Online monitoring method and equipment for tobacco flavoring effect of cigarette

Abstract

The present invention relates to the technical field of cigarette manufacturing, and provides an online monitoring method and device for the effect of adding fragrance liquid and the loss of tobacco in the process of flavoring cigarette shreds. The method monitors the propylene glycol content in the exhaust port of the flavoring mixing tank and uses high-temperature gas Raman spectroscopy detection technology to achieve real-time monitoring of the degree of mixing and loss of fragrance liquid and tobacco shreds. The device includes a gas pretreatment system, a high-temperature gas Raman spectroscopy detection system and a mixing feedback adjustment system, which can intelligently adjust the mixing process flow to improve the uniformity of flavoring and the quality of cigarettes. The present invention has the advantages of simple operation, accurate detection, real-time feedback, etc., and is suitable for the cigarette manufacturing industry, which helps to improve production efficiency and product quality.

Description

Technical Field

[0001] The present invention relates to the field of material detection, and in particular to an online monitoring method and device for the effect of adding fragrance liquid in the process of tobacco flavoring of cigarettes. The method and device can monitor the loss and mixing effect of fragrance liquid online without affecting the tobacco flavoring process. The device has high integration and is easy to install and detect online. Background Art

[0002] During the processing of cigarette tobacco, after adding liquid feed to improve the physical properties of tobacco such as moisturizing, flexibility, flammability and mildew resistance, the aroma of tobacco is adjusted by adding fragrance liquid containing ingredients such as flavors and spices, reducing irritation, improving aftertaste, and making the smoke soft and delicate. However, the composition of fragrance liquid is very complex, and the supplier of fragrance liquid purchased by cigarette factories cannot know the specific composition of the fragrance liquid due to confidentiality.

[0003] At present, there is no effective online monitoring method for the effective adsorption of flavoring liquid by tobacco during the tobacco flavoring process, and the loss of flavoring liquid cannot be monitored online.

[0004] Gas chromatography is a fast, simple, relatively cheap and reproducible analytical method that can analyze components in various matrices, such as petroleum and petrochemical products, environmental pollutants, drugs, foods, etc., and because of the inherent high separation efficiency of gas chromatography and the ability to be connected to various sensitive and selective detectors, gas chromatographs equipped with various detectors have become indispensable tools for component identification and analysis in various fields. However, in the process of online tobacco flavoring, due to the complexity of the ingredients of the fragrance liquid, general detection technology can qualitatively analyze that the fragrance liquid contains a large number of amino, hydroxyl, benzene ring skeleton, phenol ether and alcohol groups, but because the content of each component is very low, it is difficult to quantitatively analyze the specific content of a specific group component. Therefore, for online tobacco flavoring detection, it is not easy to achieve online using gas chromatography technology. From the current detection of the effect of adding fragrance liquid in the process of tobacco flavoring at home and abroad, some other detection technologies, like gas chromatography technology, are not easy to achieve online detection and monitoring. Summary of the invention

[0005] There is currently no effective online detection method for the effective adsorption of flavor liquid during the tobacco flavoring process, and the loss of flavor liquid cannot be monitored online. The technical problem that the present invention intends to solve is to provide an online monitoring method and equipment for the effect of flavor liquid addition and loss during the tobacco flavoring process of cigarettes.

[0006] The present invention uses propylene glycol in the fragrance liquid added online to tobacco shreds as an online detection target. Propylene glycol, as an important component of tobacco shred fragrance liquid, can delay the evaporation of tobacco sheets and tobacco shreds, increase the flexibility of tobacco sheets and tobacco shreds, improve color, reduce breakage, and reduce the burning sensation during smoking, thereby improving the smoking quality. At the same time, tobacco shreds themselves do not contain propylene glycol, and can be used as an indicator to evaluate the characteristic index of tobacco shred flavoring uniformity. Therefore, the content of propylene glycol is crucial to the evaluation of tobacco shred flavoring uniformity and the quality of cigarettes. Since propylene glycol is a kind of polyol, it contains a certain number of -OH and has strong near-infrared spectral information, and its content can be analyzed by establishing a near-infrared prediction model.

[0007] The present invention aims at the problem of the mixing degree of fragrance liquid and tobacco in the process of tobacco flavoring, and uses high-temperature Raman spectroscopy detection technology to develop online high-temperature gas Raman spectroscopy detection technology, measure the gas components and aerosol particle content at the exhaust port, determine the type and concentration information of substances discharged during the mixing process of tobacco and fragrance liquid additives, and combine the advantages of optical online detection, impurity control and removal, artificial intelligence, etc. to carry out online monitoring of whether there is propylene glycol at the exhaust port. Propylene glycol has a high boiling point. At the tobacco flavoring processing temperature, propylene glycol is in a liquid state. Monitoring whether the exhaust port of the flavoring mixing tank contains propylene glycol can monitor the mixing level and loss of fragrance liquid and tobacco.

[0008] The method and device for online monitoring the effect of adding fragrance liquid during the flavoring process of cigarette tobacco shreds described in the present invention are as follows: The online detection method is as follows Figure 1 As shown, by monitoring whether the exhaust port of the flavoring mixing tank contains propylene glycol, the mixing level and loss of the flavoring liquid and tobacco are monitored.

[0009] The online monitoring device for the effect of adding fragrance liquid during the perfume processing of the present invention is a high-temperature gas Raman spectrum detection device, which consists of a gas pretreatment system at the gas exhaust port of the mixing tank, a high-temperature gas Raman spectrum detection system and a mixing feedback adjustment system, which are integrated into a set of devices.

[0010] (1) Gas pretreatment system. It consists of modules such as sample gas pipeline, gas impurity filter, gas flow monitor, gas temperature and pressure monitor, etc. The system performs dust removal and other treatments on the sample gas, monitors the flow, temperature and pressure of the sample gas, and ensures that the object being tested is in a gasified state.

[0011] (2) High-temperature gas Raman spectroscopy detection system. It includes a gas measurement chamber and a high-temperature gas infrared Raman spectroscopy detection module. The high-temperature Raman detection technology performs spectral measurement in the measurement chamber. The module consists of a high-temperature Raman probe, a laser source, a spectroscopic optical path system, a photodetector, a signal processing circuit, etc. The spectral range is 200-3900cm -1, excitation wavelength 514-830nm, high temperature Raman probe adopts temperature resistant design, which can directly measure high temperature gas.

[0012] (3) Mixing feedback adjustment system. It uses artificial intelligence to accurately control digitalization, instantly displays online test results, analyzes the binding state between propylene glycol and tobacco in the fragrance liquid from complex and changing Raman spectral data, and intelligently adjusts the mixing process. Beneficial Effects

[0013] The present invention solves the problem of an online monitoring method and device for the effect of adding fragrance liquid during the process of flavoring tobacco shreds, and can monitor the loss of propylene glycol in the fragrance liquid online without affecting the online flavoring production of tobacco shreds, and then analyze the effect of adding the propylene glycol. The device has a high degree of integration and is easy to install and detect online.

[0014] The present invention uses high-temperature gas Raman spectroscopy online monitoring technology as a means, and based on propylene glycol component concentration information, establishes a propylene glycol spectral data analysis system, which can analyze the correlation between the mixing degree of tobacco and fragrance liquid and the spectral data, and analyze the influence of propylene glycol components and mixing processes on the mixing degree. By online measurement, the propylene glycol loss under different process and raw material conditions is clarified, a propylene glycol mixing degree database under different processes and raw material ratios is established, and the process technology and raw material ratio are optimized to provide information support to ensure that the flavoring process meets production needs.

[0015] According to whether there is propylene glycol at the exhaust port of the mixing tank and the change of its content, the present invention establishes a correlation model between the exhaust, materials and process flow, infers the operating status of the fragrance liquid and tobacco mixing process, and monitors the stability of the mixing process.

[0016] The mixing feedback adjustment system of the present invention is based on the research on the mixing mechanism of the propylene glycol component of the fragrance liquid, combined with the deep learning model, to provide mixing process feedback, analyze the current mixing effect between the fragrance and the tobacco from the complex and changing infrared Raman spectrum data, and intelligently adjust the mixing process flow.

[0017] The online detection method and device of the present invention can monitor the degree of fragrance liquid addition online without affecting the online processing of tobacco flavoring. The device has high integration and is convenient for online installation and detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a schematic diagram of an online monitoring device for cigarette tobacco flavoring. DETAILED DESCRIPTION

[0019] The following examples may enable those skilled in the art to more fully understand the present invention, but are not intended to limit the present invention in any way. Example 1

[0020] The present invention discloses an online monitoring method and device for the effect of adding fragrance liquid during the flavoring process of cigarette shredded tobacco. The device consists of three parts: a gas pretreatment system at the gas exhaust port of a mixing tank, a high-temperature gas Raman spectrum detection system, and a mixing feedback adjustment system.

[0021] (1) Gas pretreatment system. It consists of modules such as sample gas pipeline, gas impurity filter, gas flow monitor, gas temperature and pressure monitor, etc. The system performs dust removal and other treatments on the sample gas, monitors the flow, temperature and pressure of the sample gas, and ensures that the object being tested is in a gasified state.

[0022] (2) High-temperature gas Raman spectroscopy detection system. It includes a gas measurement chamber and a high-temperature gas Raman spectroscopy detection module. The high-temperature Raman detection technology performs spectral measurement in the measurement chamber. The module consists of a high-temperature Raman probe, a laser source, a spectroscopic optical path system, a photodetector, a signal processing circuit, etc. The spectral range is 250-3900cm -1 The excitation wavelength is 532nm. The high-temperature Raman probe adopts high-temperature alloy, sapphire optical discrete components, micro-nitrogen atmosphere protection and other temperature-resistant designs, which can directly measure high-temperature gases.

[0023] (3) Mixing feedback adjustment system. It uses artificial intelligence to accurately control digitalization, instantly displays online test results, analyzes the binding state between propylene glycol and tobacco in the fragrance liquid from complex and changing Raman spectral data, and intelligently adjusts the mixing process. Example 2

[0024] The present invention discloses an online monitoring method and device for the effect of adding fragrance liquid during the flavoring process of cigarette shredded tobacco. The device consists of three parts: a gas pretreatment system at the gas exhaust port of a mixing tank, a high-temperature gas Raman spectrum detection system, and a mixing feedback adjustment system.

[0025] (1) Gas pretreatment system. It consists of modules such as sample gas pipeline, gas impurity filter, gas flow monitor, gas temperature and pressure monitor, etc. The system performs dust removal and other treatments on the sample gas, monitors the flow, temperature and pressure of the sample gas, and ensures that the object being tested is in a gasified state.

[0026] (2) High-temperature gas Raman spectroscopy detection system. It includes a gas measurement chamber and a high-temperature gas Raman spectroscopy detection module. The high-temperature Raman detection technology performs spectral measurement in the measurement chamber. The module consists of a high-temperature Raman probe, a laser source, a spectroscopic optical path system, a photodetector, a signal processing circuit, etc. The spectral range is 200-3000cm -1 The excitation wavelength is 632nm. The high-temperature Raman probe adopts anodized aluminum, sapphire optical discrete components, micro-nitrogen atmosphere protection and other temperature-resistant designs, which can directly measure high-temperature gases.

[0027] (3) Mixing feedback adjustment system. It uses artificial intelligence to accurately control digitalization, instantly displays online test results, analyzes the binding state between propylene glycol and tobacco in the fragrance liquid from complex and changing Raman spectral data, and intelligently adjusts the mixing process. Example 3

[0028] The present invention discloses an online monitoring method and device for the effect of adding fragrance liquid during the flavoring process of cigarette shredded tobacco. The device consists of three parts: a gas pretreatment system at the gas exhaust port of a mixing tank, a high-temperature gas Raman spectrum detection system, and a mixing feedback adjustment system.

[0029] (1) Gas pretreatment system. It consists of modules such as sample gas pipeline, gas impurity filter, gas flow monitor, gas temperature and pressure monitor, etc. The system performs dust removal and other treatments on the sample gas, monitors the flow, temperature and pressure of the sample gas, and ensures that the object being tested is in a gasified state.

[0030] (2) High-temperature gas Raman spectroscopy detection system. It includes a gas measurement chamber and a high-temperature gas Raman spectroscopy detection module. The high-temperature Raman detection technology performs spectral measurement in the measurement chamber. The module consists of a high-temperature Raman probe, a laser source, a spectroscopic optical path system, a photodetector, a signal processing circuit, etc. The spectral range is 1500-3000cm -1 The excitation wavelength is 785nm. The high-temperature Raman probe adopts a stainless steel cylindrical shape, sapphire optical discrete components, micro-nitrogen atmosphere protection and other temperature-resistant designs, which can directly measure high-temperature gases.

[0031] (3) Mixing feedback adjustment system. It uses artificial intelligence to accurately control digitalization, instantly displays online test results, analyzes the binding state between propylene glycol and tobacco in the fragrance liquid from complex and changing Raman spectral data, and intelligently adjusts the mixing process.

Claims

1. A method for online monitoring of the effect of adding fragrance liquid during the process of flavoring shredded tobacco, characterized in that: The following steps are involved: a) Detect whether propylene glycol is present by monitoring the exhaust port of the flavoring mixing tank; b) Determine the mixing level of the flavor liquid and tobacco according to the propylene glycol content at the exhaust port; c) Monitor the loss of the flavor liquid according to the change of propylene glycol content at the exhaust port.

2. The method according to claim 1, wherein the monitoring step adopts high temperature gas Raman spectroscopy detection technology.

3. The method according to claim 1 or 2, wherein the monitoring device comprises: Gas pre-treatment system, used to remove dust from sample gas and monitor flow, temperature and pressure; The high-temperature gas Raman spectroscopy detection system is used to perform spectral measurements on high-temperature gases and analyze the propylene glycol content. The mixing feedback adjustment system uses artificial intelligence technology to intelligently adjust the mixing process based on the results of Raman spectroscopy data analysis.

4. The device according to claim 3, wherein the gas pre-treatment system includes modules such as a sample gas pipeline, a gas impurity filter, a gas flow monitor, and a gas temperature and pressure monitor.

5. The device according to claim 3, wherein the high temperature gas Raman spectrum detection system comprises a gas measurement chamber and a high temperature gas Raman spectrum detection module, and the high temperature gas Raman spectrum detection module comprises a high temperature Raman probe, a laser source, a spectroscopic optical path system, a photodetector, a signal processing circuit, etc.

6. The device according to claim 3, wherein the mixing feedback adjustment system adopts artificial intelligence digital precision control, can instantly display the online detection results, and analyze the binding state between propylene glycol and tobacco in the fragrance liquid from complex and changing Raman spectral data.

7. The method or apparatus according to any one of claims 1 to 6, wherein the detection spectrum range of propylene glycol is 200-3900 cm-1 and the excitation wavelength is 514-830 nm.

8. The device according to any one of claims 1 to 6, which consists of a gas pre-treatment system at the gas exhaust port of the mixing tank, a high-temperature gas Raman spectrum detection system and a mixing feedback adjustment system; (1) Gas pretreatment system: It consists of modules such as sample gas pipeline, gas impurity filter, gas flow monitor, gas temperature and pressure monitor, etc. The system performs dust removal and other treatments on the sample gas, monitors the flow, temperature and pressure of the sample gas, and ensures that the object being tested is in a gasified state; (2) High-temperature gas Raman spectroscopy detection system. It includes a gas measurement chamber and a high-temperature gas Raman spectroscopy detection module. The high-temperature Raman detection technology performs spectral measurement in the measurement chamber. The module consists of a high-temperature Raman probe, a laser source, a spectroscopic optical path system, a photodetector, a signal processing circuit, etc.: Spectral range 250-3900cm -1 , the excitation wavelength is 532nm, and the high-temperature Raman probe adopts high-temperature alloy, sapphire optical discrete components, micro-nitrogen atmosphere protection and other temperature-resistant designs, which can directly measure high-temperature gases; (3) Mixing feedback adjustment system: It uses artificial intelligence to achieve precise digital control, instantly displays online test results, analyzes the binding state between propylene glycol and tobacco in the fragrance liquid from complex and changing Raman spectral data, and intelligently adjusts the mixing process.

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