Method and system for synthesizing hydrogen, ammonia and alcohol through coupling of electric hydrogen production and coal chemical industry

Abstract

The invention relates to the field of green energy utilization transformation, and provides a hydrogen-ammonia-alcohol synthesis method and system for electrohydrogen production coupled coal chemical industry. The hydrogen-ammonia-alcohol synthesis method comprises the following steps: synthesizing ammonia and alcohol by utilizing hydrogen produced by partial electric hydrogen production and coal hydrogen production; and adjusting the hydrogen-carbon molar ratio and synthesizing alcohol in a hydrogen-carbon conversion link by using the other part of hydrogen of the electric hydrogen and the coal hydrogen so as to realize co-production proportion regulation and control of the hydrogen, the ammonia and the alcohol. According to the hydrogen-ammonia-alcohol synthesis method, renewable energy sources and fossil resources are fully utilized, and complementation and efficient utilization of the resources are achieved; the carbon emission in the production process can be obviously reduced; the flexible regulation and control of the co-production proportion of hydrogen, ammonia and alcohol can be realized; not only can the flexible adjustment of a long-term plan be met, but also day-ahead, intra-day and real-time adjustment can be realized, and the adaptability of the hydrogen-ammonia-alcohol synthesis method to the fluctuation of a power grid is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of green energy transformation, and provides a hydrogen-ammonia-alcohol synthesis method and system coupled with coal chemical industry by electric hydrogen production. BACKGROUND

[0002] The heavy chemical industry with high energy consumption and high carbon emission is facing increasingly severe carbon reduction pressure. Coal chemical industry is a carbon emission intensive industry, and its high energy consumption and high carbon emission problems are mainly concentrated in fossil energy heat supply, hydrogen supply and material carbon source. Traditional hydrogen production methods mainly rely on fossil energy, which is not conducive to green transformation. However, the rapid development of new energy power generation, such as wind power and photovoltaic power generation, can provide clean energy for chemical production, which is an ideal choice to replace fossil energy.

[0003] However, the current common green transformation scheme of chemical production energy system, such as wind and light power generation for hydrogen production, needs to configure large-scale electrochemical energy storage and hydrogen storage system to smooth the uncertainty of wind and light power generation, which has high cost and is difficult to integrate with the existing coal chemical production process. Therefore, it is urgent to develop new, more efficient and lower cost clean energy hydrogen production and application technology solutions to achieve the goal of green transformation of coal chemical industry. SUMMARY

[0004] The embodiment of the present application provides a hydrogen-ammonia-alcohol synthesis method coupled with coal chemical industry by electric hydrogen production, to solve the defect that the integration of chemical production energy system and coal chemical production process is difficult in the related art.

[0005] The embodiment of the present application also provides a hydrogen-ammonia-alcohol synthesis system coupled with coal chemical industry by electric hydrogen production.

[0006] The first aspect embodiment of the present application provides a hydrogen-ammonia-alcohol synthesis method coupled with coal chemical industry by electric hydrogen production, comprising: Synthesizing ammonia and alcohol by using part of hydrogen produced by electric hydrogen production and coal hydrogen production; Adjusting hydrogen-carbon molar ratio and synthesizing alcohol in a hydrogen-carbon conversion link by using another part of hydrogen produced by electric hydrogen production and coal hydrogen production, to realize the proportion control of hydrogen, ammonia and alcohol.

[0007] According to an embodiment of the present application, the step of synthesizing ammonia and alcohol by using part of hydrogen produced by electric hydrogen production and coal hydrogen production comprises: Providing heat for alcohol production by an electric heating device.

[0008] According to an embodiment of the present application, further comprising a heat storage device, which is coupled with the electric heating device in heat; The step of synthesizing ammonia and alcohol by using part of hydrogen produced by electric hydrogen production and coal hydrogen production comprises: Storing the excess heat of the electric heating device into the heat storage device; The heat storage device provides heat for synthesizing ammonia and / or alcohol.

[0009] According to one embodiment of the present application, the power consumption of the electric heating device and the heat storage device is adjusted based on day-ahead parameters and / or intraday parameters.

[0010] According to one embodiment of the present application, the step of using part of the hydrogen produced by the electric hydrogen production and the hydrogen produced by the coal hydrogen production to synthesize ammonia and alcohol comprises: The power consumption of the electric hydrogen production and the coal hydrogen production is adjusted based on at least one of peak-valley electricity parameters and seasonal parameters.

[0011] According to one embodiment of the present application, the step of using part of the hydrogen produced by the electric hydrogen production and the hydrogen produced by the coal hydrogen production to synthesize ammonia and alcohol comprises: The electricity supply rate and the minimum start-up load of ammonia synthesis are obtained. The ammonia production is adjusted according to the electricity supply rate and the minimum start-up load.

[0012] According to one embodiment of the present application, the adjustment of the ammonia production comprises: When the electricity supply rate is greater than a preset supply rate, the ammonia production is increased; When the electricity supply rate is less than the preset supply rate and less than a preset supply duration, the ammonia production corresponding to the minimum start-up load is ensured; When the electricity supply rate is less than the preset supply rate and greater than the preset supply duration, the synthesis of ammonia is stopped.

[0013] According to one embodiment of the present application, the working condition adjustment range of the electric hydrogen production is 50% to 100%.

[0014] According to one embodiment of the present application, in the step of using part of the hydrogen produced by the electric hydrogen production and the hydrogen produced by the coal hydrogen production to synthesize ammonia and alcohol, carbon is obtained by using at least one of carbon capture and biomass energy emission.

[0015] The second aspect embodiment of the present application provides a hydrogen-ammonia-alcohol synthesis system coupled with electric hydrogen production and coal chemical industry, comprising: An electric hydrogen production device and a coal hydrogen production device are used to produce hydrogen to synthesize ammonia and alcohol. A hydrogen-carbon conversion device is in fluid communication with the electric hydrogen production device and the coal hydrogen production device to adjust the hydrogen-carbon molar ratio and synthesize alcohol, so as to realize the proportion control of hydrogen, ammonia and alcohol.

[0016] The hydrogen-ammonia-alcohol synthesis method coupled with coal chemical industry by electric hydrogen production provided by the first aspect of the present application, by combining electric hydrogen production technology and coal hydrogen production technology, makes full use of renewable energy and fossil resources, realizes the complementation and efficient use of resources. The electric hydrogen production technology has the characteristics of being clean and non-polluting, which can significantly reduce carbon emissions in the production process. By adjusting the distribution ratio of hydrogen in the synthesis of ammonia and alcohol and the hydrogen-carbon conversion link, the flexible regulation of the hydrogen-ammonia-alcohol co-production ratio can be realized. Due to the introduction of the hydrogen-carbon conversion link, the ratio of the hydrogen-carbon conversion link can be flexibly adjusted according to the production amount of hydrogen-ammonia-alcohol, the utilization rate of oxygen is improved, and the utilization rate of carbon is improved. This hydrogen-ammonia-alcohol synthesis method not only can meet the flexible adjustment of long-term planning, but also can realize day-ahead, intra-day and real-time adjustment, and improve the adaptability of the hydrogen-ammonia-alcohol synthesis method to power grid volatility.

[0017] The hydrogen-ammonia-alcohol synthesis system coupled with coal chemical industry by electric hydrogen production provided by the second aspect of the present application integrates electric hydrogen production technology and coal hydrogen production technology, realizes diversified production of hydrogen. By accurately regulating the hydrogen-carbon molar ratio through the hydrogen-carbon conversion device, the synthesis of alcohol products is realized. The hydrogen-ammonia-alcohol co-production ratio is flexibly regulated to meet diversified market demand. Renewable energy and abundant coal resources are used to improve resource utilization efficiency. By accurately regulating the reaction conditions and raw material ratio, resource waste and energy consumption are reduced. The electric hydrogen production device reduces the dependence on fossil fuels and reduces carbon emissions. The coal hydrogen production device can use advanced purification technology to reduce pollutant emissions. The chemical conversion reaction in the hydrogen-carbon conversion device can realize the recycling of carbon and reduce carbon emissions. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present application or prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0019] Figure 1 is a schematic flow chart of the hydrogen-ammonia-alcohol synthesis method coupled with coal chemical industry by electric hydrogen production provided by the present application.

[0020] Figure 2 is a schematic structural diagram of the hydrogen-ammonia-alcohol synthesis system coupled with coal chemical industry by electric hydrogen production provided by the present application. DETAILED DESCRIPTION

[0021] The embodiments of the present application will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0022] As Figure 1As shown, the first aspect embodiment of the present application provides a hydrogen-ammonia-alcohol synthesis method coupled with coal chemical industry by electric hydrogen production, comprising: Step 10, using part of the hydrogen produced by electric hydrogen production and coal hydrogen production to synthesize ammonia and alcohol; Step 20, using another part of the hydrogen produced by electric hydrogen production and coal hydrogen production to adjust the hydrogen-carbon molar ratio in the hydrogen-carbon conversion link and synthesize alcohol, so as to realize the proportion regulation of hydrogen, ammonia and alcohol.

[0023] According to the hydrogen-ammonia-alcohol synthesis method coupled with coal chemical industry by electric hydrogen production provided by the first aspect embodiment of the present application, by combining electric hydrogen production and coal hydrogen production technologies, renewable energy and fossil resources are fully utilized, and the complementation and efficient utilization of resources are realized. The electric hydrogen production technology has the characteristics of being clean and pollution-free, and can significantly reduce carbon emissions in the production process. By adjusting the distribution ratio of hydrogen in the synthesis of ammonia and alcohol and the hydrogen-carbon conversion link, the flexible regulation of the proportion of hydrogen, ammonia and alcohol co-production can be realized. Due to the introduction of the hydrogen-carbon conversion link, the ratio of the hydrogen-carbon conversion link can be flexibly adjusted according to the production amount of hydrogen, ammonia and alcohol, the utilization rate of oxygen is improved, and the utilization rate of carbon is improved. This hydrogen-ammonia-alcohol synthesis method coupled with coal chemical industry by electric hydrogen production not only can meet the flexible adjustment of long-term planning, but also can realize day-ahead, intra-day and real-time adjustment, and improve the adaptability of the hydrogen-ammonia-alcohol synthesis method coupled with coal chemical industry by electric hydrogen production to power grid volatility.

[0024] Please continue to see Figure 1 The first aspect embodiment of the present application provides a hydrogen-ammonia-alcohol synthesis method coupled with coal chemical industry by electric hydrogen production, which combines electric hydrogen production and coal hydrogen production two technical paths, realizes the joint production of hydrogen, ammonia and alcohol three important chemical products, and has flexible co-production proportion regulation ability.

[0025] In step 10, hydrogen is produced by electric hydrogen production technology and coal hydrogen production technology respectively. The electric hydrogen production technology uses renewable energy (such as solar energy, wind energy, etc.) to produce hydrogen by electrolysis of water, which has the advantages of being clean and sustainable; the coal hydrogen production technology uses coal resources to produce hydrogen through gasification, conversion and other processes, which has the characteristics of abundant raw materials and mature technology. The two kinds of hydrogen are mixed in a certain proportion as raw materials for the subsequent synthesis process.

[0026] In addition, in step 10, part of the mixed hydrogen is used to synthesize ammonia and alcohol. In this step, hydrogen first reacts with nitrogen to produce ammonia under the action of a catalyst, and the remaining hydrogen can also react with carbon monoxide and other carbon sources under suitable conditions to produce alcohol compounds (such as methanol, ethanol, etc.). This step realizes the simultaneous production of ammonia and alcohol, and improves the utilization rate of raw materials.

[0027] In step 20, another part of the mixed hydrogen enters the hydrogen-carbon conversion section. In this section, by adjusting the molar ratio of hydrogen to carbon sources such as carbon monoxide, the types and yields of alcohol compounds can be controlled. At the same time, hydrogen-carbon conversion can further optimize reaction conditions to improve the yield and quality of alcohol compounds. Through this step, the flexible control of the hydrogen, ammonia, and alcohol co-production ratio can be achieved.

[0028] According to an embodiment of the present application, the steps of synthesizing ammonia and alcohol using part of the hydrogen produced by electrolysis and hydrogen produced by coal, include: The electric heating device provides heat for alcohol production.

[0029] In an embodiment of the present application, in the steps of synthesizing ammonia and alcohol using part of the hydrogen produced by electrolysis and hydrogen produced by coal, the electric heating device is introduced to provide heat for alcohol production, further improving the efficiency and flexibility of the entire synthesis process.

[0030] The electric heating device is a device that converts electrical energy into heat energy, with the advantages of high efficiency, controllability, environmental protection, etc. In the embodiments of the present application, the electric heating device is used to provide the required heat for the reaction of alcohol production. By accurately controlling the input power and working time of the electric heating device, the reaction temperature can be accurately controlled, thereby optimizing the synthesis conditions of alcohol.

[0031] The heat generated by the electric heating device is transferred to the reaction system through heat exchangers and other devices to ensure that the reaction is carried out at an appropriate temperature. At the same time, in order to further improve the heat utilization rate, a waste heat recovery system can be designed to recover and reuse the waste heat generated during the reaction, thereby reducing energy consumption and production costs.

[0032] In the synthesis of ammonia, hydrogen and nitrogen react to form ammonia under the action of a catalyst. This step has strict requirements for temperature, pressure, and catalyst selection. In the synthesis of alcohol, hydrogen and carbon sources such as carbon monoxide react to form alcohol compounds under suitable conditions. The heat provided by the electric heating device can ensure that this reaction is carried out within the optimal temperature range, thereby improving the yield and quality of alcohol.

[0033] By using the electric heating device to provide heat for alcohol production, precise control and efficient utilization of heat can be achieved, thereby reducing energy consumption and production costs. At the same time, the application of the waste heat recovery system can further improve the energy efficiency of the entire synthesis process. The electric heating device can achieve precise regulation of the reaction temperature, thereby optimizing the synthesis conditions of alcohol, improving the yield and quality of alcohol. Precise temperature control can also ensure that the synthesis of ammonia is carried out under optimal conditions, improving the yield and purity of ammonia. The electric heating device has the characteristics of fast response and easy control, and can flexibly adjust the heat output according to production needs, thereby adapting to different production conditions and market demands. This flexibility enables the embodiments of the present invention to better cope with market fluctuations and uncertainties, improving production efficiency and economic benefits.

[0034] According to one embodiment of the present invention, a heat storage device is further included, which is in thermal coupling connection with the electric heating device; The steps of synthesizing ammonia and alcohol using part of the electrically produced hydrogen and coal-produced hydrogen include: The excess heat of the electric heating device is stored in the heat storage device; The heat storage device provides heat for the synthesis of ammonia and / or alcohol.

[0035] In one embodiment of the present invention, in addition to the electric heating device, a heat storage device is also introduced and is in thermal coupling connection with the electric heating device. This design not only improves the utilization efficiency of heat, but also enhances the flexibility and stability of the entire system. The following is a detailed technical description and technical effect analysis of this step: The heat storage device is a device that can store and release heat, which can effectively balance the supply and demand of heat, improve the energy utilization efficiency and stability of the entire system.

[0036] In the embodiments of the present invention, the heat storage device is in thermal coupling connection with the electric heating device, which can receive and store the excess heat generated by the electric heating device. When additional heat is needed for the synthesis of ammonia and / or alcohol, the heat storage device can release the stored heat to meet the reaction requirements.

[0037] When the heat generated by the electric heating device exceeds the heat required for the synthesis of ammonia and alcohol, the excess heat will be stored in the heat storage device. This can be achieved by heat exchangers and other devices to transfer heat from the electric heating device to the heat storage medium (such as molten salt, water, rock, etc.), thereby achieving heat storage.

[0038] When additional heat is needed for the synthesis of ammonia and / or alcohol, the heat in the heat storage device will be released and transferred to the reaction system through heat exchangers and other devices to ensure that the reaction is carried out at an appropriate temperature.

[0039] In the synthesis of ammonia, hydrogen and nitrogen react with a catalyst to produce ammonia. This step has strict temperature requirements, and a thermal storage device can provide a stable heat input to ensure the reaction proceeds within the optimal temperature range. Similarly, suitable temperature conditions are required in the synthesis of alcohols. A thermal storage device can release stored heat to provide the necessary heat for the alcohol synthesis reaction.

[0040] By introducing a thermal storage device, excess heat generated by the electric heating unit can be fully utilized, avoiding heat waste. Simultaneously, the thermal storage device can balance heat supply and demand, improving the overall system's energy efficiency. The thermal storage device can store a large amount of heat and release it when needed, providing a stable heat input for the ammonia and alcohol synthesis reaction. This ensures the reaction proceeds within a suitable temperature range, improving product quality and yield. The thermal storage device can provide appropriate heat input based on the needs of the ammonia and alcohol synthesis reaction. The presence of the thermal storage device allows the entire system to respond more flexibly to different production and market demands. For example, during the ammonia and alcohol synthesis reaction, if the electric heating unit malfunctions or requires maintenance, the thermal storage device can temporarily replace it, ensuring production continuity and stability.

[0041] According to one embodiment of the present invention, the power consumption of the electric heating device and the thermal storage device is adjusted based on the day-ahead parameters and / or intraday parameters.

[0042] In one embodiment of the present invention, the day-ahead parameters collected may include key parameters such as forecasts of electricity load and renewable energy generation. Intraday parameters may also be used, such as real-time monitoring of renewable energy generation and short-term forecasts of electricity load.

[0043] Advanced forecasting algorithms and models are used to accurately predict these parameters, providing insights into electricity demand and energy trends over a future period. Based on these predictions, power consumption adjustment strategies for electric heating devices and thermal storage devices are developed. For example, during periods of low electricity prices or ample energy supply, the power consumption of electric heating devices is increased to improve heat production efficiency; conversely, during periods of high electricity prices or tight energy supply, the power consumption is reduced to lower operating costs. Thermal storage devices are used to store excess heat during periods of low electricity prices or ample energy supply and release it during periods of high electricity prices or tight energy supply to meet the demands of ammonia synthesis and alcohol reactions.

[0044] By real-time monitoring of the operating status, power consumption, and key parameters such as temperature and pressure of the ammonia synthesis and alcohol reactions of the electric heating and thermal storage devices, the system provides real-time feedback and optimization of power consumption adjustment strategies based on the monitoring results, ensuring stable system operation and efficient energy utilization. Dynamically adjusting the power consumption of the electric heating and thermal storage devices allows for full utilization of electricity price fluctuations and energy supply conditions, improving energy efficiency. Increasing power consumption during periods of low electricity prices or ample energy supply increases heat production efficiency; decreasing power consumption during periods of high electricity prices or tight energy supply reduces operating costs. Accurate prediction and dynamic adjustment of power consumption can significantly reduce energy and production costs. The application of thermal storage devices further reduces dependence on high electricity price periods, lowering electricity expenses. Real-time monitoring and feedback mechanisms can promptly identify and resolve problems in system operation, ensuring stable system operation. Dynamically adjusting power consumption balances the system load, preventing overload or underload phenomena.

[0045] According to one embodiment of the present invention, the step of using hydrogen produced from partial electro-hydrogen and coal-based hydrogen production includes: The power consumption of hydrogen produced by electricity and hydrogen produced by coal is adjusted based on at least one of peak-valley power parameters and seasonal parameters.

[0046] In one embodiment of the present invention, the power consumption of the hydrogen production device is increased during off-peak hours by taking advantage of the peak-valley electricity price difference in the power grid, so as to improve the efficiency of water electrolysis and reduce electricity costs.

[0047] Conversely, during peak electricity price periods, the power consumption of electric hydrogen production units is reduced, while the load on coal-to-hydrogen production units is increased to balance hydrogen supply and reduce production costs.

[0048] The power consumption of electro- and coal-based hydrogen production units is adjusted according to seasonal climate conditions and energy supply. For example, during the summer when renewable energy sources (such as solar and wind power) are abundant, these clean energy sources can be used more extensively for water electrolysis to produce hydrogen, reducing reliance on traditional energy sources. Conversely, during winter and other seasons when renewable energy is scarce, the proportion of coal-based hydrogen production can be appropriately increased to ensure a stable hydrogen supply. An intelligent control system is introduced to monitor key parameters such as grid electricity prices, climate conditions, and production plans in real time. Based on these parameters, the intelligent control system automatically adjusts the power consumption of the electro- and coal-based hydrogen production units to achieve optimal energy allocation and minimize costs.

[0049] By leveraging peak-valley electricity price differences and seasonal variations in renewable energy, this invention can significantly reduce the cost of hydrogen production. Producing hydrogen through water electrolysis during off-peak electricity periods and utilizing clean energy sources during seasons with abundant renewable energy both contribute to lower electricity bills. The introduction of an intelligent control system significantly improves energy efficiency. The system can dynamically adjust the power consumption for both electro- and coal-based hydrogen production based on actual demand and energy supply, thereby avoiding energy waste.

[0050] According to one embodiment of the present invention, the step of synthesizing ammonia and alcohols using hydrogen from partial electro-hydrogenation and coal-based hydrogen production includes: To obtain the power supply rate and the minimum starting load for ammonia synthesis; Adjust ammonia production based on power supply rate and minimum operating load.

[0051] In one embodiment of the present invention, the power supply rate refers to the proportion of electricity supplied to a production facility by the power grid or renewable energy generation system to its total power demand. The present invention obtains the current power supply rate by real-time monitoring of the output of the power grid or renewable energy generation system.

[0052] During startup and operation, ammonia synthesis units need to maintain a certain load to ensure stable equipment operation and continuous product production. Minimum operating load refers to the minimum electrical energy consumption required for the ammonia synthesis unit to operate stably.

[0053] By dynamically adjusting the production load of synthetic ammonia and alcohols based on the power supply rate, it is possible to fully utilize renewable energy sources and electricity provided by the power grid, thereby improving energy efficiency. Dynamically adjusting the production load can avoid excessive electricity consumption during periods of insufficient power supply, which would lead to increased electricity costs and thus reduce production costs.

[0054] According to one embodiment of the present invention, adjusting the ammonia production includes: When the power supply rate is greater than the preset supply rate, increase the ammonia production; When the power supply rate is less than the preset supply rate and less than the preset supply duration, the ammonia production corresponding to the minimum start-up load is guaranteed. When the power supply rate is less than the preset supply rate but greater than the preset supply duration, ammonia synthesis is stopped.

[0055] In one embodiment of the present invention, a preset supply rate defines a threshold for whether the power supply is sufficient. When the actual power supply rate exceeds this value, the power supply is considered sufficient, and it is appropriate to increase the amount of ammonia synthesized.

[0056] The preset supply duration is used to measure the duration of insufficient power supply. When the power supply rate is lower than the preset supply rate and the duration exceeds this value, a more conservative production strategy will be adopted to avoid damage to the equipment caused by prolonged low-load operation.

[0057] The system monitors the power supply rate in real time, including power from the grid or renewable energy generation systems. The monitored power supply rate is compared with a preset supply rate to determine the current power supply status.

[0058] When the power supply rate exceeds the preset supply rate, the system determines that the power supply is sufficient. At this time, the load of the ammonia synthesis unit will be increased to improve ammonia production and make full use of the abundant power resources.

[0059] When the power supply rate is less than the preset supply rate and the duration is less than the preset supply duration, the system determines it to be a temporary power shortage state. At this time, in order to ensure the stable operation of the equipment and avoid damage to the equipment caused by frequent start-ups and shutdowns, the ammonia synthesis unit will be maintained at the minimum operating load to ensure the corresponding minimum ammonia production.

[0060] When the power supply rate is less than the preset supply rate and the duration exceeds the preset supply duration, the system determines that it is in a state of long-term power shortage. At this time, in order to avoid potential damage to the equipment caused by long-term low-load operation and to save unnecessary energy consumption, the ammonia synthesis process will be stopped until the power supply is restored to a stable state.

[0061] An automated control system is introduced to automatically adjust the load and output of the ammonia synthesis unit based on real-time monitoring of the power supply rate and preset parameters. The system also has a feedback mechanism, which can fine-tune the preset parameters according to actual production conditions and market demand to achieve more precise production control.

[0062] By dynamically adjusting ammonia production based on the real-time status of the power supply rate, efficient energy utilization is achieved, avoiding excessive consumption when power supply is insufficient. When power supply is insufficient, maintaining minimum operating load or halting production avoids unnecessary energy consumption and equipment damage, thereby reducing production costs. Setting preset supply durations avoids potential damage to equipment caused by prolonged low-load operation, extending equipment lifespan.

[0063] According to one embodiment of the present invention, the operating condition adjustment range of the electro-hydrogen production is 50% to 100%.

[0064] In one embodiment of the present invention, the operating condition adjustment range refers to the ability of the hydrogen production equipment to operate stably under different loads. A reasonable operating condition adjustment range can ensure that the equipment operates efficiently and safely under various operating conditions, while meeting production needs.

[0065] Setting the lower limit of the operating condition adjustment range at 50% means that the equipment can maintain efficient operation at at least 50% load. This helps avoid the problem of low efficiency when the equipment operates at low loads, thereby improving overall energy efficiency. For some hydrogen production equipment, excessively low loads may lead to unstable operation or even safety issues. Setting the lower limit of the operating condition adjustment range at 50% helps ensure that the equipment operates under safe load conditions, reducing safety risks.

[0066] The 50% to 100% operating condition adjustment range provides sufficient flexibility to meet different production needs. When market demand increases, the equipment load can be quickly increased to increase output; when market demand decreases, the equipment load can be reduced to save energy.

[0067] According to one embodiment of the present invention, in the step of synthesizing ammonia and alcohols using hydrogen produced from partial electro-hydrogenation and coal-based hydrogen production, carbon is obtained by utilizing at least one of carbon capture and biomass energy emissions.

[0068] In one embodiment of the present invention, hydrogen is produced by combining partial electro-hydrogen production and coal-to-hydrogen technologies, and then used to synthesize ammonia and alcohols, with at least one of carbon capture and biomass energy emissions introduced as a means of obtaining carbon.

[0069] Carbon capture technology refers to the process of capturing carbon dioxide from industrial emission sources or the atmosphere. In embodiments of the present invention, carbon capture technology can be applied to at least the following scenarios: In industries such as coal chemical and power generation, emission sources often contain high concentrations of carbon dioxide. Carbon capture technology can effectively capture carbon dioxide from these emission sources.

[0070] The captured carbon dioxide can be further utilized in the synthesis of ammonia and alcohols, serving as a carbon source in chemical reactions.

[0071] Although the concentration of carbon dioxide in the atmosphere is relatively low, it is still possible to capture carbon dioxide directly from the atmosphere through advanced carbon capture technologies.

[0072] Biomass energy refers to a form of energy that utilizes biomass as an energy source. In embodiments of this invention, biomass emissions can be considered a potential carbon source. Through biomass gasification technology, biomass can be converted into gaseous fuels containing a certain amount of carbon dioxide. These gaseous fuels can be further used in the synthesis of ammonia and alcohols, simultaneously achieving the effective utilization of biomass resources and the recycling of carbon.

[0073] Biomass combustion generates significant amounts of carbon dioxide emissions. By incorporating carbon capture technology, these emissions can be extracted and removed. This method not only achieves efficient utilization of biomass energy but also reduces carbon emissions during biomass combustion.

[0074] By introducing carbon capture and biomass energy emissions as carbon sources, diversified resource utilization has been achieved. This helps improve overall resource utilization efficiency and reduce production costs. The application of carbon capture technology can reduce carbon dioxide emissions from industrial emission sources. The utilization of biomass energy realizes carbon recycling, reducing dependence on fossil fuels and carbon emissions.

[0075] A second aspect of the present invention provides a hydroammonium synthesis system for electro-hydrogen production coupled with coal chemical processes, comprising: Electric hydrogen production units and coal-to-hydrogen production units are used to produce hydrogen for the synthesis of ammonia and alcohols; The hydrogen-carbon conversion unit is fluidly connected to the electric hydrogen production unit and the coal-to-hydrogen production unit to adjust the hydrogen-carbon molar ratio and synthesize alcohols, thereby achieving the control of the co-production ratio of hydrogen, ammonia, and alcohols.

[0076] The electro-hydrogen production coupled with coal chemical processes for the synthesis of hydrogen, ammonia, and alcohols provided in the second aspect of this invention integrates electro-hydrogen production and coal-to-hydrogen technologies to achieve diversified hydrogen production. The hydrogen-carbon shift converter precisely controls the hydrogen-carbon molar ratio to synthesize alcohol products. The co-production ratio of hydrogen, ammonia, and alcohols can be flexibly adjusted to meet diverse market demands. Renewable energy and abundant coal resources are utilized to improve resource utilization efficiency. Precise control of reaction conditions and feedstock ratios reduces resource waste and energy consumption. The electro-hydrogen production unit reduces dependence on fossil fuels and lowers carbon emissions. The coal-to-hydrogen unit can employ advanced purification technologies to reduce pollutant emissions. The chemical shift reaction in the hydrogen-carbon shift converter enables carbon recycling, further reducing carbon emissions.

[0077] Please continue reading Figure 2 The electro-hydrogen production coupled with coal chemical synthesis system for hydrogen, ammonia, and alcohol provided in the second aspect of the present invention is a highly efficient co-production system that integrates multiple hydrogen production technologies and chemical conversion processes, aiming to achieve flexible co-production of hydrogen, ammonia, and alcohol.

[0078] An electrolytic hydrogen production device utilizes water electrolysis technology to break down water molecules into hydrogen and oxygen by applying voltage. This device can flexibly adjust hydrogen production based on the input electrical energy, making it suitable for environments with abundant renewable energy or a stable power grid.

[0079] Coal-to-hydrogen plants can convert coal into gases such as hydrogen and carbon monoxide through coal gasification or coal reforming technologies. This system can utilize abundant coal resources to achieve a stable supply of hydrogen and can adjust production strategies based on coal quality and market demand.

[0080] The hydrogen-carbon conversion unit is connected after the electric hydrogen production unit and the coal-to-hydrogen production unit to adjust the molar ratio of hydrogen to carbon monoxide (or other carbon sources). Through chemical conversion reactions (such as the reaction of carbon monoxide with water vapor to produce hydrogen and carbon dioxide, or the reaction of hydrogen with carbon dioxide to produce carbon monoxide and water), this unit can precisely adjust the hydrogen-carbon ratio according to production needs, thereby synthesizing alcohol products.

[0081] The electric hydrogen production unit and the coal-based hydrogen production unit operate simultaneously or separately to produce the required hydrogen. The output and ratio of the two hydrogen production units are flexibly adjusted according to the power supply, coal quality, and market demand.

[0082] The produced hydrogen and carbon monoxide (or other carbon source) enter the hydrogen-carbon conversion unit. The hydrogen-carbon molar ratio is precisely controlled by adjusting the reaction conditions and feedstock ratio.

[0083] In the hydrogen-carbon conversion unit, appropriate chemical conversion reactions are selected according to production needs to synthesize alcohol products. Simultaneously, the ratio of hydrogen, ammonia, and alcohol co-production can be flexibly controlled by adjusting reaction conditions and product separation technology.

[0084] Products such as hydrogen, ammonia, and alcohols can also be separated and extracted to achieve high purity through separation and purification techniques, such as distillation, absorption, and membrane separation.

[0085] By adjusting the output of the electro-hydrogen production unit and the coal-to-hydrogen production unit, the reaction conditions and feedstock ratio of the hydrogen-carbon conversion unit, and the product separation and purification technology, the co-production ratio of hydrogen, ammonia, and alcohol can be flexibly controlled.

[0086] The ratio of combined production can be dynamically adjusted based on factors such as market demand, raw material supply, and production costs to improve the system's economic efficiency and market competitiveness.

[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for synthesizing hydrogen ammonia and alcohols via electrochemical coupling with coal chemical processes, characterized in that, include: Hydrogen produced by partial electrolysis and coal-based hydrogen production is used to synthesize ammonia and alcohols. By utilizing the hydrogen produced by the electro-hydrogenation and the hydrogen produced by the coal-hydrogenation process, the hydrogen-carbon molar ratio is adjusted in the hydrogen-carbon conversion stage to synthesize alcohols, thereby achieving the control of the co-production ratio of hydrogen, ammonia, and alcohols.

2. The method for synthesizing hydrogen ammonia and alcohols via electro-hydrogenation coupled with coal chemical processes according to claim 1, characterized in that, The step of synthesizing ammonia and alcohols using hydrogen produced from partial electro-hydrogenation and coal-based hydrogen production includes: The alcohol is produced by using an electric heating device.

3. The method for synthesizing hydrogen ammonia and alcohols via electro-hydrogenation coupled with coal chemical processes according to claim 2, characterized in that, It also includes a thermal storage device, which is thermally coupled to the electric heating device; The step of synthesizing ammonia and alcohols using hydrogen produced from partial electro-hydrogenation and coal-based hydrogen production includes: The excess heat from the electric heating device is stored in the heat storage device. The heat storage device provides heat for the synthesis of ammonia and / or alcohols.

4. The method for synthesizing hydrogen ammonia and alcohols via electro-hydrogenation coupled with coal chemical processes according to claim 3, characterized in that, The power consumption of the electric heating device and the thermal storage device is adjusted based on the day-ahead parameters and / or intraday parameters.

5. The method for synthesizing hydrogen ammonia and alcohols via electro-hydrogenation coupled with coal chemical processes according to claim 1, characterized in that, The step of utilizing hydrogen produced from partial electrolysis and coal includes: The power consumption of the electric hydrogen production and the coal hydrogen production is adjusted based on at least one of peak-valley power parameters and seasonal parameters.

6. The method for synthesizing hydrogen ammonia and alcohols via electro-hydrogenation coupled with coal chemical processes according to any one of claims 1 to 5, characterized in that, The step of synthesizing ammonia and alcohols using hydrogen produced from partial electro-hydrogenation and coal-based hydrogen production includes: To obtain the power supply rate and the minimum starting load for ammonia synthesis; The ammonia production is adjusted based on the power supply rate and the minimum operating load.

7. The method for synthesizing hydrogen ammonia and alcohols via electro-hydrogenation coupled with coal chemical processes according to claim 6, characterized in that, The adjustment of ammonia production includes: When the power supply rate is greater than the preset supply rate, increase the ammonia production; When the power supply rate is less than the preset supply rate and less than the preset supply duration, the ammonia production corresponding to the minimum start-up load is guaranteed. When the power supply rate is less than the preset supply rate but greater than the preset supply duration, ammonia synthesis is stopped.

8. The method for synthesizing hydrogen ammonia and alcohols via electro-hydrogenation coupled with coal chemical processes according to any one of claims 1 to 5, characterized in that, The operating condition adjustment range of the electro-hydrogen production is 50% to 100%.

9. The method for synthesizing hydrogen ammonia and alcohols via electro-hydrogenation coupled with coal chemical processes according to any one of claims 1 to 5, characterized in that, In the step of synthesizing ammonia and alcohols using hydrogen produced from partial electro-hydrogenation and coal-based hydrogen production, carbon is obtained by utilizing at least one of carbon capture and biomass energy emissions.

10. A hydrogen ammonia-ethanol synthesis system coupled with electro-hydrogen production and coal chemical processes, characterized in that, include: Electric hydrogen production units and coal-to-hydrogen production units are used to produce hydrogen for the synthesis of ammonia and alcohols; The hydrogen-carbon conversion device is fluidly connected to the electric hydrogen production device and the coal-to-hydrogen production device to adjust the hydrogen-carbon molar ratio and synthesize alcohols, thereby achieving the co-production ratio control of hydrogen, ammonia, and alcohols.

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