Tobacco particulate matter nicotine extraction and pyrolysis pretreatment apparatus and method

Abstract

This invention relates to the field of raw material production technology in the tobacco industry, specifically to a device and method for pre-treatment of nicotine extraction and pyrolysis from tobacco particles. The particles are passed through a 200-mesh sieve, mixed with a solvent in a certain proportion for pre-treatment, and placed in a material liquid insulation and stirring device. Then, the material liquid is conveyed by a material liquid conveying device into an atomizing drying tower mechanism. Under the action of a centrifugal atomizer, it is atomized into tiny particles. Simultaneously, a negative ion air heating mechanism inputs hot air to fully mix with the particles, rapidly drying the particles in the drying tower. The dried mixture is separated by a gas-solid separation mechanism; the solid is collected, and the gas enters a condensation mechanism for condensation, obtaining the condensed extract. The uncondensed gas is discharged into the atmosphere after passing through an exhaust gas treatment device. This invention can effectively solve the problem of nicotine extraction in continuous industrial production and reduce the concentration of nicotine in tobacco particles, providing pre-treatment for the extraction of aromatic compounds from tobacco particles via pyrolysis.

Description

Technical Field

[0001] This invention relates to the field of raw material production technology in the tobacco industry, specifically to a device and method for extracting nicotine from tobacco particles and for pyrolysis pretreatment. Background Technology

[0002] Extracting aroma compounds from tobacco has always been a hot topic and focus of research. The aroma components in tobacco include nitrogen-containing compounds such as alkaloids, oxygen-containing compounds such as carbohydrates and organic acids, and aromatic compounds such as terpenes. Traditional pyrolysis and extraction methods for extracting aroma compounds are inefficient and waste a lot of reagents because tobacco contains a large amount of nicotine. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention provides an apparatus and method for extracting nicotine from tobacco particles and for pyrolysis pretreatment, which greatly reduces the nicotine content of tobacco particles by pyrolysis and increases the proportion of aromatic compounds.

[0004] The technical solution adopted in this invention is as follows:

[0005] On the one hand, a device for extracting nicotine from tobacco particles and for pyrolysis pretreatment is provided, including a liquid heat preservation and stirring device, a liquid conveying device, an atomizing and drying mechanism, a gas-solid separation mechanism, a condensation mechanism, and a waste gas treatment device;

[0006] The liquid heat preservation and stirring device is connected to the atomizing drying mechanism through the liquid conveying device. The atomizing drying mechanism is connected to the gas-solid separation mechanism. The gas outlet of the gas-solid separation mechanism is connected to the condensing mechanism. The gas outlet of the condensing mechanism is connected to the waste gas treatment device.

[0007] Furthermore, the atomizing drying mechanism includes a centrifugal spray device, a drying tower, an air heating device, and a negative ion generator; the centrifugal spray device is connected to the liquid conveying device and the drying tower, and the centrifugal spray device is used to atomize the liquid from the liquid insulation and stirring device and spray it into the drying tower; the air heating device is connected to the drying tower through the negative ion generator, and the negative ions generated by the negative ion generator are sent into the drying tower by the hot air from the air heating device.

[0008] Furthermore, the gas-solid separation mechanism includes a gas-solid separation device, a particle collection device, and a gas filtration device; the outlet of the drying tower is connected to the inlet of the gas-solid separation device, the solid outlet of the gas-solid separation device is connected to the particle collection device through the rotary discharge valve, and the gas outlet of the gas-solid separation device is connected to the gas filtration device.

[0009] Furthermore, the condensation mechanism includes a condensation tower, a gas-liquid separation device, a liquid collection device, and a constant-temperature condenser. The inlet of the condensation tower is connected to the gas filtration device, the outlet of the condensation tower is connected to the gas-liquid separation device, the liquid outlet of the gas-liquid separation device is connected to the liquid collection device, the gas outlet of the gas-liquid separation device is connected to the waste gas treatment device, and the condensation tower is connected to the constant-temperature condenser.

[0010] Furthermore, a first temperature sensor is installed on the connecting pipe between the liquid conveying device and the centrifugal spraying device, a second temperature sensor is installed on the connecting pipe between the air heating device and the drying tower, and a third temperature sensor is installed on the connecting pipe between the gas filtration device and the condensation tower.

[0011] Furthermore, the particle collection device is equipped with a humidity sensor.

[0012] Furthermore, the tobacco particulate nicotine extraction and pyrolysis pretreatment device also includes a control device. The control device is connected to the first temperature sensor, the second temperature sensor, the third temperature sensor, and the humidity sensor, respectively, so as to collect the detection data of each temperature sensor and humidity sensor in real time. The control device is also connected to the liquid heat preservation and stirring device, the liquid conveying device, the centrifugal spraying device, the air heating device, and the constant temperature condenser, respectively, so as to adjust the stirring speed of the liquid heat preservation and stirring device, the output flow rate of the liquid conveying device, the spray particle size of the centrifugal spraying device, the hot air flow rate and temperature output by the air heating device, and the temperature of the condensate inside the condensation tower.

[0013] On the other hand, a method for extracting nicotine from tobacco particles and a pyrolysis pretreatment method are provided, employing the above-mentioned apparatus, including the following steps:

[0014] Step 1: After passing the tobacco granules through a 200-mesh sieve, soak them in 65℃ water for 3 hours, and then pour them into a liquid heat preservation and stirring device for stirring.

[0015] Step 2: The liquid output from the liquid insulation and stirring device enters the centrifugal spraying device through the liquid conveying device. In the drying tower, the atomized liquid sprayed from the centrifugal nozzle of the centrifugal spraying device is instantly dried by the hot air from the air heating device. The negative ions in the hot air can prevent tobacco particles from sticking together.

[0016] Step 3: Most of the dried solid particles enter the particle collection device through the rotary discharge valve. A small portion of the solid particles continue to flow with the gas and are collected by the gas filtration device. The gas enters the condensation tower for condensation. After condensation, the fluid is separated by the gas-liquid separation device. The liquid enters the liquid collection device, and the gas is discharged into the atmosphere after being treated by the waste gas treatment device.

[0017] Furthermore, step one also includes: starting the air heating device for preheating, starting the constant temperature condenser to generate cooling fluid; after the temperature detected by the second temperature sensor exceeds 180°C and the temperature detected by the third temperature sensor exceeds 100°C, the control device automatically controls the liquid conveying device and the centrifugal spraying device to work.

[0018] Furthermore, the control device regulates the hot air flow and temperature of the air heating device based on the output flow data of the liquid conveying device and the temperature data of the first temperature sensor.

[0019] Furthermore, when the humidity data from the humidity sensor exceeds a preset threshold, the control device adjusts the hot air flow and temperature of the air heating device to reduce the humidity of solid particles.

[0020] Furthermore, when the temperature detected by the third temperature sensor is below 100°C, the control device adjusts the hot air flow and temperature of the air heating device to prevent the gas from condensing prematurely before it is sent into the condensation tower.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] The tobacco particles treated by the tobacco particle extraction and pyrolysis pretreatment device and method of this invention have a nicotine content reduced by more than 70% compared to the untreated particles. Furthermore, the treated tobacco particles can be directly used in tobacco pyrolysis production, solving the problems of low purity in tobacco particle reuse and the separation and extraction of nicotine and aromatic compounds. This device can automatically adjust its operating status according to working conditions, achieving automation of the entire tobacco particle processing without additional manual intervention. The hot air temperature and flow rate of the air heating device are controlled based on parameters from three temperature and humidity sensors, thereby improving the energy efficiency of the entire system and ensuring product quality. Simultaneously, continuous production improves production efficiency, facilitates integration with other equipment for industrial production, is simple to operate, and offers high visualization; the operating parameters of each part of the device can be displayed in real time on a computer, allowing operators to intuitively grasp the operating status. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1A schematic diagram of the structure of a tobacco particulate nicotine extraction and pyrolysis pretreatment device according to one embodiment of the present invention is shown;

[0025] Figure 2 A schematic diagram of a tobacco particulate nicotine extraction and pyrolysis pretreatment device according to another embodiment of the present invention is shown. Detailed Implementation

[0026] The above-mentioned and other technical features and advantages of the present invention will be described in more detail below with reference to the accompanying drawings.

[0027] In the description of this invention, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of that feature.

[0028] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0029] Example 1

[0030] like Figure 1As shown, the tobacco particulate nicotine extraction and pyrolysis pretreatment device includes a liquid heating and stirring device 1, a liquid conveying device 2, an atomizing and drying mechanism, a gas-solid separation mechanism, a condensing mechanism, and an exhaust gas treatment device 18. The liquid heating and stirring device 1 is connected to the atomizing and drying mechanism via the liquid conveying device 2. The atomizing and drying mechanism is connected to the gas-solid separation mechanism. The gas outlet of the gas-solid separation mechanism is connected to the condensing mechanism, and the gas outlet of the condensing mechanism is connected to the exhaust gas treatment device 18. The liquid heating and stirring device 1 includes a motor, a stirring paddle, a storage tank, and external insulation cotton. The liquid conveying mechanism 2 includes a peristaltic pump and a liquid conveying pipeline. The exhaust gas treatment device 18 has a one-way valve to prevent the backflow of the harmful gas absorption liquid. Water is used as the solvent for continuous nicotine extraction. Tobacco particles are passed through a 200-mesh sieve, and the sieved particles are collected. They are then soaked in 65°C water for 3 hours and poured into a heat-insulating stirring device 1 for continuous operation. The liquid material is conveyed through a liquid material conveying device 2 and enters an atomizing drying mechanism where it is instantly dried under the action of hot air. The liquid material then enters a gas-solid separation mechanism where it is fluidized. The solid particles are collected by the gas-solid separation mechanism, and the gas enters a condensing mechanism for condensation. The condensed liquid is collected to obtain the condensed extract. The uncondensed gas is treated by an exhaust gas treatment device 18 and then discharged into the atmosphere.

[0031] The atomizing drying mechanism includes a centrifugal spray device 4, a drying tower 5, an air heating device 8, and a negative ion generator 9. The centrifugal spray device 4 is connected to the liquid conveying device 2 and the drying tower 5. The centrifugal spray device 4 atomizes the liquid from the liquid insulation and stirring device 1 and sprays it into the drying tower 5. The air heating device 8 is connected to the drying tower 5 via the negative ion generator 9. The negative ions generated by the negative ion generator 9 are sent into the drying tower 5 by the hot air from the air heating device 8. The negative ion generator 9 can generate negative ions, which are carried into the drying tower by the incoming air, effectively preventing tobacco particles from sticking together and making the particles more evenly distributed in the hot air. The drying tower 5 contains centrifugal nozzles, and above the nozzles is a gas guide pipe. The gas inlet of the gas guide pipe is connected to the gas outlet of the air heating device 8.

[0032] The gas-solid separation mechanism includes a gas-solid separation device 10, a particle collection device 12, and a gas filtration device 13. The outlet of the drying tower 5 is connected to the inlet of the gas-solid separation device 10. The solid outlet of the gas-solid separation device 10 is connected to the particle collection device 12 via a rotary discharge valve 11, and the gas outlet of the gas-solid separation device 10 is connected to the gas filtration device 13. The particle collection device 12 is connected to the gas-solid separation device 10 via the rotary discharge valve 11, allowing for the continuous transfer of dried solid particles into the particle collection device 12 while maintaining system sealing.

[0033] The condensation mechanism includes a condensation tower 15, a gas-liquid separator 16, a liquid collection device 17, and a constant-temperature condenser 19. The inlet of the condensation tower 15 is connected to the gas filter 13, the outlet of the condensation tower 15 is connected to the gas-liquid separator 16, the liquid outlet of the gas-liquid separator 16 is connected to the liquid collection device 17, the gas outlet of the gas-liquid separator 16 is connected to the waste gas treatment device 18, and the condensation tower 15 is connected to the constant-temperature condenser 19. The constant-temperature condenser 19 can precisely control the temperature by 0.1℃, maintaining a constant temperature for the condensed fluid inside the condensation tower 15.

[0034] A first temperature sensor 3 is installed on the connecting pipe between the liquid conveying device 2 and the centrifugal spraying device 4; a second temperature sensor 6 is installed on the connecting pipe between the air heating device 8 and the drying tower 5; a third temperature sensor 14 is installed on the connecting pipe between the gas filtration device 13 and the condensing tower 15; and a humidity sensor 20 is installed inside the particle collection device 12.

[0035] Nicotine is extracted continuously using water as a solvent. Tobacco particles are passed through a 200-mesh sieve, collected, and soaked in 65°C water for 3 hours. Then, the mixture is poured into a continuous operation device 1 for heat preservation and stirring. The mixture is conveyed by a material conveying device 2 and enters an atomizing drying mechanism. Under the action of hot air from a centrifugal spray device 4, a negative ion generator 9, and an air heating device 8, the mixture is instantly dried. It then flows into a gas-solid separation device 10 from the bottom of the drying tower 5. Most of the solid particles enter the particle collection device 12 through a rotary discharge valve 11, while a small portion continues to flow with the gas and is collected by a gas filter device 13. The gas enters a condenser tower 15 for condensation. The condensed fluid is separated by a gas-liquid separation device 16, and the liquid enters a liquid collection device 17. The gas is treated by a waste gas treatment device 18 before being discharged into the atmosphere.

[0036] Example 2

[0037] like Figure 2 As shown, the difference between Example 2 and Example 1 is that the tobacco particulate nicotine extraction and pyrolysis pretreatment device also includes a control device 7. The control device 7 is connected to the first temperature sensor 3, the second temperature sensor 6, the third temperature sensor 14, and the humidity sensor 20, respectively, thereby enabling real-time acquisition of the detection data from each temperature and humidity sensor. The control device 7 is also connected to the liquid insulation and stirring device 1, the liquid conveying device 2, the centrifugal spraying device 4, the air heating device 8, and the constant temperature condenser 19, thereby enabling adjustment of the stirring speed of the liquid insulation and stirring device 1, the output flow rate of the liquid conveying device 2, the spray particle size of the centrifugal spraying device 4, the hot air flow rate and temperature output by the air heating device 8, and the temperature of the condensate inside the condensation tower 15.

[0038] Specifically, the control device 7 uses a computer. The entire process is automatically regulated by the computer, adjusting the liquid flow rate, spray particle size, hot air flow rate, and temperature. During the process, the computer 7 collects parameters from temperature sensors 3, 6, and 14, parameters from the liquid conveying device 2, voltage and current parameters from the centrifugal spray device 4, parameters from the air heating device 8, parameters from the humidity sensor 20, and the inlet and outlet water temperatures of the condenser tower 15 in real time, automatically adjusting the operating status of each part to bring the entire system to its optimal state.

[0039] The motor of the liquid-insulating and stirring device 1 is connected to a computer and exchanges data. The computer 7 can monitor the stirring speed and time the stirring, and can automatically adjust the speed according to the operating status of the centrifugal spray device 4. The liquid conveying device 2 can convey solid-liquid mixtures and can be connected to the computer 7 and exchange data. The computer can control the speed of the peristaltic pump in the liquid conveying device 2 to precisely control the flow rate, with an accuracy of 0.1 mL. The centrifugal spray device 4 and the air heating device 8 can exchange data with the computer 7. The computer 7 can automatically control the speed of the centrifugal spray device 4 and the heating power of the air heating device 8 according to the liquid flow rate. The particle collection device 12 is equipped with a humidity sensor 20, which can send humidity information to the computer 7. The computer 7 can adjust the flow rate of the peristaltic pump in the conveying device 2 and the heating power and air flow rate of the air heating device 8 according to the humidity information.

[0040] The centrifugal nozzles in drying tower 5 are electrically controlled and connected to a computer, allowing the computer to read nozzle operating parameters and control rotation speed. The motor frequency converter of the liquid insulation and stirring device 1 is also connected to a computer, allowing the computer to read operating parameters and control rotation speed and timing. The motor frequency converter of the liquid conveying device 2 is also connected to a computer, allowing the computer to control conveying flow rate and timing. The air heating device 8 can be connected to a computer, allowing the computer to control air volume and heating power.

[0041] Example 3

[0042] A method for extracting nicotine from tobacco particles and a pyrolysis pretreatment method are provided, using the tobacco particle nicotine extraction and pyrolysis pretreatment apparatus described in Example 2, comprising the following steps:

[0043] Step 1: After passing the tobacco granules through a 200-mesh sieve, soak them in 65°C water for 3 hours, and then pour them into the material liquid heat preservation and stirring device 1 for stirring;

[0044] Step 2: The liquid output from the liquid insulation and stirring device 1 enters the centrifugal spraying device 4 through the liquid conveying device 2. In the drying tower 5, the atomized liquid sprayed from the centrifugal nozzle of the centrifugal spraying device 4 is instantly dried by the hot air from the air heating device 8. The negative ions in the hot air can prevent tobacco particles from sticking together.

[0045] Step 3: Most of the dried solid particles enter the particle collection device 12 through the rotary discharge valve 11. A small portion of the solid particles continue to flow with the gas and are collected by the gas filter device 13. The gas enters the condenser tower 15 for condensation. The condensed fluid is separated by the gas-liquid separator 16. The liquid enters the liquid collection device 17, and the gas is treated by the waste gas treatment device 18 before being discharged into the atmosphere.

[0046] More specifically, tobacco particles are passed through a 200-mesh sieve and mixed with distilled water at a mass ratio of 1:10. The mixture is then placed in a constant temperature water bath and kept at 65°C for 3 hours. Subsequently, it is poured into the heat-preserving stirring device 1 of this invention. The stirring speed and time are set using computer software 7, and the air heating device 8 is activated to preheat and the constant temperature condenser 19 is activated to generate cooling fluid. Once the temperature of the second temperature sensor 6 exceeds 180°C and the temperature of the third temperature sensor 14 exceeds 100°C, the computer 7 automatically controls the centrifugal nozzles in the conveying device 2 and the centrifugal spraying device 4 to operate.

[0047] The material conveying device 2 has a default initial flow rate of 100 ml / min. The flow rate, centrifugal nozzle speed, and air heating device power can be automatically increased by computer control. Alternatively, the flow rate and other parameters can be manually set to fixed values. When the material conveying device 2 starts working, the computer 7 simultaneously receives data from the first temperature sensor 3. Based on the flow rate data of the material conveying device 2 and the temperature data from the first temperature sensor 3, the computer 7 can adjust the hot air temperature and flow rate of the air heating device 8. This ensures production quality while reducing energy consumption.

[0048] The gas-solid separation device 10 is connected to the gas filtration device 13, the rotary discharge valve 11, and the particle collection device 12. The rotary discharge valve 11 ensures that the separated solids are discharged from the device in a timely unidirectional manner to the collection device. The particle collection device 12 has a humidity sensor 20, which can detect the humidity of the solid particles in real time and send the humidity data to the computer 7. When the humidity exceeds the production requirement limit, the computer 7 can automatically adjust the hot air temperature and flow rate of the air heating device 8 to reduce the humidity of the solid particles.

[0049] The gas filtration device 13 filters the gas separated from the gas-solid separator 10, removing any small solid particles that are not separated. The inner wall of the gas filtration device 13's outlet has a temperature sensor that detects the outlet temperature and transmits the data to the computer 7. If the detected temperature is below 100°C, the computer 7 automatically adjusts the hot air temperature and flow rate of the air heater 8 to prevent the condensation of tobacco particulate matter extraction vapors in the hot air.

[0050] The condenser tower 15 is connected to the thermostatic condenser 19 and the gas-liquid separator 16. The thermostatic condenser 19 can maintain the temperature of the circulating coolant at 5°C with an accuracy of 0.1°C.

[0051] The gas-liquid separator 16 is connected to the waste gas treatment device 18 and the liquid collection device 17. It can separate the gas and liquid in the condensed fluid, allowing the liquid to enter the liquid collection device 17 and the gas to enter the waste gas treatment device 18, where it is treated and then discharged into the atmosphere.

[0052] The computer can regulate the flow rate and temperature of the hot air from the air heating device 8 based on the output flow rate data of the liquid conveying device 2 and the temperature data of the first temperature sensor 3. When the humidity data of the humidity sensor 20 exceeds a preset threshold, the computer regulates the flow rate and temperature of the hot air from the air heating device 8 to reduce the humidity of the solid particles. When the temperature detected by the third temperature sensor 14 is below 100°C, the computer regulates the flow rate and temperature of the hot air from the air heating device 8 to prevent premature condensation of the gas before it enters the condensation tower 15. This invention can effectively solve the problem of nicotine extraction in industrial continuous production and reduce the concentration of nicotine in tobacco particles, providing pretreatment for the extraction of aromatic compounds from the pyrolysis of tobacco particles.

[0053] The above are merely preferred embodiments of the present invention and are illustrative rather than restrictive. The structure and connection methods of the components in the present invention can be varied, and any equivalent transformations and improvements made based on the technical solution of the present invention should not be excluded from the protection scope of the present invention.

Claims

1. A device for extracting nicotine from tobacco particles and a pyrolysis pretreatment method, characterized in that, It includes a liquid heat preservation and stirring device (1), a liquid conveying device (2), an atomizing drying mechanism, a gas-solid separation mechanism, a condensation mechanism, a waste gas treatment device (18), and a control device (7). The liquid heat preservation and stirring device (1) is connected to the atomizing drying mechanism through the liquid conveying device (2), the atomizing drying mechanism is connected to the gas-solid separation mechanism, the gas outlet of the gas-solid separation mechanism is connected to the condensing mechanism, and the gas outlet of the condensing mechanism is connected to the waste gas treatment device (18). The atomizing drying mechanism includes a centrifugal spray device (4), a drying tower (5), an air heating device (8), and a negative ion generator (9); the centrifugal spray device (4) is connected to the liquid conveying device (2) and the drying tower (5), and the centrifugal spray device (4) is used to atomize the liquid from the liquid heat preservation and stirring device (1) and spray it into the drying tower (5); the air heating device (8) is connected to the drying tower (5) through the negative ion generator (9), and the negative ions generated by the negative ion generator (9) are sent into the drying tower (5) by the hot air from the air heating device (8); the gas-solid separation mechanism includes a gas-solid separation device (10), a particle collection device (12), and a gas filtration device (13); the outlet of the drying tower (5) is connected to the inlet of the gas-solid separation device (10), and the solids of the gas-solid separation device (10) are separated into solids and solids. The outlet is connected to the particle collection device (12) via a rotary discharge valve (11), and the gas outlet of the gas-solid separation device (10) is connected to the gas filter device (13); the condensation mechanism includes a condensation tower (15), a gas-liquid separation device (16), a liquid collection device (17), and a constant temperature condenser (19); the inlet of the condensation tower (15) is connected to the gas filter device (13), and the outlet of the condensation tower (15) is connected to the gas-liquid separation device (16); a first temperature sensor (3) is installed on the connecting pipe between the liquid conveying device (2) and the centrifugal spray device (4), a second temperature sensor (6) is installed on the connecting pipe between the air heating device (8) and the drying tower (5), and a third temperature sensor (14) is installed on the connecting pipe between the gas filter device (13) and the condensation tower (15); a humidity sensor (20) is installed inside the particle collection device (12); The methods for extracting nicotine from tobacco particles and for pyrolysis pretreatment are as follows: Step 1: After passing the tobacco particles through a 200-mesh sieve, soak them in 65°C water for 3 hours, then pour them into the material liquid heat preservation and stirring device (1) for stirring; start the air heating device (8) to preheat, and start the constant temperature condenser (19) to generate cooling fluid; After the temperature detected by the second temperature sensor (6) exceeds 180°C and the temperature detected by the third temperature sensor (14) exceeds 100°C, the control device (7) automatically controls the liquid conveying device (2) and the centrifugal spraying device (4) to work. Step 2: The liquid output from the liquid insulation and stirring device (1) enters the centrifugal spray device (4) through the liquid conveying device (2). In the drying tower (5), the atomized liquid sprayed by the centrifugal nozzle of the centrifugal spray device (4) is instantly dried by the hot air from the air heating device (8). The negative ions in the hot air can prevent tobacco particles from sticking together. The control device (7) adjusts the hot air flow and temperature of the air heating device (8) according to the output flow data of the liquid conveying device (2) and the temperature data of the first temperature sensor (3). Step 3: Most of the dried solid particles enter the particle collection device (12) through the rotary discharge valve (11), and a small portion of solid particles continue to flow with the gas and are collected by the gas filtration device (13). The gas enters the condenser tower (15) for condensation. After condensation, the fluid is separated by the gas-liquid separator (16). The liquid enters the liquid collection device (17), and the gas is discharged into the atmosphere after being treated by the waste gas treatment device (18). When the humidity data of the humidity sensor (20) exceeds the preset threshold, the control device (7) regulates the hot air flow and temperature of the air heating device (8) to reduce the humidity of the solid particles. When the temperature detected by the third temperature sensor (14) is lower than 100°C, the control device (7) regulates the hot air flow and temperature of the air heating device (8) to prevent the gas from condensing prematurely before being sent into the condenser tower (15).

2. The tobacco particulate matter nicotine extraction and pyrolysis pretreatment apparatus as described in claim 1, characterized in that, The liquid outlet of the gas-liquid separator (16) is connected to the liquid collection device (17), the gas outlet of the gas-liquid separator (16) is connected to the waste gas treatment device (18), and the condensing tower (15) is connected to the constant temperature condenser (19).

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