High-efficiency high-adaptability double-fluidized-bed gasification baking device

Abstract

The invention relates to the technical field of biomass power generation, and particularly discloses an efficient and high-adaptability double-fluidized-bed gasification baking device which comprises a base, a fluidized bed baking furnace and a fluidized bed gasification furnace are arranged above the base, the fluidized bed baking furnace is located on the left side of the fluidized bed gasification furnace, and a cyclone dust collector is fixedly installed at an outlet of the fluidized bed gasification furnace. A treatment assembly is arranged on the right side of the cyclone dust collector and comprises a bottom pipe arranged on the right side of the cyclone dust collector, a treatment pipe is fixedly connected to the top of the bottom pipe in an inserted mode, a top pipe is fixedly connected to the top of the treatment pipe in an inserted mode, and a fuel gas exhaust pipe is fixedly connected to the middle position of the top of the top pipe in an inserted mode. According to the biomass fuel gas processing device, biomass fuel gas introduced into the processing pipe can be cooled, so that liquid tar impurities are produced, wood chips in the processing frame are utilized to adsorb the tar impurities, the tar impurities in the biomass fuel gas are processed, and it is guaranteed that the produced biomass fuel gas contains few impurities.

Description

Technical Field

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

[0002] Biomass is a traditional renewable resource. my country is very rich in biomass energy resources. The development of biomass utilization has always been strongly advocated by the country. 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 emergence of biomass gasification heating, power generation, gasification coupled power generation and other processes can better improve the efficiency of biomass utilization and meet emission standards, which are widely recognized by the society.

[0003] In order to avoid the presence of more impurities in the produced biomass gas, it is necessary to remove impurities from the biomass gas produced by gasification. In the prior art, bag filters and other equipment are usually used to remove impurities from the biomass gas, which can handle dust impurities. However, a by-product called tar is inevitably produced during the gasification process, which not only pollutes the environment, but also affects the normal operation of the equipment and the quality of the gas. Therefore, the tar needs to be processed. At high temperature, the tar is in a gaseous state and cannot be removed by a bag filter, resulting in a large amount of impurities in the produced biomass gas, which affects the quality of the gas. Therefore, it is necessary to design a gasification device that can remove tar impurities in 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 passed into the processing tube to produce liquid tar impurities, and use the wood chips in the processing frame to adsorb the tar impurities, thereby treating the tar impurities in the biomass gas and ensuring that the impurities contained in the produced biomass gas are less, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A high-efficiency and highly adaptable dual fluidized bed gasification baking device, comprising a base, a fluidized bed baking furnace and a fluidized bed gasification furnace are arranged above the base, 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 assembly is arranged on the right side of the cyclone dust collector, the processing assembly comprises a bottom pipe arranged on the right side of the cyclone dust collector, a processing pipe is fixedly plugged into the top of the bottom pipe, a top pipe is fixedly plugged into the top of the processing pipe, a gas discharge pipe is fixedly plugged into the middle position of the top of the top pipe, a connecting pipe is fixedly plugged into the top of the top pipe and located above the processing pipe, a connecting plate is detachably connected to the top of the connecting pipe, sliding rods are slidably connected to both sides of the connecting plate, a processing frame is arranged below the sliding rod, and a plurality of processing frames are arranged, small rods are fixedly connected between adjacent processing frames, and a cooling pipe is fixedly connected to the outside of the processing pipe.

[0006] Preferably, the top of the processing frame at the top is fixedly connected to the sliding rod, a vent hole is opened on the surface of the processing frame, the outer side of the processing frame is fitted with the inner wall of the processing tube, and the processing tube is made of copper.

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

[0008] Preferably, two processing tubes are provided, two cooling tubes are provided, partitions are fixedly connected inside the top tube and the bottom tube between the two processing tubes, two partitions are provided inside the top tube and the bottom tube, a through pipe is fixedly inserted in the middle fixed part of the partition, and a solenoid valve is installed inside the through pipe.

[0009] Preferably, a swing mechanism is provided below the processing frame, and the swing mechanism comprises a round rod slidably connected to the bottom of the bottom tube, the bottom of the round rod is fixedly connected to a lifting plate, the top of the round rod extends into the interior of the processing tube, the bottom of the lifting plate is fixedly connected to a reciprocating rod, the outer wall of the reciprocating rod is slidably connected to a sleeve, the inner wall of the sleeve is provided with a piston, the top of the piston is fixedly connected to the reciprocating rod, the left side of the sleeve is fixedly connected to a connecting frame, the top and bottom of the sleeve are fixedly plugged with bent pipes between the connecting frame, the middle part of the connecting frame is fixedly plugged with a conveying pipe, the top of the connecting frame is slidably connected to a straight rod, the outer wall of the straight rod is rotatably connected to a baffle, and two baffles are provided, the top of the connecting frame is fixedly connected to a long plate, the front end of the long plate is rotatably connected to the middle part of the baffle, the left side of the reciprocating rod is fixedly connected to a push plate, the push plate is between the two baffles, the bottom of the straight rod is fixedly connected to an air baffle, and an entry pipe is fixedly plugged between the rear end of the connecting frame and the top of the cooling tube.

[0010] Preferably, the right side of the air shield is in contact with the inner wall of the connecting frame, and the outer wall of the piston is in contact with the inner wall of the sleeve.

[0011] Preferably, a reset mechanism is provided below the connecting plate, and the reset mechanism comprises a connecting frame fixedly connected to the bottom of the connecting plate, and a spring is fixedly connected between the connecting frame and the processing frame at the top.

[0012] Preferably, the middle parts of the plurality of processing frames are rotatably connected to a rotating shaft, the top of the rotating shaft is connected to the internal thread of the connecting frame, and the outer wall of the rotating shaft is located inside the processing frame and is fixedly connected to a stirring blade.

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

[0014] Preferably, a cavity is provided 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 present invention has the following beneficial effects:

[0016] 1. Through the function of the processing component, the biomass gas passed into the processing pipe can be cooled to produce liquid tar impurities, and the sawdust in the processing frame can be used to adsorb the tar impurities, thereby treating the tar impurities in the biomass gas and ensuring that the impurities in the produced biomass gas are less;

[0017] 2. Through the coordination of the connecting plate, sliding rod, processing frame and small rod, the sawdust used for tar absorption can be replaced without stopping the operation of the device, ensuring that the sawdust has a good absorption effect on tar, thereby improving the treatment effect of tar;

[0018] 3. Through the cooperation of the swing mechanism and the reset mechanism, the slide bar, the processing frame and the small rod can move back and forth up and down, which is conducive to the turning of the sawdust, avoiding the sawdust at the bottom of the processing frame absorbing more tar and causing poor adsorption effect, further ensuring the treatment effect of tar.

[0019] 4. With the cooperation of the rotating shaft and the stirring blade, when the rotating shaft, the sliding rod, the processing frame and the small rod move upward, the rotating shaft and the connecting frame move relative to each other. Under the action of the threaded connection, the rotating shaft rotates, and then the stirring blade rotates. The stirring blade stirs and mixes the internal wood chips of the processing frame, further avoiding the wood chips at the bottom of the processing frame absorbing more tar and resulting in poor adsorption effect, thereby improving the treatment effect of tar in biomass gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

[0022] Figure 2 It is a rear structural schematic diagram of the processing assembly of the present invention;

[0023] Figure 3 It is a schematic diagram of a half-section structure of a cooling tube of the present invention;

[0024] Figure 4 For the present invention Figure 3 A magnified image of point A;

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

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

[0027] Figure 7 It is a schematic diagram of a half-section structure of a jacking pipe of the present invention;

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

[0029] Description of reference numerals:

[0030] 1. Base; 2. Fluidized bed baking furnace; 3. Fluidized bed gasification furnace; 4. Bracket; 5. Cyclone separator; 6. Processing assembly; 61. Bottom pipe; 62. Processing pipe; 63. Top pipe; 64. Gas discharge pipe; 65. Connecting pipe; 66. Connecting plate; 67. Sliding rod; 68. Processing frame; 69. Small rod; 610. Cooling pipe; 7. Swinging mechanism; 71. Round rod; 72. Lifting plate; 73. Reciprocating rod; 7 4. Sleeve; 75. Piston; 76. Connecting frame; 77. Bend pipe; 78. Delivery pipe; 79. Straight rod; 710. Baffle; 711. Long plate; 712. Push plate; 713. Air shield; 8. Reset mechanism; 81. Connecting frame; 82. Spring; 9. Agitator blade; 10. Positive pressure feeding device; 11. Cyclone dust collector; 12. Partition; 13. Through pipe; 14. Inlet pipe; 15. Rotating shaft; 16. Scraper ring. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figures 1 to 4 and Figure 6 to Figure 7The present invention provides a technical solution: a high-efficiency and highly adaptable dual fluidized bed gasification baking device, comprising a base 1, 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, a processing component 6 is arranged on the right side of the cyclone dust collector 11, 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 pipe of the cyclone dust collector 11 is fixedly connected with the bottom pipe 61, the top of the bottom pipe 61 is fixedly connected with a processing pipe 62, the top of the processing pipe 62 is fixedly connected with a top pipe 63, the middle position of the top of the top pipe 63 is fixedly connected with a gas discharge pipe 64, the top of the top pipe 63 and above the processing pipe 62 is fixedly connected with a connecting pipe 65, the top of the connecting pipe 65 is detachably connected with a connecting plate 66, the detachable connection method can be bolted, and both sides of the connecting plate 66 are slidably connected with sliding rods 67, a circular plate is fixedly connected to the top of the slide bar 67, a processing frame 68 is arranged below the slide bar 67, and a plurality of processing frames 68 are arranged, and a small rod 69 is fixedly connected between adjacent processing frames 68, a cooling pipe 610 is fixedly connected to the outside of the processing tube 62, and a mounting frame is fixedly connected to the outer wall of the cooling pipe 610, and the bottom of the mounting frame is fixedly connected to the bracket 4 on the right side, and the top of the processing frame 68 at the top is fixedly connected to the slide bar 67, and a vent hole is opened on the surface of the processing frame 68, The design of the vent holes facilitates the passage of biomass gas. The outer side of the processing frame 68 fits with the inner wall of the processing tube 62. The processing tube 62 is made of copper. The top of the base 1 is fixedly connected with a bracket 4. The fluidized bed baking furnace 2 and the fluidized bed gasification furnace 3 are respectively fixedly connected to two brackets 4. 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. The bottom of the positive pressure feeding device 10 is fixedly plugged into the fluidized bed gasification furnace 3.

[0033] By adopting the above technical scheme, when the device is used, the biomass raw material is added into the fluidized bed baking furnace 2 from the feeding port of the fluidized bed baking furnace 2, and a heating component for heating is installed inside the fluidized bed baking furnace 2 for baking the biomass raw material. During baking, a gas medium is placed from the bottom of the fluidized bed baking furnace 2 to make the biomass raw material flow, so as to facilitate uniform heating during baking. After baking, the biomass raw material passes through the cyclone separator 5 to separate the gas from the baked biomass raw material, and the baked biomass raw material is transported to the inside of the fluidized bed gasification furnace 3 through the positive pressure feeding device 10. The fluidized bed gasification furnace 3 is provided with a heating component. The biomass raw material is gasified by the fluidized bed gasification furnace 3. It is necessary to input a gas medium from the bottom of the fluidized bed gasification furnace 3 so that the baked biomass raw material is evenly heated during gasification. The biomass fuel gas generated after gasification is dedusted by the cyclone dust collector 11, and finally enters the inside of the bottom pipe 61 from the gas output pipeline of the cyclone dust collector 11.

[0034] It should be noted that since the biomass raw materials can have uniform particle size after being baked in the fluidized bed baking furnace 2, the gasification efficiency of the device is also higher for biomass raw materials with larger particle size after baking, so that the device has high adaptability to the particle size of the biomass raw materials before baking, and the calorific value of the biomass after baking is stable, high, and has a pore structure, which is beneficial to the reaction of the biomass high-speed circulating fluidized bed gasification device, thereby improving the system stability and gasification efficiency.

[0035] The processing frame 68 is provided with an absorbent material for absorbing liquid tar. The absorbent material can be wood chips, which are used to absorb tar. After the biomass gas output by the cyclone dust collector 11 enters the bottom pipe 61, it will pass into the processing pipe 62. A water injection pipe is fixedly connected to the top of the left side of the cooling pipe 610 on the left side, and cold water is injected into the cooling pipe 610, so that the cold water cools the biomass gas in the processing pipe 62. When the biomass gas is cooled to below 300 degrees Celsius, liquid tar impurities will be precipitated. The wood chips can absorb the tar. The role of oil impurities is to process the tar impurities in the biomass gas, thereby ensuring that the impurities in the produced biomass gas are less. It should be noted that the height of the processing pipe 62 can be set longer, and the number of processing frames 68 can be set more, so as to ensure that the biomass gas can be cooled to a suitable temperature to precipitate tar impurities. After the tar in the biomass gas is processed, it enters the top pipe 63, and then passes through the gas discharge pipe 64 into the external collection tank to collect the biomass gas, and finally uses the biomass gas to generate electricity using the external power generation device.

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

[0037] Specifically, Figures 2 to 4 and Figure 6 to Figure 7 As shown, two processing tubes 62 are provided, two cooling tubes 610 are provided, and a partition 12 is fixedly connected inside the top tube 63 and the bottom tube 61 between the two processing tubes 62. Two partitions 12 are provided inside the top tube 63 and the bottom tube 61. The two partitions 12 inside the top tube 63 are located on both sides of the gas exhaust pipe 64, and the two partitions 12 inside the bottom tube 61 are located on both sides of the output pipe of the cyclone dust collector 11. A through pipe 13 is fixedly inserted in the middle fixed part of the partition 12, and a solenoid valve is installed inside the through pipe 13.

[0038] By adopting the above technical solution, the solenoid valve is mature and is an existing technology. The solenoid valve used 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 beneficial to ensure that there is water inside the two cooling pipes 610 of the pipeline, so as to cool the biomass gas introduced into the two processing pipes 62.

[0039] When the sawdust inside the processing frame 68 absorbs a large amount of tar, the absorption effect will be affected, and the sawdust needs to be replaced. When replacing, first replace the sawdust inside the processing frame 68 inside the processing tube 62 on one side. If the sawdust in the processing frame 68 inside the processing tube 62 on the left side is to be replaced, the solenoid valves in the two through pipes 13 on the left side are controlled to close. At this time, the biomass gas can only pass through the processing tube 62 on the right side. The connecting plate 66 can be disassembled, and the connecting plate 66 and the slide bar 67 can be connected. , the processing frame 68 and the small rod 69 are pulled out, and a rubber plug is clamped at the bottom of the processing frame 68. The rubber plug is opened to take out the original wood chips, and new wood chips are placed. The sliding rod 67, the processing frame 68 and the small rod 69 are inserted from the connecting pipe 65, and the connecting plate 66 is installed. Then, the wood chips in the processing frame 68 on the other side are replaced. This design can replace the wood chips used to absorb tar without stopping the operation of the device, thereby ensuring that the wood chips have a good adsorption effect on tar, thereby improving the treatment effect on tar.

[0040] Specifically, Figures 2 to 6As shown, a swing mechanism 7 is provided below the processing frame 68, and the swing mechanism 7 includes a round rod 71 slidably connected to the bottom of the bottom tube 61, and a lifting plate 72 is fixedly connected to the bottom of the round rod 71, and the top of the round rod 71 extends into the interior of the processing tube 62, and a reciprocating rod 73 is fixedly connected to the bottom of the lifting plate 72, and 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, and 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, and a conveying pipe 78 is fixedly inserted in the middle part of the connecting frame 76, and a straight rod 79 is slidably connected to the top of the connecting frame 76, and a baffle 7 is rotatably connected to the outer wall of the straight rod 79 10, and two baffles 710 are provided, a long plate 711 is fixedly connected to the top of the connecting frame 76, and 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, and the push plate 712 is located between the two baffles 710, and an air shield 713 is fixedly connected to the bottom of the straight rod 79, and 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 air shield 713 is in contact with the inner wall of the connecting frame 76, and the outer wall of the piston 75 is in contact with the inner wall of the sleeve 74, and a reset mechanism 8 is provided below the connecting plate 66, and the reset mechanism 8 includes a connecting frame 81 fixedly connected to the bottom of the connecting plate 66, and a spring 82 is fixedly connected between the connecting frame 81 and the processing frame 68 at the top.

[0041] By adopting the above technical solution, the water in the cooling tube 610 generates a large amount of steam through heat exchange with the inside of the processing tube 62, and the steam enters the inside of the connecting frame 76 through the inlet pipe 14. When the piston 75 moves to the top part of the sleeve 74, the push plate 712 squeezes the baffle 710 at the top, so that the right side of the baffle 710 deviates 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 moves downward with the air shield 713. At this time, the air shield 713 blocks the air shield 713. The delivery pipe 78 and the bent pipe 77 at the bottom are held, so that the steam can only enter the upper area of ​​the piston 75 from the bent 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 end of the sleeve 74. At this time, the push plate 712 squeezes the baffle 710 at the bottom, causing the right side of the baffle 710 to deviate downward. At this time, the baffle 710 rotates around the rotating connection between the baffle 710 and the long plate 711, so that the straight rod 79 carries the air baffle. The cover 713 moves upward, and the air shield 713 blocks the delivery pipe 78 and the curved pipe 77 at the top, so that the steam can only enter the area below the piston 75 from the curved pipe 77 at the bottom. Under the action of the steam pressure, the piston 75 moves upward, and the steam in the area above 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, thereby causing the lifting plate 72 and the round rod 71 to move up and down back and forth. When the round rod 71 moves upward, it squeezes the processing frame 68 at the bottom, thereby causing the sliding rod 6 7. The processing frame 68 and the small rod 69 move upward, and when the round rod 71 moves downward, under the elastic force of the spring 82, the slide bar 67, the processing frame 68 and the small rod 69 move downward and reset. It should be noted that the wood chips inside the processing frame 68 are not completely filled. The reciprocating up and down movement of the processing frame 68 can vibrate the wood chips inside the processing frame 68, which is conducive to the turning of the wood chips and avoids the wood chips at the bottom of the processing frame 68 absorbing more tar and resulting in poor adsorption effect, thereby further ensuring the tar treatment effect.

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

[0043] Specifically, Figures 3 to 6 As shown, the middle parts of the multiple processing frames 68 are rotatably connected to the 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 the stirring blade 9.

[0044] By adopting the above technical solution, a thread is provided on the top of the rotating shaft 15, and the pitch of the threaded connection part is relatively large, which is conducive to reducing the friction during movement, ensuring that the rotating shaft 15 can rotate when the rotating shaft 15 and the connecting frame 81 move relative to each other. The threaded connection between the rotating shaft 15 and the connecting frame 81 is similar to the connection between the screw part of a 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 internal wood chips of the processing frame 68, further avoiding the wood chips at the bottom of the processing frame 68 absorbing more tar and resulting in poor adsorption effect, thereby improving the treatment effect of tar in biomass gas.

[0045] When the slide bar 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, Figure 3 and Figure 6 As shown, a scraper ring 16 is fixedly connected to the top of the processing frame 68, and the top of the scraper 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 tube 62. When the sliding rod 67, the processing frame 68 and the small rod 69 move back and forth up and down, the scraping ring 16 on the processing frame 68 can scrape the tar adhering to the inner wall of the processing tube 62, and the scraped tar impurities fall on the top of the processing frame 68 by utilizing the inclined setting, which can further improve the tar treatment effect.

[0048] Specifically, Figures 2 to 5 and Figure 8 As shown, a cavity is opened inside the fluidized bed baking furnace 2, and the end of the conveying pipe 78 away from the connecting frame 76 is inserted into the cavity, and 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-mentioned technical scheme, the steam discharged from the conveying pipe 78 still has a relatively high temperature and can pass into the interior of the cavity, replenishing a certain amount of heat inside the fluidized bed baking furnace 2, reducing the energy required by the fluidized bed baking furnace 2 for internal heating, which is beneficial to energy saving. 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 low, the internal heating component of the fluidized bed baking furnace 2 is used for heating to ensure that the temperature is sufficient for baking.

[0050] Working principle: the biomass raw material is added into the fluidized bed roasting furnace 2 from the feeding port of the fluidized bed roasting furnace 2, and the biomass raw material is roasted. After the roasting, the biomass raw material passes through the cyclone separator 5 to separate the gas from the roasted biomass raw material. The roasted biomass raw material is transported to the inside of the fluidized bed gasification furnace 3 through the positive pressure feeding device 10. The biomass raw material is gasified by the fluidized bed gasification furnace 3. The gasified biomass fuel is dedusted by the cyclone dust collector 11, and finally enters the inside of the bottom pipe 61 from the output pipe of the cyclone dust collector 11. The cyclone dust collector 11 After the output biomass gas enters the interior of the bottom pipe 61, it will pass into the interior of the processing pipe 62, and cold water will be injected into the interior of the cooling pipe 610, so that the cold water will cool the biomass gas inside the processing pipe 62. When the biomass gas is cooled to below 300 degrees Celsius, liquid tar impurities will precipitate, and the wood chips can absorb the tar impurities. After the tar in the biomass gas is processed, it enters the top pipe 63, and then passes through the gas discharge pipe 64 into an external collection tank to collect the biomass gas, and finally uses the biomass gas to generate electricity using an external power generation device.

[0051] When replacing the wood chips in the processing frame 68 inside the processing tube 62 on the left, the solenoid valves in the two through pipes 13 on the left are controlled to be closed. At this time, the biomass gas can only pass through the processing tube 62 on the right, and the connecting plate 66 can be disassembled, and the connecting plate 66, the sliding rod 67, the processing frame 68 and the small rod 69 can be pulled out. The bottom of the processing frame 68 is clamped with a rubber plug. The rubber plug is opened to take out the original wood chips, and new wood chips are placed. The sliding rod 67, the processing frame 68 and the small rod 69 are inserted from the connecting tube 65, and the connecting plate 66 is installed. Then, the wood chips in the processing frame 68 on the other side are replaced.

[0052] Under the action of the swing mechanism 7, the slide bar 67, the processing frame 68 and the small rod 69 move back and forth up and down, which can vibrate the wood chips inside the processing frame 68, which is beneficial to the turning of the wood chips and prevents the wood chips at the bottom of the processing frame 68 from absorbing more tar and resulting in poor adsorption effect. 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 internal wood chips of the processing frame 68, further preventing the wood chips at the bottom of the processing frame 68 from absorbing more tar and resulting in poor adsorption effect. The scraper ring 16 can scrape the tar adhered to the inner wall of the processing tube 62, and the scraped tar impurities fall on the top of the processing frame 68 by utilizing the inclined setting, which can further improve the tar treatment effect.

[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 it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, 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 assembly (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), the top of the bottom pipe (61) is fixedly plugged with a processing pipe (62), the top of the processing pipe (62) is fixedly plugged with a top pipe (63), a gas discharge pipe (64) is fixedly plugged at the middle position of the top of the top pipe (63), a connecting pipe (65) is fixedly plugged at the top of the top pipe (63) and located above the processing pipe (62), the top of the connecting pipe (65) is detachably connected with a connecting plate (66), both sides of the connecting plate (66) are slidably connected with sliding rods (67), a processing frame (68) is arranged below the sliding rod (67), and 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).

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 opened 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: 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).

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

7. The high-efficiency and highly adaptable dual fluidized bed gasification baking device according to claim 5, characterized in that: A reset mechanism (8) is provided below the connecting plate (66), and the reset mechanism (8) comprises a connecting frame (81) fixedly connected to the bottom of the connecting plate (66), and a spring (82) is fixedly connected between the connecting frame (81) and the processing frame (68) at the top.

8. The high-efficiency and highly adaptable dual fluidized bed gasification baking device according to claim 5, characterized in that: The middle parts of the multiple processing frames (68) are connected to a rotating shaft (15) for common rotation, 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).

9. The high-efficiency and highly adaptable dual fluidized bed gasification baking device according to claim 5, 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 inclined.

10. The high-efficiency and highly adaptable dual fluidized bed gasification baking device according to claim 5, 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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