30results about How to "No carbon deposition" patented technology

The invention belongs to the technical field of preparation of ethyl benzene through catalytic dry gas, and discloses a preparation method of ethyl benzene by adopting alkylation exhaust gas generated in the process of preparing styrene by adopting catalytic dry gas. The method comprises the following steps: separating ethane, demethanizing, deethanizing, performing oxidative dehydrogenation, dehydrating and depickling, performing hydrocarbylation reaction, and separating ethyl benzene. A preferred adsorbent and the cyclic utilization technology of ethane and the adsorbent can minimize the preparation cost of ethyl benzene, the technology is simple and the recyclability is high. Under appropriate technological conditions, the total conversion rate of ethane can reach above 88%, the overall selectivity of ethylene generating ethyl benzene can reach above 80%, the purity of ethyl benzene can reach above 83%, and the recovery rate of the adsorbent can reach above 99%.

The invention discloses a catalyst for preparing a synthetic gas by partially oxidizing methane and a preparation method of the catalyst, and relates to nano catalysts for preparing synthetic gases. The catalyst for preparing the synthetic gas by partially oxidizing methane takes SiO2 as a carrier and CeO2 as an additive, and is prepared from the following components in percentage by mass: 0.005-1% of an active component Rh, 5-30% of an additive CeO2 and the balance of SiO2, wherein the particle size of Rh is 1-2nm and the specific surface area of Rh is 350-450m<2> / g. The preparation method comprises the following steps: 1) soaking the carrier in a nitric acid solution, washing till the pH value is 6.5-7.0 and drying for later use; 2) respectively preparing a rhodate solution and a cerate solution according to the content ratios of the components of the catalyst, and mixing the solutions into a mixed steeping liquid according to the ratios of the components of the catalyst; and 3) mixing SiO2 obtained in the step 1) with the steeping liquid obtained in the step 2), steeping, drying, and roasting, so as to obtain the catalyst for preparing the synthetic gas by partially oxidizing methane.

The invention discloses a non-pressure gasified liquid fuel combustor which comprises a liquid fuel gasifying cup, wherein the liquid fuel gasifying cup is provided with a liquid fuel gasifying chamber with an upper opening. A heat conductive tube extending upwards is arranged in the middle of the liquid fuel gasifying chamber. A fire cover located at the upper opening of the liquid fuel gasifying chamber is arranged between the heat conductive tube and the liquid fuel gasifying chamber. A gasified fuel outlet is arranged on the fire cover and / or between the fire cover and the liquid fuel gasifying chamber. A preheating groove is arranged on the outer wall of the liquid fuel gasifying chamber, and the bottom of the preheating groove is lower than or equal to the bottom face of the liquid fuel gasifying chamber. The liquid fuel gasifying chamber is provided with a liquid fuel inlet connected with a liquid fuel inlet tube and an overflow opening for communicating the liquid fuel gasifying chamber with the preheating groove. The invention further discloses a non-pressure gasified liquid fuel combustion cooker which can gasify and combust the liquid fuel in a non-pressurizing condition.

The invention relates to an electrochemical reforming system for dry reforming of methane and carbon dioxide and a construction method and a using method of the electrochemical reforming system for dry reforming of methane and carbon dioxide. The electrochemical reforming system for dry reforming of methane and carbon dioxide and the construction method and the using method of the electrochemical reforming system for dry reforming of methane and carbon dioxide aim at solving the problem that because of high-temperature condition limitation in an existing reforming reaction and carbon deposition, catalyst deactivation is caused. The system comprises a plurality of electrolytic tank thin pieces, a reactor and an external power source. The construction method includes the steps that firstly, an electrolyte thin film is prepared through a tape casting method; secondly, electrodes are prepared through a silk-screen printing method, and , and porous electrodes are obtained through a pore-forming agent and high-temperature calcination; thirdly, a confluence layer is prepared, and the electrolytic tank thin pieces are obtained after high-temperature sintering; and fourthly, the electrolytic tank thin pieces are placed in the reactor, and the power source is connected. The constructed system has the characteristics that the methane conversion efficiency is high, synthetic gas selectivity is high, and carbon deposition is avoided, and the preparation technology is simple, low in cost and easy and convenient to operate. The electrochemical reforming system for dry reforming of methane and carbon dioxide and the construction method and the using method of the electrochemical reforming system for dry reforming of methane and carbon dioxide belong to the electrochemical reforming field of dry reforming of methane and carbon dioxide.

The invention discloses an alcohol-based vehicle fuel, which belongs to the fuel field and is made of the following components in weight percent: 50-75% of methanol, 10-30% of ethanol, 4-10% of butanol, and 3-11% of additives , Corrosion inhibitor 2~7%, octane booster 5~10%. The alcohol-based vehicle fuel of the invention can replace traditional vehicle fuel, has higher octane number and combustion value, can quantitatively reduce tail gas emission, and is clean and environment-friendly.

The invention specifically relates to an alcohol-based liquid fuel with high calorific value and a preparation method thereof. The alcohol-based liquid fuel comprises the following raw materials by weight: 85 to 90 parts of methanol, 10 to 15 parts of C12 fuel oil, 5 to 10 parts of octanol, 15 to 20 parts of methylal, 1 to 4 parts of a deodorant and 10 to 15 parts of an additive. The additive comprises the following raw materials by weight: 5 to 10 parts of ethanol, 3 to 5 parts of glyceryl triacetate, 4 to 7 parts of a cationic fluorocarbon surfactant, 3 to 5 parts of ferrocene, 10 to 15 parts of a hydrocarbon compound, 10 to 15 parts of a combustion improver, 3 to 5 parts of a stabilizing agent and 3 to 5 parts of an antidetonant. According to the invention, the components of the alcohol-based liquid fuel with high calorific value cooperate with each other, so the alcohol-based liquid fuel is thorough in combustion, high in combustion heat value and free of carbon deposition, and hasgood intersolubility with gasoline, good corrosion resistance, good vaporability and good positive additivity.

The invention relates to air compressor oil, comprising a phenolic antioxidant, a phenylamino antioxidant, an olefine acid antioxidant, a metal deactivator, an ash-free antiwear agent, a defoamer, a light-sensitive agent, a hydrogenation paraffin base oil fraction, a hydrogenation naphthenic base oil and a hydrogenated alkyl high boiling substance. The invention also provides a preparation method of the air compressor oil. The air compressor oil disclosed by the invention has excellent high-temperature carbon deposit resistance, excellent high-temperature oxidation resistance, and excellent abrasion resistance, and simultaneously has excellent lubricating property, anti-foaming property and demulsibility on the product, the cost performance of the product is improved, the performances of the synthetic air compressor oil and composite synthetic air compressor oil are achieved, and the long-term work requirements of single-screw and dual-screw air compressors are completely met.