Biomass semi-isolation compartment combustion and vacuum interlayer heat exchange anti-slagging combustion device

Abstract

The invention is applicable to the technical field of anti-slagging combustion, and provides an anti-slagging combustion device for biomass semi-isolation compartment combustion and vacuum interlayer heat exchange, which comprises a gas-phase combustion chamber, a gas-phase combustion chamber, a gas-phase combustion chamber and a gas-phase combustion chamber, the vacuum heat exchanger communicates with the vacuum interlayer; the smoke tube heat exchanger is connected with the gas-phase combustion chamber and communicates with the vacuum heat exchanger through a saturated steam communicating pipe; the charcoal combustion chamber is arranged at the bottom of the gas-phase combustion chamber, a bottom plate for realizing semi-isolation of the charcoal combustion chamber and the gas-phase combustion chamber is arranged at the bottom of the gas-phase combustion chamber, an interlayer air duct is arranged outside the charcoal combustion chamber, and a charcoal combustion oxygenation pipe communicated with the interlayer air duct is arranged on the bottom plate; and the combustion engine is arranged on one side of the top of the charcoal combustion chamber, and a feeding auger is arranged on the combustion engine. Therefore, heat needed by stable combustion of the carbon particles can be guaranteed, the combustion temperature of the carbon particles can be effectively reduced, heat of the gas-phase combustion chamber and smoke can be taken away in time, and the efficient heat exchange effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of anti-slagging combustion, in particular to an anti-slagging combustion device for biomass semi-isolated chamber combustion and vacuum interlayer heat exchange. Background Art

[0002] Burning dispersed crop straw can address the need for distributed heating in rural areas. However, straw contains high levels of potassium and chloride. When the solid-phase combustion temperature is too high (>800°C), the potassium and chloride are released into the gas phase, leading to combustion problems such as dust accumulation, slagging, corrosion, high particulate matter emissions, and ash fertilizer ineffectiveness on the heat exchange surface of combustion equipment. This is the main constraint on the development of straw combustion technology.

[0003] To address these issues, patent CN202110659932.7 discloses a biomass stack smoldering and electrically heated flue gas combustion method. This method involves stacking biomass fuel in a smoldering chamber and covering it with ash or crushed material. This allows the biomass to smolder flamelessly, effectively reducing the solid-phase combustion temperature. Flue gas then enters an electric flue gas heating device and burns out in the high-temperature flue gas combustion chamber. However, the smoldering process experiences significant operational fluctuations, necessitating electrical heating to maintain steady-state combustion in the flue gas combustion chamber.

[0004] Patent CN202010111289.X discloses a biomass combustion furnace with an air heat exchange interlayer, including a support frame, an inner furnace plate, an outer furnace plate, and a heat exchange fan. An air heat exchange interlayer is provided between the outer and inner furnace plates, and a heat exchange fan is used to promptly remove heat from the furnace, which plays a certain role in reducing the combustion temperature in the furnace. However, it does not involve the gas and solid phases being carried out in the same combustion chamber. Due to the high solid phase combustion temperature, it causes dusting, slagging, and flue gas emissions (NOx) on the equipment's heat exchange surface. Patent CN202110020416.X discloses a solid biomass combustion device method. A rolling heat storage shaft is provided at the bottom of the boiler and above the chain bed cap to crush the solid biomass, which can ensure that the solid biomass is fully burned in the furnace and play a certain role in alleviating the internal high temperature generated by the combustion of biomass solid particles. However, the equipment structure is relatively complex and energy consumption is relatively high.

[0005] Patent CN201910095252.X discloses an anti-slagging biomass combustion furnace ash spraying device and a biomass combustion furnace. The device adopts an ash pipe inserted into the combustion furnace air duct, and a mixing chamber is arranged at intervals in the lower part of the air duct. Ash spraying pipes corresponding to the number and position of the mixing chamber are arranged under the ash pipe, so as to remove corrosive gases such as HCl and Cl generated during the biomass combustion process, and play a certain role in reducing the corrosion and slagging of the heating surface, but fails to solve the corrosion and slagging problem from the root.

[0006] Patent CN201710174280.1 discloses a biomass pellet fuel solid-phase low-temperature, gas-phase high-temperature combustion device. This device utilizes a material crushing mechanism installed in the grate. The crushed material is dried and pyrolyzed into charcoal powder in the lower furnace, which then falls into the smoldering zone and smolders. The ash produced by the smoldering is cooled in the cooling zone and extruded and discharged. The separation of the furnace and smoldering zone enables both solid-phase low-temperature combustion and gas-phase high-temperature combustion. However, the crushing mechanism and sealing connection process are complex and difficult to implement.

[0007] In summary, the existing technology has obvious inconveniences and defects in actual use, so it is necessary to improve it. Summary of the Invention

[0008] In response to the above-mentioned defects, the purpose of the present invention is to provide an anti-slagging combustion device with semi-isolated chamber combustion and vacuum interlayer heat exchange for biomass, which can not only ensure the heat required for stable combustion of carbon particles, but also effectively reduce the combustion temperature of carbon particles, and can also promptly take away the heat of the gas phase combustion chamber and flue gas, thereby achieving the effect of efficient heat exchange.

[0009] In order to achieve the above-mentioned objectives, the present invention provides an anti-slagging combustion device with semi-isolated chamber combustion and vacuum interlayer heat exchange of biomass, comprising: a gas phase combustion chamber, a vacuum interlayer is provided on the outside of the gas phase combustion chamber, and deionized water is filled in the vacuum interlayer; a vacuum heat exchanger is provided above the gas phase combustion chamber, and the vacuum heat exchanger is connected to the vacuum interlayer; a smoke tube heat exchanger is provided on one side of the gas phase combustion chamber, the smoke tube heat exchanger is connected to the gas phase combustion chamber, the smoke tube heat exchanger is connected to the vacuum heat exchanger through a saturated steam connecting pipe, and the smoke tube heat exchanger is connected to the vacuum interlayer through a connecting pipe; a charcoal combustion chamber is provided at the bottom of the gas phase combustion chamber, the bottom of the gas phase combustion chamber is provided with a bottom plate for achieving semi-isolation of the charcoal combustion chamber and the gas phase combustion chamber, an ignition port is provided on the bottom plate, an interlayer air duct is provided on the outside of the charcoal combustion chamber, and a charcoal combustion oxygenation pipe connected to the interlayer air duct is provided on the bottom plate; a burner is provided at one side of the top of the charcoal combustion chamber, and a feeding auger is provided at the burner.

[0010] According to the anti-slagging combustion device for biomass semi-isolated chamber combustion and vacuum interlayer heat exchange of the present invention, a left water chamber and a right water chamber are respectively provided at both ends of the vacuum heat exchanger, and the left water chamber and the right water chamber are both connected to an external hot water supply pipe.

[0011] According to the anti-slagging combustion device for biomass semi-isolated chamber combustion and vacuum interlayer heat exchange of the present invention, a fire outlet is provided on one side of the gas phase combustion chamber, and the smoke tube heat exchanger is connected to the fire outlet.

[0012] According to the anti-slagging combustion device for biomass semi-isolated chamber combustion and vacuum interlayer heat exchange of the present invention, the bottom plate is provided with an opening and an ignition port, and the charcoal combustion oxygenation pipe is connected to an external fan.

[0013] According to the anti-slagging combustion device of biomass semi-isolated chamber combustion and vacuum interlayer heat exchange of the present invention, the burner includes a grate, a burner side plate 1 and a burner side plate 2, the grate cooperates with the bottom plate, one end of the grate is fixedly connected to the burner side plate 1, both ends of the burner side plate 1 are provided with a burner side plate 2, the outer side of the burner side plate 1 is provided with a burner folding plate 2, the outer side of the burner side plate 2 is provided with a burner folding plate 1, and there are gaps between the burner side plate 1 and the burner folding plate 2, and between the burner side plate 2 and the burner folding plate 1.

[0014] According to the anti-slagging combustion device for biomass semi-isolated chamber combustion and vacuum interlayer heat exchange of the present invention, a plurality of cutouts are provided on the top of the second burner side plate.

[0015] According to the anti-slagging combustion device of biomass semi-isolated chamber combustion and vacuum interlayer heat exchange of the present invention, the burner is provided with a bottom air inlet pipe and an upper distribution air inlet pipe, the bottom air inlet pipe is located in the grate, and the upper distribution air inlet pipe connects the gap between the burner side plate 1 and the burner folding plate 2, and between the burner side plate 2 and the burner folding plate 1.

[0016] According to the anti-slagging combustion device of biomass semi-isolated chamber combustion and vacuum interlayer heat exchange of the present invention, a chimney is provided on the side of the smoke tube heat exchanger away from the gas phase combustion chamber, a plurality of smoke tubes are evenly arranged in the smoke tube heat exchanger, and an interlayer is provided between the shell of the smoke tube heat exchanger and the smoke tubes, and the interlayer is filled with deionized water.

[0017] According to the anti-slagging combustion device for biomass semi-isolated chamber combustion and vacuum interlayer heat exchange of the present invention, a plurality of heat transfer copper tubes are evenly arranged in the vacuum heat exchanger, the heating cold water enters the heat transfer copper tubes at the right water chamber, and the heating cold water with increased temperature flows out at the left water chamber.

[0018] The purpose of the present invention is to provide a biomass semi-isolated chamber combustion and vacuum interlayer heat exchange anti-slagging combustion device, which has the following beneficial effects: 1. The anti-slagging combustion device, featuring semi-isolated biomass combustion and vacuum interlayer heat exchange, burns volatiles and charcoal particles in semi-isolated chambers. This not only ensures the heat required for stable charcoal combustion, but also effectively reduces the combustion temperature. This fundamentally addresses issues such as ash accumulation, slagging, and high NOx emissions caused by high-temperature solid-phase combustion of straw particles. Furthermore, the high-temperature combustion of volatiles improves combustion efficiency.

[0019] 2. The smoke tube heat exchanger and gas phase combustion chamber adopt a vacuum phase change structure, which can promptly remove the heat from the gas phase combustion chamber and flue gas, achieve efficient heat exchange effect, effectively reduce the combustion chamber and flue gas emission temperature, and reduce heat loss.

[0020] 3. The charcoal combustion oxygen enrichment pipe of the charcoal combustion chamber is connected to the interlayer air duct, which can reduce the temperature of the charcoal combustion chamber, reduce the conversion of N in the fuel into NOx, and at the same time supplement the oxygen required for charcoal combustion to ensure that the charcoal particles are burned to ash.

[0021] 4. The combustion furnace's auger has automatic feeding and automatic ash cleaning structures, which improves the automation of the machine and reduces manual operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a front cross-sectional view of the present invention; Figure 2 It is a top-down cross-sectional view of the gas phase combustion chamber; Figure 3 It is a front cross-sectional view of the charcoal combustion chamber; Figure 4 yes Figure 3 Left view of; Figure 5 It is a front cross-sectional view of the burner; Figure 6 yes Figure 5 Left view In the figure: 1- outer shell, 2- inner shell, 3- fire sight glass, 4- vacuum interlayer, 5- fire outlet, 6- chimney, 7- smoke pipe heat exchanger, 8- smoke pipe, 9- saturated steam connecting pipe, 10- left water chamber, 11- vacuum heat exchanger, 12- heat transfer copper tube, 13- exhaust pipe, 14- right water chamber, 15- sight glass, 16- ejector air duct, 17- burner, 18- hopper, 19- feeding auger, 20- gas phase combustion chamber, 21- ignition port, 22- charcoal combustion chamber, 23- charcoal combustion Aeration pipe, 24-sandwich air duct, 25-ash discharge auger, 26-bottom plate, 27-base, 28-connecting pipe, 29-upper flange, 30-inner folding plate, 31-outer folding plate, 32-inner side plate, 33-outer side plate, 34-charcoal combustion chamber bottom plate, 35-inspection door group, 36-grate, 37-burner side panel one, 38-burner side panel two, 39-burner folding plate one, 40-burner folding plate two, 41-bottom air chamber front sealing plate, 42-bottom air inlet pipe, 43-upper air inlet pipe. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] See also Figures 1 to 6 The present invention provides a biomass semi-isolated chamber combustion and vacuum interlayer heat exchange anti-slagging combustion device, comprising: The gas phase combustion chamber 20 has an outer shell 1 on its outermost side, an inner shell 2 is fixedly connected to the inner shell 1, a vacuum interlayer 4 is provided between the outer shell 1 and the inner shell 2, and deionized water is filled in the vacuum interlayer 4 to achieve phase change heat transfer. An induced air duct 16 is provided on the top of the gas phase combustion chamber 20 to provide oxygen for straw combustion.

[0025] The vacuum heat exchanger 11 is arranged above the gas phase combustion chamber 20. A left water chamber 10 and a right water chamber 14 are respectively provided at both ends of the vacuum heat exchanger 11. The left water chamber 11 and the right water chamber 14 are both connected to the external hot water supply pipe. The vacuum interlayer at the top of the gas phase combustion chamber 20 is connected to the vacuum heat exchanger 11.

[0026] The smoke tube heat exchanger 7 is arranged on one side of the gas phase combustion chamber 20. A fire outlet 5 is provided on the side of the gas phase combustion chamber 20 close to the smoke tube heat exchanger 7. The smoke tube heat exchanger 7 is connected to the fire outlet 5. A chimney 6 is provided on the end of the smoke tube heat exchanger 7 away from the gas phase combustion chamber 20. A saturated steam connecting pipe 9 is fixedly connected to the top of the smoke tube heat exchanger 7. The saturated steam connecting pipe 9 is connected to the vacuum heat exchanger 11. The bottom of the smoke tube heat exchanger is fixedly connected to a connecting pipe 28. The connecting pipe 28 is connected to the vacuum interlayer 4 in the middle of the gas phase combustion chamber 20. After the high-temperature gas in the gas phase combustion chamber 20 enters the smoke tube heat exchanger 7, the water vapor in the smoke tube heat exchanger 7 enters the vacuum heat exchanger 11 and condenses into water, which enters the vacuum interlayer 4 for circulation heat exchange. The flue gas after heat exchange is discharged through the chimney 6.

[0027] The charcoal combustion chamber 22 is located below the gas phase combustion chamber 20. A base plate 26 is fixedly connected to the bottom of the gas phase combustion chamber 20 and welded to the bottom of the gas phase combustion chamber 20. The base plate 26 has an opening, which semi-isolates the gas phase combustion chamber 20 from the charcoal combustion chamber 22. An ignition port 21 is provided at the connection between the base plate 26, the outer shell 1, and the inner shell 2 for igniting the straw briquette fuel when starting the combustion equipment. A sandwich air duct 24 is provided above the charcoal combustion chamber 23. A charcoal combustion oxygenation pipe 23 is provided within the charcoal combustion chamber 22. The charcoal combustion oxygenation pipe 23 is connected to the sandwich air duct 24, and an external fan is installed in the sandwich air duct 24. Air passes through the external fan and enters the sandwich air duct 24, which can cool the shell of the charcoal combustion chamber 22 and control the smoldering temperature below 600°C. The semi-isolated combustion structure of gas phase and solid phase can reduce the combustion temperature of carbon particles, control the escape of KCl, and fundamentally solve the problems of ash accumulation, slagging, and high particulate matter emissions caused by high-temperature solid phase combustion. At the same time, the semi-isolated combustion method can continuously provide the heat required for continuous combustion of carbon particles, ensuring the continuity and stability of carbon particle combustion.

[0028] The burner 17 is provided at the bottom of the gas phase combustion chamber 20. The burner 17 includes a grate 36, a burner side plate 1 37 and a burner side plate 2 38. The grate 36 is tilted (the tilt angle with the horizontal plane is 3 degrees), and the grate 36 is fixedly connected to the top surface of the bottom plate 26. One end of the grate 36 close to the side wall of the inner shell of the gas phase combustion chamber 20 is fixedly connected to a vertical burner side plate 1 37. Both ends of the burner side plate 1 37 are fixedly connected. There is a burner side panel 2 38, which is fixedly connected to the grate 36. The outer side of the burner side panel 2 38 is fixedly connected to the burner folding plate 1 39, and the outer side of the burner side panel 1 37 is fixedly connected to the burner folding plate 2 40. There is a certain gap between the burner side panel 1 37 and the burner folding plate 2 40, and between the burner side panel 2 38 and the burner folding plate 1 39, and the top of the burner side panel 2 38 is provided with a cutout. A feed auger 19 is provided above the grate 36, and the feed auger 19 is rotatably connected to the burner folding plate 2 40 (a limit housing is provided on the outside of the feed auger 19, and the limit housing is fixedly connected to the burner folding plate 2 40). The feed auger 19 passes through the gas phase combustion chamber 20. A hopper 18 is provided on one side of the gas phase combustion chamber 20, and the hopper 18 is fixedly connected to the limit housing. The burner 17 is provided with a bottom air inlet pipe 42 and an upper air distribution inlet pipe 43. The bottom air inlet pipe 42 is arranged inside the grate 36, and the upper air distribution inlet pipe 43 connects the gap between the burner side plate 1 37 and the burner folding plate 2 40, and between the burner side plate 2 38 and the burner folding plate 1 39, so that the wind can be blown out from the cutout of the burner side plate 2 38 through the above-mentioned gap to realize oxygen supply. The end of the grate 36 away from the feeding auger 19 is connected to the front sealing plate 41 of the bottom air chamber.

[0029] See also Figures 1 to 6 It should be further explained that the flue heat exchanger 7 is cylindrical, with a chimney 6 located at its outlet. Several flue pipes 8 made of boiler steel are evenly and fixedly arranged inside the flue heat exchanger 7. Flue gas from the gas-phase combustion chamber 20 is heat-exchanged in the flue pipes 8 before being discharged outdoors through the chimney 6. An interlayer is provided between the shell of the flue heat exchanger 7 and the flue pipes 8. This interlayer is filled with deionized water as a circulating medium.

[0030] See also Figures 1 to 6 It should be further explained that the vacuum heat exchanger 11 is cylindrical, and a number of heat transfer copper tubes 12 are evenly and fixedly arranged inside the vacuum heat exchanger 11. The hot water exchanges heat with the deionized water in the vacuum interlayer 4 through the heat transfer copper tubes 12. The heating cold water enters the heat transfer copper tubes 12 from the right water chamber 14. After heat exchange, the heating cold water with increased temperature enters the external heating pipeline from the left water chamber 10. An exhaust pipe 13 is fixedly connected to the vacuum heat exchanger 11.

[0031] See also Figures 1 to 6It should be further explained that a sight glass 15 is provided on the vacuum interlayer 4 in the middle of the gas phase combustion chamber 20 to facilitate observation of the water level of the circulating medium water inside the vacuum interlayer 4. A fire sight glass 3 is provided on the upper part of the gas phase combustion chamber 20 for observing the gas phase combustion situation.

[0032] See also Figures 1 to 6 It should be further explained that a base 27 is fixedly connected to the bottom end of the gas phase combustion chamber 20, and the base 27 can provide support for the gas phase combustion chamber 20 and the remaining structures.

[0033] See also Figures 1 to 6 It should be further explained that the upper half of the charcoal combustion chamber 22 is cylindrical, and the lower half of the charcoal combustion chamber 22 is square cone-shaped. The charcoal combustion chamber includes an outer folding plate 31 and an inner folding plate 30. The outer folding plate 31 is arranged on the outside of the inner folding plate 30, and the interlayer air duct 24 is arranged between the inner folding plate 30 and the outer folding plate 31. The outer side of the outer folding plate 31 is fixedly connected to the outer plate 33, and the inner side of the inner folding plate 30 is fixedly connected to the inner plate 32. The top ends of the outer folding plate 31 and the inner folding plate 30 are fixedly connected to the flange 29. The charcoal combustion chamber 22 is connected to the bottom plate 26 through the flange 29. An inspection door group 35 is also fixedly provided on the side walls of the outer folding plate 31 and the inner folding plate 30 to facilitate the inspection and maintenance of the charcoal combustion chamber 22. An ash discharge auger 25 is provided at the bottom end of the charcoal combustion chamber 22. A limiting housing is provided on the exterior of the ash discharge auger 25. The ash discharge auger 25 is rotatably connected to the limiting housing. The limiting housing of the ash discharge auger 25 is fixedly connected to the charcoal combustion chamber bottom plate 34, which is fixedly connected to the inner folding plate 30 and the outer folding plate 31. A charcoal combustion oxygenation pipe 23, which cooperates with the ignition port 21, is fixedly connected to the upper flange 29. The charcoal combustion oxygenation pipe 23 is connected to the interlayer air duct 24. Heated air can enter the charcoal combustion chamber 22 through the charcoal combustion oxygenation pipe 23, providing oxygen for smoldering.

[0034] During implementation, the straw pellets are delivered to the burner 17 via a hopper 18 and a feed auger 19. The feed auger 19 continuously pushes fuel pellets, pushing the fuel pellets forward. The straw pellets are then preheated and dried before being gasified. The combustible gas enters the gas-phase combustion chamber 20 for high-temperature combustion. The gasified straw pellets are transformed into charcoal pellets, which ultimately fall into the charcoal combustion chamber 22. There, the charcoal pellets burn at a low temperature (less than 600°C). The charcoal pellets are completely burned into ash, which is then removed from the combustion chamber 22 via an ash discharge auger 25.

[0035] Deionized water circulates within the vacuum interlayer of the gas-phase combustion chamber 20, the interlayer of the smoke tube heat exchanger 7, and the vacuum heat exchanger 11. This water, after absorbing heat through the gas-phase combustion chamber 20 and smoke tube heat exchanger 7, transforms into water vapor. This water rises to the vacuum heat exchanger 11, where it encounters the cold wall of the heat transfer copper tube 12, releasing its latent heat and condensing into liquid water, which then falls and continues the heat exchange cycle. Hot water in the heat transfer copper tube 12 enters the right water chamber 14 and, after heat exchange and temperature increase, exits the left water chamber 10, providing hot water for heating users.

[0036] The present invention provides a biomass semi-isolated chamber combustion and vacuum interlayer heat exchange anti-slagging combustion device, which has the following beneficial effects: 1. The anti-slagging combustion device, featuring semi-isolated biomass combustion and vacuum interlayer heat exchange, burns volatiles and charcoal particles in semi-isolated chambers. This not only ensures the heat required for stable charcoal combustion, but also effectively reduces the combustion temperature. This fundamentally addresses issues such as ash accumulation, slagging, and high NOx emissions caused by high-temperature solid-phase combustion of straw particles. Furthermore, the high-temperature combustion of volatiles improves combustion efficiency.

[0037] 2. The smoke tube heat exchanger and gas phase combustion chamber adopt a vacuum phase change structure, which can promptly remove the heat from the gas phase combustion chamber and flue gas, achieve efficient heat exchange effect, effectively reduce the combustion chamber and flue gas emission temperature, and reduce heat loss.

[0038] 3. The charcoal combustion oxygen enrichment pipe of the charcoal combustion chamber is connected to the interlayer air duct, which can reduce the temperature of the charcoal combustion chamber, reduce the conversion of N in the fuel into NOx, and at the same time supplement the oxygen required for charcoal combustion to ensure that the charcoal particles are burned to ash.

[0039] 4. The combustion furnace's auger has automatic feeding and automatic ash cleaning structures, which improves the automation of the machine and reduces manual operations.

[0040] Of course, the present invention may have multiple embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A biomass semi-isolated chamber combustion and vacuum interlayer heat exchange anti-slagging combustion device, characterized in that: include: A gas phase combustion chamber is provided with a vacuum interlayer on the outside thereof, and the vacuum interlayer is filled with deionized water; A vacuum heat exchanger is provided above the gas phase combustion chamber and is connected to the vacuum interlayer; A smoke tube heat exchanger is provided on one side of the gas phase combustion chamber, the smoke tube heat exchanger is connected to the gas phase combustion chamber, the smoke tube heat exchanger is connected to the vacuum heat exchanger through a saturated steam connecting pipe, and the smoke tube heat exchanger is connected to the vacuum interlayer through a connecting pipe; A charcoal combustion chamber is provided at the bottom of the gas phase combustion chamber. The bottom of the gas phase combustion chamber is provided with a bottom plate for semi-isolating the charcoal combustion chamber and the gas phase combustion chamber. The bottom plate is provided with an ignition port. An interlayer air duct is provided outside the charcoal combustion chamber. The bottom plate is provided with a charcoal combustion oxygenation pipe connected to the interlayer air duct. The burner is arranged at one side of the top of the charcoal combustion chamber, and a feeding auger is provided at the burner.

2. The anti-slagging combustion device for biomass semi-isolated chamber combustion and vacuum interlayer heat exchange according to claim 1 is characterized in that: A left water chamber and a right water chamber are respectively provided at both ends of the vacuum heat exchanger, and both the left water chamber and the right water chamber are connected to an external hot water supply pipe.

3. The anti-slagging combustion device for biomass semi-isolated chamber combustion and vacuum interlayer heat exchange according to claim 1 is characterized in that: A fire outlet is provided on one side of the gas phase combustion chamber, and the smoke tube heat exchanger is connected to the fire outlet.

4. The anti-slagging combustion device for biomass semi-isolated chamber combustion and vacuum interlayer heat exchange according to claim 1 is characterized in that: The bottom plate is provided with an opening and an ignition port, and the charcoal combustion oxygenation pipe is connected to an external fan.

5. The anti-slagging combustion device for biomass semi-isolated chamber combustion and vacuum interlayer heat exchange according to claim 1 is characterized in that: The burner includes a grate, a burner side panel 1 and a burner side panel 2. The grate cooperates with the bottom plate. One end of the grate is fixedly connected to the burner side panel 1. Both ends of the burner side panel 1 are provided with the burner side panel 2. The outer side of the burner side panel 1 is provided with the burner folding plate 2. The outer side of the burner side panel 2 is provided with the burner folding plate 1. There are gaps between the burner side panel 1 and the burner folding plate 2, and between the burner side panel 2 and the burner folding plate 1.

6. The anti-slagging combustion device for biomass semi-isolated chamber combustion and vacuum interlayer heat exchange according to claim 5 is characterized in that: The top of the second burner side plate is provided with a plurality of cutouts.

7. The anti-slagging combustion device for biomass semi-isolated chamber combustion and vacuum interlayer heat exchange according to claim 6 is characterized in that: The burner is provided with a bottom air inlet pipe and an upper air distribution inlet pipe, the bottom air inlet pipe is located in the grate, and the upper air distribution inlet pipe connects the gap between the burner side plate 1 and the burner folding plate 2, and the gap between the burner side plate 2 and the burner folding plate 1.

8. The anti-slagging combustion device for biomass semi-isolated chamber combustion and vacuum interlayer heat exchange according to claim 1 is characterized in that: A chimney is provided on one side of the smoke tube heat exchanger away from the gas phase combustion chamber. Several smoke tubes are evenly arranged in the smoke tube heat exchanger. An interlayer is provided between the shell of the smoke tube heat exchanger and the smoke tubes, and the interlayer is filled with deionized water.

9. The anti-slagging combustion device for biomass semi-isolated chamber combustion and vacuum interlayer heat exchange according to claim 1 is characterized in that: A plurality of heat transfer copper tubes are evenly arranged in the vacuum heat exchanger. The heating cold water enters the heat transfer copper tubes at the right water chamber, and the heating cold water with increased temperature flows out at the left water chamber.

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