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59 results about "Triethylene glycol" patented technology

Triethylene glycol, TEG, or triglycol is a colorless odorless viscous liquid with molecular formula HOCH₂CH₂OCH₂CH₂OCH₂CH₂OH. It is used as a plasticizer for vinyl polymers. It is also used in air sanitizer products, such as "Oust" or "Clean and Pure". When aerosolized it acts as a disinfectant. Glycols are also used as liquid desiccants for natural gas and in air conditioning systems. It is an additive for hydraulic fluids and brake fluids and is used as a base for "smoke machine" fluid in the entertainment industry.

PVB film and preparation method thereof

PendingCN120737524APolymer scienceAntioxidant
The invention belongs to the technical field of high polymer materials, and particularly relates to a PVB (Polyvinyl Butyral) film and a preparation method thereof. The PVB film provided by the invention is prepared from the following components in parts by mass: 100 parts of PVB resin, 33 to 36 parts of triethylene glycol di-2-ethylhexoate, 7 to 9 parts of integrated anti-radiation toughening filler, 1 to 2 parts of organic montmorillonite, 0.8 to 1.2 parts of composite coupling agent, 0.5 to 1 part of ultraviolet light absorber, 0.6 to 0.8 part of antioxidant and 0.8 to 1 part of heat stabilizer. The integrated anti-radiation toughening filler adopts a core-shell structure, the anti-radiation core is composed of bismuth oxide and tungsten oxide according to the mass ratio of 3: 1, and the elastic coating layer is maleic anhydride grafted modified POE. The preparation method comprises the steps of pre-dispersion treatment, component mixing, melt extrusion, film casting, graded cooling, two-way stretching and the like. Through the core-shell structure design of the integrated anti-radiation toughening filler and the optimized processing technology, the anti-radiation performance and the toughening performance are synergistically improved, and the prepared film has the advantages of excellent anti-radiation effect, high toughness and good transparency.
Owner:SHANDONG QILU ETHYLENE CHEM

Low-energy-consumption skid-mounted triethylene glycol dehydration tail gas zero-emission treatment device

The invention discloses a low-energy-consumption skid-mounted triethylene glycol dehydration tail gas zero-emission treatment device which comprises a tail gas cooling unit, a gas-liquid separation unit and a tail gas recycling unit which are connected in sequence, the gas-liquid separation unit comprises a gas-liquid separation tank, the gas-liquid separation tank is provided with a gas output pipe, and the gas output pipe is connected with the tail gas cooling unit. The tail gas recycling unit is provided with a tail gas input pipeline, the gas output pipe is communicated with the tail gas input pipeline, the tail gas input pipeline is further communicated with the power natural gas output pipeline, and an ejector is installed at the joint of the power natural gas output pipeline and the tail gas input pipeline. Tail gas and natural gas are conveyed to the rear end of the natural gas of the main pipeline. The system has the beneficial effects that regenerated tail gas after gas-liquid separation is mixed with power natural gas with pressure under the action of the ejector, and the tail gas is conveyed to the rear end of the natural gas of the main pipeline, so that the tail gas is recycled, the economic benefit is improved, zero emission of the tail gas is realized, and the environment is prevented from being polluted.
Owner:PETROCHINA CO LTD

TEG automatic cleaning furnace for cleaning spinneret plate

The utility model discloses a TEG automatic cleaning furnace for cleaning a spinneret plate. The TEG automatic cleaning furnace comprises a control cabinet, a transfer device, a TEG cleaning device and a bearing support mechanism. The transfer device comprises a lifting driving mechanism, a swing driving mechanism and a support locking mechanism. According to the TEG automatic cleaning furnace for cleaning the spinneret plate, by means of cooperation of the lifting driving mechanism, the swing driving mechanism and the support locking mechanism, locking and hoisting of the bearing support mechanism can be achieved, and therefore the spinneret plate borne on the bearing support mechanism is automatically fed into the TEG cleaning device to be subjected to triethylene glycol cleaning treatment; and after treatment is completed, the bearing support mechanism and all the spinneret plates are lifted and taken out together, manual participation is greatly reduced, and the batch cleaning efficiency of the spinneret plates is effectively improved.
Owner:JIANGSU CHAOQUN MACHINERY TECH DEV CO LTD

Connecting unit for chemical modification of nucleic acid end group, preparation method of connecting unit and nucleic acid probe

The embodiment of the invention provides a connecting unit for chemical modification of a nucleic acid end group, a preparation method of the connecting unit and a nucleic acid probe. The connecting unit for chemical modification of the nucleic acid end group has a triethylene glycol structure, and the connecting unit has the following structure. Therefore, the connecting unit with the triethylene glycol structure is relatively simple in synthesis process, relatively high in yield, efficient in synthesis, good in nucleic acid end group chemical modification effect, applicable to connection of various types of probe molecules and nucleic acid molecules, capable of simply and efficiently preparing nucleic acid probes and wide in application range.
Owner:QINGDAO JUDIANER TECH CO LTD

Preparation method of uniform-morphology ammonium perchlorate microrod

The invention discloses a preparation method of an ammonium perchlorate microrod with a uniform morphology. The preparation method comprises the following steps: firstly, heating a triethylene glycol saturated solution of ammonium perchlorate under a room temperature condition to a preset high temperature; then adding the high-temperature ammonium perchlorate saturated solution into an acetic acid anti-solvent at a certain temperature at a certain feeding rate for recrystallization; and finally, standing, separating, washing and drying the product to obtain the ammonium perchlorate microrod. The obtained ammonium perchlorate microrod is regular in morphology, good in dispersity and uniform in size, the length is 40-60 microns, and the width is about 10 microns. The method has the advantages of being high in operability, good in repeatability, easy to industrialize and the like.
Owner:HUAIYIN TEACHERS COLLEGE

Waste triethylene glycol purifying and recycling device

A waste triethylene glycol purification and recycling device relates to the technical field of triethylene glycol purification devices and comprises a triethylene glycol vacuum evaporation tank, a primary condenser, a secondary condenser, a condensation storage tank, a gas-liquid separation tank and a vacuum pump, a steam outlet pipeline A is arranged at the upper end of the triethylene glycol vacuum evaporation tank and communicated with an inlet of the primary condenser, and a steam outlet pipeline B is arranged at the lower end of the steam outlet pipeline A; triethylene glycol steam is condensed into liquid through the first-stage condenser, an outlet of the first-stage condenser is communicated with the condensation storage tank, a steam outlet pipeline B is arranged on the upper portion of the condensation storage tank and communicated with an inlet of the second-stage condenser, and gaseous triethylene glycol steam is condensed into liquid through the second-stage condenser. An outlet of the secondary condenser is communicated with a gas-liquid separation tank; the upper part of the gas-liquid separation tank is communicated with a vacuum pump; the vacuum degree of the triethylene glycol vacuum evaporation tank is 4KPa, and under the vacuum degree, the boiling point of triethylene glycol is lower than 200 DEG C and lower than the theoretical decomposition temperature of 208 DEG C, so that purer triethylene glycol can be obtained and reaches the recycling standard.
Owner:刘钢柱

A copper-cobalt oxide catalyst, its preparation method and application

This invention discloses a copper-cobalt oxide catalyst, its preparation method, and its application, belonging to the field of wastewater purification technology. The invention uses CuSO4·5H2O, CoSO4·7H2O, and urea as raw materials, volcanic rock fragments as a matrix, and water and triethylene glycol as solvents to prepare a copper-cobalt oxide catalyst. This copper-cobalt bimetallic catalyst can be applied to the catalytic treatment of antibiotic wastewater, exhibiting good activation effects on persulfate. When used to treat antibiotic wastewater containing tetracycline, it can essentially achieve complete removal of tetracycline.
Owner:LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY

Preparation method of corrosion inhibitor for magnesium alloy cutting fluid

The invention discloses a preparation method of a corrosion inhibitor for magnesium alloy cutting fluid, which specifically comprises the following steps: heating dodecenyl succinic anhydride to 80-100 DEG C, adding triethylene glycol monobutyl ether with equal molar ratio into the dodecenyl succinic anhydride, and carrying out esterification reaction for 4-5 hours to obtain the corrosion inhibitor. The corrosion inhibitor prepared by the method disclosed by the invention is added into the magnesium alloy cutting fluid, so that the magnesium alloy cutting fluid has good lubricating performance and also has good hard water resistance and good corrosion inhibition performance, on one hand, a compact adsorption film layer can be formed on the surface of a magnesium alloy; on the other hand, the magnesium alloy cutting fluid can rapidly capture the precipitated magnesium ions and uniformly disperse the magnesium ions in the cutting fluid, so that the conditions of demulsification and failure of the cutting fluid caused by rapid increase of water hardness can be effectively prevented, and the service life of the magnesium alloy cutting fluid is greatly prolonged.
Owner:NANJING KERUN LUBRICANTS +1

Composite resin for esthetic restoration with improved antibacterial property and polymerization depth, antimicrobial and antiviral 3D printing denture base resin composition, and manufacturing method therefor

The present invention relates to a composite resin for esthetic restorations with improved antimicrobial properties and polymerization depth, and a manufacturing method therefor, wherein the compositive resin comprises urethane dimethacrylate (UDMA), bisphenol A-glycidyl methacrylate (BIS-GMA), bisphenol A dimethacrylate ethoxylated (BIS-EMA), triethylene glycol dimethacrylate (TEGDMA), a photoinitiator, a co-photoinitiator, a filler, barium glass, an accelerator, an antioxidant, a discoloration inhibitor, and an antimicrobial agent in addition to lysozyme. With the enhanced polymerization depth, the resin can be applied as a bulk-fill resin, and the excellent antimicrobial properties thereof provide resistance against bacteria and viruses. After polymerization, the resin exhibits a flexural strength exceeding 80 MPa, which is a level required by the Korean Ministry of Food and Drug Safety.
Owner:JEONG IN SUN

Crystalline forms of dexamethasone dimers and uses thereof

The disclosure features polymorphs of a prodrug dimer of dexamethasone linked at the 21-C and 21′-C carbons via a carbonate-triethylene glycol-carbonate linker. Also disclosed are pharmaceutical compositions and articles comprising said polymorphs, and the use thereof in the treatment of a disease or condition, e.g. via the extended or controlled release of dexamethasone from said articles.
Owner:RIPPLE THERAPEUTICS CORP

Recycled asphalt mixture with good durability and preparation method thereof

ActiveCN121651765AEthylic acidEthyl group
The invention relates to the technical field of recycled asphalt mixtures, and particularly discloses a recycled asphalt mixture with good durability and a preparation method thereof. The invention discloses a recycled asphalt mixture with good durability. The recycled asphalt mixture is prepared from 60-80 parts of a waste asphalt mixture reclaimed material, 4-7 parts of new asphalt, 15-18 parts of a new aggregate, 2-5 parts of fibers, 3-7 parts of a regenerant and 2-5 parts of filler, wherein the regenerant is prepared from aromatic hydrocarbon oil, triethylene glycol di-2-ethylhexoate, 2-ethylhexyl diphenyl phosphate, dioctyl terephthalate, epoxidized soybean oil, dipropylene glycol methyl ether acetate, polymethylene polyphenyl polyisocyanate, oleic acid hydroxyethyl imidazoline, 0 erucyl amide and barium petroleum sulfonate. The recycled asphalt mixture provided by the invention can effectively resist generation of diseases such as ruts and cracks, the service life of a road is remarkably prolonged, and the maintenance cost of the road is reduced.
Owner:RAOPING XINCAI BUILDING MATERIALS CO LTD

Jet device and triethylene glycol dehydration regeneration tail gas treatment system

The utility model relates to an injection device and triethylene glycol dehydration regeneration tail gas treatment system, belongs to the technical field of natural gas equipment, and comprises at least two stages of injectors, each injector comprises an injection inlet used for inputting injection gas, a suction inlet used for sucking tail gas and a mixing outlet, the injection inlet corresponds to the mixing outlet, and the suction inlet corresponds to the mixing outlet. A throttling runner is at least constructed between the injection inlet and the mixing outlet; the mixing outlet of the upper-stage ejector is communicated with the suction inlet of the lower-stage ejector, and the ejectors at all stages are sequentially connected in series into a whole; according to the injection device, tail gas can be injected and pressurized in a tail gas recovery system, so that a compressor is not needed, a firing furnace structure can be omitted, and the operation and maintenance cost can be greatly saved; and the pressure of the injected and pressurized mixed gas can reach a preset value more accurately and efficiently, so that the mixed gas can be smoothly input into a natural gas pipeline network, the requirements of different processes can be met, and the universality is higher.
Owner:SICHUAN JUJIE INNOVATIVE MATERIAL TECH CO LTD

A station VOCs gas zero-emission centralized recovery device and process method

This invention discloses a centralized VOCs gas recovery device and process for zero emissions at a station, belonging to the field of ecological governance technology. The specific steps of the process are as follows: I. Before gas recovery, the water cooling system and hydraulic system are debugged and safety parameters are set, while the status of each valve is checked; II. The triethylene glycol tail gas and VOCs gas in the venting main are collected and pretreated, and the pretreated triethylene glycol tail gas and VOCs gas are pressurized in one stage. This invention ensures a non-combustion state, reduces the workload of on-site installation and maintenance, simplifies the overall recovery process, eliminates the need for the high power consumption and complex frequency conversion control of conventional reciprocating machines and screw compressors, reduces energy loss, reduces operating costs, and comprehensively avoids risks such as equipment overpressure, gas backflow, and flare backfire, ensuring system safety and stable recovery efficiency. Therefore, we propose a centralized VOCs gas recovery device and process for zero emissions at a station.
Owner:HENGQING TURBINE (BEIJING) MASCH TECH CO LTD

Absorbents for capturing carbon dioxide and methods of capturing carbon dioxide

PendingCN122298183Apromote absorptionReduce system viscosityMonomethyl etherGlycol synthesis
This invention provides an absorbent for capturing carbon dioxide and a method for capturing carbon dioxide. By volume percentage, the absorbent comprises 20-60% glycine salt aqueous solution, 10-50% triethylene glycol monomethyl ether, 5-10% ethylene glycol, and the balance being water. This absorbent combines the advantages of glycine salt systems, such as low volatility, non-toxicity, safety, and better antioxidant degradation resistance, while avoiding the risk of solid precipitates forming after absorption by the glycine salt system, which could cause pipeline blockage.
Owner:PETROCHINA CO LTD

Efficient liquid distributor suitable for triethylene glycol absorption tower

The efficient liquid distributor comprises a mounting cylinder, a discharging plate is arranged at the bottom of the mounting cylinder, a plurality of groups of liquid outlet holes are formed in the discharging plate, a drainage mechanism matched with the liquid outlet holes for use is arranged below the liquid outlet holes, a circular adjusting plate is rotationally arranged at the top of the discharging plate, and a plurality of liquid outlet holes are formed in the circular adjusting plate. A plurality of sets of adjusting holes used in cooperation with the liquid outlet holes are formed in the circular adjusting plate, a driving rod is installed in the center of the top of the circular adjusting plate, a first bevel gear is arranged on the outer side of the driving rod and engaged with a second bevel gear, and the second bevel gear is installed on the outer side of the rotating rod; and one end of the rotating rod is connected with a speed reduction driving mechanism. According to the efficient liquid distributor suitable for the triethylene glycol absorption tower, in order to solve the problem that an existing efficient liquid distributor cannot control the flow of discharged liquid, the discharging plate is arranged at the bottom of the mounting cylinder, and a plurality of groups of liquid outlet holes are formed in the discharging plate.
Owner:JIANGSU YONGCHENG EQUIP TECH CO LTD

Visual liquid collecting device

The utility model belongs to the technical field of natural gas dehydration, and discloses a visual liquid collecting device which comprises a cylinder body, a high-position connector and a low-position connector are arranged on the cylinder body at intervals in the vertical direction, the high-position connector and the low-position connector are communicated with a high-position liquid level meter connector and a low-position liquid level meter connector of an absorption tower respectively, and a low-position liquid outlet is formed in the bottom of the cylinder body. A plurality of side liquid outlets are uniformly formed in the side part of the cylinder body at intervals in the vertical direction, a groove body structure is formed in one side of the cylinder body in the vertical direction, the groove body structure is communicated with an inner cavity of the cylinder body, the top of the groove body structure is higher than the high-position connector, the bottom of the groove body structure is lower than the low-position connector, and a visible plate is installed in the groove body structure in a sealed mode; the visual liquid collecting device provided by the utility model is convenient to install, can be used for observing the liquid level state, can realize separation of triethylene glycol, hydrocarbon substances and other impurities, and ensures normal operation of a natural gas dehydration device.
Owner:BEST ENERGY EQUIP TIANJIN

A small critical dimension bias copper etching solution composition

ActiveCN122128718AEtchingThiadiazoles
The present application relates to etching liquid technical field, specifically to a kind of small key size deviation copper etching liquid composition, by mass percentage, including the following components: hydrogen peroxide, ammonium hydrogen fluoride, 2-mercapto-1,3,4-thiadiazole, imidazole, citric acid, malic acid, ammonium sulfate, triethylene glycol, the rest is deionized water.The mass ratio of 2-mercapto-1,3,4-thiadiazole and imidazole is controlled between 1-2 in the present application, and a complementary adsorption layer is formed, wherein imidazole provides basic corrosion inhibition by covering quickly, 2-mercapto-1,3,4-thiadiazole enhances inhibition by strong bonding, and dynamic protection is achieved by the synergistic effect of the two, which can control the rate, improve uniformity and obtain a bright surface;At the same time, strong inhibition side etching, accurate control of etching morphology, especially anisotropy, to obtain steep sidewall and smooth surface;It can meet the etching demand of small CD bias.
Owner:RUNJING (HEFEI) OPTOELECTRONIC MATERIALS CO LTD

Flux composition, solder composition, electronic substrate, and method for manufacturing electronic substrate

A flux composition containing (A) a resin, (B) an activator, and (C) a solvent, the component (A) being at least one selected from the group consisting of polyalkylene glycol fatty acid esters and polyglycerol fatty acid esters and having an HLB value of more than 10 and a freezing point of 35 DEG C or less, and the component (C) containing (C1) triethylene glycol monobutyl ether.
Owner:TAMURA KK

Brake fluid for one-box brake-by-wire system and preparation method thereof

The application discloses brake fluid for One-Box brake-by-wire system and a preparation method thereof, the brake fluid comprises triethylene glycol monomethyl ether borate, glycerol acid ester, triethylene glycol monobutyl ether, tetraethylene glycol monomethyl ether, diethylene glycol, anti-rust agent, antioxidant and pH value regulator. The brake fluid can reduce the friction coefficient to <=0.14 under the SRV test condition, the friction coefficient is reduced by 10% compared with that of traditional brake fluid, the abnormal sound and wear problem caused by poor lubrication of the brake system is effectively solved, and the reliability and safety of the brake system of the new energy vehicle are remarkably improved; in addition, the brake fluid also has low temperature kinetic viscosity (-40 DEG C) <=1000mm 2 / s, the pH value is controlled to be 7.5-8.0, and excellent corrosion prevention performance of the product is ensured.
Owner:JIANGSU LONGPAN NEW MATERIAL TECH CO LTD +1

Flame-retardant electrolyte, liquid injection process and application of flame-retardant electrolyte

The invention discloses a flame-retardant electrolyte, an electrolyte injection process and a lithium ion battery, the flame-retardant electrolyte comprises: a basic electrolyte, the basic electrolyte comprises a lithium salt and an organic solvent; a cross-linking agent, wherein the cross-linking agent is triethylene glycol dimethacrylate; the flame retardant is 1, 3, 3, 5, 5-pentafluoro-1-ethyoxyl-cyclotriphosphazene, and the flame retardant is 1, 3, 3, 5, 5-pentafluoro-1-ethyoxyl-cyclotriphosphazene; the initiator is azodiisobutyronitrile, and the mass ratio of the initiator to the cross-linking agent is 1: (40-50). According to the flame-retardant electrolyte, through the synergistic effect of the flame retardant and the cross-linking agent, combustion free radicals can be captured to interrupt flame propagation, a three-dimensional gel network can be formed to block heat transfer, meanwhile, the lithium ion conduction efficiency and cycling stability are ensured by optimizing the ratio of the initiator to the cross-linking agent, and the balance of battery safety and electrochemical performance is achieved; and the compatibility with the existing lithium ion battery production process is good, and special equipment does not need to be additionally introduced.
Owner:SHENGHONG KINETIC ENERGY TECH (TAIZHOU) CO LTD

Coalescence type filter and triethylene glycol dehydration device

The invention belongs to the technical field of natural gas dehydration, and discloses a coalescence type filter and a triethylene glycol dehydration device.The coalescence type filter comprises a shell, a gas blocking plate, a filter element and a guide plate, a gas containing cavity is formed in the shell, and the shell is provided with a gas inlet and a gas outlet; the air blocking plate is arranged in the air containing cavity and divides the air containing cavity into a first cavity body and a second cavity body located above the first cavity body, the air blocking plate is provided with a communicating opening communicating the first cavity body with the second cavity body, the air inlet is communicated with the first cavity body, the air outlet is communicated with the second cavity body, and the filter element is located in the second cavity body and used for blocking water; the hole diameter of the center hole is gradually increased from bottom to top, the flow guide plate is arranged in the center hole, and the flow guide plate is used for guiding gas entering the center hole, so that part of the gas flows in the radial direction of the center hole, the rest of the gas flows in the axial direction of the center hole, and then the dehydration effect of the coalescence type filter on natural gas is improved.
Owner:HIMILE MECHANICAL MFG +1

A tobacco extract, its preparation and use

PendingCN122271601AImprove responseExcellent smoke volumeBiotechnologyGlycerol
This invention discloses a tobacco extract, its preparation method, and its application, belonging to the field of tobacco flavoring technology. The preparation method includes: mixing water, propylene glycol, triethylene glycol, and glycerol into a quaternary composite solution, adding tobacco raw materials, glycine, glutamic acid, and alanine, and mixing thoroughly; obtaining a centrifuged clear liquid after extraction, which is then sequentially separated through a ceramic membrane, an ultrafiltration membrane, and a nanofiltration membrane; adding an organic acid to the membrane separation product, which is the tobacco extract. It can be used as a flavor enhancer in traditional cigarettes, significantly improving the richness, aroma, and satisfaction of the smoke; it can also be used directly as a base liquid for atomizing new tobacco products, without the need for adding large amounts of additional atomizing agents, producing sufficient and sustained smoke, with prominent tobacco aroma characteristics, a clean and comfortable aftertaste, and no irritation or sweetness.
Owner:ETABONG QINGDAO INDAL

Penetration flaw detection agent for stable development in high-temperature environment and preparation method of penetrant flaw detection agent

The invention relates to the field of nondestructive testing, and discloses a penetrant flaw detection agent for stable development in a high-temperature environment and a preparation method of the penetrant flaw detection agent. A cosolvent; a nano titanium dioxide imaging agent; a fluorinated surfactant; high temperature resistant polyamide; the aromatic ether solvent is diphenyl ether or diphenyl ether, and the boiling point range of the aromatic ether solvent is 250-270 DEG C; the cosolvent is triethylene glycol monoether, and the boiling point range of the cosolvent is 250-280 DEG C. A high-temperature stable liquid matrix mainly comprising an aromatic ether solvent is adopted, through the synergistic effect of a combined cosolvent, it is ensured that the penetrant flaw detection agent still has low volatility and high chemical stability in a high-temperature environment, and compared with a low-boiling-point solvent scheme generally adopted in the prior art, the penetrant flaw detection agent has the advantages of low volatility and high chemical stability. According to the invention, the problem of work failure of the penetrant flaw detection agent caused by solvent volatilization is avoided, and the applicability and reliability in high-temperature crack detection are improved.
Owner:WUJIANG HYPERD NDT MATERIAL

Heat exchange medium and method for manufacturing the same

To reduce CO2 emissions associated with the manufacture of heat exchange media. [Solution] The heat exchange medium is an intermediate product in the process of producing ethylene oxide using a catalytic reaction of ethylene and oxygen, and contains a high-boiling fraction in which ethylene oxide is absorbed into water. Here, the content of the high-boiling fraction is 20% by mass or more and 100% by mass or less, and the content of ethylene glycol due to the high-boiling fraction is 5% by mass or more and 65% by mass or less. The heat exchange medium may contain formic acid and / or formate. The pH of the heat exchange medium may be 6.0 to 10. The heat exchange medium may contain phosphoric acid and / or phosphate. The heat exchange medium may contain diethylene glycol and / or triethylene glycol.
Owner:TANIGAWA YUKA INDS

Soluble microneedle

The application relates to the technical field of microneedles, in particular to a soluble microneedle. The soluble microneedle comprises a substrate and a drug-loaded needle body, the drug-loaded needle body containing an active drug, sodium hyaluronate and trehalose; the weight-average molecular weight of the sodium hyaluronate is 150 kDa-280 kDa; the substrate is formed by a photocuring resin monomer, a photoinitiator and a solvent, and the photocuring resin monomer comprises diurea alkane dimethyl acrylate and / or triethylene glycol dimethyl acrylate. The soluble microneedle of the application is beneficial to preventing the active drug from diffusing to the substrate, improving the cumulative penetration rate, ensuring the interface bonding strength of the drug-loaded needle body and the substrate and reducing needle breakage by adopting the drug-loaded matrix containing sodium hyaluronate with a specific molecular weight and the substrate with a specific material.
Owner:BEIJING CAS MICRONEEDLE TECH LTD

Gas gathering station volatile organic compound closed recovery system and method

The invention discloses a closed recovery system and method for volatile organic compounds in a gas gathering station, and the method comprises the following steps: firstly, a gas gathering station dehydration skid tail gas treatment system adopts a gas-liquid separation and pressurization combined triethylene glycol dehydration device tail gas treatment total process to treat the dehydration skid tail gas, and then enters a produced water flash evaporator recovery system; dehydration skid tail gas entering the produced water flash steam recovery system is separated through a first-stage inlet separator, separated gas enters a first-stage outlet separator, separated sewage enters a flash evaporation liquid separation tank, a dehydration skid flash evaporator and a produced liquid buffer tank are added into the first-stage outlet separator for gas feeding, then separation is conducted, and the separated gas enters a second-stage outlet separator. The separated sewage enters a flash evaporation liquid separation tank, the separated gas enters a multi-stage outlet separator and is emptied to enter an emptying liquid separation tank and the multi-stage outlet separator for gas-liquid separation, the separated sewage enters a produced liquid buffer tank, and the separated gas enters a raw material gas pipe network; according to the whole system, organic matter volatile gas is recovered while the organic matter volatile gas is treated according to standard requirements, and precious oil and gas resources are saved.
Owner:CHANGQING ENGINEERING DESIGN CO LTD +1

Triethylene glycol dehydration tail gas recycling device

The utility model provides a triethylene glycol dehydration tail gas recycling device, which relates to the technical field of tail gas treatment, and comprises a tank body, one side of the outer surface of the tank body is fixedly connected with a gas inlet pipe, the outer surface of the gas inlet pipe is sleeved with a connecting pipe, and a fixing device is arranged between the gas inlet pipe and the connecting pipe. The fixing device comprises two extending plates, the two extending plates are symmetrically arranged on the two sides of the air inlet pipe, one ends of the two extending plates are fixedly connected with the outer surface of the tank body, and the inner walls of the extending plates are in threaded connection with threaded rods. The threaded rods can drive the clamping plates to synchronously move until the two clamping plates completely clamp the connecting position of the connecting pipe and the air inlet pipe, auxiliary fixing can be conducted between the connecting pipe and the air inlet pipe, and secondary pollution caused by tail gas leakage due to the fact that the air inlet pipe is separated from the connecting pipe under the action of external force can be prevented.
Owner:JEREH (TIANJIN) PETROLEUM ENG & TECH CO LTD

Water-soluble near-infrared fluorescent probe for detecting viscosity of biological system as well as preparation method and application of water-soluble near-infrared fluorescent probe

The invention discloses a water-soluble near-infrared fluorescent probe for detecting viscosity of a biological system as well as a preparation method and application of the water-soluble near-infrared fluorescent probe. The fluorescent probe is prepared by condensing 8-hydroxyjulolidine and 4-methyl-1-(triethylene glycol monomethyl ether) quinolinium salt, the structural formula is shown in the specification, and the probe has a remarkable Stokes shift characteristic and also has the characteristics of high response speed, high selectivity, excellent biocompatibility and the like. The probe can be used for effectively monitoring viscosity changes of stress-induced onion endoepidermis cells and mung bean slice cells and dynamic changes of nystatin-induced viscosity in juvenile zebrafish bodies, and can be applied to imaging analysis of whole mung bean plants and peanut plants. Besides, the obtained fluorescent probe is simple to prepare, high in yield, mature in synthetic route, low in cost and suitable for amplified synthesis and actual production application, and a reliable tool is provided for actual application in the fields of biomedicine, agricultural monitoring and the like.
Owner:XUCHANG UNIV