51results about How to "Improve hydrogen supply capacity" patented technology

The invention provides a method for mixing and processing wash oil and direct coal liquefaction oil, which includes the following steps: (a) mixing the wash oil and the direct coal liquefaction oil to be mixed with hydrogen, and enabling the mixture to enter a mixed oil hydrogenation reactor; (b) enabling mixture of the wash oil, the direct coal liquefaction oil and the hydrogen in the step (a) to be contacted with hydrofining catalyst to be subjected to a reaction in the mixed oil hydrogenation reactor; and (c) separating and fractionating objects obtained from the reaction of step (b) and discharged from an outlet of the mixed oil hydrogenation reactor to obtain light distillate oil, medium distillate oil and heavy distillate oil. The heavy distillate oil is mixed with a part of the medium distillate oil to serve as hydrogen-donor solvent, and the light distillate oil is mixed with the rest medium distillate oil to obtain liquefaction product raw oil. The method can effectively convert coal tar and wash oil, obtains high-performance hydrogen-donor solvent and diesel products with high cetane number, and can avoid a phenomenon of speeding up deactivation of catalyst caused by overlarge reaction temperature rise in an independent hydrogenation process for the wash oil.

The invention relates to a coal and oil coprocessing method and device. The coprocessing method comprises steps as follows: step one, oil slurry pretreatment: heavy oil, a non-hydrogenated cycling solvent and a first catalyst are mixed, oil slurry is prepared and subjected to first hydrocracking reaction, a first product is obtained and separated, and first light distillate oil and first heavy distillate oil are obtained; step two, coal and oil coprocessing, solvent oil circulation and finished product separation. The coprocessing device comprises an oil slurry pretreatment device, a coal and oil coprocessing device body, a solvent oil circulating device and an oil product quality improving device. According to the coal and oil coprocessing method and device, selectivity for the heavy oil during coal and oil coprocessing is reduced, the percentage amount of pulverized coal in a coal and oil coprocessing process is increased, and the coal and oil coprocessing method and device are more suitable for practical application.

A method for preparing spinnable pitch from coal tar pitch comprises the following steps: crushing medium-low-temperature coal tar pitch to 20 meshes or below, performing extracting by using tetrahydrofuran, performing filtration to obtain a medium-low-temperature coal tar pitch soluble component, and recovering the tetrahydrofuran solvent from the soluble component to obtain refined pitch; and mixing the refined pitch with petrolatum, adding the obtained mixture into a reactor, introducing nitrogen under normal pressure, heating the reactor to 180-220 DEG C at a heating rate of 1-10 DEG C/min, switching to air, introducing the air into the reactor at a rate of 10-60 mL/min.g, heating the reactor to 280-350 DEG C at a heating rate of 1-10 DEG C/min, and allowing the obtained mixture to stay for 1-10 h to obtain the spinnable pitch. The method has the advantages of high yield, low price and moderate thermal polycondensation temperature.

The invention provides a method for improving the delayed coking technique. The method is as follows: coked raw material residual oil is heated by a heating furnace and enters into a coking tower; coke generated is accumulated in the coking tower; and gas, naphtha, light diesel oil, heavy diesel oil, light wax oil and heavy wax oil are obtained after separation of oil gas fluid products through a coking and fractionating tower. The light diesel oil, the heavy diesel oil, the light wax oil or the heavy wax oil are used as circulation materials through adjustment of the sources, the distillation range and the circulation of the circulation materials, and then the coking induction period of mixture can be prolonged and the coking dynamics of the coked raw material residual oil can be changed; and the coking reaction of the residual oil is delayed to be performed in the coking tower more completely, thereby achieving the aim of prolonging the operating period of a heating furnace tube. The operating period of the coking and heating furnace can be prolonged to be between 3 and 18 months generally according to the extended degree of the coking induction period determined by the sources, the distillation range and the circulation of the circulation materials selected.

The invention provides a direct coal liquefaction cycle solvent, a preparation method of the direct coal liquefaction cycle solvent and application of the direct coal liquefaction cycle solvent. The preparation method comprises the steps of S1, carrying out hydrogenation on a mixture of petroleum refining secondary products and direct coal liquefaction oil, and obtaining a hydrogenation product, S2, fractionating the hydrogenation product, and obtaining light distillate oil, medium distillate oil and heavy distillate oil, and S3, mixing the heavy distillate oil with a part of the medium distillate oil, and obtaining the direct coal liquefaction cycle solvent. In the preparation method of the direct coal liquefaction cycle solvent, on one hand, a large amount of arene is contained in the petroleum refining secondary products, the hydrogenation product is rich in components such as tetrahydronaphthalene, therefore, the hydrogen supplying capacity of the direct coal liquefaction cycle solvent can be obviously improved, and the yield of the direct coal liquefaction oil is improved; on the other hand, a part of high-added-value diesel distillate with the boiling range lower than 350 DEG C in the direct coal liquefaction cycle solvent is substituted with the petroleum refining secondary products, the diesel yield is improved, the economical efficiency of the coil liquefaction technology is remarkably improved, and the problem that an existing cycle solvent gets light can be solved.

The invention discloses a nutritional food with beautifying and whitening effects, belongs to the field of nutritional foods, and aims to provide a nutritional food which acts rapidly and has good effects. The nutritional food is made from the following raw materials: green tea, green apples, onions, Chinese wolfberry fruits, shii-take mushroom, mulberry fruits, safflowers and lily flowers. The nutritional food has the effects of enhancing immunity, nourishing the blood, promoting blood flow, removing blood stasis, reducing melanin in the skin and making the skin beautiful and white; and is advantageous in good effect and rapid onset of action.

The invention belongs to the technical field of green catalytic synthesis, and particularly relates to a preparation method of cyclic carbonate. Epoxide and carbon dioxide are catalyzed by using a catalyst provided by the invention to obtain the cyclic carbonate. According to the invention, the synthesis method is simple, cost is low, the catalyst has high activity and high selectivity, a reactioncondition is mild, and good reusability is realized.

The invention relates to the technical field of food processing, in particular to a Huangshan sesame seed cake and a preparation method thereof. The Huangshan sesame seed cake comprises, by mass, 250-350 parts of flour, 60-65 parts of ghee, 15-25 parts of green tea powder, 1-5 parts of maltose, 1-2 parts of dietary alkali, 80-90 parts of pig shop fat, 45-60 parts of preserved vegetables, 10-20 parts of white sugar, and 5-10 parts of chili powder. The Huangshan sesame seed cake is good in taste, healthy in eating and long in quality guarantee period.

The invention provides a recycling solvent and a preparation method thereof. The preparation method comprises carrying out first fractionation on directly liquefied whole-fraction oil of coal to obtain medium temperature oil and high temperature oil, wherein the medium temperature oil is distillate oil at a temperature of 200-320DEG C and the high temperature oil is distillate oil at the temperature of greater than 320DEG C, carrying out a first hydrogenation reaction process on the medium temperature oil to obtain first hydrogenated stable oil, carrying out a second hydrogenation reaction process on the first hydrogenated stable oil to obtain second hydrogenated stable oil, carrying out second fractionation on the mixture of the first hydrogenated stable oil and the second hydrogenated stable oil to obtain a medium temperature solvent and a high temperature solvent, wherein the medium temperature solvent is distillate oil at a temperature of 200-320DEG C and the high temperature solvent is distillate oil at a temperature of 320-500DEG C, and mixing a part of the medium temperature solvent and the high temperature solvent to obtain the recycling solvent. The preparation method of the recycling solvent has the advantages of low hydrogen consumption, low gas yield and high hydrogen supplying performances.

The invention provides a preparation method of high-matching coal-oil slurry. The preparation method comprises the following steps: carrying out coal washing, crushing and drying, and grinding the dried coal into coal powder; mixing the coal powder with heavy oil according to a certain ratio; and adding a catalyst, and carrying out stirring to prepare the coal-oil slurry. The coal meets the following requirements that the volatile content is larger than or equal to 37%, the hydrogen-carbon atom ratio is larger than or equal to 0.75, the inertinite content is less than or equal to 20%, and vitrinite reflectance is less than or equal to 0.65. The heavy oil meets the following requirements that the ash content is less than or equal to 1.0%, dynamic viscosity of the heavy oil at 100 DEG C is less than or equal to 1500 MPa, the hydrogen-carbon atomic ratio is 0.7-1.70, and the aromatic degree is greater than 0.20. The coal-oil slurry prepared by the method has high matching performance, andthe coal and heavy oil in the coal-oil slurry can be prevented from layering, so that the problem that coking is caused due to local overheating caused by the fact that the coal-oil slurry is deposited in a preheater or a reactor can be solved. Meanwhile, the synergistic effect between the coal and heavy oil can be fully exerted, the conversion rate and the oil yield of the coal and heavy oil areimproved, and therefore the method is more practical.

The invention relates to the technical field of preparation of benzaldehyde and benzyl alcohol, and discloses a method for preparing benzaldehyde and benzyl alcohol. The method comprises the followingsteps: a mixed solution containing benzoate and tetrahydronaphthalene is allowed to react under the presence of a bifunctional catalyst, and a reaction product is subjected to distillation separation, wherein the bifunctional catalyst comprises manganese oxide, zinc oxide, aluminum oxide, and iron oxide and/or molybdenum oxide; and based on a standard of the total weight of the manganese oxide, the zinc oxide and the aluminum oxide, the content of the manganese oxide in terms of MnO2, the zinc oxide in terms of ZnO, and the aluminum oxide in terms of Al2O3 is 15-56% by weight, 15-55% by weight, and 5-40% by weight respectively, and the sum of the content of the iron oxide in terms of Fe2O3 and the molybdenum oxide in terms of MoO2 is 1-10% by weight. The method can improve the conversionrate of the benzoate and the selectivity of benzaldehyde and benzyl alcohol, so as to produce benzaldehyde and benzyl alcohol with a high selectivity.

The invention provides a rice machining process. Selenium-rice rice is used as a raw material; and firstly, the selenium-rice rice is subjected to three-machine series rice milling to prepare husked rice, then the husked rice is subjected to two-machine series rice milling to obtain refined rice and an aleurone-embryo mixture, then the aleurone-embryo mixture is subjected to superfine grinding toprepare superfine powder with a particle size smaller than or equal to 10mum, the superfine powder is dispersed into basic aqueous solution to prepare pre-treating liquid, and finally, the refined rice is soaked in the pre-treating liquid to carry out vacuum freezing drying, so that films are formed on the surfaces of the refined rice to obtain the pre-treated refined rice, then the pre-treated refined rice is flushed by utilizing the basic aqueous solution, and natural air-drying is carried out. In the machining process of the rice machining process provided by the invention, after an aleurone layer and embryos, which are rich in nutrient substances, are prepared into the superfine powder, the superfine powder is recoated to the surfaces of the refined rice, and finally, the films are formed on the surfaces by utilizing the basic aqueous solution so as to effectively avoid loss and deterioration of the nutrient substances such as selenium, proteins and the like in the machining and storing process.

The invention discloses a formula of a biological preservative for chilled fresh beef. The formula comprises the following raw materials in parts by mass: 0.01 to 0.03 part of nisin, 0.006 to 0.03 part of epsilon-polylysine, 0.004 to 0.02 part of tea polyphenol, 0.006 to 0.03 part of natamycin and 20 parts of modified sodium alginate antibacterial liquid. A preparation method of the modified sodium alginate antibacterial liquid comprises the following steps: dissolving 0.4-1.6 parts by mass of multi-aldehyde sodium alginate in 20 parts by mass of pure water, adjusting the pH value to 6.0-6.5 by using a gluconic acid solution, then adding 0.02-0.1 part by mass of lysozyme and 0.04-0.2 part by mass of kojic acid, carrying out a stirring reaction at 32-40 DEG C for 0.5-2 h, then adding 0.01-0.05 part by mass of an artemisia apiacea extract, carrying out uniform stirring, and conducting cooling to 0-4 DEG C so as to obtain the modified sodium alginate antibacterial liquid. According to the invention, a tight biological membrane is formed on the surface of the beef by utilizing the cross-linking effect of the multi-aldehyde sodium alginate and beef protein molecules, bacteria invasion is prevented, meanwhile, juice loss of the chilled beef is prevented, and the immobilized lysozyme and the artemisia apiacea extract are utilized for slow-release sterilization, so that the shelf life of the chilled beef is effectively prolonged.