Biomass gas carbon sludge co-production treatment device

Abstract

The invention provides a biomass gas-carbon-sludge co-production treatment device which comprises a modified separation tank, a sludge bin is arranged on a feeding port of the modified separation tank, the sludge bin is connected to the modified separation tank through a sludge conveyor, and the modified separation tank is provided with a sludge outlet; a discharge port of the modified separation tank is conveyed to a vertical pressure type sludge dewatering machine through a sludge pump for mechanical squeezing and dewatering, the sludge dewatered by the vertical pressure type sludge dewatering machine enters a temporary storage bin through a screw conveyer, and then is subjected to pyrolysis and carbonization treatment, and a sludge drying and carbonization process is combined with a biomass gasification carbon production process, so that the biomass gasification carbon production efficiency is improved. Fuel gas generated by biomass gasification is used for drying and carbonizing sludge, combined treatment of the sludge and biomass such as agricultural straw, rice husks and rice husks is achieved, and meanwhile finished carbon such as activated carbon and charcoal and carbonized organic fertilizer with high organic matter content are generated.

Description

Technical Field

[0001] The invention relates to the technical field of sludge disposal, and in particular to a biomass gas-charcoal sludge co-production disposal device. Background Art

[0002] At present, the sludge drying and carbonization process uses high-water content sludge to be directly transported into the drying furnace and carbonization furnace for drying and carbonization treatment, and does not involve heatless drying and biomass gasification carbonization system. The current sludge drying and carbonization process consumes a lot of gas and electricity, has high energy consumption and low efficiency, and does not involve the treatment of biomass such as agricultural straw, rice husks, and husks. Summary of the invention

[0003] The technical problem solved by the present invention is to provide a biomass gas, charcoal and sludge co-production and disposal device to solve the problems raised in the above background technology.

[0004] The technical problem solved by the present invention is achieved by adopting the following technical scheme: a biomass gas charcoal sludge co-production and treatment device, comprising: a modified separation tank, a sludge silo is provided on the feed port of the modified separation tank, the sludge silo is connected to the modified separation tank through a sludge conveyor, the discharge port of the modified separation tank is conveyed to a vertical pressure sludge dewatering machine through a sludge pump for mechanical pressing and dehydration, the sludge dehydrated by the vertical pressure sludge dewatering machine enters a temporary storage silo through a screw conveyor, and then undergoes pyrolysis and carbonization treatment, the sludge dehydrated by the vertical pressure sludge dewatering machine enters a sludge dryer from the temporary storage silo through a sludge conveyor for pyrolysis and drying, the pyrolyzed sludge enters an intermediate silo through a sludge conveyor, and then enters a carbonization furnace through a sludge conveyor for carbonization treatment, and the carbonized sludge enters a carbonized product silo for storage through a water-cooled screw conveyor.

[0005] Furthermore, the modified separation tank includes a tank body, a spiral water pipe, a stirring shaft, a sludge pump, etc. The spiral water pipe is spirally wound around the tank body, and the spiral water pipe is welded to the tank body as a whole. The spiral water pipe has a water inlet and a water outlet. After the high-temperature hot water enters from the water inlet, it flows out from the water outlet after passing through the water pipe. A feed port, a liquid level meter, and a reduction motor are provided on the top of the separation tank. The reduction motor is connected to a stirring shaft, and the stirring shaft is inside the tank body. The stirring shaft is welded with spiral blades.

[0006] Furthermore, the fuel gas required by the sludge drying furnace and the carbonization furnace is provided by the gasification furnace, and no external fuel gas supply is required.

[0007] Furthermore, a biomass silo is provided on one side of the modified separation tank, and the biomass enters the gasifier through the biomass silo and the lifting conveyor. The biomass is pyrolyzed and gasified in the gasifier to produce fuel gas and charcoal. The fuel gas produced by the gasifier is supplied to the sludge drying furnace and the carbonization furnace through the gas pipeline I and the gas pipeline II respectively. The charcoal produced by the gasifier enters the bag filling machine through the pneumatic conveyor, and is bagged by the bag filling machine to form charcoal bags and transported for sale, and subsequently activated carbon and charcoal are made; the flue gas produced by the bag filling machine enters the pulse dust collector through the centrifugal fan for dust removal and discharge.

[0008] Furthermore, the high-temperature flue gas generated by the carbonization furnace enters the sludge drying furnace through the centrifugal fan and is recycled again, thereby realizing the recovery and utilization of heat energy, reducing heat energy loss and improving energy utilization rate.

[0009] Furthermore, the high-temperature flue gas generated by the sludge dryer enters the cyclone dust collector through the flue gas duct I, and the dust generated after the treatment by the cyclone dust collector enters the temporary storage silo together with the sludge through the screw conveyor. The high-temperature flue gas after dust removal enters the bag dust collector through the pipeline, and then enters the economizer. The high-temperature flue gas circulates and heats the water from the modified separation tank in the economizer. The flue gas treated by the economizer enters the water washing spray tower and the alkali washing spray tower in turn, and enters the activated carbon adsorption tower through the centrifugal fan, and then the pure exhaust gas is discharged.

[0010] Furthermore, the flue gas duct II is connected to a waste heat duct, and a portion of the high-temperature flue gas in the flue gas duct II enters the sludge dryer through the duct and the centrifugal fan, thereby realizing the recovery and utilization of waste heat in the high-temperature flue gas.

[0011] Furthermore, the water in the modified separation tank used for heating the sludge enters the economizer through the water pipe II, and the high-temperature flue gas in the economizer heats the water from the modified separation tank. The heated water returns to the modified separation tank through the water pump and the water pipe I to achieve heating of the sludge. The water is cyclically heated and cooled through the above process, and the heat energy in the high-temperature flue gas is recovered and utilized.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. Combine the sludge drying and carbonization process with the biomass gasification and charcoal making process, use the gas generated by biomass gasification to dry and carbonize the sludge, realize the joint treatment of sludge and agricultural straw, rice husk, rice husk and other biomass, and produce finished charcoal such as activated carbon and charcoal and carbonized organic fertilizer with high organic matter content.

[0013] 2. By combining the sludge drying and carbonization process with the biomass gasification and charcoal making process, there is no need for external gas supply. The system itself can realize energy extraction and recycling, reducing the consumption of gas energy.

[0014] 3. The present invention adds a sludge heatless drying system before the sludge drying and carbonization process, realizes high-pressure dehydration by mechanically pressing the sludge, dehydrates the sludge with a water content of more than 85% to a water content of less than 55%, and then performs drying and carbonization, thereby improving the efficiency of drying and carbonization and reducing energy consumption.

[0015] 4. The present invention utilizes the waste heat of sludge drying and carbonization to perform modification, heating and separation on the sludge before treatment, thereby improving the sludge dehydration efficiency and thermal energy utilization rate and reducing the loss of thermal energy.

[0016] 5. The present invention realizes heatless drying and dry carbonization of sludge with a water content of more than 85%, reduces the water content to 0, and produces carbonized products with high organic matter content that can be used as organic fertilizers and soil conditioners. At the same time, the present invention also realizes the gasification and charcoal production of biomass such as agricultural straw, rice husks, and rice husks, extracts and utilizes the fuel gas generated by biomass gasification, and produces finished charcoal that can be used for activated carbon and charcoal, realizing the joint production and disposal of sludge and biomass. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the structure of the modified separation tank of the present invention.

[0019] Figure 3 It is a schematic diagram of the interior of the modified separation tank of the present invention.

[0020] Figure 4 It is a schematic diagram of a three-dimensional view of the modified separation tank of the present invention.

[0021] In the figure: 1. Sludge silo; 26. Economizer; 2. Biomass silo; 27. Water washing spray tower; 3. Sludge conveyor; 28. Alkaline washing spray tower; 4. Modification separation tank; 29. ​​Centrifugal fan; 5. Sludge pump; 30 , activated carbon adsorption tower; 6, vertical pressure sludge dewatering machine; 31, lifting conveyor; 7, screw conveyor; 32, gasification furnace; 8, sludge temporary storage silo; 33, pneumatic conveyor; 9, sludge conveyor; 34, bag filling machine; 10, sludge drying furnace; 35, centrifugal fan; 11, sludge conveyor; 36, pulse dust collector; 12 intermediate and intermediate silos; 37, carbon bag; 13, sludge conveyor; 38, gas pipeline I; 44, carbonization furnace; 39, gas pipeline II; 15, water-cooled screw conveyor; 40, centrifugal fan; 6, carbonized product silo; 17, flue gas pipeline I; 4.1, tank; 18 , cyclone dust collector; 4.2, spiral water pipe; 19, centrifugal fan; 4.3, water inlet; 20, bag filter; 4.4, water outlet; 21, flue gas duct II; 4.5, sludge pump; 22, waste heat duct; 4.6, feed inlet; 23, water pump; 4.7, stirring motor; 24, water pipe I; 4.8, liquid level meter; 25, water pipe II; 4.9, stirring shaft; 4.10, spiral blade. DETAILED DESCRIPTION

[0022] In order to make the technical means for realizing the present invention, the creative features, the objectives and effects to be achieved easy to understand, the present invention is further explained below in conjunction with specific diagrams. In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection, or an integral connection can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be internal communication between two components. Example 1

[0023] like Figures 1 to 4As shown, a biomass gas charcoal sludge co-production and treatment device comprises: a modified separation tank 4, a sludge silo 1 is arranged on the feed port of the modified separation tank 4, the sludge silo 1 is connected to the modified separation tank 4 through a sludge conveyor 3, the discharge port of the modified separation tank 4 is conveyed to a vertical pressure sludge dewatering machine 6 through a sludge pump 5 for mechanical pressing and dehydration, the sludge dehydrated by the vertical pressure sludge dewatering machine enters a temporary storage silo 8 through a screw conveyor 7, and then undergoes pyrolysis and carbonization treatment, the sludge dehydrated by the vertical pressure sludge dewatering machine enters a sludge dryer 10 from the temporary storage silo 8 through a sludge conveyor 9 for pyrolysis and drying, the pyrolyzed sludge enters an intermediate silo 12 through a sludge conveyor 11, and then enters a carbonization furnace 14 through a sludge conveyor 13 for carbonization treatment, and the carbonized sludge enters a carbonized product silo 16 for storage through a water-cooled screw conveyor 15. The modified separation tank 4 includes a tank body 4.1, a spiral water pipe 4.2, a stirring shaft 4.9, a sludge pump 4.5, etc. The spiral water pipe is spirally wound around the tank body 4.1, and the spiral water pipe 4.2 is welded to the tank body 4.1 as a whole. The spiral water pipe 4.2 has a water inlet 4.3 and a water outlet 4.4. After the high-temperature hot water enters from the water inlet, it flows out from the water outlet through the spiral water pipe 4.2. The upper part of the separation tank 4 is provided with a feed port 4.6, a liquid level meter 4.8, and a reduction motor 4.7. The reduction motor 4.7 is connected to a stirring shaft 4.9, and the stirring shaft is inside the tank body 4.1. The stirring shaft 4.9 is welded with a spiral blade 4.10. Example 2

[0024] like Figures 1 to 4As shown, a biomass gas charcoal sludge co-production and treatment device comprises: a modified separation tank 4, a sludge silo 1 is arranged on the feed port of the modified separation tank 4, the sludge silo 1 is connected to the modified separation tank 4 through a sludge conveyor 3, the discharge port of the modified separation tank 4 is conveyed to a vertical pressure sludge dewatering machine 6 through a sludge pump 5 for mechanical pressing and dehydration, the sludge dehydrated by the vertical pressure sludge dewatering machine enters a temporary storage silo 8 through a screw conveyor 7, and then undergoes pyrolysis and carbonization treatment, the sludge dehydrated by the vertical pressure sludge dewatering machine enters a sludge dryer 10 from the temporary storage silo 8 through a sludge conveyor 9 for pyrolysis and drying, the pyrolyzed sludge enters an intermediate silo 12 through a sludge conveyor 11, and then enters a carbonization furnace 14 through a sludge conveyor 13 for carbonization treatment, and the carbonized sludge enters a carbonized product silo 16 for storage through a water-cooled screw conveyor 15. The gas required by the sludge drying furnace 10 and the carbonization furnace 14 is provided by the gasification furnace 32, and no external gas supply is required. A biomass silo 2 is provided on one side of the modified separation tank 4. The biomass enters the gasification furnace 32 through the biomass silo 2 and the lifting conveyor 31. The biomass is pyrolyzed and gasified in the gasification furnace 32 to produce gas and charcoal. The gas generated by the gasification furnace 32 is supplied to the sludge drying furnace 10 and the carbonization furnace 14 through the gas pipeline 38 and the gas pipeline 39 respectively. The charcoal produced by the gasification furnace 32 enters the bag filling machine 34 through the pneumatic conveyor 33. After the bag filling machine 34 is filled, the charcoal bag 37 is formed and shipped out for sale, and activated carbon and charcoal are subsequently made; the flue gas generated by the bag filling machine 34 enters the pulse dust collector 36 through the centrifugal fan 35 for dust removal and discharge. Example 3

[0025] like Figures 1 to 4 As shown, a biomass gas charcoal sludge co-production and treatment device comprises: a modified separation tank 4, a sludge silo 1 is arranged on the feed port of the modified separation tank 4, the sludge silo 1 is connected to the modified separation tank 4 through a sludge conveyor 3, the discharge port of the modified separation tank 4 is conveyed to a vertical pressure sludge dewatering machine 6 through a sludge pump 5 for mechanical pressing and dehydration, the sludge dehydrated by the vertical pressure sludge dewatering machine enters a temporary storage silo 8 through a screw conveyor 7, and then undergoes pyrolysis and carbonization treatment, the sludge dehydrated by the vertical pressure sludge dewatering machine enters a sludge dryer 10 from the temporary storage silo 8 through a sludge conveyor 9 for pyrolysis and drying, the pyrolyzed sludge enters an intermediate silo 12 through a sludge conveyor 11, and then enters a carbonization furnace 14 through a sludge conveyor 13 for carbonization treatment, and the carbonized sludge enters a carbonized product silo 16 for storage through a water-cooled screw conveyor 15. The high-temperature flue gas generated by the carbonization furnace 14 enters the sludge drying furnace 10 through the centrifugal fan 40 and is recycled again, thereby realizing the recovery and utilization of heat energy, reducing heat energy loss, and improving energy utilization rate. Example 4

[0026] like Figures 1 to 4As shown, a biomass gas charcoal sludge co-production and treatment device comprises: a modified separation tank 4, a sludge silo 1 is arranged on the feed port of the modified separation tank 4, the sludge silo 1 is connected to the modified separation tank 4 through a sludge conveyor 3, the discharge port of the modified separation tank 4 is conveyed to a vertical pressure sludge dewatering machine 6 through a sludge pump 5 for mechanical pressing and dehydration, the sludge dehydrated by the vertical pressure sludge dewatering machine enters a temporary storage silo 8 through a screw conveyor 7, and then undergoes pyrolysis and carbonization treatment, the sludge dehydrated by the vertical pressure sludge dewatering machine enters a sludge dryer 10 from the temporary storage silo 8 through a sludge conveyor 9 for pyrolysis and drying, the pyrolyzed sludge enters an intermediate silo 12 through a sludge conveyor 11, and then enters a carbonization furnace 14 through a sludge conveyor 13 for carbonization treatment, and the carbonized sludge enters a carbonized product silo 16 for storage through a water-cooled screw conveyor 15. The high-temperature flue gas generated by the sludge dryer 10 enters the cyclone dust collector 18 through the flue gas pipeline I17. The dust generated by the cyclone dust collector 18 enters the temporary storage bin 8 together with the sludge through the screw conveyor 7. The high-temperature flue gas after dust removal enters the bag filter 20 through the pipeline 27, and then enters the economizer 26. The high-temperature flue gas circulates and heats the water from the modified separation tank 4 in the economizer 26. The flue gas treated by the economizer 26 enters the water washing spray tower 27 and the alkali washing spray tower 28 in turn, and enters the activated carbon adsorption tower 30 through the centrifugal fan 29, and then the pure tail gas is discharged. The flue gas pipeline II21 is connected to the waste heat pipeline 22. A part of the high-temperature flue gas in the flue gas pipeline II21 enters the sludge dryer 10 through the pipeline 22 and the centrifugal fan 19, so as to realize the recovery and utilization of the waste heat in the high-temperature flue gas. Example 5

[0027] like Figures 1 to 4As shown, a biomass gas charcoal sludge co-production and treatment device comprises: a modified separation tank 4, a sludge silo 1 is arranged on the feed port of the modified separation tank 4, the sludge silo 1 is connected to the modified separation tank 4 through a sludge conveyor 3, the discharge port of the modified separation tank 4 is conveyed to a vertical pressure sludge dewatering machine 6 through a sludge pump 5 for mechanical pressing and dehydration, the sludge dehydrated by the vertical pressure sludge dewatering machine enters a temporary storage silo 8 through a screw conveyor 7, and then undergoes pyrolysis and carbonization treatment, the sludge dehydrated by the vertical pressure sludge dewatering machine enters a sludge dryer 10 from the temporary storage silo 8 through a sludge conveyor 9 for pyrolysis and drying, the pyrolyzed sludge enters an intermediate silo 12 through a sludge conveyor 11, and then enters a carbonization furnace 14 through a sludge conveyor 13 for carbonization treatment, and the carbonized sludge enters a carbonized product silo 16 for storage through a water-cooled screw conveyor 15. The water in the modified separation tank 4 used for heating the sludge enters the economizer 26 through the water pipe II25. In the economizer 26, the high-temperature flue gas heats the water from the modified separation tank 4. The heated water returns to the modified separation tank 4 through the water pump 23 and the water pipe I24 to heat the sludge. The water is cyclically heated and cooled through the above process, and the heat energy in the high-temperature flue gas is recovered and utilized.

[0028] The present invention includes a sludge mechanical dehydration system, a sludge pyrolysis carbonization system, a biomass gasification system, a flue gas treatment system, a waste heat recovery system, etc. The sludge with a water content of more than 85% is mechanically dehydrated and pyrolyzed and carbonized, and combined with the gasification and charcoal-making process of biomass such as agricultural straw and rice husk, the wet sludge is pyrolyzed and carbonized to a water content of 0 and a carbonized product with a high organic matter content is formed. At the same time, the agricultural biomass is gasified and charcoal-made, and the fuel gas generated by the biomass gasification is used to carry out sludge pyrolysis and carbonization, thereby realizing self-supply of energy and eliminating the need for external fuel gas input to the system. At the same time, the waste heat recovery system and the sludge modification and separation system are used to reduce energy consumption and improve the efficiency of sludge dehydration and pyrolysis and carbonization.

[0029] Before the sludge is subjected to pyrolysis and carbonization, it is first subjected to heating, modification and separation in a modification and separation tank 4, and then transported to a vertical pressure sludge dewatering machine 6 via a sludge pump 5 for mechanical squeezing and dehydration. The sludge dewatered by the vertical pressure sludge dewatering machine enters a temporary storage silo 8 via a screw conveyor 7, and then subjected to pyrolysis and carbonization treatment. The beneficial effect is that the moisture content of the sludge dewatered by the vertical pressure sludge dewatering machine has been reduced from more than 85% to less than 55%, thereby reducing the energy consumption of subsequent pyrolysis and carbonization.

[0030] After the sludge enters the modified separation tank from the feed port 4.6, it is heated by the high-temperature hot water that continuously flows through the spiral water pipe 4.2. At the same time, the reduction motor 4.7 drives the stirring shaft 4.9 to stir the sludge. The sludge surges in the separation tank driven by the spiral blade 4.10, which facilitates sufficient heating and changes in the properties of the sludge.

[0031] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A biomass gas, charcoal and sludge co-production and treatment device, comprising: A modified separation tank (4), wherein a sludge silo (1) is provided on the feed port of the modified separation tank (4), and the sludge silo (1) is connected to the modified separation tank (4) via a sludge conveyor (3), and is characterized in that: the discharge port of the modified separation tank (4) is conveyed to a vertical pressure sludge dewatering machine (6) via a sludge pump (5) for mechanical squeezing and dehydration, and the sludge dewatered by the vertical pressure sludge dewatering machine enters a temporary storage silo (8) via a screw conveyor (7), and then undergoes pyrolysis and carbonization treatment, and the sludge dewatered by the vertical pressure sludge dewatering machine (6) enters a sludge dryer from the temporary storage silo (8) via a sludge conveyor (9). (10) for pyrolysis drying, the pyrolyzed sludge enters the intermediate silo (12) through the sludge conveyor (11), and then enters the carbonization furnace (14) through the sludge conveyor (13) for carbonization treatment, and the carbonized sludge enters the carbonized product silo (16) for storage through the water-cooled screw conveyor (15); the modified separation tank (4) includes a tank body (4.1), a spiral water pipe (4.2), a stirring shaft (4.9), and a sludge pump (4.5), the spiral water pipe (4.2) is spirally wound around the tank body (4.1), the spiral water pipe (4.2) and the tank body (4.1) are welded together, and the spiral water pipe ( The separation tank (4) has a water inlet (4.3) and a water outlet (4.4), and high-temperature hot water enters from the water inlet (4.3) and flows out from the water outlet (4.4) after passing through the spiral water pipe (4.2); the separation tank (4) is provided with a feed inlet (4.6), a liquid level meter (4.8), and a reduction motor (4.7) on the top; the reduction motor (4.7) is connected to a stirring shaft (4.9), the stirring shaft (4.9) is inside the tank body (4), and a spiral blade (4.10) is welded to the stirring shaft (4.9); a biomass silo (2) is provided on one side of the modified separation tank (4), and the biomass is discharged through the biomass silo (2) and the lifting The conveyor (31) enters the gasifier (32), and the biomass is pyrolyzed and gasified in the gasifier (32) to generate gas and charcoal. The gas generated by the gasifier (32) is supplied to the sludge drying furnace (10) and the carbonization furnace (14) through the gas pipeline I (38) and the gas pipeline II (39), respectively. The charcoal generated by the gasifier (32) enters the bag filling machine (34) through the pneumatic conveyor (33), and is bagged by the bag filling machine (34) to form charcoal bags (37) and transported for sale. Activated carbon and charcoal are subsequently produced. The flue gas generated by the bag filling machine (34) enters the pulse dust collector (36) through the centrifugal fan (35) for dust removal and discharge.

2. The biomass gas, charcoal and sludge co-production and treatment device according to claim 1 is characterized by: The fuel gas required by the sludge drying furnace (10) and the carbonization furnace (14) is provided by the gasification furnace (32), and no external fuel gas supply is required.

3. The biomass gas, charcoal and sludge co-production and disposal device according to claim 1 is characterized by: The high-temperature flue gas generated by the carbonization furnace (14) enters the sludge drying furnace (10) through the centrifugal fan (40) and is recycled, thereby realizing the recycling of heat energy, reducing heat energy loss, and improving energy utilization.

4. The biomass gas, charcoal and sludge co-production and disposal device according to claim 1 is characterized by: The high-temperature flue gas generated by the sludge dryer (10) enters the cyclone dust collector (18) through the flue gas duct I (17). The dust generated by the cyclone dust collector (18) enters the temporary storage silo (8) together with the sludge through the screw conveyor (7). The high-temperature flue gas after dust removal enters the bag filter (20) through the duct (27), and then enters the economizer (26). The high-temperature flue gas circulates and heats the water from the modified separation tank (4) in the economizer (26). The flue gas treated by the economizer (26) enters the water washing spray tower (27), the alkali washing spray tower (28) in sequence, and enters the activated carbon adsorption tower (30) through the centrifugal fan (29), and then the pure tail gas is discharged.

5. The biomass gas, charcoal and sludge co-production and disposal device according to claim 4 is characterized by: The sludge dryer (10) is provided with a flue gas duct II (21), and the flue gas duct II (21) is connected to a waste heat duct (22). A portion of the high-temperature flue gas in the flue gas duct II (21) enters the sludge dryer (10) through the duct (22) and the centrifugal fan (19), thereby realizing the recovery and utilization of waste heat in the high-temperature flue gas.

6. The biomass gas, charcoal and sludge co-production and treatment device according to claim 1 is characterized by: The water in the modified separation tank (4) used for heating the sludge enters the economizer (26) through the water pipe II (25). In the economizer (26), the high-temperature flue gas heats the water from the modified separation tank (4). The heated water returns to the modified separation tank (4) through the water pump (23) and the water pipe I (24), thereby heating the sludge. The water is cyclically heated and cooled through the above process, and the heat energy in the high-temperature flue gas is recovered and utilized.

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