836 results about "Pure oxygen" patented technology

Bionutritional compositions for plants and soils, such as liquid biostimulant compositions and emulsified compositions or solid biofertilizer compositions, produced from animal manure are disclosed. Also disclosed are processes for manufacturing such bionutritional compositions. The processes include the delivery of pure oxygen or oxygen-enriched air to aqueous animal waste slurry and further include subjecting the aqueous animal waste slurry to an autothermal thermophilic aerobic bioreaction (ATAB). The processes may also include a separation step to separate the digested or decomposed animal waste composition after ATAB into a substantially liquid component and substantially solid component, each capable of being further processed to produce a biostimulant composition and biofertilizer composition, respectively. Also disclosed are methods of using the bionutritional compositions for promoting plant health or conditioning soil.

The invention discloses a fluoride salt-free nitrate-free cast iron enamel semitransparent glaze as well as a preparation method and application thereof, and belongs to the technical field of enamel. The semitransparent glaze is prepared from quartz, anhydrous borax, sodium carbonate, potassium carbonate, calcium carbonate, potassium feldspar, zinc oxide, lithium carbonate, zirconium silicate, titanium dioxide, aluminum oxide, trisodium phosphate, antimony oxide, magnesium carbonate and barium carbonate according to a specific mass ratio. The preparation method comprises the steps of raw material mixing, high-temperature melting under a pure oxygen condition, wiredrawing detection, quenching and the like. The semitransparent glaze is completely free of fluoride salt and nitrate, the problems of fluoride emission and environmental protection equipment blockage are avoided from the source, the fluorine content of the product is not detected through detection, the product meets the requirements of European Union REACH regulations, meanwhile, the product has good porcelain surface, luster and low-temperature firing adaptability, and is suitable for cast iron matrixes, the firing temperature is 740-760 DEG C, and the firing time is 2-3 hours. The method can be used for producing green and environment-friendly enamel products.

According to the supercritical CO2 circulation and water electrolysis hydrogen production coupled alcohol-electricity co-production system and method, water in an electrolytic bath is electrolyzed through wind and light abandoned electricity, and oxygen and hydrogen are generated. Oxygen and coal are subjected to pure oxygen gasification in a gasification furnace, and generated gasified gases (mainly including methane CH4, hydrogen H2 and carbon monoxide CO) are subjected to direct-fired supercritical CO2 circulation for power generation. Waste gas exhausted by the turbine is subjected to heat recovery through the heat regenerator, water is condensed in the condenser, and remaining CO2 is fed into the gas tank to be stored. One part of CO2 is pressurized by a compressor and then is fed into the combustion chamber through a heat regenerator, and the other part of CO2 and H2 are catalyzed to synthesize methane. According to the system, wind and light abandoned electricity can be converted into hydrogen energy to be stored, efficient clean power generation of coal and synthesis of green methanol are achieved through direct-fired supercritical CO2 circulation, and the green methanol / electricity co-production system with zero carbon emission is formed.

The invention discloses a method for smelting high-proportion sefstromite in an oxygen blast furnace, which comprises the following steps: pure oxygen injection is adopted in the blast furnace, pure oxygen, hot coal gas and pulverized coal are injected from a tuyere, an iron material and coke are added from the top of the furnace, the volume percentage of N2 in the top coal gas is less than 25%, and the top coal gas is recycled after CO2 is removed. By means of the method for smelting the high-proportion sefstromite through the oxygen blast furnace, smelting that the proportion of the sefstromite in the blast furnace is larger than 60%, the mass fraction of TiO2 in the blast furnace slag is larger than 15% and smaller than 45%, and CO2 emission is reduced by 30% or above can be achieved, and the problem that in existing blast furnace smelting, when the proportion of the sefstromite is increased, the cost is low is solved. The problems that slag is thick, slag and iron are difficult to separate, furnace conditions are unsmooth, cost is high, carbon emission is high and the like exist in the prior art, so that the utilization efficiency of vanadium-titanium resources is higher, and smelting cost and carbon emission are lower.

The invention discloses a method for melting and smelting ferrochrome in an all-oxygen hydrogen-rich low-carbon furnace, which comprises the following steps: (1) proportioning and uniformly mixing chromite pellets, coke and lime according to the mass ratio of 1: (0.15-0.2): (0.08-0.15), and filling the mixture into the all-oxygen hydrogen-rich low-carbon furnace; (2) high-temperature hydrogen-rich gas at the temperature of 900-1100 DEG C is introduced into the middle of the furnace body, and selective reduction of ferrochrome oxide is achieved; blowing industrial pure oxygen at the lower part of the furnace body, combusting with coke to generate CO, and driving a secondary reduction reaction; (3) maintaining a high-temperature environment in the furnace through oxygen-fuel combustion to completely melt the materials into molten iron, and carrying out central stirring on the molten iron to form a vortex with the height-diameter ratio of 0.5-1.5; and (4) discharging the molten iron after the reaction is completed. According to the method, the reduction rate of chromium in the chromite exceeds 92%, the carbon emission is reduced by 40% or above compared with a traditional blast furnace and submerged arc furnace process, meanwhile, the method has the advantages of being high in smelting efficiency, low in energy consumption, stable in product quality and the like, and a low-carbon and efficient innovative path is provided for ferrochrome smelting.

The invention discloses a closed cathode pure oxygen fuel cell, which comprises a fuel cell stack, the fuel cell stack comprises a gas inlet end plate, a positive electrode collector plate arranged close to one side of the gas inlet end plate, a blind end plate and a blind end collector plate arranged close to one side of the blind end plate, and a plurality of stacked bipolar plates and membrane electrode assemblies are arranged between the gas inlet end plate and the blind end plate; the gas inlet end plate is provided with a hydrogen inlet, a hydrogen outlet, an oxygen inlet and an oxygen outlet, the positive electrode collector plate, the bipolar plate and the membrane electrode assembly are provided with an oxygen common channel and a hydrogen common channel, and the bipolar plate is provided with an oxygen flow channel and a hydrogen flow channel; the oxygen inlet and the oxygen outlet are communicated through the oxygen common channel and the oxygen flow channel to form an oxygen flow path; and the hydrogen inlet and the hydrogen outlet are communicated through the hydrogen public channel and the hydrogen flow channel to form a hydrogen flow path. Compared with a traditional fuel cell, the fuel cell provided by the invention has the advantages that the stability and the endurance are greatly improved, and the problem of poor performance of the traditional fuel cell is improved.

The invention discloses a method for preparing dimethyl furandicarboxylate by photocatalytic oxidation of 5-hydroxymethylfurfural, which is characterized in that nitrogen-doped carbon-loaded cobalt-based bimetallic is used as a photocatalyst, oxygen or pure oxygen in air is used as an oxygen source, and the dimethyl furandicarboxylate is efficiently prepared under illumination reaction conditions of normal temperature and normal pressure. The problems of low reaction efficiency, violent reaction conditions and the like in the prior art are solved, and the method has a good utilization prospect.

The invention discloses fluoride-salt-free and nitrate-free medium-temperature semitransparent glaze for steel plate enamel as well as a preparation method and application of the medium-temperature semitransparent glaze, and belongs to the technical field of enamel. The semitransparent glaze is prepared from quartz, potassium feldspar, anhydrous borax, sodium carbonate, titanium dioxide, monopotassium phosphate and zinc oxide according to a specific mass ratio. The preparation method comprises the steps of raw material mixing, high-temperature melting under a pure oxygen condition, wiredrawing detection, quenching and the like. The semitransparent glaze is completely free of fluoride salt and nitrate, the problems of fluoride emission and environmental protection equipment blockage are avoided from the source, the fluorine content of the product is not detected through detection, the product meets the requirements of European Union REACH regulations, meanwhile, the product has good porcelain surface, luster and firing adaptability, is suitable for a steel plate matrix, has the firing temperature of 800-840 DEG C and the firing time of 20-30 minutes, and is suitable for a steel plate. The method can be used for producing green and environment-friendly enamel products.

The invention discloses fluoride-salt-free and nitrate-free high-temperature acid-resistant translucent glaze for steel plate enamel as well as a preparation method and application of the translucent glaze, and belongs to the technical field of enamel. The semitransparent glaze is prepared from quartz, anhydrous borax, titanium dioxide, trisodium phosphate, potassium carbonate, lithium carbonate, aluminum oxide, zinc oxide and sodium carbonate according to a specific mass ratio. The preparation method comprises the steps of raw material mixing, high-temperature melting under a pure oxygen condition, wiredrawing detection, quenching and the like. The semitransparent glaze is completely free of fluoride salt and nitrate, the problems of fluoride emission and environmental protection equipment blockage are avoided from the source, the fluorine content of the product is not detected through detection, the product meets the requirements of European Union REACH regulations, meanwhile, the product has good porcelain surface, luster and firing adaptability, is suitable for a steel plate matrix, has the firing temperature of 840-880 DEG C and the firing time of 820-830 minutes, and is suitable for a steel plate. The method can be used for producing green and environment-friendly enamel products.

The invention discloses fluoride salt-free and nitrate-free low-temperature matte glaze for steel plate enamel as well as a preparation method and application of the low-temperature matte glaze, and belongs to the technical field of enamel. The matte glaze is prepared from quartz, borax pentahydrate, sodium carbonate, titanium dioxide, magnesium oxide, monopotassium phosphate, calcium carbonate, zinc oxide, magnesium carbonate, lithium carbonate, aluminum oxide and zirconium silicate according to a specific mass ratio. The preparation method comprises the following steps: mixing the raw materials, melting at 1300 + / -10 DEG C in a pure oxygen environment, and quenching after wiredrawing to detect a molten state. The matte glaze completely avoids the use of fluoride salt and nitrate, the problems of fluoride emission and environmental protection equipment blockage are eliminated from the source, the fluorine content of the product is not detected through detection, and the limit value requirements of European Union REACH regulations are met. Zinc oxide and ZnO / TiO2 are added, so that the liquid phase viscosity is reduced, ion diffusion is accelerated, and the opacity (opacification performance) and gloss of the porcelain glaze are enhanced.

The invention discloses a fluoride-salt-free and nitrate-free cast iron enamel zirconium white glaze as well as a preparation method and application thereof, and belongs to the technical field of enamel. The zirconium white glaze is prepared from quartz, borax pentahydrate, magnesium carbonate, potassium carbonate, potassium feldspar, zinc oxide, aluminum hydroxide, calcium carbonate, zirconium silicate, sodium tripolyphosphate and lithium carbonate according to a specific mass ratio. The preparation method comprises the steps of raw material mixing, high-temperature melting under a pure oxygen condition, wiredrawing detection, quenching and the like. The zirconium white glaze is completely free of fluoride salt and nitrate, the problems of fluoride emission and environmental protection equipment blockage are avoided from the source, the fluorine content of the product is not detected through detection, the product meets the requirements of European Union REACH regulations, and meanwhile, the zirconium white glaze has good porcelain surface, luster and firing adaptability, is suitable for cast iron matrixes, has the firing temperature of 740-760 DEG C and the firing time of 87-87 hours, and can be widely applied to cast iron substrates. The method can be used for producing green and environment-friendly enamel products.

The invention relates to a method for preparing high-purity 2, 6-naphthalic acid by oxidizing 2, 6-diisopropyl naphthalene. The method comprises the following steps: adding 2, 6-diisopropylnaphthalene, a catalyst, a solvent and an additive into a titanium reaction kettle, uniformly mixing, introducing nitrogen to remove oxygen, raising the temperature in the titanium reaction kettle to 150-220 DEG C, and introducing nitrogen to ensure that the pressure in the titanium reaction kettle is 0.5-1 MPa; the solvent is a mixture containing acetic acid and water; pure oxygen is introduced into the titanium reaction kettle, so that the pressure in the titanium reaction kettle is increased to 2.4-3.2 MPa, the reaction system reacts for 1-3 h under the condition that the pure oxygen is continuously introduced, and 2, 6-naphthalic acid is prepared; the 2, 6-naphthalic acid prepared by the method has the advantage of high purity.

The invention discloses a preparation method for producing an ultra-pure oxygen-free copper rod through an up-drawing continuous casting method, and belongs to the technical field of metal material machining. Comprising the following steps: selecting a cathode copper sheet as a raw material, performing oxygen-free copper rod traction in a three-body furnace consisting of a melting furnace, a transition bin and a holding furnace by adopting an up-drawing continuous casting method, adding the dried electrolytic copper sheet and charcoal into the melting furnace, and adjusting the temperature of a melt in the melting furnace; the molten copper liquid automatically flows into a transition bin to be subjected to standing and impurity removal, and charcoal and graphite flakes are laid on the surface of the copper liquid; a graphite crystallizer is inserted into molten copper, a guide rod is connected, a guide rod is prepared, the inlet and outlet water temperature of the crystallizer is adjusted, and the traction speed and pitch of a cast rod are set. According to the method, the oxygen content of the produced ultra-pure oxygen-free copper rod can be reduced to 3 ppm or below by controlling the quality of the cathode copper sheet of the copper rod, the temperature of the copper liquid, the solidification supercooling degree of the copper rod, the rod casting speed, the conditions of the crystallizer and combined control over charcoal and graphite flake reduction, and the application additional value of the oxygen-free copper rod is greatly improved.

The invention discloses a comprehensive utilization method and system for high-value organic wastes and adjustable target products, and belongs to the technical field of resource utilization of organic wastes. The system comprises gasification and carbonization equipment, an afterburning type waste heat boiler, a gas generator set, steam explosion equipment, activated carbon preparation equipment, anaerobic fermentation equipment, a methanol preparation system, flue gas waste heat recycling equipment, an ammonia gas preparation system, biomass charcoal pure oxygen combustion equipment, a green hydrogen preparation system and a biodiesel preparation system. The three technologies of gasification carbonization, steam explosion and anaerobic fermentation are coupled, the treatment efficiency is greatly improved, deep resource utilization of organic solid waste and organic wastewater is achieved through the same set of equipment, the equipment investment is reduced, and the occupied area is reduced; biomass green electric power generated by the gas generator set is used for splitting water to produce hydrogen and oxygen; and secondary gradient utilization and material reutilization of the waste heat of the flue gas are realized.

The invention provides a membrane separation oxygen production device capable of simultaneously producing medical oxygen and oxygen-enriched air, the device comprises a common oxygen production main machine, a membrane separation purification system and a pure oxygen production main machine, when the common oxygen production main machine needs to be purged, oxygen-enriched nitrogen, high-concentration oxygen-enriched air and waste gas can be utilized to purge an adsorption tower. The system has the advantages that the oxygen concentration can be automatically switched according to the requirements of a hospital, and medical oxygen and oxygen-enriched air are provided for the hospital at the same time or are independently provided for any one of the medical oxygen and the oxygen-enriched air; the membrane separation oxygen production technology is adopted, high-concentration waste gas generated during membrane separation medical oxygen production is used in the production process of oxygen-enriched air, the air-oxygen ratio is optimized, and the gas consumption is lower compared with a medical oxygen production system on the market; the waste gas exhausted from the direct current side in the medical oxygen generation process is rich in oxygen which is still contained in gas mainly containing argon and nitrogen and still contains high-concentration oxygen, the oxygen is used for producing oxygen-enriched air, the production efficiency is improved, the air amount needed by a product is reduced, and the effect of reducing energy consumption is achieved.

The invention discloses a method for measuring high and low calorimetric values of blast furnace fly ash, which relates to the technical field of blast furnace fly ash calorimetric values, and comprises the following specific steps: step 1, calibrating the thermal capacity of a calorimeter, continuously measuring a plurality of groups of thermal capacity data, and carrying out average value calculation to obtain the average thermal capacity data of the calorimeter to finish calibration; 2, measuring as received basis moisture of the sample; 3, measuring the air dry basis moisture of the sample; 4, measuring the air dry basis total sulfur content of the sample; 5, measuring the air dry basis hydrogen content of the sample; 6, measuring the cylinder calorific value of the sample; and 7, calculating high and low calorific values. According to the method, a rapid calorimeter is adopted as a detection instrument, a blast furnace dedusting ash sample is put into a sealed oxygen bomb filled with high-pressure pure oxygen to be burnt, the calorific value of a bomb cylinder is obtained, the moisture, total sulfur and hydrogen content of the bomb cylinder are measured and brought into a calorimeter testing system to be calculated, and therefore the high and low calorific values of the blast furnace dedusting ash are measured.

The invention discloses fluoride-salt-free and nitrate-free low-temperature pearlescent glaze for steel plate enamel as well as a preparation method and application of the pearlescent glaze, and belongs to the technical field of enamel. The pearlescent glaze is prepared from quartz, anhydrous borax, titanium dioxide, magnesium carbonate, sodium tripolyphosphate, potassium carbonate, lithium carbonate, potassium feldspar, zinc oxide and V-26 according to a specific mass ratio. The preparation method comprises the steps of raw material mixing, high-temperature melting under a pure oxygen condition, wiredrawing detection, quenching and the like. The pearlescent glaze is completely free of fluoride salt and nitrate, the problems of fluoride emission and environmental protection equipment blockage are avoided from the source, the fluorine content of the product is not detected through detection, the product meets the requirements of European Union REACH regulations, meanwhile, the pearlescent glaze has good porcelain surface, luster and low-temperature firing adaptability, is suitable for a steel plate matrix, has the firing temperature of 760-800 DEG C and the firing time of 10-20 minutes, and is suitable for a steel plate. The method can be used for producing green and environment-friendly enamel products.

The invention discloses fluoride-salt-free and nitrate-free low-temperature acid-resistant translucent glaze for steel plate enamel as well as a preparation method and application of the translucent glaze, and belongs to the technical field of enamel. The semitransparent glaze is prepared from quartz, anhydrous borax, titanium dioxide, trisodium phosphate, potassium carbonate, lithium carbonate, aluminum oxide, zinc oxide and sodium carbonate according to a specific mass ratio. The preparation method comprises the steps of raw material mixing, high-temperature melting under a pure oxygen condition, wiredrawing detection, quenching and the like. The semitransparent glaze is completely free of fluoride salt and nitrate, the problems of fluoride emission and environmental protection equipment blockage are avoided from the source, the fluorine content of the product is not detected through detection, the product meets the requirements of European Union REACH regulations, meanwhile, the product has good porcelain surface, luster and low-temperature firing adaptability, and is suitable for steel plate substrates, the firing temperature is 760-800 DEG C, and the firing time is 2-3 hours. The method can be used for producing green and environment-friendly enamel products.

The invention belongs to the field of new energy, and particularly relates to a water-cooled grate biomass gasifier and a biomass gasification method. The water-cooled grate biomass gasification furnace comprises a gasification furnace body of a downdraft structure, the gasification furnace body is internally provided with a feeding system, the feeding system comprises a feeding chute, a feeding sealing door and a feeding sealing door, the feeding chute is provided with an anaerobic system pipeline, and a feeding grate is located below the feeding sealing door; the water-cooling fire grate assembly is composed of multi-stage welding type water-cooling fire grate segments, and a cooling water cavity is formed in the water-cooling fire grate assembly. The hearth is divided into a drying layer, a pyrolysis layer, a reduction layer and an oxidation layer in the material moving direction. The gasifying agent supply system comprises a primary air duct, a secondary air duct, a steam injection pipeline I and a water vapor injection pipeline II, wherein pure oxygen is introduced into the primary air duct; the cooling circulation system comprises a circulation pipeline, a circulation water pump and a radiator, wherein the circulation water pump and the radiator are installed on the circulation pipeline. The circulation pipeline is communicated with the water-cooling fire grate assembly to form a closed circulation loop. The device is high in reliability, long in service life, low in emission, easy to control and good in gasification effect.

The invention discloses a preparation method of a metal oxide coated high-nickel ternary positive electrode material, which comprises the following steps of: dissolving a solution containing coated metal in an organic solvent under a stirring condition to obtain a solution containing metal oxide; adding the high-nickel ternary material powder into an organic solvent under ultrasonic operation to obtain a solution of the high-nickel ternary positive electrode material powder; dropwise adding the solution containing the metal oxide into the solution of the high-nickel ternary positive electrode material powder under ultrasonic operation to obtain a mixed solution; heating the mixed solution under a magnetic stirring condition to volatilize the solvent, collecting the material, and drying in a vacuum drying oven; and calcining the dried material in pure oxygen to obtain the metal oxide coated high-nickel ternary positive electrode material. The electrochemical performance of the high-nickel ternary positive electrode material at low temperature can be effectively improved, specifically, the surface of the positive electrode is regulated and controlled, the contact area of the surface of the ternary positive electrode material and electrolyte at low temperature is reduced, so that side reaction is reduced, and meanwhile, the coating layer with certain mechanical strength can be formed in the long-term cycle process at low temperature, so that the electrochemical performance of the high-nickel ternary positive electrode material is improved. Positive electrode breakage is effectively reduced, and the cycling stability of the high-nickel ternary positive electrode at low temperature is effectively improved.

The invention provides a method for optimizing an integrated coal gasification combined cycle process by utilizing solar energy. The method comprises the following steps: generating hydrogen and oxygen through photovoltaic electrolysis of water; the dead steam / oxygen mixed gas is heated through fused salt generated through photo-thermal; the coal gasifier is heated through fused salt generated through photo-thermal; carrying out pre-combustion carbon capture on the cooled synthesis gas through an MOF material with a photoinduced structural transformation property; the synthesis gas subjected to carbon capture in the combustion chamber and the other part of oxygen are subjected to pure oxygen combustion; and cooling the flue gas for carbon capture after combustion. According to the method, the operation load fluctuation, the energy consumption and the carbon capture cost of the coal gasification combined cycle process are reduced, and the overall economy is improved.

A process and a plant for the production of hydrogen or for the synthesis of ammonia, said process comprising the following steps: (a) performing a reforming process (101) of a hydrocarbon feedstock (1) to generate a raw syngas (2), said reforming process comprising at least an autothermal reforming step (104) in presence of oxygen-enriched air or pure oxygen (3) produced by an air separation unit (ASU; 103); (b) subjecting said raw syngas (2) to a post-treatment (102) providing hydrogen (H2; 4), a CO2-enriched stream (5), and a residual gas (6); said post-treatment comprising at least a water gas shift conversion step (105) of said raw syngas into a shifted syngas (7), a pressure swing absorption step (106), and a cryogenic separation step (107); wherein said pressure swing absorption step produces said hydrogen and a first tail gas (8) comprising carbon monoxide (CO), carbon dioxide (CO2), residual hydrogen (H2) and unreacted hydrocarbon feedstock from the shifted syngas (7), and said cryogenic separation step separates the CO2-enriched stream and a second tail gas (9) from said first tail gas; said post-treatment (102) comprising a further separation step (120) of a CO2-containing stream (11) and of the residual gas (6) from said second tail gas; (c) recycling said residual gas (6) as feed to said reforming process and / or as fuel to one or more fired heater(s) (10) of said process; (d) optionally feeding a portion (4.8) of said hydrogen (4) obtained in step (b) as fuel to one or more fired heater(s) of said process; (e) optionally an ammonia synthesis step (110) wherein said hydrogen (4) and a nitrogen (N2)-containing stream (12) produced by said ASU (103) are reacted in a given stoichiometric ratio and in ammonia (NH3) synthesis conditions to obtain an ammonia-containing product (13).

The invention relates to a preparation method of a lead selenide room-temperature medium-wave infrared detector, which comprises the following steps of: (1) depositing a lead selenide film layer on a substrate by adopting a magnetron sputtering technology and taking oxygen as reaction gas; (2) placing the lead selenide film in a horizontal tube furnace, and realizing high-temperature oxidation in normal-pressure pure oxygen; and (3) putting the lead selenide film into a vertical tube furnace, and realizing high-temperature iodination in a normal-pressure environment. The lead selenide thin film is prepared through the magnetron sputtering technology, compared with chemical bath deposition, the quality of the thin film is effectively improved, and large-area and high-uniformity thin film preparation is achieved; the magnetron sputtering film is subjected to high-temperature oxidation-iodination treatment, the magnetron sputtering film has excellent photoresponse to infrared light, and the sensitization technology is specific and clear and good in repeatability; the sensitized lead selenide thin film layer and the top electrode form the photoconductive detector, the specific detection rate of the device is 7.6 * 10 < 9 > Jones at 4.3 microns at the room temperature of a medium-wave infrared band, and the performance is excellent.

The invention relates to a combustion optimization and cryogenic separation-based carbon dioxide enrichment and hydrogen production synergy process for a combined device, which is characterized in that regeneration of a spent catalyst in a catalytic cracking device is changed into pure oxygen incomplete combustion, and circulating carbon dioxide is used for stabilizing fluidization and controlling tail combustion. And after the regenerated flue gas is subjected to deep purification and cryogenic separation, the part rich in carbon monoxide is fed into a medium-temperature change reactor of the steam hydrocarbon reforming device for hydrogen production, so that resource upgrading of catalytic coke is realized. And compressing and cooling the part rich in carbon dioxide to obtain about 98% of liquid phase product for subsequent application. According to the catalytic cracking device, only the regenerator needs to be adjusted, the deep purification and compression cryogenic separation unit is additionally arranged, the hydrogen production device can improve the treatment capacity of the medium-temperature change reactor, implementation is convenient, and the catalytic cracking device is suitable for new and old devices. The invention further relates to a system for carbon dioxide enrichment and hydrogen production synergy of the integrated device based on combustion optimization and cryogenic separation.

The utility model relates to a raw gas source upgrading system for an internal heating type vertical furnace. The raw gas source upgrading system comprises a dry distillation furnace, a carbon dioxide removal device and a pure oxygen preparation device, the device further comprises a first multi-stage mixer, a second multi-stage mixer, a gas sampling analysis tube and a gas component detector. Pure oxygen is adopted as a combustion improver, so that the content of nitrogen in the raw gas is greatly reduced, and the application scene of coal gasification production and deep processing of the internal heating type vertical furnace is expanded; the components of combustion-supporting gas, combustible gas and inert gas in mixed gas in a lattice wall of the dry distillation furnace are controlled by adopting double-circulation control of carbon dioxide and recirculated gas, the combustion intensity and the uniformity degree are strictly controlled under the condition that dry distillation heat supply is met, and scabbing and burning loss of a dry distillation furnace body are avoided.

The invention relates to the technical field of hydrogen production through water electrolysis, and provides an electrolytic hydrogen production system capable of reducing the lower limit of production load and a control method, the system comprises an electrolytic bath, a hydrogen separator, an oxygen separator and a pure oxygen module; a hydrogen side outlet is formed in the cathode side of the electrolytic bath, and the hydrogen separator is connected with the hydrogen side outlet; an oxygen side outlet is formed in the anode side of the electrolytic bath, and the oxygen separator is connected with the oxygen side outlet; the pure oxygen module is suitable for outputting high-purity oxygen into the oxygen separator, the high-purity oxygen is used for being mixed with initial oxygen at the oxygen side outlet, and under the condition that the hydrogen content in the initial oxygen does not meet the set condition, the hydrogen content in mixed oxygen at the outlet of the oxygen separator meets the set condition. Through the arrangement, the upper limit of the hydrogen content in the initial oxygen at the oxygen side outlet can be greatly improved, so that the lower limit of the production load of the electrolytic hydrogen production system is reduced, and the electrolytic hydrogen production system can fully adapt to wide rapid fluctuation of renewable energy treatment.

The invention discloses a continuous preparation and supply method of green hydrogen, and relates to the technical field of green hydrogen production. Comprising the following steps: (1) generating power by utilizing solar energy, wind energy or tidal energy, introducing the obtained electric energy into an electrolysis center through a line, electrolyzing water by the electrolysis center to produce green oxygen and green hydrogen, and enabling the green oxygen to enter a straw pure-oxygen gasification furnace for gasification reaction to obtain raw material gas; and (2) mixing the raw material gas obtained in the step (1) with green oxygen generated by an electrolysis center, and carrying out pure oxygen combustion in a gas-fired boiler to generate steam and high-purity CO2. According to the method disclosed by the invention, green hydrogen, CO and CO2 can be continuously and stably produced by adopting a straw gasification mode, and particularly, the green hydrogen effectively supplements the unstable green hydrogen production process of wind energy and solar energy, so that the organic combination and supplementation of renewable energy and straw energy are realized. The green hydrogen produced by the method can be used for synthesizing chemicals such as ammonia, methanol, methane and the like.

The invention provides a hyperbaric oxygen device for treating or improving senile hair abnormity and application and a method thereof.The hyperbaric oxygen device comprises a hyperbaric oxygen cabin and a cabin console, the pressure of the cabin console is set to be 1.0-3.0 ATA, the oxygen concentration is larger than or equal to 92%, and the time is 90-180 min; the method comprises the following steps: S1, placing a subject in a hyperbaric oxygen chamber; s2, high-purity oxygen with the oxygen purity larger than or equal to 99.99% is used for continuously ventilating the hyperbaric oxygen chamber till the concentration of replaced oxygen in the hyperbaric oxygen chamber is larger than or equal to 92%; s3, treating for 90-180 minutes under the pressure of 1.0-3.0 ATA, and flushing the interior of the cabin with pure oxygen for 5-10 seconds every 150-300 seconds during the treatment so as to ensure that the oxygen content in the cabin is stable; experiments prove that effective hyperbaric oxygen therapy can improve the problems of senile alopecia, senile poliosis, slow growth of senile hair, abnormal hair follicles and the like, solves the problem of lack of treatment of abnormal hair of old people at present, and can be applied to the fields of beauty treatment and anti-aging.

The invention discloses liquid hydrocarbon fuel combustion equipment and a supercritical carbon dioxide circulation system, the liquid hydrocarbon fuel combustion equipment comprises a nozzle, a combustion chamber and a rotational flow assembly, the rotational flow assembly comprises a first-stage pipe, a second-stage pipe, a first-stage cyclone, a second-stage cyclone and a third-stage cyclone, and the first-stage pipe and the second-stage pipe are both scaling venturi pipes. The supercritical carbon dioxide circulation system comprises fuel supply equipment, pure oxygen supply equipment and a circulation assembly, mixed gas of carbon dioxide and water vapor generated by combustion of the liquid hydrocarbon fuel combustion equipment is circulated through the circulation assembly to obtain high-purity carbon dioxide, and the high-purity carbon dioxide is divided into three paths to flow into a first-stage swirler, a second-stage swirler and a third-stage swirler; the carbon dioxide flowing into the second-stage cyclone is uniformly mixed with oxygen from pure oxygen supply equipment before flowing into the second-stage cyclone. The combustion ignition delay period and the mixing time can be prolonged, a standing vortex high-temperature rapid reaction area is formed, the problem that the combustion speed is low in the concentrated carbon dioxide atmosphere is solved, and the supercritical carbon dioxide circulation efficiency is improved.

A device and a method for producing hydrogen and byproduct oxygen by using green electricity electrolyzed water are provided. The device comprises an oxygen purifying system, a heat exchange system, an air separation compression and expansion system, an air separation rectification system and a liquid oxygen storage system. The method comprises the following steps: first, purifying oxygen prepared by electrolyzing water by green electricity to remove impurities such as hydrogen, carbon monoxide, carbon dioxide and water in the oxygen, then feeding the pure oxygen into the heat exchange system, performing heat exchange liquefaction to obtain liquid oxygen, coupling the liquid oxygen generated by rectification of the air separation rectification system, and obtaining pressurized oxygen through the heat exchange system and the air separation compression and expansion system.