24 results about "Carbon dioxide output" patented technology

The invention relates to the technical field of fuel cell energy recovery, and discloses a power generation device based on a high-temperature solid oxide fuel cell, a carbon dioxide output module comprises the high-temperature solid oxide fuel cell and a calcining furnace, gas fuel is introduced into an anode of the fuel cell, and output carbon dioxide is introduced into the calcining furnace; calcium carbonate is arranged in the calcining furnace; the carbon dioxide circulation module comprises a compressor, a gas storage tank, a carbonization furnace, an expansion machine, a first power generator and a first heat exchanger, carbon dioxide generated after calcium carbonate calcination is compressed by the compressor and then guided into the gas storage tank, the gas storage tank is communicated with the carbonization furnace, and calcium oxide is arranged in the carbonization furnace; residual carbon dioxide in the carbonization furnace is expanded by the expansion machine and then pushes the first power generator to generate power, the expansion machine is communicated with the first heat exchanger, and the first heat exchanger is communicated with the gas storage tank; energy required by calcination is derived from byproduct heat energy, and carbon dioxide is collected in a centralized manner and is used as a circulating material, so that carbon is prevented from being discharged into the atmosphere from the source.

The invention discloses a carbon dioxide heat pump power generation system which comprises an evaporator, a supercharger, a cooler, an expansion machine and a power generator. An outlet end of the evaporator is connected with an inlet end of the supercharger, an outlet end of the supercharger is connected with an inlet end of the cooler, an outlet end of the cooler is connected with an inlet end of the expansion machine, an outlet end of the expansion machine is connected with an inlet end of the evaporator, and a power output end of the expansion machine is connected with the generator. The carbon dioxide working medium discharged from the outlet end of the expansion machine is gas-liquid two-phase carbon dioxide with the temperature larger than-45 DEG C and the pressure ranging from 0.7 MPa to 6.5 MPa. The gas-liquid two-phase carbon dioxide absorbs heat after being conveyed to the evaporator and is heated to be in a gas state. Carbon dioxide output by the expansion machine is gas-liquid two-phase carbon dioxide with the temperature lower than that of renewable energy for providing heat, after the carbon dioxide is conveyed to the evaporator, the carbon dioxide can be heated to be in a gas state by absorbing low-temperature heat of the renewable energy, and application of the renewable energy is achieved through an ultralow-temperature working medium of the carbon dioxide.

This invention provides a method, system, and ventilator for calculating and graphically plotting carbon dioxide output and carbon dioxide ventilatory equivalent slope. The method includes: acquiring expiratory volume data (VE) and carbon dioxide partial pressure data (E) for the same respiratory cycle of the ventilator. CO2 Based on VE and E CO2 Plot volumetric and carbon dioxide curves; determine the respiratory cycle based on volumetric and carbon dioxide curves; determine the respiratory cycle based on vitamin E and vitamin E. CO2 This invention involves plotting a volumetric carbon dioxide graph for one respiratory cycle; calculating real-time carbon dioxide output data based on the volumetric carbon dioxide graph; calculating the carbon dioxide output and plotting a volumetric carbon dioxide output graph; and calculating the carbon dioxide ventilation equivalent slope based on the volumetric carbon dioxide output graph. The advantages of this invention are: it can obtain real-time carbon dioxide output curves, carbon dioxide output-volume graphs, and volumetric carbon dioxide output graphs, and obtain the carbon dioxide output and carbon dioxide ventilation equivalent slope.

The invention discloses an aquarium water-gas interface carbon dioxide gas monitoring linkage control device and method, and belongs to the technical field of aquarium related equipment. The aquarium water-gas interface carbon dioxide gas monitoring linkage control device comprises a container body with an opening in the lower portion, and the opening of the container body is immersed into a water body of an aquarium water-gas interface; the gas enrichment cavity collects carbon dioxide which is dissolved in a water body and escapes from a water-gas interface in the area, the carbon dioxide passes through the vent hole and is detected by the sensing detection unit through the waterproof breathable film to generate carbon dioxide concentration data, and the control unit calculates the carbon dioxide partial pressure slope and the carbon dioxide escape flux according to the carbon dioxide concentration data; the carbon dioxide output of the carbon dioxide supply assembly is controlled based on the carbon dioxide escape flux. The system can monitor carbon dioxide dissolution in a water body in real time, timely reflect the carbon dioxide concentration change dynamic state of the water body, automatically control the supply amount of carbon dioxide, ensure the stability of photosynthesis of green plants in the aquarium, and realize dynamic balance of the carbon dioxide dissolution amount of the water body.

The application discloses a carbon dioxide hydrogenation synthesis methanol system and method, relates to the technical field of methanol synthesis, and comprises a PEM electrolysis hydrogen production unit, a hydrogen pressure reducing valve, a direct air carbon capture unit, a carbon dioxide pressure reducing valve, a first buffer tank, a pressure increasing unit, a second buffer tank and a reaction unit. The hydrogen output end of the PEM electrolysis hydrogen production unit is connected with the input end of the hydrogen pressure reducing valve, the output end of the hydrogen pressure reducing valve is connected with the inlet of the first buffer tank, the carbon dioxide output end of the direct air carbon capture unit is connected with the input end of the carbon dioxide pressure reducing valve, the output end of the carbon dioxide pressure reducing valve is connected with the inlet of the first buffer tank, the outlet of the first buffer tank is connected with the input end of the pressure increasing unit, the output end of the pressure increasing unit is connected with the inlet of the second buffer tank, and the outlet of the second buffer tank is connected with the reaction unit. The application can realize the cooperation of stable pressure of a gas source, uniform mixing, efficient pressure increasing and stable reaction, reduces equipment investment and energy consumption, and is suitable for a green electricity driven operation scene.

The embodiment of the invention discloses an offshore oilfield CCUS pilot test technological process design method, and the method comprises the steps: determining a target operation mode of an offshore oilfield CCUS project according to a source-sink matching condition and an offshore facility capability condition; relevant parameters corresponding to the target operation mode are obtained, and a key function relation between the relevant parameters is established; optimizing the equipment parameters of the transport ship and the storage tank according to the key function relational expression, and determining the target single-ship transport capacity and the target storage tank volume; and according to the pump injection emergency blowout condition and the carbon dioxide output condition of the production affected well, the ground technological process of the offshore injection platform is set. According to the method, the transport capacity of the target single ship and the volume of the target storage tank can be conveniently determined in a function optimization mode, optimal design of pilot test corollary equipment is achieved, the conditions of pump injection emergency blowout, carbon dioxide output of a production effective well and the like are comprehensively considered, ground technological process design is completed, and effective matching of resources is achieved.

The detachable carbon dioxide injection control device comprises a butt joint pipe, an inlet of the butt joint pipe is used for being connected with an outlet of a carbon dioxide output device, and a first connecting ring is arranged at an outlet of the butt joint pipe; a second connecting ring is arranged at an inlet of the connecting pipe, the second connecting ring is detachably connected with the second connecting ring through an inserting device, at the locking position, the inserting device can fixedly connect the first connecting ring with the second connecting ring and enable the inlet of the connecting pipe to be connected with an outlet of the butt joint pipe, and at the unlocking device, the inserting device can unlock the butt joint pipe. The first connecting ring and the second connecting ring can be separated from each other; an inlet of the conveying pipe is connected with an outlet of the connecting pipe through a pressure reducing valve and a flow regulating valve, and an outlet of the conveying pipe is provided with a carbon dioxide diffuser; and the clamping device can be used for accommodating and clamping the carbon dioxide diffuser. Therefore, the detachable carbon dioxide injection control device can be conveniently and rapidly detached, the detaching process is simplified, and the working efficiency is improved.

The utility model relates to carbon dioxide supply equipment for cyanamide hydrolysis, which comprises a liquid carbon dioxide storage tank, a first constant-pressure pump, a gasification tank and a second constant-pressure pump, and a carbon dioxide outlet of the liquid carbon dioxide storage tank is communicated with an input end of the first constant-pressure pump through a first pipeline. The output end of the first constant pressure pump is communicated with the carbon dioxide inlet of the gasification tank through a second pipeline, the carbon dioxide outlet of the gasification tank is communicated with the input end of the second constant pressure pump through a third pipeline, and the output end of the second constant pressure pump is connected with a fourth pipeline used for conveying carbon dioxide into the cyanamide hydrolysis kettle; a pressure increasing valve, a first pressure sensor and a pressure release valve are sequentially installed on the fourth pipeline in the carbon dioxide output direction. According to the utility model, the stability and efficiency of carbon dioxide supply are improved, energy in the supply process is effectively utilized, and the utilization rate of energy resources is improved.

The invention relates to a coal combustion regulation and control method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining coal quality data of coal in a target coal batch before combustion and carbon emission data after combustion; inputting the coal quality data and the carbon emission data into a pre-constructed oxygen demand calculation model to calculate the oxygen demand of the to-be-detected coal in the target coal batch; and a corresponding combustion cooperative control strategy is matched based on the current combustion working condition of the target coal batch, and under the combustion cooperative control strategy, the air supply amount of an air feeder is adjusted through the oxygen demand, so that the excess air coefficient is within the preset interval. Therefore, the technical problems of monitoring input lag of the fixed carbon in the coal, carbon dioxide output quantification deficiency, insufficient dynamic regulation and control optimization capability and the like in related technologies are solved.

The invention provides a direct air carbon capture and purification method and device, and the method comprises the following steps: a solid adsorption section: capturing carbon dioxide in air through a solid adsorption method, and outputting intermediate gas with the carbon dioxide concentration of 5-20%; the intermediate gas storage section is used for compressing and storing the intermediate gas output by the solid adsorption method; in the liquid absorption section, the stored intermediate gas is used as a raw material, the intermediate gas is purified into a carbon dioxide product with the concentration not smaller than 99% through a liquid absorption method, and the stored intermediate gas is supplied to the liquid absorption section at the set gas discharging speed. According to the method, the trapping rate and the product quality can be guaranteed, meanwhile, the operation flexibility is improved, the service life is prolonged, AI large model prediction and control are assisted to adapt to the strong volatility and instability of green electricity, and the operation safety is guaranteed.

The invention provides an aviation fuel preparation system and method based on air compression energy storage, and the system comprises an air compression module which is used for compressing normal-pressure air into 2-4MPa medium-pressure carbon-containing air; the carbon dioxide capturing module is used for capturing and separating carbon dioxide in the medium-pressure carbon-containing air and outputting carbon dioxide gas and medium-pressure decarburized air; the decarburized air energy storage module receives the medium-pressure decarburized air and compresses the medium-pressure decarburized air into decarburized energy storage air of 6-15 MPa; the carbon-containing air energy storage module is used for receiving medium-pressure carbon-containing air and compressing the medium-pressure carbon-containing air into 6-15MPa carbon-containing energy storage air; the energy release module comprises a turbo expander and a power generator, the decarburized energy storage air or the carbon-containing energy storage air is released to drive the turbo expander to do work so as to drive the power generator to generate power, and low-pressure carbon-containing air formed after the pressure of the carbon-containing energy storage air is released is input into the carbon dioxide capture module; and the aviation fuel preparation module receives the carbon dioxide gas and utilizes electric energy to prepare aviation fuel. According to the invention, deep and efficient coupling of air compression energy storage and aviation fuel preparation can be realized.

An experimental system for a pulsed displacement and replacement of methane with carbon dioxide is provided. The experimental system includes a gas supply system, a pulse control system, a reservoir environment simulation system, a data acquisition and processing system and a tail gas recovery system, connected in sequence; and the carbon dioxide output from the gas supply system is converted into a pulsed gas through the pulse control system, the pulsed gas enters the reservoir environment simulation system to shorten a time of displacing and replacing methane with carbon dioxide, the experimental data of the reservoir environment simulation system is recorded in real time, analyzed and processed by the data acquisition and processing system, a dynamic displacement process is reflected in real time, and a relationship between a displacement evaluation indicator and a displacement time is clarified. The disclosure further provides an experimental evaluation method, using the above experimental system.

The invention discloses a double-temperature-zone carbon dioxide synchronous capture and regeneration system and method, and belongs to the technical field of gas separation and carbon capture. Carbon dioxide adsorption modules are arranged in double ventilation pipes correspondingly, and the current direction of a thermoelectric refrigerating unit is switched through a control module; the temperature difference end alternately heats one ventilation pipe to achieve carbon dioxide desorption, the other ventilation pipe is cooled and ventilated to achieve carbon dioxide adsorption, the active heat dissipation device can assist in cooling when the temperature exceeds a threshold value, and synchronous capture and regeneration of carbon dioxide in the double-temperature area are achieved. In the heating and cooling switching process of the first ventilation pipe and the second ventilation pipe, the heat storage device can reasonably utilize heat by absorbing heat and storing heat, the influence caused by thermal inertia is weakened, heating and cooling integration is achieved, the energy utilization rate is increased, and meanwhile the carbon dioxide output blank period is shortened.

The embodiment of the invention provides a new energy urea preparation system and a urea preparation method. The system comprises a new energy power generation system; the nitrogen-oxygen separation module is used for separating nitrogen and oxygen in the compressed air and storing the nitrogen and the oxygen in a nitrogen tank and a first oxygen tank; the electrolysis module electrolyzes water by using electric energy provided by the new energy power generation system to generate hydrogen and oxygen, and stores the hydrogen and oxygen in a hydrogen tank and a second oxygen tank; the ammonia gas preparation module is used for mixing nitrogen output by the nitrogen tank and hydrogen output by the hydrogen tank, the mixed gas is compressed by a second compressor and then enters a reaction tower to synthesize ammonia gas, and a heat exchanger recovers heat generated by the reaction tower and supplies the heat to a heat user; the carbon dioxide preparation module captures carbon dioxide and stores the carbon dioxide in a carbon dioxide tank; the urea preparation module is used for preparing urea according to the ammonia gas output by the ammonia gas tank and the carbon dioxide output by the carbon dioxide tank, and storing the urea in a urea storage tank; wherein oxygen output by the first oxygen tank and the second oxygen tank is supplied to an oxygen user.

The application provides a carbon dioxide liquefaction system, a liquid cargo system and a capture system, and belongs to the technical field of carbon capture; wherein the liquefaction system comprises a compression device, a liquefaction device and a storage tank device; the storage tank device receives liquid carbon dioxide output by the liquefaction device through a second liquid inlet end, and outputs gaseous carbon dioxide in the storage tank device to the compression device; the compression device re-compresses the gaseous carbon dioxide output by the storage tank device, and then inputs the liquefaction device for liquefaction and storage in the storage tank device; the application re-compresses and liquefies the gaseous carbon dioxide in the storage tank device into liquid carbon dioxide, solves the problem that part of the liquid carbon dioxide in the storage tank is gasified into gaseous carbon dioxide during the storage of the liquid carbon dioxide, causes the loss of the liquid carbon dioxide, and further reduces the liquefaction efficiency of the carbon dioxide, and avoids the loss of the liquid carbon dioxide.

The invention discloses a leakage detection method and device of a heat exchanger, a storage medium and computer equipment. The method comprises the steps that the gas flow output by a circular cooler, the output concentration of carbon dioxide output by a heat exchanger, the first volume concentration of the carbon dioxide output by the circular cooler and gas flow information input into a heat supplementing device are collected, and the second volume concentration of the carbon dioxide in air is obtained; the pre-calculated system air leakage amount and the wet basis proportion of each gas component in the coal gas are obtained; based on the system air leakage, the gas flow, the first volume concentration and the second volume concentration, the total amount of first carbon dioxide output by the circular cooler is calculated, and based on the wet basis proportion of each gas component, the total amount of second carbon dioxide output by the heat supplementing device is calculated; determining input concentration based on the first total carbon dioxide and the second total carbon dioxide, and determining whether the heat exchanger leaks or not based on the difference between the input concentration and the output concentration. The above mode can improve the precision of carbon dioxide leakage detection of the heat exchanger.

The embodiment of the invention provides a carbon circulation system of a thermal power plant. The carbon circulation system of the thermal power plant comprises a boiler, a flue gas treatment device, a carbon dioxide desorption device, a methanol synthesis device and an electrolytic hydrogen production device, the boiler is connected with the flue gas treatment device; the flue gas treatment device is connected with the carbon dioxide desorption device; the carbon dioxide desorption device is connected with the methanol synthesis device, the methanol synthesis device is connected with the electrolytic hydrogen production device, and the methanol synthesis device is used for preparing methanol by using hydrogen output by the electrolytic hydrogen production device and carbon dioxide output by the carbon dioxide desorption device; the methanol synthesis device is connected with the boiler, and the boiler combusts methanol output by the methanol synthesis device as a raw material. According to the carbon circulation system of the thermal power plant, carbon dioxide in flue gas is captured, then the carbon dioxide and hydrogen are synthesized into green fuel methanol, and then the green fuel methanol is combusted, so that carbon circulation is achieved, the carbon emission of the thermal power system is reduced, and the utilization rate of energy is increased.

This invention discloses a carbon dioxide gas monitoring and linkage control device and method for the water-air interface of an aquarium, belonging to the technical field of aquarium-related equipment. It includes a container with an open bottom, the opening of which is immersed in the water at the aquarium's water-air interface. A gas enrichment chamber collects carbon dioxide dissolved in the water and escaping from the water-air interface in that area. The carbon dioxide passes through a vent and a waterproof, breathable membrane, and is detected by a sensing unit to generate carbon dioxide concentration data. The control unit calculates the carbon dioxide partial pressure slope and carbon dioxide escape flux based on the carbon dioxide concentration data, and controls the carbon dioxide output of the carbon dioxide supply component based on the carbon dioxide escape flux. This invention enables real-time monitoring of carbon dioxide dissolution in the water, timely reflection of dynamic changes in carbon dioxide concentration, and automatic control of the carbon dioxide supply, ensuring stable photosynthesis of green plants in the aquarium and achieving a dynamic balance of dissolved carbon dioxide in the water.

The invention relates to a compressed carbon dioxide energy storage system running at constant pressure, and is suitable for the field of electric energy storage. The system comprises a flexible gas bin used for storing normal-temperature and normal-pressure carbon dioxide; the high-pressure liquid storage tank is used for storing gaseous carbon dioxide and liquid carbon dioxide at the same time; the charging assembly is used for pressurizing and cooling the normal-temperature and normal-pressure carbon dioxide output by the flexible gas bin by utilizing surplus electric power to form subcritical carbon dioxide and sending the subcritical carbon dioxide into the high-pressure liquid storage tank; the charging voltage stabilizing assembly is used for converting at least part of gaseous carbon dioxide in the high-pressure liquid storage tank into liquid carbon dioxide and then sending the liquid carbon dioxide back to the high-pressure liquid storage tank when the charging assembly works; the discharging assembly is used for doing work to generate power by using the subcritical carbon dioxide released by the high-pressure liquid storage tank and sending normal-temperature and normal-pressure carbon dioxide formed after doing work back to the flexible gas bin; and the discharging voltage stabilizing assembly is used for converting at least part of liquid carbon dioxide in the high-pressure liquid storage tank into gas and then sending the gas back to the high-pressure liquid storage tank when the discharging assembly works.

The utility model provides a device for mixing and conveying carbon dioxide in fresh water microalgae culture air. According to the device, an air compressor and a standby air compressor are installed on an installation frame, air filters are installed on the air compressor and the standby air compressor respectively, one-way gas valves are installed on pipelines, communicated with an air output pipe, of the air compressor and the standby air compressor respectively, and a condensate water inlet pipe and a condensate water outlet pipe are installed on a condenser respectively. The two ends of the condenser are communicated with the outlet end of the air output pipe and the inlet end of the mixed gas pipe respectively, a gas flow adjusting valve is installed on the carbon dioxide output pipe, one end of the carbon dioxide output pipe is communicated with the carbon dioxide storage tank, and the other end of the carbon dioxide output pipe is communicated with the mixed gas pipe. Carbon dioxide introduced by the device is mixed with air according to the amount of 1%-5% of the air content, the technical problem that a carbon source is needed in the growth process of microalgae is solved, and the device is reasonable in design, easy to operate, high in automation degree and suitable for most microalgae cultivation enterprises or research institutions.

The invention discloses a process system and method for preparing ethylene from green hydrogen coupled biomass. The system comprises a wind-solar power generation sub-unit, a water electrolysis sub-unit, a reverse water-gas conversion sub-unit, a methanol synthesis sub-unit, a methanol dehydration sub-unit, a dimethyl ether carbonylation unit, a methyl acetate hydrogenation unit and an ethanol dehydration unit which are connected in sequence. The biomass combustion subunit and the carbon dioxide trapping unit are connected with each other; and the carbon dioxide output end of the carbon dioxide capturing unit is connected with the input end of the reverse water gas conversion subunit. According to the process system and method for preparing ethylene from green hydrogen coupled biomass, green hydrogen and biomass energy are converted into high-value chemical ethylene, the whole-course carbon yield is high, energy is utilized to the maximum extent, and the process system and method have carbon emission reduction and economic potential.

The application provides a geothermal energy assisted combined cycle unit catalytic reforming system and method, wherein the geothermal energy assisted combined cycle unit catalytic reforming system comprises a catalytic reforming unit, a carbon dioxide capturing unit, a carbon dioxide storage unit, a low-temperature flue gas storage unit, a geothermal energy storage unit, a hot water storage unit and a high-temperature flue gas storage unit. The catalytic reforming unit is suitable for catalytic reforming reaction of natural gas and carbon dioxide. The carbon dioxide capturing unit is connected with a waste heat boiler. The carbon dioxide storage unit is connected with the carbon dioxide capturing unit and the catalytic reforming unit. The low-temperature flue gas storage unit is connected with the waste heat boiler. The geothermal energy storage unit is suitable for storing a medium heated by geothermal energy. The hot water storage unit is connected with the waste heat boiler. The high-temperature flue gas storage unit is connected with a gas turbine. Carbon dioxide output by the carbon dioxide storage unit can enter the catalytic reforming unit after heat exchange with low-temperature flue gas, the medium, hot water and high-temperature flue gas. According to the above technical scheme, the problem that the power generation efficiency of an existing combined cycle unit power generation system is reduced due to hydrogen production by catalytic reforming reaction can be solved.

The application provides a subcritical carbon dioxide supply system for chip cleaning. The subcritical carbon dioxide supply system for chip cleaning comprises a first conveying pipeline, a second conveying pipeline, a pressure regulating device and a heating device. The pressure regulating device and the heating device are located between the first conveying pipeline and the second conveying pipeline. Liquid carbon dioxide is conveyed in the first conveying pipeline, and gaseous carbon dioxide is conveyed in the second conveying pipeline. The first conveying pipeline comprises a first cooling section and a second cooling section which are sequentially connected. A diaphragm pump is arranged between the first cooling section and the second cooling section. The second conveying pipeline is electrically heated. The temperature of the gaseous carbon dioxide output by the second conveying pipeline is controlled to be 30-40 DEG C, and the pressure is controlled to be 51-59 barg. The subcritical carbon dioxide supply system for chip cleaning provided by the application ensures the stability of subcritical gas through the front-end cooling and rear-end heating mode, and facilitates stable conveying.

The application discloses a hydrogen production system and a hydrogen production method, and belongs to the technical field of hydrogen production. The hydrogen production system comprises a gas distribution unit, a reaction unit and a separation and purification unit. The gas distribution unit comprises a first supply pipeline, a second supply pipeline and a third supply pipeline. The reaction unit comprises a reforming reaction device and a shift reaction device. The first supply pipeline, the second supply pipeline and the third supply pipeline are communicated with the reforming reaction device. The reforming reaction device is configured to enable a hydrocarbon gas and water vapor and carbon dioxide to occur a reforming reaction and output hydrogen, carbon monoxide and unreacted raw materials. The shift reaction device is configured to enable water vapor and carbon monoxide to occur a shift reaction and output hydrogen, carbon dioxide and unreacted raw materials. The separation and purification unit is configured to at least separate hydrogen and carbon dioxide output by the shift reaction and at least output hydrogen and output carbon dioxide to the third supply pipeline. The application reuses carbon dioxide generated in the hydrogen production process, reduces carbon emission in the hydrogen production process and improves hydrogen production.