15results about How to "Increase partial pressure" patented technology

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 utility model relates to a special vehicle for hydrogen storage, hydrogen transportation and dehydrogenation. The special vehicle mainly comprises a container and a transportation vehicle, wherein the container is provided with hydrogen storage, hydrogen transportation and dehydrogenation equipment; the equipment for storing, transporting and dehydrogenating the hydrogen is arranged in a container to form the container provided with the equipment for storing, transporting and dehydrogenating the hydrogen; the container is fixed on the chassis of the transport vehicle to form a whole body, so that the special vehicle for storing, transporting and dehydrogenating hydrogen is formed; the special vehicle disclosed by the utility model can be used for implementing a coordinated service of hydrogen storage, hydrogen transportation, dehydrogenation and hydrogen supply, has the advantages that the hydrogen storage capacity of a transportation vehicle is high, hydrogen transportation and dehydrogenation are carried out at normal pressure, hydrogen transportation at normal pressure is safe and reliable, potential safety hazards possibly occurring in transportation of hydrogen stored in a high-pressure bottle are overcome, and the special vehicle has good industrial practicability.

The present invention relates to the field of carbon capture technology, and provides a carbon dioxide adsorption system, including: a first compressor unit, a temperature swing adsorption unit and a vacuum pressure swing adsorption unit connected in sequence to the rear end of the raw gas inlet; a turbine expansion unit, whose inlet is connected to the first outlet of the vacuum pressure swing adsorption unit, and the turbine expansion unit is connected to the first compressor unit; a cold recovery unit, whose first inlet is connected to the outlet of the turbine expansion unit, whose second inlet is connected to the second outlet of the vacuum pressure swing adsorption unit, and whose cold recovery unit is provided with a decarbonated carbon dioxide raw material outlet; a first separator, whose inlet is connected to the first outlet of the cold recovery unit, whose first outlet is connected to the third inlet of the cold recovery unit, whose second outlet is connected to the inlet of the vacuum pressure swing adsorption unit, and whose second outlet is connected to the carbon dioxide liquid outlet. The present invention effectively improves the CO2 capture efficiency, reduces the equipment size, reduces the CO2 capture and liquefaction energy consumption, simplifies the process flow, and is suitable for large-scale application.

The present invention proposes a carbonation consolidation method for improving the strength of pellets. By changing the carbonation consolidation reaction system, the main reactants of the reaction process, calcium and CO2, are added to the raw balls in an ionic state. The carbonation reaction occurs in the ball-making process, and the reaction is in an ionic state. The reaction efficiency is much higher than the gas-solid reaction efficiency. The reaction is continued in depth during the drying and consolidation process to further improve the strength of the pellets, and ultimately improve the production efficiency of metallurgical solid waste carbonation consolidation and shorten the production cycle. Compared with ordinary carbonation consolidation, the pellets prepared by the process of the present invention have the characteristics of faster and more uniform carbonation reaction, higher pellet strength, and higher production efficiency.

The invention provides a rotary flow adjusting assembly and an irradiation device, the rotary flow adjusting assembly comprises a water inlet pipe, a flow channel is formed in the water inlet pipe, and a water inlet is formed in the side wall of the water inlet pipe; the flow guide part is arranged in the water inlet pipe, the flow guide part is of a hollow structure, a containing cavity is formed in the flow guide part, an upper flow guide opening and a lower flow guide opening are formed in the side wall of the flow guide part, the upper flow guide opening is communicated with the water inlet, and the lower flow guide opening is communicated with the flow channel; the valve element is rotationally arranged in the containing cavity and is also of a hollow structure, an adjusting cavity is formed in the valve element, and a pressure compensation opening and an adjusting opening are formed in the positions, opposite to the upper flow guide opening and the lower flow guide opening, in the side wall of the valve element correspondingly, so that the pressure compensation opening can be communicated with the upper flow guide opening when the valve element is rotated; meanwhile, the adjusting port can be communicated with the lower flow guide port; the passing areas of the water inlet, the upper flow guide opening and the pressure compensation opening are gradually decreased in the flow path direction, a sudden contraction and sudden expansion structure is formed, backflow can occur in the adjusting cavity, and therefore the flow resistance coefficient is increased.

The application discloses layered composite lead-free relaxor ferroelectric material and a preparation method thereof, and belongs to the technical field of piezoelectric ceramics, and overcomes the defects that the strain excited by the lead-free relaxor ferroelectric material in the prior art is small under a low driving electric field. The layered composite lead-free relaxor ferroelectric material comprises a first relaxor ferroelectric layer, a ferroelectric layer and a second relaxor ferroelectric layer arranged in sequence; and in the layered composite lead-free relaxor ferroelectric material, 0 < ferroelectric layer mass percentage < 30%. The application provides the layered composite lead-free relaxor ferroelectric material which has low driving electric field and large strain.

The invention relates to a device for improving fuel cell stack performance and an operation method thereof. The device comprises a fuel cell stack, a pressurizing cavity, an air supply pipeline, an air exhaust pipeline, an air stop valve, an air pressure reducing valve, a nitrogen supply pipeline, a nitrogen stop valve, a nitrogen pressure reducing valve, a hydrogen supply pipeline, a hydrogen exhaust pipeline, a hydrogen stop valve, a hydrogen pressure reducing valve, an air-nitrogen stop valve, a hydrogen-nitrogen stop valve and an air back pressure valve, and a hydrogen back pressure valve and a box body. The pressurizing cavity is filled with nitrogen with a certain pressure to balance the pressure of high-pressure air and hydrogen in the stack, so that the stable operation of a conventional stack under a high-pressure condition is met, and the damage of internal high pressure to the fuel cell stack is avoided. By increasing the pressure of air and hydrogen on the two sides of the membrane electrode, the oxygen partial pressure and diffusion efficiency are improved, the hydrogen storage pressure is adapted to fully convert the hydrogen pressure energy into electric energy, and the power density and efficiency of the fuel cell are improved.

The present application relates to the technical field of chemical equipment, and particularly relates to a reaction system for preparing butyraldehyde by propylene carbonylation, which comprises a carbonyl synthesis reactor, a condenser and a circulating pump, the top of the carbonyl synthesis reactor is connected with the gas inlet pipeline of the condenser, the top gas outlet of the condenser is provided with a tail gas discharge pipeline, the bottom liquid outlet of the condenser is connected with the upper pipeline of the carbonyl synthesis reactor; the bottom of the carbonyl synthesis reactor is connected with the liquid inlet of the circulating pump, the liquid outlet of the circulating pump is connected with the upper pipeline of the carbonyl synthesis reactor, and the liquid outlet of the circulating pump is also provided with a propylene adding pipeline on the pipeline connected with the upper part of the carbonyl synthesis reactor; the carbonyl synthesis reactor is also provided with a carbonyl reaction tail gas inlet pipeline and a reactant flow pipeline, and the carbonyl reaction tail gas inlet pipeline is provided with a synthesis gas inlet pipeline. The device can quickly reduce the carbon monoxide partial pressure.

A conductive layer (10), comprising a first TCO layer (11), a second TCO layer (12), a third TCO layer (13) and a fourth TCO layer (14) which are stacked. The first TCO layer (11) is prepared in a first atmosphere, and the first atmosphere is a mixed gas of argon and hydrogen; the second TCO layer (12) is prepared in a second atmosphere, the second atmosphere is a mixed gas of argon, hydrogen, and oxygen, a partial pressure gradient of hydrogen is reduced, and a partial pressure gradient of oxygen is increased; the third TCO layer (13) is prepared in a third atmosphere, and the third atmosphere is a mixed gas of argon and oxygen; the fourth TCO layer (14) is prepared in a fourth atmosphere, the fourth atmosphere is a mixed gas of argon and oxygen, and a partial pressure gradient of oxygen is decreased; the partial pressure of oxygen in the third atmosphere is not lower than the partial pressure of oxygen in the second atmosphere and the partial pressure of oxygen in the fourth atmosphere.

The present application provides a kind of gas deposition device and substrate processing method.The gas deposition device includes: reaction cavity, for carrying out gas deposition process;Substrate support assembly for carrying substrate, it is arranged below the reaction cavity;Gas shower head is oppositely arranged with the substrate support assembly, it is located above the reaction cavity, the substrate support assembly and the gas shower head between form a gas-filled space, the gas-filled space can be switched in high pressure state and low pressure state;The upper surface of the substrate support assembly has the center area of carrying substrate and the edge area around the center area, the edge area and the lower surface of the gas shower head opposite between during the gas deposition process, there is variable interval value, the interval value in the high pressure state is less than the interval value in the low pressure state.The present application can guarantee step coverage and improve processing efficiency.

The utility model discloses a separation device for short-process salt-containing wastewater, which relates to the technical field of water treatment equipment and comprises a water delivery pipeline, and a high-pressure pump is arranged on the water delivery pipeline and used for increasing the pressure of raw water in the water delivery pipeline. The filtering assembly is connected with the water conveying pipeline, and the filtering assembly is used for filtering raw water. Wherein a nanofiltration membrane is used as a filtering piece in the filtering assembly. According to the utility model, the high-pressure ozone dissolving technology is introduced, the pressure of the raw water is controlled, the dissolving concentration of the ozone is improved, the partial pressure of the ozone in a gas phase is improved under the high-pressure condition, and the concentration of the ozone dissolved in the raw water is improved to multiple times of that of the conventional ozone. The high-concentration ozone aqueous solution greatly improves the oxidative degradation effect of ozone on organic matters, so that organic pollutants in the wastewater can be more quickly and thoroughly removed.

The present invention discloses a method for carbon capture and utilization for compressed air energy storage, comprising: during redundant power generation period, compressing a fixed flow of air to obtain compressed air, when the compressed air pressure is not lower than the critical pressure of CO2, separating the compressed air into gas and liquid to obtain decarbonized high-pressure air and liquid CO2 and storing them separately, when the compressed air pressure is lower than the critical pressure of CO2, capturing and decarbonizing the compressed air through a CO2 adsorbent to obtain decarbonized low-pressure air for storage, desorbing the CO2 adsorbent after adsorbing CO2 to obtain gaseous CO2 for storage; during peak power consumption period, the decarbonized high-pressure air, liquid CO2 and decarbonized low-pressure air are expanded to generate power respectively, and the gaseous CO2 obtained after the liquid CO2 is expanded is stored. The present invention also discloses a system for carbon capture and utilization for compressed air energy storage. The present invention can improve the operating efficiency of the induced draft fan, the operating life of the system and the external output power during peak power consumption period.

The present invention relates to the technical field of vinyl acetate production, and specifically to a system and process for preparing vinyl acetate by ethylene oxidation, the system comprising two-stage reaction units or more than two-stage reaction units; wherein the two-stage reaction units comprise an initial reaction unit and a final reaction unit sequentially arranged along the material feeding direction; or, the more than two-stage reaction units comprise an initial reaction unit, at least one intermediate reaction unit and a final reaction unit sequentially arranged along the material feeding direction; the initial reaction unit, the intermediate reaction unit and the final reaction unit all comprise an evaporator, a reactor and a gas-liquid separator sequentially arranged along the material feeding direction. Compared with the prior art, the present invention adopts series and parallel processes, significantly improves conversion rate and economic benefits, effectively reduces equipment size, reduces equipment manufacturing difficulty, and reduces device investment.

The present invention relates to the field of coal mine automation technology, and proposes an automatic control system for coal slime flotation, including a flotation machine, and also including a clean coal ash automatic detection circuit, a slurry flow detection circuit, a slurry concentration detection circuit and a flow regulation circuit all connected to a main control chip, wherein the slurry flow detection circuit is used to detect the slurry flow injected into the flotation machine, the slurry concentration detection circuit is used to detect the slurry concentration injected into the flotation machine, the flow regulation circuit is used to adjust the dosage of a frother and a collector, and the clean coal ash automatic detection circuit includes a laser diode LD1, a photodiode D1, a switch tube Q2, a resistor R5, a resistor R1, a resistor R2 and a switch tube Q3, wherein the anode of the laser diode LD1 is connected to a power supply VCC, the cathode of the laser diode LD1 is connected to a first end of the switch tube Q2, and the second end of the switch tube Q2 is grounded through a resistor R5. Through the above technical scheme, the problem of low control accuracy of clean coal ash in the coal slime flotation system in the related art is solved.

The application discloses a nitric acid preparation system and method, and relates to the technical field of chemical industry, and can reduce tail gas emission and nitrogen oxide content in the tail gas during nitric acid preparation.