329results about How to "Fully converted" patented technology

The invention discloses a healthy efficient pig raising method. The healthy efficient pig raising method includes steps of 1) selecting a pigsty and a site; 2) feeding reserved sows and boars; 3) feeding pregnant sows; 4) feeding milking sows; 5) feeding nonpregnant sows; 6) managing the pigsty of the sows and managing temperature and humidity; 7) feeding piglets; 8) feeding in care period; 9) feeding in growing period, and 10) feeding in fattening period and specially preparing fodder for the pregnant sows, breast-feeding fodder, milk replacers, care fodder and fodder for medium and large pigs in different stages. By the healthy efficient pig raising method, annual survival piglet number of the sows can be increased, and simultaneously, daily ration can be sufficiently converted by complex phosphoesterasum, and feed conversion rate of pigs is increased. By adopting feed formula without antibiotics and additives containing copper, phosphorous and zinc in high dose, the pigs are healthier.

The invention relates to a method for preparing a health-care food (therapy) product (nutrient juice wine) by use of extracts from cordyceps militaris and cocoon, aiming at extracting multiple nutrient substances with natural activity from cordyceps militaris and cocoon wastes to produce different types of dietary supplements for fully improving the utilization rate of cordyceps militaris and cocoon. The method is characterized in that the nutrient components can be extracted from the cordyceps militaris and the cocoon through freezing and thawing, combined enzymolysis, and a water extraction and alcohol precipitation step-by-step extraction method, and the health-care food (therapy) product has three formulas (in part by weight) according to different functions (requirements): A. nutritive extract of cordyceps militaris and cocoon 85% and assistant 15%; B. nutritive extract of cordyceps militaris and cocoon 95% and assistant 5%; and C. nutritive extract of cordyceps militaris and cocoon 98% and assistant 2%, wherein the assistant can be starch, beta dextrin and the like, can be combined with one of A, B and C formulas to produce the health-care food (therapy) product with different efficacies through the processes such as sterilization, enzymolysis, precipitation, residue filtering, saccharification and fermentation.

The invention relates to the technical field of flue-cured tobacco modulation, in particular to a tobacco flue-curing method for a bulk curing barn. The flue-curing process of the tobacco flue-curing method includes a yellowing period, a withering period, a stem yellowing period, a tobacco leaf drying period and a stem drying period according to factors such as dry-bulb temperature, wet-bulb temperature, drying time, heating rate, variable speed ventilation and tobacco leaf change targets, a color fixing period in the traditional tobacco flue-curing method is prolonged at a fixed point and steady temperature under the condition of hot air circulation, and sufficient decomposition and transformation of amylum, protein and other macromolecular substances in tobacco leaves and forming of aromatic matters are promoted. The tobacco flue-curing method for the bulk curing barn is easy to operate, safe and secure, can keep tobacco leaf yellow to be stable, leaf shrinking degree to be good, oil content to be increased and tobacco leaf aromatic amount to be increased greatly, further can reduce or avoid tobacco leaf roasting damage of green smoke roasting, ash smoke hanging, black bad smoke, lousy smoke roasting and the like, and can obtain high-quality tobacco leaves through roasting.

The invention relates to a method for simultaneously preparing SiO2 aerogel and zeolite by utilizing fly ash, belonging to the technical field of the high-efficiency resource utilization of solid wastes and chemical material preparation. The method is as follows: the fly ash is firstly processed by high-temperature activation and then carries out hydro-thermal synthesis reaction with a sodium hydroxide water solution, soluble glass is catalyzed by a sulphuric acid with certain concentration, or the solution carries out cation exchange resin and is then processed by base catalysis to obtain SiO2 gel; aquagel is processed by solvent exchange / surface modification by utilizing a mixed solution of alcohols / alkanes solvent and trimethylchlorosilane, and the SiO2 aerogel is obtained under the condition of normal pressure and dryness; the fly ash is reacted with NaOH and then filtered to obtain filter residue, and the filter residue is further reacted with the NaOH so as to synthesize fly ash zeolite. The invention is not only a new way of the high-efficiency recycling of the solid wastes, but also a new technical method of the low-cost preparation of the SiO2 aerogel and the zeolite.

The invention relates to a method for preparing nutrient (liquid) beverages and granules of healthcare food (therapy) products by using extractives of cordyceps militaris and cocoons and aims to meet market requirements by producing nutrient healthcare products with different types by using various nutrient substances extracted from waste cocoons of the cordyceps militaris. The method is characterized by comprising the following steps of: firstly extracting the nutrient substances from the cordyceps militaris and the cocoons by adopting freeze thawing, combined enzymolysis and a water-extraction alcohol-precipitation sequential extraction method, and producing nutrient liquors and granules with different functions according to different functions (requirements) and different proportions. According to the method for preparing the nutrient (liquid) beverages and the granules of the healthcare food (therapy) products by using the extractives of the cordyceps militaris and the cocoons, the synergistic effects among nutritional ingredients are adequately exerted, and the use ratios of the cordyceps militaris and the cocoons are improved.

The invention discloses a method for preparing health food capsules by using cordyceps militaris and cocoon extracts, and aims to extract various nutrient substances with natural activities from the cordyceps militaris and cocoon to produce different types of nutrient health products, so that the utilization rate of the cordyceps militaris and cocoon is fully improved, and the market demand is met. The method is characterized by comprising the steps of extracting the nutrient substances from the cordyceps militaris and cocoon by performing freeze thawing, combined enzymolysis and aqueous alcohol precipitation sub-step extracting methods; adding a proper quantity of auxiliary materials into the nutrient substances to fully and evenly stir and sieve to prepare the particles; filling the particles into the capsules; wiping off residual powder adhered to the capsule shells; waxing; polishing; and sterilizing the capsules in a radiation mode after the capsules are packaged so as to obtain the finished product.

The invention relates to a processing method of tea-leaf like sparrow tongue, including main steps of water-removing, wire tidying and shaping, artificial assist shaping and deoiling. The tea leaves like sparrow tongue prepared by adopting the invention have flat, tall and graceful and smooth tea wires, like a sparrow tongue in appearance, are green You Run in colour, are dark green, clear and bright in soup colour, and possess of strong long-lasting fragrance, fresh, pure, daintily and unforgettable taste, light green, uniform and bright colour and complete leaves. Green ingredients in the tea leaves are fixed through water removing by a microwave water removing machine, and alcoholization sterilization is carried out on the tea leaves, thus achieving 'three greens' of product and safety and sanitation; a microwave dryer and a far infrared deoiling machine are used and intermediate temperature intermediate speed alcoholization fragrance improving technology is adopted to promote full inversion and polymerization of inclusion and fragrance ingredients, thus the tea leaves are fragrant in smell and rich and pure in taste. In addition, owing to addition of the microwave water removing machine, the microwave dryer and the far infrared deoiling machine, influence caused by man-induced factor is reduced in production of the tea leaves like sparrow tongue, continuous and clean processing is realized, and product quality and yield are ensured.

The invention discloses a production process for producing an organic fertilizer through concentrating biogas slurry by using a multistage membrane separation technology; the production process comprises the following steps: a, pretreatment: carrying out pretreatment of biogas slurry after anaerobic fermentation through precipitation, aerobic fermentation, solid-liquid separation, primary filtration, homogeneous curing adjustment, deep precipitation, fine filtration and biological bacteria inhibition; b, multistage membrane separation before concentration: carrying out microfiltration membrane separation and ultrafiltration membrane separation of the biogas slurry after fine filtration and biological bacteria inhibition; c, multistage membrane concentration: carrying out multistage membrane concentration of the biogas slurry penetrated fluid obtained by ultrafiltration membrane separation through nanofiltration membrane concentration, reverse osmosis membrane concentration and concentration membrane protection; d, blending: adding large, medium and trace elements and other nutritional ingredients and functional components into the intercepted concentrate obtained by nanofiltration and reverse osmosis membrane separation, blending to obtain a liquid organic fertilizer, and sub-packaging; and e, product packaging. The production process has the advantages of flexible structure, advanced equipment and scientific process layout, can meet resource comprehensive utilization development of biogas slurry of all large and medium sized biogas projects.

The invention discloses a novel method for recovering and treating oxidized exhaust gas generated in phenol production, which comprises the following steps: adopting deep cooling to achieve liquefaction separation of organic matters by reducing the temperature of the exhaust gas to below 5 DEG C, wherein the material recovery rate reaches more than 95 percent; and adopting a Pt catalyst to decompose residual total hydrocarbons and cumene in the exhaust gas at a temperature of between 220 and 450 DEG C to achieve emission after reaching standards. The method can improve the exhaust emission quality, recover effective components in the exhaust gas, and reduce the device loss rate and the device material consumption on the basis of raw water cooling and activated carbon adsorption.

The invention discloses a synthesis method of everolimus. The synthesis method of the everolimus comprises the following steps: based on rapamycin or a rapamycin derivative the 31-hydroxy of which is protected as a raw material, firstly carrying out a reaction on the raw material with triflic anhydride so as to obtain an intermediate 02; then carrying out a reaction on the intermediate 02 with mono-protected glycol so as to obtain an intermediate 03; and de-protecting the intermediate 03 so as to obtain the everolimus. In the process in the invention, the raw material can be fully converted into the intermediate 02 through reacting with triflic anhydride, and the intermediate 02 can be fully converted into the intermediate 03 through reacting with mono-protected glycol; and each step reaction can be fully carried out, and the total yield is greatly improved to above 50%.

The present invention discloses a high specific energy lead-acid battery production method, which belongs to the technical field of lead-acid battery production. By improving of battery production processes, reduction of plate grid weight, improvement of the degree of oxidation of lead powder, and use of special paste mixing equipment, the conventional paste mixing process is appropriately adjusted, the paste coating weight is increased, polar plate curing and drying processes are improved and optimized, formation way is improved, and a good quality process controllable high specific energy lead-acid battery meeting the battery performance requirements can be produced. The high specific energy lead-acid battery can significantly improve the specific capacity of the battery, and the battery specific energy can be improved by reducing of the weight of non-active materials.

The invention relates to the technical field of cold rolls, in particular to a preparation method for cold rolls of super hardness wide width double-zero aluminum foils. The method particularly comprises the following steps: firstly, carrying out anneal process on a blank roll which is made of high chromium alloy materials in a forged mode, then carrying out rough turning process, thermal refining, semi fine turning process and heat treatment, and finally carrying out fine turning process on the blank roll to repair a die until a finished product is obtained. According to the preparation method for the cold rolls of the super hardness wide width double-zero aluminum foils, the high chromium alloy materials and a four-pillar sunken downwards type double-power-frequency heat treatment technology are adopted, the cold rolls are manufactured through full numerical control four-area temperature-controlled liquid nitrogen processing cryogenic treatment, the hardness of roll bodies of the cold rolls can reach 102-104 HSD, the depth of a hardening layer is larger than or equal to 25mm, uniformity of the hardness is within HSD+ / -0.5, length of roll faces exceeds 2300mm, high-grade wide width aluminum foils with width of the finished aluminum foils reaching 2300mm and thickness of 0.0065mm or below 0.0065mm can be rolled, and the preparation method is widely applied to industries such as cigarettes, food, medicine, electrons, photographic apparatuses and chemicals for daily use.

The invention belongs to the field of preparation of tea, and in particular relates to a preparation method of highly fragrant black tea. The preparation method disclosed by the invention comprises the following steps: (1), picking fresh tea leaves, namely using one bud with two leaves, one bud with three leaves and a pair of leaves of same tenderness as the raw tea leaves; (2), spreading, namely spreading the fresh tea leaves in a ventilated, cleaned and dry tedding room, so that the water content of the fresh tea leaves is controlled within 60-68%; (3), carrying out fixation, namely carrying out fixation by using a roller type continuous fixation machine with the rotation speed of 25-35 rpm, controlling the water content of the tea leaves subjected to fixation within 55-63%, and, after taking out, conveying the tea leaves onto a spreading frame through a conveying vibration tank to be blown and cooled; and (4), rolling preliminarily, namely rolling by using a tea roller with the rotation speed of 30-36 rpm for 7-12 min, so that buds and leaves form strips preliminarily, etc. The black tea prepared by using the preparation method disclosed by the invention is tight, thin and uniform in shape, black brown and oleosus in colour and lustre, pure, full-bodied and everlasting in fragrance, pure, mild and sweet after taste, auburnish yellow and bright in tea colour, and black brown, soft, uniform and bright in soaked tea dregs.

The present invention relates to a two-stage down-suction biomass gasifier, the upper part of a gasifier body is connected with a pyrolysis tube, a feed auger is arranged in the pyrolysis tube, the pyrolysis tube is provided with a pyrolysis gas outlet, one end of the pyrolysis tube is connected with a feed hopper, a side upper surface of a feed port of the pyrolysis tube is provided with a returning ash inlet, the feed hopper is internally provided with a two-stage cut-off brake valve, the other end of the pyrolysis tube is communicated with an accumulation ash carbon layer in the gasifier body by an ash falling pipe, the ash falling pipe is internally provided with a two-stage ash falling pipe cut-off brake valve and an ash falling pipe air inlet, an ash removal furnace grate, an ash retainer ring and an ash removal device are arranged under the accumulation ash carbon layer of the gasifier body, the ash removal device is connected with an ash discharge auger by an ash collection hopper, and the ash discharge auger is connected with the returning ash inlet. Tar efficient removal and biomass energy efficient conversion can be realized by pyrolysis and solid product separation and difference processing methods, and by homogeneous partial oxidation of pyrolysis components and smoldering combustion oxidation activation of solid coke, reactivity of the pyrolysis components and the solid coke are enhanced, and efficient tar removal and gasification conversion effects can be ultimately realized.

The invention discloses a roxburgh rose vinegar beverage and a preparation method thereof. The roxburgh rose vinegar beverage is a liquid beverage which is prepared by fermenting the following components in parts by weight: 10 to 50 parts of roxburgh rose dregs, 1 to 5 parts of roxburgh rose fruits and / or 4 to 8 parts of roxburgh rose juice. According to the preparation method, the roxburgh rose dregs are used as the main raw material, and a small amount of roxburgh rose fruits and / or roxburgh rose juice is used to prepare the roxburgh rose vinegar beverage; the preparation process mainly comprises the steps of alcohol fermentation, acetic fermentation, filtration, dilution and seasoning; and compared with a product of the prior art, the prepared roxburgh rose vinegar beverage is rich in nutrient components and genuine in flavor, keeps the unique flavor of roxburgh roses, is convenient and easy to produce, and is lower in cost and easier for industrial mass production. Moreover, the roxburgh rose vinegar beverage is prepared from the commonly discarded roxburgh rose dregs as the main raw material, thus having great significance for comprehensive development and full utilization of the roxburgh roses; and the utilization ratio of the roxburgh roses and the generated economic benefit are far higher than those of the prior art.

The invention relates to citrus Pu'er tea and a preparation method thereof. The preparation method of the citrus Pu'er tea comprises the following steps: (1) pretreating citrus: washing the citrus cleanly, drying in the air, opening a mouth at the top of the citrus to obtain a top cover, digging out pulp in the citrus, and keeping a citrus shape for standby application; (2) pretreating Pu'er tea: adjusting the water content of the Pu'er tea to 18%-35%; (3) loading the Pu'er tea into the citrus, and closing with the top cover; and (4) drying. The citrus Pu'er tea is black and moist in peel color and luster, auburnish red and bright in tea liquid color and luster, mellow and strong in taste, and strong but not astringent.

The invention discloses a methanol diesel fuel complex additive and a preparation method thereof. The complex additive is prepared from the following raw materials in parts by volume: 1-4 parts of diethyl phthalate, 1-8 parts of n-butylamine, 1-9 parts of isooctanol, 1-6 parts of cyclohexanone, 13-42 parts of lauryl methacrylate, 7-30 parts of mixed fatty glyceride, 1-5 parts of phenyl propargyl ether, 1-8 parts of dihexadecyl dimethyl ammonium chloride, 2-12 parts of ethyl formate, 2-14 parts of isooctyl nitrate and 1-6 parts of polyoxyethylene hexadeeylalkyl ether selies. The methanol diesel fuel complex additive can enable methanol diesel fuel to be evenly mixed and to be stably stored for more than 6 months, which effectively improves the fire behaviour of the methanol diesel fuel and inhibits the volatilization when the methanol content is higher; moreover, the production process is simple and the use is convenient, thereby being beneficial to the popularization and application of the methanol diesel fuel.

The invention relates to a processing method for tea flowers. The processing method comprises the following steps: picking the tea flowers, withering, carrying out fixation, drying and packaging. According to the method, a microwave water removing machine is utilized for rapidly finish fixation in short time; meanwhile, in a fixation process, a lot of water molecules are escaped and evaporated from the tea flowers so as to realize the primary drying aim; the color, the flavor, the shape and the taste of the fresh tea flowers can keep unchanged to the greatest extent and effective substances are kept to the greatest extent; the high-aroma and the high-quality tea flowers are prepared.

The invention discloses a method for recycling lithium from a waste ternary lithium ion battery. According to the method, the waste ternary lithium ion battery is detached, an electrode active material is separated out, and is evenly mixed with sodium hydroxide and / or potassium hydroxide, and low-temperature roasting is carried out; a roasted material and water are evenly stirred and mixed, liquid-solid separation is carried out, a carbonate precipitant is added into an obtained liquid phase, and lithium carbonate sedimentation is generated. Through the method, the lithium can be rapidly and efficiently recycled from the waste ternary lithium ion battery, the cost is low, and the method is suitable for industrial application.

The invention discloses a method for processing strip green tea, wherein an artificially assisted shaping and flavoring process is added into the common green tea processing method, so that the shape of tea leaves is tight, thin, round, straight and uniform, and is of a great visual art value; meanwhile, the full conversion and polymerization of the contents and the flavor components are promoted, thus the specific quality characteristics of strong flavor, pure taste and refreshing property are achieved.

The invention discloses a flue-cured tobacco accurate intensive curing technology for tobacco high-temperature induced maturity. According to the flue-cured tobacco accurate intensive curing technology for tobacco high-temperature induced maturity, on the basis of an existing curing barn, the appearance quality of cured tobacco is obviously improved, greenish tobacco is greatly lowered, orange tobacco ratio and first-class tobacco ratio are improved by 25 percent points obviously (P>0.05), and tobacco chemical component coordination is obviously improved. Starch conversion is complete, sugar content is improved by 7 percent points obviously, sugar-alkali ratio is stably kept between 6 and 8, the requirements for strong-flavor style and characteristics are met, and accordingly the quality of tobacco of high-temperature induced maturity is obviously improved. Therefore, the flue-cured tobacco accurate intensive curing technology for tobacco high-temperature induced maturity is an accurate technology which integrates collecting, bonding / clamping, placing curing and curing design of the tobacco of high-temperature induced maturity, and the technology is specially for the tobacco of high-temperature induced maturity and has the advantages of being strong in pertinency, accurate in technology and convenient to produce and operate.

The invention relates to a nutritional and safe soy milk making method of a soy milk maker, and aims at the problems that for a traditional view, water for soaking soybeans is not suitable for soy milk preparation, and dissolving-out condition of a functional component during soy milk making is almost ignored in the prior art. A main functional component soy isoflavone in soybeans plays an important role in the aspects of prevention and treatment for breast cancer and prostate cancer, improvement of climacteric syndrome and osteoporosis, protection for a cardiovascular system and the like. In order to change the misconception and obtain higher-content and high-activity isoflavone soybean milk to improve nutritive values of the soy milk, the soybeans are heated, sterilized and soaked for a long time before soy milk making, after the soybeans are soaked with the method, malignant bacteria in water can be effectively killed, and water for soaking the soybeans can be used for soy milk making; and besides, the activity of beta glucosaccharase in the soybeans can be maintained, glucosidic isoflavone hard to be absorbed by a human body is hydrolyzed into aglycone isoflavone, so that isoflavone in the soybeans are sufficiently released, and a better healthcare effect can be provided for consumers.

The invention relates to a device and method capable of achieving piezoelectric electricity generation and vibration suppression in a rotating and synchronous manner. The device is composed of a rotation assembly, a piezoelectric assembly and a diversion assembly. The rotation assembly is responsible for achieving the rotation function of the whole device. The piezoelectric assembly and the diversion assembly are arranged in an asymmetric manner. The piezoelectric assembly generates electricity through deformation of piezoelectric patches. The diversion assembly generates torque required for rotation through asymmetric hole plates of different hole densities. When passing through cylinder attached columns on the end portions of the piezoelectric patches, seawater can induce the piezoelectric patches to vibrate so that the piezoelectric patches can unceasingly deform and generate continuous current. Moreover, the detouring flow boundary layer on the surface of a marine riser is damaged by rotating diversion plates and the piezoelectric patches, formation of detouring flow vortex is influenced, and suppression of vibration is achieved. The device synchronously achieves piezoelectric electricity generation and vibration suppression by relying on the marine riser.

The invention provides a passion fruit planting method, and belongs to the technical field of agriculture planting. The planting method comprises the steps of cutting seedling-raising, garden selection and land preparation treatment, passion fruit seedling transplanting, shed frame building, shaping and pruning, fertilizer and water management and pest and disease damage controlling. For cutting seedling-raising, a soilless cutting seedling-raising mode is adopted for seedling raising, and a soilless substrate is obtained by fermenting brewer's grain, pig manure, bagasse, coconut shells, potassium fulvic acid, pumpkin vines, humic acid, composite strains, banana stems, polyacrylamide and dried pine needles and then adding inorganic nutrient substances. Accordingly, by strengthening management in the seedling raising stage, the passion fruit seedlings which are high in survival rate, robust in growth and high in disease-resistant capacity are obtained, the planting cost in later period can be lowered, and the overall production cost of passion fruits is lowered.

An eddy current ramjet engine comprises a case, a fuel system and an igniting system. The cross section of the inner chamber of the case is of circular shape. And a combustion chamber and a blowing chamber are installed inside the case. An air intake and an air outtake are installed in the combustion chamber of which the air outtake is connected with the blowing chamber. The cross section area of the combustion air outtake is smaller than the largest cross section area of the combustion chamber. The inner chamber of the blowing chamber is opened and extended towards the blowing direction. The air intake of the combustion chamber is connected to the air intake chamber and the fuel system and the igniting system are arranged correspondingly to the combustion chamber. The engine can be started in a static state by this brand new air admission method. The eddy current is formed by full utilization of circular motion and fluid motion and rotates with increasing speed from the periphery to the center. The eddy current enables fully combust fuel and prevents the combustion chamber from being burned. A spiral jet stream which rotates with increasing speed from the periphery to the center is also formed. The stream can unlimitedly increase the aircraft speed and can help the aircraft reach super speed which can not be reached by current jet engines; and the aircraft speed can be increased by hundreds, thousands or tens of thousands of times than the current aircraft speed.

The invention discloses a cigarette flavoring additive as well as a preparation method and an application. After a biological enzyme is added to tobacco leaves for deep fermentation, effective ingredients of the tobacco leaves are extracted and fermented again, and a novel filter flavoring additive is prepared. When the filter flavoring additive is applied, the additive is dissolved in a corresponding solvent, a product is sprayed to filter tow in the production process of a filter tip, and the additive can also be supported on particles and added to the filter tip or tobacco shred. Negative ingredients in the tobacco leaves can be biologically removed or converted in a targeted manner, and the utilization rate of the tobacco leaf ingredients is increased to the greatest extent. The method is simple in treatment and easy to implement, the obtained cigarette flavoring additive is added to the filter or the tobacco shred, a corresponding cigarette is prepared, and the sensory quality of the cigarette can be effectively improved.

The invention discloses a processing method of floral organic black tea. The method comprises the following steps: selecting raw materials, withering indoors, rocking green leaves, rolling, fermenting the tea leaves, drying with a gross fire, extracting pekoe, cooling and drying with a complete fire. According to the method, a three-time green leaf rocking technology is adopted after the withering process, so that the bud head black tea has the unique fragrances of flowers and fruits and substances in bud heads can be fully converted; a conventional black tea fermentation process is improved, and the black tea is continuously fermented in a fermentation machine, so that the mechanical production of the tea leaves is realized; a pekoe extraction process is added, so that the appearance is relatively attractive; the black tea is produced from single buds as raw materials, the blank of a production process of the bud head black tea is filled, the floral organic black tea is prepared by adopting a creative process of rocking the green leaves, fermenting, extracting the pekoe and drying step by step; tea strips are tight, slender, round and curly, the golden pekoe is fully distributed on the tea strips, the fragrance of dry tea is like the combined fragrance of fruits, honey, flowers, potatoes and the like, and the tea is red and bright in color of tea soup, mellow and fresh in taste, lingering in taste in the throat, and refreshing.

The invention discloses a system and a method used for preparing glycol via hydrogenation of oxalic ester. The system comprises a recycle hydrogen compressor, a charging and discharging heat exchanger, a mixer, a charging protection bed, a recycle hydrogen heater, a hydrogenation reactor, a raw material preheater, a reaction product intermediate heat exchanger, a reaction discharging cooler, and a gas-liquid separation tank; the charging and discharging heat exchanger is connected with the mixer, the charging protection bed, and the recycle hydrogen heater successively; the raw material preheater is connected with the mixer; an outlet of the recycle hydrogen heater is connected with an inlet of the hydrogenation reactor; an outlet of the hydrogenation reactor is connected with the charging and discharging heat exchanger, the reaction product intermediate heat exchanger, the reaction discharging cooler, and the gas-liquid separation tank successively. The method comprises following steps: hydrogen and oxalic ester are heated, and are mixed so as to realize complete evaporation; and obtained mixture is delivered into the hydrogenation reactor so as to obtain glycol via reaction. The system and the method are capable of ensuring needed reaction conditions effectively, controlling reactor bed layer temperature rise stably, realizing full recovery of energy, reducing energy consumption, and ensuring conversion rate of oxalic ester and selectivity of product glycol.

The invention discloses a preparation method of strip-shaped black tea. The method comprises the steps of picking fresh leaves, withering, rolling, fermenting, drying and carrying out far-infrared fragrance enhancing, wherein the step of far-infrared fragrance enhancing is carried out after the step of drying, temperature control fermentation is adopted by the step of fermenting, the step of drying comprises primary drying and sufficient drying, and sufficient drying is carried out after primary drying. The prepared strip-shaped black tea is fine, tight, uniform and tidy, has multiple tips and exposed golden tips, is black and oily in color, is brilliant red in liquor color, is fragrant, sweet and rich in fragrance with fruity flavor, is fresh, mellow, thick, tasty and refreshing in flavor, has aftertaste sweet, and is red, and the tea residue is red bright.