111results about How to "Optimize the market" patented technology

A system and method for providing integrated logistics services. In the system, an electronic trading facility, a logistics services group, a commercial-finance group; and an information-support group are organized and arranged to communicate and exchange information with each other over the Internet in order to provide logistics services to a customer.

The invention discloses a preparation method of a biomass-base polyurethane foam material, belonging to the technical field of chemical industry. The method mainly comprises the following steps: mixing polybasic alcohol liquefier and liquefying catalyst, putting the mixture in a container, heating to 150-200 DEG C, adding biomass waste and industrial lignin, liquefying, and cooling to room temperature to obtain a biomass liquefied product; and mixing the prepared biomass liquefied product, foaming catalyst, foam stabilizer, foaming agent and lignosulphonate into a component A, using isocyanate as a component B, mixing the component A and component B in a mixing vessel, stirring at 20-40 DEG C at 8000-14000 rpm for 5-30 seconds, pouring the mixture into a die, naturally foaming for 5-60 seconds, standing at 80-120 DEG C for 8-24 hours, and storing at room temperature for 8-24 hours until the mixture is sufficiently aged and formed. The invention can obviously improve the properties of the biomass-base polyurethane foam.

The method of utilizing cracked C5 fraction includes the first dimerizing cyclopentadiene in the cracked C5 fraction into dicyclopentadiene, separating dicyclopentadiene, selectively hydrogenating diene in the residual material into monoene and directly converting olefine to produce ethylene and propylene. The method may have etherification reaction before or after olefine conversion to produce methyl tert-amyl ether product and high purity isoamylene product further. The method may include a full hydrogenation process to produce pentane, which may be used as cracked material in a main cracking furnace or separated into n-pentane produce and isopentane product. The method is flexible and practical.

The invention aims at disclosing a perilla frutescens salad dressing and a preparation method of the perilla frutescens salad dressing. The perilla frutescens salad dressing with perilla frutescens nutrition and special flavor is prepared mainly by the raw material of dregs obtained after oil expression of perilla frutescens seeds and auxiliary materials such as fresh eggs, fresh milk and salad oil. The perilla frutescens salad dressing product prepared by the method has very high nutritive value; the dregs of the perilla frutescens have a large quantity of protein as well as alpha-linolenic acid and the like, so that the perilla frutescens salad dressing has unique flavor and taste, and can be widely used as table sauce for fruit salad, vegetable salad or pastry. The preparation method is easy to operate, and takes dregs of perilla frutescens oil as the raw material for preparing the salad dressing, thus turning waste into wealth and allowing perilla frutescens to have more applications.

The invention provides an intelligent access control system, comprising an electronically-controlled door lock, a power supply device, a master control device, an information acquisition device, an information storage device, an information recognition device and a display; all the information acquisition device, the information storage device, the information recognition device and the display are in communication connection with the master control device, the power supply device is electrically connected with the electronically-controlled door lock and the master control device, the information recognition device includes a facial image acquisition unit, a fingerprint information acquisition unit and a password setting unit, the information recognition unit includes a facial recognition unit, a fingerprint recognition unit and a password verification unit, and the master control device is in communication connection with an intelligent terminal through the 4G (fourth-generation) wireless network. The intelligent access control system is high in safety and intelligence level and is convenient to use.

The invention relates to an extraction kettle apparatus for separating coal tar, and concretely relates to an extraction kettle apparatus for separating coal tar through a mild extraction method. A strong magnetic stirrer is arranged in the center of a top cover, and a temperature measuring port, a pressure measuring port, a material inlet, an extractant inlet, a nitrogen inlet, a nitrogen outlet, a diffusing port, and valves connected with relevant tube ports are uniformly arranged in the circumference of the top cover respectively; an electric lift type lift tube lightweight component discharging system is arranged at the upper right side of the top cover; two hot steam heating coilers and corresponding hot steam inlets are arranged at the center outside a kettle; the material outlets of downward spreading valves are arranged at the outside surface portion of the kettle, and the downward spreading valves are respectively connected with a glass sight cup; three groups of sight glasses are arranged at the center outside the kettle; an interlayer heat insulation layer is arranged at the center outside the kettle; and a steam outlet, a material outlet and a valve are arranged at the bottom of the kettle. The apparatus has the advantages of simple operation, obvious energy saving and consumption reduction, high solvent recovery rate, easy automatic operation, low-carbon clean production, low investment cost, and less discharge of waste residues, the exhaust gas and wastewater.

The invention belongs to methods for preparing dendrocalamus oil powder grease with a microcapsule technology. Mixed wall materials are finely prepared by adopting sodium caseinate and maltodextrin in a compound mode, dendrocalamus oil is used as microcapsule core materials to be prepared, granulation is carried out through a spray drying method, the wall materials are made to coat the surfaces of the core materials, the liquid dendrocalamus oil is converted into powder, the dendrocalamus oil is prevented from being in direct contact with oxygen, light and other factors in external environment, the oxidation rate of the dendrocalamus oil is lowered, and the aim of the tolerance storage of the dendrocalamus oil is achieved. A dendrocalamus oil powder product prepared through the method is extremely high in nutrition value, the content of alpha-linolenic acid is richest, the flavor and the taste are unique, the approaches to application are wide, and the shelf life is long. The preparation method has the advantages of being easy and convenient to operate, continuous in production, safe, free of pollution and the like, and is suitable for the large-scale production of enterprises.

The invention relates to an extrusion die casting method for a thin-wall aluminum alloy automobile engine pump body cover. The method is suitable for obtaining the automobile engine pump body cover which is good in gas tightness and compactness, high in product qualified rate, complex in shape structure and thin in wall. The extrusion die casting method comprises an extrusion die casting step, wherein a quantitative pouring cup is adopted to convey aluminum base alloy melt into a material cylinder chamber of a die casting machine from a heat preservation furnace; a punch of the extrusion die casting machine smoothly propels the aluminum base alloy melt into a die cavity; the process of propelling the aluminum base alloy melt comprises three stages in sequence: according to the first stage, the punch is propelled at extrusion die casting speed, the propelling stroke accounts for 50 percent to 60 percent of the full stroke, and therefore air in a material cylinder runs away, the alloy melt slowly enters the middle segment of the die cavity, and the air runs away and air wrapping is reduced; according to the second stage, the punch is propelled at the die casting speed of a horizontal die casting machine, the propelling stroke accounts for 33 percent to 43 percent of the full stroke, pressing injection is rapidly carried out, and therefore mold filling is completely carried out on the product, and the cold shut is solved through rapid forming; and according to the third stage, pressure maintaining and feeding are carried out, and therefore crystalline grains are compacted, and a casting workblank is obtained.

The invention relates to a cluster resource management and task scheduling method and system based on deep reinforcement learning. The method comprises the steps: placing tasks needing to be operatedin a to-be-scheduled task queue; sequentially processing the tasks in the to-be-scheduled task queue through a resource scheduling management intelligent agent, and generating a scheduling decision according to cluster resource conditions and resource requirements of the tasks, wherein the resource scheduling management intelligent agent is a neural network obtained by training by using a deep reinforcement learning method according to historical task records running on a cluster; and according to the scheduling decision, scheduling the task to a corresponding machine in the cluster for execution. According to the invention, the utilization rate of cluster resources and the throughput rate of the system can be improved, and computer cluster resource allocation can be self-adaptive when thetask load condition changes; according to the method, the task response time can be shorter, the number of cluster machines can be reduced under the condition of the same load, and the method and system have important significance in saving energy and protecting the environment.

The embodiment of the invention discloses a method and device for grading and screening chips and electronic equipment, relates to the technical field of chip grading, and solves the problem that selected chips cannot meet the requirements of high-quality products due to the fact that the chips with qualified indexes are selected from wafers with poor performance and quality to be used by the products. The method for grading and screening the chips comprises the following steps: carrying out wafer acceptance testing (WAT) on a plurality of wafers to obtain first test result data; carrying outwafer testing WS on the chips in the wafers to obtain second testing result data; and classifying the wafers and the chips in the wafers according to the first testing result data and the second testing result data. According to the method, the wafers of different quality grades can be split according to the WAT and WS testing result data, and chips of different qualities can be classified for useby products of different grades during subsequent sealing testing.

The invention relates to a method for producing propylene. The invention mainly aims at solving a problem of low propylene weight yield in prior arts. According to the propylene production method, cracked C5, C4 and ethylene are adopted as raw materials. The method comprises the following steps: a cracked C5 fraction is delivered into a de-cyclopentadiene unit; after reaction separation, a C5 material flow with cyclopentadiene removed is delivered into a selective hydrogenation reactor; under the existences of a hydrogenation catalyst and hydrogen, diolefin is selectively hydrogenated into monoolefine; the obtained monoolefine C5, C4 material and ethylene are mixed; the mixture is treated with an adsorbent; a material flow obtained after adsorption is subjected to a contact reaction with an isomerization catalyst and a disproportionation catalyst, such that a material flow containing a product propylene and unreacted ethylene, C5 and C4 is obtained; and propylene is obtained after separation. With the method, the problem is well solved. The method can be used in industrial production of propylene.

The invention discloses a method for producing granular diammonium phosphate with low concentration of nutrients by tailings, comprising the following steps: (1) adding solid diammonium phosphate, tailings and powdery ammonium sulfate into a mixing tank based on the mass ratio of 100:10:3, adding diluted phosphoric acid, and evenly mixing while stirring to obtain a mixture; (2) pumping the above mixture in a reactor, and introducing ammonia gas in the reactor for neutralization reaction; (3) pressurizing the reaction slurry by a pump, spraying the slurry in a granulation dryer after pressurizing and atomizing by a nozzle, and coating or caking into granules to obtain a granular diammonium phosphate dry material with low concentration of nutrients; and (4) feeding the dry material in a sieving machine, and sieving to obtain the granular diammonium phosphate product with the granule size of 2-4mm. The method in the invention can consume the tailings, enables the phosphorite tailings to be digested in enterprises or prolongs the stockpiling term of a tailing storehouse and is suitable for enterprises producing phosphorite tailings and monoammonium phosphate tailings, and the producedgranular diammonium phosphate with low concentration of nutrients has the advantages of better market, reduced production cost and obvious profits.

The invention relates to a method for recycling tail gas of sulfonyl chloride chlorination in Cmoba synthesis, and belongs to the tail gas absorption and treatment in the chemical field. The method is characterized by comprising the following steps: gaining sulfur dioxide and hydrogen chloride which are generated in the reaction; carrying out two-stage absorption on the hydrogen chloride by water to obtain the hydrochloric acid containing little sulfur dioxide, wherein the hydrochloric acid containing little sulfur dioxide is utilized in the alkylation step of the Cmoba preparation process; carrying out two-stage absorption on the rest sulfur dioxide through ammonia water to prepare the mixed solution of ammonium hydrogen sulfite and ammonium sulfite; and concentrating the obtained ammonium salt solution which is directly used as a reducing agent. By adopting the method, the gases, namely, hydrogen chloride and the sulfur dioxide, produced in the Cmoba chlorination process can be effectively recycled, so that the emission of harmful tail gas can be reduced, and the volume of drained wastewater in the Cmoba alkylation process is also reduced; simultaneously, the mixed solution of the byproducts, namely, ammonium hydrogen sulfite and ammonium sulfite, is used as the reducing agent which is in a good market prospect; and the method is simple in equipment, mild in technological condition and convenient to operate.

The invention relates to a clamping fixture for robot parts. The positioning frame is U-shaped; the upper end of the positioning frame is provided with a positioning block; the upper end of the positioning frame is provided with a sliding groove; There is a connecting plate; the connecting plate passes through the sliding groove and is connected with the slider block on the positioning frame, and the sliding block is slidably set in the sliding groove by pushing the cylinder; the positioning block and the sliding block are arranged correspondingly; There is a support cylinder on the fixed block; one end of the block is connected with the support cylinder, and the other end is rotatably connected with the fixed block; an inclined surface is provided on the block; a support plate is provided at one end of the bottom plate; a compression cylinder is provided above the support plate; The tight cylinder is connected to the pressure plate through the support plate; the lower end of the pressure plate is provided with an arc pressure block. The structure of the invention is simple and practical, and the operation is convenient. It can fix various robot parts with different shapes, and improves the processing efficiency and precision of the robot parts. .

A production process of a brake pad is characterized in that matching and weighing are carried out on friction materials; steel backing cleaning and shot blasting are carried out; glue is sprayed to a steel backing; after the friction materials and the steel backing are pressed through a press, an electrothermal blowing drying box is used for heating treatment, polishing treatment and plane grinding; grooving and chamfering are carried out according to needs, and ablation treatment and powder line spraying are carried out on the whole brake pad; accessories are riveted to the brake pad; packaging is carried out after coding. According to the production process of the brake pad, large-scale mechanical production is facilitated, and production and development of the brake pad and market advancement are promoted. The brake pad produced through the process is good in quality and high in performance, and the heat resistance and acid resistance of the brake pad are improved.

The invention relates to a method for preparing rare earth polishing powder and recovering an ammonium salt by using fluorine-containing niobium-tantalum wastewater, wherein the fluorine-containing wastewater is the filtrate obtained by using ammonia water to precipitate tantalum or niobium and mainly contains ammonium fluoride and ammonium sulfate. According to the method, excessive soluble salts of rare earth lanthanum and cerium are added to the wastewater and comprise one or a combination comprising a plurality of materials selected from a sulfate, a chloride, an acetate and a nitrate so as to make the fluorine be completely precipitated, ammonium bicarbonate is added to precipitate the excessive rare earth, filtration is performed to obtain the precipitates such as the rare earth carbonate and the fluorine carbonate, drying, calcination, and crushing grading are performed to obtain the qualified rare earth polishing powder, and the filtrate is subjected to concentration crystallization and centrifugal separation to obtain the corresponding ammonium salt, wherein the ammonium salt can be used as the mine leaching agent of the ion adsorption type rare earth. According to the present invention, the environmental pollution problem of the fluorine and the ammonium in the niobium-tantalum production wastewater is solved while the two products such as the fluorine-containing rare earth polishing powder and the rare earth mine leaching agent are developed, such that the double purposes of the higher value application of the substance and the environmental protection are achieved, and the important significance is provided for the application of the niobium-tantalum production and the rare earth and the development of the environmental protection industry.

The invention discloses a desulphurization method for lead plaster of a waste lead-acid storage battery, and relates to the technical field of desulphurization. The method disclosed by the invention comprises the steps of: carrying out wet desulphurization on the lead plaster by using ammonium carbonate as a desulphurization agent; cycling and stirring a mixture of the lead plaster, water for diluting the lead plaster and the ammonium carbonate between a desulphurization tank and a forced desulphuriser; feeding the desulphurized lead plaster into a smelting system; reusing desulphurization liquid as liquid for diluting the lead plaster; and enabling the reused secondary desulphurization liquid to enter an evaporative crystallization system and outputting ammonium sulfate. According to the method disclosed by the invention, after the desulphurization liquid is reused, salt concentration of the desulphurization liquid is improved, and thus, cost of enabling the desulphurization liquid to enter the evaporative crystallization system is reduced; according to the invention, the ammonium carbonate is used as the desulphurization agent, so that the produced ammonium sulfate has use value; and according to the invention, in the desulphurizing process, the forced desulphuriser which is of a special structure is used, and newly generated lead carbonate particles coating the surface of lead sulphate can be ground and removed, so that the desulphurizing process is guaranteed to be successfully carried out, desulphurizing efficiency is improved, and environment pollution is reduced.

The invention provides a seedling strengthening and rapid propagation method for polygonatum cyrtonema, which comprises the following steps: (1) cutting polygonatum cyrtonema cluster buds into blocks, inoculating a proliferation, seedling strengthening and propagation medium with the blocks for subculture, and carrying out repeated cutting and subculture for multiple times to obtain robust cluster buds; (2) cutting the robust cluster buds into bud tubers with adventitious buds, and inoculating a rooting culture medium with the bud tubers for rooting culture; (3) putting rooted test-tube plantlets in a culture room for hardening under light, taking out the rooted test-tube plantlets from a culture bottle, and washing off the culture medium at the roots of the rooted test-tube plantlets; then, soaking the rooted test-tube plantlets with carbendazim, and after soaking is completed, planting the rooted test-tube plantlets into matrix mesh bags, and watering the rooted test-tube plantlets sufficiently with root fixing water; and finally, culturing the rooted test-tube plantlets in a greenhouse. According to the method, the polygonatum cyrtonema buds are subjected to induced differentiation to obtain the cluster buds, the operation is simple, the culture cost is low, the propagation efficiency is high, tissue culture industrialized production can be achieved, and the method is an important way for excellent germplasm preservation and seedling batch production of polygonatum cyrtonema.

The invention relates to an extrusion die casting method for a thin-walled aluminum alloy automobile engine pump body cover, and the method is suitable for obtaining the automobile engine pump body cover which is good in airtightness and compactness, high in product percent of pass, complex in shape and structure and thin in wall. The extrusion die casting method includes the steps that a quantitative pouring cup is adopted to convey aluminum alloy liquid from a heat preservation furnace to a die-casting machine cylinder chamber, an extrusion die-casting machine punch pushes the aluminum alloy liquid steadily to a die cavity, and the aluminum alloy liquid pushing process sequentially includes three stages, namely the extrusion die casting speed, the die casting speed of a horizontal die-casting machine and pressure maintaining, shrink compensation and particle compaction, wherein in the first stage, the pushing range accounts for 50-60% the whole range, so that air in a material cylinder escapes, the alloy liquid enters the middle segment of the die cavity at a low speed, air escapes, and air trapping is reduced; in the second stage, the pushing range accounts for 33-43% the whole range, so that press-shoot is conducted rapidly, a product is fully formed in an inflatable mode, and cold shut is solved through rapid formation; in the third stage, a blank casting is obtained.

The invention relates to a complete set of equipment and a method for separating high-temperature coal tar components via a low-temperature rapid extraction method, and belongs to the complete set of separation equipment and the method for extracting the high-temperature coal tar. The complete set of equipment comprises two kettles and four jars: a coal tar extraction kettle, a light oil solution buffering jar, a filtering jar, refined light oil solution buffering jar, a distillation kettle and a solvent storing jar. The method comprises the following steps: extracting the coal tar to obtain heavy asphalt; filtering a refined light oil solution; and distilling the refined light oil to obtain the refined light oil. The equipment and the method have the advantages that the separation of light and heavy components in the coal tar is realized rapidly; the operation condition is moderate; the separation process is advanced; the separation efficiency is high; and the separation depth and the treatment quantity of the coal tar can be mastered flexibly and controlled selectively by changing an extraction agent, the adding amount of the extraction agent as well as the parameters of the extraction operation. The equipment and the method provided by the invention are simple and convenient to operate, obvious in energy conservation and consumption reduction, high in solvent recovery rate and easy in automatic operation, realize low-carbon clean production and are low in investment cost as well as nearly free of discharging waste residue, waste gas and waste water.

The invention discloses a castor silkworm cordyceps militaris artificial cultivation method. The method comprises the steps of castor silkworm feeding, host silkworm feeding and selecting, cordyceps militaris mother strain selection, host silkworm inoculation and spawn running and the like. Accordingly, by means of liquid strain, larvae of castor silkworms serve as a combination of a host and cordyceps militaris, the active ingredient content of the cultivated cordyceps militaris is high, and particularly the SOD content is higher than cordyceps sinensis. The advantages of research and development of the castor silkworms and the cordyceps militaris in Guangxi are fully utilized, and the method make a contribution to high-quality and cheap health-care products provided for people and healthlevel improvement.

Disclosed is a two-loop three-level closed circulation region energy station system. The whole system is closed-type water circulation. Cold / hot energy is offered to a user through a hot source water loop and a cold source water loop. The hot source water loop offers heat quantity to the user. The cold source water loop offers cold quantity to the user. According to the system, the energy collection, transferring, usage and discarding processes are completed through the primary water circulation, the secondary water circulation and the tertiary water circulation. The primary circulation is also called as hot source station circulation which is used for bringing the external energy such as terrestrial heat, solar energy and industrial and civil waste heat into the system, and excessive heat quantity in the system is released to stratum soil. The secondary circulation is also called as mediate transferring circulation which is used for transferring energy of a hot source station to the user or transferring energy discarded by the user to other users or to a terrestrial heat source station. The tertiary circulation is also called as user circulation which is used for transferring the energy of the system to energy dissipation points of the user, and receiving the energy discarded by the user to the system at the same time.

The invention relates to a method for preparing propylene by using a cracking C5 fraction. The problem of low mass yield of propylene in the prior art is mainly solved. The method for preparing propylene by using cracking C5 fraction, adopting the cracking C5 fraction and ethylene as raw materials, comprises the following steps: sending the cracking C5 fraction to a cyclopentadiene removal unit, reacting, separating to obtain a cyclopentadiene removed C5 flow, sending the cyclopentadiene removed C5 flow to a selective hydrogenation reactor, selectively hydrogenating diolefin in the presence of a hydrogenation catalyst and hydrogen to obtain monoolefin, mixing the obtained monoolefin C5 material with ethylene, processing by an adsorbent, allowing the obtained adsorption flow to contact and react with a disproportionation catalyst to obtain a flow containing a product propylene, unreacted ethylene and C5, and separating to obtain propylene. The method well solves the problem, and can be used in the industrial production for preparing propylene by using the cracking C5 fraction.

The invention relates to an electricity supply device used in the precise measurer, the sensor, and detector without alternating current and with high energy consumption, belonging to the electricity technique. The invention provides a high energy battery connection device, which comprises a battery sheath, a connection plate, a compressing bar, a compressing disc, a lead, a connection row, sealing stuffing, and compression bolts. Wherein, the battery sheath contains the battery; the outer side of compressing disc has connection row via the compression bolts mounted on the two ends of battery sheath; the connection plate, compressing bar and the sealing stuffing are mounted between the battery sheath and the connection row; and the connection plate is connected to the electrode of battery via the lead to connect the connection row. The invention has simple connection, easy operation and reliable contact, while it can confirm the reliable operation of measurer and underwater sensor and detector.

The invention relates to a cross-linking type polybenzimidazole porous separation membrane. The membrane is made of homopolymer of polybenzimidazole or copolymer of polybenzimidazole; the structural general formula of the homopolymer of polybenzimidazole is as follows: FORMULA; the structural general formula of the copolymer of polybenzimidazole is as follows: FORMULA; the preparation method of the cross-linking type polybenzimidazole porous separation membrane comprises the following steps: dissolving polybenzimidazole in a mixed solvent of more or more of DMSO, DMF and DMAC and THF or n-hexane so as to form a polymer solution with the concentration of 5-40wt%, wherein each solvent in the mixed solvent is proportioned at random or proportioned equally; coating the polymer solution on a glass plate or non-woven fabrics, volatilizing the coated solution in the air for 0-20 min, then dipping in water for 1-60 min so as to form a polybenzimidazole porous separation membrane, wherein the thickness of the membrane is 20-1000 microns; dipping the polybenzimidazole porous separation membrane in a solution containing cross-linking agent and dipping for 0.5-200h so as to obtain the cross-linking type polybenzimidazole porous separation membrane at the temperature of 25-100 DEG C. The cross-linking type polybenzimidazole porous separation membrane disclosed by the invention is applied to material nanofiltration separation process under solvent condition, and the molecular cut off of the separation membrane is 200-2000.

The invention relates to a novel thymalfasin chitosan / beta-cyclodextrin composite microsphere drug delivery system and a preparation method. Chitosan serves as a membrane material, beta-cyclodextrin serves as a clathration material, and a composite microsphere is prepared in a reversed phase suspension-chemical crosslinking method. According to the novel thymalfasin chitosan / beta-cyclodextrin composite microsphere drug delivery system, the composite microsphere carries thymalfasin. According to the novel thymalfasin drug delivery system, the obtained composite microsphere performs good protection and controlled-release functions on the thymalfasin, provides feasibility for oral administration medicines and has good economic benefits and application prospect.

The invention discloses a fermentation method of fresh fructus corni fruit wine with high active ingredient content. According to the method, fresh fructus corni fruits are taken as raw materials andfermented by compound yeast prepared from common dry yeast powder and special dry yeast powder for grape wine by mixing, so that the fresh fructus corni fruit wine is produced; by means of flavoring with honey and aspartame, the fresh fructus corni fruit wine has bright color, mellow taste, clear and bright liquor body and high active ingredient content, has an obvious healthcare function and is excellent healthcare food. The method is low in cost, short in fermentation time and simple to operate, one new fructus corni wine fermentation method is provided for the wine-making industry, application of fructus corni to production is enriched, more importantly, the bottleneck of current market development of the fructus corni is broken, and a new breakthrough point for development, utilizationand industrial development of the fructus corni can be achieved.

The present invention discloses a kind of anti-copying multimedia CD and its producing process. The multimedia CD has stored file system and file data, the file system is a non-standard file system and the file data is incomplete. The non-standard file system can not be distinguished in common computer and its data can not be processed, deciphered and copied. The incomplete file data makes them incapable of being copied, even in professional production line. The anti-copying multimedia CD may be replayed normally while preventing copying effectively.

The invention relates to a multi-generation method and a multi-generation device for preparing methanol, LNG and liquid fuel from coal. The device comprises an integrated system for extracting coal tar from pulverized coal and preparing methane-enriched synthesis gas, a synthesis gas purification system, a system for preparing LNG through cryogenic separation, a methane synthesis system and a coal tar deep processing system. According to the method and the device, multiple industries such as coal chemical products, coal gas, coal oil and the like are coupled and integrated to form a novel coal, oil, gas and chemical multi-generation process, efficient conversion and clean utilization of low-rank coal are realized, the additional value of products is greatly increased, and high technical feasibility and market competitiveness are achieved.