zero-release treatment of brine waste water, comprising: (1) pretreatment; (2) reverse osmosis treatment; (3) advanced oxidation treatment; (4) biochemical treatment; (5) electrodialysis concentration; (6) circulating crystallization. Compared with the prior art, the method for zero-release treatment of brine waste water provided in the present invention realizes zero release or near zero release of waste water, improves salt recovery efficiency, can recover high-quality sodium sulfate, mirabilite and sodium chloride, and turns crystalline salts into a resource; the membrane treatment unit can operates stably in the process for a long operation period at a low cost, and the entire process has high economic efficiency.

Abstract: A fluidized-bed catalyst suitable for the production of halogenated aromatic nitriles includes an active component and a support. The active component is a complex having the following composition expressed in atomic ratio: VPaCrbAcMdOx, wherein A represents at least one metal selected from the group consisting of alkali metals and alkaline earth metals; M represents at least one element selected from the group consisting of Ti, Zr, Hf, La, Ce, Nb, Mo, W, Co, Zn, Fe, Ni, B, Sb, Bi, As, Ga, Ge, Sn, and In; in the XRD spectrum of the catalyst, diffraction peaks are present at 2?=27.8±0.5° and 2?=13.8±0.5°, and the ratio of the height (I1) of the diffraction peak at 2?=27.8±0.5° to the height (I2) of the diffraction peak at 2?=13.8±0.5° is 3.5-6, i.e. I1:I2=3.5-6.

Abstract: A method of wax oil hydrocracking includes the steps of pre-hydrotreating wax oil to obtain a pre-hydrotreated material flow; controlling the pre-hydrotreated material flow and a hydrogen-containing material flow to contact with a first hydrocracking catalyst to obtain a first hydrocracked material flow, and dividing the first hydrocracked material flow into a first hydrocracked material flow A and a first hydrocracked material flow B; controlling the flow B and a hydrogen-containing material flow to contact with a second hydrocracking catalyst to obtain a second hydrocracked material flow, and then separating and fractionating the second hydrocracked material flow to obtain a hydrocracked tail oil product; controlling the flow A, at least a part of the hydrocracked tail oil product, and a hydrogen-containing material flow to contact with a hydrogenation isocracking catalyst to obtain a hydrogenation isocracked material flow, and then separating and fractionating the obtained hydrogenation isocracked material

Abstract: The present invention relates to a process for preparing an aromatic hydrocarbon, and processes for producing p-xylene and terephthalic acid. The process for producing said aromatic hydrocarbon comprises a step of contacting an olefin with a diene in the presence of a catalyst to produce an aromatic hydrocarbon, which is characterized in that, at least a part of said olefin is substituted with dienophile. The reaction pressure can be reduced and the xylene selectivity can be increased with the improvement of the present invention.

Abstract: Provided is a catalyst for preparing cumene and use thereof. The catalyst provided includes a carrier and an active ingredient. The active ingredient includes: ingredient (1), which is palladium element; and ingredient (2), which is one or more selected from a group consisting of alkali metal elements, alkaline earth metals and molybdenum element. When the catalyst is used for preparing cumene by ?-methyl styrene hydrogenation, AMS conversion rate is high, and a product cumene has high selectivity.

Abstract: A resistivity measurement while drilling (MWD) device, including: a transmitting module arranged on an outer surface of a drill collar, for generating an induced current between the drill collar and surrounding formation by inductive coupling; a receiving electrode group including at least two electrodes, for receiving a measured current that reaches the electrode from the induced current through corresponding formation, two electrodes in the receiving electrode group being multiplexing electrodes; a resistivity calculation module configured to be connected to all or a part of the electrodes in the receiving electrode group in a measurement mode of the resistivity MWD device, to calculate the measured current received by a corresponding electrode and obtain resistivity of formation corresponding to the corresponding electrode; and a data transmission module configured to be connected to the multiplexing electrodes in a transmission mode of the resistivity MWD device, for transmitting calculated resistivity to

Abstract: Disclosed herewith a separation device for performing phase separation on a three-phase liquid. The device includes: a housing; at least one pair of longitudinal baffle plates; a flow channel formed between every pair of longitudinal baffle plates; and collection chambers formed between adjacent pairs of longitudinal baffle plates. Each collection chamber is provided with a transverse baffle plate to separate the collection chamber into a first phase and a second phase collection cells. Each flow channel is provided with multiple lateral baffle plates to separate the flow channel into multiple sub-channels. In the areas of each longitudinal baffle plate where the first phase and second phase collection cells are located respectively, said longitudinal baffle plate is provided with a first and a second phase guiding holes in communication with the first phase and the second collection cells respectively.

Abstract: Provided a skid-mounted dispersed particle gel production device, dispersed particle gel and a preparation method and use thereof. The device sequentially comprises, in a delivery direction of a material flow, a jet blending system, a bulk gel chemical crosslinking reaction system, a shearing and grinding system, a storage system. and an intelligent regulation system Rapid crosslinking reaction of bulk gel in a medium/high-temperature oil reservoir and large-scale preparation of multiscale dispersed particle gel can be realised, and the device is applied to continuous production in a complex environment such as a tidal flat, a hill and an offshore work platform.

Abstract: The present invention relates to a method for obtaining a fraction oil yield from petroleum hydrocarbons in a distillation column, wherein said distillation column comprises a fractionation stage, a vaporization section and a stripping stage from the top to the bottom of the distillation column. The method comprises preheating and sending a feedstock oil of petroleum hydrocarbons through a pressure-feeding system at a pressure of 100-1000 kPa higher than the vaporization section pressure of the distillation column, wherein said preheating is conducted in a heating furnace, wherein said heating furnace has an outlet pressure of 100-1000 kPa higher than the vaporization section absolute pressure, and an outlet temperature of 360-460° C.

Abstract: A heteroatom-containing nano-carbon material, based on the total weight of said heteroatom-containing nano-carbon material and calculated as the elements, has an oxygen content of 1-6 wt %, a nitrogen content of 0-2 wt %, a carbon content of 92-99 wt %. In its XPS, the ratio of the oxygen content as determined with the peak(s) in the range of 531.0-532.5 eV to the oxygen content as determined with the peak(s) in the range of 532.6-533.5 eV is 0.2-0.8; the ratio of the carbon content as determined with the peak(s) in the range of 288.6-288.8 eV to the carbon content as determined with the peak(s) in the range of 286.0-286.2 eV is 0.2-1; the ratio of the nitrogen content as determined with the peak(s) in the range of 398.5-400.1 eV to the total nitrogen content is 0.7-1. The heteroatom-containing nano-carbon material shows a good catalytic capability in dehydrogenation of hydrocarbons.

Abstract: A carbonaceous material, based on the total weight of the carbonaceous material, contains 1-99 wt % of a carbon element, 0.2-60 wt % of a magnesium element, 0.5-60 wt % of an oxygen element and 0.1-40 wt % of a chlorine element. The process for preparing the carbonaceous material include (1) Mixing a solid carbon source, a precursor and water to produce a mixture; wherein said precursor contains a magnesium source and a chlorine source; (2) Drying the resulting mixture obtained in Step (1) to produce a dried mixture; and (3) Calcining the dried mixture obtained in Step (2). The carbonaceous material can be used in catalytic oxidation of hydrocarbons.

Abstract: A maleamic acid monomer, and a preparation method and a use of the maleamic acid monomer. The structural formula of the monomer is as follows: formula (1), wherein, R is selected from The maleamic acid monomer provided in the present invention may be used as a comonomer to prepare temperature-tolerant and calcium salt-tolerant polymers.

Abstract: The present invention provides a joint method of cultivating microalgae combined with denitrating an industrial waste gas and a system useful for the same. The joint method comprises the steps of: (1) a step of cultivating microalgae; (2) a separation step of separating a microalgae suspension obtained from step (1) into a wet microalgae (microalgae biomass) and a residual cultivation solution; (3) a NOx absorbing/immobilizing step of denitrating an industrial waste gas with the residual cultivation solution obtained from step (2); wherein the nutrient stream absorbed with NOx obtained from step (3) is used to provide nitrogen source to the microalgae cultivation of step (1). During the microalgae cultivation, EM bacteria is added into the microalgae suspension. The microalgae is preferably Chlorella sp., Scenedesmus sp., Monoraphidium sp. or Spirulina sp.

Abstract: A method of producing a highly-pure aluminum hydroxide, comprising the following steps: (1) reacting alcohol with metal aluminum to produce aluminum alkoxide, then hydrolyzing the aluminum alkoxide with water to produce an aluminum hydroxide slurry and an alcohol, filtering the aluminum hydroxide slurry, washing a resulting filter cake with water to remove the alcohol trapped therein, and drying the filter cake after the water washing to produce an aluminum hydroxide powder, (2) sending the alcohol-containing water produced in step (1) to an alcohol extraction unit for separating water and alcohol through extraction, and sending the separated water back to step (1) for recycling, (3) dehydrating the hydrous alcohol produced by hydrolyzing the aluminum alkoxide in step (1) before using it as the raw materials for reacting metal aluminum with alcohol to produce aluminum alkoxide in step (1).

Abstract: This invention relates to a surfactant composition, production and use thereof in tertiary oil recovery. The present surfactant composition comprises a cationic-nonionic surfactant and an anionic surfactant, and exhibits significantly improved interfacial activity and stability as compared with the prior art. With the present surfactant composition, a flooding fluid composition for tertiary oil recovery with improved oil displacement efficiency and oil washing capability as compared with the prior art could be produced.

Abstract: A process for ion-exchanging an exchangeable-ion containing solid material, characterized in that said process include a bipolar membrane electrodialysis step, which comprises subjecting an aqueous ion-containing solution to a bipolar membrane electrodialysis to produce an acid liquid; an ion-exchange step, which comprises contacting the exchangeable-ion containing solid material with the acid liquid and conducting the ion-exchange to produce a slurry containing the ion-exchanged solid material; a solid-liquid separation step, which comprises subjecting the slurry containing the ion-exchanged solid material to a solid-liquid separation to produce a solid phase and a liquid phase, adjusting the liquid phase to a pH of 4-6.5, and subjecting the pH-adjusted liquid phase to a solid-liquid separation to produce a treatment liquid. Oxalic acid is used in at least one of the bipolar membrane electrodialysis step, the ion-exchange step, and the solid-liquid separation step.

Abstract: The present invention relates to a process for producing aromatics, a process for producing p-xylene and terephthalic acid, and a device for producing aromatics. The process for producing aromatics at least comprises a step of producing C8 olefin from a compound having a lactone group and a step of producing aromatics from the C8 olefin. The process for producing aromatics has the characters of high yield of aromatics and high selectivity to xylene.