CN-117356744-B - Pretreatment device and method for nicotine leaching and pyrolysis of tobacco particles

Abstract

The invention relates to the technical field of raw material production in the tobacco industry, in particular to a tobacco particulate matter nicotine leaching and pyrolysis pretreatment device and method. The method comprises the steps of sieving particles with a 200-mesh sieve, mixing the particles with a solvent according to a certain proportion, pretreating the mixture, placing the mixture in a feed liquid heat-preserving stirring device, conveying the mixture into an atomization drying tower mechanism by a feed liquid conveying device, atomizing the mixture into tiny particles under the action of a centrifugal atomizer, simultaneously, fully mixing the particles with hot air input by an anion air heating mechanism, rapidly drying the particles in a drying tower, separating the dried mixed fluid by a gas-solid separation mechanism, collecting solids, condensing the solids by a gas inlet condensing mechanism, and obtaining condensed extract. The uncondensed gas is discharged to the atmosphere after passing through the exhaust gas treatment device. The method can effectively solve the problem of extracting nicotine in industrial continuous production, reduce the concentration of nicotine in tobacco particles and pretreat the tobacco particles for pyrolysis and extraction of aromatic substances.

Inventors

• ZHU SHAOYIN
• ZHENG QI
• MA JUN
• ZHOU NA
• CHANG QING
• ZOU QI
• XU ZHIWEN
• WANG RUI
• ZHU HUACHENG
• SHEN YUANYUAN

Assignees

• 红塔烟草(集团)有限责任公司

Dates

Publication Date

20260505

Application Date

20231127

Claims (2)

1. 1. The tobacco particulate matter leaching nicotine and pyrolysis pretreatment device is characterized by comprising a feed liquid heat preservation stirring device (1), a feed liquid conveying device (2), an atomization drying mechanism, a gas-solid separation mechanism, a condensation mechanism, an exhaust gas treatment device (18) and a control device (7); the feed liquid heat preservation stirring device (1) is connected with an atomization drying mechanism through the feed liquid conveying device (2), the atomization drying mechanism is connected with the gas-solid separation mechanism, a gas outlet of the gas-solid separation mechanism is connected with the condensation mechanism, and a gas outlet of the condensation mechanism is connected with the waste gas treatment device (18); the atomization drying mechanism comprises a centrifugal spraying device (4), a drying tower (5), an air heating device (8) and an anion generating device (9), wherein the centrifugal spraying device (4) is connected with the feed liquid conveying device (2), the centrifugal spraying device (4) is connected with the drying tower (5), the centrifugal spraying device (4) is used for atomizing and spraying feed liquid from the feed liquid heat-preserving stirring device (1) into the drying tower (5), the air heating device (8) is connected with the drying tower (5) through the anion generating device (9), anions generated by the anion generating device (9) are sent into the drying tower (5) through hot air from the air heating device (8), the gas-solid separation mechanism comprises a gas-solid separation device (10), a particle collecting device (12) and a gas filtering device (13), a discharge port of the drying tower (5) is connected with a feed port of the gas-solid separation device (10), a discharge outlet of the gas-solid separation device (10) is connected with the gas-solid separation device (16) through a rotary valve (11), and the gas-solid separation device (13) is connected with the gas-solid separation device (16) through a rotary valve (12), and the gas-solid separation mechanism (13) comprises the condensation device (13) The device comprises a liquid collecting device (17) and a constant temperature condenser (19), wherein an inlet of a condensing tower (15) is connected with a gas filtering device (13), an outlet of the condensing tower (15) is connected with a gas-liquid separation device (16), a first temperature sensor (3) is arranged on a connecting pipeline between a feed liquid conveying device (2) and a centrifugal spraying device (4), a second temperature sensor (6) is arranged on a connecting pipeline between an air heating device (8) and a drying tower (5), a third temperature sensor (14) is arranged on a connecting pipeline between the gas filtering device (13) and the condensing tower (15), and a humidity sensor (20) is arranged in a particle collecting device (12); the method for leaching nicotine from the tobacco particles and carrying out pyrolysis pretreatment comprises the following steps: Firstly, sieving tobacco particles with a 200-mesh sieve, soaking the tobacco particles for 3 hours by using 65 ℃ water, then pouring the tobacco particles into a feed liquid heat-preserving stirring device (1) for stirring, starting an air heating device (8) for preheating, starting a constant-temperature condenser (19) for generating cooling fluid, and automatically controlling a feed liquid conveying device (2) and a centrifugal spraying device (4) to work by a control device (7) after the temperature detected by a second temperature sensor (6) exceeds 180 ℃ and the temperature detected by a third temperature sensor (14) exceeds 100 ℃; Step two, the feed liquid output from the feed liquid heat preservation stirring device (1) enters a centrifugal spraying device (4) through a feed liquid conveying device (2), atomized feed liquid sprayed out of a centrifugal nozzle of the centrifugal spraying device (4) is instantly dried by hot air from an air heating device (8) in a drying tower (5), negative ions in the hot air can prevent tobacco particles from adhering, and a control device (7) regulates and controls the hot air flow and the temperature of the air heating device (8) according to output flow data of the feed liquid conveying device (2) and temperature data of a first temperature sensor (3); the third step is that most of the dried solid particles enter a particle collecting device (12) through a rotary discharging valve (11), a small part of the solid particles continue to flow along with the gas, the solid particles are collected by a gas filtering device (13), the gas enters a condensing tower (15) to be condensed, the condensed fluid is separated by a gas-liquid separating device (16), the liquid enters a liquid collecting device (17), the gas is treated by an exhaust gas treatment device (18) and then is discharged into the atmosphere, when the humidity data of a humidity sensor (20) exceeds a preset threshold value, a control device (7) regulates and controls the hot air flow and the temperature of the air heating device (8) to reduce the humidity of the solid particles, and when the temperature detected by a third temperature sensor (14) is lower than 100 ℃, the control device (7) regulates the hot air flow and the temperature of the air heating device (8) to prevent the gas from being condensed in advance in the process before the gas is sent into the condensing tower (15).
2. 2. A tobacco particulate matter leaching nicotine and pyrolysis pretreatment device according to claim 1, characterized in that the liquid outlet of the gas-liquid separation device (16) is connected to the liquid collecting device (17), the gas outlet of the gas-liquid separation device (16) is connected to the exhaust gas treatment device (18), and the condensation tower (15) is connected to the thermostatic condenser (19).

Description

Pretreatment device and method for nicotine leaching and pyrolysis of tobacco particles Technical Field The invention relates to the technical field of raw material production in the tobacco industry, in particular to a tobacco particulate matter nicotine leaching and pyrolysis pretreatment device and method. Background The extraction of aroma substances in tobacco chemistry is always a hot spot and an important point of research, sources of aroma components in tobacco comprise nitrogenous compounds such as alkaloids, carbohydrates, organic acids and other oxygen-containing compounds, and terpene aromatic compounds, and when the aromatic substances are extracted by the traditional pyrolysis and extraction method, the efficiency is low and a large amount of reagents are wasted when the tobacco contains a large amount of nicotine. Disclosure of Invention In order to solve the technical problems, the invention provides a tobacco particulate matter nicotine leaching and pyrolysis pretreatment device and method, which can greatly reduce the content of pyrolysis lampblack alkali in tobacco particulate matters and increase the content ratio of aromatic matters. The invention adopts the technical scheme that: In one aspect, a tobacco particulate matter leaching nicotine and pyrolysis pretreatment device is provided, which comprises a feed liquid heat preservation stirring device, a feed liquid conveying device, an atomization drying mechanism, a gas-solid separation mechanism, a condensation mechanism and a waste gas treatment device; The feed liquid heat preservation stirring device is connected with the atomization drying mechanism through the feed liquid conveying device, the atomization drying mechanism is connected with the gas-solid separation mechanism, a gas outlet of the gas-solid separation mechanism is connected with the condensing mechanism, and a gas outlet of the condensing mechanism is connected with the waste gas treatment device. The atomization drying mechanism comprises a centrifugal spraying device, a drying tower, an air heating device and an anion generating device, wherein the centrifugal spraying device is connected with the feed liquid conveying device, the centrifugal spraying device is connected with the drying tower and is used for atomizing and spraying feed liquid from the feed liquid heat-insulation stirring device into the drying tower, the air heating device is connected with the drying tower through the anion generating device, and anions generated by the anion generating device are sent into the drying tower through hot air from the air heating device. Further, the gas-solid separation mechanism comprises a gas-solid separation device, a particle collecting device and a gas filtering device, wherein a discharge hole of the drying tower is connected with a feed hole of the gas-solid separation device, a solid outlet of the gas-solid separation device is connected with the particle collecting device through the rotary discharge valve, and a gas outlet of the gas-solid separation device is connected with the gas filtering device. Further, the condensing mechanism comprises a condensing tower, a gas-liquid separation device, a liquid collecting device and a constant temperature condenser, wherein an inlet of the condensing tower is connected with the gas filtering device, an outlet of the condensing tower is connected with the gas-liquid separation device, a liquid outlet of the gas-liquid separation device is connected with the liquid collecting device, a gas outlet of the gas-liquid separation device is connected with the waste gas treatment device, and the condensing tower is connected with the constant temperature condenser. Further, a first temperature sensor is arranged on a connecting pipeline between the feed liquid conveying device and the centrifugal spraying device, a second temperature sensor is arranged on a connecting pipeline between the air heating device and the drying tower, and a third temperature sensor is arranged on a connecting pipeline between the gas filtering device and the condensing tower. Further, a humidity sensor is arranged in the particle collecting device. Further, the tobacco particulate matter leaching nicotine and pyrolysis pretreatment device further comprises a control device, wherein the control device is respectively connected with the first temperature sensor, the second temperature sensor, the third temperature sensor and the humidity sensor, so that detection data of each temperature sensor and each humidity sensor can be collected in real time, and the control device is respectively connected with the feed liquid heat preservation stirring device, the feed liquid conveying device, the centrifugal spraying device, the air heating device and the constant-temperature condenser, so that stirring rotation speed of the feed liquid heat preservation stirring device, output flow of the feed liquid conveying device, spray particle size of the centri