1381 results about "Methanol water" patented technology

The invention discloses an instant hydrogen-production power generation system and method. The system comprises a hydrogen-production subsystem, a power generation subsystem and a collection and utilization subsystem, wherein the hydrogen-production subsystem, power generation subsystem and collection and utilization subsystem are connected sequentially; the hydrogen-production subsystem uses methanol water to produce hydrogen, and transfers the produced hydrogen to the power generation subsystem in time through a transfer pipeline for power generation; and the collection and utilization subsystem is connected with an exhaust channel outlet of the power generation subsystem, and is used for collecting water from discharged gas or collecting water as the raw material of the hydrogen-production subsystem. The system and method can collect residual gas discharged from the power generation subsystem, and extract hydrogen, oxygen and water from the residual gas; and the hydrogen and oxygen can be combusted to release heat so as to provide heat energy for the power generation subsystem, and the water can be transferred to the hydrogen-production subsystem for cyclic utilization, so that the system does not need any additional water source. The system and method can enhance the power generation efficiency of the system and save the energy source.

The invention discloses a system and a method for instant hydrogen production and power generation. The system comprises a hydrogen production subsystem, an air pressure adjusting subsystem and a power generation subsystem, wherein the hydrogen production subsystem is used for preparing hydrogen from methanol water and transmitting the prepared hydrogen to the power generation subsystem in real time through a transmission pipeline; the transmission pipeline is provided with the air pressure adjusting subsystem for adjusting air pressure inside the transmission pipeline; the power generation subsystem is used for generating power by virtue of hydrogen prepared by the hydrogen production subsystem; the air pressure adjusting subsystem comprises a microprocessor, an air pressure sensor, a valve controller and an air outlet valve; the air pressure sensor is arranged in the transmission pipeline, and is used for sensing data of the air pressure inside the transmission pipeline and sending the data of the air pressure to the microprocessor; the microprocessor is used for controlling the on and off of the air outlet valve according to the data of the air pressure sensed by the air pressure sensor. Power can be generated by instantly prepared hydrogen, a hydrogen buffer tank is not required, and thus the portability and mobility of the hydrogen production and power generation system can be improved.

The invention discloses a zero-carbon-emission hydrogen production system by methanol water reforming and application and a hydrogen production method thereof. The hydrogen production system comprises a methanol water storage vessel, a delivery pump, a first heat exchanger, a reformer and a carbon dioxide recovery device, wherein the reformer is provided with a reforming chamber, an electromagnetic heater and a hydrogen purification device; the electromagnetic heater provides heat energy for the reforming chamber; the reforming chamber is used for hydrogen production reaction of methanol and water by reforming to obtain carbon dioxide and hydrogen; carbon dioxide and hydrogen are mixed with water vapor to form high-temperature mixed gas, and the high-temperature mixed gas is delivered into the hydrogen purification device; after purification and separation, hydrogen is delivered out, at the same time carbon dioxide and unreacted water vapor mixed gas are also delivered out, and then carbon dioxide and unreacted water vapor mixed gas are delivered into the carbon dioxide recovery device after passing through the first heat exchanger; the carbon dioxide recovery device is a replaceable modular carbon dioxide recovery device and used for recovering carbon dioxide and part of the water vapor. The zero-carbon-emission hydrogen production system provided by the invention can recover carbon dioxide, has no impact on the environment and causes no harm to the hydrogen production system self and is beneficial for popularization and application in the field of new energy resources such as fuel cell cars.

The invention discloses an electric generator based on a methanol water hydrogen-making system and an electricity generation method thereof. The electric generator comprises a methanol water storage container, a delivery pump, a heat exchanger, a reformer, a separation device and a fuel cell, wherein the delivery pump is used for delivering methanol and water to a reforming chamber of the reformer; the heat exchanger is used for carrying out heat exchange on the low-temperature methanol and water and a high-temperature mixed gas output from the reforming chamber; the reformer is provided with the reforming chamber and an electric heater, and the electric heater provides heat energy for the reforming chamber; and the high-temperature mixed gas which takes carbon dioxide and hydrogen as main parts is prepared in the reforming chamber, passes through the heat exchanger and then enters the separation device to be separated to obtain the hydrogen, and the hydrogen is delivered to the fuel cell and subjected to electrochemical reaction in the fuel cell to generate electric energy, a part of the electric energy provides electricity for the delivery pump and the electric heater, and the rest of the electric energy is output. According to the electric generator, the reformer has no need of being provided with a combustion chamber, an air inlet fan, an air inlet channel and a smoke window, the heating temperature inside the reformer is easily controlled and stable, and the reformer is simple in structure, stable in operation and low in overhaul difficulty.

The invention discloses a reformer of methanol-water hydrogen manufacturing equipment, and a manufacturing technology of reformer, relating to the technical field of methanol-water hydrogen manufacturing equipment. The reformer of the methanol-water hydrogen manufacturing equipment comprises a reformer shell, wherein the reformer shell sequentially comprises a stainless steel inner shell, an insulating cotton layer and a mica outer shell from inside to outside, the diameter-thickness ratio of the reformer shell to the stainless steel inner shell is (150:0.8)-(150:2.5), the diameter-thickness ratio of the reformer shell to the insulating cotton layer is (150:10)-(150:20), and the diameter-thickness ratio of the reformer shell to the mica shell is (150:1.5)-(150:3.5). The reformer not only is high-temperature-resistant and high in strength, but also is good in insulating property, corrosion-resistant, oxidization-resistant, waterproof, non-conductive, and light in weight.

This invention discloses a method for reforming methyl alcohol vapour to prepare hydrogen including: preheating, vapouring to 230-280deg.C raw materials of methyl alcohol and water in the mol ratio of 1 :1-1.6, then carrying out catalyzing and reforming reaction in a reactor to be mixed and puried characterizing that : a, when starting, the method utilizes methyl alcohol as the heat-supply material and utilizes the discharge gas in reforming and puring alcohol and its vapour after starting up, b, the alcohol and its discharge gas supply heat by independent burning sprayers of alcohol and discharge gas in a heating furnace, c, waste gas after combustion is discharged after adsorption and purification, which replaces traditional coal and oil as the heat supply fuel.

The invention discloses a methanol water hydrogen-making machine and a hydrogen-making method thereof. The methanol water hydrogen-making machine comprises a methanol water storage container, a delivery pump, a heat exchanger, a reformer, a separation device and a fuel cell, wherein the delivery pump is used for delivering methanol and water inside the methanol water storage container to a reforming chamber of the reformer; the heat exchanger is used for carrying out heat exchange on the low-temperature methanol and water and a high-temperature mixed gas output from the reforming chamber; the reformer is provided with the reforming chamber and an electric heater, and the electric heater provides heat energy for the reforming chamber; and the high-temperature mixed gas which takes carbon dioxide and hydrogen as main parts is prepared in the reforming chamber, passes through the heat exchanger and then enters the separation device to be separated to obtain the hydrogen, and a part of the hydrogen enters the fuel cell and generates electrochemical reaction in the fuel cell to generate electric energy to provide electricity for the delivery pump and the electric heater. According to the methanol water hydrogen-making machine, the reformer has no need of being provided with a combustion chamber, an air inlet fan, an air inlet channel and a smoke window, the heating temperature inside the reformer is easily controlled and stable, and the reformer is simple in structure, stable in work and low in overhaul difficulty.

The present invention relates to process of co-producing methyl tert-butyl ether and tert-butyl alcohol with isobutene and methanol in C4 fraction. The present invention features that two kinds of product are produced in an identical equipment with reduced investment, and that separation is completed through several reactions, resulting in simplified equipment and facilitated separation.

The invention discloses an enclosed methanol-water steam reforming fuel cell hydrogen source system, which comprises a methanol supplying device, a liquid oxygen device, a carbon dioxide storage device, a water storage device, and a methanol hydrogen producing device; wherein the methanol hydrogen producing device comprises an evaporation device, a reforming device, a combustion device, a carbon monoxide selective oxidation reactor, and other auxiliary systems; and the combustion device, reforming device, evaporation device, and carbon monoxide selective oxidation reactor are integrated into a module. According to the hydrogen production method, methanol and water are gasified by the evaporation device and then react in the reforming device to obtain reformed gas; then the reformed gas is processed by the monoxide selective oxidation reactor, the concentration of carbon monoxide in reformed gas is further reduced, and finally the reformed gas is introduced into the fuel cell system to carry out electrochemical reactions. The provided system has the advantages that the system operates in an enclosed space, the operability and safety of the system are both improved; the heat exchange and reactions are well matched, and the whole reforming hydrogen production system is high efficient and compact.

The invention discloses a methanol water hydrogen production power generation system and a hydrogen production power generation method. The methanol water hydrogen production power generation system comprises a methanol water storage container, a conveying pump, a methanol water hydrogen production system, a fuel battery, a water circulation cooling system and a heat pump device, wherein the methanol water storage container is used for storing a methanol water raw material; the methanol water raw material can be conveyed to the methanol water hydrogen production system through a conveying pipeline under the driving of the conveying pump; the methanol water hydrogen production system is used for implementing reforming reaction on methanol and water to produce hydrogen, and used for providing hydrogen to the fuel battery; the fuel battery is used for generating electric energy through electrochemical reaction of hydrogen and oxygen; the water circulation cooling system is used for radiating heat and cooling the fuel battery; and the heat pump device is used for absorbing heat of hot water in the water circulation cooling system, used for converting the heat into a high-temperature heat source, and used for heating the methanol water raw material inside the conveying pipeline. By adopting the methanol water hydrogen production power generation system and the hydrogen production power generation method, the fuel battery can work stably and reliably, and the heat generated from the fuel battery can be sufficiently utilized.

The invention discloses a preparation method of high-purity ellagic acid; tara powder is taken as raw material, extracted by purified water or 50-percent to 90-percent ethanol or a methanol water solution, hydrolyzed by concentrated sulfuric acid or hydrogen peroxide, purified by using diethylamine or triethylamine and crystallized, thus obtaining the high-purity ellagic acid; the method has simple technique and is suitable for industrialized production.

The present invention belongs to the field of chemical technology, and especially one kind of copper base catalyst with nanometer carbon material as co-catalyst for vapor reformation of methanol to prepare hydrogen and its preparation process. The catalyst is prepared through the process including the steps of: compounding 0.1 M solution of Cu / Zn / Al nitrate; compounding 0.1 M solution of sodium carbonate, dropping the 0.1 M solution of Cu / Zn / Al nitrate and 0.1 M solution of sodium carbonate in the same rate into reactor with nanometer carbon material for co-precipitation under strong stirring and 60 deg.c to obtain carbonate coprecipitate containing nanometer carbon material; washing, drying, roasting, etc. The prepared catalyst has unique porous structure of great specific surface area, high low temperature activity and high hydrogen selectivity, and may be used in preparing reformed product with hydrogen content up to 75 % and CO content lower than 0.1 %.

The present invention relates to internal combustion engine afterheat utilizing technology, and is especially methanol catalytically reforming hydrogen producing apparatus utilizing afterheat of internal combustion engine and its control method. The apparatus includes mainly methanol aqua gasifying cavities in the front part, middle part and back part of the reformer casing, catalytically reacting cavity and reformed gas product cavity. In the middle part inside the reformer casing, there are porous honeycomb ceramic with inside catalytically reacting cavity; and the inner wall of the catalytically reacting cavity has set honeycomb pores with reforming catalyst coated to the inner wall. One heat exchange pipe penetrates the porous honeycomb ceramic axially. The present invention has integrated heat exchange pipe and porous honeycomb ceramic, and possesses compact structure, high heat exchange efficiency, high hydrogen rate and other advantages.

The invention relates to a liquid chromatography for detecting anabolic hormone drug residue in animal-derived food, which is characterized by first sampling: animal musculature is taken off the fat and connective tissue, then minced and evenly ground, and the sample is weighed; extracting: anabolic hormone extract is extracted from the weighed sample by methanol ultrasonic extraction, the extract is evaporated to dryness in water bath through a rotary evaporator, and the residue is dissolved by methanol aqueous solution; purifying: C18 Solidoid extraction column on the extract is carried out solid phase extraction; and testing by devices: the filtrate is tested by opposite phase high efficiency liquid chromatography, quantified by external reference method-peak area, and then carried out with binary gradient elution. In the invention, the detected sample is complex biological sample; the established method can complete one detection in about one hour and is simple and fast, with reliable sensitivity and low cost; the method can analyze more veterinary hormone drug species than the synchronous usage of the existing GC or HPLC methods with easier operation, and has lower cost than the existing GC / MS and LC / MS or LC / MS / MS methods with low solvent toxicity.

The invention provides an extraction and purification method of cordycepin from Cordyceps militaris, and belongs to the deep-processing technical field of agricultural products. The method comprises the following steps: crushing Cordyceps militaris raw material, mixing the raw material with water at 1:20 raw material / water ratio, performing ultrasonic extraction, and performing centrifugal filtration on obtained extracting solution and pouring in a macroporous resin column at the adsorption flow of 1.8BV / hr; taking 15% methanol aqueous solution as an eluant to perform resin column elution, and decompressing and condensing obtained eluent at the temperature of 60 DEG C by a rotary evaporator to obtain Cordyceps militaris cordycepin concentrate. The method can help realize aqueous solution extraction of the cordycepin from the Cordyceps militaris raw material at low temperature, and the extraction rate reaches 85%; and polysaccharide and protein can be removed from the extract by macroporous resin separation and purification, thus the content of the cordycepin in the extract can reach 10%. The cordycepin in the Cordyceps militaris product has high activity, can be taken as a raw material for producing cordycepin monomer and can also be directly taken as an additive of health products and functional food, thus the cordycepin has wide market development prospect.

A process for producing a purified synthesis gas stream from a carbonaceous feedstock, the process comprising the steps of(a) partial oxidation of the carbonaceous feedstock with a molecular oxygen comprising gas to obtain a synthesis gas comprising water, hydrogen sulphide, and carbon dioxide besides the main constituents carbon monoxide and hydrogen,(b) mixing the synthesis gas and methanol and reducing the temperature of said mixture and separating a liquid methanol-water mixture from a cooled gaseous synthesis gas,(c) contacting the cooled synthesis gas obtained in step (b) with methanol to decrease the content of hydrogen sulphide and carbon dioxide in the synthesis gas, thereby obtaining a rich methanol stream comprising hydrogen sulphide and carbon dioxide and a synthesis gas stream depleted in hydrogen sulphide and carbon dioxide;(d) regenerating the rich methanol stream of step (c) by separating from the rich methanol a carbon dioxide fraction and a hydrogen sulphide fraction to obtain lean methanol, which lean methanol is used as methanol in step (b) and / or (c), and wherein(e) part of the methanol in the methanol-water mixture obtained in step b) is isolated and reused in step (b) and / or (c) and wherein,(f) another part of the methanol in the methanol-water mixture obtained in step (b) is recycled to step (a) under conditions such that methanol is converted into carbon monoxide and hydrogen.

The invention provides a method for refining and purifying propylene oxide. The method is characterized by comprising the steps that an epoxidation reaction product enters a propylene separating column to be separated into column top materials and column bottom materials, wherein the column top materials contain propylene, propylene oxide and methanol and contain or do not contain propane and water, and the column bottom materials contain methanol, water, hydrogen peroxide and high-boiling-point byproducts; column top materials from the propylene separating column enter a propylene stripping column, and the column top gases contain propylene and little propylene oxide and contain or do not contain propane and circulate to a reaction system after compression; and column bottom materials contain methanol, propylene oxide and few aldehyde ketone impurities and contain or do not contain water, enter a reactor filled with alkaline ion exchange resins to react to remove methyl formate and aldehyde out of the column bottom materials and are further refined through rectification to obtain the high-purity propylene oxide product. The invention also provides a separation method for preparing propylene oxide and the product through direct epoxidation. The method provided by the invention has the beneficial effects that the low temperature and low pressure process is adopted, thus increasing the yield of propylene oxide, reducing the losses of propylene oxide and reducing the operating costs of the devices.

A liquid organic, fuel cell is provided which employs a solid electrolyte membrane. An organic fuel, such as a methanol / water mixture, is circulated past an anode of a cell while oxygen or air is circulated past a cathode of the cell. The cell solid electrolyte membrane is preferably fabricated from Nafion™. Additionally, a method for improving the performance of carbon electrode structures for use in organic fuel cells is provided wherein a high surface-area carbon particle / Teflon™-binder structure is immersed within a Nafion™ / methanol bath to impregnate the electrode with Nafion™. A method for fabricating an anode for use in a organic fuel cell is described wherein metal alloys are deposited onto the electrode in an electro-deposition solution containing perfluorooctanesulfonic acid. A fuel additive containing perfluorooctanesulfonic acid for use with fuel cells employing a sulfuric acid electrolyte is also disclosed. New organic fuels, namely, trimethoxymethane, dimethoxymethane, and trioxane are also described for use with either conventional or improved fuel cells.

The present invention discloses one kind of Cu-Zr catalyst for steam reforming of methanol to prepare hydrogen and its preparation process. The catalyst without Zn and Al components contains CuO10-80 mol%, ZrO2 20-90 mol% and MOx 0-20 mol%, where M is one of Ce, La, Fe, Y and Mn. The Cu-Zr catalyst is used for steam reforming of methanol to prepare hydrogen, and has high activity, high hydrogen selectivity and very high stability. Specifically, it has conversion rate in steam reforming of methanol of 90-99 %, hydrogen selectivity of 95-99 % and CO content in the product lower than 0.5 %.

The invention discloses a method for preparing starch nanocrystal, and belongs to the field of modified starch processing. The method is based on the principle that lipid layers in waxiness corn starch grains have resistance for acid, the starch is prompted to be crushed because of homogenization treatment under a certain pressure, the lipid is prompted to be digested through Soxhlet extraction by using an alcohol-water solution, a pore structure from outside to inside is formed, then the resistance to the acid is eliminated, and the penetration of the acid inside the starch is prompted under a negative pressure condition so as to accelerate hydrolysis of the starch grains in an amorphous area. The method specifically comprises the following steps: homogenously crushing the starch grains under a pressure of 50-150 MPa, degreasing the crushed starch by using a 70-90% methanol-water solution, and accelerating hydrogen ions in sulfuric acid to rapidly penetrate into the starch grains to be subjected to restrictive hydrolysis under a 0.06-0.1MPa negative pressure condition, so as to prepare the nanocrystal. Through the technical measures, the hydrolysis period of the starch is shortened to be 48-72 hours, the starch nanocrystal yield is greatly improved to be 19-25%, and the particle size distribution is 20-300nm.

The invention discloses an energy complementation self power supply system, which comprises a solar energy power generation device, a wind energy power generation device, a methanol-water reforming hydrogen production power generation module, an AC DC power conversion device, an electrolytic hydrogen production device, a first methanol synthesis device, a methanol-water storage and conveying device and a load, wherein the solar energy power generation device and the wind energy power generation device provide power for the load and the electrolytic hydrogen production device; the electrolytic hydrogen production device is used for electrolyzing water for hydrogen production, the produced hydrogen is fed to the first methanol synthesis device for synthesizing methanol, in the condition of not sufficient solar energy and wind energy, the synthesized methanol is conveyed to the methanol-water reforming hydrogen production power generation module for hydrogen production and power generation, and power is provided for the load; and the methanol-water reforming hydrogen production power generation module comprises a reformer and a fuel cell, methanol and water are subjected to a reforming hydrogen production reaction in the reformer, the produced hydrogen is fed to the fuel cell, and in the fuel cell, the hydrogen and oxygen in the air are subjected to an electrochemical reaction, and power output is generated. Multiple energies generate power in a complementary mode, power supply continuity is good, and control is easy.

The invention discloses a determination method of residual amount of glufosinate, glyphosate and aminomethyl phosphoric acid in food. The determination method of residual amount of glufosinate, glyphosate and aminomethyl phosphoric acid in food comprises the following steps: in the sample pretreatment, firstly, extracting glufosinate, glyphosate and aminomethyl phosphoric acid in a food sample by a methanol water solution in sample pretreatment; then purifying an extracting solution by selecting a C18 dispersive solid-phase extraction agent; and finally, filtering, deriving, and determining three compounds qualitatively and quantitatively synchronously by combining with high performance liquid chromatography-tandem mass spectrum. According to the method provided by the invention, the operation is simple and convenient, and the reproducibility is good, and impurities in a sample extraction solution can be removed effectively; the pretreatment is the supplement and improvement of the existing QuEChERS method; the recycling rate can reach 70.5%-91.2%; the relative standard deviation is 4.5%-7.83%; the limit of quantification is 50micro-g / kg; the determination method can completely meet the technical requirement on safety detection of China, European Union, America and Japan, and can provide powerful technical support for food safety and export trade healthy development for people of China.

The invention discloses an air conditioning system based on a methanol water hydrogen manufacturing and power generating system and a control method thereof. The air conditioning system comprises a methanol water reforming hydrogen manufacturing device, a fuel cell and a thermoelectric mixed air conditioning device. The methanol water reforming hydrogen manufacturing device is used for methanol and water to generate reforming hydrogen manufacturing reaction, hydrogen manufactured from the reforming hydrogen manufacturing reaction is conveyed to the fuel cell, and heat in exhausted waste gas can be conveyed to a heat absorbing type refrigerating unit in a reforming hydrogen generating reaction process. The fuel cell is used for hydrogen and oxygen to generate electrochemical reaction to generate electricity, and the generated electricity can be supplied to an electric air conditioning unit. The thermoelectric mixed air conditioning device comprises the heat absorbing type refrigerating unit and the electric air conditioning unit, wherein the heat absorbing type refrigerating unit can absorb heat in the exhausted waste gas of the methanol water reforming hydrogen manufacturing device to obtain refrigeration, and the electric air conditioning unit can consume the electricity generated by the fuel cell to obtain refrigeration. The air conditioning system achieves environmental friendliness, saves energy, is convenient and is hardly affected by areas and environments. Furthermore, the utilizing rate of energy in methanol water materials is high.

The invention discloses a multi-combination independent alcohol-water hydrogen generation fuel cell car. The multi-combination independent alcohol-water hydrogen generation fuel cell car comprises a methanol water storage vessel, at least two groups of methanol water reforming hydrogen generation and power generation modules, a car motor and at least two conveying pumps, wherein the methanol water reforming hydrogen generation and power generation modules are integrated with a reforming device and a fuel cell, a reforming chamber and a hydrogen purifying device are arranged in the reforming device, the temperature in the reforming chamber is 300 to 570 DEG C, methanol and water have the reforming hydrogen generation reaction in the reforming chamber to prepare hydrogen-containing gas, the hydrogen-containing gas is purified by the hydrogen purifying device to obtain hydrogen, and obtained hydrogen is supplied to the fuel cell; the fuel cell is used for generating electric power which is used for powering the car motor; the car motor is used for driving a car axle to rotate so as to enable a car to run. According to the invention, the speed for converting methanol and water raw materials into hydrogen is high, the methanol conversion efficiency is high, the utilization rate of methanol is high, and the hydrogen-containing gas is easy to purify; the reforming device is easy to start, the stability is good, the vibration quantity is small, parameters such as the hydrogen generation temperature are sensitive to control, the safety is high, and the reliability is high.

The invention relates to a method for determining the fluorescent luminosity for the immunity affinity column of aflatoxicosis in rice, which comprises such procedures as extracting, cleaning, determining and calculating, etc.; and is characterized in that: the extracting procedure is to fetch 10.0g sample, add 2.0-2.5g NaCl and 60-80% methanol-water solution 50.omL, and extract by ultrasonic for 10-20 min; in the cleaning procedure, when cleaning the affinity column, first the affinity column is showered by a tween -20 / PBS solution, then by a methanol: water =2:8 solution, finally by water. The invention has the advantages that the recovery rate is more near to the actual value, the accuracy is higher, the reagent is reduced, the inspection cost is reduced, the environmental pollution is reduced, and the calculation is convenient.

The invention relates to barrier separation technology field, in particular to an organic to inorganic infiltration and vaporization and preparation method and application. By the chemical vapor deposition, graft polymerization and ring cleavage reaction on the surface of macroporous ceramic membrane, make out hydrophilcity compound infiltration vaporization separation membrane with inorganic ceramic membrane as carrier. Wherein, graft polymerization is preceded in an oleic phase, free radicals graft comprises olefin compound of epoxy group. The separation membrane not only has good chemical and heat stability, but also shows excellent performance in the separation of isopropanol-water solution and especially in the separation of methanol water solution.

The extracting process of bilobalide A, B and C includes the polyamide column adsorption of the gingko extract as material, concentration and crystallization to obtain coarse crystal; or twice extraction of gingko leaf as material, concentration, filtering, polyamide column adsorption, collecting effluent, eluting polyamide column with alcohol, merging the effluent and the eluent, elution in macroporous resin column with alcohol, concentration and crystallization to obtain coarse crystal; and re-crystallizing the coarse crystal in methanol water to obtain bilobalide A, B and C. Bilobalide A, B and C may be produced into dripping pill, granule or capsule. The present invention has simple process, high yield, and product with bilobalide A, B and C content up to 70 %.

The invention reveals a high efficiency methanol-water hydrogen production system and a hydrogen production method thereof. The system comprises a liquid reservoir vessel, a heat exchanger, a vaporizer, a reforming chamber and a separation chamber, wherein the liquid reservoir vessel, the heat exchanger, the vaporizer, the reforming chamber and the separation chamber are successively connected through pipelines, a ceramic membrane separator and a metallic palladium membrane separator are arranged in the separation chamber, gas entering into the separation chamber is pretreated by the ceramic membrane separator to obtain high purity hydrogen, and then the high purity hydrogen enters into the metallic palladium membrane separator so as to obtain hydrogen with higher purity. According to the high efficiency methanol-water hydrogen production system and the hydrogen production method thereof, the high purity hydrogen (with a purity of about 99%) is separated from reformed gas through the ceramic membrane separator at first, and then the hydrogen with higher purity (more than 99.9999%) is separated through the metallic palladium membrane separator.

The invention provides a method for preparing ethylene glycol through photocatalytic conversion of methanol, and relates to ethylene glycol. The method for preparing ethylene glycol through photocatalytic conversion of methanol has the characteristics of greenness, environment friendliness, mild reaction conditions, high product selectivity and the like. The method comprises the following steps: adding a sulphide semiconductor catalyst or modified sulphide semiconductor catalyst into solvent, wherein the solvent is methanol or a methanol-water solution; removing oxygen gas in the system; and turning on a lamp source to perform photocatalytic reaction so as to obtain ethylene glycol. The ethylene glycol can be generated through conversion of methanol after performing photocatalytic reaction under the condition of visible light irradiation for some time by taking the sulphide semiconductor or modified sulphide semiconductor as a photocatalyst, thereby having the characteristics of greenness, environment friendliness, mild reaction conditions, high product selectivity and the like.