Waste tire recovery system and recovery method thereof

Abstract

The invention provides a waste tire recovery system and a recovery method thereof. The waste tire recovery system comprises a pyrolyzing furnace unit, a cooling module, a gas homogenizing module, a CHP gas generator set and a carbon black processing unit, the pyrolyzing furnace unit is used for performing pyrolysis pretreatment on the waste tires to generate pyrolysis carbon black and hot oil gas; the cooling module is used for cooling and separating the hot oil gas to generate pyrolytic oil and non-condensable raw gas, recycling the pyrolytic oil and transmitting the non-condensable raw gas to the gas homogenizing module; the gas homogenizing module is used for collecting, buffering, temporarily storing, stabilizing the pressure and homogenizing the non-condensable raw gas and transmitting the treated non-condensable raw gas to the CHP gas generator set; the CHP gas generator set is used for combusting the non-condensable raw gas at high temperature to generate power; and the carbon black deep processing module is used for processing the cracked carbon black to obtain a carbon black particle product. According to the invention, the industrial production of waste tire recovery can be realized, and the waste tire recovery efficiency is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of renewable resources, and in particular to a waste tire recycling system and a recycling method thereof. Background Art

[0002] The traditional methods of dealing with waste tires are landfill, incineration, and production of recycled rubber. Landfill and incineration will cause harm to the environment, produce waste gas, waste rubber, and pollute groundwater. The production of recycled rubber from waste tires has the disadvantages of high energy consumption and heavy pollution.

[0003] After years of development at home and abroad, a variety of waste tire pyrolysis furnace types and processes have been developed, but most of them are in the laboratory or pilot stage and it is difficult to achieve industrial production operation. Summary of the invention

[0004] The main purpose of the present invention is to provide a waste tire recycling system and a recycling method thereof, so as to solve the problems in the prior art.

[0005] To achieve the above-mentioned and other related purposes, the first aspect of the present invention provides a waste tire recycling system, including a pyrolysis furnace unit, a cooling module, a gas homogenization module, a CHP gas generator unit and a carbon black processing unit.

[0006] The pyrolysis furnace unit is used for pre-treating waste tires by cracking to produce cracked carbon black and hot oil and gas, and the cracked carbon black is transmitted to the carbon black processing unit, and the hot oil and gas is transmitted to the cooling module.

[0007] The cooling module is used to cool and separate the hot oil and gas to produce pyrolysis oil and non-condensable raw coal gas, recover the pyrolysis oil, and transmit the non-condensable raw coal gas to the gas homogenization module.

[0008] The gas homogenization module is used to collect, buffer, temporarily store, stabilize the pressure, and homogenize the non-condensable raw coal gas, and transmit the treated non-condensable raw coal gas to the CHP gas generator set.

[0009] The CHP gas-fired generator set is used for high-temperature combustion of the non-condensable raw coal gas to generate electricity.

[0010] The carbon black deep processing module is used to process the cracked carbon black to obtain a carbon black particle product.

[0011] As a preferred technical solution of the present invention, the gas homogenization module includes a double-layer airbag device, which includes a treatment tank, an airbag and a fan. The tank body of the treatment tank is provided with an air inlet flange end N1 and an air outlet flange end N2. The airbag is arranged in the tank body of the treatment tank. The air inlet channel of the airbag is connected to the cooling module through a pipeline, and the pipeline connected to the air inlet channel of the airbag extends from the air inlet flange end N1. The air outlet channel of the airbag is connected to the CHP gas generator set through a pipeline, and the pipeline connected to the air outlet channel of the airbag extends from the air outlet flange end N2. The gas transmission channel of the fan is connected to the tank body of the treatment tank.

[0012] As a preferred technical solution of the present invention, a first water seal tank is further connected between the airbag and the cooling module, and an air inlet end of the first water seal tank is connected to the cooling module through a pipeline.

[0013] As a preferred technical solution of the present invention, a second water seal tank is further connected between the airbag and the CHP gas generator set, and the gas outlet end of the second water seal tank is connected to the CHP gas generator set through a pipeline.

[0014] As a preferred technical solution of the present invention, a pressure relief flange end N3 is further provided on the tank body of the processing tank, and the pressure relief flange end N3 is connected to a pressure relief valve through a pipeline.

[0015] As a preferred technical solution of the present invention, a drainage flange end N4 is further provided on the tank body of the treatment tank, and the drainage flange end N4 is connected to a drainage valve through a pipeline.

[0016] As a preferred technical solution of the present invention, an industrial sight glass is also provided on the tank body of the processing tank.

[0017] As a preferred technical solution of the present invention, a pressure gauge P1 and a gas detector P4 are also provided on the tank body of the processing tank.

[0018] As a preferred technical solution of the present invention, a vibration sensor is arranged on the outside of the water seal tank.

[0019] To achieve the above-mentioned purpose and other related purposes, the second aspect of the present invention provides a waste tire recycling method, which is applied to the waste tire recycling system as described above, and the recycling method comprises the steps of:

[0020] The waste tires are subjected to water washing, crushing and magnetic separation to obtain pre-treated waste tires;

[0021] Pyrolyzing the pre-treated waste tires to obtain cracked carbon black and hot oil gas;

[0022] Separate hot oil and gas to obtain pyrolysis oil and non-condensable raw coal gas, and recover the pyrolysis oil;

[0023] Collect, buffer, temporarily store, stabilize pressure and homogenize non-condensable raw coal gas;

[0024] High temperature combustion of non-condensable raw coal gas to generate electricity;

[0025] The pyrolysis carbon black is processed to obtain a carbon black particle product.

[0026] The waste tire recycling system and recycling method provided by the present invention have the following beneficial effects:

[0027] The waste tire recycling system of the present invention forms a complete industrialized recycling system, using a pyrolysis furnace unit to crack pre-treated waste tires, a cooling module to process the hot oil and gas generated by cracking, and a carbon black deep processing module to process the carbon black generated by cracking, thereby recovering pyrolysis oil, carbon black and other by-products in the pre-treated waste tires. Among them, the non-condensable raw gas contains combustible gas components, and the non-condensable raw gas is burned at high temperature by a CHP gas generator set. On the one hand, it can prevent the direct discharge of the non-condensable raw gas from causing safety problems and pollution, and on the other hand, it can realize resource recycling. The CHP gas generator set uses the non-condensable raw gas to generate electricity, which can supply power to the waste tire recycling system of the present invention, achieving the purpose of energy saving and emission reduction. Moreover, in the process of transporting the non-condensable raw coal gas from the cooling module to the CHP gas generator set, it needs to pass through the gas homogenizing module, and the gas homogenizing module collects, buffers, temporarily stores, stabilizes the pressure, and homogenizes the non-condensable raw coal gas generated by the cooling module, and then transports it to the CHP gas generator set stably, thereby improving the safety of the non-condensable raw coal gas during the transportation process, and at the same time meeting the gas supply demand of the CHP gas generator set, and improving the use efficiency of the non-condensable raw coal gas. The present invention realizes the industrialized production of waste tire recycling and effectively improves the efficiency of waste tire recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0029] Figure 1 It is a module schematic diagram of a waste tire recycling system provided by one embodiment of the present invention.

[0030] Figure 2 Schematic diagram of a gas homogenization module of a waste tire recycling system provided in one embodiment of the present invention.

[0031] Figure 3It is a structural schematic diagram of a first water seal tank of a waste tire recycling system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0032] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0033] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0034] In addition, in the description of the present specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0035] References to "one embodiment" or "some embodiments" etc. described in the present specification mean that one or more embodiments of the present invention include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0036] It should be understood that the order of execution of the steps in the following embodiments does not imply a precedence of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0037] Please refer to Figure 1 An embodiment of the present invention provides a waste tire recycling system, comprising a pyrolysis furnace unit 100, a cooling module 200, a gas homogenization module 300, a CHP gas generator unit 400 and a carbon black deep processing module 500; the term "CHP gas generator" in the present invention is a combined heat and power gas generator well known to those skilled in the art;

[0038] The pyrolysis furnace unit 100 is used for pre-treating waste tires by pyrolysis to produce pyrolysis carbon black and hot oil and gas, and transmits the pyrolysis carbon black to the carbon black deep processing module 500, and transmits the hot oil and gas to the cooling module 200;

[0039] The cooling module 200 is used to cool and separate the hot oil and gas to produce pyrolysis oil and non-condensable raw coal gas, recover the pyrolysis oil, and transmit the non-condensable raw coal gas to the gas homogenization module 300; the term "non-condensable raw coal gas" in the present invention refers to the raw coal gas component containing multiple complex components that does not condense into liquid at a specific temperature and pressure, which is well known to those skilled in the art;

[0040] The gas homogenizing module 300 is used to collect, buffer, temporarily store, stabilize the pressure, and homogenize the non-condensable raw coal gas, and transmit the treated non-condensable raw coal gas to the CHP gas generator set 400;

[0041] A CHP gas generator set 400 is used for burning the non-condensable raw coal gas at high temperature to generate electricity;

[0042] The carbon black deep processing module 500 is used to process the pyrolysis carbon black to obtain a carbon black particle product.

[0043] The waste tire recycling system of the present invention forms a complete industrialized recycling system, using the pyrolysis furnace unit 100 to crack the pre-treated waste tires, the cooling module 200 can process the hot oil and gas generated by the cracking, and the carbon black deep processing module 500 can process the carbon black generated by the cracking, so that the pyrolysis oil, carbon black and other by-products in the pre-treated waste tires can be recovered. Among them, the non-condensable raw gas contains combustible gas components, and the non-condensable raw gas is burned at high temperature by the CHP gas generator set 400. On the one hand, it can prevent the non-condensable raw gas from being directly discharged to cause safety problems and pollution, and on the other hand, it can realize resource recycling. The CHP gas generator set 400 uses the non-condensable raw gas to generate electricity, which can supply power to the waste tire recycling system of the present invention, achieving the purpose of energy saving and emission reduction. Moreover, in the process of transporting the non-condensable raw coal gas from the cooling module 200 to the CHP gas generator set 400, it needs to pass through the gas homogenizing module 300, and the gas homogenizing module 300 collects, buffers, temporarily stores, stabilizes the pressure, and homogenizes the non-condensable raw coal gas generated by the cooling module 200, and then transports it to the CHP gas generator set 400 stably, thereby improving the safety of the non-condensable raw coal gas during the transportation process, and at the same time meeting the gas supply demand of the CHP gas generator set 400, and improving the use efficiency of the non-condensable raw coal gas. The present invention realizes the industrialized production of waste tire recycling and effectively improves the efficiency of waste tire recycling.

[0044] It can be understood that the pyrolysis oil generated by the cooling module 200 is collected and recycled by the collection module 600 .

[0045] For further information, please refer to Figure 2 , and combined with Figure 1 In some embodiments, the gas homogenization module 300 of the present invention includes at least one double-layer airbag device 30, and the double-layer airbag device 30 includes a processing tank 31, an airbag 32 and a fan 33. The tank body of the processing tank 31 is provided with an air inlet flange end N1 and an air outlet flange end N2. The airbag 32 is arranged in the tank body of the processing tank 31. The air inlet channel of the airbag 32 is connected to the cooling module 200 through a pipeline, and the pipeline connected to the air inlet channel of the airbag 32 extends from the air inlet flange end N1. The air outlet channel of the airbag 32 is connected to the CHP gas generator set 400 through a pipeline, and the pipeline connected to the air outlet channel of the airbag 32 extends from the air outlet flange end N2. The gas transmission channel of the fan 33 is connected to the tank body of the processing tank 31.

[0046] Understandably, the processing tank 31 is a device with a fixed volume, and a cylindrical tank body can be used. The volume of the airbag 32 is variable, and it can be made of a dense material. The non-condensable raw coal gas generated by the cooling module 200 is directly transported to the airbag 32 through a pipeline. The airbag 32 can collect, buffer and temporarily store the non-condensable raw coal gas transported by multiple transport paths, so that the air pressure or gas volume of the non-condensable raw coal gas inside the airbag 32 meets the demand. At the same time, the fan 33 can transport gas to the processing tank 31. The gas transported by the fan 33 enters the processing tank 31 and fills the space between the airbag 32 and the processing tank 31, generating pressure on the airbag 32. By adjusting the pressure of the fan 33 on the airbag 32, the air pressure inside the airbag 32 can be adjusted, thereby adjusting the air inlet pressure and the air outlet pressure of the airbag 32, and then adjusting the air pressure delivered by the airbag 32 to the CHP gas generator set 400 to meet the CHP gas generator set 400's requirements for the air pressure, flow rate, and flow rate of the non-condensable raw coal gas, thereby improving the utilization efficiency of the non-condensable raw coal gas on the one hand, and improving safety on the other.

[0047] Specifically, the pyrolysis furnace unit 100 of the present invention uses 64 pyrolysis furnaces and 12 CHP gas generators. Each CHP gas generator is equipped with at least one double-layer airbag device 30. The double-layer airbag device 30 accurately supplies gas to the CHP gas generator to ensure stable operation of the CHP gas generator set 400 and improve the possibility of industrial production.

[0048] Further, in some embodiments, the air bag 32 of the present invention is further connected to the cooling module 200 via a first water seal tank 34, and the air inlet end of the first water seal tank 34 is connected to the cooling module 200 via a pipeline. Specifically, an air inlet valve Z1 is further provided between the air inlet end of the first water seal tank 34 and the pipeline connected to the cooling module 200, a pressure gauge P1 is further provided between the air inlet valve Z1 and the pipeline connected to the first water seal tank 34, and the liquid discharge port of the first water seal tank 34 is connected to a liquid discharge valve Z2 via a pipeline.

[0049] Furthermore, in some embodiments, a second water seal tank 35 is connected between the air bag 32 of the present invention and the CHP gas generator set 400, and the gas outlet end of the second water seal tank 35 is connected to the CHP gas generator set 400 through a pipeline.

[0050] For further information, please refer to Figure 3 , and combined with Figure 1 and Figure 2 In some embodiments, a vibration sensor 39 is provided on the outside of the water seal tank of the present invention.

[0051] Specifically, the first water seal tank 34 and the second water seal tank 35 can be a common water seal tank model. When the non-condensable raw gas is input into the water seal tank, bubbles will be formed in the liquid inside the tank body of the water seal tank. After the bubbles rise to the liquid surface, the non-condensable raw gas is output through the output pipe. The water seal tank can form gas isolation to prevent the non-condensable raw gas from flowing back. At the same time, the water seal tank will generate bubble vibrations while generating bubbles. The faster the gas flow rate, the faster the bubble generation rate, and the faster the vibration frequency. These vibrations will eventually be transmitted to the tank body. The vibration sensor 39 can monitor this vibration to monitor the gas transmission status.

[0052] In the present invention, a vibration sensor 39 is provided on the first water seal tank 34, which can monitor the transmission state of the non-condensable raw gas transmitted from the cooling module 200 to the air bag 32, so as to obtain the efficiency of the cooling module 200 in generating the non-condensable raw gas, so as to achieve the purpose of monitoring the state of the cooling module 200, facilitate timely adjustment of the cooling module 200, and avoid the transmission rate of the non-condensable raw gas transmitted to the air bag 32 being too fast. A vibration sensor 39 is provided on the second water seal tank 35, which can monitor the rate at which the air bag 32 transmits the non-condensable raw gas to the CHP gas generator set 400, avoid safety problems caused by too fast a rate, and assist in accurate gas supply.

[0053] For further information, please refer to Figure 2 The tank body of the processing tank 31 is also provided with a pressure relief flange end N3, and the pressure relief flange end N3 is connected to a pressure relief valve Z3 through a pipeline.

[0054] Understandably, the fan 33 supplies air to the tank body of the treatment tank 31. When the air pressure and air volume at the inlet and outlet do not match, resulting in an increase in the pressure of the airbag 32, the gas in the tank body of the treatment tank 31 can be released through the pressure relief valve Z3 to release the pressure of the airbag 32, so that the airbag 32 is kept in a safe and stable environment. A pressure gauge P2 is also provided on the pipeline between the pressure relief flange end N3 and the pressure relief valve Z3.

[0055] Furthermore, a drainage flange end N4 is provided on the tank body of the treatment tank 31, and the drainage flange end N4 is connected to a drainage valve Z4 through a drainage pipe. The drainage valve Z4 can be a ball valve of corresponding specifications, and the drainage pipe can be made of chemically resistant stainless steel.

[0056] Furthermore, an industrial viewing mirror 36 is also provided on the tank body of the processing tank 31. Through the industrial viewing mirror 36, the internal situation can be viewed and monitored when the module is operating normally.

[0057] Furthermore, the tank body of the processing tank 31 is also provided with devices for detecting the state of the tank body, such as a pressure gauge P3, a gas detector P4 and a temperature detector P5.

[0058] It is understandable that if a slight leak occurs in the airbag 32, it can be detected by the gas detector P4 and fed back to the control system, and the control system controls the pressure relief valve Z3 to open and release the leaked non-condensable raw coal gas. It is understandable that in some embodiments, an emergency torch or other emergency ignition device can be set on the other side of the pressure relief valve Z3, and the leaked non-condensable raw coal gas is burned by the emergency torch and will not be directly discharged into the air. It is understandable that the gas detector P4 of the above embodiment of the present invention includes but is not limited to gas detectors such as CO and CO2.

[0059] Furthermore, a radar or ultrasonic level meter is also provided on the tank body of the processing tank 31 to monitor the gas volume in the air bag 32 .

[0060] The gas homogenization module 300 of the present invention operates safely and stably to ensure the overall stability and safety of the waste tire recycling system, thereby realizing industrialized production.

[0061] An embodiment of the present invention provides a waste tire recycling method, which is applied to the waste tire recycling system as described above. The recycling method comprises the following steps:

[0062] The waste tires are subjected to water washing, crushing and magnetic separation to obtain pre-treated waste tires;

[0063] The pre-treated waste tires are pyrolyzed by a pyrolysis furnace unit to obtain cracked carbon black and hot oil gas;

[0064] Use cooling module to separate hot oil and gas, obtain pyrolysis oil and non-condensable raw coal gas, and recycle pyrolysis oil;

[0065] The gas homogenization module is used to cache and homogenize the non-condensable raw coal gas, and the treated non-condensable raw coal gas is transmitted to the CHP gas generator set;

[0066] Use CHP gas generator sets to burn non-condensable raw coal gas at high temperature to generate electricity;

[0067] The carbon black deep processing module is used to process the cracked carbon black to obtain the carbon black particle product.

[0068] The recycling method further comprises the steps of:

[0069] CHP gas generator sets are used to burn non-condensable raw coal gas at high temperature to generate electricity and produce tail gas;

[0070] Using tail gas to dry carbon black pellet products;

[0071] The dried gas is denitrated, deodorized, and freed from non-methane hydrocarbons, thus purifying the discharge.

[0072] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A waste tire recycling system, characterized in that: Including pyrolysis furnace unit, cooling module, gas homogenization module, CHP gas generator unit and carbon black processing unit; A pyrolysis furnace unit is used for pre-treating waste tires by pyrolysis to produce pyrolysis carbon black and hot oil and gas, and the pyrolysis carbon black is transmitted to the carbon black processing unit, and the hot oil and gas is transmitted to the cooling module; A cooling module, used for cooling and separating the hot oil and gas to produce pyrolysis oil and non-condensable raw coal gas, recovering the pyrolysis oil, and transmitting the non-condensable raw coal gas to the gas homogenization module; The gas homogenization module is used to collect, buffer, temporarily store, stabilize the pressure, and homogenize the non-condensable raw coal gas, and transmit the treated non-condensable raw coal gas to the CHP gas generator set; A CHP gas-fired generator set is used for burning the non-condensable raw coal gas at high temperature to generate electricity; The carbon black deep processing module is used to process the cracked carbon black to obtain a carbon black particle product.

2. The waste tire recycling system according to claim 1, characterized in that: The gas homogenizing module includes a double-layer airbag device, which includes a processing tank, an airbag and a fan. The tank body of the processing tank is provided with an air inlet flange end N1 and an air outlet flange end N2. The airbag is arranged in the tank body of the processing tank. The air inlet channel of the airbag is connected to the cooling module through a pipeline. The pipeline connected to the air inlet channel of the airbag extends from the air inlet flange end N1. The air outlet channel of the airbag is connected to the CHP gas generator set through a pipeline. The pipeline connected to the air outlet channel of the airbag extends from the air outlet flange end N2. The gas transmission channel of the fan is connected to the tank body of the processing tank.

3. The waste tire recycling system according to claim 2, characterized in that: A first water seal tank is also connected between the air bag and the cooling module, and an air inlet end of the first water seal tank is connected to the cooling module through a pipeline.

4. The waste tire recycling system according to claim 2, characterized in that: A second water seal tank is also connected between the air bag and the CHP gas generator set, and the gas outlet end of the second water seal tank 5 is connected to the CHP gas generator set through a pipeline.

5. The waste tire recycling system according to claim 2, characterized in that: A pressure relief flange end N3 is also provided on the tank body of the processing tank, and the pressure relief flange end N3 is connected to a pressure relief valve through a pipeline.

6. The waste tire recycling system according to claim 2, characterized in that: The tank body of the treatment tank is also provided with a drainage flange end N4, and the drainage flange end N4 is connected to a drainage valve through a pipeline.

7. The waste tire recycling system according to claim 2, characterized in that: An industrial sight glass is also provided on the tank body of the processing tank.

8. The waste tire recycling system according to claim 2, characterized in that: The tank body of the processing tank is also provided with a pressure gauge P1 and a gas detector P4.

9. The waste tire recycling system according to claim 3 or 4, characterized in that: A vibration sensor is arranged on the outside of the water seal tank.

10. A method for recycling waste tires, characterized in that: Applied to any one of the waste tire recycling systems as claimed in claims 1 to 8, the recycling method comprises the steps of: The waste tires are subjected to water washing, crushing and magnetic separation to obtain pre-treated waste tires; Pyrolyzing the pre-treated waste tires to obtain cracked carbon black and hot oil gas; Separate hot oil and gas to obtain pyrolysis oil and non-condensable raw coal gas, and recover the pyrolysis oil; Collect, buffer, temporarily store, stabilize pressure and homogenize non-condensable raw coal gas; High temperature combustion of non-condensable raw coal gas to generate electricity; The pyrolysis carbon black is processed to obtain a carbon black particle product.

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