Apparatus and method for continuous feeding of biomass liquid high temperature gasification

Abstract

The application relates to the technical field of biomass liquid gasification, and discloses a device and a method for continuous feeding of biomass liquid high-temperature gasification, the device comprising a gasification furnace, the top side of the gasification furnace being slidably connected with a spline shaft through a bearing block, the bottom of the spline shaft being fixedly connected with a demisting screen, the inner top wall of a mounting frame being fixedly connected with a fixed plate, the inside of the fixed plate being rotatably connected with a rotating shaft, the outer wall of the rotating shaft being fixedly connected with a cam, the outer wall of a connecting plate being fixedly connected with a connecting block, the inside of the connecting block being slidably connected with a supporting rod, and the top of the connecting block and the gasification furnace being fixedly connected with a spring one. The cam rotates with the rotating shaft, intermittently pushes the connecting plate to stretch the spring one, the spring one is reset to drive the spline shaft and the demisting screen to reciprocate, water mist and tar liquid beads are intercepted to flow back to a reaction zone when flue gas passes through the demisting screen, the mist drop capturing effect is improved, and the downstream pipeline is reduced in scaling.

Description

Technical Field

[0001] This invention relates to the field of biomass liquid gasification technology, specifically to an apparatus and method for continuous feeding of biomass liquid at high temperature gasification. Background Technology

[0002] Biomass liquefaction is a liquid material obtained from biomass raw materials such as straw, sawdust, and agricultural and forestry waste through processes such as liquefaction, pyrolysis, and hydrolysis. It has a complex composition and contains impurities such as heavy tar and fine solid carbon residue. High-temperature gasification of biomass liquefaction involves converting liquid biomass raw materials into combustible syngas, which is mainly composed of carbon monoxide and hydrogen, under high-temperature conditions. Syngas can be used for combustion heating, power generation, or further preparation of chemical raw materials, which is an important way to utilize biomass resources.

[0003] The existing biomass liquid high-temperature gasification furnace uses a continuous feeding system to quantitatively pump and atomize biomass liquid into the high-temperature gasification furnace. Under the action of high temperature and gasification agent, it completes evaporation, pyrolysis, partial oxidation and reforming, generates combustible gas and continuously discharges slag, thus realizing the gasification of biomass liquid.

[0004] The inventors of this application discovered in their research that the core defect of the aforementioned prior art is that: when a traditional gasifier is operating, it needs to be used in conjunction with a demisting net to intercept the water mist generated in the gas. After long-term operation, the traditional fixed wire mesh demisting structure is easily clogged by tar and dust, resulting in a rapid decline in demisting efficiency. A large number of unpyrolyzed tar droplets directly enter the downstream pipeline, easily condense and adhere to the low-temperature pipe wall, forming scale that is difficult to clean and causing pipeline blockage. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a device and method for continuous feeding of biomass liquid at high temperature gasification, solving the problem that traditional fixed wire mesh demisting structures are easily clogged by tar and dust after long-term operation, and easily condense and adhere to the low-temperature pipe wall to form scale that is difficult to clean, causing pipeline blockage.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a device for continuous feeding of biomass liquid high-temperature gasification, comprising a gasifier, a splined shaft slidably connected to the top side of the gasifier via a bearing seat, a demisting screen fixedly connected to the bottom of the splined shaft, an installation frame fixedly connected to the top of the gasifier, a fixing plate fixedly connected to the inner top wall of the installation frame, a rotating shaft rotatably connected inside the fixing plate, a cam fixedly connected to the outer wall of the rotating shaft, the convex end of the cam being used for lifting and lowering a connecting plate when it moves, the bottom of the connecting plate fixedly connected to the top of the splined shaft, a connecting block fixedly connected to the outer wall of the connecting plate, a support rod slidably connected inside the connecting block, the two ends of the support rod being fixedly connected to the top of the gasifier and the inner top wall of the installation frame respectively, a spring fixedly connected between the connecting block and the top of the gasifier, and a rotating component for promoting gasification effect installed inside the gasifier.

[0007] By adopting the above technical solution, the cam moves synchronously with the rotating shaft in a circular motion, intermittently pushing the bottom of the connecting plate upwards. This causes the connecting block to slide along the support rod axis and stretch the first spring. After the cam protrusion passes the highest point, the pre-stretched spring quickly pulls the entire assembly downwards to reset, driving the spline shaft and the bottom demister to complete a high-frequency up-and-down reciprocating linear motion. When the high-temperature mixed flue gas generated by gasification flows upwards through the dynamically moving demister, the fine water mist droplets and incompletely decomposed tar droplets carried in the flue gas are repeatedly collided and intercepted. The agglomerated and grown droplets fall back to the high-temperature reaction zone of the gasifier by their own weight to participate in the decomposition reaction again. This improves the collection efficiency of fine tar droplets, reduces the entry of liquid impurities into downstream pipelines and equipment, reduces the problem of condensation and scaling on the inner wall, and ensures the long-term stable operation of subsequent pipelines.

[0008] Preferably, the rotating assembly includes a rotating shaft, the top of which is fixedly connected to the bottom of a splined shaft, stirring blades are uniformly fixedly connected to the outer wall of the rotating shaft, and scrapers are symmetrically fixedly connected to the bottom of the rotating shaft, with the outer wall of the scrapers adhering to the inner wall of the gasifier.

[0009] Preferably, a drive motor is installed on the inner top wall of the mounting frame, a support shaft is fixedly connected to the output end of the drive motor, a drive bevel gear is fixedly connected to the outer wall of the support shaft, a driven bevel gear is meshed with the tooth end of the drive bevel gear, and the inner wall of the driven bevel gear is fixedly connected to the outer wall of the rotating shaft.

[0010] Preferably, a drive pulley is fixedly connected to the bottom of the support shaft, a belt is sleeved on the outer wall of the drive pulley, a driven pulley is provided on the inner wall of one end of the belt, the inner wall of the driven pulley is splined with the outer wall of the spline shaft, and the bottom of the driven pulley is fixedly connected to the top of the bearing seat.

[0011] Preferably, a mounting frame is fixedly connected to the outer wall of the gasifier, a conveying cylinder is installed inside the mounting frame, a feed pipe is fixedly connected to one side of the conveying cylinder, one end of the feed pipe is fixedly connected to the inside of the gasifier, a feed hopper is fixedly connected to one end of the conveying cylinder, a conveying motor is installed on the other side of the conveying cylinder, a connecting shaft is fixedly connected to the output end of the conveying motor, and a spiral auger is fixedly connected to the outer wall of the connecting shaft.

[0012] Preferably, a connecting frame is fixedly connected to the outer wall of the feed pipe, a sliding groove is formed between the feed pipe and the connecting frame, a sliding block is slidably connected in the sliding groove between the feed pipe and the connecting frame, protective covers are fixedly connected to both sides of the sliding block and the corresponding sides of the sliding groove, a flow baffle is fixedly connected to the bottom of the sliding block inside the feed pipe, a support plate is fixedly connected to the top of the sliding block inside the connecting frame, a connecting rod is fixedly connected to one side of the support plate, a sleeve is fixedly connected to one side of the outer wall of the connecting frame, the outer wall of the connecting rod is slidably connected to one side of the connecting frame and the inside of the sleeve, a second spring is fixedly connected to the opposite side of the connecting rod and the sleeve, an electrode plate is installed on one side of the support plate, an electrode ring is installed on the other side of the connecting frame, and an indicator light is installed on one side of the outer wall of the connecting frame.

[0013] Preferably, an air inlet pipe is fixedly connected to the middle of the gasifier, and an electromagnetic valve is installed on the outer wall of the air inlet pipe. The electromagnetic valve, electrode plate, electrode ring, and indicator light are electrically connected.

[0014] Preferably, heating tubes are evenly installed at the bottom of the gasifier, and a heat-conducting plate is installed on the inner wall of the bottom end of the gasifier.

[0015] Preferably, an exhaust pipe is fixedly connected to the top of the gasifier, a residual liquid recovery pipe is installed on the outer wall of the gasifier above the heat-conducting plate, an injection pipe is installed on the outer wall of the gasifier below the heat-conducting plate, and a discharge pipe is installed at the bottom of the gasifier. Valves are installed on the outer walls of the residual liquid recovery pipe, the injection pipe, and the discharge pipe.

[0016] A method for continuous feeding of biomass liquid high-temperature gasification includes the following steps: When in use, the device is started and the drive motor runs. The drive motor drives the support shaft to rotate. The support shaft drives the rotating shaft and cam to rotate through the active bevel gear and the driven bevel gear. The cam intermittently pushes the connecting plate, which, together with the spring, drives the spline shaft and the demisting screen to make up-down reciprocating linear motion. On the other hand, the support shaft drives the splined shaft to rotate circumferentially through the active pulley, toothed belt, and driven pulley. The splined shaft synchronously drives the rotating shaft, stirring blades, and scraper to rotate and move up and down at the same time, so as to stir and scrape the material inside the gasifier. When the flue gas produced by gasification passes through the reciprocating demister, the droplets flow back into the gasifier, and the gas is discharged through the exhaust pipe. During feeding, the connecting shaft and the screw conveyor are driven to rotate by the conveyor motor. The biomass liquid is put into the conveyor cylinder from the feed hopper and pushed by the screw conveyor through the feed pipe into the gasifier to complete the continuous feeding. When the biomass liquid flows through the feed pipe, it pushes the baffle plate, which moves the sliding block and support plate and stretches the second spring. The protective cover blocks material leakage. The electrode plate is inserted into the electrode ring to connect the circuit. The indicator light is on, the solenoid valve is opened, and the gas inlet pipe introduces high-temperature superheated steam into the gasifier. When the feed is interrupted, the second spring drives all components to reset, the circuit is disconnected, and the solenoid valve is closed to stop the gas supply. The heat transfer medium is pre-injected into the bottom cavity of the gasifier through the injection pipe. The heating pipe is turned on to heat the heat transfer medium. The heat is transferred to the reaction area of ​​the gasifier through the heat transfer plate. After gasification, the combustible gas is discharged from the exhaust pipe, the liquid residue is discharged from the residual liquid recovery pipe, and the waste heat transfer medium is discharged through the discharge pipe. Each pipeline is controlled by its own valve.

[0017] This invention provides an apparatus and method for continuous feeding of biomass liquid at high temperature gasification. It has the following beneficial effects: 1. This invention utilizes a cam that rotates synchronously with the rotating shaft, intermittently pushing the bottom of the connecting plate upwards. This causes the connecting block to slide axially along the support rod and stretch the spring. After the cam protrusion passes its highest point, the pre-stretched spring quickly pulls the entire assembly downwards to reset, driving the spline shaft and the bottom demister to complete a high-frequency reciprocating linear motion. When the high-temperature mixed flue gas generated by gasification flows upwards through the dynamically moving demister, the fine water mist droplets and incompletely decomposed tar droplets carried in the flue gas are repeatedly collided and intercepted. The agglomerated and grown droplets fall back to the high-temperature reaction zone of the gasifier under their own weight to participate in the decomposition reaction again. This improves the collection efficiency of fine tar droplets, reduces the entry of liquid impurities into downstream pipelines and equipment, reduces the problem of condensation and scaling on the inner wall, and ensures the long-term stable operation of subsequent pipelines.

[0018] 2. This invention synchronously drives the active pulley to rotate via a support shaft, and relies on belt meshing to drive the driven pulley. The inner wall of the driven pulley adopts a splined fit structure nested on the outside of the splined shaft. This can drive the splined shaft to rotate continuously without interfering with the axial lifting and lowering movement of the splined shaft. The splined shaft drives the bottom rotating shaft, multiple sets of stirring blades, and furnace wall scrapers to move synchronously. While rotating and stirring, they move up and down together with the splined shaft, realizing a full-range compound stirring action of rotating and lifting at the same time. This breaks the heat exchange stagnation layer inside the biomass liquid, eliminates the dead zone of liquid flow in the furnace, keeps the temperature difference of the material in the whole furnace within a very small range, improves the uniformity of the gasification reaction, and continuously scrapes off the coke and carbon deposits attached to the furnace wall, avoiding the impact of wall slag on heat exchange efficiency.

[0019] 3. In this invention, the axial thrust of the biomass liquid flowing in the feed pipe drives the baffle plate to move, causing the sliding block to slide smoothly along the groove. Simultaneously, the connecting rod is pulled to move axially along the sleeve and stretch the second spring. After the electrode plate moves to the preset position, it is fully inserted into the electrode ring, instantly connecting the entire conductive circuit. The indicator light lights up simultaneously and transmits an electrical signal to the control system. The solenoid valve on the outer wall of the air inlet pipe is precisely controlled to open synchronously to feed the gasifying agent. After the feeding stops, the liquid flow thrust disappears, the second spring quickly pulls the entire assembly to reset, and after the electrode plate is removed, the solenoid valve closes synchronously to stop the gas supply. This achieves synchronous linkage between the feeding action and the gas distribution action, avoiding the problems of insufficient gasification reaction and gas waste caused by premature or delayed gas supply. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a rear-view stereoscopic structural diagram of the present invention; Figure 3 This is a schematic cross-sectional view of the main body of the present invention; Figure 4 This is a schematic diagram of the internal structure of the mounting frame of the present invention; Figure 5 This is a schematic diagram of the internal structure of the conveying cylinder of the present invention; Figure 6 for Figure 5 Enlarged structural diagram at point A in the middle; Figure 7 This is a partial structural diagram of the rotating component of the present invention.

[0021] Among them, 1. Gasifier; 2. Splined shaft; 201. Demisting screen; 202. Mounting frame; 203. Fixing plate; 204. Rotating shaft; 205. Cam; 206. Connecting plate; 207. Connecting block; 208. Support rod; 209. Spring 1; 3. Rotating shaft; 301. Stirring blade; 302. Scraper; 4. Drive motor; 401. Support shaft; 402. Driving bevel gear; 403. Driven bevel gear; 5. Driving pulley; 501. Belt; 502. Driven pulley; 6. Mounting bracket; 601. Conveying cylinder; 602. Inlet 603. Feed pipe; 604. Feed hopper; 605. Conveyor motor; 606. Connecting shaft; 607. Spiral auger; 708. Connecting frame; 709. Sliding block; 7000. Baffle plate; 701. Support plate; 702. Connecting rod; 703. Sleeve; 704. Spring II; 705. Electrode plate; 706. Electrode ring; 707. Indicator light; 718. Protective cover; 719. Air inlet pipe; 710. Solenoid valve; 801. Heating tube; 802. Heat conducting plate; 903. Exhaust pipe; 904. Residual liquid recovery pipe; 905. Injection pipe; 906. Discharge pipe. Detailed Implementation

[0022] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see the appendix Figure 1 - Appendix Figure 7 This invention provides a device for continuous feeding of biomass liquid high-temperature gasification, including a gasifier 1. A splined shaft 2 is slidably connected to the top side of the gasifier 1 via a bearing seat. A demisting screen 201 is fixedly connected to the bottom of the splined shaft 2. A mounting frame 202 is fixedly connected to the top of the gasifier 1. A fixing plate 203 is fixedly connected to the inner top wall of the mounting frame 202. A rotating shaft 204 is rotatably connected inside the fixing plate 203. A cam 205 is fixedly connected to the outer wall of the rotating shaft 204. The protruding end of the cam 205... During operation, it is used for lifting and lowering the connecting plate 206. The bottom of the connecting plate 206 is fixedly connected to the top of the spline shaft 2. A connecting block 207 is fixedly connected to the outer wall of the connecting plate 206. A support rod 208 is slidably connected inside the connecting block 207. The two ends of the support rod 208 are fixedly connected to the top of the gasifier 1 and the inner top wall of the mounting frame 202, respectively. A spring 209 is fixedly connected between the connecting block 207 and the top of the gasifier 1. A rotating component for promoting gasification is installed inside the gasifier 1.

[0024] Specifically, the rotating shaft 204 drives the cam 205 to perform circular motion. Each rotation of the cam 205's protruding end intermittently applies a pushing force upwards to the bottom of the connecting plate 206. The connecting block 207 slides axially along the support rod 208, stretching the spring 209. When the protruding end of the cam 205 disengages from the bottom of the connecting plate 206, the stretched spring 209 pulls the connecting block 207 to quickly return to its original position, thereby causing the connecting plate 206, spline shaft 2, and demister 201 to synchronously complete reciprocating linear motion. When the mixed flue gas generated by the gasification reaction flows upwards through the demister 201, the reciprocating demister 201 can effectively intercept liquid droplets and tar droplets carried in the flue gas. The intercepted droplets drip under their own weight. The gas flows back to the reaction area of ​​gasifier 1 and is finally discharged outward through exhaust pipe 9. During the exhaust process at the top of gasifier 1, the reciprocating demister 201 repeatedly intercepts the upward overflowing high-temperature gasification tail gas, blocking the large amount of water mist droplets carried in the tail gas from flowing back into the gasifier 1. The reciprocating demister 201 can repeatedly intercept the upward overflowing high-temperature gasification tail gas, blocking the large amount of water mist droplets and tar droplets carried in it and flowing back into the gasifier 1, thereby reducing the entry of liquid water mist into downstream pipes and equipment, preventing tar and liquid water mist from condensing, adhering and scaling on the inner walls of downstream pipes and equipment, ensuring the stable operation of subsequent pipeline equipment. The rotating component breaks the heat exchange retention layer inside the biomass liquid, improving the uniformity of the gasification reaction in gasifier 1.

[0025] Please see the appendix Figure 3 Appendix Figure 4 Appendix Figure 7 The rotating assembly includes a rotating shaft 3, the top of which is fixedly connected to the bottom of a splined shaft 2. Stirring blades 301 are uniformly fixedly connected to the outer wall of the rotating shaft 3, and scrapers 302 are symmetrically fixedly connected to the bottom of the rotating shaft 3. The outer wall of the scrapers 302 is attached to the inner wall of the gasifier 1. A drive motor 4 is installed on the inner top wall of the mounting frame 202. The output end of the drive motor 4 is fixedly connected to a support shaft 401. A drive bevel gear 402 is fixedly connected to the outer wall of the support shaft 401. A driven bevel gear 403 is meshed with the tooth end of the drive bevel gear 402. The inner wall of the driven bevel gear 403 is fixedly connected to the outer wall of the rotating shaft 204. The bottom of the support shaft 401 is fixedly connected to the drive pulley 5. The outer wall of the drive pulley 5 is fitted with a belt 501. One end of the belt 501 is provided with a driven pulley 502. The inner wall of the driven pulley 502 is splined with the outer wall of the spline shaft 2. The bottom of the driven pulley 502 is fixedly connected to the top of the bearing seat.

[0026] Specifically, when the drive motor 4 is running, the output end drives the support shaft 401 to rotate synchronously, the support shaft 401 drives the active bevel gear 402 to rotate, which in turn causes the driven bevel gear 403 to drive the rotating shaft 204 to rotate, providing a stable power input for the continuous rotation of the cam 205; Simultaneously, the support shaft 401 drives the active pulley 5 to rotate. The active pulley 5 drives the driven pulley 502 to rotate synchronously via the belt 501. The inner wall of the driven pulley 502 adopts a spline fit structure and is nested on the outside of the spline shaft 2, so that it can drive the spline shaft 2 to perform circumferential rotation without interfering with the axial lifting and lowering movement of the spline shaft 2. The spline shaft 2 drives the rotating shaft 3 to rotate together. The rotating shaft 3 drives multiple sets of stirring blades 301 to stir the biomass liquid inside the gasifier 1. The scraper 302 always adheres to the inner wall of the gasifier 1 to perform circumferential scraping movement. During the process of the spline shaft 2 completing the up and down reciprocating lifting and lowering, the rotating shaft 3 will simultaneously drive the stirring blades 301 and the scraper 302 to complete the up and down movement together, realizing a compound stirring action of rotating and lifting at the same time, expanding the effective range of stirring disturbance, avoiding the phenomenon of local material stagnation dead zone in the furnace, breaking the heat exchange retention layer inside the biomass liquid, and improving the uniformity of gasification reaction in the gasifier 1. In addition, to ensure the stability and efficiency of the transmission structure, the belt 501 in this embodiment is a toothed belt 501 with internal teeth. Correspondingly, the driving pulley 5 and the driven pulley 502 in this embodiment are toothed pulleys with external teeth. In other embodiments, sprockets and chains can also be used to ensure the stability and efficiency of the transmission structure, which will not be elaborated here.

[0027] Please see the appendix Figure 1 - Appendix Figure 3 Appendix Figure 5 A mounting frame 6 is fixedly connected to the outer wall of the gasifier 1. A conveying cylinder 601 is installed inside the mounting frame 6. A feed pipe 602 is fixedly connected to one side of the conveying cylinder 601. One end of the feed pipe 602 is fixedly connected inside the gasifier 1. A feed hopper 603 is fixedly connected to one end of the conveying cylinder 601. A conveying motor 604 is installed on the other side of the conveying cylinder 601. A connecting shaft 605 is fixedly connected to the output end of the conveying motor 604. A spiral auger 606 is fixedly connected to the outer wall of the connecting shaft 605.

[0028] Specifically, during continuous feeding, the conveyor motor 604 is started, and its output drives the connecting shaft 605 to rotate at a constant speed inside the conveyor cylinder 601. This causes the auger 606 to move circumferentially. After the operator puts the biomass liquid to be processed into the feed hopper 603, the biomass liquid will be pushed forward at a constant speed along the axial direction of the conveyor cylinder 601 by the continuous blades of the auger 606. Finally, it is stably fed into the gasifier 1 through the feed pipe 602 connected to one side of the conveyor cylinder 601, realizing continuous, stable and quantitative conveying of biomass liquid. The entire feeding process is completed in a closed space, and there will be no problem of biomass liquid splashing or leakage.

[0029] Please see the appendix Figure 1 - Appendix Figure 3 Appendix Figure 5 Appendix Figure 6 A connecting frame 7 is fixedly connected to the outer wall of the feed pipe 602. A sliding groove is formed between the feed pipe 602 and the connecting frame 7. A sliding block 701 is slidably connected in the sliding groove between the feed pipe 602 and the connecting frame 7. Protective covers 710 are fixedly connected to the corresponding sides of the sliding groove on both sides of the sliding block 701. A flow baffle 702 is fixedly connected to the bottom of the sliding block 701 inside the feed pipe 602. A support plate 703 is fixedly connected to the top of the sliding block 701 inside the connecting frame 7. A connecting rod 704 is fixedly connected to one side of the support plate 703, and a sleeve 705 is fixedly connected to the outer wall of one side of the connecting frame 7. The outer wall of the connecting rod 704 is slidably connected to one side of the connecting frame 7 and the inside of the sleeve 705. A spring 706 is fixedly connected to the opposite side of the connecting rod 704 and the sleeve 705. An electrode plate 707 is installed on one side of the support plate 703, an electrode ring 708 is installed on the other side of the connecting frame 7, and an indicator light 709 is installed on the outer wall of one side of the connecting frame 7. An air inlet pipe 711 is fixedly connected to the middle of the gasifier 1. A solenoid valve 712 is installed on the outer wall of the air inlet pipe 711. The solenoid valve 712, electrode plate 707, electrode ring 708 and indicator light 709 are electrically connected.

[0030] Specifically, when the biomass liquid is conveyed into the gasifier 1 through the feed pipe 602, the flowing liquid will generate an axial thrust on the baffle plate 702. The protective covers 710 on both sides will completely block the gaps in the chute, preventing the biomass liquid from leaking into the connecting frame 7. Under the action of the liquid flow thrust, the sliding block 701 slides along the chute away from the feeding direction, driving the support plate 703 to move. This causes the support plate 703 to drive the connecting rod 704 to move axially along one side of the sleeve 705 and the connecting frame 7. At this time, the second spring 706 is... During synchronous stretching, the electrode plate 707 moves together with the support plate 703. With continuous feeding, the electrode plate 707 is fully inserted into the electrode ring 708, and the entire conductive circuit is instantly connected. The indicator light 709 lights up synchronously, and the electrical signal is transmitted synchronously to the control system of the gasifier 1 through the signal line. This controls the solenoid valve 712 installed on the outer wall of the gas inlet pipe 711 to open synchronously. The combustion reaction gas required for gasification is synchronously sent into the gasifier 1 and comes into full contact with the biomass liquid that has just entered the furnace to undergo a gasification reaction. When the feeding stops, the thrust of the liquid flow on the baffle plate 702 disappears, the stretched spring 706 will pull the connecting rod 704 to quickly reset, the electrode plate 707 will disengage from the electrode ring 708, the solenoid valve 712 will close synchronously, and the gas supply will stop. The gas distribution action is directly triggered by the thrust of the feeding liquid flow. The precise synchronous linkage between feeding and gas distribution can be achieved without the need for an additional flow sensor, avoiding problems such as insufficient gasification reaction and gas waste caused by premature or delayed gas supply. The air inlet pipe 711 is used to input the gasifying agent into the inner cavity of the gasifier 1. In this embodiment, the gasifying agent is high-temperature superheated steam. After the high-temperature superheated steam enters the furnace, a water-gas reaction occurs, which cracks the macromolecular tar components in the biomass liquid and generates combustible syngas mainly composed of hydrogen and carbon monoxide.

[0031] Please see the appendix Figure 2 Appendix Figure 7 Heating tubes 8 are evenly installed at the bottom of the gasifier 1, and a heat-conducting plate 801 is installed on the inner wall of the bottom end of the gasifier 1. An exhaust pipe 9 is fixedly connected to the top of the gasifier 1. A residual liquid recovery pipe 901 is installed on the outer wall of the gasifier 1 above the heat conduction plate 801. An injection pipe 902 is installed on the outer wall of the gasifier 1 below the heat conduction plate 801. A discharge pipe 903 is installed at the bottom of the gasifier 1. Valves are installed on the outer walls of the residual liquid recovery pipe 901, the injection pipe 902, and the discharge pipe 903.

[0032] Specifically, the operator injects a sufficient amount of heat-conducting medium into the cavity at the bottom of the furnace body through the injection pipe 902. The heat-conducting medium includes, but is not limited to, high-temperature molten salt. Then, multiple sets of heating tubes 8 are activated. The heat generated by the heating tubes 8 after being powered on directly heats the heat-conducting medium evenly. The heat-conducting plate 801 evenly conducts the heat of the heat-conducting medium to the biomass liquid area above, providing a continuous and stable high-temperature constant temperature environment for the gasification reaction. The heating tubes 8 adopt multiple high-temperature resistant designs to ensure long-term stable operation in high-temperature environments. After the gasification reaction is completed, the high-temperature combustible gas generated by gasification is discharged from the exhaust pipe 9. The remaining liquid residue after the reaction is discharged and recovered through the residual liquid recovery pipe 901. The used heat transfer medium is discharged through the discharge pipe 903. The independent valves installed on the outer walls of the residual liquid recovery pipe 901, the injection pipe 902 and the discharge pipe 903 are used to control the opening and closing of each pipeline individually.

[0033] Workflow: A method for continuous feeding of biomass liquid high-temperature gasification includes the following steps: When in use, the device is started and the drive motor 4 is running. The drive motor 4 drives the support shaft 401 to rotate. The support shaft 401 drives the rotating shaft 204 and the cam 205 to rotate via the active bevel gear 402 and the driven bevel gear 403. The cam 205 intermittently pushes the connecting plate 206, which, in conjunction with the spring 209, drives the spline shaft 2 and the demisting screen 201 to make up-down reciprocating linear motion. On the other hand, the support shaft 401 drives the spline shaft 2 to rotate circumferentially through the drive pulley 5, toothed belt 501, and driven pulley 502. The spline shaft 2 synchronously drives the rotating shaft 3, stirring blade 301, and scraper 302 to rotate and move up and down at the same time, so as to stir and scrape the material inside the gasifier 1. When the flue gas generated by gasification passes through the reciprocating demister 201, the droplets flow back to the gasifier 1, and the gas is discharged through the exhaust pipe 9. During feeding, the connecting shaft 605 and the screw conveyor 606 are driven to rotate by the conveyor motor 604. The biomass liquid is put into the conveyor cylinder 601 from the feed hopper 603 and pushed by the screw conveyor 606. It is then sent into the gasifier 1 through the feed pipe 602 to complete continuous feeding. When the biomass liquid flows through the feed pipe 602, it pushes the baffle plate 702, which drives the sliding block 701 and the support plate 703 to move and stretch the second spring 706. The protective cover 710 blocks material leakage. The electrode plate 707 is inserted into the electrode ring 708 to open the circuit. The indicator light 709 lights up, the solenoid valve 712 opens, and the air inlet pipe 711 introduces high-temperature superheated steam into the gasifier 1. When the feed is interrupted, the second spring 706 drives all components to reset, the circuit is disconnected, and the solenoid valve 712 closes to stop the gas supply. Heat transfer medium is pre-injected into the bottom cavity of gasifier 1 via injection pipe 902. Heating pipe 8 is turned on to heat the heat transfer medium. Heat is transferred to the reaction area of ​​gasifier 1 via heat transfer plate 801. After gasification, combustible gas is discharged from exhaust pipe 9, liquid residue is discharged from residual liquid recovery pipe 901, and waste heat transfer medium is discharged through discharge pipe 903. Each pipeline is controlled by its own valve.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for continuous feeding of biomass liquid high-temperature gasification, comprising a gasifier (1), characterized in that: A splined shaft (2) is slidably connected to the top side of the gasifier (1) via a bearing seat. A demisting screen (201) is fixedly connected to the bottom of the splined shaft (2). A mounting frame (202) is fixedly connected to the top of the gasifier (1). A fixing plate (203) is fixedly connected to the inner top wall of the mounting frame (202). A rotating shaft (204) is rotatably connected inside the fixing plate (203). A cam (205) is fixedly connected to the outer wall of the rotating shaft (204). When the protruding end of the cam (205) moves, it is used to raise and lower the connecting plate (206). In operation, the bottom of the connecting plate (206) is fixedly connected to the top of the spline shaft (2), the outer wall of the connecting plate (206) is fixedly connected to the connecting block (207), the inside of the connecting block (207) is slidably connected to the support rod (208), the two ends of the support rod (208) are respectively fixedly connected to the top of the gasifier (1) and the inner top wall of the mounting frame (202), a spring (209) is fixedly connected between the connecting block (207) and the top of the gasifier (1), and a rotating component for promoting the gasification effect is installed inside the gasifier (1).

2. The apparatus for continuous feeding of biomass liquid high-temperature gasification according to claim 1, characterized in that: The rotating assembly includes a rotating shaft (3), the top of which is fixedly connected to the bottom of a spline shaft (2), and stirring blades (301) are uniformly fixedly connected to the outer wall of the rotating shaft (3). Scrapers (302) are symmetrically fixedly connected to the bottom of the rotating shaft (3), and the outer wall of the scraper (302) is attached to the inner wall of the gasifier (1).

3. The apparatus for continuous feeding of biomass liquid high-temperature gasification according to claim 1, characterized in that: A drive motor (4) is installed on the inner top wall of the mounting frame (202). The output end of the drive motor (4) is fixedly connected to a support shaft (401). The outer wall of the support shaft (401) is fixedly connected to a drive bevel gear (402). The tooth end of the drive bevel gear (402) is meshed with a driven bevel gear (403). The inner wall of the driven bevel gear (403) is fixedly connected to the outer wall of the rotating shaft (204).

4. The apparatus for continuous feeding of biomass liquid high-temperature gasification according to claim 3, characterized in that: The bottom of the support shaft (401) is fixedly connected to a drive pulley (5), the outer wall of the drive pulley (5) is fitted with a belt (501), one end of the belt (501) is provided with a driven pulley (502), the inner wall of the driven pulley (502) is splined with the outer wall of the spline shaft (2), and the bottom of the driven pulley (502) is fixedly connected to the top of the bearing seat.

5. The apparatus for continuous feeding of biomass liquid high-temperature gasification according to claim 1, characterized in that: A mounting frame (6) is fixedly connected to the outer wall of the gasifier (1). A conveying cylinder (601) is installed inside the mounting frame (6). A feed pipe (602) is fixedly connected to one side of the conveying cylinder (601). One end of the feed pipe (602) is fixedly connected inside the gasifier (1). A feed hopper (603) is fixedly connected to one end of the conveying cylinder (601). A conveying motor (604) is installed on the other side of the conveying cylinder (601). A connecting shaft (605) is fixedly connected to the output end of the conveying motor (604). A spiral auger (606) is fixedly connected to the outer wall of the connecting shaft (605).

6. The apparatus for continuous feeding of biomass liquid high-temperature gasification according to claim 5, characterized in that: A connecting frame (7) is fixedly connected to the outer wall of the feed pipe (602). A sliding groove is provided between the feed pipe (602) and the connecting frame (7). A sliding block (701) is slidably connected in the sliding groove between the feed pipe (602) and the connecting frame (7). Protective covers (710) are fixedly connected between the two sides of the sliding block (701) and the corresponding sides of the sliding groove. A flow baffle (702) is fixedly connected to the bottom of the sliding block (701) inside the feed pipe (602). A support plate (703) is fixedly connected to the top of the sliding block (701) inside the connecting frame (7). A connecting rod (704) is fixedly connected to one side of the support plate (703), and a sleeve (705) is fixedly connected to the outer wall of one side of the connecting frame (7). The outer wall of the connecting rod (704) is slidably connected to one side of the connecting frame (7) and the inside of the sleeve (705). A second spring (706) is fixedly connected to the opposite side of the connecting rod (704) and the sleeve (705). An electrode plate (707) is installed on one side of the support plate (703), and an electrode ring (708) is installed on the other side of the connecting frame (7). An indicator light (709) is installed on the outer wall of one side of the connecting frame (7).

7. The apparatus for continuous feeding of biomass liquid high-temperature gasification according to claim 6, characterized in that: An air inlet pipe (711) is fixedly connected to the middle of the gasifier (1). An electromagnetic valve (712) is installed on the outer wall of the air inlet pipe (711). The electromagnetic valve (712), the electrode plate (707), the electrode ring (708), and the indicator light (709) are electrically connected.

8. The apparatus for continuous feeding of biomass liquid high-temperature gasification according to claim 1, characterized in that: Heating tubes (8) are evenly installed at the bottom of the gasifier (1), and a heat-conducting plate (801) is installed on the inner wall of the bottom end of the gasifier (1).

9. The apparatus for continuous feeding of biomass liquid high-temperature gasification according to claim 8, characterized in that: The top of the gasifier (1) is fixedly connected to an exhaust pipe (9). The outer wall of the gasifier (1) above the heat-conducting plate (801) is equipped with a residual liquid recovery pipe (901). The outer wall of the gasifier (1) below the heat-conducting plate (801) is equipped with an injection pipe (902). The bottom of the gasifier (1) is equipped with a discharge pipe (903). Valves are installed on the outer walls of the residual liquid recovery pipe (901), the injection pipe (902) and the discharge pipe (903).

10. A method for continuous feeding of biomass liquid high-temperature gasification, characterized in that: An apparatus for continuous feeding of biomass liquid high-temperature gasification as described in any one of claims 1-9 includes the following steps: When in use, the device is started and the drive motor (4) runs. The drive motor (4) drives the support shaft (401) to rotate. The support shaft (401) drives the rotating shaft (204) and cam (205) to rotate via the active bevel gear (402) and the driven bevel gear (403). The cam (205) intermittently pushes the connecting plate (206), and with the help of the spring (209), drives the spline shaft (2) and the demisting screen (201) to make up-down reciprocating linear motion. On the other hand, the support shaft (401) drives the spline shaft (2) to rotate circumferentially through the active pulley (5), toothed belt (501), and driven pulley (502). The spline shaft (2) synchronously drives the rotating shaft (3), stirring blade (301), and scraper (302) to rotate and move up and down at the same time, so as to stir and scrape the material inside the gasifier (1). When the flue gas generated by gasification passes through the reciprocating demister (201), the droplets flow back to the gasifier (1), and the gas is discharged through the exhaust pipe (9); During feeding, the connecting shaft (605) and the screw conveyor (606) are driven to rotate by the conveying motor (604). The biomass liquid is put into the conveying cylinder (601) through the feeding hopper (603), and pushed by the screw conveyor (606) through the feeding pipe (602) to complete the continuous feeding. When the biomass liquid flows through the feed pipe (602), it pushes the baffle plate (702), which drives the sliding block (701) and the support plate (703) to move and stretch the second spring (706). The protective cover (710) blocks the material leakage. The electrode plate (707) is inserted into the electrode ring (708) to conduct the circuit. The indicator light (709) lights up, the solenoid valve (712) opens, and the air inlet pipe (711) introduces high-temperature superheated steam into the gasifier (1). When the feed is interrupted, the second spring (706) drives each component to reset, the circuit is disconnected, and the solenoid valve (712) closes to stop the gas supply. Heat transfer medium is pre-injected into the bottom cavity of the gasifier (1) via the injection pipe (902), and the heating pipe (8) is turned on to heat the heat transfer medium. The heat is transferred to the reaction area of ​​the gasifier (1) via the heat transfer plate (801). After gasification, the combustible gas is discharged from the exhaust pipe (9), the liquid residue is discharged from the residual liquid recovery pipe (901), and the waste heat transfer medium is discharged through the discharge pipe (903). Each pipeline is controlled by its own valve.

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