32results about How to "Save operating cost" patented technology

A method for casing job by using a top drive drilling unit is applied to the petrol cementing technique field, and is characterized in that a casing elevator is used for lifting a single casing which is buckled with a casing string oppositely; a top-driven casing device is driven to tightly clamp the single casing; the top drive drilling unit is driven to revolve, which allows the single casing to be connected with the casing string; an air slips of a drill stand is loosed, which allows a top-driven flying ring and the casing elevator to support the single casing and the casing string; the single casing and the casing string are lowered; the air slips of the drill stand is used for fixing the single casing; slurry is poured to the interior cavities of the single casing and the casing string through a chief axis hydrophthalmia of the top drive drilling unit and a central spindle hydrophthalmia of the top-driven casing device; and finally, all the casing strings are lowered to the well bottom. The method has the advantages of reducing working equipments, simplifying working process, being capable of revolving casing string and cycling slurry timely according to the actual needs, increasing the automatic degree of the casing job, and improving the production efficiency and safety.

The invention relates to a novel highly-abrasion-resistant, anti-corrosion and anti-static coating and a preparation method thereof. The coating comprises basic thermosetting resin and a filler, wherein the basic thermosetting resin is modified resin for coatings; the filler is formed through blending and combining one or more of a carbon nano tube, carbon black, graphite, graphene, nano aluminum powder and conductive mica powder with one or more of quartz sand, glass flake, nano silicon dioxide, nano-molybdenum disulfide, aluminium oxide and modified montmorillonite. The coating is directly smeared or sprayed on the surface of a metal outer shell of electronic and electrical equipment, the equipment can be effectively prevented from being corroded by the environment for a long time, and the influence of pad points and electromagnetic interference on the safe, normal and stable use of the equipment is prevented.

Embodiments of the invention provide an application starting method and apparatus, and a terminal. The method comprises the steps of obtaining business information provided by a first application, wherein the business information comprises at least one of the following information: voice information and page information; analyzing the business information to determine a corresponding operation intention; according to the operation intention, matching candidate applications and displaying the corresponding candidate applications; and jumping to a page of a second application for performing display, wherein the second application is the selected candidate application. A user can be assisted to quickly and accurately search out the second application, so that the operation cost of the user insearching for the second application is removed.

The invention discloses a catalyst for preparing light aromatic hydrocarbon by synthetic gas one-step process, and a preparation method and an application thereof. The catalyst comprises a Fischer-Tropsch synthesis catalyst and an aromatization catalyst, wherein the Fischer-Tropsch synthesis catalyst includes an oxide of Fe and an oxide of Mn, and a composite metal oxide can fully improve the high-temperature Fischer-Tropsch synthesis activity; the aromatization catalyst is a modified molecular sieve with HZSM-5 as a carrier and with Mo and Ni double metals as active components, and the aromatization performance can be significantly improved. Through the combination of the two catalysts, series coupling of a Fischer-Tropsch synthesis reaction and an aromatization reaction is achieved, a one-way conversion rate of CO is increased obviously, and at the same time, a technology route for preparing light aromatic hydrocarbon-benzene, toluene and xylene (BTX) by synthetic gas one-step process is exploited. Experiments verify that the conversion rate of CO reaches up to 98% or more, the selectivity of hydrocarbonyl of aromatic hydrocarbon reaches 73% or more, and the selectivity of hydrocarbyl of BTX reaches 53%. The catalyst for preparing aromatic hydrocarbon by the synthetic gas one-step process has the advantages of relatively good catalytic activity, good stability and simple preparation, and has relatively good industrial application prospects.

The invention relates to a hydrotreating method of high-acid and high-calcium crude oil. The high-acid and high-calcium crude oil carries out hydrogenation reaction in a crude oil hydrogenation reaction area; obtained hydrogenation crude oil enters a normal-pressure tower and is fractionated to obtain normal-pressure naphtha, normal-pressure diesel and normal-pressure residue oil, wherein the normal-pressure residue oil and hydrogen gas enter a residue oil hydrogenation reaction area together to carry out the hydrogenation reaction; and reaction products are separated to obtain hydrogenationnaphtha, hydrogenation diesel and hydrogenation residue oil, wherein the hydrogenation residue oil is qualified catalytic cracking feeds. Through the method, after the high-acid and high-calcium crude oil is in hydrotreatment in the crude oil hydrogenation reaction area, acid materials and calcium in the crude oil can be efficiently removed, and therefore, corrosion of the acid materials to the normal-pressure tower can be avoided, and increase of pressure drop of a residue oil hydrogenation catalyst bed caused by calcium deposition can be avoided, and long-period safety operation of the normal-pressure tower and a residue oil hydrogenation reactor can be ensured.

The invention discloses a needle-type solid-phase extraction filter. The needle-type solid-phase extraction filter comprises a shell, and the upper side and the lower side of the shell are provided with an injector nipple connector and a pintle connector which are communicated with an inner cavity of the shell respectively; an upper sieve plate, solid-phase extraction filler, a lower sieve plate and a filter membrane are sequentially arranged in the inner cavity of the shell from top to bottom, the upper sieve plate and the lower sieve plate are each provided with sieve holes of which the hole diameters range from 95 micrometers to 105 micrometers, and the particle size of the solid-phase extraction filler ranges from 110 micrometers to 130 micrometers. According to the needle-type solid-phase extraction filter, solid-phase extraction and membrane filtration are combined in one device for the first time, the operation steps are greatly simplified, the solvent and the filler are saved, and the operation cost is reduced; the needle-type solid-phase extraction filter can be suitable for different samples and solvents and is wide in application range and good in effect.

The invention relates to a recyclable type hydraulic packer and belongs to the field of oil and gas well operation downhole tools. The packer comprises an inner center pipe, an outer center pipe, a releasing claw, a bushing, a balanced connector, an oil drainage sleeve, an upper piston, a lower piston and a slip. The inner center pipe is sleeved with the outer center pipe. The releasing claw is arranged on one side of the outer center pipe. The bushing is arranged on one side of the releasing claw. A shear ring is installed on one side of the bushing through the balanced connector and a guide ring. The recyclable type hydraulic packer can bear the two-way pressure from the upper portion and the lower portion of the packer; 52 MPa high pressure can be borne by a sealing mechanism; when the slip enters a well and is unblocked and taken out, the slip is pressed through a spring and only stretches out when the cone acting force is applied to the slip under the action of the hydraulic force, and thus the advanced setting risks of a conventional packer can be effectively avoided; the packer is designed by adopting an integrated inner center pipe and can be directly connected with an oil pipe, the number of transfer buckle parts is decreased, the structure can be made more compact, the drift diameter is increased, and meanwhile the buckle disengagement risk of transfer buckles is avoided, so that the cost is reduced.

The invention relates to a pluggable oil-layer anti-leakage valve, mainly comprising an upper joint, an outer sleeve, a plate valve and a lower joint and the like. The pluggable oil-layer anti-leakage valve is characterized in that the upper joint is internally provided with a guide head and an elastic claw seat connected with the guide head; the elastic claw seat is in threaded connection with a switch sleeve; a locking claw is connected with the switch sleeve; a locking ring is sheathed on the excircle at one end of the locking claw; the circumference of the outer sleeve is provided with pressure balance holes which have the same quantity with pressure balance holes of the switch sleeve; at least four sealing rings are arranged between the switch sleeve and the outer sleeve; a valve seat is connected in the lower joint under the switch sleeve, and is provided with a valve plate by a pin shaft; and the pin shaft is provided with a return spring. The pluggable oil-layer anti-leakage valve has the advantages that the leakage of completion fluid is reduced, the pollution of an oil layer is prevented, the operating procedure is simplified, the operating time is saved, the operating efficiency is improved and the operating cost is reduced; the anti-leakage valve is designed to be large diameter, so that the conventional pipe column can pass freely; and the plate valve can be opened repeatedly for multiple times by a special tool, and is made of drillable materials, so that when the plate valve can not be opened by the special tool, the valve plate can be fast drilled by a drill bit.

The embodiment of the invention provides a search method and device and a device for search. The method comprises the specific steps that search results corresponding to a search term are acquired; key content corresponding to the search results is acquired; and a dynamic effect corresponding to the key content is output according to the search results in a search result page. Through the embodiment, more and richer information of the search results can be displayed, therefore, operation time, operation cost and network resources needed by a user during search result selection are saved, and search efficiency and user experience are improved.

The invention relates to graphene-based cigarette paper and a preparation method thereof and belongs to the technical field of cigarette materials. The preparation method includes: soaking graphene oxide into a solvent, performing ultrasonic treatment to obtain graphene oxide dispersion liquid, adding cigarette perfume, a humectant and functional auxiliaries into the graphene oxide dispersion liquid, and evenly mixing to obtain a graphene functional compound; applying the graphene functional compound to the surface layer of cigarette paper, and drying to obtain graphene-based cigarette paper;or adding the obtained graphene functional compound in a papermaking preparation procedure, and then using a conventional preparation process to prepare the graphene-based cigarette paper. The graphene-based cigarette paper and the preparation method thereof have the advantages that the difficulty that fragrance carried by the cigarette paper is prone to volatilization loss, cigarette smoke form can be modified by the aid of the characteristics of graphene, and cigarette sensory quality can be improved; in addition, the graphene functional compound can be applied to the cigarette paper throughspraying / spin coating so as to endow the cigarette paper with personalized patterns, and cigarette fragrance / smoke is enriched and regulated while cigarettes are endowed with double perception and experience of vision and smell.

The invention aims to provide a published information pushing method and device. According to the invention, the method comprises the steps of by the instant messaging application in a user device, and in response to detecting the user trigger information publishing operation, sending an information publishing request to a network device, after the network device receives the information publish request, determining the publish time of the target publish information in the information publish request, determining a target visible user group of the target publish information according to the publish time; and enabling the network device to push the target publish information to the friend users in the target visible user group, therefore, the target visible user group of the target publishinformation is determined at the network device end through the publish time, the operation consumption of the user for publshing the information in the social space of the instant messaging application is saved, the target published information is accurately and directionally pushed to the friend users in the target visible user group capable of accessing the target published information, and theaccuracy of pushing the published information to the friend users of the user is improved.

The invention provides a hydrocarbon etherification method which is combined with a catalytic cracking absorbing stabilizing system; after being mixed with the chosen fatty alcohol, the hydrocarbon etherification raw materials are sent into a pre-etherification reactor, and reacts with a pre-etherification catalyst in a contact way; without separation, the reaction products are directly put into catalytic cracking stabilizer after being mixed with the chosen fatty alcohol; during the reaction period in the catalytic cracking stabilizer, the reaction products react in contact with the etherification catalyst for fractionation, separated liquefied gas can be obtained from the top of the stabilizer, while stabilized gasoline containing ether compound is obtained from the bottom of the stabilizer. The method fully makes use of the mass transfer and heat transfer conditions of the catalytic cracking stabilizing system, which does not only reduce the energy and material consumption, but also obtains the stabilized gasoline with low content of olefin, high octane value and qualified vapor pressure; the method has great suitability towards the characteristic that domestic catalytic gasoline has high content of olefin, which can provide more operating flexibility for refineries to produce gasoline of high index.

A lubricating oil injecting device for electric equipment comprises an operating rod, an oil injection bottle, a first control connection rod and a second control connection rod. Two ends are arranged on the operating rod. One end is an installing part, and the other end is a handheld part. The oil injection bottle is detachably installed on the installing part of the operating rod and parallel to the operating rod. The oil injection bottle is provided with an oil injection valve and an oil injection nozzle. The interior and the exterior of the oil injection bottle are communicated through the oil injection valve. The oil injection nozzle is communicated with the oil injection bottle through the oil injection valve. The first control connection rod is transversely arranged above the oil injection bottle. One end of the first control connection rod is connected with the top end of the installing part of the operating rod in a pivoted mode, and the other end of the first control connection rod is arranged over the oil injection valve. The second control connection rod is arranged between the oil injection bottle and the operating rod. One end of the second control connection rod is connected to the first control connection rod, and the other end of the second control connection rod extends to the bottom end of the oil injection bottle. When the second control connection rod is pulled downwards, the first control connection rod is driven to move downwards and abut the oil injection valve, and the oil injection valve makes lubricating oil in the oil injection bottle sprayed out through the oil injection nozzle under the pressure of the first control connection rod; and the lubricating oil injecting device is safe and capable of saving oil and greatly improves work efficiency.

The present invention is process of preparing 1-tertbutyl-3-(2, 6-diisopropyl-4-phenoxyl phenyl) thiourea. The preparation process includes the following steps: 1. the reaction of 4-phenoxyl-2, 6- diisopropyl aniline or its salt, CS2 and one kind of organic alkali or inorganic alkali in solvent to produce corresponding 4- phenoxyl-2, 6-diisopropyl aniline dithio formate; and 2. the reaction of 4- phenoxyl-2, 6-diisopropyl aniline dithio formate and tert-butylamine inside organic solvent to produce 1-tertbutyl-3-(2, 6-diisopropyl-4-phenoxyl phenyl) thiourea. The preparation process of the present invention has less reaction steps, high total yield, simple operation, mild reaction condition and facile cheap material, and is suitable for industrial production.

The invention discloses a method for processing steamed buns long in shelf life and low in glycemic index. The storage stability is improved by wheat germs obtained after extrusion swelling treatment,the wheat germs are smashed and then are added into wheat flour, the defect of insufficient lysine content in the wheat meal is overcome, the amino acid proportion in the wheat meal is balanced, thenutrition value is improved, skin of sorghums are also softened and removed, and the problem is solved that tannin contained in the skin of sorghums affects the nutrition value and taste. The steamedbuns made from raw materials such as skin-removed sorghum flour, wheat germ flour and the wheat flour are closer to commo steamed buns in appearance and taste, the glycemic generation index of the steamed buns is reduced, steam bun semi-finished products are frozen and stored by means of a dough freezing technology, the shelf life is prolonged, the quality and freshness are ensured, and economic benefit is improved. The steamed bun processing method is low in cost and is simple, the taste and health-care function of the steam buns are good, and the steam buns are suitable for healthy people and diabetes patients to eat and are worthy of popularization.

The invention is a universal ticket selling system, able to simplify the whole flow the website terminal of the system, a client can obtain a ticket code with a of ticket business and realize the inforationizing of the whole flow of ticket and card business. After inquiring, purchasing ticket and effectively paying through certain bit number, generated by a computer in a specific mode; and at a special ticket selling terminal, can write the ticket code into a universal digital recording magnetic card or print universal-form ticket information label with bar code, can automatically and rapidly print a ticket by the card or by inputting the ticket code or scanning the bar code at the ticket output terminal of the ticket using site, and can also directly check the code at a special code checking terminal to pass through. After buying the ticket, the client can also make inquiry and confirmation by the ticket code through the united access number of the operating center of the system or through accessing the corresponding ticket WEB server of businessman.

The invention discloses a chemical loop power generation device based on a casing pipe reactor. The device comprises an air separating machine, a first air compressor, the casing pipe reactor, a firstturbine, a second air compressor and a second turbine. An inlet of the air separating machine communicates with an air source, a first outlet of the air separating machine communicates with a nitrogen pipeline, a second outlet of the air separating machine communicates with an inlet of the first air compressor, an outlet of the first air compressor communicates with an inlet of the casing pipe reactor, an outlet of the casing pipe reactor communicates with an inlet of the first turbine, and an outlet of the first turbine communicates with a waste heat boiler; an inlet of the second air compressor communicates with a fresh air source, an outlet of the second air compressor communicates with the inlet of the casing pipe reactor through a pipeline, an outlet of the casing pipe reactor communicates with an inlet of the second turbine, an outlet of the second turbine communicates with the outlet of the waste heat boiler, and a reduction oxygen carrier is arranged in the casing pipe reactor. The chemical loop power generation device has the beneficial effects that the casing pipe reactor is used, acting power generation is carried out while heat is transmitted, and energy consumption ofcarbon dioxide capturing is obviously reduced.

The invention relates to the field of carbohydrates and particularly relates to a preparation method of p-methylphenyl-beta-D-thioacetylgalactoside. The preparation method comprises the steps of adding acetic anhydride and a catalyst at room temperature; adding D-galactose; after the reaction is ended, dropwise adding the reaction liquid into a thiocresol and methylene dichloride solution; after the reaction is ended, carrying out after-treatment to obtain p-methylphenyl-beta-D-thioacetylgalactoside. The method is used for synthesizing p-methylphenyl-beta-D-thioacetylgalactoside through one-step reaction, and is simple in operation, easy to obtain raw materials and capable of saving operation cost and materials.

The invention discloses a high temperature resisting thixotropic anti-fluid-channeling well cementing cement slurry system. The high temperature resisting thixotropic anti-fluid-channeling well cementing cement slurry is prepared from the following components in parts by weight:100 parts of cement, 1 to 4 parts of a thixotropic agent, 8 to 13 parts of micro silicon, 2 to 4 parts of a dispersing agent, 2 to 3 parts of a retarder, 2 to 3 parts of a fluid loss agent, 0.1 to 0.25 part of sodium hydroxide, 0.5 to 1 part of a defoaming agent, 30 to 35 parts of silica sand of180 meshes, 15 to 20 parts of silica sand of 80 meshes and 53 to 60 parts of water. The cement system disclosed by the invention has the following characteristics: firstly, the thixotropy performance is good under high temperature condition and an internal structure is easy to destroy after a machine is shut down and started; secondly, the cement system has good strength characteristics which meets strength requirements of cementing construction; thirdly, the cement slurry has good thickening performance, fluidity energy, sedimentation stability, right angle thickening characteristics and less water loss so as to meetthe requirements of site construction; fourthly, the operation time and cost are saved and technical support is provided for cementing formation which is easy for leak and fluid channeling.

The invention relates to a multifunctional tower capable of supporting an injection head to move and replacing tools and a using method of the multifunctional tower, and belongs to the technical field of oil field equipment. According to the technical scheme, a supporting frame (5) is welded in a top-layer telescopic tower (1), the supporting frame is of a rectangular frame structure formed by welding a plurality of square pipes (21) and square pipes (20) with holes, the square pipes are welded to form two symmetrically-arranged side frames, the number of the square pipes with the holes is four, every two square pipes with the holes form a group, and the two groups of square pipes with the holes are arranged between the two side frames in an up-down parallel mode. A tool suspension assembly is arranged between the two square tubes with holes at the upper part; and a blowout prevention pipe fixing assembly is arranged between the two square pipes with holes at the lower part. The height of the telescopic tower can be adjusted, and the telescopic tower is suitable for various environments; the top-layer telescopic tower is provided with the tool hanging assembly and the blowout prevention pipe fixing assembly which can fix a tool and a blowout prevention pipe and are used for tool replacement, repeated lifting of an injection head is avoided, and operation time and cost are saved.

The invention relates to the field of sugar compounds, in particular to a method for preparing isopropyl-β-D-thiogalactoside. Acetic anhydride and a catalyst are added at room temperature, and galactose is added. After the reaction is completed, isopropyl mercaptan is added. After the reaction is completed, after-treatment is performed to obtain isopropylthioacetylgalactose. Add isopropyl thioacetylgalactose to methanol to dissolve, add sodium methoxide, add acetic acid to neutralize after the reaction is completed, and obtain isopropyl-β-D-thiogalactoside after post-processing. The method of the invention synthesizes isopropyl-β-D-thiogalactoside through a two-step reaction method, has simple operation, readily available raw materials, and saves operating costs and materials.

The invention relates to an environment deployment method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining a to-be-deployed service package in a target deployment request in response to the target deployment request; obtaining a target service package corresponding to the target service; and performing environment deployment by using the to-be-deployed service package and the target service package to obtain a target environment. Through the scheme of the invention, even if a demand side does not know each service on the whole link of the target environment, the deployment of the whole target environment can be completed only through the to-be-deployed service package of the to-be-tested service needing to be replaced by the target environment; through obtaining the target service package corresponding to the target service, the service packages of other services except the to-be-tested service in the target environment can be automatically complemented, it is ensured that an overall link corresponding to the target environment can be normally available, manpower learning and operation cost is saved, and even people with few deployment experience can complete deployment of the target environment.

The purpose of this application is to provide a method and device for publishing information push. This application sends an information publishing request to the network equipment through the instant messaging application in the user equipment in response to detecting that the user triggers the information publishing operation, so that the network equipment receives the After the information release request, determine the release time of the target release information in the information release request, and determine the target visible user group of the target release information according to the release time, and the network device pushes the target release information to the target visible user group The friend user realizes that the target visible user group of the target release information is determined by the release time on the network device side, saves the user's operation consumption of posting information in the social space of the instant messaging application, and also realizes the accurate release of the target information Targeted pushing to friend users in the target visible user group who can access the target release information improves the accuracy of pushing release information to the user's friend users.

The invention belongs to the field of fuel cells, and particularly relates to a preparation method for a nano CT sample of a catalytic layer of a proton exchange membrane fuel cell. The preparation method comprises the following steps of (1) prefabricating a film-coated sample of the catalytic layer of the proton exchange membrane fuel cell into a sample strip with a tip; (2) adhering the sample strip to an objective table and projecting the tip of the sample strip from the objective table; and (3) fixing the objective table adhered with the sample strip to an FIB (Focused Ion Beam) workbench,processing the tip of the sample strip for the first time through an FIB, cutting off a redundant sample area by the FIB, then turning over the objective table adhered with the sample strip by 90 degrees, and processing the tip of the sample strip for the second time to prepare the nano CT sample of the catalytic layer of the proton exchange membrane fuel cell. According to the method, the FIB isused for fine processing, so that the integrity of the structure of the sample of the catalytic layer of the proton exchange membrane fuel cell, particularly the three-dimensional porous structure inthe catalytic layer can be effectively ensured.

The invention discloses a hydrothermal quality-improvement, separation and purification method for unconventional petroleum containing water and sands. A hydrothermal treatment-high temperature in-situ filtration combination technology is adopted to achieve removal and separation of water and sands from the unconventional petroleum, raw oil purification and hydrothermal quality improvement, especially improve the pipeline transportation performance. The method fully uses the characteristics of low viscosity and good fluidity of unconventional petroleum heat-modified oil, and no addition of anysolvent in the whole process effectively reduces energy consumption and environmental pollution.

The invention relates to the field of sugar compounds and in particular relates to a method for preparing 2,3,4,6-tetra-O-benzyl -D-galactose. The method comprises the steps of preparing benzothiazolylthioacetyl galactose from galactose in the presence of acetic anhydride, catalysts and 2-mercaptobenzothiazole, preparing benzothiazolylthiotetrabenzyl galactose from benzothiazolylthioacetyl galactose in the presence of potassium hydroxide and benzyl chloride, and preparing 2,3,4,6-tetra-O-benzyl -D-galactose from benzothiazolylthiotetrabenzyl galactose in the presence of N-bromosuccinimide. The method has the beneficial effects that 2,3,4,6-tetra-O-benzyl -D-galactose is synthesized by a three-step reaction method, so that the purity and yield of the product are effectively increased; the method is simple to operate; the raw materials are accessible; the operating cost and the materials are saved.

The invention relates to the field of sugar compounds, in particular to a preparation process of isopropyl-β-D-thiogalactoside. Acetic anhydride and a catalyst are added at room temperature, and galactose is added. After the reaction is completed, isopropyl mercaptan is added. After the reaction is completed, after-treatment is performed to obtain isopropylthioacetylgalactose. Add isopropyl thioacetylgalactose to methanol to dissolve, add sodium methoxide, add acetic acid to neutralize after the reaction is completed, and obtain isopropyl-β-D-thiogalactoside after post-processing. The method of the invention synthesizes isopropyl-beta-D-thiogalactoside through a two-step reaction method, has simple operation, readily available raw materials, and saves operating costs and materials.

The invention provides a composite myriameter submersible, which belongs to the technical field of ocean engineering, is good in expansibility, can carry a multi-task operation tool, has multiple operation modes, and can finish region search, fixed-point observation and underwater control operation only by one operation mother ship and one set of arrangement system. The composite myriameter submersible comprises an underwater autonomous submersible, a remote control unit and an underwater operation unit; the remote control unit comprises a relay controller and a micro optical fiber, one end ofthe micro optical fiber is connected to the relay controller, and the other end of the micro optical fiber is detachably connected to the top of the underwater autonomous submersible; the underwateroperation unit comprises a carrying frame detachably connected to the bottom of the underwater autonomous submersible, an underwater operation tool and a power source are carried on the carrying frame, the middle of the carrying frame is filled with a combined buoyancy block composed of a plurality of buoyancy blocks, and buoyancy provided by the combined buoyancy block is equal to the overall gravity of the underwater operation unit.

The invention relates to the field of saccharide compounds, particularly a method for preparing 2,3,4,6-tetra-oxy-benzyl-D-galactopyranose. The method comprises the following steps: preparing benzothiazolyl thioacetyl galactose from galactose under the actions of acetic anhydride and a catalyst 2-mercaptobenzothiazole; preparing benzothiazolyl thiotetrabenzyl galactose from the benzothiazolyl thioacetyl galactose under the actions of potassium hydroxide and benzyl chloride; and preparing the 2,3,4,6-tetra-oxy-benzyl-D-galactopyranose from the benzothiazolyl thiotetrabenzyl galactose under the action of N-bromosuccinimide. The method synthesizes the 2,3,4,6-tetra-oxy-benzyl-D-galactopyranose by a three-step reaction process, and effectively enhances the purity and yield of the product; and the method is simple to operate and accessible in raw materials, and saves the operating cost and materials.