Hydraulic push rod push type alternative fuel stepped furnace system

Abstract

The invention provides a hydraulic push rod push type alternative fuel stepped furnace system, and belongs to the technical field of alternative fuel combustion in industry. A hydraulic push rod push type alternative fuel stepped furnace system comprises a stepped furnace body and an electric control unit, a temperature control unit and an air supply unit are arranged in the stepped furnace body, the temperature control unit comprises a raw material inlet, and the raw material inlet is formed in the stepped furnace body; the electric control unit is in communication connection with the temperature control unit and the air supply unit and is used for controlling the transportation of fuel into the stepped furnace body; the temperature in the stepped furnace body is obtained in real time; when the temperature exceeds the preset temperature, the temperature control unit is started, and the hot raw materials are conveyed into the stepped furnace body through the temperature control unit; and when the temperature is lower than the preset temperature, the temperature control unit is closed. The stepped furnace has the beneficial effects that the temperature in the stepped furnace can be adjusted, so that the temperature in the stepped furnace reaches a proper combustion temperature.

Description

Technical Field

[0001] The present invention belongs to the technical field of alternative fuel combustion in industry, and particularly relates to a hydraulic push rod propulsion type alternative fuel stepped furnace system. Background Art

[0002] With the enhancement of environmental awareness and the increasing tension of resources, alternative fuels, as a new type of energy, can effectively reduce the use of fossil fuels, help enterprises improve the energy consumption level of product production, reduce the carbon emission intensity, and enhance the market competitiveness of products. They are gradually attracting the attention of the cement and power generation industries. However, due to the differences in physical properties, the combustion process of alternative fuels is often less stable than that of traditional fuels and requires more refined combustion control.

[0003] As an effective combustion device, a stepped furnace can achieve the efficient utilization of alternative fuels through multi-stage material sorting and combustion. However, in China, the types of alternative fuels are complex, the composition fluctuates greatly, and the combustion characteristics are diverse. Existing stepped furnaces still have deficiencies in feeding and promoting the combustion of materials, such as uneven feeding, incomplete combustion, poor discharging, and high system operation requirements. Therefore, a hydraulic push rod propulsion type alternative fuel stepped furnace system is proposed to solve the above problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is the uneven feeding, incomplete combustion, and poor discharging of the stepped furnace. In view of the deficiencies of the prior art, a hydraulic push rod propulsion type alternative fuel stepped furnace system is provided.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: a hydraulic push rod propulsion type alternative fuel stepped furnace system, including a stepped furnace body and an electric control unit. A temperature control unit and a air supply unit are arranged inside the stepped furnace body. The temperature control unit includes a raw material inlet, and the raw material inlet is opened on the stepped furnace body. The electric control unit is respectively communicatively connected with the temperature control unit and the air supply unit. The electric control unit is used for: Controlling the transportation of fuel to the stepped furnace body; Obtaining the temperature inside the stepped furnace body in real time; When the temperature exceeds the preset temperature, starting the temperature control unit to transport raw materials to the stepped furnace body through the temperature control unit; When the temperature is lower than the preset temperature, the temperature control unit is closed.

[0006] Furthermore, the stepped furnace body includes a first pressure transmitter which is arranged above the stepped furnace body. A hydraulic push rod is provided at the bottom of the stepped furnace body. A high-temperature camera is arranged above the stepped furnace body. A decomposition furnace is provided outside the stepped furnace body. A second thermocouple is arranged above the stepped furnace body. A second metal expansion joint is provided at the connection between the stepped furnace body and the decomposition furnace. The decomposition furnace is connected with a feed chute.

[0007] Furthermore, it includes a belt conveyor which is arranged outside the stepped furnace body. A first gravity flap air lock valve is arranged below the belt conveyor. A second gravity flap air lock valve is arranged below the first gravity flap air lock valve. A first pneumatic slide gate valve is arranged below the second gravity flap air lock valve. A first thermocouple is arranged below the first pneumatic slide gate valve. A pneumatic three-way distributor valve is arranged below the first thermocouple. A second pneumatic slide gate valve for quickly cutting off the material flow is arranged below the pneumatic three-way distributor valve. A first metal expansion joint is arranged below the second pneumatic slide gate valve. A lock-air feeding screw conveyor is arranged between the pneumatic three-way distributor valve and the stepped furnace body.

[0008] Furthermore, the air supply unit includes an electric control valve. A high-temperature heat source inlet is arranged above the stepped furnace body. The high-temperature heat source inlet and the stepped furnace body are connected by a high-temperature heat source pipe. The electric control valve is located on the high-temperature heat source pipe. A third thermocouple is arranged outside the high-temperature heat source pipe. A second pressure transmitter is arranged on the right side of the third thermocouple. A fourth metal expansion joint is arranged at the air inlet of the high-temperature heat source pipe and the stepped furnace body.

[0009] Furthermore, the temperature control unit further includes a cyclone discharge chute which is arranged above the stepped furnace body. An electric three-way distributor valve for feeding raw materials into the stepped furnace body is arranged below the cyclone discharge chute. A third gravity flap air lock valve is arranged below the electric three-way distributor valve. A third metal expansion joint is arranged below the third gravity flap air lock valve.

[0010] Furthermore, a high-temperature heat source inlet is opened above the stepped furnace body. The high-temperature heat source inlet accesses the high-temperature hot air of the rotary kiln system as the heat source and the source of combustion air.

[0011] Furthermore, the stepped furnace body is a fixed type. Inside the stepped furnace body, there are drying stockpiling steps and combustion steps for placing alternative fuels.

[0012] Furthermore, the number of the hydraulic push rods is the same as the number of combustion steps, and a set of the hydraulic push rods is arranged on each combustion step. The hydraulic push rods are used to push the material forward on the stepped combustion platform.

[0013] Furthermore, the actuator is electrically connected to the controller. The actuator is used to receive the instruction of the controller. The actuator is electrically connected to the hydraulic push rods. The actuator is used to drive the hydraulic push rods to make a push.

[0014] Furthermore, the hydraulic push rod includes a hydraulic cylinder, a push rod and a connecting piece. The hydraulic cylinder is fixedly installed on the rear side wall of the step of the stepped furnace body. The push rod is connected to the piston rod of the hydraulic cylinder. The connecting piece is used to fixedly connect the push rod and the high-temperature and corrosion-resistant push plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By monitoring the temperatures on both sides of the outer wall of each step of the present invention and combining with the images of the high-temperature cameras, the combustion condition of the alternative fuel can be accurately judged. And through the cooperation with the electric three-way material distributing valve, the No. 3 heavy hammer flap air lock valve and the control feeding unit, the temperature inside the step can be adjusted so that the temperature inside the step reaches a suitable combustion temperature.

[0016] 2. By controlling the feeding system to control the hydraulic push rods to accurately control the advancing speed of the material, the efficient combustion of the alternative fuel is realized, the accumulation of the material is avoided, the thermal utilization rate of the alternative fuel is improved. At the same time, due to the complete combustion, the emissions of harmful gases such as carbon dioxide, nitrogen oxides and particulate matters are reduced, achieving the purpose of environmental protection and emission reduction.

[0017] 3. By adopting the cooperation of the hydraulic push rods and the physical properties of the material, the device can adapt to alternative fuels with different combustion properties, different specific gravities, different moisture contents and different forms. At the same time, through the control system, automatic control is realized, manual operation is reduced, and the production efficiency and safety are improved.

[0018] 4. Reduce the influence on the working conditions of the cement kiln. The alternative fuel after incineration is in the state of ash particles, which is convenient to be smoothly carried away by the high-temperature heat source and the gas flow in the decomposition furnace, avoiding the ash slag from settling in the decomposition furnace and falling into the kiln tail smoke chamber, resulting in the passivity of the kiln condition, the crusting and looping of the kiln tail smoke chamber, and destroying the pressure balance and affecting the normal production of the clinker. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following further describes the present invention in detail with reference to the drawings.

[0020] Figure 1 : Schematic diagram of the overall structure of the present invention; Figure 2 : Schematic diagram of the partial structure of the stepped furnace body of the present invention; Figure 3 : Side view of the stepped furnace body of the present invention; Figure 4 : Partial schematic diagram of the hydraulic push rod of the present invention; Figure 5 : PID diagram of the stepped furnace body of the present invention.

[0021] Among them, 1. Belt conveyor; 2. First gravity flap air lock valve; 3. Second gravity flap air lock valve; 4. First pneumatic gate valve; 5. First thermocouple; 6. Pneumatic three-way distributing valve; 7. Second pneumatic gate valve; 8. First metal expansion joint; 9. Stepped furnace body; 10. High-temperature camera; 11. First pressure transmitter; 12. Second thermocouple; 13. Second metal expansion joint; 14. Electric three-way distributing valve; 15. Third gravity flap air lock valve; 16. Third metal expansion joint; 17. Electric control valve; 18. Third thermocouple; 19. Second pressure transmitter; 20. Fourth metal expansion joint; 21. Air lock feeding screw conveyor; 22. Hydraulic push rod; 23. Raw material inlet; 24. Feeding chute; 25. High-temperature heat source inlet. Detailed implementation manners

[0022] To better understand the present invention, the content of the present invention will be further clearly elaborated below in conjunction with embodiments and drawings. However, the protection scope of the present invention is not limited to the following embodiments. In the following description, a large number of specific details are given to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details.

[0023] In this embodiment, refer to Figures 1-3 , a hydraulic push rod propulsion type alternative fuel stepped furnace system, which includes a stepped furnace body 9 and an electric control unit. A temperature control unit and a air supply unit are arranged inside the stepped furnace body 9. The temperature control unit includes a raw material inlet 23, and the raw material inlet 23 is opened on the stepped furnace body 9; The electric control unit is respectively communicatively connected with the temperature control unit and the air supply unit, and the electric control unit is used for: Controlling the transportation of fuel into the stepped furnace body 9; Real-time acquiring the temperature inside the stepped furnace body 9; When the temperature exceeds the preset temperature, turning on the temperature control unit and transporting raw materials into the stepped furnace body 9 through the temperature control unit; When the temperature is lower than the preset temperature, the temperature control unit is closed.

[0024] It should be noted that the feeding control unit further includes a sensor and an actuator. The sensor is used to monitor the combustion state inside the stepped furnace body 9. The sensor includes a temperature monitoring device and a pressure monitoring device. The temperature monitoring device is used to monitor the temperature inside the stepped furnace body 9 and at each step in real time to ensure that the material burns at an appropriate temperature. The pressure monitoring device is used to monitor the pressure during the combustion process and maintain the furnace pressure within a certain range of variation to ensure the safe operation of the stepped furnace body 9. The controller controls the temperature control unit and the feeding control unit according to the monitoring results of the sensor, solving the problem of the different combustion times of different materials. The actuator is connected to the controller and is used to receive the instructions from the controller.

[0025] Technical effect: By using the cooperation among the temperature control unit, the feeding control unit and the air supply unit, the temperature inside the stepped furnace body 9 can be adjusted. When the temperature inside the stepped furnace body 9 is too high, the controller will control the temperature control unit to put raw materials into the stepped furnace body 9 to cool it down. When the temperature inside the stepped furnace body 9 is lower than the preset temperature, the controller will control the temperature control unit to turn it off.

[0026] In this embodiment, the temperature control unit further includes a cyclone discharge chute. The cyclone discharge chute is arranged above the stepped furnace body 9. An electric three-way distributor valve 14 is arranged below the cyclone discharge chute for putting raw materials into the stepped furnace body 9. A third gravity flap air lock valve 15 is arranged below the electric three-way distributor valve 14, and a third metal expansion joint 16 is arranged below the third gravity flap air lock valve 15.

[0027] It should be added that a C5 cyclone of a six-stage preheater or a C4 cyclone discharge chute of a five-stage preheater is arranged outside the stepped furnace body 9. Both the C5 cyclone of the six-stage preheater and the C4 cyclone of the five-stage preheater are used for heat exchange, using the high-temperature flue gas at the kiln tail to further heat the raw materials, so that the raw materials are heated to 800 - 900 degrees Celsius to become hot raw materials, with the characteristics of low resistance and high efficiency. The new cyclone reduces the resistance by improving the shape of the air inlet or adding a flow guiding device.

[0028] Technical effect: When the temperature inside the stepped furnace body 9 exceeds the preset temperature, by putting the hot raw materials into the stepped furnace body 9 from the electric three-way distributor valve 14, the temperature inside the stepped furnace body 9 drops to the preset temperature.

[0029] Optionally, the feeding control unit includes a belt conveyor 1, which is arranged on the outside of the step furnace body 9, and a No. 1 weight hammer flap lock air valve 2 is arranged below the belt conveyor 1, and a No. 2 weight hammer flap lock air valve 3 is arranged below the No. 1 weight hammer flap lock air valve 2, and a first pneumatic gate valve 4 is arranged below the No. 2 weight hammer flap lock air valve 3, and a No. 1 thermocouple 5 is arranged below the first pneumatic gate valve 4, and a pneumatic three-way material distribution valve 6 is arranged below the No. 1 thermocouple 5, and a second pneumatic gate valve 7 is arranged below the pneumatic three-way material distribution valve 6 for quickly cutting off the material flow, and a first metal expansion joint 8 is arranged below the second pneumatic gate valve 7, and a wind-locking feeding screw conveyor 21 is arranged between the pneumatic three-way material distribution valve 6 and the step furnace body 9.

[0030] It should be added that in the process of controlling the feeding, the accuracy and reliability of the combustion process are ensured by accurately metering the alternative fuel and adopting a stable feeding method, and the air-locking and unloading are achieved through the No. 1 heavy hammer flap lock air valve 2 and the No. 2 heavy hammer flap lock air valve 3.

[0031] Technical effect: The pneumatic three-way dividing valve 6 and the first pneumatic gate valve 4 and the second pneumatic gate valve 7 are used in coordination to quickly cut off the material flow, thereby achieving accurate dividing and control of the alternative fuel. A first metal expansion joint 8 is arranged at the feed port of the air-locking feeding screw conveyor 21 to effectively absorb the heat generated by thermal expansion and contraction, thereby protecting the safe operation of the equipment. The accuracy and reliability of the combustion process are ensured by accurately metering the alternative fuel and using stable feeding.

[0032] Optionally, the air supply unit includes an electric regulating valve 17, a high-temperature heat source access port 25 is provided above the step furnace body 9, the high-temperature heat source access port 25 is connected to the step furnace body 9 through a high-temperature heat source pipe, the electric regulating valve 17 is located on the high-temperature heat source pipe, a No. 3 thermocouple 18 is provided on the outside of the high-temperature heat source pipe, a No. 2 pressure transmitter 19 is provided on the right side of the No. 3 thermocouple 18, and a fourth metal expansion joint 20 is provided between the high-temperature heat source pipe and the air inlet of the step furnace body 9.

[0033] Technical effect: High-temperature hot air is delivered to the interior of the stepped furnace body 9 to provide sufficient oxygen and heat for the combustion of alternative fuels. At the same time, the cooperation between the electric control valve 17, the No. 3 thermocouple 18 and the No. 2 pressure transmitter 19 can monitor the wind temperature and wind pressure of the high-temperature hot air. By setting the fourth metal expansion joint 20 between the high-temperature heat source pipe and the air inlet of the stepped furnace body 9, the expansion heat can be absorbed.

[0034] Optionally, the pusher mechanism includes a first pressure transmitter 11, which is arranged above the stepped furnace body 9. A second thermocouple 12 is provided above the stepped furnace body 9. A hydraulic push rod 22 is provided at the bottom of the stepped furnace body 9. A high-temperature camera 10 is provided above the stepped furnace body 9. A decomposition furnace is provided outside the stepped furnace body 9. A second metal expansion joint 13 is provided at the connection between the stepped furnace body 9 and the decomposition furnace. The decomposition furnace is connected to a feed chute 24. The stepped furnace body 9 is a fixed type. Inside the stepped furnace body 9, there are drying stockpiling steps and combustion steps for placing alternative fuels.

[0035] In addition, the alternative fuel enters the inside of the stepped furnace body 9 through the forced feeding of the air-lock feeding screw conveyor 21. First, it accumulates on the drying stockpiling steps and contacts the high-temperature heat source at 900 - 1150 °C to dry a part of the moisture. Then, after the combustibles burn, the fine particles are suspended with the high-temperature heat source and enter the decomposition furnace to continue burning. The substances not carried away are pushed by the air-lock feeding screw conveyor 21 to the next step to continue burning. The advancing speed of each hydraulic push rod 22 can be controlled according to the combustion characteristics of different alternative fuels. For example, when encountering extremely flammable materials such as waste textiles, the advancing speed of the hydraulic push rod 22 can be increased to avoid the over-high temperature in the furnace due to the long burning time of the waste textiles in the stepped furnace. When encountering alternative fuels that are prone to crust formation and material collapse after combustion, the advancing speed of the hydraulic push rod 22 can be appropriately slowed down to make it burn as much as possible in the stepped furnace and avoid falling into the kiln tail smoke chamber and affecting the stability of the kiln system.

[0036] Technical effects: By controlling the advancing speed of the hydraulic push rod 22, it can adapt to the combustion characteristics of different alternative fuels, improve the combustion efficiency and heat utilization rate, achieve the efficient combustion of alternative fuels, reduce the dependence on traditional fuels, avoid material accumulation, improve the heat utilization rate of alternative fuels, reduce the emissions of harmful gases such as carbon dioxide, nitrogen oxides, and particulate matter due to full combustion, and achieve the purpose of environmental protection and emission reduction. The design of the hydraulic push rod 22 takes into account the physical properties of the materials, enabling the device to adapt to alternative fuels with different combustion properties, different specific gravities, different moisture contents, and different forms.

[0037] Optionally, the hydraulic push rod 22 includes a hydraulic cylinder, a push rod, and a connecting piece. The hydraulic cylinder is fixedly installed on the rear side wall of the step of the stepped furnace body 9. The push rod is connected to the piston rod of the hydraulic cylinder. The connecting piece is used to fixedly connect the push rod with a high-temperature and corrosion-resistant push plate, so that when the hydraulic cylinder pushes the push rod, it can drive the fuel to advance on the stepped combustion platform.

[0038] Optionally, a high-temperature heat source inlet is provided above the stepped furnace body 9. The high-temperature heat source inlet is connected to the high-temperature heat source of the cement kiln system and is used as the heat source and the source of combustion air, which can provide sufficient oxygen for the combustion of the substances inside the stepped furnace body 9, thereby improving the combustion efficiency.

[0039] Optionally, the number of hydraulic push rods 22 is the same as the number of combustion steps, and a group of hydraulic push rods 22 is provided on each combustion step. The hydraulic push rods 22 are used to propel the material forward on the stepped combustion platform. The purpose is to propel the material forward according to the combustion situation of the material on the combustion step, and then propel the material forward according to the combustion time of different substances, so that the material can be fully burned.

[0040] Optionally, the actuator is electrically connected to the controller, and the actuator is used to receive instructions from the controller. The actuator is electrically connected to the hydraulic push rod 22, and the actuator is used to drive the hydraulic push rod 22 to advance, thereby adjusting the advancement speed of the hydraulic push rod 22.

[0041] It should be added that Figure 5 In the figure, the circle plus letters in the legend represent the field-installed instrument, the circle plus the box plus letters represent the control center display instrument, the connection line connected to the field-installed instrument is the instrument connection line, the connection line connected to the control center display instrument is the control function connection line, and the line connecting the field-installed instrument and the control center display instrument is the electrical signal line, where PID represents the controller, the first letter of the letter in the instrument is the first letter, the first letter A represents the analysis of the measured or started variable, C represents the conductivity of the measured or started variable, E represents the voltage of the measured or started variable, I represents the current of the measured or started variable, O represents the fill ratio of the measured or started variable, and P represents the measured or started variable. Pressure or vacuum, S represents the speed and frequency of measuring or starting variables and the safety of the trimmer, T represents the temperature of measuring or starting variables, and Z represents the position and size of measuring or starting variables; the letters after the first letter in the instrument are represented by subsequent letters, among which A represents the alarm function, C represents the control of the output function, E represents the sensor (primary element), I represents the display function, O represents the orifice plate and the restriction function and the switch function of the trimmer, P represents the test point and the connection function, S represents the switch function, T represents the sending function, and Z represents the driver and actuator, which facilitates the control of the working process of the entire step furnace body 9 and improves the working efficiency of the step furnace body 9.

[0042] Working principle: After being metered, the alternative fuel is fed onto the tail of the kiln by the belt conveyor 1. Then, airtight feeding is achieved through the No. 1 heavy hammer flap air lock valve 2 and the No. 2 heavy hammer flap air lock valve 3. After that, it enters the airtight feeding screw conveyor 21 of the alternative fuel stepped furnace through the pneumatic three-way distributing valve 6 respectively. The first pneumatic slide gate valve 4 and the second pneumatic slide gate valve 7 are used to quickly cut off the material flow for emergency or maintenance. Due to the thermal expansion and contraction of the stepped furnace body 9, the first metal expansion joint 8 absorbs the expansion heat to protect the equipment. The hot air introduced from the high-temperature heat source pipe enters the high-temperature heat source inlet 25 above the stepped furnace body 9 to provide sufficient oxygen and heat for the combustion of the alternative fuel. The electric control valve 17 installed on the high-temperature heat source pipe is used to adjust the high-temperature heat source quantity. At the same time, the No. 3 thermocouple 18 and the No. 2 pressure transmitter 19 monitor the air temperature and air pressure respectively, and the fourth metal expansion joint 20 absorbs the expansion heat. When the temperature inside the stepped furnace is too high, raw meal can be fed into the electric three-way distributing valve 14 installed under the C5 cyclone chute of the sixth-stage preheater. The raw meal becomes hot raw meal under the action of the C5 cyclone of the sixth-stage preheater and is fed into the stepped furnace. The heat is taken away by the decomposition and heat absorption of the hot raw meal, thereby reducing the temperature inside the stepped furnace. At the same time, the No. 3 heavy hammer flap air lock valve 15 feeds the material with airtightness, and the third metal expansion joint 16 absorbs the expansion heat. At the same time, the alternative fuel enters the inside of the alternative fuel stepped furnace through the forced feeding of the airtight feeding screw conveyor 21. First, it accumulates on the drying stockpiling step and contacts the high-temperature heat source at 900 - 1150 °C to dry part of the moisture. Then, after the combustibles burn, the fine particles are suspended with the high-temperature heat source and enter the decomposition furnace to continue burning. The substances not carried away are pushed by the airtight feeding screw conveyor 21 to the next step to continue burning. The advancing speed of each hydraulic push rod 22 can be controlled according to the combustion characteristics of different alternative fuels. By setting the high-temperature camera 10, the combustion situation of the alternative fuel in the furnace can be observed in real time through the central control screen. In case of abnormal combustion or equipment failure, etc., emergency treatment can be carried out through the first pneumatic slide gate valve 4 and the second pneumatic slide gate valve 7 that quickly cut off the material flow to ensure the safe operation of the production line. At the same time, the combustion situation of the alternative fuel is judged through the temperature change and the image of the high-temperature camera 10, and then the advancing speed of the hydraulic push rod 22 and the high-temperature heat source quantity are adjusted. This embodiment realizes the efficient combustion of the alternative fuel, reduces the dependence on traditional fuels, helps to reduce energy consumption and environmental pollution, and meets the requirements of energy conservation, emission reduction and sustainable development in the cement industry.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Any other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention shall be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims

1. A hydraulic push rod propulsion alternative fuel step furnace system, characterized in that: It comprises a stepped furnace body (9) and an electric control unit, wherein a temperature control unit and an air supply unit are arranged inside the stepped furnace body (9), wherein the temperature control unit comprises a raw material inlet (23), and the raw material inlet (23) is opened on the stepped furnace body (9); The electric control unit is respectively connected to the temperature control unit and the air supply unit for communication, and the electric control unit is used for: Controlling the transport fuel to enter the stepped furnace body (9); Acquiring the temperature inside the stepped furnace body (9) in real time; When the temperature exceeds a preset temperature, the temperature control unit is turned on, and the raw material is transported into the stepped furnace body (9) through the temperature control unit; When the temperature is lower than the preset temperature, the temperature control unit is turned off.

2. The hydraulic push rod propulsion alternative fuel step furnace system according to claim 1, characterized in that: The stepped furnace body (9) includes a No. 1 pressure transmitter (11), which is arranged above the stepped furnace body (9). A hydraulic push rod (22) is provided at the bottom of the stepped furnace body (9). A high-temperature camera (10) is provided above the stepped furnace body (9). A decomposition furnace is provided outside the stepped furnace body (9). A No. 2 thermocouple (12) is provided above the stepped furnace body (9). A second metal expansion joint (13) is provided at the connection between the stepped furnace body (9) and the decomposition furnace. The decomposition furnace is connected to a feed chute (24).

3. The hydraulic push rod propulsion alternative fuel step furnace system according to claim 1, characterized in that: The invention comprises a belt conveyor (1), wherein the belt conveyor (1) is arranged outside the stepped furnace body (9), a No. 1 heavy hammer flap air lock valve (2) is arranged below the belt conveyor (1), a No. 2 heavy hammer flap air lock valve (3) is arranged below the No. 1 heavy hammer flap air lock valve (2), a first pneumatic gate valve (4) is arranged below the No. 2 heavy hammer flap air lock valve (3), a No. 1 thermocouple (5) is arranged below the first pneumatic gate valve (4), a pneumatic three-way material distribution valve (6) is arranged below the No. 1 thermocouple (5), a second pneumatic gate valve (7) is arranged below the pneumatic three-way material distribution valve (6) for quickly cutting off the material flow, a first metal expansion joint (8) is arranged below the second pneumatic gate valve (7), and an air-locking feeding screw conveyor (21) is arranged between the pneumatic three-way material distribution valve (6) and the stepped furnace body (9).

4. The hydraulic push rod propulsion alternative fuel step furnace system according to claim 1, characterized in that: The air supply unit includes an electric regulating valve (17). A high-temperature heat source access port (25) is provided above the stepped furnace body (9). The high-temperature heat source access port (25) is connected to the stepped furnace body (9) via a high-temperature heat source pipe. The electric regulating valve (17) is located on the high-temperature heat source pipe. A No. 3 thermocouple (18) is provided on the outside of the high-temperature heat source pipe. A No. 2 pressure transmitter (19) is provided on the right side of the No. 3 thermocouple (18). A fourth metal expansion joint (20) is provided between the high-temperature heat source pipe and the air inlet of the stepped furnace body (9).

5. The hydraulic push rod-propelled alternative fuel step furnace system according to claim 4, characterized in that: The temperature control unit further comprises a cyclone discharge chute, the cyclone discharge chute being arranged above the stepped furnace body (9), an electric three-way material distribution valve (14) being arranged below the cyclone discharge chute for feeding raw materials into the stepped furnace body (9), a No. 3 weight hammer flap air lock valve (15) being arranged below the electric three-way material distribution valve (14), and a third metal expansion joint (16) being arranged below the No. 3 weight hammer flap air lock valve (15).

6. The hydraulic push rod-propelled alternative fuel step furnace system according to claim 1, characterized in that: A high-temperature heat source inlet is provided above the stepped furnace body (9), and the high-temperature heat source inlet is connected to the high-temperature hot air of the rotary kiln system as a heat source and a combustion air source.

7. The hydraulic push rod driven alternative fuel step furnace system according to claim 1, characterized in that: The stepped furnace body (9) is a fixed step, and a drying and stacking step and a combustion step for placing alternative fuels are provided inside the stepped furnace body (9).

8. The hydraulic push rod-propelled alternative fuel step furnace system according to claim 5, characterized in that: The number of the hydraulic push rods (22) is the same as the number of the combustion steps, and a group of the hydraulic push rods (22) is provided on each combustion step. The hydraulic push rods (22) are used to propel materials forward on the stepped combustion platform.

9. The hydraulic push rod driven alternative fuel step furnace system according to claim 1, characterized in that: The actuator is electrically connected to the controller, and is used to receive instructions from the controller. The actuator is electrically connected to the hydraulic push rod (22), and is used to drive the hydraulic push rod (22) to propel the vehicle.

10. The hydraulic push rod driven alternative fuel step furnace system according to claim 5, characterized in that: The hydraulic push rod (22) comprises a hydraulic cylinder, a push rod and a connecting piece, wherein the hydraulic cylinder is fixedly mounted on the rear side wall of the step of the stepped furnace body (9), the push rod is connected to the piston rod of the hydraulic cylinder, and the connecting piece is used to fixedly connect the push rod to the high temperature and corrosion resistant push plate.

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