196results about How to "Avoid carbon deposits" patented technology

The invention relates to catalysts, in particular to a catalyst for preparing arene from synthesis gas through one-step conversion and a preparation method of the catalyst. The catalyst is prepared from, by mass, 30%-70% of zirconium-containing perovskite, 30%-60% of multistage porous zeolite molecular sieve and 0.1%-10% of oxide additive. The preparation method comprises the steps that 1, a salt compound of at least one of IA, IIA, VB, VIB, VIIB, IIB and IVA family elements and rare earth elements is weighed according to the components of the catalyst and added into water or alcohol to be prepared into a solution A; the multistage porous zeolite molecular sieve is weighed and added into the solution A, suction filtration, washing and filter cake drying are carried out to obtain solid powder, then the solid power and the zirconium-containing perovskite are mixed, ground and calcined, hydrogen or mixed gas of hydrogen and inert gases is introduced, heating is carried out for reduction, the reduced solid sample is tablet molded, and the catalyst is prepared.

The invention relates to the preparation method of a small crystal ZSM-5/mordenite composite molecular sieve, mainly solving the problems in the existing preparation process of ZSM-5/mordenite composite molecular sieve of bigger crystal of the composite molecular sieve, low catalytic activity and fast activity loss in the reaction in which ethene and propylene are prepared by the catalyzing and cracking of naphtha. The invention well resolves the problems by adopting the technical proposal that the ZSM-5 with decent silica alumina ratio and the crystal seed of mordenite is added in the synthetic process of the molecular sieve and the PH value of the molecular sieve raw material solution system is adjusted to 9-14 in the preparation process. The ZSM-5/mordenite composite molecular sieve prepared by the method can be applied in the industrial production, in which ethene and propylene are prepared by the catalyzing and cracking of naphtha.

The invention discloses a method for activating and regenerating waste industrial activated aluminum oxide. The method comprises pretreatment, cleaning liquid impregnation treatment and regeneration treatment; adopted cleaning liquid is selected from at least one of acid liquor and alkali liquor and surfactant solution; the regeneration treatment comprises regenerated liquid impregnation and calcination treatment, and adopted regenerated liquid is selected from aluminum-contained solution; the calcination treatment is performed under air atmosphere, and air inlet amount is 300 to 800 m<3>/(h.t). According to the method for activating and regenerating the waste industrial activated aluminum oxide provided by the invention, an original pore structure channel is dredged through a physical and chemical method, and a new pore structure is regenerated on the basis of the existing pore structure to obtain activated aluminum oxide with high specific surface area and high pore volume.

The invention discloses a mesoporous carbon-supported composite metal oxide catalyst and a preparation method thereof. Compared with the prior art, the mesoporous carbon-supported composite metal oxide catalyst has a high specific surface area and a large aperture size, is conducive to rapid diffusion of reactants and products in an aperture channel, avoids deep oxidation, coking and carbon deposition, and has good catalyst activity and a long catalyst life.

The invention provides a plasma catalysis ignition integrated nozzle which is a plasma assisted atomization and plasma ignition integrated nozzle formed by a low-temperature plasma discharge assembly, a fuel pressure atomization nozzle assembly and a high-energy plasma ignition assembly. A barrier medium uniformly discharges to ensure that a liquid fuel partially pyrolyzes to generate a large quantity of gas activated components, so that a gas-liquid coexisting plasma microcell is formed, fuel activation energy and ignition energy are reduced, physical conditions of gas assisted atomization are formed, and atomization effect is improved. A plasma ignitor is arranged on the middle of a multi-point nozzle and is positioned in a combustion chamber low-pressure region, plasma and fuel atomized particles are well mixed to generate a chemical reaction, and a stable high-temperature ignition core is easily formed. Ignition is directly carried out by adopting a plasma jet, and because the plasma jet has special discharge characteristics and larger discharge energy and is highly concentrated in energy, the ignition reliability and the ignition concentration limit of a gas turbine are greatly improved. The plasma catalysis ignition integrated nozzle can be applied to a combustion chamber of the gas turbine.

Enhanced high temperature fuel cell systems, such as solid oxide fuel cell systems and molten carbonate fuel cell systems are disclosed. Embodiments of the disclosure include solid oxide and molten carbonate fuel cell systems incorporating gas separation apparati facilitating the recycle of hydrogen fuel from fuel cell anode exhaust for supply to the fuel cell anode inlet. Further embodiments of the disclosure include solid oxide and molten carbonate fuel cell systems incorporating inventive combinations of anode materials conducive to combination with enriched hydrogen fuel. Other embodiments of the disclosure include gas separation apparatus for providing enriched oxygen feed to the cathode inlet of solid oxide and molten carbonate fuel cells.

The invention discloses a circumferential heating type baking needle used for an electronic cigarette and the electronic cigarette. The circumferential heating type baking needle used for the electronic cigarette comprises a baking needle head internally provided with an heating element, the exterior of the baking needle head is plated with a non-stick coating, the non-stick coating is a teflon non-stick coating or a teflon non-stick nano coating, a fixed support and a ceramic base are arranged on the baking needle head, the ceramic base is fixed in the fixed support, and the braking needle head is fixedly inserted into the ceramic base; the circumferential heating type baking needle used for the electronic cigarette is arranged in the electronic cigarette. The circumferential heating type baking needle used for the electronic cigarette and the electronic cigarette have the advantages that baking heating is uniform, installation is easy and rapid, the cigarette flavor is more mellow, tar and nicotine in the cigarette are reduced, health and hygiene are achieved, carbon deposition does not exit in use, and energy conservation and environmental protection are achieved.

The invention discloses an engine EGR (Exhaust Gas Recirculation) system, comprising an EGR cooler, an EGR valve, a by-pass line and a temperature sensor, wherein the EGR valve is communicated with the gas outlet end of the EGR cooler; the by-pass line is connected with the EGR cooler in parallel; an exhaust gas flow control proportional valve which is connected with an ECU (Engine Control Unit) in a controlling way is mounted at the inlet of the by-pass line; the temperature sensor is arranged between the outlet of the by-pass line and the EGR valve and is taken as an input end used for collecting the valve inlet exhaust gas temperature of the EGR valve by the ECU. The engine EGR system is simple in structure; the by-pass line which is connected with the EGR cooler in parallel and is provided with the proportional valve is adopted; the temperature of the valve inlet exhaust gas entering the EGR valve is adjusted by adjusting the opening proportion of the proportional valve; the EGR valve inlet exhaust gas temperature is controllable under all operating working conditions of an engine; the EGR system is free of carbon deposition and gum deposit; therefore the temperature of the mixed gas entering an engine cylinder can be well controlled; the optimal states of engine performance and discharge are realized; the cooling efficiency of the EGR cooler is monitored in real time, so that the reliability of a product is ensured.

The invention relates to a close-range collision type double-fuel engine nozzle component and belongs to the technical field of engine nozzles. The close-range collision type double-fuel engine nozzle component comprises a needle valve, a sleeve valve, a nozzle body, a collision sleeve, a needle valve electromagnet, a first fuel channel electromagnet, a first ball valve, a second fuel channel electromagnet, a second ball valve and a spring, wherein the needle valve is located in the sleeve valve, and the sleeve valve is provided with a fuel outlet; the nozzle body is provided with a first mounting groove, a first fuel channel and a second fuel channel, the conical face of the first mounting groove is in tight contact with the conical face on the outer surface of the sleeve valve, the first ball valve is arranged at the inlet of the first fuel channel, and the second ball valve is arranged at the inlet of the second fuel channel; the nozzle body is provided with a conical face, the conical face of the nozzle body is provided with a spray hole, and the spray hole is communicated with the first mounting groove; the collision sleeve is provided with a second mounting groove, the nozzle body is mounted in the second mounting groove, and the collision sleeve is provided with a collision platform. The close-range collision type double-fuel engine nozzle component can improve a collision spray effect, avoid the generation of a wall-face oil film and accumulated carbon, and lower soot discharge quantity.

The invention discloses a preparation method of a catalyst for preparing dimethyl ether by methanol. The method comprises the following steps: firstly, dissolving a template agent in strong alkaline solution, and adding microporous molecular sieves to be dipped so as to obtain mixed liquor, secondly, performing primary crystallization and cooling on the mixed liquor, adjusting the pH of the mixed liquor to be 6 to 11, performing secondary crystallization on the mixed liquor, and then filtering, washing and drying the mixed liquor so as to obtain dried solid powder, and thirdly, performing ammonium ion exchange, washing and drying on the solid powder in ammonium salt solution, and calcining to remove the template agent and NH3 so as to obtain the catalyst. The catalyst for preparing dimethyl ether by methanol disclosed by the invention is based on cellular material, adopts strong base to dissolve material to partly destroy microcellular structures, then performs hydrothermal reconstruction in the condition that quaternary ammonium salt template agent exists, so as to form mesoporous structure and obtain the hierarchical pore structure catalyst containing millipore and mesopore. According to the catalyst, the microcellular structures are kept, the activity decline of the catalyst is prevented, hollow structures are formed, products can be separated from the surface layer of the catalyst conveniently, and carbon distribution is prevented. According to the preparation method, the stability, the activity and the selectivity of the catalyst are improved.

The invention discloses a long-life air compressor oil composition. The long-life air compressor oil composition comprises the following components in percentage by weight: 0.6-1.5% of an ashless composite additive, 0.3%-1.0% of an antioxidant, 0.1%-0.5% of an extreme pressure anti-wear agent, and 0.002% to 0.005% of an anti-foaming agent, with the balance being base oil, wherein the base oil comprises a mixture of III-type hydrogenated base oil and alkyl naphthalene base oil or polyether base oil. The air compressor oil provided by the invention has excellent high-temperature detergency and oxidation resistance, and can effectively avoid the generation of oil sludge and carbon deposit; excellent wear resistance and hydrolytic stability are achieved, and excellent wear resistance protection is provided for the air compressor; the excellent heat conduction efficiency can help to reduce the temperature and oil temperature of the compressor; and the oil change period is long and can reach6000 hours or above. In addition, compared with known long-life air compressor oil, the air compressor oil has the advantages of being low in cost, simple in preparation method, easy to popularize and apply on a large scale and the like.

This invention relates to gas carburizing the toothed-wheel of heavy duty automobile. It is characterized that this invention utilizes carbon-potential pulsation type gas carburizing, so it overcomes the prior art short comings that carbonization is proceeded under high carbon-potential and diffusion is finished under low carbon-potential. After quenching, the working-pieces have excellent carburized layer concentration gradient distribution, hardness gradient distribution and carburized layer histogram. This inventive method makes parts thus carburized have long service life under complex condition, after the parts are carburized and have gentle hardness gradient.

The invention provides a method and device for preparing a carbon nano tube by taking high-sulfur heavy oil as a raw material, and belongs to the technical field of petrochemical industry and carbon materials.The invention provides a method for preparing the carbon nano tube by taking the heavy oil of which the mass fraction of sulfur ranges from 2.11% to 4.9% as a carbon source and taking a 304 stainless steel substrate of which the surface is loaded with nickel and magnesium oxide as a catalyst through a chemical vapor deposition method, and provides the device needed in preparing the carbon nano tube by taking the high-sulfur heavy oil as the carbon source simultaneously.The method and device for preparing the carbon nano tube by taking the high-sulfur heavy oil as the carbon source have the advantages that the prepared catalyst is suitable for directly preparing the carbon nano tube by taking the high-sulfur heavy oil as the raw material, the diameter of the prepared carbon nano tube ranges from 30 nm to 90 nm, the tube cavity is large, the tube wall is smooth, and the purity and the degree of graphitization are high; the method has the advantages that the raw materials are low in price and rich in source, the problem that high sulfur content in the carbon source makes the catalyst inactivated is solved, and a new way is provided for high value added utilization of the heavy oil.

The invention discloses a swirl atomizing structure of a single-hole atomizing oil sprayer and further discloses the single-hole atomizing oil sprayer. The swirl atomizing structure comprises a pipe body, a valve seat, a swirl piece and a metering piece, a first mounting groove is formed in the top end of the valve seat, a second mounting groove is formed in the bottom end of the valve seat, and the first mounting groove and the second mounting groove communicate with each other through a valve hole. The swirl piece is tightly attached to the bottom face of the second mounting groove, and themetering piece is tightly attached to the bottom face of the swirl piece. A swirl hole is formed in the swirl piece, and a metering hole is formed in the metering piece. A plurality of swirl grooves are formed in the swirl piece. After a fluid passes through the valve hole, under the effect of the swirl grooves, a fluid beam is impacted to form a turbulent flow or a swirl flow distributed in the swirl groove direction, then when the fluid passes through the metering hole, the atomizing effect is obviously improved, the fluid is more thoroughly atomized, the particle size of atomized particlesis more fine, the fuel oil atomizing effect is improved, mixing and sufficient combustion of fuel oil and air are facilitated, carbon is prevented from being accumulated in a cylinder, and the vehicleemission cleanness is improved. The single-hole atomizing oil sprayer has the beneficial effects.

The invention relates to an exhaust emission connector of an automobile engine. The exhaust emission connector of the automobile engine comprises an elbow and a carbon removing and sound absorbing device, wherein the elbow is provided with a gas inlet and a gas outlet, at least one cooling fin is arranged on the outer wall of the elbow, the carbon removing and sound absorbing device communicates with the gas outlet, and a sealing washer is arranged between the carbon removing and sound absorbing device and the gas outlet; the carbon removing and sound absorbing device comprises a carbon removing and sound absorbing part and a threaded connection part, and the threaded connection part is arranged far away from the gas outlet; and the inner wall of the carbon removing and sound absorbing part is covered with a sound absorbing layer, the surface of the sound absorbing layer is covered with a heat-resisting layer, and a carbon removing box and a corona discharger are arranged on the inner wall of the carbon removing and sound absorbing device. According to the exhaust emission connector of the automobile engine, because the carbon removing box and the corona discharger are arranged on the inner wall of the carbon removing and sound absorbing device, static electricity in gas is effectively removed through the corona discharger, the carbon removing effect is improved, carbon deposition in the connector is effectively prevented, the quality of the connector is improved, and the service life of the connector is prolonged.

The invention relates to a method for preparing aromatic hydrocarbons by methane-plasma-activated oxygen-free aromatization. The method comprises a multistage-series plasma activation reactor, an aromatization reactor, a palladium hydrogen permeation membrane separator, a condensation cooler, a heat recovery device and a gas-liquid separator. Unconverted methane in the reaction system is recycled; hydrogen permeated by the palladium hydrogen permeation membrane separator is recovered through a hydrogen vacuum pump; the unpermeated ethane, acetylene, propane, butane and aromatic hydrocarbons pass through the condenser and gas-liquid separator to recover the liquid aromatic hydrocarbons; and uncondensed ethane, acetylene, propane, butane and methane are merged and return to the reaction system. The method can recover the coproduct hydrogen; the plasma is adopted to activate and induce the reaction, thereby enhancing the methane conversion rate and promoting the generation of small-molecular paraffin hydrocarbons in the reaction system; and the paraffin hydrocarbons can be recycled as a methane reaction aid and a free radical chain initiator, thereby greatly enhancing the methane aromatization selectivity and yield, reducing the carbon deposit and lowering the production cost of aromatic hydrocarbons.

The invention relates to a regeneration method for removing an oxygen compound containing adsorbent in low-carbon olefins, and mainly solves the problems that the operation is complicated; the regeneration efficiency is low; the adsorbent can be easily coked and generate carbon deposition, so that the adsorption performance of the adsorbent is reduced or even inactivated, and the like. The regeneration method has the technical scheme that stepped programmed temperature rising is performed at lower pressure and a temperature higher than the adsorption temperature; the adsorbent requiring regeneration contacts positive or reverse flowing high-temperature drying gas with heat. The problems are well solved; the regeneration method can be used for removing the oxygen compound containing adsorbent in industrial low-carbon olefins.

The invention discloses a method for detecting the content of elements in oil with an inductively coupled plasma (ICP) spectrometer. The ICP spectrometer comprises a torque tube, and the torque tube is formed by three layers of concentric quartz tubes. Cooling gas is guided into the quartz tube of the outer layer, oxygen is guided into the quartz tube of the middle layer and gasoloid of the oil which is diluted by organic solution is injected into the quartz tube of the outer layer. The method for detecting the content of elements in oil with the ICP spectrometer makes up the deficiency of the prior art.

The invention belongs to the field of biomass energy utilization, and discloses a bio-oil electrochemical upgrading method which comprises the following steps: (a) mixing bio-oil, an organic solvent and a supporting electrolyte to obtain a catholyte; (b) preparing an acid solution as an anolyte; (c) constructing an electrochemical reactor by adopting the catholyte and the anolyte and separating the catholyte from the anolyte through one or two ion exchange membranes, thus forming a current loop; and (d) introducing a protective gas into one side of the catholyte, and introducing current through the working electrode and the anode electrode to carry out electrochemical reaction, thereby realizing the electrochemical upgrading of the bio-oil. Compared with the prior art, the problem that carbon deposition is easily formed when the bio-oil is upgraded by a thermochemical method can be effectively solved, the bio-oil is subjected to electrochemical upgrading under mild conditions, and thecontent of bio-oleic acid, the content of aromatic components and the content of heavy components can be reduced by upgrading, so that the bio-oil is suitable for transportation and storage; and meanwhile, carbon deposition is avoided in the upgrading process.

The invention discloses composite fuel oil and a preparation method thereof. The composite fuel oil comprises components in parts by mass as follows: 5-15 parts of heavy oil, 10-40 parts of coal oil, 10-20 parts of coking light oil, 20-40 parts of vegetable oil, 5-10 parts of microbial oil, 3-6 parts of vegetable oleic acid or ethanolamine, 10-25 parts of methanol, 10-40 parts of distilled oil and 1-5 parts of additives, wherein the distilled oil is obtained from waste oil and/or diesel oil and/or illegal cooking oil through distillation, and the additives comprise a combustion improver, a dispersing agent and an anticorrosive agent. The composite fuel oil has the advantages of high heat value, stable performance and clean emission, is not prone to volatilization and is free of toxicity, smoke and odor, the requirement for ignition temperature in a use process can be met sufficiently, waste oil can be treated reasonably, and existing energy is saved.

Turbocharger bearing body assembly, the bearing body is equipped with oil inlet hole, main oil hole, oil guide hole at the compressor end, oil guide hole at the turbine end, floating bearing hole at the compressor end, floating bearing hole at the turbine end, main oil chamber and oil outlet. An independent cooling oil chamber is arranged at the turbine end of the bearing body, and the cooling oil chamber runs through the upper and lower structures of the turbine end of the bearing body. An oil injection hole is arranged at the turbine end of the main oil hole, and the oil injection hole communicates with an independent cooling oil chamber. A lubricating oil pressure relief hole is provided at the bottom of the independent cooling oil chamber close to the oil outlet, and the pressure relief hole communicates with the main oil chamber, so that the lubricating oil in the cooling oil chamber can be discharged to the main oil chamber in time.

The invention discloses a core-shell structure catalyst for efficient and synergistic removal of NOx and toluene and a preparation method thereof. The catalyst comprises the following components by mass percentage: 0.5%-4% of Cu, 20-30% of CeO2 and the balance carrier Beta molecular sieve. The preparation method includes: taking Cu/Beta as the core, coating the Cu/Beta core layer with CeO2, and conducting drying and calcining to obtain the Cu/Beta@CeO2 core-shell catalyst. According to the invention, Cu/Beta with strong toluene adsorption and desorption capabilities is adopted as the core, andat the same time Cu can reduce the ignition temperature of the catalyst; and secondly, the strong oxygen storage capacity of the CeO2 shell can prevent carbon deposit on the catalyst surface, thus protecting the active components of the core layer and forming a special interfacial effect with the core layer, and further improving the catalytic activity of the catalyst for toluene at low temperature.

The invention relates to a novel high-catalytic-activity anode material of a solid oxide fuel cell (SOFC) and a preparation method of the anode material. The anode material is characterized in that the chemical formula is Co2TiO4, and the anode material can be decomposed to be a Co phase and a TiO2 phase which have specific microstructures, wherein the Co phase is used for providing an electronic transmission channel and supplying catalytic activity to the splitting decomposition and oxidation reactions of a hydrocarbon fuel; the TiO2 phase can be used for avoiding the formation of carbon deposition, simultaneously providing an ion transmission channel and increasing the oxidation rate of fuel gas. The invention simultaneously provides a preparation method of a novel anti-carbon-deposition anode material. The anode material has the advantages of high electrical conductivity, high catalytic activity to the hydrocarbon fuel, carbon deposition resistance, simple preparation process, environmental friendliness and the like.