38 results about "Methanol reformer" patented technology

The invention discloses an MEMS (Micro-Electromechanical Systems) methanol reforming fuel cell system, belongs to the field of methanol reforming fuel cells and aims to solve the problems of a traditional methanol reforming fuel cell system. The MEMS methanol reforming fuel cell system comprises a shell, a liquid storage bottle, an MEMS methanol reformer, an MEMS proton exchange membrane fuel cell, an MEMS air-liquid pump, a bi-directional valve, a lithium cell, a managing system, a left side fan and a right side fan, wherein the shell is in a cuboid shape, the liquid storage bottle is arranged on the outer surface of the back side of the shell, the MEMS methanol reformer, the MEMS proton exchange membrane fuel cell, the MEMS air-liquid pump, the bi-directional valve, the lithium cell, the managing system, the left side fan and the right side fan are arranged in the shell, an input port of the MEMS methanol reformer is communicated with a methanol outlet of the liquid storage bottle by virtue of a pipeline, the MEMS air-liquid pump and the bi-directional valve are arranged on the pipeline, an output port of the MEMS methanol reformer clings to an anode input port of the MEMS proton exchange membrane fuel cell tightly, and the contact position is sealed by a sealing material.

The method of burning methanol in an ignition type engine includes the following steps: 1. heating methanol reforming catalyst inside the methanol reformer with electrothermal PTC element and maintaining the temperature at 200-300 deg.c; 2. jetting methanol into the reformer for reaction to produce reformed methanol gas containing hydrogen and CO; 3. mixing the reformed methanol gas and air inside the inlet manifold to form mixed inflammable gas; 4. starting the engine to burn the mixed inflammable gas; and 5. jetting more methanol to form mixed inflammable gas essential for the engine in raised load, so as to make the engine burn mixed gas of nitrogen, CO, methanol and air. The present invention improves the cold start performance of engine burning methanol, eliminates formaldehyde exhaust pollution, raises the burning efficiency, lowers the furl consumption, reduces exhaust pollution and saves petroleum resource.

The invention discloses a foamed metal aluminum surface modification catalyst carrier, a preparation method of the carrier, and a method for preparing alcohol type reforming catalysts by utilizing the carrier. The carrier is prepared from a foamed metal aluminum framework and a porous oxide ceramic membrane growing by modification on the surface of the framework. The method comprises the following steps: putting porous foamed aluminum as a positive pole into an electrolyte containing 5-20g of aluminate, silicate and fluorozirconate per milliliter, and applying direct or alternating voltages to perform microarc oxidation, thereby forming a layer of oxidized ceramic membrane, and carrying the catalyst on the surface of the ceramic membrane as a substrate, thereby obtaining the alcohol type reforming catalysts. The problems such as insufficient contact of reaction gas with the catalyst, low utilization rate of the catalyst, and the negative effects of the catalyst framework on the catalyst in the existing methyl alcohol reformer can be effective solved and the generation of carbon monoxide is reduced to a certain degree.

The invention provides a process for producing H₂ by steam reforming of methanol, which process comprises contacting a gas phase comprising (a) CH₃OH and (b) H₂0 with a solid catalyst, which solid catalyst comprises a mixed metal oxide, which mixed metal oxide comprises copper, zinc and gallium, wherein the atomic percentage of copper relative to the total number of metal atoms in the oxide is from 20 at. % to 55 at. %. The solid catalyst itself is also an aspect of the present invention, as is a process for producing the catalyst, which process comprises: (1) a co-precipitation step, comprising contacting: (a) a solution of copper nitrate, zinc nitrate and gallium nitrate, wherein the atomic percentage of copper relative to the total number of metal atoms in said solution is from 20 at. % to 55 at. %, with (b) a metal carbonate, to produce a co-precipitate comprising said copper, zinc and gallium; (2) a separation step, comprising separating the co-precipitate from solution; (3) a calcination step, comprising calcining the co-precipitate by heating the co-precipitate in air; and, optionally, (4) a reduction step, comprising heating the calcined product in the en presence of H₂. Further provided is the use of the catalyst of the invention in a process for producing H₂ by steam reforming of methanol. Additionally, the invention provides a fuel cell system comprising a fuel cell, such as a proton exchange membrane (PEM) fuel cell, and a methanol reformer comprising a catalyst of the invention. Portable electronic devices comprising a fuel cell system of the invention are also provided. A further aspect of the invention is the use of a catalyst of the invention in a process for producing methanol by the hydrogenation of carbon dioxide. Thus, the invention further provides a process for producing methanol by the hydrogenation of carbon dioxide, which process comprises contacting a gas phase comprising (a) C0₂ and (b) H₂, with a catalyst of the invention.

The invention discloses a preparation method of a platinum catalyst by taking porous foaming aluminum as a carrier for a methyl alcohol reformer combustion chamber. The preparation method comprises the following steps: placing porous foaming aluminum as an anode into electrolyte containing one or two of aluminate, silicate, fluoroziconate and sodium hypophosphite, carrying out micro-arc oxidation treatment by applying a direct-current or alternating-current voltage for 10-120 minutes, forming a layer of porous oxidation ceramic membrane on the surface of the foaming aluminum, and loading the Pt based catalyst on the surface of the ceramic membrane serving as a substrate, thereby obtaining the Pt based catalyst for the methyl alcohol reformer combustion chamber. According to the invention, the problems of insufficient contact of hydrogen and platinum in the existing methyl alcohol reformer combustion chamber, low catalyst utilization ratio, adverse effect to the catalyst by a catalyst framework and the like are solved.

The invention discloses a fuel cell hydrogen powered automobile. The objective of the invention is to solve the problems of incontinence in hydrogen feeding, hidden security hazards in use, low structural compactness and inconvenient assembly of an existing hydrogen fuel powered automobile. The fuel cell hydrogen powered automobile of the invention comprises a frame; the front end of the frame is provided with a hydrogen production by methanol reformer, a fuel cell, a DC/DC converter, a motor driving system and an automobile heat dissipation system; the rear end of the frame is provided with a methanol tank; the frame is provided with a lithium-ion power battery near the middle portion of the frame; the methanol tank is connected with the hydrogen production by methanol reformer through a pipeline; the hydrogen production by methanol reformer provides hydrogen for the fuel cell; and the fuel cell is connected in parallel with the lithium-ion battery through the DC/DC converter so as to provide power for the motor driving system. According to the fuel cell hydrogen powered automobile of the invention, the hydrogen production by methanol reformer installed on the automobile is adopted to provide hydrogen, and so that the feeding of hydrogen is not required, and a hydrogen tank can be omitted, and the automobile is more secure and reliable in a use process. The fuel cell hydrogen powered automobile has the advantages of highly compact structure, convenient assembly and reliable connection.

The invention discloses a hydrogen purifying module of a pure hydrogen and pure oxygen high-temperature battery system. The hydrogen purifying module adopts the technical scheme that the hydrogen purifying module comprises a methanol reformer, an oxygen generator and a hydrogen generator, wherein the oxygen generator is connected with the methanol reformer; the hydrogen separator is arranged in the oxygen generator; the methanol reformer utilizes methanol raw material and oxygen produced by the oxygen generator to generate part of oxidizing and oxidizing reforming reaction; the oxygen generator uses heat produced by the reaction of the methanol reformer to purify the hydrogen and oxygen; the methanol raw material is filtered pure methanol, and a palladium composite film is arranged in the hydrogen separator. The hydrogen purifying module has the advantages that the hydrogen separator is arranged in the oxygen generator, the heat of the reforming reaction is utilized, and the hydrogen and oxygen are separated and purified; the efficiency is high, the cost is low, and the energy-saving and environment-friendly effects are realized.

The invention relates to a methanol reforming produced hydrogen-rich gas combustion heat supply device, and belongs to the technical field of agricultural machinery. The device comprises a heat conduction oil heat exchange tube, a hydrogen-rich gas combustion furnace, a steam heat exchange tube, a steam/air heat exchanger, a flue gas heat exchanger, a flue gas/methanol + water preheater and a methanol reformer, wherein the methanol reformer is used for conveying prepared hydrogen-rich gas into the hydrogen-rich gas combustion furnace through a pipeline, the steam heat exchange tube and the heat conduction oil heat exchange tube are arranged at the lower part of the hydrogen-rich gas combustion furnace in parallel, the steam heat exchange tube is connected with the steam/air heat exchanger;and the heat conduction oil heat exchange tube is connected with the methanol reformer through a pipeline, the flue gas heat exchanger is positioned at the upper part of the hydrogen-rich gas combustion furnace, and the steam/air heat exchanger is located at the position of an air inlet of a drying box. The hydrogen-rich gas is produced by reforming of methanol, heat is produced through hydrogen-rich gas combustion, heat energy is provided for a drying machine, the heat utilization rate is greatly improved, pollutant emission is avoided, the device is green and environment-friendly, meanwhile, the hydrogen gas can be generated instantly and combusted instantly, and so that safety and reliability are achieved.

The invention discloses an online methanol reformer adopting a screen separating mechanism and utilizing engine exhaust. The online methanol reformer adopting the screen separating mechanism and utilizing the engine exhaust comprises a separating section; the separating section comprises condensation nets, a separating section shell, a liquid collecting cavity and an isolating plate; the isolatingplate is horizontally assembled on the inner wall of the separating section shell; the liquid collecting cavity is formed between the position below the isolating plate and the inner wall of the separating section shell; a plurality of liquid collecting holes are formed in the isolating plate; a plurality of the condensation nets are vertically arranged between the position above the isolating plate and the inner wall of the separating section shell; a methanol mixture inlet and a gaseous methanol outlet are respectively formed in the two sides of the separating section shell; a liquid methanol outlet is formed in the bottom of the bottom of the separating section shell; the liquid methanol outlet communicates with the liquid collecting cavity; the methanol mixture inlet communicates witha reforming methanol outlet of a reformer through a flange; according to the online methanol reformer adopting the screen separating mechanism and utilizing the engine exhaust, the separating sectionis arranged and the condensation nets are vertically arranged in the separating section, so that gas-liquid separating of the methanol mixture discharged from the reformer can be realized quickly; the separated liquid methanol flows back to a methanol box for storing; and the work efficiency of the reformer is improved.

The invention discloses a novel methanol reformer, and relates to the field of industrial equipment, and the methanol reformer comprises an alcohol water input port, a hydrogen-rich gas output port, a methanol air inlet, a reaction tail gas outlet, a cavity, a heat transfer plate and a catalyst layer. The cavity comprises three layers of runners, namely an upper-layer preheating treatment runner, a middle-layer methanol catalytic combustion runner and a lower-layer methanol catalytic reforming runner; the preheating treatment flow channel is used for receiving a methanol water solution conveyed through the methanol water input port and preheating the methanol water solution to generate methanol water vapor; the methanol catalytic combustion flow channel is used for providing heat for the preheating treatment flow channel and the methanol catalytic reforming flow channel; the methanol catalytic reforming flow channel is used for reforming methanol steam to produce hydrogen; each flow channel is of a snakelike flow channel structure, and the longitudinal direction of each flow channel is of a symmetrical increasing wave function. The problem of low utilization rate of the existing methanol reformer catalyst can be effectively solved, and the methanol steam reforming efficiency is improved.

The invention provides a methanol-water fuel reforming hydrogen production system and a control method thereof. The system comprises a methanol supply device, a combustor, a reformer, a fuel cell, anair blower and a controller. According to a fuel supply pipeline, a liquid can be supplied to the methanol reformer while a methanol fuel is supplied to the combustor, and a liquid supply mode of thereforming hydrogen production device is simplified; besides, by arranging a hydrogen recovery pipeline and a control method for freely switching combustion reactants, free switching between methanol water combustion and hydrogen combustion can be achieved, and stable control can be achieved in the switching process; and therefore, the methanol-water reforming hydrogen production system can be intelligently controlled, an energy utilization rate is increased, and the heat balance of the system is maintained.

The invention discloses a method for preparing a catalyst for a combustion chamber of a micro-methanol reformer. The steps of the method are as follows: the combustion chamber of the reformer with a flow field is used as an anode, placed in an electrolyte, and a DC or AC voltage is applied to the catalyst. The flow field is processed to form a layer of porous oxide ceramic film on the surface of the flow field, and then use it as a carrier to load the reforming catalyst Pt. The present invention adopts the micro-arc oxidation technology to directly grow the oxide ceramic film containing Al2O3 in situ on the surface of the flow field, and then use it as a carrier to deposit Pt. The catalyst prepared by the present invention can effectively solve the problem of existing methanol reformer combustion chamber There are problems such as poor adhesion of the catalyst, small contact area between the reaction gas and the catalyst, and low utilization of the catalyst.