54 results about "Solar hydrogen" patented technology

The invention provides a polygeneration system and method for coupling wind-solar hydrogen production with CO2 capture and utilization, and relates to the technical field of green energy. The system comprises a renewable energy source driving subsystem used for providing green electric energy and preparing green hydrogen as an energy carrier and a synthetic raw material to be supplied to a multi-path utilization subsystem; the carbon source conversion and capture subsystem is used for receiving the biomass raw material, generating gasified synthesis gas and biomass charcoal through gasification reaction, and capturing and recycling CO2 in flue gas discharged by the system; the multi-path utilization subsystem is used for receiving H2, the gasified synthesis gas and CO2 and blending reaction components to realize synthesis of green methanol, conventional methanol and green ammonia; closed-loop circulation of carbon resources is formed among the subsystems through continuous conversion, capture and feedback paths of H2, CO2 and biomass charcoal. According to the scheme, efficient synergistic conversion of hydrogen and carbon resources and full-amount utilization of carbon elements can be achieved in regions with limited carbon sources.

The invention relates to the technical field of new energy system fault diagnosis, in particular to a solar cell coupling hydrogen production system fault diagnosis method based on big data, and the method comprises the steps: collecting photovoltaic, electrolytic cell and control unit multi-source heterogeneous data, and detecting the abnormality through an abnormality detection core model; matching and repairing by combining historical similar sections to obtain operation re-repairing data; a multi-scale expansion convolutional neural network is adopted to extract time sequence fault features, a backbone network is adopted to extract infrared image high-order features, and heterogeneous aggregation features are obtained through fusion of a spiking neuron model and virtual dendritic branches; constructing dynamic graph nodes and attributes according to features and components, and integrating multiple indexes to fit a causal association strength weight; and multi-link diagnosis: obtaining a fault type through a quantum annealing algorithm, positioning a fault through causal discovery and a virtual dry prediction algorithm, integrating and reporting to a server. The method can improve the fault diagnosis accuracy and real-time performance, and is suitable for fault monitoring of the solar hydrogen production system.

The invention relates to the technical field of renewable energy source and process industrial intelligent control, and discloses a full-process optimization method and system for synthesizing ammonia through wind-solar hydrogen production, which can realize full-process collaboration and self-adaption to wind-solar fluctuation, and can guarantee system safety and economy in long-term operation. According to the scheme, the method comprises the steps that running state data of a wind-solar power generation system, a hydrogen production system, a hydrogen storage system and a synthetic ammonia system are collected in real time, and the collected data are preprocessed; establishing a device-level adaptive boundary model, and calculating a dynamic safe operation boundary of the key device; inputting wind-solar power prediction of a future time domain, performing rolling optimization based on the multi-objective optimization model according to constraint conditions, and generating load setting instructions of each system; and executing the load setting instruction, collecting real response data of the system, comparing a deviation between a real response and a predicted response, calculating a multi-dimensional deviation index, and when the deviation exceeds a set threshold value, performing feedback calibration on the equipment-level adaptive boundary model.

The invention discloses a wind-solar hydrogen production system capacity configuration method based on dynamic ant colony clustering and a main kitchen optimization algorithm, and relates to the field of comprehensive energy, and the method comprises the steps: obtaining wind-solar output data, and carrying out the clustering processing of the wind-solar output data through employing a dyeing clustering algorithm of an ant colony path-finding mechanism, and obtaining a wind-solar combined output combination set; based on the wind-solar combined output combination set and a pre-obtained electrolytic cell response feature set, an electrolytic cell combination operation mode is constructed, and an electrolytic cell power distribution model is constructed according to the electrolytic cell combination operation mode in combination with the output fluctuation rate and the output coincidence rate; and constructing a capacity configuration multi-target optimization model according to a preset hydrogen production condition in combination with the electrolytic cell power distribution model, and solving the capacity configuration multi-target optimization model by using a multi-target main-kitchen optimization algorithm with a hybrid dominant relationship to obtain a capacity configuration optimal solution. According to the method, the adaptability to complex resource distribution and engineering constraints is remarkably improved through dyeing clustering.

The invention provides the preparation method of the efficient photocatalyst which is simple and convenient, does not contain noble metals or toxic metals and does not need a cocatalyst. In the invention, a strategy for synergistically improving the catalytic performance by regulating and controlling sulfur vacancies and doping copper ions is provided, zinc indium sulfide (ZIS) is selected as a substrate material, the content of sulfur atoms is increased in the synthesis process through a solvothermal method to introduce the vacancies, and Cu (NO) is synchronously added to introduce Cu, so that the catalytic performance is improved. The Cin-VZIS catalyst is successfully prepared (n is a doping proportion relative to Zn). A TEOA aqueous solution is used as a sacrificial agent to carry out photocatalytic hydrogen production reaction, the synergistic effect of the two modification modes can significantly improve the performance of the catalyst, and when the copper doping ratio is 1.5%, the catalytic activity reaches the highest and is 1.799 mmol.g.h, which is 7.5 times of that of an original ZIS catalyst. The prepared catalyst is high in activity and good in stability, and a new way is provided for developing efficient and stable solar hydrogen production materials.

The invention discloses a wind and light hydrogen storage ammonia alcohol capacity configuration method, device and equipment and a medium, and relates to the technical field of new energy, and the method comprises the steps: obtaining multi-dimensional input data including historical meteorological data, system operation and supply and demand state data, and wind and light power and grid-connected regulation reference data; inputting the multi-dimensional input data into a pre-training capacity configuration model to predict and analyze the multi-dimensional input data through the pre-training capacity configuration model so as to output a full-cycle capacity configuration scheme of the wind-solar hydrogen storage ammonia-alcohol system; wherein the pre-trained capacity configuration model is a second-hour-season three-time-domain coordinated capacity configuration and path regulation and control structure, and efficient coordinated control of stable regulation and control of electrolytic cell power, intelligent switching of synthetic paths and seasonal resource allocation is realized through an output full-period capacity configuration scheme.

The invention discloses a wind-solar hydrogen storage and charging multi-energy complementary integrated system and a cooperative control method thereof, and belongs to the technical field of supervision control and data acquisition, and the method comprises the following steps: firstly detecting the fluctuation index of the output power of a power generation side, and starting the absorption of a super capacitor and the PID adjustment buffering of a lithium battery; and evaluating the state of the electrolytic cell, and determining whether or not and how to accurately adjust the feed water flow according to the water content and humidity distribution variance. And finally responding to the load change rate. According to the wind and light hydrogen storage and charging multi-energy complementary cooperative control method provided by the invention, accurate management of all working conditions of the electrolytic cell is realized through a three-step cooperative closed-loop control logic. A complete chain of'prevention-response-optimization 'is formed from source protection of power fluctuation on a power generation side, dynamic correction of the state of the electrolytic cell and graded adjustment of load change. The core value of the method lies in that through multi-parameter linkage, the damage risk of the proton exchange membrane is reduced to the maximum extent, and efficient and stable operation of the electrolytic cell is guaranteed.

The invention discloses a flexible ammonia synthesis system capacity configuration optimization method based on wind-solar combined power generation. Comprising the following steps: constructing a wind-solar hydrogen production coupling ammonia synthesis system; determining flexible boundary parameters of modules for producing hydrogen by electrolyzing water, synthesizing ammonia and the like; building an energy mass flow model of the flexible system under variable working conditions by utilizing dynamic analogue simulation of coupling of water electrolysis hydrogen production and ammonia synthesis; and by taking the minimum leveling production cost as a target parameter, constructing a wind-solar hydrogen production coupling ammonia synthesis system capacity configuration optimization model, and solving a target function to obtain wind-solar installed capacity, energy storage, the scale of hydrogen storage equipment, rated power of an electrolytic bath and ammonia synthesis equipment, and the optimal leveling production cost of ammonia. The universal capacity configuration optimization method of the green ammonia synthesis system for the flexible process is realized, the leveling production cost of the green ammonia is reduced, and the method is suitable for guiding the construction, popularization and application of an actual industrial green ammonia synthesis system.

The invention discloses a multi-electrolytic cell power distribution method and device for an off-grid type wind-solar hydrogen production system. The method comprises the steps that a model of the off-grid type wind-solar hydrogen production system is established; establishing a system operation constraint condition; determining an optimization objective function; and an optimization algorithm is applied, and according to the model of the off-grid type wind and light hydrogen production system, the system operation constraint condition and the optimization target, an optimal power distribution scheme of each electrolytic cell is solved. By means of the scheme, the potential safety hazard of explosion possibly caused by too high hydrogen concentration in oxygen can be solved, it is ensured that the system operates within the safety range by controlling the operation power and duration, and the accident risk is reduced. Meanwhile, the power distribution strategy not only considers technical feasibility, but also pays more attention to economy, and is beneficial to improving the profitability of the whole system. In addition, on the premise of meeting various constraints, unstable wind energy and solar energy resources can be more effectively utilized for hydrogen production, and the absorption proportion of renewable energy sources is increased.

The invention provides a two-dimensional material solar hydrogen production efficiency prediction method and device based on machine learning. The method comprises the following steps: reading a non-magnetic hexagonal crystal system single-layer material in a database to construct an initial data set; for samples with complete labels in the data set, training a single-layer material band edge position prediction model by adopting a feature engineering and gradient boosting decision tree algorithm; next, predicting and complementing samples with missing labels by using the trained model so as to generate a complete data set and further construct heterojunction double layers; carrying out data enhancement on a heterojunction sample of literature investigation through a CVAE-GAN hybrid architecture, and optimizing a feature vector; then training the new model by adopting a random forest algorithm to realize accurate prediction of the band edge position of the previously constructed heterojunction; and finally, the heterojunction type is judged in combination with a work function and a band edge position, the solar hydrogen production efficiency is calculated in batches by utilizing a program, and a high-efficiency heterojunction material is screened out.

The invention discloses a titanium dioxide nanorod / dissimilar metal MOFs heterojunction material and a preparation method and application thereof, and belongs to the technical field of photoelectrochemistry seawater hydrogen production. Soluble nickel salt, soluble cadmium salt or soluble cobalt salt and ammonium molybdate are adopted as metal sources, spherical dissimilar metal MOFs grow on the surface of a TiO2 nanorod in situ, and the TiO2 nanorod / dissimilar metal MOFs heterojunction material is prepared. According to the present invention, the oxygen deficiency-regulated dissimilar metal MOFs material (i.e., the titanium dioxide nanorod / dissimilar metal MOFs heterojunction material) is obtained through subsequent acid etching and annealing treatment, the material is subjected to in-situ reconstruction during the OER process to spontaneously form the active hydroxide (NiOOH) of anion protection (MoO4 < 2->), and the excellent stability is represented; only small Faraday efficiency loss (1.2-2.3%) occurs in a high chloride ion environment (3.5 wt%-7wt% of NaCl), and an extensible path is provided for industrial-scale solar hydrogen production by using seawater.

The application provides a multi-scenario mode wind-solar hydrogen production energy system construction method, device and equipment, relates to the new energy hydrogen production technical field, and the multi-scenario mode wind-solar hydrogen production energy system construction method comprises the following steps: obtaining component parameters of a unit in a wind-solar hydrogen production energy system, wind-solar environmental data of a planned construction site of the wind-solar hydrogen production energy system and a scenario mode of operation of the wind-solar hydrogen production energy system; determining an operation strategy of the wind-solar hydrogen production energy system according to the scenario mode; generating a target function under different operation strategies according to the component parameters and the wind-solar environmental data; and determining the capacity of each unit in the wind-solar hydrogen production energy system under different operation strategies according to the target function. The application completes the construction and optimization of the wind-solar hydrogen production energy system.

The invention relates to the technical field of energy scheduling, in particular to a scheduling method and system for an off-grid wind-solar hydrogen production and biomass gasification methanol production system, and the method comprises the steps: obtaining system prediction data; judging whether an extreme weather event occurs or not based on the environment temperature predicted value; dynamically calculating the thermal power for maintaining the lowest safe activity of the synthetic tower catalyst; taking the maximum methanol output value as a scheduling target, constructing a target function, and generating an optimal scheduling plan of a specific period in the future; executing the optimal scheduling plan; according to the method, a prediction-based dynamic guaranteed threshold model is introduced; according to the method, the future environment temperature is analyzed in real time, a catalyst activity attenuation kinetic model is combined, and the thermal power required for maintaining the lowest safe activity of the synthetic tower catalyst is dynamically calculated; according to the method, the energy scheduling decision is improved from passive response to active defense, absolute safety of chemical production core equipment under extreme conditions is ensured, and huge loss caused by non-planned shutdown is effectively avoided.

This invention discloses a method for optimizing the operation of a wind-solar hydrogen production system based on hierarchical verification deep reinforcement learning, belonging to the field of new energy hydrogen production system operation optimization technology. The method includes: collecting environmental and equipment information to construct a system state vector; establishing a multi-agent framework based on the soft actor-critic algorithm, defining the energy storage battery and electrolyzer as independent agents, and outputting control commands through continuous-discrete hybrid actions. Before execution, a Level I safety verification is performed, and the state is updated after passing; a fusion reward is calculated based on the new state using a global-local fusion reward mechanism. State samples are stored in an experience buffer for network parameter updates. During training, a Level II model performance verification is periodically performed, and qualified models are included in the candidate set; after training, a Level III deployment verification is performed, and the optimal model is selected for use in the actual system. This invention improves the operational efficiency, equipment lifespan, and system deployment reliability of wind-solar hydrogen production systems under fluctuating environments.

This invention discloses a photothermal catalyst based on Ni supported on porous carbon derived from tea residue and its application in hydrogen production from waste natural biomass. The catalyst preparation method includes tea residue raw material pretreatment, preparation of tea residue-derived carbon materials, KOH chemical activation, acid washing and water washing followed by drying, then impregnation and loading with a nickel precursor, and finally reduction in a hydrogen atmosphere to obtain the catalyst. This catalyst can catalyze the biomass steam reforming hydrogen production reaction under focused sunlight irradiation. This invention organically couples the resource utilization of tea residue solid waste with the solar photothermal-driven biomass reforming hydrogen production process, achieving synergistic effects of high-value utilization of agricultural and forestry waste and clean solar hydrogen production. The process is simple, the raw materials are readily available, and it is environmentally friendly, possessing good prospects for industrial application.

The application discloses a solar energy conversion system and an operation method thereof, and belongs to the technical field of renewable energy utilization. The system comprises a hydrogen and oxygen preparation and storage unit, a combustion and power generation unit and a flue gas treatment unit. A solar light condensation high-temperature heat collector supplies heat for a hydrogen preparation device to decompose water to prepare hydrogen and oxygen, the hydrogen and oxygen are stored after being cooled and compressed, and are sent into a combustion chamber to be mixed with circulating carbon dioxide to realize oxygen-rich combustion, supercritical carbon dioxide-water vapor flue gas is generated to drive a gas turbine to generate power, the flue gas is subjected to waste heat recovery and condensation separation, water is returned to the hydrogen preparation in a closed loop, and the pressurized carbon dioxide is branched to control the temperature of the combustion chamber and the gas turbine, so that full circulation of the working medium and cascade heat exchange are realized. The solar hydrogen preparation and supercritical carbon dioxide circulation are deeply integrated, energy utilization rate is high, and operation is stable. The application can solve problems of intermittency of solar energy, low efficiency of a traditional system, large thermal pollution and the like, is energy-saving and environment-friendly, and is good in economy.

The application discloses a hydrogen storage-hydrogen transmission rolling optimization scheduling method and system for wind-solar hydrogen production. The method constructs a dynamic model containing storage tank material balance, pressure state and hydrogen transmission capacity constraints, and supports time-varying working condition description of effective volume of the storage tank. In order to avoid optimization infeasibility, a total amount feasibility pre-check based on hydrogen production prediction, maximum hydrogen transmission capacity and hydrogen storage capacity of the storage tank is proposed, which is used for identifying over-tank risk in advance and triggering scheduling degradation. In view of the amplitude and frequency requirements of hydrogen transmission change of the downstream hydrogen utilization process, the method introduces integer variables and sliding windows to construct minimum adjustment frequency and minimum adjustment interval constraints. Based on real-time storage tank data and hydrogen production prediction, the method uses a mixed integer optimization algorithm to solve the optimal hydrogen transmission strategy in the rolling prediction time domain, and only executes the first step instruction of the current period, so that the rapid response to operation is realized. The application can improve the pressure safety margin of the storage tank, reduce the system adjustment frequency and enhance the operation stability of wind-solar hydrogen production.

The invention discloses a near-zero-emission system and process for preparing ethylene glycol by coupling wind, light and gas, and belongs to the technical field of green new energy. The system comprises a wind-solar hydrogen production system, a chemical looping system, a combined heat and power generation system, a carbon sequestration system, an ethylene glycol synthesis and separation system and a fuel cell peak regulation system, the wind-light hydrogen production system conveys hydrogen to the ethylene glycol synthesis and separation system through a pipeline; the wind-solar hydrogen production system is connected with the fuel cell peak regulation system through an oxygen pipeline; the chemical chain system is respectively communicated with the ethylene glycol synthesis and separation system, the combined heat and power generation system and the carbon sequestration system through pipelines; the combined heat and power generation system provides electric power and steam for the ethylene glycol synthesis and separation system and provides residual electric power for the wind-solar hydrogen production system; and the fuel cell peak regulation system and the combined heat and power generation system respectively supply power to the wind-solar hydrogen production system through the power bus. By means of the synergistic effect of the systems, near-zero emission is achieved.

The invention provides a method and a device for calculating a double-sided single-layer solar hydrogen production efficiency limit. The method comprises the following steps: reading vacuum energy level difference data of a double-sided material input by a user; inputting the vacuum energy level difference data into a solar hydrogen production efficiency limit formula for calculation to obtain a solar hydrogen production efficiency limit value of the double-sided material; according to the method, high-precision and reliable calculation is realized by deducing a solar hydrogen production efficiency limit formula of a two-dimensional double-sided single-layer material in combination with vacuum energy level difference data input by a user, and comprehensive performance analysis and optimization suggestions are provided by traversing a plurality of physical property parameter data to draw an efficiency analysis map. Meanwhile, the user operation process is simplified, the analysis efficiency is improved, and the scientificity, practicability and user experience of solar hydrogen production efficiency evaluation and optimization are remarkably improved.

The invention discloses an optimal configuration method for a wind-solar hydrogen storage isolated network system containing network construction type energy storage, and belongs to the field of isolated network power system configuration. The method comprises the steps that an equipment model of the wind and light hydrogen storage isolated network system is established, the equipment model comprises a wind generating set model, a photovoltaic generating set model, a network construction type energy storage model and a hydrogen production electrolytic cell model, and the wind generating set model and the network construction type energy storage model are inertia supporting sources of the system. According to the method, the inertia level of a system is quantified based on generalized kinetic energy, a system frequency safety index is constructed accordingly, and the index serves as a constraint condition to be introduced into a double-layer optimization configuration model comprising an outer-layer planning model with the maximum annual total income as a target and an inner-layer operation model with operation safety and economical efficiency as targets. On the premise that the frequency safety requirement of the system is met, reasonable configuration of the net-forming type energy storage and hydrogen production equipment is achieved, and the operation stability and the overall economical efficiency of the wind and light hydrogen storage isolated net system are improved.

The invention provides a wind and light hydrogen production system double-layer optimization method based on an improved genetic algorithm (IGA) and an optimal efficiency interval of an electrolytic cell. Aiming at the problem of insufficient economy of the wind-solar hydrogen production system, the double-layer optimization problem of the wind-solar hydrogen production system is established. Wherein the upper layer problem is electrolytic cell and storage battery capacity configuration optimization considering maximization of the internal yield rate, and the lower layer problem is electrolytic cell starting and stopping and energy storage charging and discharging dynamic scheduling based on the upper layer configuration result. Besides, an improved genetic algorithm (IGA) is further provided for an upper-layer optimization problem, and by introducing abnormal value screening, the stability and convergence speed of genetic manipulation are remarkably enhanced; in order to solve the problem of the lower layer, a method for determining the dynamic response characteristics of the hydrogen production efficiency and the per-unit power value is designed, and intelligent scheduling is realized by adopting a CPLEX mathematical programming solver. Compared with a traditional method, the method has the advantages that the net present value of the system is increased by 15.6%, the annual operation cost is increased by 34.4%, and the overall economical efficiency of the system is effectively improved.

The invention provides a wind-solar hydrogen production intelligent control system, and relates to the technical field of electric power, and the system comprises an energy input module which is used for collecting and obtaining a hydrogen production power prediction sequence in real time; the control instruction module is used for obtaining a maximum absorption electrolytic bath state prediction table through the hydrogen production power prediction sequence by utilizing a maximum absorption algorithm; utilizing a minimum action algorithm to obtain a minimum action electrolytic bath state prediction table through the hydrogen production power prediction sequence; obtaining a performance index through the maximum consumption expected income and the minimum action expected income; using the maximum consumption electrolytic bath state prediction table or the minimum action electrolytic bath state prediction table as a target electrolytic bath state prediction table through performance indexes; and the energy conversion and storage module is used for controlling hydrogen conversion and storage according to the target electrolytic cell state prediction table. According to the invention, the load distribution efficiency is improved, and meanwhile, a wind-solar hydrogen production unified scheduling mechanism is realized.

The utility model discloses a kind of hydrogen storage devices for solar hydrogen production belongs to hydrogen storage device technical field.This kind of hydrogen storage devices for solar hydrogen production, including installation component, storage component and plugging component, storage component is used to store hydrogen, plugging component is used to plugging storage component, plugging component includes communicating pipe, the side of communicating pipe is equipped with communicating plate, communicating plate is installed with communicating seat on the side away from communicating pipe, the inside of communicating seat is equipped with conical chamber, conical chamber is equipped with magnetic ball in the inside, first electromagnet is installed on the inner wall of one end away from communicating plate of conical chamber, and magnetic ball is magnetically attracted between first electromagnet, the bottom of communicating seat is communicated with hydrogen gas inlet pipe at first electromagnet, storage component includes hydrogen storage tank, the bottom of hydrogen storage tank is equipped with inlet hole, flowmeter is installed on the bottom of hydrogen storage tank at inlet hole, and flowmeter is fixedly connected with the upper end of communicating pipe on one end away from hydrogen storage tank.

The invention discloses an adjustable solar hydrogen and electricity combined supply system and method. The system comprises a photocatalytic suspension storage tank, a photocatalytic reaction tube, a simulation light source, a photovoltaic device, a battery, an angle adjusting mechanism and an electric field adjusting mechanism. The angle adjusting mechanism comprises a fixed supporting point, a horizontal sliding rod and a supporting rod, the supporting rod is fixed on the whole system, and the horizontal sliding rod is fixedly connected with the condenser through the fixed supporting point; the horizontal sliding rod moves left and right along the supporting rod to adjust the inclination angle of the condenser, so that the hydrogen electricity generation process is adjusted; the electric field adjusting mechanism comprises one or more groups of electric field generators which are symmetrical up and down and are arranged on the side wall of the photocatalytic reaction tube, and the hydrogen electricity generation process is adjusted by changing the electric field intensity. The light radiation direction and the light radiation intensity are controlled by adjusting the condenser, and the reaction state is controlled by adjusting the electric field generator, so that the hydrogen electricity generation process is adjusted.

This invention belongs to the field of green hydrogen and ammonia technology, specifically disclosing a skid-mounted flexible wind-solar hydrogen and ammonia system and its operation control method. The system includes a wind-solar power generation system, an alkaline and PEM hydrogen production subsystem, a low-pressure hydrogen storage tank, several skid-mounted nitrogen production subsystems, several skid-mounted ammonia synthesis subsystems, and a control unit. Based on the traditional automatic regulation and control of ammonia synthesis, this invention combines nitrogen production and ammonia synthesis in a skid-mounted configuration, enhancing the system's regulatory flexibility and significantly improving the response speed and operational elasticity of the ammonia synthesis process under various new energy power generation conditions. By using the by-product steam from ammonia synthesis to heat the standby equipment for hydrogen production and ammonia synthesis, the problems of slow temperature rise and slow load adjustment under corresponding loads can be greatly shortened, improving its ability to quickly match load fluctuations with upstream new energy power. Furthermore, this system, combined with energy storage, is expected to achieve off-grid or weakly grid-connected green hydrogen and ammonia production.

The invention discloses equipment and a process for synthesizing methanol by solar hydrogen production, the equipment comprises a base fixed on the ground, two support plates are symmetrically arranged on the base, and flow reactors are symmetrically arranged between the two support plates and located at two ends of the support plates; a secondary reflector is arranged on one side, close to the middle position of the supporting plate, of each flow reactor; a groove type condenser parallel to the flow reactor is arranged outside the base; a symmetrical and modularized double-reactor structure is adopted, the two flow reactors with the same capture-desorption-conversion function are subjected to day-night role alternation, CO2 conversion in the daytime and CO2 capture at night through a rotating mechanism, and the problem that the CO2 capture rate and the CO2 conversion rate are not matched is successfully solved in a cyclic operation mode; a secondary reflector is further adopted, heat flux of the upper surface and the lower surface of the absorption tube is effectively balanced, and therefore the photo-thermal performance and the operation reliability of the groove type condenser are improved.

The invention belongs to the technical field of waste heat utilization, and discloses a wind-solar hydrogen production ammonia-alcohol waste heat gradient utilization device which comprises a treatment seat, three gradient guide cylinders are arranged in the treatment seat, and the three gradient guide cylinders are respectively a high-heat guide cylinder, a medium-heat guide cylinder and a low-heat guide cylinder which are distributed from top to bottom. According to the invention, through grading distribution of different temperatures, waste heat fluids in different temperature intervals are respectively guided into each step guide cylinder, and the internal separation treatment and the heat exchange treatment pipe are matched, so that on one hand, the purified waste heat fluids are directly guided to other process parts of the system for direct waste heat utilization, and on the other hand, the waste heat utilization efficiency is improved; and on the other hand, different working treatments of the different media are achieved after heat exchange and heat transfer of the different media are achieved in cooperation with introduction of the different media in the respective heat exchange treatment pipes, power and heat supply of all modules of the system is completed, the gradient utilization effect is good, and energy is saved.

The invention relates to the technical field of hydrogen purification, and discloses a TSA dehydration system and method suitable for large-scale wind and light hydrogen production, and the system comprises the following modules: an adsorption module which is composed of a plurality of drying towers and is used for adsorbing moisture in upstream crude hydrogen; the regeneration treatment module comprises a regeneration gas heater, a regeneration gas heat exchanger, a regeneration gas cooler and a regeneration gas gas-liquid separator which are sequentially connected in series and are respectively used for regeneration gas heating, heat exchange of hot-state and cold-state regeneration gas, regeneration gas cooling and gas-water separation, and the regeneration treatment module is provided with a regulating valve for controlling the gas taking amount of the regeneration gas; a valve control module; a monitoring module; and a main control module. Four operation modes are divided according to the real-time crude hydrogen flow, mode switching is executed only when an adsorption time sequence period is finished and dew point monitoring and temperature monitoring both meet qualified conditions, and therefore the number of online towers of an adsorption unit is adjusted along with the change of the crude hydrogen flow, and adaptation to the change of the crude hydrogen flow under the wind-solar hydrogen production condition is achieved.

The invention discloses a double-layer optimization scheduling method for hydrogen energy heavy truck and wind-solar collaborative carbon reduction, and provides a wind-solar hydrogen energy heavy truck collaborative carbon reduction operation mode considering demand response. According to the operation characteristics of a fuel oil heavy truck and a hydrogen energy heavy truck, energy consumption flexible modeling is carried out, a hydrogen energy heavy truck carbon transaction model is constructed, and a hydrogen supply stability evaluation index is provided; and making a'wind-light-hydrogen energy heavy truck 'double-layer collaborative low-carbon optimal scheduling strategy by taking the minimum annual investment cost of the upper-layer capacity configuration model and the optimal daily operation cost of the lower-layer optimal scheduling model as objective functions. A double-layer model is converted into a single-layer linear model to be solved by adopting a Karush-Kuhn-Tucher (KKT) condition and a Big-M method, and example analysis shows that carbon emission and economic cost can be effectively reduced while new energy is consumed to the maximum extent in the provided mode, and fossil energy is replaced by hydrogen energy.

The invention discloses a coal-fired boiler and wind-light hydrogen ammonia alcohol preparation coupling system which comprises a wind-light power generation system, an electrolysis device, an oxygen separator, a hydrogen separator, a premixer, a coal-fired boiler, a desulfurization device, a decarbonization device, a carbon dioxide compressor, a methanol synthesis device, a PSA device, a nitrogen compressor, a synthesis ammonia device and a hydrogen compressor. Electricity generated by the wind-solar power generation system is used for preparing hydrogen and oxygen through the electrolytic cell, the hydrogen is pressurized to synthesize methanol with carbon dioxide captured by the coal-fired boiler decarburization device under the action of a catalyst of the methanol synthesis device, and organic nitrogen and ammonia in coal are combusted through the coal-fired boiler to generate nitrogen. Purifying through the PSA device, and synthesizing ammonia with hydrogen in the ammonia synthesis device. According to the invention, two-stage synthesis of ammonia and three-stage synthesis of methanol are realized through gradient utilization of flue gas energy, the synthesis efficiency of ammonia and methanol is improved, oxygen, ammonia, flue gas and pulverized coal are premixed, the flue gas decarburization efficiency is improved, and ammonia is used for flue gas desulfurization, so that reduced emission of SO2, CO2 and NOX of the coal-fired boiler is realized.