Method for improving tobacco shred quality through directional modification
By using low-temperature plasma to directionally modify tobacco shreds, the problem of insufficient tobacco shred quality in traditional drying processes has been solved. This has achieved efficient improvement in the pore structure and filling value of tobacco shreds, reduced breakage rate, simplified the process, and reduced equipment investment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-08
- Publication Date
- 2026-04-03
AI Technical Summary
Traditional tobacco drying processes result in poor pore structure, low filling value, high breakage rate, and residual harmful gases in the tobacco shreds. Existing advanced technologies and equipment require high investment and involve complex processes, making them difficult to apply on a large scale.
Low-temperature plasma directional modification treatment is adopted. The dried tobacco shreds are modified through a low-temperature plasma treatment chamber and a multi-stage plasma jet module. The plasma density is controlled within a specific range, the temperature is lower than the carbonization temperature of the tobacco shreds, the processing time is short, and the resting time is adjustable.
It significantly reduces tar release, increases the specific surface area of tobacco shreds, improves the yield and filling value, reduces the breakage rate, and enhances the quality of tobacco shreds. The process is simple and requires low investment.
Smart Images
Figure CN121774244A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of tobacco processing technology, specifically to a method for targeted modification to improve the quality of tobacco shreds. Background Technology
[0002] Traditional tobacco drying processes, such as drum drying and airflow drying, can effectively reduce the moisture content of tobacco shreds, but they also have problems such as poor pore structure, low filling value, high breakage rate, and residual harmful gases. Due to the above defects in tobacco shreds, the quality of existing tobacco shreds is poor. In recent years, although advanced technologies such as supercritical fluid technology and nano-coating technology have been proposed, these technologies have limitations such as high equipment investment and complex processes, making it difficult to apply them on a large scale. Summary of the Invention
[0003] The purpose of this application is to provide a method for targeted modification to improve the quality of tobacco shreds, so as to overcome the defects caused by the prior art.
[0004] To achieve the above objectives, this application employs the following technical solution: This application discloses a method for targeted modification to improve the quality of tobacco shreds, which includes: The tobacco shreds to be processed are dried to ensure that the moisture content of the dried tobacco shreds is between 11% and 13%. After the dried tobacco shreds are cooled, they undergo low-temperature plasma directional modification treatment to obtain the processed tobacco shreds.
[0005] Further solutions in this application, The low-temperature plasma directional modification treatment is achieved through a low-temperature plasma treatment chamber. During the treatment process, a multi-stage plasma jet module and an airflow distribution system are used to uniformly spray the plasma onto the surface of the dried tobacco.
[0006] In a further embodiment of this application, the temperature of the low-temperature plasma pretreatment is lower than the temperature of tobacco carbonization.
[0007] In a further embodiment, the rated power of the low-temperature plasma treatment chamber during operation does not exceed 20kW; and the processing time does not exceed 90 seconds.
[0008] A further step is to include the low-temperature plasma directional modification treatment; The controller sets the plasma density range between the first and second densities; during the modification process, the plasma density is maintained between the first and second densities.
[0009] In a further embodiment of this application, the drying process is carried out by a drum or thin-plate drying machine.
[0010] In a further embodiment of this application, the moisture content of the dried tobacco shreds is 12%.
[0011] In a further embodiment of this application, the dried tobacco shreds are cooled down and then subjected to low-temperature plasma directional modification treatment before being left to stand for 1 to 24 hours.
[0012] The beneficial effects of this application are as follows: In this application, the tobacco shreds are dried and then subjected to low-temperature plasma directional modification treatment. The active components in the plasma (such as O and OH free radicals) can oxidize and decompose some irritating substances such as ammonia, cyanide, and volatile aldehydes, significantly reducing tar release and achieving a dual tar reduction mechanism. The surface is slightly etched, increasing roughness and specific surface area, providing more sites for moisture adsorption. This greatly reduces tobacco shred breakage during the rolling process and improves the yield. The tobacco shred expansion rate is increased, and the filling value is significantly increased. The treatment process using low-temperature plasma is simple and has low investment costs. Attached Figure Description
[0013] Figure 1 This is a flowchart illustrating the method for targeted modification to improve the quality of tobacco shreds in the embodiments of this application. Detailed Implementation
[0014] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use.
[0015] like Figure 1 As shown, this application discloses a method for directional modification to improve the quality of tobacco shreds, which includes drying the tobacco shreds to be processed to ensure that the moisture content of the dried tobacco shreds is between 11% and 13%; cooling the dried tobacco shreds and then performing low-temperature plasma directional modification treatment to obtain the processed tobacco shreds.
[0016] The low-temperature plasma directional modification treatment is achieved through a low-temperature plasma treatment chamber. During the treatment, a multi-stage plasma jet module and an airflow distribution system are used to uniformly spray the plasma onto the surface of the dried tobacco. It is worth noting that the temperature of the low-temperature plasma pretreatment is lower than the temperature of the tobacco carbonization.
[0017] The rated power of the low-temperature plasma treatment chamber during operation shall not exceed 20kW; the treatment time shall not exceed 90 seconds.
[0018] In addition, in the low-temperature plasma directional modification treatment; The controller sets the plasma density range between the first and second densities; during the modification process, the plasma density is maintained between the first and second densities; this density range is specifically set to 10. 15 ~ 10 17 m -3 .
[0019] During the pretreatment of tobacco shreds, namely the drying process, the shreds are dried using a drum or thin plate drying machine; the moisture content of the dried tobacco shreds is 12%.
[0020] In a further design, the dried tobacco shreds are cooled down and then subjected to low-temperature plasma directional modification treatment before being left to stand for 1 to 24 hours.
[0021] Comparative Example Traditional tobacco shreds are dried using equipment to reduce their moisture content; they are then shredded. Example 1
[0022] The tobacco shreds to be processed are dried to ensure a moisture content of 11%. After cooling, the dried tobacco shreds undergo low-temperature plasma directional modification treatment to obtain the processed tobacco shreds. The low-temperature plasma directional modification treatment is achieved through a low-temperature plasma treatment chamber. During the treatment, a multi-stage plasma jet module and an airflow uniform distribution system are used to uniformly spray plasma onto the surface of the dried tobacco shreds. It is worth noting that the temperature of the low-temperature plasma pretreatment is lower than the carbonization temperature of the tobacco shreds. After cooling and undergoing low-temperature plasma directional modification treatment, the dried tobacco shreds are then left to stand for 2 hours. The low-temperature plasma treatment chamber has a rated power of 5kW and a processing time of 15 seconds during operation.
[0023] In addition, during the low-temperature plasma directional modification treatment, the controller sets the plasma density range, specifically set to 10. 15 ~ 10 17 m -3 During the modification process, ensure that the plasma density is within the set plasma density range. Example 2
[0024] The tobacco shreds to be processed are dried to ensure that the moisture content of the dried tobacco shreds is 12%. After the dried tobacco shreds are cooled, they are subjected to low-temperature plasma directional modification treatment to obtain the processed tobacco shreds. The low-temperature plasma directional modification treatment is achieved through a low-temperature plasma treatment chamber. During the treatment, a multi-stage plasma jet module and an airflow uniform distribution system are used to uniformly spray the plasma onto the surface of the dried tobacco shreds. It is worth noting that the temperature of the low-temperature plasma pretreatment is lower than the temperature of tobacco charring. After the dried tobacco shreds are cooled and subjected to low-temperature plasma directional modification treatment, they are then left to stand for 5 hours.
[0025] The low-temperature plasma treatment chamber has a rated power of 10kW and a processing time of 25 seconds during operation.
[0026] In addition, during the low-temperature plasma directional modification treatment, the controller sets the plasma density range, specifically set to 10. 15 ~ 10 17 m -3 During the modification process, ensure that the plasma density is within the set plasma density range. Example 3
[0027] The tobacco shreds to be processed are dried to ensure that the moisture content of the dried tobacco shreds is 13%. After the dried tobacco shreds are cooled, they are subjected to low-temperature plasma directional modification treatment to obtain the processed tobacco shreds. The low-temperature plasma directional modification treatment is achieved through a low-temperature plasma treatment chamber. During the treatment, a multi-stage plasma jet module and an airflow uniform distribution system are used to uniformly spray plasma onto the surface of the dried tobacco shreds. It is worth noting that the temperature of the low-temperature plasma pretreatment is lower than the temperature of tobacco charring. After the dried tobacco shreds are cooled and subjected to low-temperature plasma directional modification treatment, they are then left to stand for 10 hours.
[0028] The rated power of the low-temperature plasma treatment chamber during operation is 15kW; the treatment time is 45 seconds.
[0029] In addition, during the low-temperature plasma directional modification treatment, the controller sets the plasma density range, specifically set to 10. 15 ~ 10 17 m -3 During the modification process, ensure that the plasma density is within the set plasma density range. Example 4
[0030] The tobacco shreds to be processed are dried to ensure that the moisture content of the dried tobacco shreds is 13%. After the dried tobacco shreds are cooled, they are subjected to low-temperature plasma directional modification treatment to obtain the processed tobacco shreds. The low-temperature plasma directional modification treatment is achieved through a low-temperature plasma treatment chamber. During the treatment process, a multi-stage plasma jet module and an airflow uniform distribution system are used to uniformly spray plasma onto the surface of the dried tobacco shreds. It is worth noting that the temperature of the low-temperature plasma pretreatment is lower than the temperature of tobacco charring. After the dried tobacco shreds are cooled and subjected to low-temperature plasma directional modification treatment, they are then left to stand for 24 hours.
[0031] The rated power of the low-temperature plasma treatment chamber during operation is 20kW; the treatment time is 90 seconds.
[0032] In addition, during the low-temperature plasma directional modification treatment, the controller sets the plasma density range, specifically set to 10. 15 ~ 10 17 m -3 During the modification process, ensure that the plasma density is within the set plasma density range.
[0033] Based on the above embodiments and comparative examples, the relevant performance values of the tobacco shreds are shown in Table 1 above, such as filling value, broken shred rate, tar release, and sensory score.
[0034] Table 1
[0035] The process employs a multi-stage plasma injection module and an airflow distribution system to ensure uniform plasma spraying onto the tobacco surface, and an online plasma density monitoring system monitors the plasma density in real time. The treated tobacco quality is significantly improved, with a filling value increase of over 15%, a broken tobacco rate reduced to below 1.0%, tar release reduced by over 20%, and a sensory score improved to "good" or above.
[0036] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, 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. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.
[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.
Claims
1. A method for targeted modification to improve the quality of tobacco shreds, characterized in that, include The tobacco shreds to be processed are dried to ensure that the moisture content of the dried tobacco shreds is between 11% and 13%. After the dried tobacco shreds are cooled, they undergo low-temperature plasma directional modification treatment to obtain the processed tobacco shreds.
2. The method for targeted modification to improve the quality of tobacco shreds according to claim 1, characterized in that, The low-temperature plasma directional modification treatment is achieved through a low-temperature plasma treatment chamber. During the treatment process, a multi-stage plasma jet module and an airflow distribution system are used to uniformly spray the plasma onto the surface of the dried tobacco.
3. The method for targeted modification to improve the quality of tobacco shreds according to claim 1, characterized in that, The temperature of low-temperature plasma pretreatment is lower than the temperature of tobacco carbonization.
4. The method for targeted modification to improve the quality of tobacco shreds according to claim 2, characterized in that, The rated power of the low-temperature plasma treatment chamber during operation shall not exceed 20kW; the processing time shall not exceed 90 seconds.
5. The method for targeted modification to improve the quality of tobacco shreds according to claim 2, characterized in that, In the aforementioned low-temperature plasma directional modification treatment; The controller sets the plasma density range between the first and second densities; during the modification process, the plasma density is maintained between the first and second densities.
6. The method for targeted modification to improve the quality of tobacco shreds according to claim 1, characterized in that, The drying process is carried out by a drum or thin-plate drying machine.
7. The method for targeted modification to improve the quality of tobacco shreds according to claim 1, characterized in that, The moisture content of the dried tobacco shreds is 12%.
8. The method for targeted modification to improve the quality of tobacco shreds according to claim 1, characterized in that, After the dried tobacco is cooled, it undergoes low-temperature plasma directional modification treatment and is then left to stand for 1 to 24 hours.