47results about How to "Fast catalytic speed" patented technology

The invention discloses a compound photocatalyst and a preparation method and application thereof. The compound photocatalyst is formed by compositing metal oxide and quantum dot materials, wherein the metal oxide accounts for, by mass, 80%-99.99% of the photocatalyst, and the quantum dot materials account for, by mass, 0.01%-20% of the photocatalyst, zinc oxide or titanium oxide serves as the metal oxide, and graphene quantum dots serve as the quantum dot materials. The preparation method includes the steps of sequentially conducting stirring, mixing, ultrasonic processing and drying on the metal oxide and the quantum dot materials. The photocatalyst can absorb full-wave-band light of sunlight and can improve the photoelectric conversion efficiency; meanwhile, the photocatalyst can restrain compositing of carriers and comprehensively improve the photocatalytic efficiency; compared with photocatalysts of other types, the photocatalyst has higher catalysis efficiency and a higher catalysis speed for decomposers; the sunlight is more sufficiently and comprehensively used, and the compound photocatalyst has the advantages of being low in price and easy to obtain.

The invention relates to the field of carrier rocket posture control systems, in particular to a hydrogen peroxide posture control system applied to a solid-liquid hybrid power carrier rocket. The system includes four pitching rolling posture control engines and two yawing posture control engines; the two yawing posture control engines are arranged in the positive and negative directions of a Z axis of the outer side of a rocket three-sublevel main engine separately; the first pitching rolling posture control engine is installed on the surface of the main engine, and a 40-degree included angleis formed between the first pitching rolling posture control engine and the negative direction of the Z axis; the fourth pitching rolling posture control engine is installed on the surface of the main engine, and a 40-degree included angle is formed between the fourth pitching rolling posture control engine and the positive direction of the Z axis; the other two pitching rolling posture control engines are installed symmetrically on the surface of the main engine relatively to an XZ plane. According to the scheme, six posture control engines are adopted as propelling force, the number of thrusters is small, invalid loads can be reduced to a great extent, and the conveying capability of the whole carrier rocket is improved. Meanwhile, the failure rate of the posture control system is decreased, and the stability and safety of the system are improved.

The invention relates to a method of utilizing acidic mannase to hydrolyze refined konjac powder to prepare konjac oligosaccharide and belongs to the technical field of food processing. The method includes: utilizing beta-mannase to pre-prepare an enzyme solution, wherein 200-300IU of enzyme is added for each gram of konjac powder; hydrolyzing the refined konjac powder under conditions of 40-60 DEG C and pH 4.5-7.0 to form konjac mannan oligosaccharide suspension; hydrolyzing a mannan oligosaccharide water solution through immobilized yeast technology to remove monosaccharide to form a water solution mainly containing oligosaccharide; obtaining a clarified oligosaccharide solution after being treated by filtering and membrane technology; finally utilizing high-speed centrifugal spraying and drying equipment to spray and dry at the temperature of 180-210 DEG C to obtain a konjac oligosaccharide powder product. The method is short in hydrolysis time and low in energy consumption, yield of prepared konjac obligosaccharide is higher than 70%, and the product is high in purity, low in monosaccharide, good in healthcare effect and suitable for industrialized production.

The invention relates to an Mg / Al / X ternary composite metal oxide catalyst and a preparation method thereof. The catalyst is characterized in that the catalyst consists of magnesium, aluminum and ternary metal elements, and the surface of a catalyst product is distributed with an aperture of which diameter is 1 to 20mu m and a protrusion of which height is 0.1 to 10mu m; and the ternary metal elements contain Ce, Dy, Fe, Mn, Co, Cd, Zn or Ni soluble salt comprising nitrate, hydrochloride, sulfate, phosphate or perchlorate. The preparation method for the catalyst comprises the following processes in turn: precursor preparation, crystallization, secondary crystallization, molding and calcination. The catalyst is applicable to the production process of the conventional kettle-type or intermittent polyether product, has good narrow molecular-weight distribution effect for the synthesis of the polyether product, has high catalytic rate, and can be recycled.

The invention belongs to the technical field of organic polymer materials, and particularly relates to a preparation method of polyester. In the presence of an initiator, thiourea with three hydrogenbonds or an amide catalyst and an alkali are used to catalyze ring-opening polymerization of a cyclic ester monomer to obtain polyester compound. The method has the advantages of simple process, low cost, high reaction rate, controllable process and narrow molecular weight distribution of the obtained product.

The invention discloses a slurry gas detecting method in a pit, and aims to solve the problem of poor real-time performance of existing detecting techniques in the field of slurry gas detection. The detecting method includes that on the basis of an electrochemical detection principle, slurry passes an electrochemical detecting chamber and two layers of filtering films, redox reactions are generated on three electrodes by gas to generate currents, and after signal processing, the currents are transmitted by a transmitting device to a well drilling platform for judgment by on-duty operators. The electrochemical detecting chamber and two layers of filtering film structures formed by a punched-plate composite sintered metal filter and gas-transmitting films are designed, and the slurry gas detecting method is applicable to three-electrode electrochemical testing systems for methane detection as well as signal processing and transmitting devices of gas detecting signals. The slurry gas detecting method is applicable to real-time detection, and real-time slurry gas detection in the pit can be realized, so that blowout accidents can be prevented in advance, geologists are assisted to find and evaluate underground oil gas, and important research value is provided.

The invention belongs to the field of acetic acid preparation realized through methanol carbonylation reaction and particularly relates to a catalyst system for synthesizing acetic acid through methanol carbonylation and application of the catalyst system. The catalyst system for synthesizing acetic acid through methanol carbonylation comprises active rhodium, hydroiodic acid or iodine, methyl iodide, water, a lithium acetate aqueous solution and acetic acid, wherein the mass percentage of active rhodium in the whole reaction system is 800-1000ppm, the content of total iodine in the whole reaction system is 2.8-3.5mol / L, the mass percentage of the lithium acetate aqueous solution in the whole reaction system is 8000-12000ppm, the mass percentage of methyl iodide in the whole reaction system is 8-13%, the mass percentage of the water in the whole reaction system is 2%, and the mass percentage of acetic acid in the whole reaction system is 57-62%. By using the catalyst system, methanol can be converted into acetic acid at high speed and relatively-low pressure, so that the production cost of acetic acid is low, the formula is simple, the production process is easy, and byproducts including CO2, H2 and propionic acid are greatly reduced.

The invention discloses a thermocatalytic treatment volatile organic pollutant gas-collecting device with a filtering function and relates to the technical field of powder packaging. The device comprises rollers and a stabilizing block. Brake pads are mounted on the upper portions of the rollers correspondingly, connecting blocks are arranged above the corresponding brake pads, and supporting plates are mounted at the right sides of the corresponding connecting blocks. The thermocatalytic treatment volatile organic pollutant gas-collecting device with the filtering function is provided with aheating box, a gas injecting port, a heating block, a permeating net, ejection rods, a conveying port and an activated carbon filter net, then a catalytic box at the top is well supported through theejection rods, a user can connect and fix a waste gas exhaust outlet and the gas injecting port well, waste gas is injected into the heating box, the heating block is started when the user uses the device, the heating block can be used for raising the temperature inside the heating box, temperature transmission is achieved through the permeating net, the temperature of the waste gas can be raised,the internal activated carbon filter net can be used for well filtering harmful substances in the waste gas, and finally, the waste gas is conveyed into the catalytic box.

The invention discloses a preparation method of a mesoporous TiO2-SiO2 loaded sulfonated metal phthalocyanine catalyst. The preparation method includes following steps: S1, at room temperature, dispersing mesoporous TiO2-SiO2 in an alcohol-water mixed solvent, adding a sulfonated metal phthalocyanine solution, and stirring for 24h to obtain mesoporous TiO2-SiO2 reaction stoste; S2, subjecting the mesoporous TiO2-SiO2 reaction stoste to suction filtering and vacuum drying sequentially to obtain mesoporous TiO2-SiO2 loaded sulfonated metal phthalocyanine. The mesoporous TiO2-SiO2 loaded sulfonated metal phthalocyanine prepared by the method has the advantages of high selectivity to a catalytic substrate, catecholamine, high catalytic speed and mild reaction condition.

The invention relates to a stirring device, in particular to the stirring device for refining petroleum in Chemical industry. The technical problem to be solved in the invention is to provide the stirring device for refining petroleum in Chemical industry with uniform stirring, impurity filtering and high catalytic speed. In order to solve the technical problem, the invention provides the stirringdevice for refining petroleum in Chemical industry, which comprises a bottom plate and the like, wherein a catalytic tank is arranged at the top of the bottom plate, and a cover plate is connected atthe top of the left side of the catalytic tank in a hinging way; a screen plate is arranged in the middle of the inside of the catalytic tank, and a mixing device is arranged at the upper part of thecatalytic tank; a stirring device is arranged at the lower part of the catalytic tank. The stirring device for refining petroleum in Chemical industry provided by the invention achieves the effects of stirring evenly, filtering impurities and increasing the catalytic speed. The device firstly mixes the crude oil and the catalyst by a stirring roller, then filters the impurities through the screenplate, and then stirs the crude oil and the catalyst by the stirring device to achieve the effect of fully catalyzed mixing.

The invention belongs to the nano-biotechnology and a nano-catalysis aquaponics method. The existing aquaponics technology has the disadvantages that the fish excrement decomposition speed is low, aquaponics starting time is long and production efficiency is low. The method includes the steps of preparing aquaponics nano-catalysts, smashing tourmaline, medical stone and zeolite till the density of meshes reaches 2500, accurately weighing purple grit mud, tourmaline, nanometer titania, nanometer magnesia, medical stone and zeolite, mixing all the compositions, pressing the mixture into a grain shape or a tablet shape with water content of 20%, sintering the mixture at a temperature of 1100 DEG C to 1200 DEG C for 10 hours, placing the nano-catalysts and aquaponics microbial strain bacillus into a fish breeding water body, pumping out fish breeding pool water to be used for vegetable planting, making water absorbed by vegetables flow back into the fish breeding water body, and repeating the circulating. The nano-catalysis aquaponics method has the advantages of being high in catalysis speed, quick in fish excrement decomposition, and capable of shortening the aquaponics starting time, saving resources and improving the aquaponics production efficiency.

The invention relates to a nickel-based magnetic compound material as well as a synthesis method and application thereof. The synthesis method comprises the following steps: adding deionized water into NiCl2.6H2O, N,N'-bis(4-methylene pyridine)benzene-1,4-dicarbonamide and trimesic acid, carrying out hydrothermal reaction in a high pressure reactor, and generating an organic ligand Ni complex [Ni3(4-bmbpd)3(BTC)2(H2O)4].4H2O; and grinding and smashing the Ni complex by adopting an agate mortar, dispersing into ethyl alcohol, grinding by adopting a ball grinding mill, carrying out centrifugal separation to obtain a microcrystalline Ni complex material, placing into a tubular furnace under the protection of nitrogen, and calcining, so that the nickel-based magnetic compound material is obtained. The nickel-based magnetic compound material is applied to photocatalytic degradation of an organic dye pollutant material. The nickel-based magnetic compound material provided by the invention has the advantages that catalysis speed is high, efficiency is high, recycling and reusing can be facilitated, photocatalytic degradation rate on a methylene blue organic pollutant can reach 96% and thenickel-based magnetic compound material can be taken as a methylene blue organic pollutant photocatalytic degradation material.

The invention discloses a micron-scale elemental copper catalyst and a preparation method and application thereof. According to the key points of the technical scheme, the micron-scale elemental copper catalyst is prepared by the steps of reacting copper salt with an organic ligand to form a precursor and then performing calcination under the protection of nitrogen at the temperature of 400 to 800 DEG C, wherein the molar mass ratio of the copper salt (n) to the organic ligand (n) is (1-4) to 1, the copper salt is Cu(NO3)2.3H2O, and the organic ligand is 1,3,5-trimesic acid, terephthalic acid, isophthalic acid, phthalic acid, formic acid or 4,4',4''-s-triazine-1,3,5-three-para aminobenzoic acid. The invention further discloses the preparation method of the catalyst and the application of the catalyst to processing of nitrophenol waste water. The micron-scale elemental copper catalyst has the advantages of environmental friendliness, simple preparation process, high innovativeness and practicability and the like, nitrophenol pollutants in organic waste water can be effectively catalyzed and degraded, and the catalyst has circulating renewable use performance.

The invention provides a catalyst for improving the content of cycloalkane in tar through microwave pyrolysis of low-rank coal as well as a preparation method and application of the catalyst, belonging to the technical field of microwave catalytic pyrolysis of low-rank coal. According to the catalyst for improving the cycloalkane content in the tar through microwave pyrolysis of the low-rank coal, catalytic active substances play a main catalytic role, and a cocatalyst can improve the connecting capacity of a catalyst carrier and the catalytic active substances, so the catalytic active substances are not leached in a reaction process, and the stability and the service life of the catalyst are improved; and the catalyst carrier has a high dielectric coefficient and a large specific surface area, can effectively improve the microwave absorption capability of the whole catalyst, improves a heating rate, accelerates a reaction speed, promotes a pyrolysis reaction, promotes the generation of small molecular free radicals, and increases the yield of pyrolysis tar and the content of cycloalkane in the pyrolysis tar.

The invention discloses an efficient clearing method for scale in an evaporation tank. The method comprises the following steps of (1) clearing residual juice, specifically, washing the residual juicein an evaporation tube for 3-5 minutes; (2) carrying out first-stage descaling, specifically, carrying out heating firstly by utilizing waste gas and a heating tube of the evaporation tank, then blowing cold air inside for cooling, and then enabling part of the scale to fall off by utilizing ultrasonic waves of an ultrasonic generator; (3) carrying out secondary descaling, specifically, carryingout soaking for 30-60 minutes after carrying out high-pressure washing by utilizing a dissolving agent, then carrying out high-pressure washing again for 15-30 min, and then discharging sewage; and (4) carrying out deep washing, specifically, carrying out high-pressure washing on the wall of the evaporation tank and the heating tube for 1-10 minutes by using clean water, and after discharging thecleaning sewage, introducing the waste gas for drying. The efficient cleaning method for the scale in the evaporation tank has the advantages of being simple, convenient and rapid to operate, environmentally friendly, energy-saving, good in cleaning effect and high in speed.

The invention discloses a preparation method of a jellyfish-shaped carbon nitride photocatalytic material with high specific surface area. The main preparation process is as follows: performing combustion on a raw material hydrocarbon in the air and enabling one part of the raw material hydrocarbon to be cracked to generate carbon black; performing stirring and ultrasonic treatment on a reaction mixture of melamine and polyacrylamide at room temperature, and transferring the reaction mixture into a drying oven to dry; putting the product into a muffle furnace, heating at 500 to 600 DEG C and at the heating rate of 20 DEG C / minute for 100 to 150 minutes, adding the obtained carbon black when the temperature is decreased to 300+ / -10 DEG C, mixing, stirring uniformly, and grinding by an agatemortar into uniform powder to obtain the novel jellyfish-shaped g-C3N4 photocatalytic material with high specific surface area. In the prepared jellyfish-shaped g-C3N4 photocatalytic material with high specific surface area, the specific surface area of the g-C3N4 is increased by 10 to 30 times, the carbon black can serve as an ultraviolet stabilizer due to the light stability, and the durabilityof the photocatalytic material is improved. The preparation method is cheap in raw material, simple in process and suitable for industrialized mass production.

The present invention provides a coal liquefaction catalyst and a coal liquefaction method using the coal liquefaction catalyst. The coal liquefaction catalyst comprises 1-99 wt% of hydroxyl iron oxide and 99-1 wt% of iron sulfide, wherein sulfur in the iron sulfide is 0.46-45 wt% of the total mass of the catalyst. The present invention further provides a method for carrying out coal liquefaction by using the catalyst. The method comprises: adding the coal liquefaction catalyst to a coal oil mixture under an air-free condition, uniformly mixing to obtain a slurry mixture, mixing with hydrogen, preheating, carrying out a hydrogenation reaction at a certain temperature under a certain pressure, and separating after completing the reaction to obtain the coal liquefaction material. The coal liquefaction catalyst has advantages of low catalysis cost and good catalysis effect.

The invention discloses a mesoporous silicon dioxide-loaded metal phthalocyanine catalyst and a preparation method thereof. The preparation method comprises the following steps of: in the preparation process, using a certain amount of tetra alkyl silicate and emulsifying agent to prepare an ethyl alcohol solution, gradually adding into a deionized water solution containing a certain amount of the template agent and the emulsifying agent, and stirring for 2h at room temperature; transferring into a reaction kettle, crystallizing for a period of time, cooling to room temperature, filtering and washing, drying, and calcining at high temperature, so as to obtain metal ion-modified mesoporous silicon dioxide microspheres; (2) mixing the mesoporous silicon dioxide microspheres, the catalyst, phthalic anhydride, ammonium chloride and urea according to a certain ratio, putting into a reaction kettle containing an organic solvent, heating to reach the reflux conditions, stirring and reacting for 2h, sucking and filtering, washing until the filtrate is in a neutral state, and drying, so as to obtain the mesoporous silicon dioxide-loaded metal phthalocyanine. The mesoporous silicon dioxide-loaded metal phthalocyanine catalyst is characterized in that the types of metal ions are rich, the content is high, the selectivity on catalyzing primer is high, the catalyzing speed is high, and the reaction condition is mild.

The invention discloses a catalyst for decomposing hydrogen peroxide as well as a preparation method and a use method of the catalyst. Raw materials of the catalyst comprise an active component and a catalyst carrier, wherein the active component is prepared from Al2O3, SiO2, CeO2, ZrO2, MgO, La2O3, TiO2, F2, Nd2O3 and Fe2O3; the catalyst carrier is prepared from CaO, PdO, HfO2, P2O5, K2O, HCl, Rh, ZnO and As2O3. The preparation method of the catalyst comprises the following steps: uniformly mixing the raw materials and then putting a mixture into a mold; carrying out high-temperature sintering at the temperature of 900 to 1100DEG C to obtain a porous ceramic solidified material, namely the catalyst. The use method of the catalyst comprises the following steps: firstly, introducing the hydrogen peroxide gas into an isolator, and carrying out sterilization treatment; secondly, decomposing the remaining hydrogen peroxide gas by the catalyst until the concentration of the gas is reduced to below 1ppm. The catalyst provided by the invention has the advantages of high catalytic speed, stable catalytic effect and good efficiency and safety.

The present invention relates to biocatalysts catalyzing the formation of α-olefins. In particular, the invention provides polypeptides with improved decarboxylase activity on C10-C16 free fatty acids, more particularly on C10 or C12 free fatty acids, as compared to the P450 fatty acid decarboxylase isolated from the Staphylococcus massiliensis strain S46 (Sm46). The invention further provides recombinant nucleic acids and vectors comprising the coding sequences encoding these polypeptides, genetically engineered host cells expressing said polypeptides and methods for the production of C9-C15 α-olefins, more particularly C9 or C11 α-olefins, using said polypeptides or said host cells.

The invention relates to a quick-drying high-gloss varnish of automobile refinishing paint and a preparation method of the varnish. The varnish comprises a component A and a component B, and the massratio of the component A to the component B is (2-6):1. (1) The component A comprises the following components in percentage by mass: 60-65% of acrylic resin, 30%-40% of a solvent and 4%-7% of an assistant; and (2) the component B comprises the following components in percentage by mass: 80-85% of a polyisocyanate curing agent and 15-20% of a solvent. Compared with the prior art, the varnish provided by the invention has the following advantages that the special modified acrylic resin and a catalyst are used, so that grinding and polishing can be carried out after 25 minutes at a normal temperature (25 DEG C) while performance of the varnish is ensured.

The invention relates to an enzyme pre-catalysis-magnetosonic catalytic oxidation deep treatment method for water. According to the method, waste water subjected to physicochemical and biochemical twp-grade treatment is fed into an enzyme pre-catalysis reactor, and an SKL-composite enzyme is added to catalyze reactions; then the waste water is subjected to a multiple-potential-difference multi-metal chemical catalysis reaction; hydrogen peroxide is added to perform a strong oxidation reaction; generated hydroxy free radicals (.OH) and organic pollutants are subjected to a rapid chain type reaction, and harmful compounds are oxidized into CO2, H2O or mineral salts; objectives of degrading pollutants and fully utilizing agents are achieved; solid liquid separation is performed to remove SS; and PAM is added. The method overcomes the defects that emission standards cannot be stably met, and treating costs are at an all-time high. The method overcomes the problem that a large amount of iron sludge is generated in a traditional homogeneous Fenton reaction process, reduces secondary pollution, reduces the treating cost, and achieves catalytic pollutant degradation in a condition near a neutral condition.

The invention discloses a biomass particle catalytic device. The device comprises a device casing. The bottom of an inner cavity of the device casing is fixedly connected with a compression motor frame, and a compression motor is fixedly connected to the top of the compression motor frame, the output end of the compression motor is fixedly connected with a first transmission pulley, the surface ofthe first transmission pulley is in transmission connection with a transmission belt, the first transmission pulley is connected with a second transmission pulley through the transmission belt, one side of the second transmission pulley is fixedly connected with an extrusion rotating shaft, the upper half portion of the inner cavity of the device casing is provided with a catalytic chamber. Due to the fact that the upper half portion of the inner cavity of the device casing is provided with the catalytic chamber, catalyzed raw materials can be directly introduced into a feeding funnel througha feeding hole after catalysis of the raw materials, the device size is reduced, more catalytic devices can be placed on the same area, and the production efficiency is improved.

The invention discloses a high-efficiency integrated treatment process for landfill leachate membrane concentrate, which combines (1) bio-enzyme oxidation, (2) short-cut nitrification and denitrification, (3) multi-phase metal chemical catalysis and (4) free radical oxidation processes, and applies an enzyme pre-oxidation reactor, a short-cut denitrification device, a magnetoacoustic catalytic reactor and a catalytic oxidation reactor for the process provided by the invention. A vertical flow type sedimentation tank and a microwave ultrasonic reaction device are adopted for implementation; the treated effluent reaches the discharge standards required by the table 2 and the table 3 of the Pollution Control Standard for the Landfill Site of Municipal Solid Waste (GB16889-2008); the method is a full-quantitative treatment process in a real sense, and thorough degradation and removal of pollutants are realized.

The invention discloses a micron-scale elemental copper catalyst and a preparation method and application thereof. According to the key points of the technical scheme, the micron-scale elemental copper catalyst is prepared by the steps of reacting copper salt with an organic ligand to form a precursor and then performing calcination under the protection of nitrogen at the temperature of 400 to 800 DEG C, wherein the molar mass ratio of the copper salt (n) to the organic ligand (n) is (1-4) to 1, the copper salt is Cu(NO3)2.3H2O, and the organic ligand is 1,3,5-trimesic acid, terephthalic acid, isophthalic acid, phthalic acid, formic acid or 4,4',4''-s-triazine-1,3,5-three-para aminobenzoic acid. The invention further discloses the preparation method of the catalyst and the application of the catalyst to processing of nitrophenol waste water. The micron-scale elemental copper catalyst has the advantages of environmental friendliness, simple preparation process, high innovativeness and practicability and the like, nitrophenol pollutants in organic waste water can be effectively catalyzed and degraded, and the catalyst has circulating renewable use performance.

The invention discloses a sewage treatment device, the structure of which comprises a sewage inlet, a sewage treatment box, a motor installation box, and a water outlet. The sewage inlet and the water outlet are set up in a symmetrical structure. The boxes are connected, and the outer wall of the sewage treatment box is provided with a motor installation box, and a motor is fixed in the motor installation box, and the motor installation box is fixedly connected with the sewage treatment box. Rotate to tighten or loosen, change the displacement of the moving light projection body, so that the moving light projection body achieves a spiral displacement, so that it can receive light projected from multiple directions and reflect it out, so as to increase the luminous flux in the sewage , by increasing the flux of visible light in sewage, thereby accelerating the catalytic speed of titanium dioxide in sewage.

The invention provides a pi-energy fuel catalyst core. The pi-energy fuel catalyst core comprises crystals and a carrier. The carrier is made of fluorelastomer and is of an ellipsoid eight-sector structure. Various technical elements like high energy composite materials and rare metals are adopted in the crystals. Seven types of the high-frequency vibration energy crystals at different frequenciesare manufactured. The seven types of the different crystals can produce far infrared rays and near infrared rays at the same time, and the far infrared rays and the near infrared rays all belong to permanent carriers produced through physical endogenous factors. The crystals are vertically implanted onto the carrier, so that a fuel catalyst core body is formed, and the service life of the fuel catalyst core body is longer than ten years. The fuel catalyst core body is connected with a built-in clamping ring of an oil tank oil filler and a stainless steel chain, and thus the fuel catalyst corebody can be taken out for replacement conveniently or be used for other purposes. A telescopic clamping ring is arranged on the inner wall of the oil filler. The pi-energy fuel catalyst core is simple in structure and convenient to install and use, and due to the fuel catalyst core, other former engine structures like a former engine circuit system, an oil supply system, a fuel spray nozzle system and an air throttle system do not need to be changed.

The invention discloses a making method of pineapple wine, which comprises the steps, such as, selecting mature fresh pineapples that are free of diseases or rotting, peeling, and juicing; adding potassium metabisulfite; adding pectinase; inoculating a yeast; adjusting sugar degree of pineapple juice while adding a fermenting aid; mixing two fruit wines; continuing to ferment, sucking out clear pineapple rice wine, adding bentonite, and allowing to clarify; after clarifying, sucking upper clear pineapple rice wine by siphoning, aging, and filtering with a sterilization membrane filter to obtain the pineapple wine. The pineapple wine has the advantages of bright color, strong fruit aroma, mellow taste and good body stability.