Waste heat recovery type straw pulverized coal combustion equipment

Abstract

The utility model relates to the technical field of energy utilization and environmental protection, in particular to waste heat recovery type straw pulverized coal combustion equipment, which comprises a barrel and a combustion ignition machine, and is characterized in that an incineration chamber is arranged in the barrel, and the combustion ignition machine is arranged at the bottom of the incineration chamber; the top of the barrel is rotationally connected with a pipeline type stirring assembly used for stirring straw and blowing a combustion improver, the pipeline type stirring assembly extends into the incineration chamber, and the top of the pipeline type stirring assembly is rotationally connected with a combustion-supporting assembly used for conveying fuel; the straw burning device is easy to operate, can utilize the pipeline type stirring assembly to inject pulverized coal to achieve the effects of promoting sufficient burning of straw and uniformizing the temperature in the burning chamber, and can fully utilize excessive waste heat to conduct preheating work so as to reduce energy consumption.

Description

Technical Field

[0001] The utility model relates to the technical field of energy utilization and environmental protection, and in particular to a waste heat recovery type straw pulverized coal combustion device. Background Art

[0002] According to incomplete statistics, my country produces approximately 1.5 billion tons of crop straw annually. While some is used as industrial raw materials, livestock feed, crushed and returned to the fields, and used for heating and cooking, two-thirds is temporarily stored as waste, burned in the open air, or piled in yards. The secondary use of biomass straw can, first, reduce air pollution caused by open-air burning of crop straw in rural areas surrounding cities; second, it can be used to generate electricity, increasing farmers' incomes; and third, it can reduce raw coal consumption and lower primary energy consumption. my country's annual production of usable crop straw, including rice, wheat, sorghum, corn, fruit tree branches, and twigs, is equivalent to nearly 1 billion tons of standard coal, offering broad prospects for its development and comprehensive utilization.

[0003] Straw burning equipment plays an important role in this environment. Straw burning equipment usually puts straw into a cylinder and ignites it with a combustion igniter to burn the straw at high temperature. It can effectively burn harmful substances in the straw and generate heat energy for collection and utilization. During the combustion process, the flue gas generated will be filtered and discharged through purification facilities. Some of the ash generated after the straw is burned is organic matter, which can be used for fertilizing farmland, with high economic benefits.

[0004] However, although many of the current straw burning equipment can complete the straw burning and utilization work, most of the burning equipment lacks optimization of the mixture of combustion aid and straw, which easily causes the straw to be heated unevenly and cannot be fully burned to produce large pieces of slag that interfere with the burning work and reduce the resource utilization rate of the straw. Therefore, it is necessary to propose a waste heat recovery type straw pulverized coal combustion equipment that reduces slag generation and improves the straw resource utilization rate. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a waste heat recovery type straw pulverized coal combustion equipment, which is used to solve the problem of waste of biological resources. It uses the method of spraying pulverized coal to assist the combustion of straw, thereby expanding the range of types of straw that can be burned and utilized. In addition, the price of the sprayed pulverized coal is relatively low and the resources are abundant, so the combustion cost can be reduced.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a waste heat recovery type straw pulverized coal combustion equipment, comprising a cylinder and a combustion ignition machine, a transmission cavity is provided at the top of the cylinder, a transmission assembly is provided in the transmission cavity, the transmission assembly passes through the transmission cavity and extends to the top of the cylinder and is fixedly connected to a motor, an incineration chamber is provided below the transmission cavity, the combustion ignition machine is arranged at the bottom of the incineration chamber, a pipeline stirring assembly for stirring straw and spraying combustion-supporting agent is rotatably connected to the top of the cylinder, the pipeline stirring assembly extends into the incineration chamber, and the top of the pipeline stirring assembly is rotatably connected to a combustion-supporting assembly for transmitting fuel;

[0007] The pipeline stirring assembly includes a stirring shaft, on which are fixedly connected a number of stirring rods. The stirring shaft and the stirring rods are respectively provided with a main pipeline and a secondary pipeline, the secondary pipeline is connected to the main pipeline, and the secondary pipeline is connected to a number of blowing ports. The combustion-supporting assembly is connected to the main pipeline, and the top of the stirring shaft is fixedly connected to the transmission assembly.

[0008] The technical principle of the above scheme is as follows: the straw is processed and transported to the incineration chamber of the device for incineration. During incineration, the straw is stirred by a pipeline stirring assembly and combustion-supporting coal powder and gas are sprayed to promote straw combustion; the exhaust gas and the heat dissipated during the transmission process are used to treat the straw and water as waste heat, thereby improving the utilization efficiency of the heat energy of straw combustion.

[0009] The above scheme has the following beneficial effects:

[0010] 1. This solution uses a pipeline-type stirring assembly to stir the straw during burning, which increases the contact area between the straw, air and combustion aid, allowing the straw to burn more completely, reducing the generation of unburned materials and the consumption of combustion aid.

[0011] 2. This solution uses a pipe-type stirring assembly to rotate and spray, and can spray pulverized coal and combustion-supporting gas to different positions in the incineration chamber during the straw burning process, making it easier for the pulverized coal to be completely burned in a short time, thereby quickly, effectively and evenly increasing the temperature in the incineration chamber, greatly improving the straw burning efficiency.

[0012] 3. In this solution, the combustion ignition machine ignites from the bottom of the incineration chamber upwards, which makes it easier to transfer heat to the sinking combustion gas and combustion-supporting agent, thereby increasing the combustion rate of the burning straw and the combustion-supporting agent.

[0013] Furthermore, the cylinder is provided with an outer shell layer, a thermal insulation layer, a heat-conducting layer and a heat-resistant layer along its radial direction from the outside to the inside, and the heat-conducting layer is provided with a heating tube wound from top to bottom along the contour of the heat-resistant layer; the input end of the heating tube is fixedly connected to a water inlet pipe, the output end of the heating tube is fixedly connected to a water supply pipe, the water inlet pipe is fixedly connected to a collecting box, and the collecting box is connected to the water supply pipe.

[0014] Beneficial effects:

[0015] 1. This solution improves different effects by setting up multiple unit layers in the cylinder. The thermal insulation layer and heat-conducting layer effectively increase the transfer efficiency and thermal insulation effect of the heat energy generated by straw combustion; the outer shell layer and heat-resistant layer effectively ensure the stability and safety of straw combustion.

[0016] 2. In this solution, the heating pipe is wound from top to bottom along the contour of the heat-resistant layer, so that the water pipe forms a structure similar to a "water wall" to cover the incineration chamber, greatly increasing the heat exchange area between the water and the combustion chamber, effectively improving the heat transfer efficiency and reducing heat energy loss.

[0017] 3. In this solution, the water in the heating tube is continuously circulated and heated in the heating tube through the collection box. The water circulation heating can make the water quickly reach the required temperature and pressure conditions, thereby improving the energy conversion efficiency and energy utilization rate of the collection box.

[0018] Furthermore, a feed pipe is fixedly connected to the top of the incineration chamber, a solenoid valve is fixedly connected to the feed pipe, the signal of the solenoid valve input end is connected to the controller output end, and the other end of the feed pipe is fixedly connected to the auger conveyor.

[0019] Beneficial effects:

[0020] In this solution, straw is transported to the incineration chamber via an auger conveyor. During incineration, the solenoid valve is opened to add straw. The heat in the incineration chamber is transferred to the auger conveyor through the feed pipe to preheat the straw, thereby improving the straw combustion efficiency and energy utilization rate. When it is not needed, the solenoid valve is closed to reduce heat loss in the incineration chamber.

[0021] Furthermore, an air inlet pipe is fixedly connected to the bottom of the incineration chamber, and the air inlet pipe is arranged around the outside of the water pipe.

[0022] Beneficial effects:

[0023] In this solution, the design of the air inlet pipe can simultaneously add different combustion-supporting gases into the incineration chamber together with the pipeline stirring assembly, or adjust the temperature in the furnace by adding cooling gas; during the water circulation process, the air inlet pipe is arranged around the outside of the water pipe, which improves the heat transfer efficiency, and utilizes the heat transfer of the water pipe to preheat the gas in the air inlet pipe, effectively improving energy utilization.

[0024] Furthermore, a heat dissipation pipe is fixedly connected to the top of the incineration chamber, and the heat dissipation pipe is arranged around the outside of the auger conveyor.

[0025] Beneficial effects:

[0026] In this solution, during the straw burning process, the air inlet pipe and the heat dissipation pipe cooperate to discharge the exhaust gas in the incineration chamber and adjust the temperature. During the exhaust process, since the heat dissipation pipe is arranged around the outside of the auger conveyor, the heat transfer efficiency is effectively improved. The heat transfer of the heat dissipation pipe is used to preheat the straw in the auger conveyor, effectively improving the straw combustion efficiency and energy utilization rate.

[0027] Furthermore, the internal blades of the auger conveyor are fixedly connected with a plurality of crushing teeth.

[0028] Beneficial effects:

[0029] In this solution, by adding crushing teeth to the blades of the auger conveyor, large pieces of straw can be simply crushed during transportation and then transported to the incineration chamber for incineration. Small pieces of straw can have a larger surface area in contact with the air and the gaps between them are larger, which is conducive to air circulation, thereby absorbing heat faster and increasing the combustion rate.

[0030] Furthermore, a slag discharge pipe communicating with the incineration chamber is provided at the bottom of the cylinder, a valve is provided in the slag discharge pipe, and a retaining frame is fixedly connected to the slag discharge pipe; a crushing rod is fixedly connected to the bottom of the stirring shaft, and the crushing rod is rotatably connected to the retaining frame.

[0031] Beneficial effects:

[0032] In this solution, the burning of straw may produce large pieces of slag, which can be crushed by the provided crushing rod and continued to be burned, effectively reducing the possibility of clogging the slag discharge pipe. The design of the rotating connection between the valve and the retaining frame can reduce the vibration generated when the crushing rod and the pipeline stirring assembly are working, thereby improving the stability of the equipment operation.

[0033] Furthermore, the bottom of the incineration chamber is bowl-shaped.

[0034] Beneficial effects:

[0035] This solution, through the design of the bottom of the incineration chamber, allows the slag produced after straw combustion to converge along the bottom wall of the incineration chamber to the slag discharge port for crushing and collection, effectively improving the slag collection efficiency.

[0036] Furthermore, the combustion-supporting component includes a jet pump, which is fixedly connected to a gas pipe, and the gas pipe is rotatably connected to the main pipeline and is connected to each other.

[0037] Beneficial effects:

[0038] In this solution, the design of the jet pump can select appropriate combustion-supporting gas or liquid according to the different types and qualities of straw to carry coal powder and transport it to the incineration chamber for spraying and combustion. It can respond quickly and complete the transportation task efficiently, effectively improving the flexibility and incineration efficiency of the incineration equipment.

[0039] Furthermore, the transmission assembly includes a driving gear, which is coaxially fixedly connected to the motor output shaft, the motor is fixedly connected to the top of the cylinder, the driving gear is meshed with a driven gear, and the driven gear is sleeved on the top of the stirring shaft;

[0040] A through hole is provided at the bottom of the transmission cavity, which is connected to the incineration chamber. A temperature sensor is fixedly connected in the through hole, and a signal at the output end of the temperature sensor is connected to the input end of the controller.

[0041] Beneficial effects:

[0042] 1. This solution utilizes gear transmission to stably transmit turnover force to the stirring shaft in a high-temperature environment during straw burning, thereby maintaining the stability of the burning operation.

[0043] 2. In this solution, when burning straw, the temperature sensor is installed in the hole to avoid damage. The temperature sensor is in direct contact with the gas in the burning room and can accurately detect its temperature information and transmit it to the staff through the receiver, which is beneficial for the staff to control the burning process to ensure burning efficiency and safety.

[0044] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 This is a schematic plan view of the structure of an embodiment of a waste heat recovery type straw pulverized coal combustion device in the present utility model;

[0046] Figure 2 This is a schematic cross-sectional view of the cylinder of the waste heat recovery type straw pulverized coal combustion equipment embodiment of the present utility model;

[0047] Figure 3 This is a schematic cross-sectional view of the pipeline stirring assembly of the waste heat recovery straw pulverized coal combustion equipment embodiment of the present invention.

[0048] The figure marks in the drawings of the specification include: 1. cylinder; 2. transmission assembly; 3. gas pipe; 4. temperature sensor; 5. motor; 6. solenoid valve; 7. auger conveyor; 8. pipeline stirring assembly; 9. heating pipe; 10. combustion ignition machine; 11. controller; 12. breaking rod; 13. valve; 14. heat dissipation pipe; 15. water inlet pipe; 16. water supply pipe; 17. air inlet pipe; 18. retaining frame; 19. collecting box; 101. outer shell layer; 102. thermal insulation layer; 103. heat conducting layer; 104. heat resistant layer. DETAILED DESCRIPTION

[0049] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0050] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0051] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0052] The following is further described in detail through specific implementation methods:

[0053] Example 1:

[0054] As attached Figure 1 and Figure 3 As shown: A waste heat recovery type straw pulverized coal combustion equipment, including a cylinder 1 and a combustion ignition machine 10, a transmission cavity is provided at the top of the cylinder 1, a transmission assembly 2 is provided in the transmission cavity, the transmission assembly 2 passes through the transmission cavity and extends to the top of the cylinder 1 and is threadedly connected to a motor 5, an incineration chamber is provided below the transmission cavity, the combustion ignition machine 10 is threadedly connected to the bottom of the incineration chamber, the top of the cylinder 1 is rotatably connected to a pipeline stirring assembly 8 for stirring straw and spraying combustion-supporting agent, the pipeline stirring assembly 8 extends into the incineration chamber, and the top of the pipeline stirring assembly 8 is rotatably connected to a combustion-supporting assembly for transmitting fuel;

[0055] The pipeline stirring assembly 8 includes a stirring shaft, on which are welded several stirring rods. The stirring shaft and the stirring rods are respectively provided with a main pipeline and a secondary pipeline, the secondary pipeline is connected to the main pipeline, and the secondary pipeline is connected to several blowing ports. The combustion-supporting assembly is connected to the main pipeline, and the top of the stirring shaft is fixedly connected to the transmission assembly 2.

[0056] The transmission assembly 2 includes a driving gear, which is coaxially keyed to the output shaft of the motor 5. The motor 5 is threadedly connected to the top of the cylinder 1. The driving gear is engaged with a driven gear, which is sleeved on the top of the stirring shaft. The driving gear and the driven gear are preferably double helical gears.

[0057] A through hole is provided at the bottom of the transmission cavity, which is connected to the incineration chamber. A temperature sensor 4 is connected to the inner thread of the through hole. The model of the temperature sensor 4 is preferably a K-type temperature sensor. The output signal of the temperature sensor 4 is connected to the input end of the controller 11. The model of the controller 11 is preferably a Yudian AI series temperature controller.

[0058] The combustion-supporting component includes a jet pump, which is fixedly connected to a gas pipe 3. The gas pipe 3 is rotatably connected to the main pipeline and is in communication with each other.

[0059] The specific implementation process is as follows: when the device needs to add combustion-supporting agent for burning straw, the output shaft of the starting motor 5 drives the driving gear to rotate, and the driven gear is driven by the turnover force of the driving gear to drive the stirring shaft to rotate, and the stirring shaft drives the stirring rod to stir in the incineration chamber. At the same time, the jet pump is turned on, and the high-speed kinetic combustion-supporting gas is transported into the main pipeline with the coal powder and ejected through the injection port along the secondary pipeline path. The stirring rod sprays the coal powder while stirring, so that the coal powder is blown to different positions in the incineration chamber. The combustion ignition machine 10 ignites from the bottom of the incineration chamber upward, which makes it easier to transfer heat to the sinking combustion-supporting gas and combustion-supporting agent, so that the straw and the combustion-supporting agent are mixed and burned rapidly in a short time. In the face of different situations, different fluids and particles of combustion-supporting agents can be selected to be sprayed into the incineration chamber through the jet pump.

[0060] The temperature sensor 4 is installed in the hole to avoid damage when stirring straw or spraying combustion aid. The temperature sensor 4 is in direct contact with the gas in the combustion chamber, and continuously detects the temperature information in the combustion chamber and transmits it to the staff through the controller 11, which is beneficial for the staff to analyze and control the incineration process to ensure incineration efficiency and safety.

[0061] Example 2:

[0062] As attached Figure 1 and Figure 2 As shown, the difference from Example 1 is that

[0063] The cylinder 1 is provided with an outer shell layer 101, a thermal insulation layer 102, a heat-conducting layer 103 and a heat-resistant layer 104 along its radial direction from the outside to the inside. The heat-conducting layer 103 is provided with a heating tube 9 wound from top to bottom along the contour of the heat-resistant layer 104. The input end of the heating tube 9 is fixedly connected to a water inlet pipe 15, and the output end of the heating tube 9 is fixedly connected to a water supply pipe 16. The water inlet pipe 15 is fixedly connected to a collecting box 19, and the collecting box 19 is connected to the water supply pipe 16.

[0064] The specific implementation process is as follows: During the incineration work, the heat generated by the combustion of straw and combustion-supporting agent will be transferred to the heat-resistant layer 104 in the first time. The heat-resistant layer 104 can maintain a stable state in a high temperature environment. The outer shell layer 101 plays a role in protecting the device and reducing the risk of fire and explosion. While the two ensure stable work, they can also play a role in fire prevention and explosion prevention to a certain extent, reduce heat loss, improve heating efficiency and reduce energy costs.

[0065] When heat passes through the heat-resistant layer 104 and reaches the heat-conducting layer 103, the heat-conducting layer 103 can promote the uniform distribution of temperature in the incineration chamber. Since the heating tube 9 is wrapped from top to bottom along the contour of the heat-resistant layer 104 under the wrapping of the heat-conducting layer 103, the heating area of ​​the heating tube 9 is greatly increased. The water in the heating tube 9 is continuously circulated and heated in the heating tube through the collection box 19, and can quickly reach the required temperature and pressure conditions for heat energy conversion, thereby increasing the efficiency of heat energy transfer and utilization generated by straw combustion. The insulation layer 102 can effectively prevent the heat inside the insulation layer 102 from being transferred to the external environment, causing heat energy loss.

[0066] Example 3:

[0067] As attached Figure 1 As shown, the difference from Example 2 is that a feed pipe is fixedly connected to the top of the incineration chamber, a solenoid valve 6 is connected to the inner thread of the feed pipe, the signal of the input end of the solenoid valve 6 is connected to the output end of the controller 11, and the other end of the feed pipe is fixedly connected to an auger conveyor 7, and the internal blades of the auger conveyor 7 are welded with a number of crushing teeth.

[0068] The specific implementation process is as follows: when adding straw to the combustion chamber, the staff uses the controller 11 to open the solenoid valve 6 in the feed pipe, starts the auger conveyor 7 and puts in the straw. The conveyor impeller can perform simple crushing when transmitting large pieces of straw, and transport them to the feed pipe to enter the incineration chamber. Small pieces of straw can have a larger surface area in contact with the air and the gaps between them are larger, which is conducive to air circulation, thereby absorbing heat faster and increasing the combustion rate; when straw is added during the incineration process, the heat in the incineration chamber will be transferred to the auger conveyor 7 through the feed pipe to preheat the straw and improve energy utilization efficiency. When there is no need to add and preheat straw, the solenoid valve 6 is closed to reduce heat loss in the incineration chamber.

[0069] Example 4:

[0070] As attached Figure 1 As shown, the difference from Example 3 is that the bottom of the incineration chamber is fixedly connected to an air inlet pipe 17, which is arranged around the outside of the water pipe 16; the top of the incineration chamber is fixedly connected to a heat dissipation pipe 14, which is arranged around the outside of the auger conveyor 7.

[0071] The specific implementation process is as follows: during the straw burning process, when other combustion-supporting gases need to be added, they can be added to the box through the air inlet pipe 17; when cleaning the device, the starting motor 5 is driven by the gear group to rotate the stirring rod and the stirring shaft, and the air inlet is connected to the high-speed airflow entering the incineration chamber to impact the stirring rod and the stirring shaft to achieve a cleaning effect while pushing the exhaust gas through the heat dissipation pipe 14 to be discharged to the gas treatment device.

[0072] During the incineration operation, the air inlet pipe 17 is connected to the room temperature gas to enter the incineration chamber. Under the action of air pressure, the high temperature gas in the incineration chamber will be discharged through the heat dissipation pipe 14 to achieve the effect of regulating the temperature.

[0073] During the exhaust process, the heat dissipation pipe 14 is wrapped and fitted with the auger conveyor 7, which effectively improves the heat transfer efficiency and has the function of preheating the straw in the auger conveyor 7; during the water supply process, the water supply pipe 16 is wrapped and fitted with the air inlet pipe 17, which improves the heat transfer efficiency. The heat transfer of the water supply pipe 16 is used to preheat the gas in the air inlet pipe 17, and the heat of the exhaust device is used and brought back into the device, effectively improving the energy utilization rate.

[0074] Example 5:

[0075] As attached Figure 1 As shown, the difference from Example 4 is that a slag discharge pipe connected to the incineration chamber is provided at the bottom of the cylinder 1, the bottom of the incineration chamber is bowl-shaped, the slag discharge pipe is located in the center of the bowl, a valve 13 is provided in the slag discharge pipe, and a retaining frame 18 is welded in the slag discharge pipe; a crushing rod 12 is welded to the bottom of the stirring shaft, and the crushing rod 12 is rotatably connected to the retaining frame 18.

[0076] The specific implementation process is as follows: After straw incineration, slag is produced. Under the action of gravity, it flows along the bottom wall of the incineration chamber toward the slag discharge port. Driven by the rotating agitator shaft, the crushing rod 12 breaks up the large pieces of slag that have gathered at the slag discharge port and then opens the valve 13 to discharge it. The design of the retaining frame 18 and the crushing rod 12 is rotatably connected to the design, which reduces the vibration of the crushing rod 12, the agitator shaft, and the stirring rod during operation, maintaining stability.

[0077] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A waste heat recovery type straw pulverized coal combustion device, comprising a cylinder (1) and a combustion ignition machine (10), characterized in that: A transmission cavity is provided at the top of the cylinder (1), a transmission assembly (2) is provided in the transmission cavity, the transmission assembly (2) passes through the transmission cavity and extends to the top of the cylinder (1) and is fixedly connected to a motor (5), an incineration chamber is provided below the transmission cavity, a combustion ignition machine (10) is provided at the bottom of the incineration chamber, a pipeline stirring assembly (8) for stirring straw and spraying combustion-supporting agent is rotatably connected to the top of the cylinder (1), the pipeline stirring assembly (8) extends into the incineration chamber, and a combustion-supporting assembly for transmitting fuel is rotatably connected to the top of the pipeline stirring assembly (8); The pipeline stirring assembly (8) includes a stirring shaft, a plurality of stirring rods are fixedly connected to the stirring shaft, a main pipeline and a secondary pipeline are respectively provided in the stirring shaft and the stirring rods, the secondary pipeline is connected to the main pipeline, and the secondary pipeline is connected to a plurality of injection ports, the combustion-supporting assembly is connected to the main pipeline, and the top end of the stirring shaft is fixedly connected to the transmission assembly (2).

2. The waste heat recovery type straw pulverized coal combustion equipment according to claim 1, characterized in that: The cylinder (1) is provided with an outer shell layer (101), a heat-insulating layer (102), a heat-conducting layer (103) and a heat-resistant layer (104) arranged from outside to inside in a radial direction. A heating pipe (9) is provided in the heat-conducting layer (103) and is wound from top to bottom along the contour of the heat-resistant layer (104). The input end of the heating pipe (9) is fixedly connected to a water inlet pipe (15), and the output end of the heating pipe (9) is fixedly connected to a water delivery pipe (16). The water inlet pipe (15) is fixedly connected to a collection box (19), and the collection box (19) is connected to the water delivery pipe (16).

3. The waste heat recovery type straw pulverized coal combustion equipment according to claim 2, characterized in that: The top of the incineration chamber is fixedly connected to a feeding pipe, a solenoid valve (6) is fixedly connected inside the feeding pipe, the input end signal of the solenoid valve (6) is connected to the output end of the controller (11), and the other end of the feeding pipe is fixedly connected to an auger conveyor (7).

4. The waste heat recovery type straw pulverized coal combustion equipment according to claim 3, characterized in that: The bottom of the incineration chamber is fixedly connected with an air inlet pipe (17), and the air inlet pipe (17) is arranged around the outside of the water delivery pipe (16).

5. The waste heat recovery type straw pulverized coal combustion equipment according to claim 4, characterized in that: The top of the incineration chamber is fixedly connected with a heat dissipation pipe (14), and the heat dissipation pipe (14) is arranged around the outside of the auger conveyor (7).

6. The waste heat recovery type straw pulverized coal combustion equipment according to claim 5, characterized in that: The internal blades of the auger conveyor (7) are all fixedly connected with a plurality of crushing teeth.

7. The waste heat recovery type straw pulverized coal combustion equipment according to claim 6, characterized in that: A slag discharge pipe communicating with the incineration chamber is provided at the bottom of the cylinder (1), a valve (13) is provided in the slag discharge pipe, and a retaining frame (18) is fixedly connected to the slag discharge pipe; a crushing rod (12) is fixedly connected to the bottom of the stirring shaft, and the crushing rod (12) is rotatably connected to the retaining frame (18).

8. The waste heat recovery type straw pulverized coal combustion equipment according to claim 7, characterized in that: The bottom of the incineration chamber is bowl-shaped.

9. The waste heat recovery type straw pulverized coal combustion equipment according to claim 8, characterized in that: The combustion-supporting component comprises a jet pump, the jet pump is fixedly connected to a gas pipe (3), and the gas pipe (3) is rotatably connected to a main pipeline and is in communication with each other.

10. The waste heat recovery type straw pulverized coal combustion equipment according to claim 9, characterized in that: The transmission assembly (2) includes a driving gear, which is coaxially fixedly connected to the output shaft of the motor (5), the motor (5) is fixedly connected to the top of the cylinder (1), the driving gear is meshed with a driven gear, and the driven gear is sleeved on the top of the stirring shaft; A through hole is provided at the bottom of the transmission cavity, the through hole is connected to the incineration chamber, a temperature sensor (4) is fixedly connected in the through hole, and a signal at the output end of the temperature sensor (4) is connected to the input end of the controller (11).

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