1231 results about "Propane" patented technology

The invention relates to the technical field of oilfield chemistry, and discloses a graft modified cellulose filtrate reducer and a preparation method thereof.The preparation method comprises the following steps that modified hydroxyethyl cellulose, 2-acrylamide-2-methyl propane sulfonic acid, dimethyl diallyl ammonium chloride, alkenylated cardanol and N, N '-methylene bisacrylamide are added into deionized water, stirring is conducted, and a mixture is obtained; the preparation method comprises the following steps: adding cellulose into a reaction kettle, stirring for 10-15 minutes at the temperature of 40-60 DEG C at the speed of 300-400 rpm, dropwise adding ammonium persulfate and sodium hydrogen sulfite into a system, and continuously reacting for 4-6 hours to obtain the grafted modified cellulose filtrate reducer. The filtrate reducer disclosed by the invention has good high temperature resistance and salt resistance.

An article for joule heating is described, including a three-dimensional substrate on and / or in which a pyrolyzate of a phenolic resin or polymer forms an electrically conductive carbon network. Such articles may be incorporated in structured materials applications, which may include support, sorbent, and or catalyst components. Also described are methods of fabricating such articles and structured materials, and apparatus comprising same, and methods of use of such articles and structured materials and apparatus for conducting material transformation processes requiring input of heat for their performance, such as CO2 adsorption, methane pyrolysis for hydrogen and carbon production, hydrogen-assisted conversion of CO2 to hydrocarbons, including catalytic conversion of CO2 to olefins, catalytic conversion of CO2 to propane (liquefied petroleum gas), and catalytic conversion of CO2 to renewable natural gas, reverse water gas shift reaction, steam ethane cracking, propane cracking, steam methane reforming, and dry methane reforming.

The invention relates to the technical field of catalyst carriers, and discloses reticular porous spherical aluminum oxide as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) mixing an aluminum source, acid, a pore-forming agent, a surfactant and water to obtain pseudo sol; (2) performing ultrasonic treatment and oil ammonia column forming treatment on the pseudo sol obtained in the step (1) to obtain gamma-Al2O3 spherical gel beads; and (3) aging, washing, drying and calcining the gamma-Al2O3 spherical gel beads obtained in the step (2) to obtain the reticular porous spherical alumina. The spherical aluminum oxide prepared by the method has abundant communicated reticular pore channels, is obviously distributed in mesopore and macropore ranges, is beneficial to obviously improving dispersion and loading of a catalyst in an aluminum oxide carrier and improving the performance of petroleum reforming and propane dehydrogenation, and has industrial production utilization value and commercial value.

The invention relates to a self-heating catalysis propane partial oxidation reforming coupling tube type solid oxide fuel cell system and a preparation method of a catalyst and a carrier thereof. The system comprises a fuel cell tube and a honeycomb type catalyst carrier with the catalyst, the fuel cell tube comprises a cathode layer, an electrolyte tube and an anode layer; the anode layer is located on the inner wall of the electrolyte tube, and the cathode layer is located on the outer wall of the electrolyte tube; the honeycomb type catalyst carrier is mounted at a gas inlet end of a fuel cell tube and is communicated with an inner cavity of the fuel cell tube, the catalyst is a ruthenium-based active component, comprises RuO or metal Ru and is doped with CeO as a dispersing aid, the loading capacity of Ru is 0.5-5wt%, and the proportion of CeO is 0.5-3wt%. The method has the advantages that the mechanical stability is good, the influence of the anode reduction process on the starting time is eliminated, the influence of anode carbon deposition on the performance of the SOFC is reduced, and rapid heating and rapid power generation are realized.

The invention discloses a gradient frame membrane and separation application thereof. An integrated gradient membrane material is constructed in a mode of functional group sharing, metal node sharing or skeleton interpenetration, and target molecule recognition sites are designed by utilizing the advantage that a framework material is easy to modify, so that the separation performance is remarkably improved. The gradient film structure comprises a metal organic-metal organic framework gradient film, a metal organic-covalent organic framework gradient film and a covalent organic-metal organic framework gradient film. The invention introduces a new structure of a metal organic framework-covalent organic framework gradient film and a construction strategy thereof in detail. The preparation method comprises the steps of preparing a bottom layer film structure from bottom to top, then preparing a top layer film structure on the bottom layer film structure, performing post-modification and the like. By designing a specific asymmetric porous structure and adsorption sites, the membrane shows excellent ethylene / ethane, propylene / propane, ion screening and organic matter dehydration separation performance under the dual action of adsorption selection and shape-selective screening.

The invention discloses an alkynyl functionalized hydrogen bond organic framework (HOF) material for efficient reverse separation of propylene / propane as well as a preparation method and application of the alkynyl functionalized hydrogen bond organic framework (HOF) material. The preparation method comprises the following steps: dissolving a tetracarboxylic acid type organic ligand H4L in a benign organic solvent to obtain an H4L solution, then placing the H4L solution in a poor solvent steam atmosphere, and obtaining an HOF material through a gas phase diffusion method; after a low-boiling-point reagent is adopted to carry out solvent exchange on the HOF material, solvent molecules in pore channels of the HOF material are removed through an activation method, and then the alkynyl functionalized HOF material for propylene / propane efficient reverse separation is obtained. The material shows the characteristics of high propane adsorption capacity, excellent propylene / propane reverse separation performance, good cycle performance, easy repair and reproducibility, fills the technical blank of the HOF material in the field of efficient reverse separation of propylene / propane mixed gas, and provides a brand new thought and technical support for research and development in the field of light hydrocarbon separation.

The invention relates to the technical field of thickening agents for fracturing fluids, and particularly discloses a composite fracturing fluid thickening agent for an oil and gas well and a preparation process of the composite fracturing fluid thickening agent. The invention relates to a composite fracturing fluid densifier for oil and gas wells. The composite fracturing fluid densifier comprises 30-50 parts of acrylamide; 20 to 35 parts of 2-acrylamide-2-methyl propane sulfonic acid; 10 to 25 parts of acryloyl morpholine; 3-8 parts of a polyether amine modified organic zirconium cross-linking agent; 2-6 parts of sulfonated konjac gum; 1-5 parts of a salt-tolerant synergistic aid; 0.5-2 parts of a composite initiator; 0.1 to 0.8 part of an inhibitor; and 150 to 180 parts of deionized water. The fracturing fluid thickening agent provided by the invention has the advantages of high viscosity, high temperature resistance and high salt resistance.

The invention belongs to the technical field of catalytic materials and hydrocarbon reforming, and particularly relates to a high-entropy catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing a metal salt solution containing lanthanum, chromium, copper, zinc, manganese, nickel, iron and cobalt ions with a chelating agent and a dispersing agent for reaction, carrying out ultrasonic cavitation treatment to obtain sol, adjusting the pH value, gelatinizing under an oil bath heating condition to obtain a colloidal precursor, drying, and calcining in an air atmosphere to obtain a perovskite type high-entropy oxide precursor; and then treating in a reducing atmosphere to obtain the FeZnCuNiCo perovskite type high-entropy alloy catalyst which contains metal components of La, Cr, Ni, Mn, Fe, Zn, Cu and Co and takes a multi-metal alloy active center of Fe-Zn-Cu-Ni-Co as a main component. The high-entropy catalyst can meet the harsh requirements of high temperature, strong carbon deposition driving force and long-period operation in a propane dry reforming reaction, and is suitable for industrial application scenarios of continuous production of high-temperature synthesis gas.

The present invention relates to the field of catalyst technology, discloses a supported noble metal catalyst and its preparation method and application, the catalyst includes a first carrier and a coating loaded on the first carrier, the raw material composition for preparing the coating includes a second carrier, an active component precursor, an auxiliary agent precursor, a binder and a dispersant; the first carrier is cordierite, mullite or cordierite-mullite; the second carrier is titanium dioxide and / or aluminum oxide; the active component precursor is selected from at least one of a platinum precursor, a palladium precursor and a rhodium precursor; the auxiliary agent precursor is a combination of a cerium precursor, a zirconium precursor and a neodymium precursor; the binder is a mixture of an organic binder, an inorganic binder and a coupling agent. The supported noble metal catalyst has low production cost, high catalytic activity, strong anti-poisoning ability and long service life, can be used for the removal of volatile organic compounds, and is particularly suitable for the removal of flue gases such as ethylene and propane with large air volume and low concentration of organic small molecule hydrocarbons.

Systems herein separate an inlet gas stream containing methane, C2 components, C3 components and optionally heavier hydrocarbons into a volatile gas fraction containing methane and a less volatile hydrocarbon fraction containing C2+ components. The system may include piping, valving, and controls configured to flexibly allow the system to operate in a high ethane recovery mode, a high throughput mode, or in some embodiments, a high propane recovery mode.

The invention discloses a chromium catalyst for propane dehydrogenation and a preparation method and application thereof, the catalyst is composed of an active component Cr2O3, an auxiliary agent, a modifier and an Al2O3-ZrO2 complex, the modifier is Y or Nd, and the auxiliary agent is at least one of Mn2O7, In2O3, CoO, OsO4 and MoO3. The catalyst is high in catalytic activity, strong in anti-coking capability, good in stability, low in cost and high in economical efficiency.

The invention discloses a polyurethane blue light protection optical material and a preparation method thereof. The polyurethane blue light protection optical material is formed by polymerizing a three-component system of isocyanate, a thiopropane trithiol compound and a light absorber mixture, has the advantages of high refractive index and high light transmittance, also has excellent blue light selective protection capability, can perform accurate regulation and control protection on blue light with different wavelengths of 385-500nm, and has good application prospects. The refractive index of an optical lens made of the blue-light-resistant material is larger than or equal to 1.71, the transmittance of short-wave blue light of 385-445 nm is smaller than or equal to 32.2%, the transmittance of long-wave blue light of 475-500 nm is larger than or equal to 70%, the transmittance of visible light of 600-780 nm is larger than or equal to 90%, and a wider material selection range is provided for application of high-end blue-light-resistant optical components.

The invention belongs to the technical field of octafluoropropane purification, particularly relates to a device and a method for purifying octafluoropropane, and provides the following scheme aiming at the problems that gas flows to easily generate bubbles and the bubbles wrap impurities in the processes of octafluoropropane rectification and the like: the device comprises a rectifying tower, the bottom of the rectifying tower is fixedly connected with an extraction liquid box, and a round hole is formed in the outer side of the rectifying tower; a purification outlet is fixedly connected to the interior of the round hole, a spraying head is arranged in the rectifying tower, and an input pipe is fixedly connected to the top end of the spraying head. According to the device and method for purifying the octafluoropropane, the bubble breaking piece accurately breaks bubbles, impurities and the octafluoropropane are thoroughly separated, the spoiler strengthens the separation effect, the impurities are evenly enriched, the liftable suction outlet is matched, the impurities are accurately sucked away, impurity residues in a finished product are greatly reduced, and the product quality is improved. And the purity of the perfluoropropane is assisted to stably reach a high standard.

A process for producing propylene and hydrogen from propane, the process comprising the steps of: a) reacting a mixture comprising propane and bromine to produce a first reaction mixture comprising bromopropane and hydrogen bromide, b) subjecting the first reaction mixture obtained in step a) to at least one separation step to obtain a bromopropane-rich composition and to obtain a hydrogen bromide-rich composition, c) subjecting the bromopropane-rich composition obtained in step b) to a catalytic reaction to produce a second reaction mixture containing propylene and hydrogen bromide, d) subjecting the second reaction mixture obtained in step c) to at least one separation step to obtain a hydrogen bromide-rich composition and to obtain propylene, and e) subjecting the hydrogen bromide-rich composition obtained in step b) and / or the hydrogen bromide-rich composition obtained in step d) to electrolysis to obtain hydrogen and a bromine-containing composition, wherein preferably at least a portion of the bromine-containing composition is recycled back to step a).

The utility model discloses a heat energy utilization system of a C3 and C4 mixed dehydrogenation device, and relates to the technical field of heat energy utilization. According to the utility model, heat generated by a heat pump compressor is respectively used as a heat source of materials extracted from the side lines of a propane tower reboiler and a C3 and C4 separation tower A, heat of an aromatic solvent pipe system is used as a heat source of the reboiler of the C3 and C4 separation tower A, and heat of materials at the bottom of a C3 and C4 separation tower B is used as a heat source to exchange heat with materials at the inlet of the C3 and C4 separation tower A; surplus heat of the dehydrogenation device is fully utilized, steam consumption is reduced, and the purpose of saving energy is achieved.

The invention belongs to the technical field of LNG (liquefied natural gas) cold energy utilization, and provides an LNG gasification station cold energy utilization system coupled with liquid air energy storage, which comprises a first LNG heat exchange assembly, a second LNG heat exchange assembly and a third LNG heat exchange assembly, the second LNG heat exchange assembly comprises a second heat exchange subsystem, and a cold source and a heat source of the second heat exchange subsystem are LNG and power plant warm discharged water correspondingly; the ORC power generation assembly comprises a sixth heat exchanger and a first turbine generator, a cold source of the sixth heat exchanger is LNG, the LNG is output through an LNG outlet of the sixth heat exchanger, and a driving medium flowing part is arranged between a propane outlet of the sixth heat exchanger and the first turbine generator; and the air energy release assembly comprises a liquid air storage tank, and the output end of the liquid air storage tank communicates with a power generation mechanism. Liquefied air energy storage is conducted through LNG, meanwhile, the ORC cold energy power generation system is coupled, LNG cold energy is efficiently recycled, and self-generation and self-use of electric power are achieved.

The invention relates to the technical field of reactors, in particular to a partition annular electric heat tracing radial propane dehydrogenation reactor and a heating method thereof.The partition annular electric heat tracing radial propane dehydrogenation reactor comprises a reactor shell, a reaction cavity is formed in the reactor shell, and a heat preservation layer is arranged in an interlayer in the reactor shell; the radial bed layer structure is arranged in the reaction cavity and comprises an inner cylinder and an outer cylinder which are concentrically arranged, as well as a catalyst bed layer and an electric heat tracing system which are filled between the inner cylinder and the outer cylinder, and the electric heat tracing system comprises a plurality of electric heat tracing assemblies and a power supply module; the temperature control system comprises temperature sensors arranged in the annular heating areas in a distributed mode and a controller. Compared with the prior art, the electric heat tracing assembly is directly buried in the catalyst bed layer, energy is supplied to all the areas through the independent power supply branch circuits, power is independently adjusted through the controller, partition differentiation heat compensation can be implemented according to the difference that heat dissipation of the outer ring is higher and heat absorption of the inner ring is higher, and the radial temperature difference and local temperature fluctuation of the bed layer are remarkably reduced.

A modular utility system integrates clean power generation, thermal management, and security monitoring within a standardized shipping container format. The system comprises a generator set (70 kW-600 kW) configured for operation with multiple fuel sources including natural gas, propane, methane, or hydrogen, coupled to a water-fired absorption chiller utilizing waste heat recovery. A closed-circuit evaporative cooler enhances thermal efficiency without chemical additives. The system incorporates a 360-degree security camera and remote monitoring capabilities for tracking operational parameters. A power distribution panel (460V, 3-phase) supports both building power supply and electric vehicle charging stations. The modular architecture enables scalable deployment through dual-module configurations, with separate power generation and thermal management units. The system provides sustainable, off-grid power generation while maximizing energy efficiency through integrated waste heat utilization and advanced thermal management protocols.

The invention discloses a system and a method for preparing low-carbon olefin through carbon dioxide adsorption and in-situ oxidative dehydrogenation. The invention provides a system and a method for integrating carbon dioxide capture and in-situ oxidation low-carbon alkane (ethane / propane) dehydrogenation, a bifunctional material is composed of an adsorbent and a catalyst, and capture of carbon dioxide and in-situ oxidation low-carbon alkane dehydrogenation can be realized in the same reaction tower, so that the highest one-way carbon dioxide conversion rate can reach 100%, and the conversion rate of carbon dioxide can reach 100%. And meanwhile, the ethylene yield reaches 26%. According to the method, the problems of additional product separation and product gas recycling caused by low carbon dioxide conversion efficiency in the prior art are avoided, and effective heat management is realized, so that the process of integrating carbon dioxide capture and preparing low-carbon olefin by oxidizing low-carbon alkane has more economic advantages.

The invention belongs to the technical field of tertiary oil recovery, and particularly relates to a temperature-resistant and salt-resistant thickened oil viscosity-reducing oil-displacing agent as well as a preparation method and application thereof. The preparation method comprises the following steps: adding nonyl phenol, DMF (Dimethyl Formamide) and epoxy halopropane into a reactor, stirring and dissolving, carrying out a heat preservation reaction, and carrying out reduced pressure distillation to obtain a viscous solid; adding isopropanol into the viscous solid for dissolving, adding 8-aminonaphthalene-1, 3, 6-trisulfonic acid disodium salt, heating and refluxing for reaction, and performing reduced pressure distillation to obtain a viscous solid; and adding distilled water, heating for dissolving, filtering, adjusting the pH value, separating out solid, standing, separating out supernate, centrifuging the lower-layer solid, concentrating, and drying to obtain the product, namely the viscosity-reducing oil-displacing agent for the thickened oil. The viscosity-reducing oil-displacing agent for the heavy oil has the characteristics of low surface and interface tension, low critical micelle concentration and good viscosity-reducing effect.

The present invention relates to a low-Pt-loading propane dehydrogenation catalyst and its application. The catalyst comprises: an alumina support, a main active component Pt, a first promoter Sn, a second promoter, and a third promoter. The second promoter is at least one element in Group IIIA, and the third promoter is at least one of alkali metals or alkaline earth metals. It is prepared by the following method: S1, pretreating the alumina support under vacuum conditions; S2, impregnating the pretreated alumina support into an impregnation solution comprising a Pt precursor, an Sn precursor, a second promoter precursor, a third promoter precursor, and hydrochloric acid; S3, after the impregnation is completed, drying and calcining to obtain a catalyst precursor; S4, pre-reducing the catalyst precursor under H2 conditions to obtain a propane dehydrogenation catalyst. The catalyst provided by the present invention selects appropriate promoters and loadings, improves the utilization rate of the active component Pt, and while reducing the Pt loading, maintains excellent propane dehydrogenation activity and propylene selectivity.

The invention belongs to the technical field of low-carbon dehydrogenation aids, and particularly relates to a heat balance aid as well as a preparation method and application thereof. The heat balance auxiliary agent comprises Al, Ca, Si, Cu and Mn elements existing in an oxide form; wherein the Al2O3, the CaO and the SiO2 jointly form a skeleton structure of the auxiliary agent, and the CuO and the MnO2 are used as active components and are attached to the skeleton structure; the molar ratio of metal elements in the heat balance auxiliary agent is as follows: Al: Ca: Si: Cu: Mn = (49-78.9): (15-25): (1-10): (5-15): (0.1-1). The heat balance additive prepared by the invention shows excellent anti-sintering capability, long service life and stable heat supply performance under harsh reaction conditions such as propane dehydrogenation, and can effectively improve the selectivity of target olefin and reduce the generation of byproducts such as methane.

The invention belongs to the field of catalyst preparation, and particularly relates to a platinum-based bimetallic propane dehydrogenation catalyst and a preparation method thereof. The method comprises the following steps: firstly, weighing beta molecular sieve powder, adding into a concentrated nitric acid solution, stirring and refluxing at high temperature, centrifugally washing, and drying to obtain a dealuminated beta molecular sieve; then calcining the metal additive oxide powder and the dealuminated beta molecular sieve in a reducing atmosphere to obtain composite beta molecular sieve powder; then weighing platinum precursor salt, dissolving the platinum precursor salt in ultrapure water to form a solution, and then adding ethylenediamine for coordination; and finally, impregnating the composite beta molecular sieve with a platinum precursor solution, and carrying out aging, drying and high-temperature treatment to obtain the dealumination beta molecular sieve loaded platinum-based bimetallic catalyst. According to the method provided by the invention, the metal is spontaneously and highly dispersed on the carrier by utilizing the capturing effect of the beta molecular sieve silanol nest on the metal and combining the dynamic migration behavior of the metal under high-temperature reduction. The prepared catalyst shows extremely high propane conversion activity and selectivity at 600 DEG C, and is excellent in stability.

The application discloses an MFI type molecular sieve confined noble metal Ru-based catalyst and a preparation method and application thereof, and the preparation method comprises the following steps: mixing a silicon source, a template agent and water, stirring to hydrolyze the silicon source, and obtaining a mixed solution; mixing a precursor of Ru and a ligand, then adding the mixture into the mixed solution, and then performing hydrothermal reaction at 160-180 DEG C for 72-96 h to obtain a solid sample; and performing step-by-step calcination on the solid sample in a flowing atmosphere. The MFI type molecular sieve confined Ru-based catalyst realizes effective stabilization of the easily-migrated and agglomerated Ru. The catalyst is applied to a propane oxidation reaction, and compared with a supported catalyst directly impregnated on the surface of the MFI molecular sieve, the catalyst has better low-temperature propane oxidation performance and shows excellent high-temperature thermal stability.

The invention belongs to the field of fine chemical engineering, and discloses a method for synthesizing 2, 3-dimethyl-2-isopropyl butyronitrile, which comprises the following steps of: adding an organic amine solvent into a high-pressure reaction kettle, adding sodium amide, sodium iodide and a phase transfer catalyst into the reaction kettle under the protection of nitrogen and in a stirring state, stirring for a certain period of time, and reacting for 2-3 hours to obtain 2, 3-dimethyl-2-isopropyl butyronitrile. Dropwise adding a mixed solution of propionitrile and 2-bromopropane into the reactor, controlling the dropwise adding speed and the reaction temperature, continuously reacting for a period of time after the dropwise adding is finished to obtain a reactant solution, cooling the reactant solution, adding water, standing for layering, collecting an organic phase, distilling the organic phase at normal pressure to recover a solvent, and rectifying at reduced pressure to obtain 2, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3-pentanediol. According to the method, the sodium iodide, the phase transfer catalyst and the organic amine have a synergistic effect, so that the reaction time is shortened, and the yield of the product is improved.

The present technology relates to biofuels, and more particularly, to biomass-based diesel from olefin oligomers. Diesel fuels with cetane number of 49 or greater are prepared by blending hydrocarbons produced by olefin oligomerization with renewable diesel, resulting in a blended fuel that has a lower cloud point than the cloud point of the renewable diesel. A different aspect relates to an integrated process for lipid HDO and olefin oligomerization wherein the propane coproduct of lipid HDO is subjected to dehydrogenation to produce a vapor stream having propylene and hydrogen. The propylene is subsequently oligomerized to iso-olefins and the iso-olefins are combined with the lipid feed for hydrogenation in the HDO reactor.

The invention discloses a novel carbonitriding process for a bearing part. The novel carbonitriding process comprises the following steps: heating the bearing part in a carburizing furnace in a nitrogen protection state; the atmosphere of the replacement carburizing furnace is carbonitriding atmosphere; and carbonitriding and quenching the bearing part in a carburizing furnace under the atmosphere of methanol, propane and ammonia gas. According to the novel carbonitriding process for the bearing part, the phenomena that the surface of a product is oxidized and the color and luster are poor during treatment of a conventional atmosphere carbonitriding process are solved.

The invention discloses a heat transfer composition as well as a preparation method and application thereof. According to the total mass of the composition, the mass ratios of the first component, trans-1, 3, 3, 3-tetrafluoropropene and difluoromethane are x%, y% and z% respectively, the first component is 2, 3, 3, 3-tetrafluoropropene and 1, 1-difluoroethane, the ratios (x, y and z) of the first component, the trans-1, 3, 3, 3-tetrafluoropropene and 1, 1-difluoroethane are located in a ternary phase diagram, the x coordinate of a point A is 23.6%, the x coordinate of a point B is 90.0%, the point coordinates on a curve section AB are (x, 70.06-0.6395 x-0. 001538 x2 and 29.94-0.3605 x + 0.001538 x2), and the coordinates of a point C are (77.6, 0 and 22.4 The GWP of the composition does not exceed 150, the flammability grade reaches A2L, and the composition is a heat transfer composition which is used for replacing propane and is low in global warming potential value, high in refrigeration / heat efficiency and low in flammability and is suitable for refrigeration / heating application.

The invention belongs to the technical field of hydraulic oil preparation, and particularly relates to anti-wear hydraulic oil and a production process thereof. The anti-wear hydraulic oil is prepared from the following raw materials in percentage by mass: 2 to 2.2 percent of an anti-wear complexing agent, 0.002 to 0.003 percent of a demulsifying agent, 0.001 to 0.0015 percent of an anti-foaming agent, 0.03 to 0.04 percent of an anti-rust agent, 0.1 to 0.3 percent of a pour point depressant, 0.3 to 0.5 percent of a dispersing agent and the balance of base oil. According to the anti-wear hydraulic oil disclosed by the invention, a mixture of 500N II type base oil, 100N III type base oil, CTL 4 base oil and trimethylolpropane trioleate is used as base oil, and an anti-wear complexing agent, a demulsifier, an anti-foaming agent, an anti-rust agent, a pour point depressant and a dispersing agent are added into the base oil; the prepared anti-wear hydraulic oil is ensured to have excellent extreme pressure property, thermal oxidation stability and wear resistance.

The invention provides a method for continuously preparing 2-bromoheptafluoropropane, which belongs to the field of preparation of fluorine-containing organic intermediates, and is characterized in that heptafluoropropane and bromine are used as reaction raw materials, continuously pass through a reactor filled with a palladium-manganese bimetallic catalyst, and react at the temperature of 200-300 DEG C to prepare the 2-bromoheptafluoropropane. The used raw materials are cheap and easy to obtain, the catalyst preparation process is simple, the reaction temperature is low, the yield is high, and industrial production is easy.