Oil gas post-treatment process and system after tire pyrolysis

Abstract

The application discloses a kind of oil gas aftertreatment processes after tire cracking, condense after the purification of cracked oil gas, obtain finished oil and non-condensable gas;Finished oil flows through intermediate oil tank and enters oil storage tank, collect the breathing exhaust gas of oil storage tank and the loading exhaust gas generated when loading finished oil in oil storage tank, transport breathing exhaust gas and loading exhaust gas to waste gas burner, burn breathing exhaust gas and loading exhaust gas to heat cracking furnace;Non-condensable gas flows through gas storage tank, gas package and is transported to gas burner, and combustion non-condensable gas to heat cracking furnace.The application also discloses an oil gas aftertreatment system after tire cracking for realizing the above process.The application collects breathing exhaust gas, loading exhaust gas and non-condensable gas, and burns to heat cracking furnace, which helps to reduce the cost of tire cracking, improve energy utilization, and reduce environmental pollution.

Description

Technical Field

[0001] This invention relates to a process and system for the post-treatment of oil and gas after tire pyrolysis. Background Technology

[0002] The tire pyrolysis process generally includes: crushing waste tires into tire blocks required for pyrolysis, feeding the tire blocks continuously and quantitatively into the pyrolysis furnace through a feeding system, obtaining pyrolysis oil and gas through pyrolysis and cracking reaction, and cooling the pyrolysis oil and gas through an oil separator cooler to obtain fuel oil and a small amount of non-condensable combustible gas. Among them, the fuel oil is directly used for sale, and the non-condensable combustible gas is purified and used as fuel for the heating system.

[0003] CN118772909A discloses a waste tire recycling process. Figure 1 The attached figures are from the specification of this patent. Figure 1 As shown, existing cracked oil and gas are cooled and then used to store fuel oil in fuel oil storage tanks. During the storage process, the gas escaping from the fuel oil storage tanks is directly emitted into the air as waste gas, which not only pollutes the air but also wastes energy. Summary of the Invention

[0004] In view of this, one object of the present invention is to provide an oil and gas aftertreatment process for tire pyrolysis that can make full use of energy and avoid air pollution.

[0005] Another object of the present invention is to provide an oil and gas aftertreatment system for tire pyrolysis that implements the above-described process.

[0006] On one hand, the present invention provides a post-treatment process for oil and gas after tire pyrolysis, wherein the purified pyrolysis oil and gas are condensed to obtain finished oil and non-condensable gas; the finished oil flows through an intermediate oil tank into an oil storage tank, the breathing exhaust gas of the oil storage tank and the loading exhaust gas generated when loading the finished oil in the oil storage tank are collected, the breathing exhaust gas and the loading exhaust gas are transported to an exhaust gas burner, and the breathing exhaust gas and the loading exhaust gas are burned to heat the pyrolysis furnace; the non-condensable gas flows through a gas storage tank and a gas distribution manifold to a gas burner, and the non-condensable gas is burned to heat the pyrolysis furnace.

[0007] In this invention, the exhaust gas includes small-scale exhaust gas and large-scale exhaust gas. Small-scale exhaust gas is the exhaust gas discharged due to the expansion of oil vapor in the storage tank caused by diurnal temperature changes. Large-scale exhaust gas is the exhaust gas discharged due to changes in the liquid level in the storage tank during oil receiving and dispensing. Loading exhaust gas is the exhaust gas squeezed out of the tank truck when the finished oil from the storage tank is loaded into the tank truck.

[0008] This invention collects respiratory exhaust gas, loading exhaust gas, and non-condensable gases, and burns them to provide heat for the pyrolysis furnace, which helps to reduce the cost of tire pyrolysis, improve energy utilization, and reduce environmental pollution.

[0009] The post-treatment process for oil and gas after tire pyrolysis according to the present invention preferably further includes the following steps: conveying the pyrolysis oil and gas generated from tire pyrolysis to a heavy oil settler, removing coke powder, residual oil and some water by gravity settling to obtain the purified pyrolysis oil and gas; conveying the purified pyrolysis oil and gas to a condenser for condensation to obtain the finished oil and the non-condensable gas.

[0010] Preferably, the condenser includes a first condenser and a second condenser. This secondary condensation helps reduce coking and clogging of the spray gun, and improves energy efficiency.

[0011] According to the tire pyrolysis oil and gas aftertreatment process of the present invention, preferably, the non-condensable gas flows with the finished oil through the intermediate oil tank and the oil storage tank, and is then transported to the gas storage tank. This allows for secondary cooling and deep sedimentation for oil and water removal of the non-condensable gas, improving gas purity and making subsequent combustion more stable and the system safer. Furthermore, the unified collection of non-condensable gas, breathing gas, and loading exhaust gas at the oil storage tank simplifies the pipeline structure and enables centralized and unified treatment of multiple exhaust sources.

[0012] The post-treatment process for oil and gas after tire pyrolysis according to the present invention preferably further includes: collecting the exhaust gas, the loading exhaust gas, and the tail gas generated from the combustion of the non-condensable gases, and spraying the tail gas for dust removal. This can prevent environmental pollution.

[0013] On the other hand, the present invention provides an oil and gas aftertreatment system for tire pyrolysis to implement the above-mentioned process, comprising an exhaust gas treatment system and a non-condensable gas treatment system, wherein: The exhaust gas treatment system includes a breathing exhaust gas collection device, a loading exhaust gas collection device, an exhaust gas conveying pipeline, and an exhaust gas burner. The breathing exhaust gas collection device is used to collect the breathing exhaust gas from the oil storage tank. The loading exhaust gas collection device is used to collect the loading exhaust gas generated when loading the finished oil from the oil storage tank onto trucks. The exhaust gas conveying pipeline is used to convey the breathing exhaust gas and the loading exhaust gas to the exhaust gas burner. The exhaust gas burner is used to burn the breathing exhaust gas and the loading exhaust gas, thereby heating the pyrolysis furnace. The non-condensable gas treatment system includes a gas storage tank, a gas distribution manifold, a gas burner, and a non-condensable gas delivery pipeline. The non-condensable gas delivery pipeline is connected in sequence to the gas storage tank, the gas distribution manifold, and the gas burner. The gas storage tank is used to store the non-condensable gas and separate and settle the water and condensate entrained in the non-condensable gas. The gas distribution manifold is used to evenly distribute the non-condensable gas. The gas burner is used to burn the non-condensable gas, thereby heating the pyrolysis furnace.

[0014] According to the tire pyrolysis oil and gas aftertreatment system of the present invention, preferably, the breathing exhaust gas collection device includes a breathing valve, a gas collecting branch pipe, a one-way valve, a breathing exhaust gas main pipe and a flame arrester connected in sequence, wherein: the breathing valve is located at the top of the oil storage tank; the gas collecting branch pipe connects the breathing valve and the breathing exhaust gas main pipe, and the gas collecting branch pipe is used to transport the breathing exhaust gas from each of the oil storage tanks to the breathing exhaust gas main pipe; the one-way valve is used to prevent backflow of flue gas; the breathing exhaust gas main pipe is used to collect the breathing exhaust gas and transport the breathing exhaust gas to the exhaust gas delivery pipeline; the flame arrester is located between the breathing exhaust gas main pipe and the exhaust gas burner for fire prevention.

[0015] According to the tire pyrolysis oil and gas aftertreatment system of the present invention, preferably, the loading exhaust gas collection device includes a sealed loading arm, a gas phase collection hose, a loading arm end flame arrester, oil and gas branch pipes, an oil and gas main pipe, an induced draft fan, and a main pipe end flame arrester connected in sequence, wherein: the sealed loading arm is used to load the finished oil in the storage tank into the tank truck and collect the loading exhaust gas squeezed out in the tank truck; the gas phase collection hose is configured to rise and fall with the sealed loading arm to prevent air leakage; the loading arm end flame arrester is used for fire prevention; the oil and gas branch pipes are used to transport the loading exhaust gas collected by each sealed loading arm to the oil and gas main pipe; the oil and gas main pipe is used to collect the loading exhaust gas and uniformly transport the loading exhaust gas to the exhaust gas conveying pipeline; the induced draft fan is used to provide negative pressure to stably draw the loading exhaust gas to the exhaust gas conveying pipeline; the main pipe end flame arrester is disposed between the oil and gas main pipe and the exhaust gas burner for fire prevention.

[0016] According to the tire pyrolysis oil and gas aftertreatment system of the present invention, preferably, the gas burner includes a pressure blower and a gas spray gun; the air outlet of the pressure blower is connected to the air duct of the pyrolysis furnace for conveying air into the air duct, the air duct is provided with multiple air supply pipes for conveying air to the gas spray gun; the gas spray gun is disposed on one side of the air duct; the gas inlet of the gas spray gun is connected to the non-condensable gas conveying pipeline, and the nozzle of the gas spray gun extends into the heat-insulating furnace hood of the pyrolysis furnace; multiple gas spray guns are provided, and the gas spray guns are used to burn the non-condensable gas.

[0017] According to the tire pyrolysis after-treatment system of the present invention, preferably, the exhaust gas burner includes an exhaust gas spray gun, the exhaust gas inlet of the exhaust gas spray gun is connected to the exhaust gas conveying pipeline, and the nozzle of the exhaust gas spray gun extends into the heat preservation furnace hood; the exhaust gas spray gun is disposed on one side of the pyrolysis furnace and is used to burn the breathing exhaust gas and the loading exhaust gas.

[0018] The tire pyrolysis after-treatment system according to the present invention preferably further includes an exhaust gas treatment system, the exhaust gas treatment system including an exhaust gas delivery pipe and a spray dust removal device; one end of the exhaust gas delivery pipe is connected to the exhaust gas outlet of the heat preservation furnace hood, and the other end is connected to the spray dust removal device; the spray dust removal device is used to remove dust from the non-condensable gas, the breathing exhaust gas and the exhaust gas generated by the combustion of the loading exhaust gas.

[0019] The tire pyrolysis post-treatment process of this invention collects breathing gases, loading exhaust gases, and non-condensable gases, combusts them to heat the pyrolysis furnace, and purifies the combustion exhaust gases, helping to reduce the cost of tire pyrolysis, improve energy utilization, and reduce environmental pollution. Furthermore, this invention uses a method where non-condensable gases enter an intermediate oil tank along with the finished oil. This allows for secondary cooling and deep sedimentation for degreasing and dehydration of the non-condensable gases, improving gas purity and making subsequent combustion more stable and the system safer. On the other hand, the unified collection of non-condensable gases, breathing gases, and loading exhaust gases at the storage tank simplifies the pipeline structure and enables centralized and unified treatment of multiple sources of exhaust gases. The tire pyrolysis post-treatment system of this invention can implement the tire pyrolysis post-treatment process of this invention and has a simple structure. Attached Figure Description

[0020] Figure 1 This is a process flow diagram of a waste tire recycling process in the existing technology.

[0021] Figure 2 This is a schematic diagram of the structure of an oil and gas aftertreatment system for tire pyrolysis according to Embodiment 3 of the present invention.

[0022] The attached figures are labeled as follows: 1-Exhaust gas treatment system; 11-Breathing exhaust gas collection device; 111-Breathing valve; 112-Gas collection branch pipe; 113-One-way valve; 114-Breathing exhaust gas main pipe; 115-Flame arrester; 12-Loading exhaust gas collection device; 121-Sealed loading arm; 122-Gas phase collection hose; 123-Flame arrester at the loading arm end; 124-Oil and gas branch pipe; 125-Oil and gas main pipe; 126-Exhaust fan; 127-Flame arrester at the end of the main pipe; 13-Exhaust gas delivery pipeline; 131-Safety water seal; 14-Exhaust gas burner; 2-Non-condensable gas handling system; 21-Gas storage tank; 22-Gas distribution manifold; 23-Gas burner; 231-Pressure blower; 232-Gas spray gun; 24-Non-condensable gas delivery pipeline; 3-Exhaust gas treatment system; 31-Exhaust gas conveying pipe; 32-Spray dust removal device; 4-Oil storage tank; 5-Insulated furnace cover; 51-Air duct. Detailed Implementation

[0023] The present invention will be further described below with reference to specific embodiments, but the scope of protection of the present invention is not limited thereto. Example 1

[0024] This embodiment provides a post-processing technology for oil and gas after tire pyrolysis. The pyrolyzed oil and gas generated after tire pyrolysis is transported to a heavy oil settling tank, where coke powder, residual oil, and some water are removed by gravity settling, yielding sludge heavy oil and purified pyrolyzed oil and gas. The sludge heavy oil can be recycled and reused, for example, for heating the pyrolysis furnace. The purified pyrolyzed oil and gas is then transported to a condenser for condensation, yielding finished oil and non-condensable gases.

[0025] The refined oil collects at the bottom of the condenser and flows out into an intermediate oil tank for settling and separation before being transported to a storage tank. The breathing gas from the storage tank and the loading exhaust gas generated during the loading of the refined oil from the storage tank are collected and sent to an exhaust gas burner for combustion, thereby heating the pyrolysis furnace. The intermediate oil tank helps improve the quality of the liquid oil.

[0026] Non-condensable gases are drawn off separately from the top of the condenser, flow through a gas storage tank and a gas distributor, and are then delivered to the gas burner. The combustion of the non-condensable gases heats the pyrolysis furnace. The gas storage tank stores the non-condensable gases and separates and settles any entrained water and condensate, helping to maintain pressure stability and ensure complete combustion. The gas distributor evenly distributes the non-condensable gases to the gas burner, improving energy efficiency.

[0027] Collect exhaust gas from breathing, loading, and combustion of non-condensable gases, and spray the exhaust gas for dust removal.

[0028] The finished oil obtained by the post-processing of oil and gas after tire pyrolysis in this embodiment is of high quality. It collects breathing exhaust gas, loading exhaust gas and non-condensable gases, and burns them to provide heat for the pyrolysis furnace. It also purifies the combustion exhaust gas, which helps to reduce the cost of tire pyrolysis, improve energy utilization, and reduce environmental pollution. Example 2

[0029] Except for the following steps, the rest are the same as in Example 1.

[0030] In this embodiment, the non-condensable gas flows with the finished oil through an intermediate oil tank and a storage tank, and is then transported to a gas storage tank. After entering the intermediate oil tank, the gas-liquid-water mixture settles and separates into layers, forming a non-condensable gas layer, a fuel oil layer, and a water layer from top to bottom. The fuel oil flows continuously by gravity from the outlet in the lower middle part of the intermediate oil tank to the storage tank; the water settles and accumulates at the bottom of the intermediate oil tank and is periodically discharged through a bottom drain valve; the non-condensable gas enters the upper space of the storage tank through a gas phase balance pipe at the top of the intermediate oil tank. Finally, the non-condensable gas is transported to the gas storage tank, which can be achieved using a vacuum pump.

[0031] In this embodiment, non-condensable gases are introduced into the intermediate oil tank along with the finished oil. On the one hand, this allows for secondary cooling and deep sedimentation to remove oil and water from the non-condensable gases, improving gas purity and making subsequent combustion more stable and the system safer. On the other hand, the collection of non-condensable gases, breathing exhaust gases, and loading exhaust gases is carried out uniformly at the oil storage tank, which simplifies the pipeline structure and enables centralized and unified treatment of multi-source exhaust gases. Example 3

[0032] Figure 2 This is a schematic diagram of the structure of an oil and gas aftertreatment system following tire pyrolysis, according to Embodiment 3 of the present invention. Figure 2 As shown, the tire pyrolysis oil and gas after-treatment system of this embodiment includes an exhaust gas treatment system 1 and a non-condensable gas treatment system 2. The system may also optionally be equipped with an exhaust gas treatment system 3.

[0033] The exhaust gas treatment system 1 is used to collect and reuse the exhaust gases generated during the storage and transportation of refined oil products. The exhaust gases include breathing exhaust gases and loading exhaust gases. The exhaust gas treatment system 1 includes a breathing exhaust gas collection device 11, a loading exhaust gas collection device 12, an exhaust gas conveying pipeline 13, and an exhaust gas burner 14.

[0034] In this embodiment, the exhaust gas collection device 11 is used to collect the exhaust gas from the oil storage tank. The exhaust gas collection device 11 includes a breather valve 111, a gas collecting branch pipe 112, a one-way valve 113, an exhaust gas main pipe 114, and a flame arrester 115 connected in sequence. Specifically, the breather valve 111 is located at the top of the oil storage tank 4. The breather valve 111 is used to balance the pressure inside the oil storage tank 4. The breather valve 111 includes a positive pressure channel and a negative pressure channel. When the pressure inside the tank is too low, outside air enters the oil storage tank 4 through the negative pressure channel; when the pressure inside the tank is too high, the finished oil in the oil storage tank 4 enters the gas collecting branch pipe 112 through the positive pressure channel. The gas collecting branch pipe 112 connects the breather valve 111 and the exhaust gas main pipe 114. The gas collecting branch pipe 112 can transport the exhaust gas from each oil storage tank 4 to the exhaust gas main pipe 114. The one-way valve 113 is located on the exhaust gas main pipe 114 and can prevent backflow of flue gas. The main exhaust pipe 114 collects the exhaust gas and delivers it to the exhaust gas delivery pipeline 13; the flame arrester 115 is installed between the main exhaust pipe 114 and the exhaust gas burner 14, specifically on the main exhaust pipe 114. The flame arrester 115 is used for fire prevention.

[0035] In this embodiment, the loading exhaust gas collection device 12 is used to collect loading exhaust gas. The loading exhaust gas collection device 12 includes a sealed loading arm 121, a gas phase collection hose 122, a loading arm end flame arrester 123, an oil / gas branch pipe 124, an oil / gas main pipe 125, an induced draft fan 126, and a main pipe end flame arrester 127 connected in sequence. Specifically: the sealed loading arm 121 loads the finished oil from the storage tank 4 into the tank truck and collects the loading exhaust gas squeezed out of the tank truck. One end of the gas phase collection hose 122 is connected to the gas phase pipe end interface of the sealed loading arm 121, and the other end is connected to the oil / gas branch pipe 124. The gas phase collection hose 122 can rise and fall with the sealed loading arm 121, thereby preventing gas leakage. The loading arm end flame arrester 123 is installed on the oil / gas branch pipe 124 for fire prevention. The branch oil / gas pipe 124 transports the loading exhaust gas collected by each sealed loading arm 121 to the main oil / gas pipe 125. The main oil / gas pipe 125 collects the loading exhaust gas and transports it uniformly to the exhaust gas delivery pipeline 13. An induced draft fan 126 is installed on the main oil / gas pipe 125 to provide negative pressure and stably draw the loading exhaust gas to the exhaust gas delivery pipeline 13. A flame arrester 127 at the end of the main pipe is installed between the main oil / gas pipe 125 and the exhaust gas burner 14, or can be installed on the main oil / gas pipe 125, to improve system safety.

[0036] In this embodiment, the exhaust gas delivery pipeline 13 is used to deliver breathing exhaust gas and loading exhaust gas to the exhaust gas burner 14. A safety water seal 131 is provided on the exhaust gas delivery pipeline 13. The safety water seal 131 is close to the gas burner 14 to prevent backfire of the flame and high-temperature flue gas, thereby further improving the safety of the system.

[0037] In this embodiment, the exhaust gas burner 14 is used to burn the breathing exhaust gas and the loading exhaust gas to heat the pyrolysis furnace. The exhaust gas burner 14 includes an exhaust gas spray gun, which is disposed on one side of the pyrolysis furnace. The exhaust gas inlet of the exhaust gas spray gun is connected to the exhaust gas delivery pipeline 13, and the nozzle of the exhaust gas spray gun extends into the heat-insulating furnace hood 5. It heats the pyrolysis furnace by burning the breathing exhaust gas and the loading exhaust gas.

[0038] The non-condensable gas treatment system 2 is used for the collection and reuse of non-condensable gases. The non-condensable gas treatment system 2 includes a gas storage tank 21, a gas distributor 22, a gas burner 23, and a non-condensable gas delivery pipeline 24. The non-condensable gas delivery pipeline 24 connects the gas storage tank 21, the gas distributor 22, and the gas burner 23 in sequence. The gas storage tank 21 stores the non-condensable gases and separates and settles water and condensate entrained in the non-condensable gases. The gas distributor 22 evenly distributes the non-condensable gases to the gas burner 23. The gas burner 23 burns the non-condensable gases, thereby heating the pyrolysis furnace. The gas burner 23 includes a pressure blower 231 and a gas nozzle 232. The outlet of the pressure blower 231 is connected to the air duct 51 outside the insulated furnace hood 5. The pressure blower 231 delivers air into the air duct 51, which is equipped with multiple air supply pipes that deliver air to the gas nozzle 232. A gas spray gun 232 is installed on one side of the air duct 51. Multiple gas spray guns 232 may be installed, for example, three. The gas inlet of the gas spray gun 232 is connected to the non-condensable gas delivery pipeline 24. The nozzle of the gas spray gun 232 extends into the heat-insulating furnace hood 5 of the pyrolysis furnace. The gas spray gun 232 burns the non-condensable gas, thereby heating the pyrolysis furnace.

[0039] The exhaust gas treatment system 3 includes an exhaust gas delivery pipe 31 and a spray dust removal device 32. One end of the exhaust gas delivery pipe 31 is connected to the exhaust gas outlet of the insulated furnace hood 5, and the other end is connected to the spray dust removal device 32. The spray dust removal device 32 is used to remove dust from the exhaust gas generated by the combustion of non-condensable gases, breathing exhaust gases, and loading exhaust gases.

[0040] It should be noted that the breather valve, sealed loading arm, air distribution manifold, flame arrester, safety water seal, and other devices involved in the oil and gas aftertreatment system for tire pyrolysis of the present invention are all conventional equipment in the field, and their specific structures will not be described in detail here.

[0041] This invention is not limited to the above-described embodiments. Any modifications, improvements, or substitutions that can be conceived by those skilled in the art without departing from the essential content of this invention fall within the scope of this invention.

Claims

1. A process for after-treatment of oil and gas from tire pyrolysis, characterized in that, The purified cracked oil and gas are condensed to obtain finished oil and non-condensable gas; The finished oil flows through the intermediate oil tank into the storage tank, and the breathing exhaust gas of the storage tank and the loading exhaust gas generated when loading the finished oil in the storage tank are collected. The breathing exhaust gas and the loading exhaust gas are transported to the exhaust gas burner to burn the breathing exhaust gas and the loading exhaust gas to heat the cracking furnace. The non-condensable gas flows through a gas storage tank and a gas distributor to a gas burner, where it is burned to heat the pyrolysis furnace.

2. The post-treatment process for oil and gas after tire pyrolysis according to claim 1, characterized in that, It also includes the following steps: The pyrolysis oil and gas generated from tire pyrolysis is transported to a heavy oil settler, where coke powder, residual oil and some water are removed by gravity settling to obtain the purified pyrolysis oil and gas. The purified cracked oil and gas are transported to a condenser for condensation to obtain the finished oil and the non-condensable gas.

3. The aftertreatment process for oil and gas from tire pyrolysis according to claim 1, characterized in that, The non-condensable gas flows with the finished oil through the intermediate oil tank and the oil storage tank, and is then transported to the gas storage tank.

4. The oil and gas aftertreatment process following tire pyrolysis according to claim 1, characterized in that, Also includes: The respiratory exhaust gas, the loading exhaust gas, and the exhaust gas generated from the combustion of the non-condensable gases are collected, and the exhaust gas is sprayed to remove dust.

5. A tire pyrolysis oil and gas aftertreatment system, characterized in that, This includes an exhaust gas treatment system and a non-condensable gas treatment system, wherein: The exhaust gas treatment system includes a breathing exhaust gas collection device, a loading exhaust gas collection device, an exhaust gas conveying pipeline, and an exhaust gas burner. The breathing exhaust gas collection device is used to collect the breathing exhaust gas from the oil storage tank. The loading exhaust gas collection device is used to collect the loading exhaust gas generated when loading the finished oil from the oil storage tank onto trucks. The exhaust gas conveying pipeline is used to convey the breathing exhaust gas and the loading exhaust gas to the exhaust gas burner. The exhaust gas burner is used to burn the breathing exhaust gas and the loading exhaust gas, thereby heating the pyrolysis furnace. The non-condensable gas treatment system includes a gas storage tank, a gas distribution manifold, a gas burner, and a non-condensable gas delivery pipeline. The non-condensable gas delivery pipeline is connected in sequence to the gas storage tank, the gas distribution manifold, and the gas burner. The gas storage tank is used to store the non-condensable gas and separate and settle the water and condensate entrained in the non-condensable gas. The gas distribution manifold is used to evenly distribute the non-condensable gas. The gas burner is used to burn the non-condensable gas, thereby heating the pyrolysis furnace.

6. The tire pyrolysis oil and gas aftertreatment system according to claim 5, characterized in that, The breathing exhaust gas collection device includes a breathing valve, a gas collection branch pipe, a one-way valve, a breathing exhaust gas main pipe, and a flame arrester connected in sequence, wherein; The breather valve is located at the top of the oil storage tank; The gas collecting branch pipe connects the breathing valve and the breathing exhaust gas main pipe. The gas collecting branch pipe is used to transport the breathing exhaust gas from each of the oil storage tanks to the breathing exhaust gas main pipe. The one-way valve is used to prevent flue gas backflow; The main exhaust pipe is used to collect the exhaust gas and transport it to the exhaust gas delivery pipeline. The flame arrester is installed between the main exhaust gas pipe and the exhaust gas burner for fire prevention.

7. The tire pyrolysis oil and gas aftertreatment system according to claim 5, characterized in that, The loading exhaust gas collection device includes, in sequence, a sealed loading arm, a gas phase collection hose, a flame arrester at the loading arm end, an oil and gas branch pipe, an oil and gas main pipe, an induced draft fan, and a flame arrester at the end of the main pipe, wherein: The sealed loading arm is used to load the finished oil from the storage tank into the tank truck and to collect the loading exhaust gas squeezed out of the tank truck. The gas collection hose is configured to rise and fall with the sealed loading arm to prevent gas leakage; The flame arrester at the loading arm end is used for fire prevention; The oil and gas branch pipe is used to transport the loading exhaust gas collected by each of the sealed loading arms to the oil and gas main pipe. The main oil and gas pipeline is used to collect the loading exhaust gas and transport the loading exhaust gas to the exhaust gas delivery pipeline. The induced draft fan is used to provide negative pressure and stably draw the exhaust gas from the vehicle to the exhaust gas delivery pipeline. The flame arrester at the end of the main pipe is installed between the oil and gas main pipe and the exhaust gas burner for fire prevention.

8. The tire pyrolysis oil and gas aftertreatment system according to claim 5, characterized in that, The gas burner includes a pressure blower and a gas injection gun; The air outlet of the pressure blower is connected to the air duct of the pyrolysis furnace and is used to deliver air into the air duct. The air duct is provided with multiple air supply pipes, which are used to deliver air to the gas injection gun. The gas spray gun is located on one side of the air duct; the gas inlet of the gas spray gun is connected to the non-condensable gas conveying pipeline, and the nozzle of the gas spray gun extends into the heat preservation furnace hood of the pyrolysis furnace; multiple gas spray guns are provided, and the gas spray guns are used to burn the non-condensable gas.

9. The tire pyrolysis oil and gas aftertreatment system according to claim 8, characterized in that, The exhaust gas burner includes an exhaust gas spray gun, the exhaust gas inlet of which is connected to the exhaust gas delivery pipeline, and the nozzle of which extends into the heat-insulating furnace hood; the exhaust gas spray gun is located on one side of the pyrolysis furnace and is used to burn the breathing exhaust gas and the loading exhaust gas.

10. The tire pyrolysis oil and gas aftertreatment system according to claim 9, characterized in that, It also includes an exhaust gas treatment system, which includes an exhaust gas conveying pipe and a spray dust removal device; one end of the exhaust gas conveying pipe is connected to the exhaust gas outlet of the heat preservation furnace hood, and the other end is connected to the spray dust removal device; the spray dust removal device is used to remove dust from the exhaust gas generated by the combustion of the non-condensable gas, the breathing exhaust gas and the loading exhaust gas.

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