A continuous, efficient and green waste tire autonomous superheated steam energy conversion system

Abstract

The invention discloses a continuous, efficient and green waste tire autonomous superheated steam energy conversion system, which comprises: a pyrolysis system, the pyrolysis system comprises one or more pyrolysis devices connected in sequence, the pyrolysis device comprises a pyrolysis feed inlet, a pyrolysis discharge port, a pyrolysis superheated steam inlet, a pyrolysis gas outlet and a pyrolysis heating device; a gas conversion system, the gas conversion system comprises a conversion device and a combustion chamber, the conversion device comprises a conversion feed inlet, a conversion discharge port and a conversion superheated steam inlet; a superheated steam generator, the superheated steam generator generates superheated steam, and the superheated steam is transported to a superheated steam pipeline; the invention solves the problems of high energy consumption, low cracking efficiency, difficulty in comprehensive utilization of cracking products and non-compliance with environmental protection requirements, low controllability of the cracking process, etc. in the cracking process of waste tire rubber, converts waste tires into clean combustible energy gas, and realizes energy conversion and clean and efficient utilization of waste tires.

Description

Technical Field

[0001] The invention relates to a waste tire processing system, in particular to a continuous, efficient and green waste tire autonomous superheated steam energy conversion system. Background Art

[0002] Tires are mainly composed of rubber (including natural rubber and synthetic rubber), carbon black and a variety of organic and inorganic additives (including plasticizers, antioxidants, sulfur and zinc oxide, etc.). With the sustained and rapid development of the economy and society, the number of cars in the world will continue to grow rapidly, and the stock of waste tires has reached 3 billion. Among them, more than 100 million tires are scrapped in my country each year, accounting for one-third of the world. By 2020, China is expected to produce 20 million tons of waste tires. A large number of waste tires not only waste precious rubber resources, but also accumulate and occupy land, forming black pollution that is more difficult to deal with than plastic pollution (white pollution). The rational disposal of waste tires has become an urgent global environmental issue.

[0003] Waste tires are reusable resources. The recycling and comprehensive utilization level of waste tires is one of the important indicators of a country's economic development. The treatment of waste tires must comply with the principles of resource utilization, harmlessness and reduction of waste treatment. At present, the comprehensive utilization of waste tires mainly includes retreading, recycled rubber and rubber powder, thermal energy utilization, pyrolysis, etc.

[0004] At present, the tire retreading rate in my country is only 26:1, especially the retreading rate of passenger car tires is almost zero. Recycled rubber refers to waste vulcanized rubber that has been subjected to physical and chemical processes such as crushing, heating, and mechanical treatment, so that it changes from an elastic state to a plastic and sticky rubber that can be re-vulcanized. Passenger car tires, which account for nearly half of the waste tire production, have extremely low value for producing recycled rubber and rubber powder. Practice has shown that the use of waste rubber in the production of recycled rubber not only consumes a lot of energy in the production process, but also the various performance indicators of the vulcanized rubber in the recycled rubber are not as good as those of the waste tires before treatment. At the same time, the high-temperature and high-pressure dynamic desulfurization process in the production process also has the disadvantages of high energy consumption, low added value, and prominent secondary pollution problems.

[0005] Tires have a high calorific value (2937MJ / kg), and the calorific value per kilogram is 69% higher than wood, 10% higher than bituminous coal, and 4% higher than coke. Therefore, the direct use of heat energy as fuel (cement kilns, industrial boilers, power generation boilers, etc.) is an important method for the comprehensive treatment and utilization of waste tires. However, during the aerobic combustion process, highly toxic carcinogens such as dioxins are easily produced, so the equipment cost is high and complex flue gas treatment equipment must be configured in order to meet the environmental protection requirements of emission.

[0006] The pyrolysis of waste tires refers to the process in which the polymer with unsaturated bonds in the main chain of rubber is broken under anaerobic or anoxic conditions and at appropriate temperatures. The products are mainly monomers, dimers and fragments, and the products are repolymerized into various olefins, thereby removing volatile substances and forming solid carbon. The products are mainly solids mainly composed of pyrolysis oil and crude carbon black and non-condensable combustible gases. According to the pyrolysis temperature, it can be divided into high-temperature pyrolysis (>1000℃), medium-temperature pyrolysis (600-700℃) and low-temperature pyrolysis (<600℃). The advantage of the pyrolysis process is that since it is anoxic decomposition, it is conducive to reducing secondary pollution to the atmospheric environment and can control the generation and pollution of dioxins; most of the harmful components such as sulfur and heavy metals in the waste are fixed in solid black carbon and effectively recycled.

[0007] At present, the pyrolysis of waste tires mainly includes three types of processes, namely thermal cracking, catalytic degradation and microwave depolymerization. The thermal cracking process includes atmospheric pressure inert gas pyrolysis (such as "a continuous cracking process and equipment" disclosed in the patent document with publication number CN104910948A, "a continuous steam cracking equipment label and a cracking furnace for use therewith" disclosed in the patent document with publication number CN101555413A), vacuum pyrolysis and molten salt pyrolysis: (1) atmospheric pressure inert gas pyrolysis: heating the waste rubber to 500°C in an inert gas to obtain 35% (the mass fraction of the waste rubber, the same below) of solid residue (mainly crude carbon black, which contains 0.2 mass fraction of sulfur and 0.10-0.15 mass fraction of ash), 55% of oil (containing 0.51 mass fraction of aromatic oil and 0.33 mass fraction of crude naphtha) and 3% of gas. (2) Vacuum pyrolysis: Vacuum pyrolysis is decomposition under reduced pressure and low temperature conditions. Under a total pressure of 2-20 kPa and a temperature of 510°C, waste rubber can be cracked to obtain 50% oil products, 25% carbon black, 9% steel, 5% fiber and 11% gas; under a total pressure of 0.3 kPa and a temperature of 420°C, 55% oil products, 35% solids and 10% gas can be obtained. (3) Molten salt pyrolysis: Tire fragments are immersed in a low eutectic mixture of lithium chloride / potassium chloride and heated to 500°C to produce 47% oil, 45% solid residue and 12% gas.

[0008] At present, the main types of thermal cracking equipment are moving beds, fluidized beds, fixed beds and rotary kilns. The waste tire thermal cracking equipment must not only meet its temperature reaction conditions, but also fully consider the complexity of the feed, the sealing of the cracking equipment and the supporting facilities to meet the strict environmental protection requirements. At present, all cracking processes are to put the material to be cracked into the cracker for cracking. The main target product is liquid and solid products, which is easy to cause coking inside the equipment, and multi-stage condensation separation and filtration of pyrolysis products. Therefore, the extremely complex pyrolysis equipment and process conditions lead to the main products of low-temperature pyrolysis of waste tires - pyrolysis oil, crude carbon black, which are mainly solid components. The quality is difficult to guarantee and cannot be applied on a large scale industrially. From the perspective of the benefit goals of the three major factors of environmental protection, society and economy, there are still obvious deficiencies.

[0009] The patent document with the publication number CN105925293A discloses a "self-dusting waste tire pyrolysis and cracking system" which proposes a self-dusting waste tire pyrolysis and cracking system based on heat storage radiant tube heating. The system can perform two operations, pyrolysis and cracking. The oil and gas produced by pyrolysis enter the particle bed dust removal device. After filtering and dust removal, the clean oil and gas enter the cracking chamber, which reduces the dust removal pressure of the subsequent process and cracks the large molecular tar molecules into small molecular gaseous hydrocarbons. The reactor can produce a large amount of cracking gas, thereby avoiding the problem of difficult utilization of produced pyrolysis oil. However, in this technology, the pyrolysis chamber and the cracking chamber are connected, and the pyrolysis and cracking processes are both carried out by heating the heat storage radiant tube. In this way, the products of pyrolysis and cracking are easy to coke on the wall of the heat storage radiant tube and affect the reaction efficiency. At the same time, the solid products formed by components such as carbon black in the tire are still difficult to utilize. Summary of the invention

[0010] The purpose of the present invention is to provide a continuous, efficient and green waste tire autonomous superheated steam energy conversion system, which aims to solve the problems of high energy consumption, low cracking efficiency, difficulty in comprehensive utilization of cracking products and failure to meet environmental protection requirements, and low controllability of the cracking process in the cracking process of tire rubber.

[0011] In order to achieve the above technical purpose, the technical solution of the present invention is:

[0012] A continuous, efficient and green waste tire autonomous superheated steam energy conversion system, comprising:

[0013] - A pyrolysis system, wherein the pyrolysis system comprises one or more pyrolysis devices connected in sequence (i.e., the pyrolysis outlet of the previous pyrolysis device is connected to the pyrolysis feed port of the next pyrolysis device). For example, the pyrolysis system may include only one pyrolysis device, in which case the temperature in the pyrolysis device is 400°C, wherein the temperature at 250°C is mainly a heating process, and the pyrolysis reaction is carried out at a temperature of 250°C to 400°C. For another example, the pyrolysis system may include two pyrolysis devices, in which case the temperatures in the pyrolysis devices are 250°C and 400°C, respectively, so as to achieve a pyrolysis reaction at a temperature of 250°C to 400°C.

[0014] The pyrolysis device includes a pyrolysis feed port, a pyrolysis discharge port, a pyrolysis superheated steam inlet, a pyrolysis gas outlet and a pyrolysis heating device. A pyrolysis conveying device is provided in the pyrolysis device, and the pyrolysis conveying device conveys the material from the pyrolysis feed port to the pyrolysis discharge port. The pyrolysis superheated steam inlet is connected to the superheated steam pipeline, and the pyrolysis gas outlet is connected to the conversion gas pipeline. The pyrolysis heating device heats the pyrolysis device, and the pyrolysis heating device is preferably an electric heater; the material is conveyed to the gas conversion system after passing through one or more pyrolysis devices of the pyrolysis system.

[0015] - Gas conversion system, the gas conversion system includes a conversion device and a combustion chamber for heating the conversion device, the temperature in the conversion device is 800°C to 900°C (this temperature is to ensure that the conversion reaction between superheated steam and pyrolysis products proceeds), the conversion device includes a conversion feed port, a conversion discharge port and a conversion superheated steam inlet, and the material transported by the pyrolysis system is transported to the conversion feed port. A conversion conveying device is provided in the conversion device, and the conversion conveying device transports the material from the conversion feed port to the conversion discharge port. The conversion superheated steam inlet is connected to the superheated steam pipeline.

[0016] - A superheated steam generator, which generates superheated steam, which is delivered to a superheated steam pipeline.

[0017] The pyrolysis system collects the light-component combustible gases such as methane generated by the pyrolysis of waste tires into the conversion gas pipeline, and the liquid-solid mixture of carbon black and high-boiling-point, large-molecule heavy components in the tire waste will be transferred to the gas conversion system to undergo a conversion reaction with high-temperature steam under medium-high temperature conditions (800℃~900℃). At a temperature of 800℃~900℃, superheated steam is introduced into the liquid-solid mixture (high-boiling-point, large-molecule heavy components and carbon black, etc.) after the pyrolysis reaction to undergo a steam conversion reaction. The reaction formulas are as shown in formulas (1) and (2), generating hydrogen-rich combustible gas and performing separation and purification treatment.

[0018] The conversion device of the gas conversion system converts the carbon black component in the pyrolyzed tire into water-gas conversion reaction with high-temperature water vapor (1), and the carbon black is converted into CO. The hydrogen H2 produced by the water-gasification reaction is recycled as a combustible gas:

[0019] C+H2O (g) =CO+H2 (1)

[0020] The conversion device of the gas conversion system further thermally cracks the high-boiling point and large molecular weight components in the pyrolyzed tire through chain scission and dehydrogenation reactions. At the same time, the generated hydrocarbons such as methane react with water vapor through reforming reactions to generate hydrogen-rich combustible gas:

[0021] C x H y +xH2O (g) =xCO+(x+y / 2)H2 (2)

[0022] Preferably, the pyrolysis conveying device and the conversion conveying device are both screw conveyors.

[0023] In order to further utilize the small amount of solid products that have not been completely converted, the conversion discharge port of the conversion device is connected to a feeding device, and the feeding device includes a feeding inlet and a feeding outlet, and the conversion discharge port is connected to the feeding inlet; a feeding conveying device is arranged inside the feeding device, and the feeding conveying device conveys the material from the feeding inlet to the feeding outlet; the feeding outlet is arranged in the combustion chamber, and the material at the feeding outlet is burned in the combustion chamber.

[0024] In order to utilize the gas generated by the conversion, the conversion gas pipeline is connected to a conversion gas branch, and the conversion gas branch is connected to the combustion chamber to provide combustion gas for the combustion chamber.

[0025] The combustible gas conversion efficiency of waste tires is controlled by tire thermal cracking, the endothermic gas conversion reaction of the thermal cracking products and water vapor. The tire waste must be at a very high gas conversion temperature and sufficient reaction time to achieve the complete combustible energy gas conversion. At this time, the large-scale and complex whole system device will undoubtedly seriously hinder its application and promotion. In order to make full use of a small amount of tire waste residue that is not completely gasified, a combustion chamber outlet is provided below the combustion chamber, and a discharging device is provided below the combustion chamber outlet. The discharging device includes a discharging inlet and a discharging outlet. The discharging inlet is connected to the combustion chamber outlet. A discharging conveying device is provided in the discharging device. The discharging conveying device conveys the material from the discharging inlet to the discharging outlet. Specifically, the discharging conveying device is preferably a screw conveyor.

[0026] In the above description, the materials in different devices only refer to the specific materials therein.

[0027] In summary, the present invention converts waste tire materials into clean combustible energy gases such as hydrogen and methane through pyrolysis and conversion reaction with high-temperature water vapor under medium and high temperature conditions (800°C to 900°C) through two subsystems of pyrolysis and gas conversion, thereby realizing energy conversion and clean and efficient utilization of waste tires, and solving the problems of high energy consumption, low cracking efficiency, difficulty in comprehensive utilization of cracking products and failure to meet environmental protection requirements, and low controllability of the cracking process in the cracking process of waste tire rubber.

[0028] The technical advantages and beneficial effects of the present invention are as follows: (1) The waste tire heat is mainly in the heating stage before 250°C. The traditional waste tire thermal cracking method must be heated to at least 550°C to 600°C to complete the cracking. The pyrolysis temperature in the present invention is 250°C to 400°C. The pyrolysis process in this temperature range mainly produces the escape of light component combustible gases such as methane, which greatly reduces the generation of products such as highly carcinogenic polycyclic aromatic hydrocarbons in the complete cracking chamber, so that high-boiling point, large-molecule heavy components and carbon black in the tire waste will participate in the subsequent aqueous gas conversion reaction; (2) The Gibbs free energy of the reaction from carbon to water vapor to generate carbon monoxide and hydrogen Δ r G m 0 =-146.34T+135248J / mol, it can be seen that the reaction can only proceed at a temperature exceeding 924K (651°C), and the higher the temperature, the easier it is to proceed. On the other hand, the chain breaking and dehydrogenation reactions of high-boiling point, large molecular weight components, and the steam reforming reactions of hydrocarbons such as methane are all strongly endothermic reactions. The steam conversion reaction temperature proposed in the present invention is 800°C to 900°C, which can ensure the rapid progress of the conversion reaction. At the same time, the reaction fuel consumption cost and the reactor manufacturing cost will not be significantly increased due to the use of too high a temperature. (3) The thermal conductivity of waste tire materials is very low, and it takes a long time to heat up. The technology of the present invention uses superheated water vapor with good heating effect (high specific heat capacity and large diffusion rate) as the heat conduction medium for pyrolysis and conversion reactions, thereby increasing the reaction speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is the front view of the system of the present invention.

[0030] Figure 2 It is the right side view of the system of the present invention. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0032] like Figure 1 , 2 As shown, a continuous, efficient and green waste tire autonomous superheated steam energy conversion system comprises:

[0033] - pyrolysis system, the pyrolysis system comprises two first pyrolysis devices 2 and second pyrolysis devices 6 connected in sequence (the present invention does not limit the number of pyrolysis devices), the pyrolysis devices (first pyrolysis device 2, second pyrolysis device 6) comprise a pyrolysis feed port, a pyrolysis discharge port, a pyrolysis superheated steam inlet, a pyrolysis gas outlet and a pyrolysis heating device, the pyrolysis feed port of the first pyrolysis device 2 is provided with a measuring bucket 1 for feeding (inputting the crushed waste tire fragments). The pyrolysis discharge port of the first pyrolysis device 2 is connected to the pyrolysis feed port of the second pyrolysis device 6.

[0034] The pyrolysis conveying devices 5 and 7 are provided in the pyrolysis devices (the first pyrolysis device 2 and the second pyrolysis device 6). The pyrolysis conveying devices 5 and 7 are specifically screw conveyors. The pyrolysis conveying devices 5 and 7 convey the materials from the pyrolysis feed port to the pyrolysis discharge port.

[0035] The pyrolysis superheated steam inlet is connected to the superheated steam pipeline 4, and superheated steam is introduced into the pyrolysis device (the first pyrolysis device 2, the second pyrolysis device 6). The introduced superheated steam can exhaust the air in the pyrolysis device while heating the waste tire material, thereby achieving an oxygen-free atmosphere.

[0036] The pyrolysis gas outlet is connected to the conversion gas pipeline 3 for collecting the converted gas. The combustible gas introduced into the conversion gas pipeline 3 is separated and purified, and then used as clean energy gas for power generation, combustion and heating, etc.

[0037] The pyrolysis heating device is a pyrolysis device for heating. The pyrolysis heating device uses an electric heater. The pyrolysis heating device heats the material in the first pyrolysis device 2 to 250°C, and the pyrolysis heating device heats the material in the second pyrolysis device 6 to 400°C. The pyrolysis reaction causes the light component combustible gas such as methane generated by the pyrolysis of the waste tire to flow to the conversion gas pipeline for collection, and the liquid-solid mixture such as carbon black and high-boiling-point, large-molecule heavy components in the tire waste will then undergo a conversion reaction with high-temperature water vapor under medium-high temperature conditions (800°C to 900°C).

[0038] - Gas conversion system, the gas conversion system includes a conversion device 8 and a combustion chamber 12 for heating the conversion device 8. The conversion device 8 includes a conversion feed port, a conversion discharge port and a conversion superheated steam inlet. In order to further utilize a small amount of unconverted solid products, the conversion discharge port of the conversion device 8 is connected to a feed device 10, the feed device 10 includes a feed inlet and a feed outlet, and the conversion discharge port is connected to the feed inlet; a feed conveying device is arranged inside the feed device 10, and the feed conveying device conveys the material from the feed inlet to the feed outlet; the feed outlet is arranged in the combustion chamber 12, and the material at the feed outlet is burned in the combustion chamber 12 (the nozzle 13 can be used for combustion).

[0039] The material from the pyrolysis outlet of the second pyrolysis device 6 is transported to the conversion feed port. A conversion conveying device 9 is provided in the conversion device 8. The conversion conveying device 9 is a screw conveyor. The conversion conveying device 9 transports the material from the conversion feed port to the conversion outlet.

[0040] The conversion superheated steam inlet is connected to the superheated steam pipeline 4, and the high boiling point, large molecular weight components and carbon black after pyrolysis are converted with high temperature steam (superheated steam) in the conversion device 8 under medium and high temperature conditions (800°C to 900°C). This temperature can ensure the rapid progress of the conversion reaction, and the reaction fuel consumption cost and reactor manufacturing cost will not be significantly increased due to the excessively high use temperature.

[0041] In order to utilize the gas generated by the conversion, the conversion gas pipeline 3 is connected to a conversion gas branch, and the conversion gas branch is connected to the combustion chamber 12 to provide combustion gas to the combustion chamber 12, so that the conversion reaction can be carried out autonomously without relying on external energy.

[0042] A combustion chamber outlet is arranged below the combustion chamber 12, and a discharging device 11 is arranged below the combustion chamber outlet. The discharging device 11 includes a discharging inlet and a discharging outlet. The discharging inlet is connected to the combustion chamber outlet. A discharging conveying device is arranged in the discharging device 11. The discharging conveying device is a screw conveyor. The discharging conveying device 11 conveys the material (residue) from the discharging inlet to the discharging outlet to discharge the combustion residue.

[0043] - A superheated steam generator 14 , wherein the superheated steam generator 14 generates superheated steam, namely, superheated steam for participating in the aqueous gas conversion reaction, and the superheated steam is transported to the superheated steam pipeline 4 .

[0044] Workflow:

[0045] The waste tire fragments (materials) are added into the first pyrolysis device 2 through the measuring bucket 1, and superheated steam is introduced at the same time. The material is heated to 250°C in the first pyrolysis device 2, and then enters the second pyrolysis device 6, and superheated steam is introduced at the same time for oxygen removal treatment. The material is pyrolyzed in the second pyrolysis device 6 (400°C). The material is pyrolyzed into light component combustible gases such as methane through the first pyrolysis device 2 and the second pyrolysis device 6, and flows to the conversion gas pipeline for collection, while the liquid-solid mixture such as carbon black and high-boiling-point, large-molecule heavy components in the tire waste will participate in the subsequent conversion reaction with high-temperature water vapor.

[0046] The liquid-solid mixture obtained by pyrolysis is transported to the conversion device 8 through the pyrolysis outlet of the second pyrolysis device 6. Superheated steam is introduced into the conversion device 8, and the conversion reaction with high-temperature water vapor (superheated steam) at a temperature of 800°C to 900°C is carried out to convert it into a clean, combustible energy gas rich in hydrogen. The converted gas flows to the first pyrolysis device 2 and the second pyrolysis device 6 in the conversion device 8, and finally flows to the conversion gas pipeline 3, and is separated and purified to achieve the combustible gas energy conversion and clean and efficient utilization of waste tires.

[0047] The above embodiments do not limit the present invention in any way, and any technical solutions obtained by equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A continuous, efficient and green waste tire autonomous superheated steam energy conversion system, characterized in that include: - a pyrolysis system, wherein the pyrolysis system comprises one or more pyrolysis devices connected in sequence, wherein the pyrolysis device comprises a pyrolysis feed port, a pyrolysis discharge port, a pyrolysis superheated steam inlet, a pyrolysis gas outlet and a pyrolysis heating device, wherein a pyrolysis conveying device is arranged in the pyrolysis device, and the pyrolysis conveying device conveys the material from the pyrolysis feed port to the pyrolysis discharge port; the pyrolysis superheated steam inlet is connected to a superheated steam pipeline, and the superheated steam introduced discharges the air in the pyrolysis device while heating the waste tire material, and the pyrolysis gas outlet is connected to a conversion gas pipeline; the pyrolysis heating device heats the pyrolysis device; the material is conveyed to the gas conversion system after passing through one or more pyrolysis devices of the pyrolysis system, and the pyrolysis temperature in the pyrolysis device is 250°C to 400°C; - a gas conversion system, the gas conversion system comprising a conversion device and a combustion chamber for heating the conversion device, the conversion device comprising a conversion feed port, a conversion discharge port and a conversion superheated steam inlet, the material transported by the pyrolysis system is transported to the conversion feed port; a conversion conveying device is arranged in the conversion device, the conversion conveying device transports the material from the conversion feed port to the conversion discharge port; the conversion superheated steam inlet is connected to the superheated steam pipeline, superheated steam is introduced to carry out a steam conversion reaction, and the temperature in the conversion device is 800°C to 900°C; - A superheated steam generator, which generates superheated steam, which is delivered to a superheated steam pipeline.

2. The continuous, efficient and green waste tire autonomous superheated steam energy conversion system according to claim 1 is characterized by: The pyrolysis system comprises a pyrolysis device, and the temperature inside the pyrolysis device is 400°C.

3. The continuous, efficient and green waste tire autonomous superheated steam energy conversion system according to claim 1 is characterized by: The pyrolysis system comprises two pyrolysis devices, and the temperatures in the pyrolysis devices are 250° C. and 400° C. respectively.

4. The continuous, efficient and green waste tire autonomous superheated steam energy conversion system according to claim 1 is characterized by: The pyrolysis conveying device and the conversion conveying device are both screw conveyors.

5. The continuous, efficient and green waste tire autonomous superheated steam energy conversion system according to claim 1 is characterized by: The pyrolysis heating device is an electric heater.

6. The continuous, efficient and green waste tire autonomous superheated steam energy conversion system according to claim 1 is characterized by: The conversion discharge port of the conversion device is connected to a feeding device, which includes a feeding inlet and a feeding outlet, and the conversion discharge port is connected to the feeding inlet; a feeding conveying device is arranged inside the feeding device, and the feeding conveying device conveys the material from the feeding inlet to the feeding outlet; the feeding outlet is arranged in the combustion chamber, and the material at the feeding outlet is burned in the combustion chamber.

7. The continuous, efficient and green waste tire autonomous superheated steam energy conversion system according to claim 1 is characterized by: The conversion gas pipeline is connected to a conversion gas branch, and the conversion gas branch is connected to the combustion chamber to provide combustion gas for the combustion chamber.

8. The continuous, efficient and green waste tire autonomous superheated steam energy conversion system according to claim 1 is characterized by: A combustion chamber outlet is arranged below the combustion chamber, and a discharging device is arranged below the combustion chamber outlet. The discharging device includes a discharging inlet and a discharging outlet. The discharging inlet is connected to the combustion chamber outlet. A discharging conveying device is arranged in the discharging device, and the discharging conveying device conveys the material from the discharging inlet to the discharging outlet.

9. The continuous, efficient and green waste tire autonomous superheated steam energy conversion system according to claim 8 is characterized by: The discharging and conveying device is a screw conveyor.

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