An efficient and highly adaptable dual-fluidized bed gasification roasting device

Abstract

The present invention relates to the technical field of biomass power generation, and specifically discloses a high-efficiency and high-adaptability dual-fluidized-bed gasification and baking device, which includes a base. Above the base, there are a fluidized-bed baking furnace and a fluidized-bed gasification furnace. The fluidized-bed baking furnace is on the left side of the fluidized-bed gasification furnace. A cyclone dust collector is fixedly installed at the outlet of the fluidized-bed gasification furnace. A processing component is arranged on the right side of the cyclone dust collector. The processing component includes a bottom pipe arranged on the right side of the cyclone dust collector. A processing pipe is fixedly inserted at the top of the bottom pipe. A top pipe is fixedly inserted at the top of the processing pipe. A gas discharge pipe is fixedly inserted at the middle position of the top of the top pipe. Through the cooperation of the above structures, the biomass gas introduced into the processing pipe can be cooled, so as to produce liquid tar impurities, and the sawdust in the processing frame is used to adsorb the tar impurities, so as to treat the tar impurities in the biomass gas and ensure that the amount of impurities contained in the produced biomass gas is less.

Description

Technical Field

[0001] The present invention relates to the technical field of biomass power generation, and in particular to a high-efficiency and highly adaptable dual-fluidized bed gasification and baking device. Background Art

[0002] Biomass is a traditional renewable resource. Biomass energy resources in China are very rich. The development of biomass utilization has been strongly advocated by the state. At present, the main energy utilization methods of biomass are direct combustion and gasification. After years of operation, the efficiency and benefits of direct combustion power generation, as well as environmental pollution problems, have become bottlenecks restricting development. The successive emergence of processes such as biomass gasification for heating, power generation, and gasification combined power generation can better improve the utilization efficiency of biomass and can meet the discharge standards, which is widely recognized by society.

[0003] In order to avoid a large amount of impurities in the produced biomass gas, it is necessary to remove impurities from the biomass gas generated by gasification. In the prior art, devices such as bag filters are usually used to remove impurities from biomass gas, which can handle dust impurities. However, during the gasification process, a by-product called tar is inevitably generated. It not only pollutes the environment but also affects the normal operation of equipment and the quality of gas. Therefore, it is necessary to treat tar. At high temperatures, tar is in a gaseous state and cannot be removed by a bag filter, resulting in a relatively large amount of impurities in the produced biomass gas, affecting the quality of the gas. Therefore, it is necessary to design a gasification device that can remove tar impurities from biomass gas. Summary of the Invention

[0004] The purpose of the present invention is to provide a high-efficiency and highly adaptable dual-fluidized bed gasification and baking device, which can cool the biomass gas introduced into the treatment pipe, thereby producing liquid tar impurities, and use the wood chips in the treatment frame to adsorb the tar impurities, so as to treat the tar impurities in the biomass gas and ensure that the amount of impurities contained in the produced biomass gas is small, so as to solve the problems raised in the above background art.

[0005] To achieve the above object, the present invention provides the following technical solution: An efficient and highly adaptable dual-fluidized bed gasification roasting device, comprising a base, above which a fluidized bed roasting furnace and a fluidized bed gasification furnace are provided. The fluidized bed roasting furnace is on the left side of the fluidized bed gasification furnace. A cyclone dust collector is fixedly installed at the outlet of the fluidized bed gasification furnace. A processing assembly is provided on the right side of the cyclone dust collector. The processing assembly includes a bottom pipe provided on the right side of the cyclone dust collector. A processing pipe is fixedly inserted at the top of the bottom pipe. A top pipe is fixedly inserted at the top of the processing pipe. A gas discharge pipe is fixedly inserted at the middle position of the top of the top pipe. A connecting pipe is fixedly inserted at the top of the top pipe and above the processing pipe. The top of the connecting pipe is detachably connected to a connecting plate. Slide rods are slidably connected to both sides of the connecting plate. A processing frame is provided below the slide rods, and there are multiple processing frames. Small rods are fixedly connected between adjacent processing frames. A cooling pipe is fixedly connected to the outside of the processing pipe.

[0006] Preferably, the top of the topmost processing frame is fixedly connected to the slide rod. Ventilation holes are provided on the surface of the processing frame. The outside of the processing frame fits with the inner wall of the processing pipe. The processing pipe is made of copper.

[0007] Preferably, a bracket is fixedly connected to the top of the base. The fluidized bed roasting furnace and the fluidized bed gasification furnace are respectively fixedly connected to the two brackets. A cyclone separator is fixedly installed at the outlet of the fluidized bed roasting furnace. A positive pressure feeding device is fixedly installed at the bottom of the cyclone separator. The bottom of the positive pressure feeding device is fixedly inserted into the fluidized bed gasification furnace.

[0008] Preferably, there are two processing pipes and two cooling pipes. Partition plates are fixedly connected between the two processing pipes inside the top pipe and the bottom pipe. There are two partition plates inside the top pipe and the bottom pipe. A through pipe is fixedly inserted at the fixed middle part of the partition plate. An electromagnetic valve is installed inside the through pipe.

[0009] Preferably, a swing mechanism is arranged below the processing framework. The swing mechanism includes a round rod slidably connected to the bottom of the bottom pipe. The bottom of the round rod is fixedly connected with a lifting plate. The top of the round rod extends into the interior of the processing pipe. The bottom of the lifting plate is fixedly connected with a reciprocating rod. The outer wall of the reciprocating rod is slidably connected with a sleeve. A piston is arranged on the inner wall of the sleeve. The top of the piston is fixedly connected with the reciprocating rod. The left side of the sleeve is fixedly connected with a connecting frame. Bent pipes are fixedly inserted between the top and bottom of the sleeve and the connecting frame. A conveying pipe is fixedly inserted in the middle part of the connecting frame. A straight rod is slidably connected to the top of the connecting frame. A baffle is rotatably connected to the outer wall of the straight rod, and there are two baffles. A long plate is fixedly connected to the top of the connecting frame. The front end of the long plate is rotatably connected to the middle part of the baffle. A push plate is fixedly connected to the left side of the reciprocating rod. The push plate is located between the two baffles. A gas blocking cover is fixedly connected to the bottom of the straight rod. An inlet pipe is fixedly inserted between the rear end of the connecting frame and the top of the cooling pipe.

[0010] Preferably, the right side of the gas blocking cover fits with the inner wall of the connecting frame, and the outer wall of the piston fits with the inner wall of the sleeve.

[0011] Preferably, a reset mechanism is arranged below the connecting plate. The reset mechanism includes a connecting frame fixedly connected to the bottom of the connecting plate. A spring is fixedly connected between the connecting frame and the topmost processing framework.

[0012] Preferably, a rotating shaft is rotatably connected to the middle parts of multiple processing frameworks. The top of the rotating shaft is threadedly connected to the interior of the connecting frame. Stirring blades are fixedly connected to the outer wall of the rotating shaft inside the processing frameworks.

[0013] Preferably, a scraping ring is fixedly connected to the top of the processing framework, and the top of the scraping ring is inclined.

[0014] Preferably, a cavity is formed inside the fluidized bed baking furnace, and one end of the conveying pipe away from the connecting frame is inserted into the cavity.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. Through the action of the processing component, the biomass gas introduced into the processing pipe can be cooled, so as to produce liquid tar impurities, and the sawdust in the processing framework is used to adsorb the tar impurities, so as to treat the tar impurities in the biomass gas and ensure that the amount of impurities contained in the produced biomass gas is less;

[0017] 2. Through the cooperation of structures such as the connecting plate, sliding rod, treatment frame, and small rod, it is possible to replace the wood chips for adsorbing tar without stopping the operation of the device, ensuring good adsorption effect of the wood chips on tar, thereby improving the treatment effect on tar.

[0018] 3. Under the combined action of the swinging mechanism and the reset mechanism, the sliding rod, treatment frame, and small rod can move up and down reciprocally, which is beneficial to turning the wood chips and avoiding the situation that the wood chips at the bottom of the treatment frame absorb too much tar, resulting in poor adsorption effect, and further ensuring the treatment effect on tar.

[0019] 4. Under the combined action of the rotating shaft and the stirring blade, when the sliding rod, treatment frame, and small rod move upward, relative movement occurs between the rotating shaft and the connecting frame. Under the action of threaded connection, the rotating shaft rotates, and then the stirring blade rotates. The stirring blade stirs and mixes the wood chips inside the treatment frame, further avoiding the situation that the wood chips at the bottom of the treatment frame absorb too much tar, resulting in poor adsorption effect, and thus improving the treatment effect on tar in the biomass gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is the overall structure view of the present invention;

[0022] Figure 2 It is the rear view structure schematic diagram of the treatment component of the present invention;

[0023] Figure 3 It is the half-sectional structure schematic diagram of the cooling pipe of the present invention;

[0024] Figure 4 It is for the present invention Figure 3 The enlarged view at A;

[0025] Figure 5 It is the half-sectional structure schematic diagram of the sleeve of the present invention;

[0026] Figure 6 It is the half-sectional structure schematic diagram of the connecting plate of the present invention;

[0027] Figure 7 It is the half-sectional structure schematic diagram of the top pipe of the present invention;

[0028] Figure 8This is a schematic diagram of the partial cross-section structure of the fluidized bed baking furnace of the present invention.

[0029] Explanation of reference numerals:

[0030] 1. Base; 2. Fluidized bed baking furnace; 3. Fluidized bed gasifier; 4. Support; 5. Cyclone separator; 6. Treatment assembly; 61. Bottom pipe; 62. Treatment pipe; 63. Top pipe; 64. Gas discharge pipe; 65. Connecting pipe; 66. Connecting plate; 67. Slide bar; 68. Treatment frame; 69. Small rod; 610. Cooling pipe; 7. Swing mechanism; 71. Round rod; 72. Lifting plate; 73. Reciprocating rod; 74. Sleeve; 75. Piston; 76. Connecting frame; 77. Elbow pipe; 78. Delivery pipe; 79. Straight rod; 710. Baffle; 711. Long plate; 712. Pusher plate; 713. Gas baffle; 8. Reset mechanism; 81. Connecting frame; 82. Spring; 9. Stirring blade; 10. Positive pressure feeding device; 11. Cyclone dust collector; 12. Partition plate; 13. Through pipe; 14. Inlet pipe; 15. Rotating shaft; 16. Scraping ring. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figures 1 to 4 and Figures 6 to 7, the present invention provides a technical solution: an efficient and highly adaptable dual-fluidized bed gasification and roasting device, including a base 1. Above the base 1, there are a fluidized bed roasting furnace 2 and a fluidized bed gasification furnace 3. The fluidized bed roasting furnace 2 is on the left side of the fluidized bed gasification furnace 3. At the outlet of the fluidized bed gasification furnace 3, a cyclone dust collector 11 is fixedly installed. On the right side of the cyclone dust collector 11, there is a processing component 6. The processing component 6 includes a bottom pipe 61 arranged on the right side of the cyclone dust collector 11. The cyclone dust collector 11 is provided with an output pipeline, and the right side of the output pipeline of the cyclone dust collector 11 is fixedly inserted into the bottom pipe 61. At the top of the bottom pipe 61, a processing pipe 62 is fixedly inserted. At the top of the processing pipe 62, a top pipe 63 is fixedly inserted. At the middle position of the top of the top pipe 63, a gas discharge pipe 64 is fixedly inserted. At the top of the top pipe 63 and above the processing pipe 62, a connecting pipe 65 is fixedly inserted. The top of the connecting pipe 65 is detachably connected to a connecting plate 66. The detachable connection method can adopt bolt connection. On both sides of the connecting plate 66, there are sliding rods 67. The top of the sliding rod 67 is fixedly connected to a circular plate. Below the sliding rod 67, there is a processing frame 68, and there are multiple processing frames 68. Between adjacent processing frames 68, there is a small rod 69 fixedly connected. On the outer side of the processing pipe 62, a cooling pipe 610 is fixedly connected. On the outer wall of the cooling pipe 610, there is a mounting frame. The bottom of the mounting frame is fixedly connected to the bracket 4 on the right side. The top of the topmost processing frame 68 is fixedly connected to the sliding rod 67. On the surface of the processing frame 68, there are ventilation holes. The design of the ventilation holes facilitates the passage of biomass gas. The outer side of the processing frame 68 fits with the inner wall of the processing pipe 62. The manufacturing material of the processing pipe 62 is copper. The top of the base 1 is fixedly connected to a bracket 4. The fluidized bed roasting furnace 2 and the fluidized bed gasification furnace 3 are respectively fixedly connected to the two brackets 4. At the outlet of the fluidized bed roasting furnace 2, a cyclone separator 5 is fixedly installed. At the bottom of the cyclone separator 5, a positive pressure feeding device 10 is fixedly installed. The bottom of the positive pressure feeding device 10 is fixedly inserted into the fluidized bed gasification furnace 3.

[0033] By adopting the above technical solution, when the device is in use, biomass raw materials are added into the fluidized bed roasting furnace 2 through the feeding port of the fluidized bed roasting furnace 2. And a heating component for heating is installed inside the fluidized bed roasting furnace 2 to roast the biomass raw materials. When roasting, a gas medium is introduced from the bottom of the fluidized bed roasting furnace 2 to make the biomass raw materials flow, facilitating uniform heating during roasting. After roasting, the biomass raw materials are separated from the gas by the cyclone separator 5. The roasted biomass raw materials are transported to the inside of the fluidized bed gasifier 3 through the positive pressure feeding device 10. A heating component is arranged inside the fluidized bed gasifier 3 to gasify the biomass raw materials by the fluidized bed gasifier 3. It is necessary to input a gas medium from the bottom of the fluidized bed gasifier 3 to make the roasted biomass raw materials evenly heated during gasification. The biomass gas generated after gasification is dust-removed by the cyclone dust collector 11 and finally enters the inside of the bottom pipe 61 from the gas output pipe of the cyclone dust collector 11.

[0034] It should be noted that since the biomass raw materials can have uniform particle size after being roasted by the fluidized bed roasting furnace 2, the gasification efficiency of the device is relatively high for the biomass raw materials with larger particle size after roasting. This makes the device highly adaptable to the particle size of the biomass raw materials before roasting. Moreover, the calorific value of the roasted biomass is stable, with a high calorific value and pore structure, which is beneficial to the reaction of the biomass high-speed circulating fluidized bed gasification device, improving the system stability and gasification efficiency.

[0035] An absorption material for absorbing liquid tar is arranged inside the treatment framework 68. The absorption material can be sawdust, which is used to adsorb tar. After the biomass gas output from the cyclone dust collector 11 enters the inside of the bottom pipe 61, it will be introduced into the inside of the treatment pipe 62. A water injection pipe is fixedly inserted at the left top of the cooling pipe 610 on the left to inject cold water into the inside of the cooling pipe 610, thereby cooling the biomass gas inside the treatment pipe 62 with the cold water. When the biomass gas is cooled to below 300 degrees Celsius, liquid tar impurities will precipitate. The sawdust can play a role in absorbing the tar impurities, thereby treating the tar impurities in the biomass gas and ensuring that the amount of impurities contained in the produced biomass gas is less. It should be noted that the height of the treatment pipe 62 can be set relatively long, and the number of treatment frameworks 68 can be set relatively large, so as to ensure that the biomass gas can be cooled to an appropriate temperature to precipitate tar impurities. After the tar in the biomass gas is treated, it enters the top pipe 63, and then the biomass gas is introduced into an external collection tank through the gas discharge pipe 64 for collection. Finally, an external power generation device uses the biomass gas for power generation.

[0036] Copper has good thermal conductivity, which is beneficial to improving the heat exchange effect between the water inside the treatment pipe 62 and the cooling pipe 610.

[0037] Specifically, such as Figures 2 to 4 andFigures 6 to 7 As shown, there are two treatment pipes 62 provided, two cooling pipes 610 provided, and a partition plate 12 fixedly connected inside the top pipe 63 and the bottom pipe 61 between the two treatment pipes 62. There are two partition plates 12 inside the top pipe 63 and the bottom pipe 61. The two partition plates 12 inside the top pipe 63 are located on both sides of the gas discharge pipe 64, and the two partition plates 12 inside the bottom pipe 61 are located on both sides of the output pipeline of the cyclone dust collector 11. A through pipe 13 is fixedly inserted into the middle fixed part of the partition plate 12, and a solenoid valve is installed inside the through pipe 13.

[0038] By adopting the above technical solution, the solenoid valve is a mature technology in the prior art. The solenoid valve adopted here is a high-temperature resistant solenoid valve, with a high-temperature resistance exceeding 800 degrees Celsius. A hollow pipe is fixedly inserted between the two cooling pipes 610, which is conducive to ensuring that there is water inside both of the two cooling pipes 610, and can cool the biomass gas introduced into the two treatment pipes 62.

[0039] When there is a large amount of tar absorbed by the wood chips inside the treatment frame 68, it will affect the absorption effect, and thus the wood chips need to be replaced. When replacing, first replace the wood chips inside the treatment frame 68 inside one of the treatment pipes 62. If replacing the wood chips in the treatment frame 68 inside the left treatment pipe 62, control to close the solenoid valves in the two through pipes 13 on the left side. At this time, the biomass gas can only pass through the treatment pipe 62 on the right side. The connecting plate 66 can be disassembled, and the connecting plate 66, the sliding rod 67, the treatment frame 68, and the small rod 69 can be pulled out. Moreover, a rubber plug is clamped at the bottom of the treatment frame 68. Open the rubber plug to take out the original wood chips, place new wood chips, insert the sliding rod 67, the treatment frame 68, and the small rod 69 into the connecting pipe 65, install the connecting plate 66, and then replace the wood chips in the treatment frame 68 on the other side. Such a design can replace the wood chips for adsorbing tar without stopping the operation of the device, ensure that the wood chips have a good adsorption effect on tar, and thus improve the treatment effect on tar.

[0040] Specifically, as Figures 2 to 6As shown, a swinging mechanism 7 is provided below the processing frame 68. The swinging mechanism 7 includes a round rod 71 slidably connected to the bottom of the bottom pipe 61. The bottom of the round rod 71 is fixedly connected to a lifting plate 72. The top of the round rod 71 extends into the interior of the processing pipe 62. The bottom of the lifting plate 72 is fixedly connected to a reciprocating rod 73. The outer wall of the reciprocating rod 73 is slidably connected to a sleeve 74. A piston 75 is arranged on the inner wall of the sleeve 74. The top of the piston 75 is fixedly connected to the reciprocating rod 73. The left side of the sleeve 74 is fixedly connected to a connecting frame 76. Bent pipes 77 are fixedly inserted between the top and bottom of the sleeve 74 and the connecting frame 76. A conveying pipe 78 is fixedly inserted in the middle part of the connecting frame 76. A straight rod 79 is slidably connected to the top of the connecting frame 76. A baffle 710 is rotatably connected to the outer wall of the straight rod 79, and there are two baffles 710. A long plate 711 is fixedly connected to the top of the connecting frame 76. The front end of the long plate 711 is rotatably connected to the middle part of the baffle 710. A push plate 712 is fixedly connected to the left side of the reciprocating rod 73. The push plate 712 is located between the two baffles 710. A gas blocking cover 713 is fixedly connected to the bottom of the straight rod 79. An inlet pipe 14 is fixedly inserted between the rear end of the connecting frame 76 and the top of the cooling pipe 610. The right side of the gas blocking cover 713 is in contact with the inner wall of the connecting frame 76. The outer wall of the piston 75 is in contact with the inner wall of the sleeve 74. A reset mechanism 8 is arranged below the connecting plate 66. The reset mechanism 8 includes a connecting frame 81 fixedly connected to the bottom of the connecting plate 66. A spring 82 is fixedly connected between the connecting frame 81 and the topmost processing frame 68.

[0041] By adopting the above technical solution, a large amount of steam is generated when the water in the cooling pipe 610 exchanges heat with the inside of the treatment pipe 62. The steam enters the inside of the connection frame 76 through the inlet pipe 14. When the piston 75 moves to the top part inside the sleeve 74, at this time, the push plate 712 squeezes the baffle 710 above, causing the right side of the baffle 710 to deflect upward. At this time, the baffle 710 rotates around the rotation connection between the baffle 710 and the long plate 711, so that the straight rod 79 drives the air baffle 713 to move downward. At this time, the air baffle 713 blocks the delivery pipe 78 and the elbow pipe 77 at the bottom, so that the steam can only enter the upper area of the piston 75 from the elbow pipe 77 at the top. Under the action of the steam pressure, the steam in the lower area of the piston 75 is discharged from the delivery pipe 78. During this process, the piston 75 moves downward to the bottom part inside the sleeve 74. At this time, the push plate 712 squeezes the baffle 710 below, causing the right side of the baffle 710 to deflect downward. At this time, the baffle 710 rotates around the rotation connection between the baffle 710 and the long plate 711, so that the straight rod 79 drives the air baffle 713 to move upward. At this time, the air baffle 713 blocks the delivery pipe 78 and the elbow pipe 77 at the top, so that the steam can only enter the lower area of the piston 75 from the elbow pipe 77 at the bottom. Under the action of the steam pressure, the piston 75 moves upward, and the steam in the upper area of the piston 75 is discharged from the delivery pipe 78. In this way, the reciprocating rod 73 can move up and down back and forth, and then the lifting plate 72 and the round rod 71 move up and down reciprocally. When the round rod 71 moves upward, it squeezes the treatment frame 68 at the bottommost end, and then the slide rod 67, the treatment frame 68 and the small rod 69 move upward. When the round rod 71 moves downward, under the elastic force of the spring 82, the slide rod 67, the treatment frame 68 and the small rod 69 move downward to reset. It should be noted that the sawdust inside the treatment frame 68 is not completely filled. The treatment frame 68 moves up and down reciprocally, which can play a role in vibrating the sawdust inside the treatment frame 68, facilitating the turning of the sawdust, and avoiding the sawdust at the bottom of the treatment frame 68 absorbing more tar and resulting in poor adsorption effect, further ensuring the treatment effect on tar.

[0042] It should be noted that an O-ring seal is installed at the connection between the bottom pipe 61 and the round rod 71, and an O-ring seal is also installed at the connection between the top pipe 63 and the slide rod 67 to ensure the sealing performance.

[0043] Specifically, as Figures 3 to 6 shown, a rotating shaft 15 is rotatably connected to the middle parts of multiple treatment frames 68. The top of the rotating shaft 15 is threadedly connected to the inside of the connection frame 81, and a stirring blade 9 is fixedly connected to the outer wall of the rotating shaft 15 inside the treatment frame 68.

[0044] By adopting the above technical solution, a thread is provided at the top of the rotating shaft 15, and the pitch of the threaded connection part is relatively large, which helps to reduce the frictional force during movement. When the rotating shaft 15 and the connecting frame 81 move relative to each other, it is ensured that the rotating shaft 15 can rotate. The threaded connection method between the rotating shaft 15 and the connecting frame 81 is similar to the connection between the screw part of the hand-pushed flying saucer and the flying saucer part. When the sliding rod 67, the processing frame 68, and the small rod 69 move upward, the rotating shaft 15 and the connecting frame 81 move relative to each other. Under the action of the threaded connection, the rotating shaft 15 rotates, and then the stirring blade 9 rotates. The stirring blade 9 stirs and mixes the wood chips inside the processing frame 68, further preventing the wood chips at the bottom of the processing frame 68 from absorbing too much tar and resulting in poor adsorption effect, thereby improving the treatment effect of tar in the biomass gas.

[0045] When the sliding rod 67, the processing frame 68, and the small rod 69 move downward to reset, the stirring blade 9 rotates to continue stirring the wood chips.

[0046] Specifically, as Figure 3 and Figure 6 shown, a scraping ring 16 is fixedly connected to the top of the processing frame 68, and the top of the scraping ring 16 is inclined.

[0047] By adopting the above technical solution, when the flue gas passes through, some tar may adhere to the inner wall of the processing pipe 62. When the sliding rod 67, the processing frame 68, and the small rod 69 move up and down reciprocally, the scraping ring 16 on the processing frame 68 can scrape the tar adhering to the inner wall of the processing pipe 62, and the scraped tar impurities fall above the processing frame 68 due to the inclined setting, which can further improve the treatment effect of tar.

[0048] Specifically, as Figures 2 to 5 and Figure 8 shown, a cavity is provided inside the fluidized bed baking furnace 2, and one end of the conveying pipe 78 far from the connecting frame 76 is inserted into the cavity. The steam entering the cavity is discharged from the pipe at the bottom of the fluidized bed baking furnace 2.

[0049] By adopting the above technical solution, the steam discharged from the conveying pipe 78 still has a relatively high temperature and can be introduced into the cavity to supplement a certain amount of heat inside the fluidized bed baking furnace 2, reducing the energy required for the fluidized bed baking furnace 2 to heat its interior, which is beneficial to energy conservation. It should be noted that the steam entering the cavity of the fluidized bed baking furnace 2 still has a relatively high temperature and can be used for baking. When the temperature is relatively low, the internal heating components of the fluidized bed baking furnace 2 are used for heating to ensure that the temperature is sufficient for baking.

[0050] Working principle: Biomass raw materials are added into the fluidized bed roasting furnace 2 from the feeding port of the fluidized bed roasting furnace 2, and the biomass raw materials are roasted. After roasting, the biomass raw materials are separated from the gas by the cyclone separator 5. The roasted biomass raw materials are transported into the interior of the fluidized bed gasifier 3 through the positive pressure feeding device 10. The biomass raw materials are gasified by the fluidized bed gasifier 3. The gasified biomass fuel is dedusted by the cyclone dust collector 11, and finally enters the interior of the bottom pipe 61 from the output pipe of the cyclone dust collector 11. After the biomass gas output by the cyclone dust collector 11 enters the interior of the bottom pipe 61, it will enter the interior of the treatment pipe 62. Cold water is injected into the interior of the cooling pipe 610, so that the cold water cools the biomass gas in the interior of the treatment pipe 62. When the biomass gas cools down to below 300 degrees Celsius, liquid tar impurities will be precipitated. Wood chips can play a role in absorbing tar impurities. After the tar in the biomass gas is treated, it enters the top pipe 63, and then enters the externally provided collection tank through the gas discharge pipe 64 to collect the biomass gas. Finally, the externally provided power generation device uses the biomass gas for power generation.

[0051] When replacing the wood chips in the treatment frame 68 inside the treatment pipe 62 on the left side, by controlling and closing the solenoid valves in the two through pipes 13 on the left side, at this time the biomass gas can only pass through the treatment pipe 62 on the right side. The connecting plate 66 can be disassembled, and the connecting plate 66, the sliding rod 67, the treatment frame 68 and the small rod 69 can be pulled out. Moreover, a rubber plug is clamped at the bottom of the treatment frame 68. Open the rubber plug to take out the original wood chips, place new wood chips, insert the sliding rod 67, the treatment frame 68 and the small rod 69 into the connecting pipe 65, install the connecting plate 66, and then replace the wood chips in the treatment frame 68 on the other side.

[0052] Under the action of the swinging mechanism 7, the sliding rod 67, the treatment frame 68 and the small rod 69 move up and down reciprocally, which can play a role in vibrating the wood chips inside the treatment frame 68, facilitating the turning of the wood chips, and avoiding the wood chips at the bottom of the treatment frame 68 absorbing too much tar and resulting in poor adsorption effect. And under the action of the threaded connection, the rotating shaft 15 rotates, and then the stirring blade 9 rotates. The stirring blade 9 stirs and mixes the wood chips inside the treatment frame 68, further avoiding the wood chips at the bottom of the treatment frame 68 absorbing too much tar and resulting in poor adsorption effect. And the scraping ring 16 can scrape the tar adhering to the inner wall of the treatment pipe 62, and the scraped tar impurities fall on the upper part of the treatment frame 68 by virtue of the inclined setting, which can further improve the treatment effect of tar.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A highly efficient and adaptable dual fluidized bed gasification baking device, comprising a base (1), characterized in that: A fluidized bed baking furnace (2) and a fluidized bed gasification furnace (3) are arranged above the base (1); the fluidized bed baking furnace (2) is located on the left side of the fluidized bed gasification furnace (3); a cyclone dust collector (11) is fixedly installed at the outlet of the fluidized bed gasification furnace (3); and a processing component (6) is arranged on the right side of the cyclone dust collector (11); The processing assembly (6) comprises a bottom pipe (61) arranged on the right side of the cyclone dust collector (11); a processing pipe (62) is fixedly inserted at the top of the bottom pipe (61); a top pipe (63) is fixedly inserted at the top of the processing pipe (62); a gas discharge pipe (64) is fixedly inserted at the middle position of the top of the top pipe (63); a connecting pipe (65) is fixedly inserted at the top of the top pipe (63) and located above the processing pipe (62); a connecting plate (66) is detachably connected to the top of the connecting pipe (65); sliding rods (67) are slidably connected to both sides of the connecting plate (66); a processing frame (68) is arranged below the sliding rod (67); a plurality of processing frames (68) are arranged; small rods (69) are fixedly connected between adjacent processing frames (68); and a cooling pipe (610) is fixedly connected to the outside of the processing pipe (62); A swing mechanism (7) is provided below the processing frame (68), and the swing mechanism (7) comprises a round rod (71) slidably connected to the bottom of the bottom tube (61), a lifting plate (72) is fixedly connected to the bottom of the round rod (71), the top of the round rod (71) extends into the interior of the processing tube (62), a reciprocating rod (73) is fixedly connected to the bottom of the lifting plate (72), a sleeve (74) is slidably connected to the outer wall of the reciprocating rod (73), a piston (75) is provided on the inner wall of the sleeve (74), the top of the piston (75) is fixedly connected to the reciprocating rod (73), a connecting frame (76) is fixedly connected to the left side of the sleeve (74), and a bent pipe (77) is fixedly inserted between the top and bottom of the sleeve (74) and the connecting frame (76). The middle part of the connecting frame (76) is fixedly connected with a conveying pipe (78), the top of the connecting frame (76) is slidably connected with a straight rod (79), the outer wall of the straight rod (79) is rotatably connected with a baffle (710), and two baffles (710) are provided, the top of the connecting frame (76) is fixedly connected with a long plate (711), the front end of the long plate (711) is rotatably connected to the middle part of the baffle (710), the left side of the reciprocating rod (73) is fixedly connected with a push plate (712), and the push plate (712) is located between the two baffles (710), the bottom of the straight rod (79) is fixedly connected with an air shield (713), and an inlet pipe (14) is fixedly connected between the rear end of the connecting frame (76) and the top of the cooling pipe (610); A reset mechanism (8) is provided below the connecting plate (66), the reset mechanism (8) comprising a connecting frame (81) fixedly connected to the bottom of the connecting plate (66), a spring (82) fixedly connected between the connecting frame (81) and the processing frame (68) at the top; The middle parts of the plurality of processing frames (68) are rotatably connected to a rotating shaft (15), the top of the rotating shaft (15) is connected to the internal thread of the connecting frame (81), and the outer wall of the rotating shaft (15) is located inside the processing frame (68) and is fixedly connected to a stirring blade (9).

2. The high-efficiency and highly adaptable dual fluidized bed gasification baking device according to claim 1, characterized in that: The top of the processing frame (68) at the top is fixedly connected to the slide bar (67), and a vent hole is provided on the surface of the processing frame (68). The outer side of the processing frame (68) is in contact with the inner wall of the processing tube (62), and the processing tube (62) is made of copper.

3. The high-efficiency and highly adaptable dual fluidized bed gasification baking device according to claim 1, characterized in that: Brackets (4) are fixedly connected to both sides of the top of the base (1); the fluidized bed baking furnace (2) and the fluidized bed gasification furnace (3) are fixedly connected to the two brackets (4) respectively; a cyclone separator (5) is fixedly installed at the outlet of the fluidized bed baking furnace (2); a positive pressure feeding device (10) is fixedly installed at the bottom of the cyclone separator (5); and the bottom of the positive pressure feeding device (10) is fixedly plugged into the fluidized bed gasification furnace (3).

4. The high-efficiency and highly adaptable dual fluidized bed gasification baking device according to claim 1, characterized in that: Two processing tubes (62) are provided, and two cooling tubes (610) are provided. A partition (12) is fixedly connected inside the top tube (63) and the bottom tube (61) and located between the two processing tubes (62). Two partitions (12) are provided inside the top tube (63) and the bottom tube (61). A through pipe (13) is fixedly inserted into the middle fixed part of the partition (12), and a solenoid valve is installed inside the through pipe (13).

5. The high-efficiency and highly adaptable dual fluidized bed gasification baking device according to claim 1, characterized in that: The right side of the air shield (713) is in contact with the inner wall of the connection frame (76), and the outer wall of the piston (75) is in contact with the inner wall of the sleeve (74).

6. The high-efficiency and highly adaptable dual fluidized bed gasification baking device according to claim 1, characterized in that: A scraper ring (16) is fixedly connected to the top of the processing frame (68), and the top of the scraper ring (16) is arranged at an incline.

7. The high-efficiency and highly adaptable dual fluidized bed gasification baking device according to claim 1, characterized in that: A cavity is provided inside the fluidized bed baking furnace (2), and one end of the conveying pipe (78) away from the connecting frame (76) is inserted into the cavity.

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