14results about How to "Low freezing point" patented technology

The invention discloses a triazine desulfurizer and a preparation method thereof, and belongs to the technical field of gas purification. The triazine desulfurizer is mainly prepared from the following raw materials in percentage by weight: 20 to 50 weight percent of triazine derivative, 10 to 15 weight percent of sterically hindered amine, 3 to 7 weight percent of stabilizer, 1 to 3 weight percent of synergist, 0.5 to 1.5 weight percent of penetrant, 0.5 to 1.5 weight percent of inhibitor, 1 to 2 weight percent of additive and the balance of water, the preparation method of the triazine derivative comprises the following steps: adding 2-(diphenylphosphino) ethylamine into a toluene solvent, adding a paraformaldehyde aqueous solution in batches under a stirring condition, and reacting for 2-8 hours to obtain the triazine derivative. According to the triazine desulfurizer and the preparation method thereof provided by the invention, the triazine derivative and the sterically hindered amine are taken as a host, and the stabilizer, the synergist, the penetrant, the inhibitor and the assistant are compounded, so that the scaling trend of the triazine desulfurizer in an oil and gas well can be slowed down, the dissolution rate of hydrogen sulfide and the mass transfer rate in a solution are increased, and the desulfurization reaction is promoted; the desulfurization effect and the desulfurization rate are improved, and meanwhile, a very good scale inhibition effect is also achieved.

This invention discloses a low-temperature resistant, high-power aqueous organic-bromine battery, belonging to the field of electrochemical energy storage technology. The invention uses a low-freezing-point bromine-based salt solution with added bromine solid complexing agent as the electrolyte, and a pseudocapacitive organic material as the negative electrode, which possesses ionic universality and can bind metal ions in the solution during the reaction. The positive electrode uses a carbon material as a substrate, where a bromine redox reaction occurs. Simultaneously, the complexing agent can complex bromine in solid form onto the carbon surface, ensuring good stability at both room temperature and low temperatures. The aqueous organic-bromine battery of this invention exhibits high energy density and ultra-high power density at room temperature, maintains high energy density even at low temperatures, and is inexpensive, showing promising application prospects.

The invention relates to the technical field of laundry products, in particular to a low-temperature high-concentration washing liquid and a preparation method thereof. The cleaning agent is prepared from the following components in percentage by weight: 38% of isomerized 1307, 28% of secondary alcohol aeo-9, 10% of propylene glycol, 0.3% of compound enzyme, 2% of glycerol, 21.2% of deionized water and 0.5% of essence. According to the low-temperature high-concentration washing liquid and the preparation method thereof, the isomerized 1307 and the secondary alcohol AEO-9 are compounded according to a specific proportion, and the synergistic anti-freezing effect of the propylene glycol and the glycerol is combined, so that the freezing point of a system is remarkably reduced, the pH value can be adjusted according to the actual situation, and the low-temperature high-concentration washing liquid is prepared. The prepared washing liquid can still keep good fluidity after being stored for a long time at 0 DEG C or even lower temperature, is free of crystallization and solidification, and solves the problem of freezing of highly concentrated products in winter.

The invention discloses a crude oil pour point depressant which comprises a main agent, an auxiliary agent and a high-flash-point organic solvent, and the mass ratio of the main agent to the auxiliary agent to the high-flash-point organic solvent is (25-35): (1-3): (62-74); wherein the main agent is formed by polymerizing ethylene-vinyl acetate, polyacrylic acid octadecanamide and alkyl maleimide according to a molar ratio of (2.8 to 3.2): (1.8 to 2.2): (1.8 to 2.2); the auxiliary agent is one or any combination of oleic acid diethanolamide, N-oleoyl sarcosine and hydroxy fatty acid; the high-flash-point organic solvent is one or any combination of trimethylbenzene, tetramethylbenzene, propylene glycol butyl ether and diethylene glycol monobutyl ether. The invention also discloses a preparation method and application thereof. The crude oil pour point depressant provided by the invention can effectively reduce the condensation point of high-condensation-point crude oil of which the condensation point is greater than 40 DEG C and improve the fluidity of the high-condensation-point crude oil of which the condensation point is greater than 40 DEG C, so that normal transportation of the crude oil is ensured, and powerful support is provided for reducing the operation cost of the high-condensation-point crude oil and ensuring normal transportation of the crude oil.

The application belongs to the technical field of building coatings and relates to a styrene-acrylic emulsion, which comprises the following components in parts by mass: styrene 1-40 parts, butyl acrylate 1-30 parts, acid monomer 0.1-1 part, acrylamide 0.01-1 part, film-forming solvent 0.01-1 part, crosslinking agent 0.01-1 part, anionic emulsifier 0.1-2 parts, non-ionic emulsifier 0.1-2 parts, oxidizing agent 0.01-0.5 part, reducing agent 0.01-0.5 part, initiator 0.01-1 part, pH buffer 0.01-0.5 part, neutralizing agent 0.1-1 part, defoaming agent 0.02-1 part, preservative 0.02-1 part and water 44-56 parts. The application further provides a preparation method of the styrene-acrylic emulsion and application of the styrene-acrylic emulsion in interior wall coating. The interior wall coating prepared by using the styrene-acrylic emulsion does not need solvent, and the coating has excellent washability, low-temperature stability and wash resistance.

This invention discloses the use of a class of polysubstituted cyclic ether compounds as solvents for lithium-ion battery electrolytes. The polysubstituted cyclic ether compounds are alkyl-substituted cyclic ether solvents. These polysubstituted cyclic ether solvents have lower dielectric constants and lower ion desolvation energies, and exhibit good stability with lithium metal / graphite anodes. More importantly, these polysubstituted cyclic ether compounds have no special restrictions on the type of lithium salt. Using these polysubstituted cyclic ether compounds can significantly improve the low-temperature performance of batteries, thus broadening their applicability.

The invention relates to the technical field of zinc-silver reserve batteries, in particular to a low-temperature electrolyte preparation device and method for a zinc-silver reserve battery, and the method comprises the following steps: S1, preparing a basic electrolyte, S2, preparing a composite functional additive, S3, mixing a composite electrolyte, and S4, carrying out vacuum degassing treatment. The device comprises a mixing tank, a liquid density sensor is arranged in the mixing tank, and an additive feeding assembly is arranged at the top of the mixing tank; a rotation driving part is fixedly connected to the top of the mixing tank and fixedly connected with a rotating shaft, and a first stirring paddle assembly is arranged at the bottom of the rotating shaft; the rotating shaft is sleeved with a sleeve, a second stirring paddle assembly is arranged at the bottom of the sleeve, and a transmission assembly is arranged between the second stirring paddle assembly and the rotating shaft. The electrolyte is prepared by introducing the composite functional additive, the working performance of the zinc-silver battery under the wide temperature range condition is improved, the preparation device in a specific stirring mode is combined for preparation, the mixing efficiency of the additive and the basic electrolyte is guaranteed, and the finished product quality of the low-temperature electrolyte is improved.

This invention discloses an IoT chip module encapsulation conveying device, including a CNC guide rail and a carrier block. A laterally movable mounting plate is installed on the CNC guide rail, and a rack is fixedly connected to one side of the CNC guide rail. An air supply mechanism is installed on the mounting plate, and the rack is drivenly connected to the air supply mechanism. A first sliding groove is formed on the mounting plate, and a locking block is provided on the carrier block. This IoT chip module encapsulation conveying device, through the setting of a buffer mechanism, allows the carrier block to slide along the first sliding groove due to inertia the instant the mounting plate stops. The buffer mechanism can buffer the carrier block, thereby reducing the possibility of the encapsulant on the chip flowing out or deforming due to inertia. Through the coordinated arrangement of the rack, air supply mechanism, and buffer damping adjustment mechanism, the buffer mechanism can automatically adjust the damping magnitude according to the speed of the carrier block's movement, further improving the practicality of the device.

The application belongs to the technical field of aqueous zinc ion batteries, and discloses a low-temperature-resistant aqueous zinc ion battery and a preparation method thereof. The low-temperature-resistant aqueous zinc ion battery is constructed by using a single or composite positive electrode material with excellent zinc ion storage performance and ion diffusion dynamics, and using a composite aqueous solution system with various cations and anions combined and regulated as an electrolyte, and cooperating with zinc metal as a negative electrode. The low-temperature-resistant aqueous zinc ion battery is a low-temperature button type, soft package or cylindrical zinc ion battery. The application designs and regulates the interaction and hydrogen bond network distribution of various salt solutes and pure water solvents of the low-temperature-resistant electrolyte, matches the zinc storage positive electrode material with good ion dynamics in a low-temperature environment, and constructs the zinc ion battery with stable working capacity and high specific capacity at an extremely low temperature (‑80℃), which is applied as an energy supply device in various extreme environments.

The application discloses a method for preparing high-density aviation fuel by one-pot degradation of waste PC plastic, which comprises the following steps: taking waste PC plastic as raw material, and adding a double-function synergistic catalyst in a high-pressure reaction kettle; under the joint action of a metal-supported catalyst and a solid superacid additive, the reaction steps of ester bond breaking, intermediate hydrogenation, aromatic ring saturation and hydrogenation deoxidization are continuously completed by one-pot method in the high-pressure reaction kettle, and high-density aviation fuel is prepared with high selectivity. The method avoids the complicated intermediate separation step in the traditional multi-step conversion process, the aviation fuel obtained is mainly propane-2,2-diyl dicyclohexane (C15), the selectivity of which is greater than or equal to 95%, the yield is as high as 95%, the density of the aviation fuel obtained is greater than 0.90 g / mL, the combustion heat is greater than 40 MJ / kg, the freezing point is lower than-35 DEG C, and the aviation fuel has excellent combustion performance and low-temperature performance. The application provides a green and efficient solution for the high-value upgrading and recycling of waste PC plastic, and meets the development strategy of circular economy.

The utility model relates to the technical field of oil exploitation, in particular to a tubular anti-scale and anti-wax oil well pump which comprises a pump cylinder coupling, a pump cylinder, an anti-scale and anti-wax alloy plunger assembly, an anti-scale and anti-wax alloy standing valve assembly, an oil pipe coupling and an anti-scale and anti-wax alloy device. The pump cylinder coupling is in threaded connection with the upper end of the pump cylinder; an anti-scale and anti-wax alloy plunger assembly is arranged in the pump cylinder; the anti-scale and anti-wax alloy standing valve assembly is mounted at the lower end of the pump cylinder; and the tubing coupling is respectively connected with the lower end of the anti-scale and anti-wax alloy standing valve assembly and the anti-scale and anti-wax alloy device. Due to the design of the anti-scale and anti-wax alloy assembly, the contact area between the anti-scale and anti-wax alloy and oil liquid is increased, the oil liquid and the anti-scale and anti-wax alloy can make more sufficient contact and catalysis, formation of new scales can be prevented, and dissolution of old scales is promoted. The wax crystal form is changed by utilizing the conductivity and the surface catalytic characteristic of the anti-scale and anti-wax alloy, so that the freezing point is greatly reduced, and the anti-wax effect in the lifting process is achieved.

The invention relates to the technical field of coal, and provides a coal water slurry additive composition, coal water slurry and a preparation method thereof. The coal water slurry additive composition comprises an anti-freezing agent and a dispersing agent, the mass ratio of the anti-freezing agent contained in the coal water slurry additive composition is 74.0%-96.4%, and the mass ratio of the dispersing agent contained in the coal water slurry additive composition is 2.6%-18.6%. Wherein the anti-freezing agent comprises polyol, a salt compound and an amino organic matter, and the dispersing agent comprises a polycarboxylic acid type dispersing agent. According to the application, the freezing point of the coal water slurry is remarkably reduced through the synergistic cooperation of the polyhydric alcohols, the salt compounds and the amino organic matters; meanwhile, agglomeration of pulverized coal particles is inhibited through the polycarboxylic acid dispersing agent, so that the viscosity of the coal water slurry is reduced, and the solid content is increased.

The invention discloses a zinc-based flow battery electrolyte and application thereof, and belongs to the technical field of electrochemical energy storage. The electrolyte is an aqueous solution containing a zinc salt and an additive, and the additive comprises a calcium salt and a magnesium salt; the additive also comprises one or more of lithium salt, sodium salt and strontium salt. Wherein Ca < 2 + > and Mg < 2 + > can strongly interact with water molecules, and a hydrogen bond network in the electrolyte is effectively weakened, so that the freezing point is remarkably reduced; and a small amount of other added metal cations generate a synergistic effect with Ca < 2 + > and Mg < 2 + >, so that the electrolyte still keeps excellent electrochemical properties such as high ionic conductivity and the like while obtaining an ultra-low freezing point. On the basis, the electrolyte successfully realizes stable circulation of the zinc-iodine flow battery in an extremely low-temperature environment. The electrolyte is low in cost, safe and environment-friendly, and a reliable technical scheme is provided for widening the application scene of the zinc-based flow battery to the extreme low-temperature field.

The application relates to a preparation method of a corn straw-based cellulose skeleton with a core-shell structure and belongs to the field of cellulose skeleton preparation methods. In order to solve the technical problem that the inherent defects of cellulose make the mechanical performance of the cellulose skeleton extracted from straw weak in the current treatment process, the following method is adopted: firstly, the stem pith is subjected to hydrothermal treatment; secondly, delignification treatment is carried out, and the cellulose skeleton is preserved in a solvent; thirdly, the cellulose skeleton is soaked in a replacement liquid, then frozen, and then continuously subjected to freeze drying. Alternatively, the corn stem pith after the hydrothermal treatment in the first step is directly subjected to high-temperature drying in an oven. The application adopts a surface densification process to make the hydrogen bond combination on the surface of the cellulose skeleton, so that a highly directional macroscopic core-shell structure straw cellulose skeleton from the micro-macro is formed. The application is used for preparing a corn straw-based cellulose skeleton with a core-shell structure.