Hydrogen separation device for electrode steam boiler based on high-temperature ceramic membrane

Abstract

The invention relates to the technical field of hydrogen separation, in particular to a hydrogen separation device for an electrode steam boiler based on a high-temperature ceramic membrane. The device comprises a steam input end, a steam discharge end and a steam circulation channel, the steam input end and the steam discharge end are connected to the two ends of the steam circulation channel respectively to jointly form a steam guide channel, and the steam input end and the steam discharge end are externally connected with a steam generator and a steam utilization end respectively. A filtering assembly is installed in the steam circulation channel and guides steam to be conveyed in the steam circulation channel, and the hydrogen component in the steam is collected through permeation of a filtering permeable membrane made of a high-temperature ceramic membrane. The high-temperature ceramic membrane filter element tube is adopted, efficient permeation separation of hydrogen components in steam is achieved, the hydrogen recovery rate is increased, resource recycling is promoted, a negative pressure environment is formed in the filter cavity through the negative pressure pump, hydrogen permeation and extraction are accelerated, and the separation rate and the system efficiency are further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen separation, and in particular to a hydrogen separation device for an electrode steam boiler based on a high-temperature ceramic membrane. Background Art

[0002] Electrode steam boilers have been widely used in chemical, pharmaceutical, food, electric power and other fields due to their high heating efficiency, fast response speed and no combustion emissions. Electrode steam boilers directly heat boiler water through electric current to generate steam. In actual operation, due to factors such as raw water impurities, electrolysis side reactions and material corrosion, a certain amount of hydrogen impurities are often generated in the steam circuit. The sources of hydrogen impurities mainly include soluble impurities in raw water, electrode reaction by-products, and corrosion reactions of boiler components. The presence of hydrogen impurities will have a serious impact on the safety and operational stability of electrode steam boilers. Hydrogen is a flammable and explosive gas. When it accumulates to a certain concentration, there is a risk of explosion, threatening the safety of equipment and personnel and reducing the reliability of equipment operation.

[0003] At present, the main industrial method for treating hydrogen impurities in steam boilers is high-temperature oxidation, which is to introduce air or oxygen into the boiler system and oxidize hydrogen to produce water under high-temperature conditions, thereby eliminating hydrogen impurities. However, this method has many shortcomings. The high-temperature oxidation process requires additional energy consumption, which increases the operating cost of the system. High-temperature oxidation has strict control requirements on reaction temperature, oxygen flow rate and reaction time. The slightest carelessness may lead to incomplete oxidation or an increase in side reactions. The high temperature and strong oxidizing environment aggravate the corrosion and aging of boiler equipment and shorten the service life of the equipment. Summary of the Invention

[0004] In order to solve the safety problem of by-product hydrogen in electrode steam boilers and effectively separate and purify the by-product hydrogen, the present invention provides a hydrogen separation device for electrode steam boilers based on high-temperature ceramic membranes.

[0005] The present invention provides a hydrogen separation device for an electrode steam boiler based on a high-temperature ceramic membrane, which adopts the following technical solutions: A hydrogen separation device for an electrode steam boiler based on a high-temperature ceramic membrane includes a steam input end, a steam exhaust end and a steam circulation channel. The steam input end and the steam exhaust end are respectively connected to the two ends of the steam circulation channel to form a steam guiding channel. The steam input end and the steam exhaust end are respectively externally connected to a steam generator and a steam utilization end. A filter component is installed in the steam circulation channel. The filter component guides the steam to be transported in the steam circulation channel and collects the hydrogen component in the steam through a filter permeation membrane made of a high-temperature ceramic membrane.

[0006] By installing a high-temperature ceramic membrane in the steam circulation channel, it is possible to achieve efficient and selective permeation and separation of the hydrogen component in steam under high-temperature conditions, effectively reducing the hydrogen concentration in the steam circuit and eliminating the safety hazards caused by hydrogen. The device can continuously and stably separate and remove hydrogen, significantly reducing the risk of hydrogen accumulation in the electrode steam boiler system, reducing safety accidents caused by hydrogen leakage and explosion, and improving the intrinsic safety level of boiler operation. Compared with traditional high-temperature oxidation methods, this device does not require the introduction of additional oxygen or air and does not rely on high-energy oxidation reactions, thereby significantly reducing energy consumption and operating costs, with good energy-saving effects. The high-temperature ceramic membrane filtration and separation process has obvious physical characteristics and simple adjustment parameters, which makes it easy to implement automated control and process monitoring, reducing operational difficulty and improving the stability and reliability of system operation. The high-temperature ceramic membrane has excellent high-temperature and corrosion resistance and can operate stably and long-term in the high-temperature, humid and complex chemical environment of the steam boiler, effectively extending the service life of the device and reducing maintenance and replacement frequency. By timely separating and removing hydrogen impurities, hydrogen interference with heat exchange and automatic control is avoided, which helps to improve the overall thermal efficiency and operating economy of the boiler system.

[0007] Furthermore, the filter assembly includes a filter core tube, which is a hollow tube and is made of a high-temperature ceramic membrane. One side of the filter core tube is connected to the steam circulation channel to form a steam delivery cavity, and the other side of the filter core tube is combined with the filter cavity wall to form a filter cavity.

[0008] The use of high-temperature ceramic membrane hollow tubes as filter core tubes significantly increases the hydrogen permeation area, allowing hydrogen in steam to quickly and fully permeate and separate in a shorter path, thereby improving the overall hydrogen separation efficiency. The filter core tube and the filter cavity wall are combined to form an independent filter cavity with a compact structure and small footprint, which facilitates device integration and modular expansion. It is also convenient for disassembly, cleaning, and maintenance, reducing operating and maintenance costs. The closed structure of the high-temperature ceramic membrane core tube effectively prevents steam from directly entering the filter cavity, ensuring that only small molecular gases such as hydrogen enter the filter cavity through the permeable membrane, thereby improving the purity and selectivity of the separated hydrogen. The high-temperature ceramic membrane hollow tube naturally has excellent high temperature resistance, high pressure resistance, and corrosion resistance, and is suitable for long-term stable operation in the extreme working environment of the electrode steam boiler, ensuring the safety and reliability of the device.

[0009] Furthermore, the filter assembly includes a negative pressure pump, one suction end of the negative pressure pump is connected to the filter cavity, and the negative pressure pump forms a negative pressure environment in the filter cavity by sucking the gas in the filter cavity.

[0010] By setting a negative pressure pump in the filter chamber and forming a negative pressure environment, the permeation driving force of small molecular gases such as hydrogen on the high-temperature ceramic membrane can be effectively enhanced, and the migration speed of hydrogen from the steam side to the filter chamber side can be accelerated, thereby significantly improving the hydrogen separation rate and overall separation efficiency. The negative pressure effect helps to continuously and actively extract permeable molecules such as hydrogen from the filter chamber, reduce the retention and reverse diffusion of hydrogen in the filter chamber, and effectively improve the purity and selectivity of the collected hydrogen. The real-time extraction of gas in the filter chamber by the negative pressure pump can prevent hydrogen from accumulating in the filter chamber, reduce the safety risks caused by increased hydrogen concentration, and further improve the safety of system operation. The negative pressure environment ensures the continuity of the permeation process and the stability of the gas concentration in the filter chamber, which helps the device to perform hydrogen separation for a long time and stably, and is suitable for automated and continuous industrial applications.

[0011] Furthermore, one end of the negative pressure pump outlet is connected to a collector, a one-way valve is installed on the pipeline connecting the collector and the negative pressure pump, and the collector is connected to and installed with a cooler.

[0012] A one-way valve is set on the pipeline between the negative pressure pump and the collector to effectively prevent the hydrogen and other gases separated in the collector from flowing back into the filter chamber due to pressure fluctuations, thereby ensuring the unidirectionality of the separation process and further improving the collection purity of hydrogen and the safety of the system. The air outlet of the negative pressure pump is directly connected to the collector, which can centrally collect and store the separated hydrogen and other gases for subsequent purification, utilization or transportation, thereby improving the overall integration and operational convenience of the system. The collector is connected and installed with a cooler to cool the separated high-temperature gas, reduce the temperature of hydrogen and other gases, and prevent high-temperature gas from damaging the collector and subsequent pipelines and equipment. At the same time, it reduces the safety risks of fire and explosion of hydrogen in a high-temperature environment, thereby improving the safety and stability of the device operation. The gas temperature is reduced to an appropriate level by the cooler, which is conducive to the subsequent compression, storage and further purification of hydrogen, thereby improving the process compatibility and application flexibility of the overall system.

[0013] Furthermore, an anti-corrosion lining is attached to the inner wall of the steam circulation channel.

[0014] The anti-corrosion lining attached to the inner wall of the steam circulation channel can effectively resist the corrosion and erosion of the metal matrix by high-temperature steam and the corrosive media it may carry, prevent the inner wall material from being corroded and damaged, thereby significantly extending the service life of the equipment. The anti-corrosion lining can continuously protect the inner wall of the channel, prevent structural hazards such as wall thinning and leakage caused by corrosion, ensure the stable operation and sealing performance of the steam circulation channel, and reduce maintenance frequency and operation and maintenance costs.

[0015] Furthermore, the outside of the steam circulation channel is wrapped with an insulation layer, and a heater is installed inside the insulation layer and closely connected to the steam circulation channel. The heater is used to heat the steam in the steam circulation channel and maintain a stable temperature.

[0016] The heater is installed closely to the outer wall of the steam circulation channel and works in conjunction with the insulation layer to accurately heat and regulate the temperature of the steam in the channel, ensuring that the steam temperature fluctuates within a preset range, meeting the process requirements for temperature stability, and improving the stability and controllability of process steps such as separation and reaction. By wrapping the insulation layer on the outside of the steam circulation channel, it effectively blocks heat from dissipating outward, significantly reduces energy loss, improves thermal energy utilization, and helps the system save energy and reduce consumption. Through continuous heating and insulation, it reduces condensation of steam in the channel due to lowered temperature.

[0017] Furthermore, the head end and the tail end of the steam circulation channel are connected to each other through a pipe, and a circulation switching valve is installed on the pipe connecting the head end and the tail end of the steam circulation channel. The circulation switching valve is used to control the opening and closing of the connection between the head end and the tail end of the steam circulation channel. A circulation pump is installed on the pipe connecting the head end and the tail end of the steam circulation channel. The circulation pump is used to drive steam to flow from the tail end of the steam circulation channel to the head end and form a steam circulation with the steam circulation channel.

[0018] The setting of the circulation switching valve enables the operator to flexibly open or close the end-to-end connecting pipelines according to process requirements, facilitates the adjustment and switching of the steam circulation status, and improves the flexibility and controllability of the system operation. The steam is driven to reflux in the system through the circulation pump, and the reflux path and flow are flexibly adjusted with the help of the circulation switching valve, which can make the steam contact with the medium to be treated multiple times, significantly improving the efficiency of hydrogen expulsion and removal, thereby improving the thoroughness of hydrogen removal. The setting of the circulation switching valve enables the operator to flexibly adjust the opening, closing and flow size of the steam reflux according to the real-time process conditions to ensure precise control of the dehydrogenation process.

[0019] Furthermore, the steam input end includes a steam inlet interface pipe, which is connected to and installed with a steam inlet valve and controls the on and off of steam entering the steam circulation channel through the steam inlet valve. The steam inlet interface pipe is connected to a booster pump and is connected to a steam generator through the booster pump. A safety valve is installed on the pipeline connecting the steam inlet valve and the steam generator, and the steam inlet interface pipe is connected to and installed with a flow meter.

[0020] The steam inlet valve is used to precisely control the on-off of steam entering the steam circulation channel. The steam input amount and timing can be flexibly adjusted according to actual process requirements to ensure the stability and consistency of the process and prevent process fluctuations caused by excess or insufficient steam. The setting of the booster pump allows the steam pressure to be adjusted on demand to meet the diverse steam pressure requirements of different process sections, enhance the adaptability of the system, and improve the efficiency of dehydrogenation or other related processes. A safety valve is installed on the connecting pipe between the steam inlet valve and the steam generator to automatically release pressure when the system pressure rises abnormally, effectively preventing equipment damage or safety accidents caused by excessive pressure, and improving the safety and reliability of system operation.

[0021] Furthermore, the steam discharge end includes a steam outlet interface pipe, which is connected to and installed with a steam outlet valve and adjusts the flow rate of steam discharged from the steam circulation channel through the steam outlet valve. The steam outlet interface pipe is connected to and provided with a buffer chamber, and is connected to the steam utilization end through the buffer chamber. The steam outlet interface pipe is connected to a condensation duct, and a drain valve is installed on the condensation duct.

[0022] The steam discharge flow rate can be flexibly adjusted through the steam outlet valve, and the residence time and flow rate of steam in the system can be reasonably controlled according to process requirements, thereby optimizing dehydrogenation and other related processes, improving process stability and efficiency. The steam outlet interface pipe is connected to the buffer chamber, which effectively alleviates and absorbs pressure fluctuations in the pipeline, prevents instantaneous steam discharge from impacting downstream equipment or process flow, and improves the stability and safety of system operation. Steam is easily condensed into water in the pipeline during the discharge process. The condensation conduit and the drain valve on it can discharge the condensed water in time to prevent moisture accumulation in the pipeline, avoid affecting the steam flow and the normal operation of downstream equipment, and extend the service life of the system.

[0023] Furthermore, it also includes a monitoring system, which includes a temperature sensor, a pressure sensor and a hydrogen concentration sensor. The temperature sensor and pressure sensor are respectively installed at the steam input end, the steam exhaust end, the steam circulation channel and the filter component. The hydrogen concentration sensor is respectively installed at the steam input end, the steam exhaust end and the filter component. The temperature sensor, pressure sensor and hydrogen concentration sensor are communicatively connected to a data acquisition terminal, and the data acquisition terminal is connected to a data storage unit, a main control processor, a data display and a safety alarm.

[0024] Temperature, pressure and hydrogen concentration sensors are arranged at key locations, which can carry out multi-point real-time monitoring of the system operation status, fully grasp the process parameters, and detect anomalies in time. The safety alarm and the main control processor work together to issue an alarm to reduce the probability of safety accidents. All sensor data are uniformly summarized in the data acquisition terminal and connected to the data storage unit to achieve complete recording of historical operation data, which is conducive to subsequent process analysis, fault tracing and process parameter optimization and adjustment. The data display can display the temperature, pressure and hydrogen concentration data of each measuring point in real time, which is convenient for operators to intuitively grasp the system operation status and improve inspection and maintenance efficiency.

[0025] In summary, the present invention has the following beneficial technical effects: 1. Use high-temperature ceramic membrane filter core tube to achieve efficient permeation separation of hydrogen components in steam, improve hydrogen recovery rate, and promote resource recycling.

[0026] 2. High-temperature ceramics and anti-corrosion linings are used in key parts such as filter components and pipe inner walls, which significantly improves the stability and service life of the device in high temperature and corrosive environments.

[0027] 3. The steam circulation channel is equipped with an external insulation layer and heater, which cooperates with the circulation pump and switching valve to effectively maintain and adjust the steam temperature and flow state in the channel to meet the process requirements.

[0028] 4. A negative pressure pump is used to create a negative pressure environment in the filter chamber to accelerate hydrogen penetration and extraction, further improving the separation rate and system efficiency.

[0029] 5. The discharge end is equipped with a buffer chamber, condensation conduit and drain valve, which can promptly remove condensed water and impurities, ensure smooth steam flow and prevent system blockage.

[0030] 6. Temperature, pressure, and hydrogen concentration sensors are distributed at key nodes of the system to monitor operating parameters in real time, ensure that the operating status is controllable, and provide timely warnings of abnormalities.

[0031] 7. The monitoring system integrates data acquisition, storage, and main control processor to realize automatic data analysis, fault diagnosis and alarm linkage, and improve the level of automation and intelligence.

[0032] 8. The inlet and outlet ends are equipped with flow meters, inlet and outlet steam valves, booster pumps, safety valves, etc., which can adjust the steam flow and pressure as needed to meet different working conditions.

[0033] 9. Multiple safety measures such as one-way valve to prevent backflow, safety valve to prevent overpressure, main control alarm linkage, etc. are set to significantly reduce the risk of accidents and protect the safety of equipment and personnel.

[0034] 10. The functional components of the system are clearly divided, the parameters are traceable, the data can be queried, and the structure is easy to disassemble and assemble, which is convenient for daily maintenance, overhaul and process optimization and upgrading. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the three-dimensional structure of the installation structure of the present invention; Figure 2 It is a schematic diagram of the front view structure of the present invention; Figure 3 This is a side structural schematic diagram of the present invention; Figure 4 This is a schematic cross-sectional view of the filter assembly of the present invention at the vertical center plane; Figure 5 for Figure 4 A local enlarged schematic diagram of point A.

[0036] Description of reference numerals: 1. Steam input end, 11. Steam inlet interface pipe, 111. Booster pump, 12. Steam inlet valve, 121. Safety valve, 13. Flow meter, 2. Steam discharge end, 21. Steam outlet interface pipe, 211. Buffer chamber, 22. Steam outlet valve, 23. Condensation duct, 231. Drain valve, 3. Steam circulation channel, 31. Anti-corrosion lining, 32. Insulation layer, 321. Heater, 33. Circulation switching valve, 331. Circulation pump, 4. Filter assembly, 41. Filter core tube, 411. Filter chamber wall, 42. Negative pressure pump, 43. Collector, 431. One-way valve, 432. Cooler. DETAILED DESCRIPTION

[0037] The following will be combined with the Figure 1-Figure 5 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] High-temperature ceramic membrane hydrogen filtration technology utilizes the selective permeability characteristics of high-temperature ceramic membrane materials to separate hydrogen from other gas components under high temperature conditions. Ceramic membranes usually have a stable microporous structure and high chemical stability and can work for a long time in steam or high-temperature atmospheres.

[0040] Selective permeation mechanism: The micropore size of the high-temperature ceramic membrane and the chemical properties of the membrane material enable hydrogen molecules to pass through the membrane layer preferentially, while larger or gas molecules with different polarity (such as steam, oxygen, nitrogen, etc.) are blocked, thereby achieving effective separation of hydrogen from other gases.

[0041] High-temperature operation: This technology typically operates at temperatures of hundreds or even thousands of degrees Celsius, which facilitates direct connection with high-temperature industrial gases (such as steam, synthesis gas, etc.) without the need for cooling, reducing energy consumption and process complexity.

[0042] High-temperature ceramic membranes are generally made of ceramic materials such as alumina (Al2O3), zirconium oxide (ZrO2), and barium titanate (BaTiO3), and have the following characteristics: High temperature resistance: can work stably in an environment above 700℃ and is not easy to soften or decompose; Strong corrosion resistance: good resistance to acid, alkali steam, high temperature gas corrosive substances; High mechanical strength: stable structure, strong resistance to pressure and impact, suitable for industrial continuous operation; Uniform and controllable pore size: The micropore size is precisely designed to facilitate the selective permeation of hydrogen.

[0043] Basic Example: The embodiment of the present invention discloses a hydrogen separation device for an electrode steam boiler based on a high temperature ceramic membrane, referring to Figure 1 , including a steam input end 1, a steam exhaust end 2 and a steam circulation channel 3. The steam input end 1 and the steam exhaust end 2 are respectively connected to the two ends of the steam circulation channel 3 to form a steam guiding channel together, and the steam input end 1 and the steam exhaust end 2 are respectively connected to an external steam generator and a steam utilization end. A filter component 4 is installed in the steam circulation channel 3. The filter component 4 guides the steam to be transported in the steam circulation channel 3, and collects the hydrogen component in the steam through a filter permeation membrane made of a high-temperature ceramic membrane.

[0044] Connect the steam input end 1 to the steam generator through a pipe to ensure good sealing to avoid steam leakage. Connect the steam discharge end 2 to the steam utilization end through a pipe to ensure sealing and safe connection. The steam circulation channel 3 is fixedly installed on the support frame along the predetermined path to ensure that its structure is stable and can withstand steam pressure and temperature. The filter component 4 is built into the steam circulation channel 3 and the position should be convenient for uniform distribution of steam flow. The high-temperature ceramic membrane in the filter component 4 should be installed in a special membrane frame. The membrane frame and the inner wall of the pipe should be sealed to prevent steam bypass. High-temperature resistant sealing materials are used at the connection to avoid high-temperature steam leakage.

[0045] Temperature and pressure sensors are installed at both ends of the steam circulation channel 3 to monitor the operating status in real time. A hydrogen collection interface and a hydrogen transmission pipeline are installed to ensure that the hydrogen collected from the filter permeation membrane can be safely transported to the storage or utilization device. A safety valve and a pressure relief device are installed to avoid system overpressure. Explosion-proof and fire-proof measures are configured to ensure safe operation of the system because hydrogen is flammable and explosive.

[0046] Check all connecting pipes and seals to confirm that there are no leaks, confirm that the hydrogen collection pipeline is unobstructed, the storage tank is empty and sealed, and check that the sensors and control systems are working properly.

[0047] Start the steam generator and allow steam to enter the steam circulation channel 3 through the steam input end 1. When the steam flows in the steam circulation channel 3, it passes through the filter component 4, and the high-temperature ceramic membrane begins to separate the hydrogen in the steam. The hydrogen permeates through the ceramic membrane to the other side of the membrane and is collected by the hydrogen collection system.

[0048] Maintain steam flow rate and pressure within the design range to ensure separation efficiency, monitor temperature, pressure and hydrogen production in real time, adjust operating parameters, and regularly check the integrity and permeability of the filter assembly 4 and ceramic membrane to prevent blockage or damage.

[0049] During shutdown, gradually reduce the steam generator output, slowly reduce the steam flow, shut down the hydrogen collection system, ensure that the hydrogen in the pipeline is safely discharged or stored, close all valves, and perform equipment maintenance.

[0050] High-temperature ceramic membranes have excellent high-temperature and corrosion resistance, and are suitable for long-term stable operation in steam environments. Their pore structure and material properties allow hydrogen molecules to preferentially permeate through the membrane layer, while steam and other impurities are blocked. By designing a reasonable steam circulation channel 3 and filter components, uniform steam flow is achieved, and the hydrogen separation efficiency on the membrane surface is optimized. By utilizing the small size and fast diffusion rate of hydrogen molecules, under high-temperature conditions, hydrogen molecules pass through the pores of the ceramic membrane or through the selective diffusion of the membrane material, achieving efficient separation from steam. The device is integrated into the electrode steam boiler system and can separate hydrogen while generating steam, achieving energy conservation, emission reduction and hydrogen resource recovery.

[0051] The working temperature of the ceramic membrane needs to be kept within its design temperature range. Too high or too low may cause the membrane performance to deteriorate or be damaged. Impurities in the steam, such as solid particles and oil stains, may clog the pores of the ceramic membrane. Steam pretreatment and filtration should be ensured to be sufficient. Hydrogen is flammable and explosive. The hydrogen collection and transportation system must be well sealed to avoid leakage. The site should be equipped with a hydrogen detection alarm device, and the filter components should be cleaned and replaced regularly. The integrity of the membrane should be checked to prevent cracks or aging. The system power supply should be disconnected and the steam inlet should be closed during maintenance to ensure safety. Long-term operation requires relying on an automated monitoring system to detect abnormalities in a timely manner and ensure stable operation of the equipment.

[0052] Reference Figure 4 indivual Figure 5 The filter assembly 4 includes a filter core tube 41, which is a hollow tube made of a high-temperature ceramic membrane. One side of the filter core tube 41 is connected to the steam circulation channel 3 and forms a steam delivery cavity, and the other side of the filter core tube 41 is combined with the filter cavity wall 411 to form a filter cavity.

[0053] Reference Figure 1-Figure 3 The filter assembly 4 includes a negative pressure pump 42, and one suction end of the negative pressure pump 42 is connected to the filter cavity. The negative pressure pump 42 forms a negative pressure environment in the filter cavity by sucking the gas in the filter cavity.

[0054] Reference Figure 1-Figure 3 One end of the negative pressure pump 42 is connected to the collector 43 , and a one-way valve 431 is installed on the pipeline connecting the collector 43 and the negative pressure pump 42 . The collector 43 is connected to and installed with a cooler 432 .

[0055] Install the filter assembly 4 at a designated position inside the steam circulation channel 3, ensure that the filter core tube 41 is connected to the steam circulation channel 3 to form a steam delivery cavity, and the steam circulation channel 3 and the filter cavity wall 411 are sealed and combined to form an independent filter cavity. The filter core tube 41 should be firmly fixed to prevent displacement due to steam shock or vibration during operation. High-temperature resistant sealing rings or ceramic sealing pads are used at the sealing parts to prevent steam leakage.

[0056] The suction end of the negative pressure pump 42 is connected to the filter cavity (i.e., the space enclosed by the filter core tube 41 and the filter cavity wall 411) through a high-temperature corrosion-resistant pipe to ensure that the pipe is reliably sealed to prevent external air from entering. The outlet end of the negative pressure pump 42 is connected to the collector 43 through a pipe. A one-way valve 431 is installed on the pipe to ensure that the gas can only flow to the collector in one direction to prevent backflow. The collector 43 is installed in a position that is convenient for maintenance and is connected to the cooler 432. The cooler should be tightly connected to the collector outlet. During installation, ensure that the water inlet and outlet or cooling medium pipes of the cooler are smooth.

[0057] Start the steam generator, and steam enters the steam circulation channel 3 from the steam input end 1, flows through the outside of the filter core tube 41 to form a steam delivery chamber, and starts the negative pressure pump 42 to form a negative pressure in the filter chamber (the space enclosed by the inside of the filter core tube 41 and the filter chamber wall 411). The hydrogen in the steam preferentially penetrates into the filter chamber through the filter core tube 41 made of high-temperature ceramic membrane material at high temperature.

[0058] The negative pressure pump 42 pumps the gas in the filter chamber to the collector 43. The one-way valve 431 ensures the one-way flow of the gas. The gas in the collector 43 flows through the cooler 432. The cooler lowers the temperature, increases the gas compression rate, and separates relatively pure hydrogen. The separated hydrogen can be stored or further utilized.

[0059] Reference Figure 4 and Figure 5 An anti-corrosion lining 31 is attached to the inner wall of the steam circulation channel 3.

[0060] Reference Figures 1-4 The outside of the steam circulation channel 3 is wrapped with an insulation layer 32, and a heater 321 is installed inside the insulation layer 32 and closely connected to the steam circulation channel 3. The heater 321 is used to heat the steam in the steam circulation channel 3 and maintain a stable temperature.

[0061] Reference Figure 1-Figure 3 The head end and the tail end of the steam circulation channel 3 are connected to each other through a pipe. A circulation switching valve 33 is installed on the pipe connecting the head end and the tail end of the steam circulation channel 3. The circulation switching valve 33 is used to control the opening and closing of the connection between the head end and the tail end of the steam circulation channel 3. A circulation pump 331 is installed on the pipe connecting the head end and the tail end of the steam circulation channel 3. The circulation pump 331 is used to drive steam to flow from the tail end of the steam circulation channel 3 to the head end and form a steam circulation with the steam circulation channel 3.

[0062] The steam circulation channel 3 is made of high-temperature resistant and corrosion-resistant materials, and the inner wall is pre-attached with an anti-corrosion lining 31. The anti-corrosion lining 31 should be tightly combined with the inner wall of the channel, and a high-temperature adhesive or mechanical fixation method is used to ensure stability. There should be no falling off or hollowing. The steam circulation channel 3 is installed on a support frame or frame to ensure that the structure is firm and can withstand the pressure and vibration generated by the steam flow.

[0063] An insulation layer 32 is evenly wrapped around the outside of the steam circulation channel 3. The insulation layer is made of high-efficiency thermal insulation material (such as aluminum silicate fiber, mineral wool, etc.). The thickness is determined based on heat loss calculations to ensure thermal stability. A heater 321 is installed inside the insulation layer 32 and close to the surface of the steam circulation channel 3. The heater 321 can be an electric heating tape or an electric heating tube. During installation, ensure that the heater is in close contact with the pipe surface to avoid heat loss. Protective measures should be set for the power cord and control device of the heater 321 to prevent damage from high temperature and leakage.

[0064] Start the steam generator to allow the steam input end 1 to enter the steam circulation channel 3. Adjust the power of the circulation pump 331 according to the residual hydrogen to drive the steam to flow from the tail end to the head end of the steam circulation channel 3 to form a closed circulation flow. By controlling the circulation switching valve 33, select the steam circulation path to ensure uniform circulation of steam.

[0065] The heater 321 is started to keep the steam temperature in the steam circulation channel 3 stable at the set value to prevent the steam temperature fluctuation from affecting the hydrogen separation efficiency. The heater power is automatically adjusted through the temperature sensor feedback to achieve precise temperature control.

[0066] Example 1: On the basis of the above basic embodiment, the following are added: Reference Figure 1-Figure 3 The steam input end 1 includes a steam inlet interface pipe 11, on which a steam inlet valve 12 is connected and installed, and the steam entering the steam circulation channel 3 is controlled by the steam inlet valve 12. The steam inlet interface pipe 11 is connected to a booster pump 111 and is connected to the steam generator through the booster pump 111. A safety valve 121 is installed on the pipeline connecting the steam inlet valve 12 and the steam generator, and the steam inlet interface pipe 11 is connected and installed with a flow meter 13.

[0067] The steam inlet interface pipe 11 is made of high-temperature resistant and corrosion-resistant metal materials. One end is connected to the steam generator outlet and the other end is connected to the inlet flange of the steam circulation channel 3. The flange connection should be sealed reliably. The pipeline should be installed firmly and the support points should be reasonable to prevent loosening or deformation due to vibration during operation. The booster pump 111 is installed on the side of the steam inlet interface pipe 11 close to the steam generator. The pump body and the pipeline are connected with flanges or threads. All seals should be made of high-temperature resistant materials. The safety valve 121 is installed on the pipeline between the steam inlet valve 12 and the steam generator. It should be installed vertically with the outlet facing downward or leading to a safe discharge area. The set pressure of the safety valve should be slightly higher than the normal working pressure but lower than the maximum allowable pressure of the system to ensure timely discharge of steam in case of overpressure to ensure equipment safety. The flowmeter 13 is installed on the steam inlet interface pipe 11, close to the inlet of the steam circulation channel 3. The flowmeter should be a vortex flowmeter or electromagnetic flowmeter suitable for high-temperature and high-pressure steam.

[0068] All exposed pipes are wrapped with insulation to reduce heat dissipation and heat loss.

[0069] Start the steam generator, and after it reaches the set pressure and temperature, start the booster pump 111 to ensure that the steam pressure meets the subsequent system requirements, slowly open the steam inlet valve 12, adjust the steam flow entering the steam circulation channel 3, and prevent instantaneous pressure shocks. Monitor the flow meter 13 reading in real time, adjust the steam inlet valve 12 to the required flow, and ensure stable steam input. During operation, if the pressure rises abnormally, the safety valve 121 will automatically open to release excess steam to protect the system safety. Continuously monitor the data of the flow meter 13, pressure gauge and thermometer to keep each parameter within the set range. Appropriately adjust the opening of the steam inlet valve 12 according to process requirements to achieve precise control of the steam input. Regularly check the operating status of the booster pump 111 to prevent overheating or abnormal vibration of the pump body.

[0070] Example 2: On the basis of the above basic embodiment, the following are added: Reference Figure 1-Figure 3 The steam discharge end 2 includes a steam outlet interface pipe 21, which is connected to and installed with a steam outlet valve 22 and the steam outlet valve 22 is used to adjust the flow rate of steam discharged from the steam circulation channel 3. The steam outlet interface pipe 21 is connected to and provided with a buffer chamber 211, and is connected to the steam utilization end through the buffer chamber 211. The steam outlet interface pipe 21 is connected to a condensation conduit 23, and a drain valve 231 is installed on the condensation conduit 23.

[0071] As the system runs, the steam outlet valve 22 is opened and gradually adjusted to control the steam to flow from the steam circulation channel 3 into the buffer chamber 211 and then into the steam utilization end. According to the process requirements, the opening of the steam outlet valve 22 is slowly adjusted to control the steam discharge volume and flow rate to prevent pressure fluctuations caused by excessive instantaneous flow. The buffer chamber 211 acts as a buffer when the steam flow or pressure changes, ensuring stable pressure and flow at the downstream steam utilization end.

[0072] During operation, steam will generate condensed water when it encounters cooling on the wall of the pipe or buffer chamber 211. The condensed water will gather at the drain valve 231 through the condensation pipe 23. The drain valve 231 is opened manually or automatically periodically or according to the amount of condensed water to discharge the accumulated condensed water in time to avoid water hammer and affect the steam quality.

[0073] Example 3: On the basis of the above basic embodiment, the following are added: It also includes a monitoring system, which includes a temperature sensor, a pressure sensor and a hydrogen concentration sensor. The temperature sensor and the pressure sensor are respectively installed in the steam input end 1, the steam discharge end 2, the steam circulation channel 3 and the filter component 4. The hydrogen concentration sensor is respectively installed in the steam input end 1, the steam discharge end 2 and the filter component 4. The temperature sensor, the pressure sensor and the hydrogen concentration sensor are communicatively connected to a data acquisition terminal, and the data acquisition terminal is connected to a data storage unit, a main control processor, a data display and a safety alarm.

[0074] Temperature sensors are installed at key positions in the steam input end 1, steam discharge end 2, steam circulation channel 3 and filter assembly 4. The installation position should be able to accurately reflect the temperature of each section of steam or gas. They are usually installed on the inner wall of the pipeline or in direct contact with the fluid. The sensor probe should be firmly fixed and the interface should be well sealed to prevent steam leakage.

[0075] Pressure sensors are installed at the steam input end 1, steam discharge end 2, steam circulation channel 3 and pressure monitoring points in the filter assembly 4. During installation, it is necessary to ensure that the pressure measuring port of the sensor is connected to the pressure in the pipeline and use high-pressure seals for installation to ensure accurate measurement and no leakage.

[0076] The hydrogen concentration sensor is installed in the gas space or gas flow path of the steam input end 1, the steam exhaust end 2 and the filter component 4 respectively. The sensor should be installed in a well-ventilated and easy-to-maintain location to avoid dust accumulation and liquid immersion. During installation, ensure that the sensor probe is in full contact with the measured gas to improve detection sensitivity.

[0077] All temperature sensors, pressure sensors and hydrogen concentration sensors are connected to the data acquisition terminal through high-temperature and corrosion-resistant signal lines. The signal lines should be laid away from high-temperature, high-electromagnetic interference and mechanical vibration areas. Shielding or protective sleeves should be installed when necessary. The data acquisition terminal should be fixedly installed in the control cabinet or operation room for easy maintenance and operation. The display should be installed in a position that is easy for the operator to observe. The alarm should have sound and light alarm functions to ensure timely reminders in case of abnormalities.

[0078] When the system is running, the temperature sensor monitors the temperature of each key point, the pressure sensor monitors pressure changes, and the hydrogen concentration sensor detects potential hydrogen leaks. The data of each sensor can be viewed in real time through the data display to monitor the operating status of the system. The main control processor performs data analysis, trend prediction and abnormality judgment based on the collected data. When the temperature, pressure or hydrogen concentration exceeds the preset safety threshold, the safety alarm will emit an audible and visual alarm to remind the operator to deal with it in time.

[0079] The data acquisition terminal stores all sensor data in the data storage unit, supports historical data query and analysis, and uses the stored data for equipment health assessment, fault diagnosis and maintenance plan formulation.

[0080] The above content is merely an example and explanation of the structure of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in a similar manner. As long as they do not deviate from the scope defined by the structure of the invention, they should all fall within the scope of protection of the present invention.

Claims

1. A hydrogen separation device for an electrode steam boiler based on a high-temperature ceramic membrane, comprising a steam input end (1), a steam discharge end (2) and a steam circulation channel (3), wherein the steam input end (1) and the steam discharge end (2) are respectively connected to the two ends of the steam circulation channel (3) to form a steam guide channel, and the steam input end (1) and the steam discharge end (2) are respectively connected to a steam generator and a steam utilization end, characterized in that: A filter assembly (4) is installed in the steam circulation channel (3), and the filter assembly (4) guides the steam to be transported in the steam circulation channel (3) and collects hydrogen components in the steam through a filter permeation membrane made of a high-temperature ceramic membrane.

2. The hydrogen separation device for a high-temperature ceramic membrane-based electrode steam boiler according to claim 1, characterized in that: The filter assembly (4) comprises a filter core tube (41), which is a hollow tube made of a high-temperature ceramic membrane. One side of the filter core tube (41) is connected to the steam circulation channel (3) to form a steam delivery cavity, and the other side of the filter core tube (41) is combined with the filter cavity wall (411) to form a filter cavity.

3. The hydrogen separation device for a high-temperature ceramic membrane-based electrode steam boiler according to claim 2, characterized in that: The filter assembly (4) comprises a negative pressure pump (42), wherein an air suction end of the negative pressure pump (42) is connected to the filter cavity, and the negative pressure pump (42) forms a negative pressure environment in the filter cavity by sucking the gas in the filter cavity.

4. The hydrogen separation device for a high-temperature ceramic membrane-based electrode steam boiler according to claim 3, characterized in that: One end of the negative pressure pump (42) is connected to the collector (43) at its outlet. A one-way valve (431) is installed on the pipeline connecting the collector (43) and the negative pressure pump (42). The collector (43) is connected to and installed with a cooler (432).

5. The hydrogen separation device for a high-temperature ceramic membrane-based electrode steam boiler according to claim 1, characterized in that: An anti-corrosion lining (31) is attached to the inner wall of the steam circulation channel (3).

6. The hydrogen separation device for a high-temperature ceramic membrane-based electrode steam boiler according to claim 1, characterized in that: The outside of the steam circulation channel (3) is wrapped with a heat-insulating layer (32), and a heater (321) is installed in the heat-insulating layer (32) and connected closely to the steam circulation channel (3). The heater (321) is used to heat the steam in the steam circulation channel (3) and maintain a stable temperature.

7. The hydrogen separation device for a high-temperature ceramic membrane-based electrode steam boiler according to claim 1, characterized in that: The head end and the tail end of the steam circulation channel (3) are connected to each other through a pipe. A circulation switching valve (33) is installed on the pipe connecting the head end and the tail end of the steam circulation channel (3). The circulation switching valve (33) is used to control the opening and closing of the connection between the head end and the tail end of the steam circulation channel (3). A circulation pump (331) is installed on the pipe connecting the head end and the tail end of the steam circulation channel (3). The circulation pump (331) is used to drive steam to flow from the tail end of the steam circulation channel (3) to the head end and form a steam circulation with the steam circulation channel (3).

8. The hydrogen separation device for a high-temperature ceramic membrane-based electrode steam boiler according to claim 1, characterized in that: The steam input end (1) comprises a steam inlet interface pipe (11), a steam inlet valve (12) being connected to and installed on the steam inlet interface pipe (11) and controlling the on-off of steam entering the steam circulation channel (3) via the steam inlet valve (12), the steam inlet interface pipe (11) being connected to a booster pump (111) and connected to a steam generator via the booster pump (111), a safety valve (121) being installed on the pipe connecting the steam inlet valve (12) and the steam generator, and a flow meter (13) being connected to and installed on the steam inlet interface pipe (11).

9. The hydrogen separation device for a high-temperature ceramic membrane-based electrode steam boiler according to claim 1, characterized in that: The steam discharge end (2) comprises a steam outlet interface pipe (21), a steam outlet valve (22) is connected to and installed on the steam outlet interface pipe (21), and the flow rate of steam discharged from the steam circulation channel (3) is regulated by the steam outlet valve (22), the steam outlet interface pipe (21) is connected to and provided with a buffer chamber (211), and is externally connected to a steam utilization end via the buffer chamber (211), the steam outlet interface pipe (21) is connected to a condensation conduit (23), and a drain valve (231) is installed on the condensation conduit (23).

10. The hydrogen separation device for a high-temperature ceramic membrane-based electrode steam boiler according to claim 1, characterized in that: The system also includes a monitoring system, which includes a temperature sensor, a pressure sensor, and a hydrogen concentration sensor. The temperature sensor and the pressure sensor are respectively installed in the steam input end (1), the steam discharge end (2), the steam circulation channel (3), and the filter component (4). The hydrogen concentration sensor is respectively installed in the steam input end (1), the steam discharge end (2), and the filter component (4). The temperature sensor, the pressure sensor, and the hydrogen concentration sensor are communicatively connected to a data acquisition terminal. The data acquisition terminal is connected to a data storage unit, a main control processor, a data display, and a safety alarm.

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