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30results about How to "Broad market application space" patented technology

Resourceful treatment method and treatment system for desulfuration wastewater

The invention provides a resourceful treatment method for desulfuration wastewater. The resourceful treatment method comprises the following steps of (1), carrying out pretreatment on the desulfuration wastewater; (2), carrying out phosphate precipitation treatment on yielding water subjected to the pretreatment; (3), carrying out softening treatment on phosphate precipitated yielding water; (4), carrying out membrane separation treatment on softened yielding water, so as to obtain membrane separated produced water which is rich in monovalent ions and membrane separated thick water which is rich in bivalent and / or multivalent ions; (5), carrying out first advanced concentration treatment on the membrane separated produced water, so as to obtain first advanced concentrated produced water and first advanced concentrated thick water; (6), carrying out first evaporation and crystallization treatment on the first advanced concentrated thick water, so as to obtain a low-valent salt and evaporated liquor condensate; (7), carrying out second advanced concentration treatment on the membrane separated thick water, so as to obtain second advanced concentrated produced water and second advanced concentrated thick water; (8), carrying out second evaporation and crystallization treatment on the second advanced concentrated thick water, so as to obtain a high-valent salt and evaporated liquor condensate. The invention also provides a treatment system for implementing the method.
Owner:DATANG INT CHEM TECH RESINST

Ground feature contour extraction method based on ground laser point cloud

According to a ground feature contour extraction method based on a ground laser point cloud provided by the invention, surface-based space measurement breaking through a traditional single-point measurement mode is introduced into urban measurement application, and the urban measurement efficiency is improved. As the most important space entity of a city, the three-dimensional information of ground objects, especially buildings, is the important basic geographic information of the city and has important application value. The whole scanning process is high in data acquisition efficiency, ground control points do not need to be specially arranged, scanning measurement is slightly influenced by the external environment, and the measurement precision is high. Not only is automation degree ofbuilding space data acquisition improved, but also scanned point cloud can express real three-dimensional information and detail structure of a building in detail. Accurate contour information is acquired by means of the point cloud data, and a three-dimensional model of the building is reconstructed. The method has the advantages of high interaction performance, high intelligent degree, high expandability, high extraction speed, high contour extraction precision and the like.
Owner:湖南航天智远科技有限公司

Desulfurated waste water resourceful treatment method and treatment system

The invention provides a desulfurated waste water resourceful treatment method. The method includes the steps that desulfurated waste water is pretreated to remove suspended matter and / or colloid and heavy metal ions; 2, pretreated effluent obtained in the step 1 is subjected to phosphate precipitation; 3, phosphate precipitation effluent obtained in the step 2 is softened, wherein softening comprises the procedures of ion exchange and / or coagulation, and optionally, softening further comprises the procedures of acidification and / or filtration; 4, softened effluent obtained in the step 3 is subjected to membrane concentration; 5, membrane concentration concentrated water obtained in the step 4 is subjected to evaporation and concentration, and evaporation and concentration liquid and evaporation and condensation liquid are obtained; 6, the evaporation and concentration liquid obtained in the step 5 is subjected to crystallization salt separation, and crystallized salt, the evaporation and condensation liquid and crystallized mother liquor are obtained. The invention further provides a treatment system implementing the method.
Owner:DATANG INT CHEM TECH RESINST

Transformer oil base oil and preparation method and applications thereof

The invention discloses base oil of transformer oil and a preparation method as well as application thereof. The preparation method of the base oil of the transformer oil comprises the following steps: 1) performing hydropretreatment on SZ36-1 common cut 3 distillate oil for acid removal; 2) performing furfural refining on the SZ36-1 common cut 3 distillate oil to obtain refined oil, and obtaining furfural removed refined oil after removing furfural; 3) performing denitrification on the furfural removed refined oil, removing nitride slag of the furfural removed refined oil, and obtaining denitrogenized refined oil; and 4) adding clay to the denitrogenized refined oil for clay refining to obtain the base oil of the transformer oil. The preparation method widens raw material source of the base oil of national transformer oil, can provide brand-new base oil of No. 25 transformer oil for the market. In addition, the method has the advantages of simple technological process flow, mild operating conditions, and high yield of target objects; and the base oil of the transform oil has wide market application space.
Owner:CHINA NAT OFFSHORE OIL CORP +2

An adhesive for polyurethane synthetic tracks and application thereof

The invention relates to an adhesive for polyurethane synthetic tracks and application thereof. The adhesive comprises an A component group and a B component group. The weight ratio of the A component group to the B component group is 1:3-8. The A component group comprises a mixture of a plurality of polyether polyols and modified liquid MDI in a weight ratio of 50-80:20-50. The B component group includes 10-40 parts of polyether polyols, 1-10 parts of an environmentally friendly chain extender, 10-40 parts of an environmentally friendly odorless plasticizer, 1-10 parts of pigment, 1-10 parts of fumed silica, 10-50 parts of an ultrafine filler, 1-10 parts of nanometer organic montmorillonite, 0.1-0.5 part of an antioxidant, and 0.1-0.5 part of an ultraviolet-resistant agent. A nanometer PU synthetic track pavement material prepared from the adhesive has more excellent weatherability, wear resistance and cohesiveness and is nontoxic, odorless and harmless to human bodies and the environment.
Owner:北京蓝星清洗有限公司

Transformer oil base oil and preparation method and applications thereof

The invention discloses base oil of transformer oil and a preparation method as well as application thereof. The preparation method of the base oil of the transformer oil comprises the following steps: 1) performing furfural refining on QHD32-6 common cut 2 distillate oil to obtain refined oil, and obtaining furfural removed refined oil after removing furfural; 2) performing denitrification on the furfural removed refined oil, removing nitride slag of the furfural removed refined oil, and obtaining denitrogenized refined oil; and 3) adding clay to the denitrogenized refined oil for clay refining to obtain the base oil of the transformer oil. The preparation method widens raw material source of the base oil of the domestic transformer oil, can provide brand-new base oil of high-grade No. 45 transformer oil for the market. In addition, the method has the advantages of simple technological process flow, mild operating conditions, and high yield of target objects; and the base oil of the transformer oil has wide market application space.
Owner:CHINA NAT OFFSHORE OIL CORP +1

Composite antibacterial agent used for prolonging vacuum-package low-temperature meat product shelf life, and preparation method thereof

The invention relates to a composite antibacterial agent used for prolonging vacuum-package low-temperature meat product shelf life, and a preparation method thereof. The invention relates to the technical field of food additive. The agent is composed of the following substances, by weight: 3-6 parts of a tea polyphenol dissolved solution A, 3-6 parts of a garlic extract liquid B, 0-3 parts of a nutmeg extract liquid C, and 0-3 parts of a cinnamon extract liquid D. The invention also discloses the method for preparing the composite antibacterial agent used for prolonging the vacuum-package low-temperature meat product shelf life. The agent provided by the invention is safe and reliable, and has the advantages of simple operation, convenient application, and substantial effect. The agent has wide market application space. When the composite natural antibacterial agent is used for processing a vacuum-package salted pork-in-jelly sample, the shelf life of the product can be prolonged by 10-15 days.
Owner:JIANGSU UNIV

Flexible heat-shrinkable composite film formed by tape casting and preparation method of flexible heat-shrinkable composite film

PendingCN111976252AGuaranteed flexibilitySolve the phenomenon of poor shrinkage, etc.Flexible coversWrappersComposite filmButadiene Dioxide
The invention relates to a flexible heat-shrinkable composite film formed by a tape casting. The flexible heat-shrinkable composite film formed through tape casting is of an A / B / A three-layer composite structure, and the A layer is a surface layer and is mainly made of a mixture of PETG resin and an anti-blocking agent; and the layer B is a core layer and is mainly prepared from styrene-butadienesegmented copolymer (SBS) resin and maleic anhydride (MAH). The invention also provides a preparation method of the flexible heat-shrinkable composite film formed by tape casting. The heat-shrinkablecomposite film prepared by the method has the characteristics of wide shrinkage range, good flexibility, excellent printing performance and the like, and the phenomena of local pattern deformation, poor circular arc shrinkage and the like in the label sleeving process caused by high rigidity of a PETG film are avoided; and besides, the phenomena of film surface wrinkling and film layer separationcaused by inconsistent shrinkage of surface layer and core layer materials of a common composite film are avoided. The heat-shrinkable composite film prepared by the method has a wide market application space.
Owner:河南银金达新材料股份有限公司

PET color separation mylar tape used for data line and preparation method thereof

The invention discloses a preparation method of a PET color separation mylar tape used for a data line. The preparation method comprises the following steps that a screen roller is arranged in front of an automatic spreader, the PET mylar tape is arranged on an automatic spreader unreeling device, then coloring paste is poured into the automatic spreader and coated on the PET mylar tape, and the PET color separation mylar tape is obtained through drying, reeling and cutting. The method is simple without the step of gluing after coloring of the coloring paste so that the efficiency is high, theoutput is high, and the prepared PET color separation mylar tape has the function of easily distinguishing single wire strands and has high adhesive force and is not liable to decolor or fade. The invention also discloses the PET color separation mylar tape used for the data line.
Owner:中山市华子电缆有限公司

Waterborne polyurethane coating and preparation method thereof

The invention discloses a waterborne polyurethane coating which comprises the following components in parts by weight: 50-80 parts of poly (propylene carbonate) polyols, 10-30 parts of polyisocyanates, 3-8 parts of hydrophilic chain extender, 1-4 parts of cross-linking agent and 170-270 parts of deionized water. The invention also discloses a preparation method of the waterborne polyurethane coating. In the invention, polyatomic alcohol is used as polycarbonate (PC), so the coating not only has the advantages of a polyester polyurethane coating such as stronger abrasive resistance, scratch resistance and high bonding strength, but also does not generate hydrolysis and has strong storage stability and weather fastness. In addition, the poly (propylene carbonate) polyols can be prepared by using carbon dioxide as a raw material, thereby having low cost. The coating prepared by the preparation method has wide market prospects.
Owner:HUIZHOU DAYAWAN DAZHI FINE CHEM

Engine exhaust pressure electronic waveform detection and identification method and system

The invention relates to an engine exhaust pressure electronic waveform detection and identification method and system, and belongs to the technical field of automobile detection and maintenance equipment manufacture. The system comprises an exhaust pressure sensor, a data processing unit and a display unit, the exhaust pressure sensor is connected with the data processing unit, the exhaust pressure sensor is used for transmitting electronic signals output by the exhaust pressure sensor to the data processing unit, and the data processing unit performs operation processing according to the engine exhaust pressure electronic waveform detection and recognition method; and the data processing unit is further connected with the display unit and used for displaying an operation result through the display unit in a terminal mode, the displayed information is used for analyzing operation characteristics, engine performance or fault causes of an engine, and sensor signals can be subjected to wireless transmission, cloud processing, APP diagnosis and the like. According to the engine exhaust pressure electronic waveform detection and identification method and system, quantitative detectionand waveform analysis are carried out on exhaust pressure waves, the performance of the engine is effectively, accurately and comprehensively detected and diagnosed, and the technical level of automobile maintenance operation is improved.
Owner:广东唯普汽车科技股份有限公司

Control method and equipment for treating myopia through low-frequency pulse waves

The invention discloses a control method for treating myopia through low-frequency pulse waves. The control method comprises the following steps: configuring target audio content; playing the target audio content in a preset audio frequency band, wherein the preset audio frequency band is 1-13Hz; generating a synchronous pulse frequency band according to the preset audio frequency band; and playing the target audio content while outputting bioelectric pulses in the pulse frequency band to stimulate skin and / or nerves of eyes. The equipment is designed according to the brain wave sensing range of teenagers, and the brain is relaxed more easily; and the low-frequency bioelectricity is adopted to stimulate from low to high and then to low, so that the eye muscles of the teenagers can be more comfortable and relaxed, and the teenagers have no pricking feeling. The temporary vision improvement degree is higher, the teenagers can more easily obtain brain relaxation and concentration improvement in the light rhythm and melody like watching cartoons, and the focusing ability of the teenagers is better helped. Meanwhile, the invention has the characteristics of high safety, low production cost and wide market application space, and is generally pleasant for teenagers to use.
Owner:冼耀荣

Weatherproof and antibacterial polycarbonate engineering plastic and preparation method thereof

The invention discloses a weatherproof and antibacterial polycarbonate engineering plastic and a preparation method thereof. The engineering plastic is prepared from the following raw materials in part by weight: polycarbonate, weatherproof resin ASA, an antibacterialagent, a flexibilizer, a compatilizer, a dispersing agent, an antioxygen and other aids. The preparation method comprises the following steps: a, respectively performing force air drying on the polycarbonate and the weatherproof resin ASA; b, weighing the antibacterialagent and the dispersing agent, and mixing the two uniformly; c, weighing the flexibilizer, the compatilizer, the antioxygen and other aids, and putting into a super mixer for dry mixing, together with raw materials in step a and step b; and d, putting the mixedmaterials in the step c into a twin-screw extruder, and performing melt extrusion for granulation. The weatherproof and antibacterial polycarbonate engineering plastic has the advantages of ageing resistance, yellowing resistance, good weatherability, and durable antibacterial function.
Owner:SHENZHEN KEJU NEW MATERIAL

Powdered material secondary recycling technical equipment suitable for feed processing

ActiveCN109602056ASolve the problem of how to use it reasonablyReduce the problem of low rate of returnFeeding-stuffPrillAdditive ingredient
The invention belongs to the technical field of feed processing and recycling, and relates to powdered material secondary recycling technical equipment suitable for feed processing. A powdered material and granular feed are separated through a vibrating filter screen, and the powdered material is conveyed and recycled to a feed raw material bin and re-processed into granular feed. The powdered material secondary recycling technical equipment suitable for feed processing not only improves the yield of granular feed products, but also reduces many problems caused by more powdered materials in the granular feed, such as automatic grading of feed ingredients, fastidiousness about food by animals, low return rate of granular feed, large storage bin capacity, high freight, poor fluidity, environmental pollution and the content of salmonella in feed exceeding the standard and so on, and has a wide market application space.
Owner:INNER MONGOLIA SAIFEIYA AGRI SCI & TECH DEV

A technical equipment suitable for secondary recycling of feed processing pulverized materials

ActiveCN109602056BSolve the problem of how to use it reasonablyReduce the problem of low rate of returnFeeding-stuffEnvironmental engineeringFodder
The invention belongs to the technical field of feed processing and recovery, and relates to a technical equipment suitable for secondary recycling of feed processing pulverized material, which separates the pulverized material from granular feed through a vibrating filter screen, and transports and recycles the pulverized material to the feed Raw material bin, reprocessed into pellet feed. The technical equipment suitable for the secondary recycling of powdered materials in feed processing according to the present invention not only improves the yield of pellet feed products, but also reduces many problems caused by the large amount of powdered materials in pellet feed, such as: Automatic grading of ingredients, picky eaters, low return rate of pellet feed, large storage bin capacity, high freight, poor fluidity, environmental pollution, excessive Salmonella in feed, etc., have a wide range of market applications.
Owner:INNER MONGOLIA SAIFEIYA AGRI SCI & TECH DEV

Low-reflectivity low-emissivity coated glass and preparation method thereof

The invention discloses low-reflectivity low-emissivity coated glass and a preparation method thereof, the low-reflectivity low-emissivity coated glass comprises a glass base layer, a functional layer, a protective film layer, an absorption layer, a second dielectric layer and a third dielectric layer, the functional layer is located at one side of the glass base layer; the protective film layer is positioned at one side, far away from the glass base layer, of the functional layer; the absorption layer is positioned between the glass base layer and the functional layer, is used for absorbing sunlight and comprises at least three protective layers; and the second dielectric layer and the third dielectric layer are respectively positioned between the two protective layers. According to the technical scheme, the reflectivity of the low-emissivity coated glass is reduced.
Owner:浙江旗滨节能玻璃有限公司 +1

Transformer oil base oil and preparation method and applications thereof

The invention discloses base oil of transformer oil and a preparation method as well as application thereof. The preparation method for the base oil of the transformer oil comprises the following steps: 1) performing furfural refining on QHD32-6 common cut 2 distillate oil to obtain refined oil, and obtaining furfural removed refined oil after removing furfural; and 2) adding clay to the furfuralremoved refined oil for clay refining to obtain the base oil of the transformer oil. The preparation method widens raw material source of the base oil of the domestic transformer oil, and can providebrand-new base oil of high-grade No. 45 transformer oil for the market. In addition, the method has the advantages of simple technological process flow, mild operating conditions, and high yield of target objects; and the base oil of the transformer oil has wide market application space.
Owner:CHINA NAT OFFSHORE OIL CORP +2

Connector used for conductor connection, connection device and cold link technology for conductor connection

The invention relates to the field of the conductor connection, in particular to a connector used for conductor connection, a connection device and a cold link technology for conductor connection. The connector used for the conductor connection, the connection device and the cold link technology for conductor connection are widely applied to the processes, such as electric power, electric power construction and installation, and electric wire and cable manufacture, are used for the isometric connection or reducing connection for cable conductors and bare copper and aluminum stranded wires, and are also used for solving the problems of untight contact between the conductor and a connecting pipe, low tensile strength, big contact resistance, unsmooth surface, uneven electric field distribution and the like. The connection device is provided with a taper-shaped connector, a cold link die, a conductor I and a conductor II, wherein the center of the cold link die is in a pore structure cooperated with the taper-shaped connector; the taper-shaped connector is arranged in the pore structure; and the conductor I and the conductor II respectively extend into the connection pore of the taper-shaped connector for butt joint from two ends of the pore structure of the cold link die. After the cold link technology disclosed by the invention is adopted, the technology is advanced, the performance is excellent, and the product quality is stable. After the conductors are connected by the cold link technology, the connector and the conductors tightly contact to almost form a whole without any gap.
Owner:SHENYANG XINHE CABLE

Gas injection device and method for preventing and controlling urban haze

The invention discloses a gas injection device for preventing and controlling urban haze. An environment-friendly active agent and water are mixed to prepare an aqueous surfactant solution, and mixedgas lighter than air is introduced into the aqueous surfactant solution by a tube aerator, so that a large quantity of bubbles are produced; after the mixed gas, the surfactant solution and water areaerated, the bubbles are suspended at the top inside a gas-liquid mixing box, then the bubbles are conveyed to the outside through an exhaust motor, an exhaust wheel and a gas outlet pipeline, float in air and rise to the sky gradually, surface energy of the bubbles is large when the bubbles are mixed into the outside (atmosphere), tiny particles with size of PM10 or smaller in air can be adsorbed, when the bubbles adsorb sufficient tiny particles, the surface energy is reduced and weight is increased, the bubbles can be broken, and the tiny particles become heavier particles and freely fall to the ground like raindrops. The injection device is one good device for preventing and controlling PM2.5 at present and has broad market application space.
Owner:王泽宇

Manufacturing method of portable solar energy light condensation device

The invention discloses a manufacturing method of a portable solar energy light condensation device. According to the method, a large-span tension membrane, a solar battery piece, a hot melt adhesive, a hardness support plate, a hot melt adhesive and a high-temperature waterproof anticorrosion cloth which are sequentially laid from top to bottom are combined into a whole through a laminating machine at the high temperature environment of 100 DEG C to form a solar panel, then the solar panel is cooled for 30 minutes to solidify the hot melt adhesive, finally, a metal convex net with dot matrix bulges is laid on the surface of the large-span tension membrane, the laminating machine is used to laminate the metal convex net at the vacuum negative pressure for 30 minutes at the high temperature environment of 150 DEG C, a dot matrix concave-convex structure is formed on the surface of the large-span tension membrane, so that the portable solar energy light condensation device with the function of a condensing lens is formed. The manufacturing method of the portable solar energy light condensation device improves the effective light efficiency by 10% or above, and the conversion efficiency of solar energy is improved.
Owner:GUANGZHOU ALLPOWERS IND INT

Sports field poly(ethylene carbonate) polyurethane paving material and preparation method thereof

The invention discloses a sports field poly(ethylene carbonate) polyurethane paving material, which consists of a component A, a component B, black rubber particles and a catalyst. The component A comprises the following components in percentage by weight: 20 to 50 percent of diisocyanate, and 50 to 80 percent of poly(ethylene ether carbonate)diol. The component B comprises the following components in percentage by weight: 30 to 50 percent of poly(ethylene ether carbonate), 5 to 25 percent of processing aid, 30 to 70 percent of filler, 0.1 to 2 percent of pigment, 0.01 to 0.1 percent of ultraviolet absorber and 0.01 to 0.1 percent of inhibitor. The weight ratio of the component A to the component B is 1:(1-6), the content of black rubber particles is 10 to 40 percent based on the total weight of the components A and B, and the content of the catalyst is 0.05 to 1 percent based on the total weight of the components A and B. The invention discloses the preparation method of the paving material. The indexes of the paving material reach the performance indexes of polyether polyurethane paving materials. Compared with the polyether polyurethane paving materials, the paving material hashigher weather resistance, scrape resistance, wear resistance and caking property, and is lower in cost, nontoxic and environmentally-friendly.
Owner:HUIZHOU DAYAWAN DAZHI FINE CHEM

Method and system for detecting and identifying electronic waveform of engine exhaust pressure

An engine exhaust pressure electronic waveform detection and identification method and system belong to the technical field of automobile detection and maintenance equipment manufacturing. The system includes an exhaust pressure sensor, a data processing unit and a display unit, and the exhaust pressure sensor is connected to the data The processing unit is used to transmit the electronic signal output by the exhaust pressure sensor to the data processing unit, and the data processing unit performs arithmetic processing according to the electronic waveform detection and identification method of the engine exhaust pressure; the data processing unit is also connected to the display unit, which is used for computing The results are displayed on the terminal through the display unit, and the displayed information is used to analyze the operating characteristics of the engine, the engine performance or the cause of the failure. The sensor signal can also be wirelessly transmitted, processed in the cloud, APP diagnosis, etc. The present invention quantifies the exhaust pressure wave Detection and waveform analysis can effectively carry out accurate and comprehensive detection and diagnosis of engine performance, and improve the technical level of vehicle maintenance and maintenance operations.
Owner:广东唯普汽车科技股份有限公司

Poly(ethylene carbonate) type polyurethane water-based adhesive

The invention discloses a poly(ethylene carbonate) type polyurethane water-based adhesive which is prepared through the following method: taking 100 parts of poly(ethylene carbonate) diol according to parts by weight, adding 2-10 parts of dimethylol propionic acid, stirring and slowly raising temperature to 100-120 DEG C under nitrogen protection, reducing the temperature to 50-70 DEG C after dissolution, dropping 20-60 parts of diisocyanate, raising the temperature to 70-80 DEG C, reacting for 2-3 hours, stopping heating when glue solution has viscosity and is transparent, naturally cooling to 40-50 DEG C, stopping introducing nitrogen, adding 100-700 parts of 5-30% of catalyst water solution while stirring intensely, neutralizing, emulsifying and preparing the adhesive. As a large number of carbonate bonds are contained in molecules of poly(ethylene carbonate) polyol, the bonding strength of a product is high; simultaneously, the carbonate bonds are less prone to hydrolysis, the storage stability of the product is high. In addition, the poly(ethylene carbonate) polyol is prepared by copolymerizing carbon dioxide and epoxy ethane, the cost is low, and the poly(ethylene carbonate)type polyurethane water-based adhesive has broad market application space.
Owner:HUIZHOU DAYAWAN DAZHI FINE CHEM

Time Warp online game synchronization method based on message type improvement

The invention provides a Time Warp online game synchronization method based on message type improvement. Detailed analysis is carried out on reasons for the online game synchronization problem, detailed analysis is carried out on a Time Warp positive synchronization algorithm, the algorithm can ensure the responsiveness of the online game, but high memory occupancy rate caused by state snapshots and frequent state rollback cause low performance of the algorithm. Aiming at the defects of frequent state rollback, large resource occupation and the like of a Time Warp algorithm, the Time Warp algorithm is improved on the basis of two aspects of message types and network environment conditions, messages in an online game are divided into important messages and non-important messages according to importance degrees, and different processing strategies are provided for a Time Warp synchronization algorithm according to the two message types. Through experiments, it is further verified that the performance of the improved Time Warp synchronization algorithm is effectively improved, and the real-time performance and consistency of online games are balanced.
Owner:扆亮海

Combustion measurement device used for blowing assisted sintering method and combustion measurement method used for blowing assisted sintering method

ActiveCN108088398APrecise thickness controlSolve the problem of real-time gas burning positionMeasurement devicesProduction lineMeasurement device
The invention provides a combustion measurement device. A gas concentration detection device is additionally arranged between a sintering machine trolley and an auxiliary combustion device. The gas concentration detection device comprises a driving device, a traction part and a concentration detector. The invention also provides a combustion measurement method using the device. According to the device and the method, the thickness of the combustion zone can be accurately controlled and the quality improvement effect can be optimized so that the corresponding defects existing in the prior art can be effectively solved, the production safety factor and the quality improvement effect can be enhanced and the objectives of stable, smooth and high-yield production of the whole production line can be achieved.
Owner:ZHONGYE-CHANGTIAN INT ENG CO LTD

Transformer oil base oil and preparation method and applications thereof

The invention discloses base oil of transformer oil and a preparation method as well as application thereof. The preparation method of the base oil of the transformer oil comprises the following steps: 1) performing hydropretreatment on SZ36-1 common cut 3 distillate oil for acid removal; 2) performing furfural refining on the SZ36-1 common cut 3 distillate oil to obtain refined oil, and obtaining furfural removed refined oil after removing furfural; 3) performing denitrification on the furfural removed refined oil, removing nitride slag of the furfural removed refined oil, and obtaining denitrogenized refined oil; and 4) adding clay to the denitrogenized refined oil for clay refining to obtain the base oil of the transformer oil. The preparation method widens raw material source of the base oil of national transformer oil, can provide brand-new base oil of No. 25 transformer oil for the market. In addition, the method has the advantages of simple technological process flow, mild operating conditions, and high yield of target objects; and the base oil of the transform oil has wide market application space.
Owner:CHINA NAT OFFSHORE OIL CORP +2

Annular equivolume well cementation method

InactiveCN104329049AAvoid economic lossAvoid engineering costsSealing/packingWell cementingCasing string
The invention provides an annular equivolume well cementation method, wherein the method includes the following steps: a float collar of a casing string is put into a well, marking liquid is then injected into the casing string, and when the casing string is completely put into the well, the casing string is filled up with the marking liquid; grout is injected into the casing string, and when the marking liquid is discovered to return to the mouth of the well, the injection of the grout is stopped immediately; the grout in the casing string is replaced, replacement is finished when pressure is bumped, cement is cured until a cement ring is formed, and the operation of annular equivolume well cementation is complete. The annular equivolume well cementation method in the invention can increase the quality of well cementation, moreover, construction is simple and convenient, the reliability is high, the construction cost is low, the practicability is high, and the annular equivolume well cementation method has a broad market application space.
Owner:PETROCHINA CO LTD
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