Perfuming method, medium and equipment for heating cigarette production line

Abstract

The invention belongs to the technical field of heating cigarette production control, and particularly relates to a heating cigarette production line perfuming method, medium and equipment, according to the perfuming method, the mass percentage of glycerol is used as a dependent variable, temperature and viscosity are used as independent variables, and a binary nonlinear prediction equation of the mass percentage of glycerol in essence is established; a perfuming working parameter table is established, temperature and viscosity working points are selected, a glycerol mass percentage control target value in the essence is determined, an essence density control target value is designed, the actual density of the essence at an application nozzle is obtained, and the error between the actual value and the target value is calculated; and establishing a transfer function between the essence density error and the glycerol volume percentage, and applying the transfer function to a perfuming process of a heating cigarette production line. According to the invention, the actual value can be adjusted in real time according to the design value of the mass percentage of glycerol in the essence, so that the online application stability of glycerol is improved, and the production quality control of heated cigarette products is facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of heated cigarette production control, and in particular relates to a method, medium and equipment for adding flavor to a heated cigarette production line. Background Art

[0002] With the rapid development of new tobacco, heated cigarettes have gradually become a hot spot in product research and development. Heated cigarettes heat the tobacco core material segment through a special heat source, and produce smoke for consumers to inhale in a non-combustion state. The release characteristics of the smoke determine the sensory quality of the product. At present, the tobacco core materials used to produce smoke are mostly two types: orderly filled thick pulp method reconstituted tobacco leaves and disorderly filled papermaking method reconstituted tobacco leaves. In recent years, in order to enrich the tobacco flavor characteristics of heated cigarette products, cigarette companies have begun to use natural tobacco leaf raw materials as heated cigarette core materials.

[0003] In heated cigarette products, glycerol is the main smoking agent with many characteristics, such as moisturizing, high activity, anti-oxidation and low-temperature smoking. Glycerol can carry tobacco flavor components at relatively low temperatures (below 300°C), which is crucial to the quality of heated cigarette products. However, due to the extremely high viscosity of glycerol, it is very difficult to apply it to natural tobacco leaf raw materials. At present, the method of applying glycerol in the flavoring process of the heated cigarette production line mainly relies on experience. The viscosity of the flavor is reduced by reducing the mass percentage of glycerol, and then the flavor is applied to the tobacco in a certain proportion. However, in this process, there is a lack of stability control over the mass percentage of the flavor, and problems such as excessive dilution or excessive viscosity of the glycerol flavor are prone to occur. This situation will cause large fluctuations in the particle size of the glycerol droplets, affecting the accuracy of application and failing to meet the quality control requirements of heated cigarette production. Summary of the invention

[0004] The object of the present invention is to provide a method, medium and equipment for adding flavor to a heated cigarette production line, which can adjust the actual value in real time according to the designed value of the mass percentage of glycerol in the flavor to solve the problems existing in the above-mentioned background technology.

[0005] To achieve the above objectives, this application is implemented through the following technical solutions:

[0006] A method for adding flavor to a heated cigarette production line comprises the following steps:

[0007] S1. Taking the mass percentage of glycerol as the dependent variable and temperature and viscosity as the independent variables, a binary nonlinear prediction equation for the mass percentage of glycerol in flavors was established;

[0008] S2. According to the prediction equation in step S1, a flavoring working parameter table is established, and the temperature and viscosity working points are selected according to the working table to determine the control target value of the mass percentage fraction of glycerol in the flavor;

[0009] S3. According to the target value of glycerol mass percentage, the target value of flavor density is designed, the actual density of the flavor at the application nozzle is obtained, and the error between the actual value and the target value is calculated;

[0010] S4. Obtain the volume percentage of glycerol, establish a transfer function between the flavor density error and the volume percentage of glycerol, and establish an online control system for flavor density, which is applied to the flavoring process of the heated cigarette production line.

[0011] Furthermore, in step S1, the nonlinear prediction equation of the glycerol solution is a binary differential equation of its mass percentage with respect to viscosity and temperature:

[0012]

[0013] Where M is the predicted value of the mass percentage of glycerol; k1-k 14 are the fitting parameters of the nonlinear prediction equation; x is the viscosity of glycerol flavor; y is the temperature of glycerol flavor; m is 0 or 3, n is 0 or 2, p is 0 or 3, and q is 0 or 2.

[0014] Furthermore, in step S2, the flavoring working parameters include the viscosity of the glycerol solution, the mass percentage of glycerol and the temperature. The temperature control range is 0°C to 30°C, the viscosity working range is 0.9cP to 3900cP, and the mass percentage of glycerol working range is 0% to 100%.

[0015] Further, in step S3, the density control target value of the flavor is determined according to the glycerol mass percentage control target value:

[0016]

[0017] Among them, ρ is the density of flavor; ρ1 is the density of glycerol; ρ2 is the density of solvent; M is the predicted value of the mass percentage of glycerol.

[0018] Further, in step S4, the input of the system is the error U between the control target value and the actual value of the glycerol flavor density. (S) , the output is the volume percentage of propylene glycol V (S) , thus obtaining the transfer function G between the flavor density error and the volume percentage of glycerol (S) :

[0019] Where S is the complex frequency of the transfer function.

[0020] A medium having a program stored thereon, wherein the program executes any one of the above-mentioned methods for adding flavor to a heated cigarette production line on a processor.

[0021] A device comprises a processor and a memory, wherein the memory is used to store programs, and the processor executes the programs stored in the memory, so that the device executes any one of the above-mentioned methods for adding flavor to a heated cigarette production line.

[0022] The beneficial effects of the present invention are:

[0023] 1) The present invention can adjust the actual value in real time according to the designed value of the mass percentage of glycerol in the flavor, thereby improving the stability of online application of glycerol, which is beneficial to the production quality control of heated cigarette products.

[0024] 2) By establishing a prediction equation for the mass percentage of glycerol and a table of flavoring working parameters, the temperature and viscosity working points can be accurately selected, the control target value of the mass percentage of glycerol in the flavor can be determined, and the precise application of the flavor can be achieved.

[0025] 3) The method of adding flavor to a heated cigarette production line is executed on a processor using a computer program, which can automatically control and adjust the working parameters of the propylene glycol solution adding flavor, thereby improving production efficiency and reducing human errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The figure is a flow chart of the method of the present invention.

[0027] Figure 2 It is a surface graph of glycerol flavor temperature between 0% and 30%, viscosity in the range of 0.9cP to 38.8cP and the corresponding glycerol mass percentage fraction. Note: The blue dots are the predicted values ​​of the glycerol mass percentage fraction.

[0028] Figure 3 The actual value control curve of the flavoring online control system when the temperature of the glycerol flavor is 20°C, the viscosity is 22.9cP, and the target value of the glycerol mass percentage is 70%.

[0029] Figure 4 It is a surface graph of glycerol flavor temperature between 0% and 30%, viscosity in the range of 38.8cP to 3900cP and the corresponding glycerol mass percentage fraction. Note: The blue dots are the predicted values ​​of the glycerol mass percentage fraction.

[0030] Figure 5 The actual value control curve of the flavoring online control system when the temperature of the glycerol flavor is 25°C, the viscosity is 174.52cP, and the target value of the glycerol mass percentage is 90%.

[0031] Figure 6 This is a block diagram of the glycerol flavor density online control system of Example 1.

[0032] Figure 7This is a block diagram of the glycerol flavor density online control system of Example 2. DETAILED DESCRIPTION

[0033] The technical solution of the present invention is described in detail below in conjunction with embodiments. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solution of the present invention, and cannot be construed as limiting the technical solution of the present invention.

[0034] Example 1

[0035] A method, medium and equipment for adding flavor to a heated cigarette production line, such as Figure 1 As shown, the method comprises the following steps:

[0036] Step 1) Using the mass percentage of glycerol as the dependent variable and temperature and viscosity as the independent variables, a binary nonlinear prediction equation for the mass percentage of glycerol in the flavor is established, such as Figure 2 When the flavor temperature is between 0% and 30% and the viscosity is between 0.9cP and 38.8cP, the mass percentage of glycerol in the flavor conforms to the following equation:

[0037]

[0038] Wherein, x is the viscosity of the flavor; y is the temperature of the flavor; and M is the temperature predicted value of the mass percentage of glycerol in the flavor.

[0039] Step 2) According to the binary nonlinear prediction equation of the mass percentage of glycerol, a flavoring working parameter table is established, as shown in Table 1. It can be calculated from Table 1 that the correlation coefficient between the predicted value and the actual value is 0.999957. Table 1 Actual and predicted values ​​of the mass percentage of glycerol when the temperature of glycerol flavor is between 0% and 30% and the viscosity is in the range of 0.9 cP to 38.8 cP.

[0040] Table 1

[0041]

[0042] Table 1

[0043]

[0044] Table 1

[0045]

[0046] The working point of the flavor during the production of heated cigarettes was selected as follows: temperature 20°C, viscosity 22.9 cP, and the target value of the mass percentage of glycerol in the flavor was determined to be 70%.

[0047] Step 3) According to the target value of glycerol mass percentage, the target value of flavor density control ρ is determined to be 1.169 g / cm 3 Use an online density meter to obtain the actual density of the fragrance at the application nozzle in real time.

[0048] Step 4) The input of the system is the error U between the target value and the actual value of the glycerol flavor density control (S) , the output is the volume percentage of propylene glycol V (S) , so the transfer function G between the flavor density error and the volume percentage of glycerol is obtained (S) :

[0049] Where S is the complex frequency of the transfer function.

[0050] Establish an online control system for glycerol flavor density, such as Figure 6 As shown in FIG. 1 , when the temperature of the glycerol flavor is 20°C, the viscosity is 22.9 cP, and the control target value of the glycerol mass percentage is 70%, the actual value curve of the glycerol mass percentage in the flavor is as follows: Figure 3 As shown. In the process of heating cigarette flavoring, the actual value of the glycerol mass percentage of the flavor at the nozzle can reach the control target value within 10 seconds, realizing the continuous control of the glycerol mass percentage at the nozzle.

[0051] Example 2

[0052] A method, medium and equipment for adding flavor to a heated cigarette production line, such as Figure 1 As shown, the method comprises the following steps:

[0053] Step 1) Using the mass percentage of glycerol as the dependent variable and temperature and viscosity as the independent variables, a binary nonlinear prediction equation for the mass percentage of glycerol in the flavor is established, such as Figure 4 When the flavor temperature is between 0% and 30% and the viscosity is between 38.8cP and 3900cP, the mass percentage of glycerol in the flavor conforms to the following equation:

[0054]

[0055] Wherein, x is the viscosity of the flavor; y is the temperature of the flavor; and M is the temperature predicted value of the mass percentage of glycerol in the flavor.

[0056] Step 2) According to the binary nonlinear prediction equation of the mass percentage of glycerol, a flavoring working parameter table is established, as shown in Table 2. It can be calculated from Table 2 that the correlation coefficient between the predicted value and the actual value is 0.999075. Table 1 Actual and predicted values ​​of the mass percentage of glycerol when the temperature of glycerol flavor is between 0% and 30% and the viscosity is within the range of 38.8cP to 3900cP.

[0057] Table 2

[0058]

[0059] Table 2

[0060]

[0061] The working point of the flavor during the production of heated cigarettes was selected as 25°C and the viscosity was 174.5 cP. The control target value of the mass percentage of glycerol in the flavor was determined to be 90%.

[0062] Step 3) According to the target value of glycerol mass percentage, the target value of flavor density control ρ is determined to be 1.226 g / cm 3 Use an online density meter to obtain the actual density of the fragrance at the application nozzle in real time.

[0063] Step 4) The input of the system is the error U between the target value and the actual value of the glycerol flavor density control (S) , the output is the volume percentage of propylene glycol V (S) , so the transfer function G between the flavor density error and the volume percentage of glycerol is obtained (S) :

[0064] Where S is the complex frequency of the transfer function.

[0065] Establish an online control system for glycerol flavor density, such as Figure 7 As shown in FIG. 1 , when the temperature of the glycerol flavor is 20°C, the viscosity is 22.9 cP, and the control target value of the glycerol mass percentage is 70%, the actual value curve of the glycerol mass percentage in the flavor is as follows: Figure 5 As shown. In the process of heating cigarette flavoring, the actual value of the glycerol mass percentage of the flavor at the nozzle can reach the control target value within 10 seconds, realizing the continuous control of the glycerol mass percentage at the nozzle.

[0066] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for adding flavor to a heated cigarette production line, characterized in that: The following steps are involved: S1. Taking the mass percentage of glycerol as the dependent variable and temperature and viscosity as the independent variables, a binary nonlinear prediction equation for the mass percentage of glycerol in flavors was established; S2. According to the prediction equation in step S1, a flavoring working parameter table is established, and the temperature and viscosity working points are selected according to the working table to determine the control target value of the mass percentage of glycerol in the flavor; S3. According to the target value of glycerol mass percentage, the target value of flavor density is designed, the actual density of the flavor at the application nozzle is obtained, and the error between the actual value and the target value is calculated; S4. Obtain the volume percentage of glycerol, establish a transfer function between the flavor density error and the volume percentage of glycerol, and establish an online control system for flavor density, which is applied to the flavoring process of the heated cigarette production line.

2. The method for adding flavor to a heated cigarette production line according to claim 1, characterized in that: In step S1, the nonlinear prediction equation of the glycerol solution is a binary differential equation of its mass percentage with respect to viscosity and temperature: ， Where M is the predicted value of the mass percentage of glycerol; k1-k 14 are the fitting parameters of the nonlinear prediction equation; x is the viscosity of glycerol flavor; y is the temperature of glycerol flavor; m is 0 or 3, n is 0 or 2, p is 0 or 3, and q is 0 or 2.

3. The method for adding flavor to a heated cigarette production line according to claim 1, characterized in that: In step S2, the flavoring working parameters include the viscosity of the glycerol solution, the mass percentage of glycerol and the temperature. The temperature control range is 0°C to 30°C, the viscosity working range is 0.9cP to 3900cP, and the mass percentage of glycerol working range is 0% to 100%.

4. The method for adding flavor to a heated cigarette production line according to claim 1, characterized in that: In step S3, the density control target value of the flavor is determined according to the glycerol mass percentage control target value: ， Among them, ρ is the density of flavor; ρ1 is the density of glycerol; ρ2 is the density of solvent; M is the predicted value of the mass percentage of glycerol.

5. The method for adding flavor to a heated cigarette production line according to claim 1, characterized in that: In step S4, the input of the system is the error U between the target value and the actual value of the glycerol flavor density control. (S) , the output is the volume percentage of propylene glycol V (S) , thus obtaining the transfer function G between the flavor density error and the volume percentage of glycerol (S) : , where S is the complex frequency of the transfer function.

6. A medium having a program stored thereon, characterized in that: The program executes the method for adding flavor to a heated cigarette production line according to any one of claims 1 to 5 on a processor.

7. A device comprising a processor and a memory, wherein the memory is used to store a program, and the processor executes the program stored in the memory, characterized in that: The device is configured to execute the method for adding flavor to a heated cigarette production line according to any one of claims 1 to 5.

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