67results about How to "Guaranteed Low Temperature Performance" patented technology

The invention discloses a method for hydrogenation of medium-low temperature coal tar to produce large-specific weight aviation kerosene. The method includes: fractionating the medium-low temperature coal tar to obtain light fraction and heavy fraction, mixing the light fraction with hydrogen and leading the mixture into a hydrotreating reaction area to contact a hydrogenation protective catalyst and a hydrofining catalyst in order to undergo hydrogenation reaction; separating the hydrofining effluent, making the obtained liquid phase product enter a fractionating tower; bringing the 140-290DEG C kerosene fraction obtained by fractionation into a hydro-upgrading reaction area where a hydro-upgrading catalyst containing amorphous aluminium silicon and modified Y zeolite is adopted, and performing hydro-upgrading reaction in the presence of hydrogen; subjecting the hydro-upgrading effluent into a hydrofinishing reaction area to undergo hydrofinishing reaction, and separating the hydrofinishing product to obtain the large-specific weight aviation kerosene. The method provided by the invention adopts the medium-low temperature coal tar as the raw material to maximumly produce the large-specific weight aviation kerosene with the advantages of high density, volume, high volume calorific value, low aromatic hydrocarbon content, and good low temperature performance.

The invention discloses a method for enhancing the high temperature resistance and low temperature resistance of an aluminum electrolytic capacitor, which includes the preparation of an electrolyte, and the electrolyte includes the following raw materials in parts by weight: main solvent: 48-80%; auxiliary solvent: 10-32%, solute : 15-30%, additives: 0.3-3.2%, wherein, the solvent composed of the main solvent and the auxiliary solvent is a liquid with low saturated vapor pressure; the solute is tetramethylammonium maleate, ammonium adipate, triethylamine, One or more of 1,2-dimethylimidazolium phosphoric acid and phosphorous acid. Due to the selection of solvents with low saturated vapor pressure, the ratio of solutes is increased to ensure that the electrolyte does not condense at low temperature and the solutes do not precipitate; adding hydrogen absorbing agents and water suppressing agents reduces the internal pressure of the product; adding inhibitors and low leakage agents, The occurrence of high-temperature characteristic defects such as too fast recovery of electric leakage is prevented; the invention can also effectively ensure the low-temperature stability of the electrolyte, and provide guarantee for the stable operation of the LED driving power supply.

The invention discloses a steel plate for a low-temperature pressure container and a preparation method of the steel plate, the steel comprises the chemical components of, by weight, 0.110-0.140% of C, less than or equal to 0.15% of Si, 1.30-1.60% of Mn, less than or equal to 0.015% of P, less than or equal to 0.005% of S, 0.21-0.30% of V, 0.0090-0.0220% of N, less than or equal to 0.020% of Alt,and the balance Fe and inevitable impurities, and meanwhile, the components satisfy the conditions that V / C is greater than or equal to 1.6 but smaller than or equal to 2.8 and V / (C+Si) is greater than or equal to 0.9 but smaller than or equal to 1.25 simultaneously. According to the steel plate for the low-temperature pressure container and the manufacturing method thereof, the steel strength ishigh, the low-temperature impact toughness is good, KV<2> is greater than or equal to 100 J at -70 DEG C, an excellent manufacturing material is provided for the low-temperature pressure container, afoundation is laid for the large scale and light weight of the movable type pressure container, and the carrying efficiency and the economic benefit of the movable type pressure container are greatlyimproved.

The invention discloses a method for hydrogenation of medium-low temperature coal tar to produce refrigerator oil base oil. The method includes: fractionating the medium-low temperature coal tar to obtain light fraction and heavy fraction, mixing the light fraction with hydrogen and leading the mixture into a hydrotreating reaction area to contact a hydrogenation protective catalyst and a hydrofining catalyst in order to undergo hydrogenation reaction; separating the hydrofining effluent, making the obtained liquid phase product enter a fractionating tower; bringing the 320-350DEG C diesel fraction obtained by fractionation into a hydro-upgrading reaction area where a hydro-upgrading catalyst containing amorphous aluminium silicon and modified Y zeolite is adopted, and performing hydro-upgrading reaction in the presence of hydrogen; subjecting the hydro-upgrading effluent into a hydrofinishing reaction area to undergo hydrofinishing reaction, and separating the hydrofinishing product to obtain the refrigerator oil base oil. The method provided by the invention adopts the medium-low temperature coal tar as the raw material to produce the refrigerator oil base oil with the characteristics of good low-temperature fluidity, corrosiveness, intersolubility with refrigerant and oxidation stability.

The invention discloses a method for producing white rubber filling oil base oil through catalytic slurry oil hydrogenation. The method comprises the following steps: catalytic slurry oil is subjected to fractionation, such that a light fraction and a heavy fraction are obtained; the light fraction is mixed with hydrogen, and the mixture enters a hydrogenation treatment reaction zone; the mixture sequentially contacts a hydrogenation protection catalyst, a hydro-refining catalyst and a hydro-upgrading catalyst A, such that a hydrogenation reaction is carried out; a hydrogenation treatment effluent enters a hydro-upgrading reaction zone; a hydro-upgrading catalyst B containing amorphous silica-alumina and modified Y zeolite is adopted in the hydro-upgrading reaction zone, and a hydro-upgrading reaction is carried out under the existence of hydrogen; a hydro-upgrading effluent enters a hydro-finishing reaction zone, and is subjected to a hydro-finishing reaction; and a hydro-finishing product is separated, such that the rubber filling oil base oil is obtained. According to the invention, the catalytic slurry oil is adopted as a raw material, and can be used for producing the white rubber filling oil base oil with good low-temperature fluidity, good intersolubility with rubber, and good oxidation stability.

The invention provides a transformer oil base oil and a preparation method thereof. The preparation method comprises the following steps: 1) fractionating a coal direct liquefied oil to obtain a diesel fraction, wherein the distillation range of the diesel fraction is 290-330 DEG C; 2) performing hydrotreating reaction on the diesel fraction to obtain a hydrogenation product; 3) subjecting the hydrogenation product to a hydro-upgrading reaction to obtain a first transformer oil base oil; 4) subjecting the first transformer oil base oil to a hydrogenation replenishing reaction to obtain a second transformer oil base oil; wherein the coal direct liquefied oil comprises oil A and oil B, wherein the volume ratio of the oil A to the oil B is (1:1) to (1:10), wherein the oil A and the oil B bothcontain a certain amount of chain alkane, cycloalkane, monocyclic aromatic hydrocarbon, bicyclic aromatic hydrocarbon and tricyclic aromatic hydrocarbon, the sum of the contents of the components isequal to 100%. The preparation method has short process flow, low energy consumption, high target product yield and excellent performance.

The invention proposes an additive for a non-aqueous electrolyte of a lithium ion battery and preparation method and application thereof. The additive has the following molecular structure shown in aformula (1), wherein R1 and R2 respectively express fluoro group or trifluoromethyl, n and m are respectively 0, 1 or 2, A is selected from one of the following structures shown in the specification,and * expresses connection sites. After the additive is applied into the electrolyte of the lithium ion battery, the reduction of the initial capacity of the battery can be prevented, the initial discharging capacity is improved, the battery expansion after high-temperature placing is reduced, the charge-discharge performance of the battery is improved, and the cycle frequency is increased.

The invention relates to a lithium ion battery electrolyte which comprises a lithium salt, an organic solvent, a ureide compound, a boron-containing compound and a functional additive. The lithium ion battery electrolyte contains the unique combination of the ureide compound and the boron-containing compound, and the ureide compound can preferentially form a film at a negative electrode and is matched with other low-impedance film-forming additives to form a film, so that the low-temperature performance and the cycle performance are ensured. Meanwhile, the ureide compound has a stabilizing effect on the high-nickel positive electrode, and the high-temperature storage performance of the battery is improved. The boron-containing compound can stably form a film at a negative electrode, boron atoms have a modification effect on a positive and negative electrode interface film, the film impedance is reduced, and the cycle performance and low-temperature performance of the battery are improved. According to the lithium ion battery electrolyte, the high-temperature storage performance, the low-temperature performance and the cycle performance of a high-nickel positive electrode lithium ion battery can be improved.

The invention discloses a sleeving method of inner and outer containers of an LNG (Liquefied Natural Gas) storage tank. The sleeving method comprises the steps of (1) preparing an outer container; (2) preparing an inner container; (3) preparing for sleeving; and (4) sleeving. Holes are formed in upper support points of the A-A and B-B support sections of the outer container, backing plates II are welded on lower support points of the A-A and B-B support sections of the outer container, an outer support ring is welded on a lower support point of the A-A section, and a glass fiber reinforced plastic support is inserted. Backing plates and an inner support ring are welded on support points of the inner container. The inner container is fixedly connected with a counterweight container, a connecting steel pipe is lifted, and the inner container is moved to sleeve. When the B-B section of the inner container reaches an inlet, the outer support ring sleeves the outer surface of the glass fiber reinforced plastic support filled with heat insulating materials, the glass fiber reinforced plastic support is pressed into the lower inner support ring, and the outer support ring and the glass fiber reinforced plastic support are supported to sleeve together with the inner container. In a specified position, the inner container falls so as to compress the glass fiber reinforced plastic support. The outer support ring of the B-B section is welded on the backing plate II, and then the upper support structure is welded, so that sleeving is completed. According to the sleeving method, the full penetration rate of the outer container is increased, leakage points of the outer container are reduced, and the vacuum leakage rate of an interlayer between the inner and outer containers is reduced.

The invention discloses a steel plate used for a high-tenacity low-temperature pressure vessel and a manufacturing method thereof. Steel comprises the following chemical components including, by weight, 0.090-0.130% of C, not greater than 0.15% of Si, 1.40-1.80% of Mn, not greater than 0.012% of P, not greater than 0.004% of S, 0.27-0.45% of V, 0.010-0.020% of N, not greater than 0.020% of Alt andthe balance Fe and inevitable impurities; and meanwhile, V / C is greater than or equal to 3 and smaller than or equal to 4, and V / (C+Si) is greater than or equal to 1.2 and smaller than or equal to 3.The steel provided by the invention is high in strength and good in low-temperature impact toughness, the minus 60 DEG C KV2 is greater than or equal to 80 J, an excellent manufacturing material is provided for the low-temperature pressure vessel, a foundation is laid for enlargement and lightweight of the low-temperature pressure vessel, furthermore, the carrying efficiency of the movable pressure vessel is greatly improved, and the economic benefit of the movable pressure vessel is greatly increased.

The invention discloses a method for hydrogenation of medium-low temperature coal tar to produce refrigerator oil base oil. The method includes: fractionating the medium-low temperature coal tar to obtain light fraction and heavy fraction, mixing the light fraction with hydrogen and leading the mixture into a hydrotreating reaction area to contact a hydrogenation protective catalyst and a hydrofining catalyst in order to undergo hydrogenation reaction; separating the hydrofining effluent, making the obtained liquid phase product enter a fractionating tower; bringing the 320-350DEG C diesel fraction obtained by fractionation into a hydro-upgrading reaction area where a hydro-upgrading catalyst containing amorphous aluminium silicon and modified Y zeolite is adopted, and performing hydro-upgrading reaction in the presence of hydrogen; subjecting the hydro-upgrading effluent into a hydrofinishing reaction area to undergo hydrofinishing reaction, and separating the hydrofinishing product to obtain the refrigerator oil base oil. The method provided by the invention adopts the medium-low temperature coal tar as the raw material to produce the refrigerator oil base oil with the characteristics of good low-temperature fluidity, corrosiveness, intersolubility with refrigerant and oxidation stability.

The invention discloses a method for hydrogenation of medium-low temperature coal tar to produce transformer oil base oil. The method includes: fractionating the medium-low temperature coal tar to obtain light fraction and heavy fraction, mixing the light fraction with hydrogen and leading the mixture into a hydrotreating reaction area to contact a hydrogenation protective catalyst and a hydrofining catalyst in order to undergo hydrogenation reaction; separating the hydrofining effluent, making the obtained liquid phase product enter a fractionating tower; bringing the 280-320DEG C diesel fraction obtained by fractionation into a hydro-upgrading reaction area where a hydro-upgrading catalyst containing amorphous aluminium silicon and modified Y zeolite is adopted, and performing hydro-upgrading reaction in the presence of hydrogen; subjecting the hydro-upgrading effluent into a hydrofinishing reaction area to undergo hydrofinishing reaction, and separating the hydrofinishing product to obtain the transformer oil base oil. The method provided by the invention adopts the medium-low temperature coal tar as the raw material to maximumly produce the transformer oil base oil with the advantages of high density, volume, high volume calorific value, low aromatic hydrocarbon content, and good low temperature performance.

The invention discloses a method for hydrogenation of medium-low temperature coal tar to produce large-specific weight aviation kerosene. The method includes: fractionating the medium-low temperature coal tar to obtain light fraction and heavy fraction, mixing the light fraction with hydrogen and leading the mixture into a hydrotreating reaction area to contact a hydrogenation protective catalyst and a hydrofining catalyst in order to undergo hydrogenation reaction; separating the hydrofining effluent, making the obtained liquid phase product enter a fractionating tower; bringing the 140-290DEG C kerosene fraction obtained by fractionation into a hydro-upgrading reaction area where a hydro-upgrading catalyst containing amorphous aluminium silicon and modified Y zeolite is adopted, and performing hydro-upgrading reaction in the presence of hydrogen; subjecting the hydro-upgrading effluent into a hydrofinishing reaction area to undergo hydrofinishing reaction, and separating the hydrofinishing product to obtain the large-specific weight aviation kerosene. The method provided by the invention adopts the medium-low temperature coal tar as the raw material to maximumly produce the large-specific weight aviation kerosene with the advantages of high density, volume, high volume calorific value, low aromatic hydrocarbon content, and good low temperature performance.

The invention discloses a method for preparing a rubber asphalt mixture. The method comprises the following steps: adding tyre rubber powder into the road petroleum asphalt, and carrying out the stirring and reaction for 45 to 120 minutes to prepare the rubber asphalt; and adding N,N'-ethidence dioleamide into the heated stone material in the mineral aggregate, stirring the mineral aggregate evenly, then adding the rubber asphalt into the mineral aggregate, and stirring the mixture evenly to obtain the composite modified rubber asphalt mixture finished product. The obtained rubber asphalt mixture can simultaneously improve the high temperature performance and bonding performance of the rubber asphalt mixture.

The invention provides an asymmetrical poly star polymer as well as a preparation method and application thereof, and belongs to the field of a high-molecular polymer. The polymer has a structural general formula of (S1)nT(S2)m, wherein S1 is X1-(EP)a; X1 is polydivinylbenzene cores; EP is polyisoprene arms; a is the arm number; the value range of the a is 3 to 20; S2 is X2-(EB)b; the X2 is polydivinylbenzene cores; EB is polybutadiene arms or the polyisoprene arms; b is the arm number; the value range of the b is 3 to 20; the m and the n are positive integers; the value ranges of the m and the n are both 1 to 20; T is a coupling agent. The invention also provides a preparation method of the asymmetrical poly star polymer. The invention also provides application of the asymmetrical poly star polymer as a lubricating oil viscosity index improving agent. The low-temperature performance is ensured; meanwhile, the high-temperature thickening capability of a viscosity index agent is furtherimproved; the use range is wide; the application to various kinds of basic oil can be realized.

The invention discloses a method for producing white rubber filling oil base oil through catalytic slurry oil hydrogenation. The method comprises the following steps: catalytic slurry oil is subjected to fractionation, such that a light fraction and a heavy fraction are obtained; the light fraction is mixed with hydrogen, and the mixture enters a hydrogenation treatment reaction zone; the mixture sequentially contacts a hydrogenation protection catalyst, a hydro-refining catalyst and a hydro-upgrading catalyst A, such that a hydrogenation reaction is carried out; a hydrogenation treatment effluent enters a hydro-upgrading reaction zone; a hydro-upgrading catalyst B containing amorphous silica-alumina and modified Y zeolite is adopted in the hydro-upgrading reaction zone, and a hydro-upgrading reaction is carried out under the existence of hydrogen; a hydro-upgrading effluent enters a hydro-finishing reaction zone, and is subjected to a hydro-finishing reaction; and a hydro-finishing product is separated, such that the rubber filling oil base oil is obtained. According to the invention, the catalytic slurry oil is adopted as a raw material, and can be used for producing the white rubber filling oil base oil with good low-temperature fluidity, good intersolubility with rubber, and good oxidation stability.