44 results about "Carbon dioxide output" patented technology

The utility model provides a carbon dioxide liquefaction system, a liquid cargo system and a carbon dioxide capture system, and belongs to the technical field of carbon capture. Wherein the liquefying system comprises a compression device, a liquefying device and a storage tank device, the storage tank device receives liquid carbon dioxide output by the liquefying device through a second liquid inlet end and outputs gaseous carbon dioxide in the storage tank device into the compression device, and the compression device recompresses the gaseous carbon dioxide output by the storage tank device and outputs the compressed gaseous carbon dioxide into the storage tank device. Then liquefying by the liquefying device, and inputting into the storage tank device for storage; the gaseous carbon dioxide in the storage tank device is compressed and liquefied into the liquid carbon dioxide again, and the problems that in the liquid carbon dioxide storage process of the storage tank, part of the liquid carbon dioxide in the storage tank is gasified into the gaseous carbon dioxide, loss of the liquid carbon dioxide is caused, and then the liquefaction efficiency of the carbon dioxide is reduced are solved; the loss of liquid carbon dioxide is avoided.

The invention provides an energy system for synthesizing green methanol based on biomass gasification and oxygen-enriched combustion, and belongs to the technical field of new energy. The energy system comprises an electrolysis system, an oxygen-enriched combustion system, a methanol synthesis system, a biomass gasification system and an ammonia-process carbon capture unit, an oxygen outlet of the electrolysis system is communicated with the oxygen-enriched combustion system, and a hydrogen outlet of the electrolysis system is communicated with the methanol synthesis system; oxygen generated by the electrolysis system is supplied to the biomass oxygen-enriched combustion system for supporting combustion, and hydrogen is supplied to the methanol synthesis system; a hydrogen outlet of the biomass gasification system is communicated with the methanol synthesis system; a carbon dioxide outlet of the oxygen-enriched combustion system is communicated with the methanol synthesis system through the ammonia-process carbon capture unit; the material energy flow of the energy system is adjusted through hydrogen generated by the biomass gasification system, and the adjusting flexibility of the energy system is improved; the concentration of carbon dioxide output by the oxygen-enriched combustion system is concentrated through the ammonia-process carbon capture unit, and the pretreatment requirement of methanol synthesis is met.

The invention relates to the technical field of air carbon capture, in particular to a direct air carbon capture system which comprises an adsorption unit and an absorption unit, the adsorption unit comprises at least three adsorption towers which are arranged in parallel, each adsorption tower comprises an adsorption time sequence, a heating regeneration time sequence and a cooling time sequence which are performed in sequence, and at the same moment, the adsorption time sequence and the heating regeneration time sequence are in parallel connection. At least one adsorption tower performs an adsorption time sequence, one adsorption tower performs a heating regeneration time sequence, one adsorption tower performs a cooling time sequence, and the absorption unit comprises an absorption tower and a regeneration tower and is used for further separating mixed gas treated by the adsorption unit. According to the invention, carbon dioxide is directly captured from air, through sequential control of the adsorption tower, the air introduction process does not need to be stopped at intervals, uninterrupted air carbon capture is realized, and through absorption and regeneration of the absorption tower and the regeneration tower of the absorption unit, carrier gas and carbon dioxide are separated, and a high-concentration CO2 product is output.

The invention provides a treadmill device for studying animal energy metabolism. The treadmill device comprises a treadmill body, a respiratory metabolism monitoring system, a data acquisition controller and upper computer software. The treadmill main body is made of an aluminum magnesium alloy material, and is equipped with a running belt with the thickness of 2mm and a servo motor belt signal feedback system. The respiratory metabolism monitoring system can monitor parameters such as oxygen consumption, carbon dioxide output, respiration exchange rate, heat and the like, and can monitor animal movement, respiration and weight information at the same time. The data acquisition controller can manually adjust the current, angle and the like of the treadmill and is provided with various interfaces. The upper computer software can monitor and display multiple data of animals in real time, has data analysis and mapping functions, and can export original data in Excel, txt and jpg formats. A gas mixing fan is arranged in the device, so that the gas sampling accuracy is ensured. The energy metabolism indexes can be monitored on line in real time in the animal running process, data instantaneity and accuracy are improved, environments with different exercise intensities are simulated, and experimental application scenes are expanded.

The invention belongs to the technical field of physical fitness detection, and discloses a riding exercise multi-dimensional physical fitness detection machine and a detection method thereof.The riding exercise multi-dimensional physical fitness detection machine comprises a support, a bicycle body fixed to the top of the support, and a physical fitness detection mechanism arranged on the bicycle body, an adjustable supporting rod and a supporting sleeve are fixedly arranged on a cross beam of the bicycle body, a telescopic hose is fixedly connected to the top of the adjustable supporting rod, and a communicated detection cover is fixedly arranged at one end of the telescopic hose. According to the invention, through the cooperation of the detection cover and the telescopic hose, during physical fitness detection, the detection cover is worn to realize the collection and detection of inhaled and exhaled gases, the oxygen consumption and carbon dioxide output in the exercise process are calculated, the respiratory quotient calculation is completed, and the evaluation of aerobic exercise ability is comprehensively realized; the physical fitness detection range is expanded, and more comprehensive physical fitness detection data are obtained.

The invention provides a combined heat and power methanol and hydrogen combined cycle preparation system, comprising: a hydrogen production system for preparing hydrogen by using renewable energy; a working medium input end of the methanol synthesis system is connected with a hydrogen output end of the hydrogen production system; a working medium input end of the gas combined power generation system is connected with an unreacted gas output end of the methanol synthesis system; the working medium input end of the methanol cracking system is connected with the methanol output end of the methanol synthesis system, and the carbon dioxide output end of the methanol cracking system is connected with the working medium input end of the methanol synthesis system. According to the methanol and hydrogen combined cycle preparation system with combined supply of heat and power disclosed by the invention, steam and unsynthesized gas in the preparation process of methanol are utilized, and the methanol cracking system is utilized to prepare hydrogen, so that energy gradient and full utilization of the system are realized, and the comprehensive efficiency of the system is effectively improved.

The invention relates to the technical field of carbon dioxide injection oil extraction, in particular to a method for calculating the amount of carbon dioxide produced by an oil well, which comprises the following steps of: calculating the oil sleeve annulus volume of the oil well in a carbon dioxide injection oil extraction test area based on the sleeve radius, the oil pipe radius and the height of a gas column in the oil sleeve annulus; calculating a first compression factor and a second compression factor corresponding to the first gas component based on the first wellhead temperature, the first annulus pressure, the second wellhead temperature and the second annulus pressure; on the basis of the second variable quantity and the testing duration, the instantaneous gas production rate of the carbon dioxide gas of the carbon dioxide injection oil extraction well in the testing process is calculated; the invention provides a method for calculating the carbon dioxide output of an oil well, which is suitable for oil reservoirs implementing carbon dioxide injection oil extraction technologies such as carbon dioxide flooding and carbon dioxide huff and puff, and can realize rapid calculation of the carbon dioxide injection oil extraction test area oil well output. And data support is provided for evaluating the carbon dioxide gas channeling condition of the oil well and calculating the carbon dioxide burying amount.

The utility model provides an energy storage system which comprises an energy storage pipeline and an energy release pipeline, the energy storage pipeline stores electric energy through the compression process and the phase change process of carbon dioxide, and the energy release pipeline releases the electric energy through the phase change process and the expansion process of the carbon dioxide. Specifically, the energy storage system comprises a first storage cavern and a second storage cavern, in the energy storage stage, gaseous carbon dioxide output by the first storage cavern enters the second storage cavern after compression, phase change and pressurization, and in the energy release stage, liquid carbon dioxide output by the second storage cavern returns to the first storage cavern after phase change and expansion power generation. Meanwhile, the power generation efficiency is also improved; according to the system, the cold energy in the energy storage stage is applied to the energy release stage by arranging the cold storage heat exchanger, arrangement of other cooling components is avoided, full utilization of energy is achieved, the manufacturing cost is saved, and the system is optimized.

To provide a carbon dioxide liquefaction system which can minimize energy required for liquefaction of carbon dioxide.SOLUTION: A carbon dioxide liquefaction system 1 has a liquefied carbon dioxide drum 10, a liquefied carbon dioxide circulation line, a liquefied carbon dioxide pump 20, a liquefied carbon dioxide cooler 30, an ejector 40 which is disposed in a flow in the rear of the liquefied carbon dioxide pump 20 in the liquefied carbon dioxide circulation line and functions with liquefied carbon dioxide output from the liquefied carbon dioxide pump 20 as a drive fluid and carbon dioxide containing gas as a suction fluid, a carbon dioxide containing gas receiving line 75 through which the ejector 40 receives the carbon dioxide containing gas, a liquefied carbon dioxide output line 78, a recycled gas line which reflux gas of a gas layer in the liquefied carbon dioxide drum 10 to the carbon dioxide containing gas receiving line 75, a carbon dioxide separation membrane 50 which is disposed in the recycled gas line and concentrates the carbon dioxide of the gas layer in the liquefied carbon dioxide drum 10, and a recycled gas flow control valve 83.SELECTED DRAWING: Figure 1

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 invention provides an ammonia gas turbine and self-condensation transcritical CO2 Rankine cycle combined system and an operation method thereof, and the system comprises a mixed fuel supply device which is suitable for preheating mixed fuel of air and ammonia gas to a combustible temperature and conveying the mixed fuel to a combustion chamber for combustion, the generated heat acts on the ammonia turbine to output high-temperature flue gas; the first heat exchange device is suitable for heating the carbon dioxide before entering the carbon dioxide turbine by using the high-temperature flue gas; the second heat exchange device is suitable for heating the carbon dioxide entering the first heat exchange device by using the carbon dioxide from the carbon dioxide turbine; the critical phase state conversion device is suitable for converting the carbon dioxide output by the second heat exchange device into liquid carbon dioxide and gaseous carbon dioxide, and condensing the gaseous carbon dioxide into the liquid carbon dioxide by using cold energy released by liquid ammonia vaporization; and the carbon dioxide pump is suitable for pumping the mixed liquid carbon dioxide into the first heat exchange device and the second heat exchange device for circulation.

The present invention relates to a constant current calibration device and method for a high-temperature and high-pressure supercritical CO2 flowmeter using a PVTt method, wherein the constant current calibration device comprises a carbon dioxide normal temperature liquid storage tank, an inlet compression pump, a temperature-adjustable standard gas storage tank, a pressure-stabilizing and reducing valve, a constant current boosting pump, a heater, a filter, a second pressure gauge, a second thermometer, a flowmeter to be tested, a desuperheater, a third thermometer, and a flow regulating valve, which are connected end to end in sequence. The present invention decomposes the pressurization and temperature-raising process of obtaining a supercritical carbon dioxide fluid, and obtains a supercritical carbon dioxide working fluid that meets the calibration requirements of the flowmeter to be tested through a combined structure of a pre-placed temperature-adjustable standard gas storage tank + a pressure-stabilizing and reducing valve through a pressure-compensating and temperature-raising method. The present invention realizes carbon dioxide flow calibration by applying the PVTt method to a temperature-adjustable standard gas storage tank, ensures that carbon dioxide is in a supercritical state through a temperature regulating module on the temperature-adjustable standard gas storage tank, and improves the carbon dioxide output quality of the gas storage tank to increase the calibration duration.

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.

The utility model discloses an apnea calling device which comprises a controller internally provided with a carbon dioxide monitor, an end-expiratory carbon dioxide detection module electrically connected with the carbon dioxide monitor is arranged at the position far away from the controller, one end of the end-expiratory carbon dioxide detection module is connected with a gas collecting hose, and the other end of the end-expiratory carbon dioxide detection module is connected with a gas collecting tube. The end, away from the end-expiratory carbon dioxide detection module, of the gas collection hose communicates with a multi-channel nasal oxygen pipe connector, and a loudspeaker electrically connected with the controller is further arranged at the position away from the controller. The end-expiratory carbon dioxide detection module can capture the numerical value and the output frequency of carbon dioxide introduced from the nasal oxygen tube connector in time through the air collecting hose, and once an abnormal signal occurs, such as carbon dioxide output pause, the controller can judge that a patient has a danger signal, and the loudspeaker is started in time to call and remind the patient through the loudspeaker; and meanwhile, the attention of medical staff can be attracted, so that the life is saved in time.

According to the industry multi-energy complementary carbon neutralization system, a natural energy conversion system and a thermal power station output electric energy to an electric energy supply system, and the electric energy supply system supplies the electric energy; the thermal power station outputs carbon dioxide to the coal chemical system through the carbon reuse system; the coal chemical industry system outputs an energetic solid and an energetic liquid to the steel and iron manufacturing system; the carbon reuse system comprises a carbon capture system and a carbon utilization system, and the carbon capture system captures carbon dioxide and conveys the carbon dioxide to the carbon utilization system; the carbon utilization system receives carbon dioxide of the thermal power station and the carbon capture system and outputs the carbon dioxide to the coal chemical system. A multi-energy complementary carbon neutralization mode is achieved, renewable energy sources are brought into the high-energy-consumption industry, and low-carbon transformation of the renewable energy sources is accelerated; and moreover, the use ratio of fossil energy is reduced, the energy utilization efficiency is improved, carbon dioxide emission is reduced, the energy utilization ratio of new energy in the high-energy-consumption industry is improved, and low carbonization of the emission side in the high-energy-consumption industry is achieved.

The invention provides a CCUS-EOR production well carbon dioxide output intelligent prediction method based on a KAN network, and the method comprises the steps: constructing a block training data set according to the production dynamics and geological parameters of a research block; preprocessing the block training data in the block training data set; performing model training based on the preprocessed block training data to obtain a carbon dioxide output intelligent prediction model, the carbon dioxide output intelligent prediction model comprising a gating neural network and a KAN network; and inputting geological parameter data of a to-be-predicted block into the carbon dioxide output intelligent prediction model for prediction to obtain a carbon dioxide output prediction result of the to-be-predicted block. According to the method, the accuracy of the prediction result of the carbon dioxide output is improved.

The present disclosure relates to the field of carbon capture technology, and in particular to a method, device, equipment and storage medium for coupling the start-stop and canning of carbon dioxide capture. The method comprises: determining the current amount of carbon dioxide captured in the carbon dioxide storage tank; if the current amount of carbon dioxide captured meets the carbon dioxide canning requirements, controlling the carbon dioxide compressor to stop compressing the carbon dioxide output from the regeneration tower into the carbon dioxide storage tank; if the current amount of carbon dioxide captured does not meet the carbon dioxide canning requirements, and the regeneration tower is in a non-working state, controlling the carbon dioxide compressor to compress the carbon dioxide escaping from the regeneration tower into the carbon dioxide storage tank until the carbon dioxide escaping from the regeneration tower does not meet the compression requirements. The present disclosure using the above scheme can couple the start-stop of the carbon capture system with the canning problem of carbon dioxide, achieve flexible and intelligent regulation, reduce equipment corrosion caused by carbon dioxide accumulation, and endanger personnel safety.

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 present disclosure relates to the field of carbon dioxide refining. The carbon dioxide refining system of the present disclosure includes an oxygen conveying device, a carbon dioxide conveying device, a reaction device, a first heater, a heat exchange device and a distillation device. The oxygen conveying device has an oxygen output port. The carbon dioxide conveying device has a carbon dioxide output port. The reaction device has a reaction inlet and a reaction outlet. The first heater is used to heat the mixed oxygen and carbon dioxide. The heat exchange device has a first heat exchange channel and a second heat exchange channel that can exchange heat. The inlet of the first heat exchange channel is connected to the carbon dioxide output port, and the outlet is interconnected with the oxygen output port and connected to the reaction inlet, and the inlet of the second heat exchange channel is connected to the reaction outlet. The distillation device is connected to the outlet of the second heat exchange channel, and is used for distilling and removing light component impurities and heavy component impurities in the heat-exchanged reaction material. The carbon dioxide refining system of the present disclosure consumes little energy during operation.

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.