64 results about "Hydrogen+Methane" patented technology

The invention belongs to the field of oil gas geochemistry, and in particular to a device and method capable of separating hydrogen and methane in a mixed gas and measuring a hydrogen isotope. The device comprises a gas sample inlet, a drying unit, a hydrogen adsorption separation unit, a quantifying loop, a vacuum unit and an isotope measuring unit; and the gas sample inlet, the drying unit, thehydrogen adsorption separation unit, the quantifying loop and the isotope measuring unit are sequentially connected in series; the hydrogen adsorption separation unit can release adsorbed hydrogen tomeasure the hydrogen isotope, so that the methane and hydrogen in the mixed gas are separated, the separated hydrogen and methane are used for measure of the hydrogen isotopes respectively, and measure of the hydrogen isotope of the hydrogen and the hydrogen isotope of the methane in the hydrogen-methane mixed gas is realized; and the vacuum degree of the whole system is high, deviation caused bymutual interference between a hydrogen peak and a methane peak in the prior art is overcome, and accuracy of an analytical test is improved.

The invention discloses a method for preparing Al2O3 composite powder with uniformly dispersed carbon nanotubes by an in-situ synthesis process, which comprises the following steps: proportionally preparing aluminum nitrate, nickelous nitrate and citric acid into a solution, and heating and calcining the obtained solution to initiate the combustion reaction, thereby obtaining the NiAlxO3x+1 solid solution catalyst precursor powder; and putting the obtained solid solution in a pipe furnace, introducing a gas mixture containing methane, hydrogen and nitrogen, heating to reaction temperature, reacting for some time, and cooling to obtain the Al2O3 composite powder with uniformly dispersed carbon nanotubes. The content of the catalyst nickel is controlled to control the content of the carbon nanotubes; and meanwhile, the invention solves the problem that the carbon nanotubes can not be easily dispersed in the ceramic matrix, so that the nanotubes are uniformly dispersed in the product.

The invention discloses a method of using alkaline earth metal hydrides to reduce carbon dioxide to prepare a hydrogen-methane mixed fuel. According to the method, in an argon atmosphere, alkaline earth metal hydrides are placed in a ball mill tank, argon is extracted from the ball mill tank, highly pure CO2 gas is filled into the ball mill tank, and a ball milling machine is adopted to carry out ball milling reactions at a room temperature to obtain the hydrogen-methane mixed fuel. The method can prepare hydrogen-methane mixed gas at a room temperature, a novel method is provided for high density storage and preparation of methane, and a novel technology, which can carry out carbon dioxide methanation under mild conditions, is also provided.

The invention discloses a heat exchange system of a demethanizer and a heat exchange method. The heat exchange system adopts one of the following manners: A, a branch separated from an outlet pipeline at the bottom of a 1# hydrogen-methane separation tank is connected with the demethanizer or a demethanizer return tank; B, an aftercooler is arranged at the top of the demethanizer return tank, and a branch separated from the outlet pipeline at the bottom of the 1# hydrogen-methane separation tank is connected with the aftercooler and then connected with the demethanizer return tank; C, a gas-liquid separation tank is arranged behind a cooling box, a gas phase outlet of the demethanizer return tank is connected with the cooling box and then connected with the gas-liquid separation tank, and the bottom of the gas-liquid separation tank is connected with the demethanizer return tank. Under the condition that the coolant level and compressor outlet pressure are unchanged, the gas phase at the top of the demethanizer return tank is cooled by use of local rich cold energy through reasonable optimization of matching of self cold energy of deep cooling, the heat transfer temperature difference of a condenser of the demethanizer is increased, and the loss of ethylene is reduced.

The invention discloses a degassing system on the ship or the other device, comprising a plurality of adjacent oil tanks connected by the bottom pipeline system. After emptying the oil, the oil tank is filled with gas such as carburetted hydrogen gas. The oil tank comprises at least one air intake for receiving and guiding the gas with specific gravity less than the existing gas in the oil tank such as inert gas and/or air; and an exhaust port for outputting the mixture of the existing gas and the supplied gas. A plurality of oil tanks mounted before the pendulous pipeline in the oil tank array or adjacent to the oil tank array ventilate the mixture of the existing gas and the supplied gas from the bottom of the oil tank by a vertical vent pipe, wherein the vertical vent pipe extends from the bottom of the adjacent oil tank and extends outside the oil tank. A plurality of oil tanks mounted behind the pendulous pipeline in the oil tank array ventilate the mixture of the existing gas and the supplied gas from the bottom of the oil tank by a bottom pipeline system and comes out from the pendulous pipeline.

A method of reducing carbonyl sulfide (COS) in a gas stream is described. The method includes contacting a gas stream with an iron oxide-based material. The present invention relates to a process for the removal of COS from any type of gas stream, especially a gas stream comprising one or more of ethane, methane, hydrogen, carbon dioxide, hydrogen cyanide, ammonia, hydrogen sulfide and inert gases. They include natural gas, and especially synthesis gas. Syngas can be used in the Fischer-Tropsch process. The present invention provides a simple and effective method of reducing COS, especially with materials that can be easily placed in existing shelter beds, thus avoiding any rebuilding time and costs. The iron oxide-based material can also be used for other impurities, providing a single bed solution.

The invention relates to a small-sized hydrogen methane fuel gas generation device for residents in villages and towns, wherein a garbage crushing and conveying device is connected with a feed port of a hydrogen methane generator through a packing auger; the crushed garbage is subjected to anaerobic fermentation in the hydrogen methane generator; a one-way openable valve of an anaerobic methane generation chamber is arranged between an anaerobic hydrogen generation chamber and the anaerobic methane generation chamber; the gas outlet end of a nanoceramic coating rolling shaft which runs through the center of the hydrogen methane generator is connected with a hydrogen purifier and a methane purifier respectively; purified hydrogen and purified methane are controlled by a gas mixing valve to be mixed and then are conveyed to a hydrogen storage tank; the hydrogen methane generator is arranged on a pedestal; a gravity lifting device is arranged between the pedestal and the hydrogen methane generator; a 360-degree rotatable universal wheel is arranged at the lower part of the pedestal; and brackets are arranged on two sides of the pedestal and are respectively used for fixing the packing auger, the hydrogen purifier and the methane purifier. The invention further provides a method for preparing hydrogen methane fuel gas by using the hydrogen methane generation device.

The invention discloses a self-adaptive control method of a power generation internal combustion engine applied to various gas sources. The self-adaptive control method comprises the following steps: detecting the concentrations of methane, hydrogen and carbon dioxide and gas mass flow in gas sources through a methane concentration sensor, a hydrogen concentration sensor, a carbon dioxide concentration sensor and a gas mass flow meter, and inputting the concentrations of methane, hydrogen and carbon dioxide and the gas mass flow into an ECU; matching an air-fuel ratio through ECU according to a self-adaptive air-fuel ratio MAP obtained by an embedded algorithm, and controlling ignition time according to the rotating speed and the equivalent torque of the total heat value of the incoming flow gas through ECU; and controlling a gas inlet system, a gas supply and injection system, an ignition system and a turbocharging system based on pure gas mass flow in the incoming flow gas, the carbon dioxide concentration and the air-fuel ratio and achieving self-adaptive combustion of the engine. An oxygen sensor feeds back and corrects the air-fuel ratio; a knock sensor feeds back and corrects ignition time; and a temperature sensor and a nitrogen oxide concentration sensor control urea injection of a post-treatment system. According to the self-adaptive control method of the power generation internal combustion engine applied to various gas sources, the efficient and stable combustion power generation process of enabling the engine to be adapted to different gas sources can be realized; and ultra-low emission is only generated.

The invention discloses a treatment method for by-products of methyl formate and methylal in production of dimethyl carbonate by a carbonylation method, and relates to the field of chemical processes.The process flow comprises the following steps: materials of mixture of methanol, methyl formate, methylal, dimethyl carbonate and the like are pressurized by a pump and then mixed with high-pressurehydrogen of the materials to form materials, the materials are heated to the reaction temperature by a preheater, and the heated materials are sent into a reactor; a cooled material is fed into a low-pressure flash tank; and non-condensable gas methane, hydrogen and other materials are discharged from the tank top of the low-pressure flash tank, the materials obtained from the tank kettle of thelow-pressure flash tank are high-concentration methanol, the materials pressurized by the pump can be fed into a dimethyl carbonate reaction process to be recycled, and part of the materials can be subjected to cyclic hydrogenation. According to the invention, a mixture of methanol, methyl formate, methylal and dimethyl carbonate does not need to be gasified, and the reaction can be carried out under the working condition of a trickle bed, so that the consumption of steam and circulating water is reduced, the hydro-conversion efficiency of methyl formate and methylal is improved, and the hydro-conversion of dimethyl carbonate is avoided.

Provided are a process and device for producing methane-rich coal gas by moving bed pressurized coal gasification, and the height-to-diameter ratio of a coal gasification bed layer in a moving bed pressurized gasification furnace is improved to optimize gasification conditions for optimizing the methane production rate. On an oxygen-rich steam charging pipeline at the bottom of the gasification furnace, a hydrogen gasification agent adding pipeline is additionally arranged, an oxygen-rich steam gasification agent and a hydrogen gasification agent are respectively sent into the pressurized gasification furnace from the furnace bottom in turn, and a technological process for preparation of low-methane water coal gas through oxygen-rich steam and a technological process for preparation of high-methane hydrogen coal gas through hydrogen are cyclically repeatively performed on a furnace internal carbon layer. Before the two charging gasification agents are transformed with each other, an inert gas displacement process is designed, so as to prevent the two gasification agents from meeting with each other in the charging pipeline and the furnace bottom interior to prevent safety accident. Because the technological process for preparation of the high-methane hydrogen coal gas through hydrogen is increased in the moving bed pressurized coal gasification technology, the methane content in coal gas is substantially increased, not only can the coal gas heat value be improved but also the coal-to-gas thermal efficiency is improved.

The invention discloses a gas-power interconnection system based on a reversible fuel cell under a compound gas condition. The gas-power interconnection system comprises a reversible fuel cell and a natural gas conveying pipeline connected with the reversible fuel cell through a hydrogen-methane-carbon monoxide conveying pipeline; the reversible fuel cell is communicated with a hydrogen filling station and a hydrogen storage tank through hydrogen conveying pipelines; a pressure reduction station is arranged at the upstream of the hydrogen-methane-carbon monoxide conveying pipeline connected with the natural gas conveying pipeline; the gas-power interconnection system also comprises a power grid which is jointly communicated with the reversible fuel cell and the natural gas conveying pipeline; a reconstructed compound gas pipeline and users at the downstream form a natural gas distribution network with injection of hydrogen, methane and carbon monoxide. According to the gas-power interconnection system, under the condition of not changing the existing technical conditions, the hydrogen injection ratio is not greater than 17%; meanwhile, a compound gas composed of hydrogen, methane and carbon monoxide is injected into a natural pipe network so as to obtain an injection ratio being higher than that of injection of pure hydrogen, so that the overall injection amount of the fuel isincreased, and the overall power-gas conversion power of the system is improved.

The invention discloses a full-temperature-range simulated rotating moving bed pressure swing adsorption process for separating and extracting H2/CO from synthesis gas, which is based on pressure swing adsorption and comprises a multi-tower middle temperature pressure swing adsorption concentration system, a multi-tower middle temperature intermediate gas pressure swing adsorption system, a methane hydrogen hydrogen extraction pressure swing adsorption system and a concentrated gas temperature swing adsorption system, a full-temperature-range simulated rotating moving bed pressure swing adsorption FTrSRMPSA system for deacidifying synthesis gas and separating and extracting H2 and CO product gas with high purity and high yield is formed, so that cyclic operation of multiple steps of adsorption and desorption in simulated rotating moving bed pressure swing adsorption and temperature swing adsorption on the basis of axial flow fixed bed pressure swing adsorption is realized; the device is suitable for fluctuation working conditions of flow, component concentration, pressure or temperature corresponding to synthesis gas while realizing'high yield and purity 'and avoiding deep adsorption, and overcomes the defects of fixed bed, circulating bed, fluidized bed, rotating wheel adsorption and simulated moving bed processes in the prior art.

The invention relates to the technical field of medicines and discloses a method for preparing darunavir. The method comprises the following step: preparing 20-30 parts of cobalt, 10-20 parts of triethylamine, 10-20 parts of ferrous oxide, 10-20 parts of zinc oxide, 3-5 parts of 1.2 equivalent of marina hydrogen methane, 20-30 parts of zinc, 50-80 parts of a ferric nitrite solution, 30-40 parts ofa metal base, 40-50 parts of alumina, 10-20 parts of silica, 3-5 parts of p-acetamide benzoyl sulfonyl chloride, 3-5 parts of a precipitant, 50-80 parts of an ethanol solution and 20-30 parts of nickel for later use. According the method for preparing the darunavir, 20-30 parts of cobalt, 10-20 parts of triethylamine, 10-20 parts of ferrous oxide, 10-20 parts of zinc oxide, 3-5 parts of 1.2 equivalent of marina hydrogen methane, 10-20 parts of silica, 3-5 parts of p-acetamide benzoyl sulfonyl chloride, 3-5 parts of the precipitant, 50-80 parts of the ethanol solution and 20-30 parts of nickelare adopted for later use, the reaction materials used in the method are low in price and low in reaction environment requirement, correspondingly, the preparation cost of the darunavir is greatly reduced, patients can afford the darunavir, and the darunavir can truly benefit the patients.

The invention discloses a method for comprehensively recovering various valuable metals in copper slag floating copper tailings, and belongs to the technical field of metal element recovery. The method comprises the steps of direct reduction roasting, magnetic separation and reverse flotation. According to the method for comprehensively recovering the various valuable metals in the copper slag floating copper tailings provided by the invention, the mixed gas of methane, hydrogen and argon is introduced for direct reduction roasting, magnetite in the copper slag can be completely converted into metal iron, and a composite additive is matched for dissociating fayalite in the copper slag, so that the purpose of resourceful ore phase reconstruction is achieved; and a phase composition in the copper slag is improved, an iron phase in the slag is subjected to a decomposition reaction, and lead and zinc are gasified in the form of metal steam, so that the various valuable metals in the copper slag are comprehensively recycled. Meanwhile, roasting products are treated through magnetic separation and reverse flotation, so that the iron ore concentrate grade is effectively improved, the effective utilization rate of resources is high, the recycling process is simple, energy consumption is low, and high economic benefits are achieved.

The invention discloses a temperature control film with an underwater gas interception or collection function and a preparation method, and belongs to the technical field of functional materials. Thetemperature control film is composed of a heat insulation layer, two super-hydrophobic/super-aerophilic microstructure layers, two heating electrode layers and two temperature-sensitive layers, wherein the two heating electrode layers are symmetrically distributed on the upper surface and the lower surface of the heat insulation layer; the two super-hydrophobic/super-aerophilic microstructure layers are adopted to wrap the heating electrodes and form a sandwich structure with the heat insulation layer; the temperature-sensitive material layers are fixed on the outer surfaces of the two super-hydrophobic microstructure layers; and through holes penetrating through the whole temperature control film are formed between the heating electrodes. The temperature control film can be used for intercepting or collecting bubbles in water medium, and due to the fact that underwater interception or collection is mainly related to physical properties of the bubbles and is irrelevant to gas types, various gases such as air, oxygen, methane, hydrogen and nitrogen can be intercepted or collected.