Abstract:
The present invention relates to a marine lubricating oil composite additive. Based on the total weight of the composite additive, said marine lubricating oil composite additive comprises: 25-45% sulfonate detergent with superhigh base number, 40-60% phenolate detergent with low base number, 0-8% dispersing agent, 0-4% antiwear agent, and 10-20% Group I base oil with high viscosity index which is selected from the group consisting of 400SN, 500SN and 600SN. The composite additive according to the present invention can satisfy the requirement of BOB system about the viscosity and base number, and can be blended with many system oils under a number of domestic and foreign brands so as to provide cylinder lubricating oils with different base numbers. The composite additive according to the present invention has good adaptability and excellent performances in terms of antiwear, antioxidization and high temperature detergency, which meet the requirement of marine engines about the performance of cylinder lubricating oils. Moreover, the composite additive according to the present invention is able to maintain good stability in the base oil of the system oil as well as good compatibility, and thus the lubricating performance of the cylinder lubricating oil will not be adversely affected.
Abstract:
A selective nickel-based hydrogenation catalyst and the preparation thereof, characterized in that: provided that the catalyst is weighed 100%, it comprises nickel oxide 14-20% as active component, lanthanum oxide and/or cerium oxide 2-8%, and VIB element oxide 1-8% as aids, 2-8% silica, 1-8% alkaline earth metal oxides, and alumina as the balance. The catalyst specific surface area is 60-150 m2/g, and the pore volume is 0.4-0.6 ml/g. The catalyst has good hydrogenation performance, especially impurity and colloid resistance and hydrogenation stability. The catalyst can be applied to the diolefin selective hydrogenation of medium or low-distillate oil, especially of the full-distillates pyrolysis gasoline.
Abstract:
A method for reactivating alkanolamine solution, including the following steps: performing, by using a hydrogen phosphate ion remover, a first adsorption treatment on a to-be-reactivated alkanolamine solution to obtain a first solution and an adsorption system; performing, by successively using a hydroxide ion exchange resin and a methyldiethanolamine cation exchange resin, a second adsorption treatment on the first solution to obtain a second solution; performing a first mixing treatment on an ammonium sulfate solution and the adsorption system to obtain a third solution and a to-be-regenerated remover; performing a second mixing treatment on a hydrogen ion exchange resin and the third solution to obtain a fourth solution; and performing a third mixing treatment on the second solution and the fourth solution to obtain a reactivated alkanolamine solution.
Abstract:
A multiphase flow metering system, comprising a magnetic resonance multiphase flowmeter and a manifold system, comprising a plurality of control valves and a connection pipeline, for controlling a fluid to flow through the magnetic resonance multiphase flowmeter; and the magnetic resonance multiphase flowmeter comprising a plurality of magnet structures, distributed at intervals in an axial direction and are configured to magnetize a fluid, and further comprises two measurement antennas, distributed at intervals in the axial direction and are configured to perform phase state detection on the magnetized fluid. A multiphase flow metering method is implemented with the multiphase flow metering system, and comprises: measuring a phase state parameter of a fluid, the phase state parameter being a content or speed parameter of a target phase state; collecting reflected signals of the fluid using two measurement antennas; and reading the phase state parameter of the fluid according to collected reflected signals.
Abstract:
The present invention provides a system for on-line flame photometric detection of the content of sulfur-containing compounds in natural gas. The system comprises a sampling device, a depressurization system, a chromatographic column system and a flame photometric detector; wherein the chromatographic column system is provided with a carrier gas input line, and a chromatographic column, comprising a boiling point column and a sulfur column, is provided in the chromatographic column system; the output port of the sampling device is in communication with the input port of the depressurization system through a first delivery pipeline; the output port of the depressurization system is in communication with the input port of the boiling point column through a switchable connecting pipeline; the input port of the boiling point column and the input port of the sulfur column are each connected to the carrier gas input line through a switchable connecting pipeline; the output port of the boiling point column is in communication with the input port of the sulfur column through a switchable connecting pipeline; the output port of the sulfur column is in communication with the input port of the boiling point column through a switchable connecting pipeline; and the output port of the boiling point column and the output input port of the sulfur column are each connected to the input port of the flame photometric detector through a switchable connecting pipeline.
Abstract:
The present application provides a porous carbon material and a preparation method and application thereof, which includes following steps: choosing a distillate of ethylene tar in a range of 250° C.˜550° C.and performing hydrogenation treatment on the distillate to obtain hydrofined ethylene tar; performing pre-carbonization treatment on part of the hydrofined ethylene tar to obtain coke; mixing the remaining hydrofined ethylene tar and the coke to form a mixture, and performing activating treatment on the mixture to obtain the porous carbon material. The present application can realize the preparation of high purity porous carbon with simple preparation process and low cost.
Abstract:
Disclosed is a carbon-dioxide-responsive self-thickening intelligent fluid based on supramolecular self-assembly, which comprises a Gemini surfactant, a single-chain amide molecule having a tertiary amine head group and water, wherein the Gemini surfactant and the single-chain amide molecule are self-assembled to form a vesicle structure dispersed in water, with a hydrophilic head group being located outside and a hydrophobic tail group located inside. The method for preparing the carbon-dioxide-responsive self-thickening intelligent fluid of the present invention is simple, the injection viscosity is low, and the fluid is converted into a gel when encountering carbon dioxide, so that the viscosity is greatly increased.
Abstract:
The invention provides a method and an apparatus for determining an integrated exploitation approach for a shale and adjacent oil reservoirs. The method includes: determining a thickness of an effective shale, a top effective boundary and a bottom effective boundary of adjacent effective oil reservoirs; determining a maximum seepage radius of each of the adjacent effective oil reservoirs to the effective shale; determining a well pattern; determining a well completion approach; and determining a total number of perforation clusters of gas injection wells, a number of perforation clusters corresponding to each of the adjacent effective oil reservoirs, a gas injection amount per unit time of each of the perforation clusters, and a total gas injection amount per unit time of the gas injection wells. The effective shale is in communication with all the adjacent effective oil reservoirs by boring-through of a fluctuating horizontal well or a vertical well.
Abstract:
The present invention relates to a catalyst for propylene polymerization, a catalyst system for propylene polymerization and preparation and use thereof. The catalyst for propylene polymerization comprises: an activated magnesium halide, a titanium compound supported on the activated magnesium halide containing at least one Ti-halogen bond, and an internal electron donor compound selected from one or more of compounds having a structure of below Formula (1), wherein R1 and R6 are each independently selected from a C1-C12 straight or branched alkyl, a C3-C15 cycloalkyl or aryl, and R′ is H, a C1-C5 straight or branched alkyl, or phenyl; R2, R3, R4, and R5 are each independently selected from H, halogen, a C1-C12 straight or branched alkyl, a C3-C8 cycloalkyl, a C6-C15 aryl, or arylalkyl. The present invention can provide a catalyst showing high polymerization reaction activity and excellent stereospecificity, by applying a novel type of internal electron donor.
Abstract:
The present disclosure provides a method for predicting the amount of recoverable oil and gas resources from in-situ conversion of shale. The method can quantitatively evaluate the amount of the recoverable oil resource and the amount of the recoverable gas resource from in-situ conversion of shale with different TOC and Ro and improve the prediction accuracy and efficiency for the amount of the recoverable oil and gas resources from in-situ conversion of shale.