CN101393099A - Continuous measurement method for tobacco moisture percentage and apparatus thereof - Google Patents
Continuous measurement method for tobacco moisture percentage and apparatus thereof Download PDFInfo
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- CN101393099A CN101393099A CNA2008102306552A CN200810230655A CN101393099A CN 101393099 A CN101393099 A CN 101393099A CN A2008102306552 A CNA2008102306552 A CN A2008102306552A CN 200810230655 A CN200810230655 A CN 200810230655A CN 101393099 A CN101393099 A CN 101393099A
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Abstract
The invention relates to a method and a device for continuously measuring the moisture content of tobacco. The method is characterized by comprising the following steps: the initial moisture content of tobacco shreds is determined; the weight of the tobacco shreds is continuously measured under the environment of constant temperature and constant humidity; measured values are transmitted to a data analysis module which automatically processes the initial moisture content and obtained data, so as to form data points of the instant moisture content of a series of tobacco shreds with reference to the time; and a curve of the instant moisture content of the tobacco shreds with reference to the time is made, and the nuance of the moistening effect of tobacco humectant is compared according to the comparison of the slope coefficient in the earlier stage and the equilibrium moisture content in the late stage of the curve. The device comprises a climatic chamber, wherein the climatic chamber is provided with an air inlet and an air outlet; a weighing machine is arranged inside a chamber body, and is connected with the data analysis module which is arranged on the outside through a data wire; and the lower part of the chamber body is provided with a liquid storage tank. By utilization of the method and the device, the weight variation of the tobacco shreds can be monitored online in real time, and the difference of the moistening performance of the tobacco humectant can be compared by measurement of the nuance of the moisture content of the tobacco shreds, thereby providing scientific reference for evaluation of the moistening effect.
Description
Technical field
The present invention relates to the method for continuous measuring of tobacco moisture percentage, not only can be used for the use of tobacco moisture percentage continuous measuring device, and can be used for the measurement of other similar material equilibrium moisture contents or moisture, not only easy and simple to handle, and also time saving and energy saving.
Background technology
The humectation of cigarette flavouring strengthens Chinese style cigarette core competitiveness important breakthrough mouth and gordian technique as the interior quality that further improves the Chinese style cigarette, is asserted the great special project of tobacco business science and technology by State Tobacco Monopoly Bureau.At present, each cigarette industry enterprise to cigarette humectation pay close attention to all the more and pay attention to, various fundamental research and the applied researcies relevant with the cigarette humectation are carried out successively.Early-stage Study finds that in the research process of cigarette humectation, the variation of pipe tobacco water percentage concentrates on a few days ago, and monitoring point of water percentage is many more during this, can reflect the situation of change of pipe tobacco water percentage more, also just can embody the nuance of the humectation effect of humectant more.Therefore the problem that faces is how to carry out the test of tobacco moisture percentage uninterruptedly, realizes on-line real time monitoring pipe tobacco water percentage.Method about the tobacco moisture percentage test has a lot, modal be conventional oven for drying (Yi Jinman, Wen Jun. the performance of several humectants is .[J relatively] tobacco science and technology, 2006 (4) 9-12.), be about to spray the sample that adds humectant and put into climatic chamber, sampling regularly, oven dry; Also useful azeotropic distillation method is measured its water percentage (Viart, P.; Flesselles, J., Factorial experiment on thedetermination of the moisture content of a cut tobacco treated with awetting agent.Annales de la Direction des Etudes et de 1 ' Equipement, Service Exploitation Industrielle des Tabacs et des Allumettes, Section2 1970,8, (Sect.1), 165-94.).Measure the used equipment of pipe tobacco water percentage and be generally halogen moisture teller and near infrared moisture analyzer etc., it is longer that these method ubiquities test period, problems such as method of testing is loaded down with trivial details, can not realize the on-line real time monitoring of pipe tobacco water percentage, promptly can not reflect the variation all the time of pipe tobacco water percentage.And in the test process of tobacco humectation performance, the slight change of pipe tobacco water percentage is played crucial effects for the humectation effect of estimating humectant.
Summary of the invention
The method and the device thereof of a kind of suitable tobacco moisture percentage continuous coverage that purpose of the present invention provides at existing problem in the above-mentioned prior art just, variation that can on-line real time monitoring pipe tobacco weight, and then obtain the Changing Pattern of pipe tobacco water percentage, as the important evidence of estimating the tobacco humectant performance.
The objective of the invention is to be achieved through the following technical solutions: the method for tobacco moisture percentage continuous coverage of the present invention is carried out according to the following steps:
The first step: get the pipe tobacco that mixes, measure its initial aqueous rate according to the method for standard GB 5607-85;
Second step: other gets same pipe tobacco, is placed on the weighing utensil, and the weighing utensil is placed in the constant-temperature constant-humidity environment, and its weight of continuous coverage when treating that it changes less than 0.0001～0.01g, finishes to measure;
The 3rd step: the weighing utensil sends to data analysis module with reading according to pre-set time interval (1 second～3600 seconds), data analysis module is handled initial water percentage and the data that obtain automatically, forms the data point of the instant water percentage of a series of pipe tobaccos about the time;
The 4th step: make the instant water percentage of pipe tobacco about the curve of time, according to slope and the contrast of the equilibrium moisture content in later stage, relatively the tobacco humectant humectation effect nuance in early stage of this curve.
Among the present invention, the quantity of the pipe tobacco of getting is 2.00～10.00g in step 1, two.
The inventive method can also be used for the measurement of other similar material equilibrium moisture contents or moisture.
Used measurement mechanism is an adjustable climatic chamber in the inventive method, be provided with a porous barrier in the casing casing is divided into upper and lower chamber, the weighing utensil is placed on the dividing plate, the weighing utensil links to each other with the data analysis module that is located at the outside by data line, lower box is a reservoir, and is provided with tapping valve, is provided with air intake opening more than the liquid level of casing cavity of resorption, top at the casing epicoele is provided with exhausr port, and valve all is housed on air intake opening and the exhausr port.
Described weighing utensil is an electronic balance.Be provided with four weighing utensils in the climatic chamber, promptly can get its mean value, also can be used as spray and add other test of humectation weak effect between the different humectant pipe tobaccos as the measurement of parallel sample.
Climatic chamber can be regulated humidity by sulfuric acid in the reservoir or sodium bromide solution, also can adjust humiture by the mode that the gas that feeds certain humiture toward air intake opening is discharged from exhausr port.
Data analysis module is a data statistic analysis software.
The major advantage of the inventive method: only measure the initial water percentage of pipe tobacco (leaf), middle water percentage can be calculated by initial water percentage and weight change.Can realize the on-line real time monitoring of pipe tobacco water percentage, reflect the variation all the time of pipe tobacco water percentage.This method not only can be used for the use of tobacco moisture percentage continuous measuring device, and can be used for the measurement of other similar material equilibrium moisture contents or moisture, and is easy and simple to handle, time saving and energy saving.
By this method and device, measure the slight change of pipe tobacco water cut, the reference frame of science is provided for the humectation effect of estimating humectant.
Description of drawings
Fig. 1 is the step block diagram of the inventive method.
Fig. 2 is a climatic chamber structural representation of the present invention.
Among the figure: 1-climatic chamber, 2-weighing utensil, 3-data line, 4-data analysis module, 5-reservoir, 6-exhausr port, 7-air intake opening, 8-porous barrier, 9-draining valve, 10, digital display humiture instrument.
Embodiment
Be described further below in conjunction with the device of accompanying drawing the tobacco moisture percentage continuous coverage:
As shown in Figure 2: this measurement mechanism is an adjustable climatic chamber, be provided with a porous barrier in the casing casing is divided into upper and lower chamber, weighing utensil 2 (being electronic balance) is placed on the dividing plate, weighing utensil 2 links to each other with the data analysis module 4 that is located at the outside by data line 3, lower box is a reservoir 5, and is provided with draining valve 9, is provided with air intake opening 7 more than the liquid level of casing cavity of resorption, be provided with exhausr port 6 on the top of casing epicoele, on air intake opening 7 and the exhausr port 6 valve be housed all.
Climatic chamber can be regulated humidity by sulfuric acid in the reservoir 5 or sodium bromide solution, also can adjust humiture by the mode that the gas that feeds certain humiture toward air intake opening 7 is discharged from exhausr port 6.
Data analysis module is a data statistic analysis software.
The present invention is described further measuring method below in conjunction with example:
Example 1, get the pipe tobacco that 2.0000g mixes, measure its initial aqueous rate according to the method for standard GB 5607-85, other gets the 6.0000g pipe tobacco, be placed on the Weighing module, Weighing module is placed on 22 ℃ ± 1 ℃, in relative humidity 60% ± 2% constant temperature and humidity module, a weight was measured at every interval in 300 seconds, simultaneously reading is sent to data analysis module, when treating that it changes less than 0.0001g, finishes to measure.Data analysis module is handled initial water percentage and the data that obtain automatically, forms the data point of the instant water percentage of a series of pipe tobaccos about the time.Make the instant water percentage of pipe tobacco about the curve of time, according to slope and the contrast of the equilibrium moisture content in later stage, relatively the tobacco humectant humectation effect nuance in early stage of this curve.
Example 2, get the pipe tobacco that 4.000g mixes, measure its initial aqueous rate according to the method for standard GB 5607-85, other gets the 8.000g pipe tobacco, be placed on the Weighing module, Weighing module is placed on 30 ℃ ± 1 ℃, in relative humidity 80% ± 2% constant temperature and humidity module, a weight was measured at every interval in 600 seconds, simultaneously reading is sent to data analysis module, when treating that it changes less than 0.001g, finishes to measure.Data analysis module is handled initial water percentage and the data that obtain automatically, forms the data point of the instant water percentage of a series of pipe tobaccos about the time.
Example 3, get the pipe tobacco that 6.00g mixes, measure its initial aqueous rate according to the method for standard GB 5607-85, other gets the 10.00g pipe tobacco, be placed on the electronic balance, electronic balance is placed on 10 ℃ ± 1 ℃, in relative humidity 30% ± 2% constant temperature and humidity module, a weight was measured at every interval in 900 seconds, simultaneously reading is sent to data analysis module, when treating that it changes less than 0.01g, finishes to measure.Data analysis module is handled initial water percentage and the data that obtain automatically, forms the data point of the instant water percentage of a series of pipe tobaccos about the time.
Claims (9)
1, a kind of method of tobacco moisture percentage continuous coverage is characterized in that: this method is carried out according to the following steps:
The first step: get the pipe tobacco that mixes, measure its initial aqueous rate according to the method for standard GB 5607-85;
Second step: other gets same pipe tobacco, is placed on the weighing utensil, and the weighing utensil is placed in the constant-temperature constant-humidity environment, and its weight of continuous coverage when treating that it changes less than 0.0001～0.01g, finishes to measure;
The 3rd step: the weighing utensil sends to data analysis module with reading according to pre-set time interval (1 second～3600 seconds), data analysis module is handled initial water percentage and the data that obtain automatically, forms the data point of the instant water percentage of a series of pipe tobaccos about the time;
The 4th step: make the instant water percentage of pipe tobacco about the curve of time, according to slope and the contrast of the equilibrium moisture content in later stage, relatively the tobacco humectant humectation effect nuance in early stage of this curve.
2, the method for tobacco moisture percentage continuous coverage according to claim 1 is characterized in that: the quantity of the pipe tobacco of getting is 2.00～10.00g in step 1, two.
3, the method for tobacco moisture percentage continuous coverage according to claim 1 is characterized in that: this method can also be used for the measurement of other similar material equilibrium moisture contents or moisture.
4, used continuous measuring device in a kind of claim 1 method, it is characterized in that: this device comprises adjustable climatic chamber (1), being provided with a porous barrier (8) in the casing is divided into casing, cavity of resorption, weighing utensil (2) is placed on the dividing plate, the weighing utensil links to each other with the data analysis module (4) that is located at the outside by data line (3), lower box is reservoir (5), and be provided with tapping valve (9), more than the liquid level of casing cavity of resorption, be provided with air intake opening (7), be provided with exhausr port (6) on the top of casing epicoele, on air intake opening (7) and the exhausr port (6) valve be housed all.
5, continuous measuring device according to claim 4 is characterized in that: the weighing utensil is an electronic balance.
6, continuous measuring device according to claim 4 is characterized in that: be provided with four weighing utensils (2) in the climatic chamber (1).
7, continuous measuring device according to claim 4 is characterized in that: climatic chamber (1) is regulated humidity by sulfuric acid or sodium bromide solution in the reservoir (5).
8, continuous measuring device according to claim 4 is characterized in that: the mode that climatic chamber (1) is discharged from exhausr port (6) by the gas that feeds certain humiture toward air intake opening (7) is regulated humiture.
9, continuous measuring device according to claim 4 is characterized in that: data analysis module (4) is a data statistic analysis software.
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| CN102230871A (en) * | 2011-03-18 | 2011-11-02 | 中国农业科学院烟草研究所 | Method for determining tobacco leaf tissue free water content |
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