CN106509974A - Method for judging extraction stop point of tobacco raw materials - Google Patents
Method for judging extraction stop point of tobacco raw materials Download PDFInfo
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- CN106509974A CN106509974A CN201610962261.0A CN201610962261A CN106509974A CN 106509974 A CN106509974 A CN 106509974A CN 201610962261 A CN201610962261 A CN 201610962261A CN 106509974 A CN106509974 A CN 106509974A
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- extraction
- electric conductivity
- extract
- electrical conductivity
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/14—Forming reconstituted tobacco products, e.g. wrapper materials, sheets, imitation leaves, rods, cakes; Forms of such products
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention relates to a method for judging an extraction stop point of tobacco raw materials, and belongs to the technical field of reconstituted tobacco leaf processes. The method comprises the following steps of in a tobacco raw material extraction process, starting from extraction operation, measuring electric conductivity of an extracting solution every 2 minutes; starting from the fourth minute of the extraction operation, calculating a change rate of the electric conductivity according to a formula defined in the specification, wherein CR is the change rate of the electric conductivity, ECi is the electric conductivity of the extracting solution at the ith minute, ECi+2 is the electric conductivity of the extracting solution at the (i+2)th minute, and ECi+4 is the electric conductivity of the extracting solution at the (i+4)th minute; and when CR is less than or equal to 0.5%, judging that the extraction stop point is reached. According to the method, the extraction stop point can be judged in time by measuring the change of the electric conductivity of the extracting solution according to the change of the raw materials and extraction conditions, so that the running time of equipment is shortened, the extraction conditions are optimized, and the production cost is reduced.
Description
Technical field
The invention belongs to reconstituted tobacco technology field, is related to the decision method that a kind of tobacco material extracts terminal.
Background technology
Produce reality and literature survey result show, extract research with regard to tobacco material and focus primarily upon exploration impact offal
The influence factor and the condition as how optimum that tobacco leaf is extracted is extracted so as to improve recovery rate.Recovery rate is calculated and is typically adopted
Use solid content gravimetric method, traditional use residue weight method：(residue dry matter weight/extraction raw material dry matter weight after 1- extractions
Amount) × 100% determining tobacco material recovery rate, cannot collect in actual production line and all extract residues and detected, so
Actually cannot used well.Application publication number has invented a kind of paper process again for the patent of invention of CN105105311A
The assay method of raw tobacco material recovery rate is made, the solid content D of raw material is extracted in this invention using oven method measuring, is calculated and was extracted
The ratio N of the solvent in journey and Solute mass, the tobacco material residue after extraction carry out separation of solid and liquid, with oven method measuring solid-liquid point
From the solid content D ' of rear residue, fluid solid content C is extracted with oven method measuring, so as to according to formula
Calculate the recovery rate of tobacco material.Great majority calculate recovery rate and judge to extract terminal using solid content method is determined at present,
But it is apparent that the method is used for multiple times oven method measuring solid content, not only takes but also extraction can not be calculated in time
Rate and in time judge extract terminal.Application publication number has invented Soxhlet extraction method measure again for the patent of invention of CN105806732A
The method for making raw tobacco material limit recovery rate, it is that papermaking-method reconstituted tobaccos raw material is extracted using Soxhlet extraction device,
The liquid clarification to soxhlet extraction device is terminal；Absolute dry mass before and after being extracted with raw material is poor, is computed showing that the limit is extracted
Rate；And then draw each recovery rate for extracting workshop section in production process.Although this invention is easy to operate, extraction time is longer, dress
Put complexity, it is still desirable to the absolute dry mass difference before and after raw material is extracted is calculated so as to calculate recovery rate, it is impossible to the judgement of real-time online
Extract terminal.The judgement of terminal is extracted to extraction efficiency and equipment service efficiency important, at present to judging to extract eventually
Point rarely has research, does not also judge that tobacco material extracts the concrete grammar of terminal.Therefore the deficiencies in the prior art how are overcome to be
The problem of current reconstituted tobacco technology field urgent need to resolve.
The content of the invention
The present invention at present to extract terminal cannot quick and precisely decision method, there is wave in the process in the resources of production
The problem taken, studies and extracts there is provided a kind of tobacco material the decision method of terminal.The method is by determining extract conductance
The change of rate, can judge to extract terminal in time, be to save operation hours, optimization extraction conditions, reduction production cost to carry
For larger help.
For achieving the above object, the technical solution used in the present invention is as follows：
A kind of tobacco material extracts the decision method of terminal, comprises the steps：
Step (1), in tobacco material extraction process, from the beginning of operation is extracted, determines the conductance of extract every 2m in
Rate；
Step (2), from the beginning of 4m in are extracted, 1. calculates conductivity variations rate by formula：
Wherein CR is the rate of change of electrical conductivity；
ECiThe electrical conductivity of extract when being i-th minute；
ECi+2The electrical conductivity of extract when being the i-th+2 minutes；
ECi+4The electrical conductivity of extract when being the i-th+4 minutes；
Step (3), when CR≤0.5%, then is judged to reach extraction terminal.
Preferably, described tobacco material includes one or more in offal, tobacco leaf, tobacco fragment and offal.
Compared with prior art, its advantage is the present invention：
(1) electrical conductivity of extract is constantly determined in extraction process, can effective dynamic detection recovery rate in real time, reach
Can timely stop extracting work to terminal is extracted, can about save for 10%～20% extraction time, larger raising is extracted
Efficiency.
(2) timely and effectively judge that extracting terminal can greatly save operation hours, and then reduce production cost, it is excellent
Change extraction conditions.
(3) extraction process for tobacco material provides a kind of new technical method.
Description of the drawings
Fig. 1 is that the electrical conductivity of A group extracts changes over figure；
Fig. 2 is A1The time dependent broken line graphs of group EC/% and CRRE/%；
Fig. 3 is that the electrical conductivity of B group extracts changes over figure；
Fig. 4 is B1The time dependent broken line graphs of group EC/% and CRRE/%；
Fig. 5 is that the electrical conductivity of smoked sheet extract changes over figure；
Fig. 6 is C3The time dependent broken line graphs of group EC/% and CRRE/%.
Specific embodiment
With reference to embodiment, the present invention is described in further detail.
It will be understood to those of skill in the art that the following example is merely to illustrate the present invention, and should not be regarded as limiting this
Bright scope.Unreceipted particular technique or condition person in embodiment, according to technology or condition described by document in the art
Or carry out according to product description.The unreceipted production firm person such as material therefor, instrument, is and can pass through to buy what is obtained
Conventional products.
Embodiment 1
(1) offal is extracted using level Four continuous flow upstream leaching method；
(2) adopt 8m3Extractor, A groups weigh the offal of 500kg, add 4000kg, 60 DEG C of distilled water every time, press
Solid-to-liquid ratio is 1:8 are tested, and are carried out altogether five experiments, are obtained A0、A1、A2、A3、A4Extract, per 2min in extraction process
Electrical conductivity of measurement, measurement result is as shown in figure 1, press formula by the experimental result of gained
Calculated, obtained table 1.
Table 1：A group conductance measurement data and CR values
Continued 1
Take A1Group experimental data calculates analysis, by formulaCarry out conductivity variations rate
Calculate, calculate recovery rate rate of change(wherein CRREiIt is
The recovery rate of i-th minute, CRREi+2The recovery rate of the i-th+2 minutes), with verify the present invention correctness, obtain 2 data of table and
Fig. 2, it can be seen that the trend of calculated CR and CRRE reaches unanimity, we are by calculating the change of recovery rate to prove this
Bright reasonable and correctness.By table one as can be seen that when CR≤0.5%, i.e., can determine that when 18min is extracted to have reached
To extraction terminal.
Table 2.A1Group electrical conductivity and recovery rate change over rate
(3) B groups weigh the offal of 500kg, by solid-to-liquid ratio 1:8 points is B1、B2、B3、B4Group, B4Middle addition 4000kg, 60 DEG C
Distilled water, B3Middle addition A3Extract, B2Middle addition A2Extract, B1Middle addition A1Extract, surveys per 2min in extraction process
Electrical conductivity of amount, measurement result such as Fig. 3 and presses formulaCarry out the number of conductivity variations rate
According to as shown in table 3.
Table 3.B group conductance measurement data and CR values
(4) take B1Group experimental data calculates analysis, by formulaCarry out conductivity variations rate
Calculating, calculate recovery rate rate of changeTo verify this
Bright correctness, obtains 4 data of table and Fig. 4, as can be seen from Table 4, when CR≤0.5%, i.e., can sentence when 16min is extracted
It is set to and has reached extraction terminal.
Table 4.B1Group electrical conductivity changes over rate
(4) by the data of Fig. 1 and Fig. 3 this it appears that when electrical conductivity can tend towards stability with the increase of extraction time,
By A1、B1The practicality and correctness of the present invention can be intuitively found out in group data.In extraction process, we are become using electrical conductivity
Rate formulaTo quantitatively judge extraction terminal, by calculate CRRE demonstrate when CR≤
0.5% no more materials are extracted, thus are judged to extract terminal.In actual production, current offal most preferably soaks
Taking technique condition is：Temperature 60 C, time 20min, solid-liquid ratio 1:8, judge to extract terminal by testing measurement electrical conductivity, can be with
Find out and typically terminal is can reach in 14～20min or so, such that it is able to save the substantial amounts of time, improve as far as possible and extract effect
Rate.
Embodiment 2
(1) adopt 8m3Extractor, weigh the tobacco leaf of 500kg, every time add 5000kg, 60 DEG C of distilled water, by solid-liquid
Than for 1:10 are tested, and are carried out altogether five experiments, are obtained C1、C2、C3、C4、C5Group extract, extracts 40min, extracted
An electrical conductivity is measured in journey per 2min, measurement result such as Fig. 5 and formula is pressedCarry out conductance
Shown in rate rate of change table 5, in actual production, tobacco leaf general extraction time is 40min, by the data obtained it can be seen that pressing this
Bright decision method can save the regular hour in extraction process, so as to improve extraction efficiency.
Table 5.C group conductance measurement data and CR values
Continued 5
(2) take C3Group experimental data calculates analysis, by formulaCarry out conductivity variations rate
Calculating, calculate recovery rate rate of changeTo verify this
Bright correctness, obtains 6 data of table and Fig. 6, it can be seen that when CR≤0.5%, i.e., can determine that when 38min is extracted for
Extraction terminal is reached.
Table 6.C3Group electrical conductivity changes over rate
(3) by the data of Fig. 5 this it appears that when electrical conductivity can tend towards stability with the increase of extraction time, by C3Group
The practicality and correctness of the present invention can be intuitively found out in data (table 6 and Fig. 6).In extraction process, we adopt electrical conductivity
Rate of change formulaTo quantitatively judge extraction terminal, by calculate CRRE demonstrate when CR≤
0.5% no more materials are extracted, thus are judged to extract terminal.Temperature is to affect one of factor of electrical conductivity,
As temperature cannot be accurately constant in experimentation, so can there is certain error to the measure of electrical conductivity, can determine
During determine several times to guarantee accuracy more.Extraction process so rapidly and efficiently is very helpful to extraction process.
Embodiment 3
Embodiment 3 and the difference of embodiment 2 are tobacco leaf to be replaced with offal, tobacco fragment and offal (mass ratio is 1：2：
1), remaining step is all identical.
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel it should be appreciated that the present invention is not restricted to the described embodiments, the simply explanation described in above-described embodiment and specification this
The principle of invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changes
Change and improvement is both fallen within scope of the claimed invention.The claimed scope of the invention by appending claims and its
Equivalent thereof.
Claims (2)
1. a kind of tobacco material extracts the decision method of terminal, it is characterised in that comprise the steps：
Step（1）, in tobacco material extraction process, from the beginning of operation is extracted, the electrical conductivity of lower extract is determined every 2min；
Step（2）, from the beginning of the 4th minute of operation is extracted, conductivity variations rate is 1. calculated by formula：
×100%................................................①
Wherein CR is the rate of change of electrical conductivity；
The electrical conductivity of extract when being i-th minute；
The electrical conductivity of extract when being the i-th+2 minutes；
The electrical conductivity of extract when being the i-th+4 minutes；
Step（3）, when CR≤0.5%, then it is judged to reach extraction terminal.
2. tobacco material according to claim 1 extract terminal decision method it is characterized in that：Described tobacco material
Including one or more in offal, tobacco leaf, tobacco fragment and offal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610962261.0A CN106509974A (en) | 2016-11-04 | 2016-11-04 | Method for judging extraction stop point of tobacco raw materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610962261.0A CN106509974A (en) | 2016-11-04 | 2016-11-04 | Method for judging extraction stop point of tobacco raw materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106509974A true CN106509974A (en) | 2017-03-22 |
Family
ID=58326195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610962261.0A Pending CN106509974A (en) | 2016-11-04 | 2016-11-04 | Method for judging extraction stop point of tobacco raw materials |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6295102A (en) * | 1985-10-21 | 1987-05-01 | Sumitomo Heavy Ind Ltd | Extractor by supercritical fluid |
| CN102489037A (en) * | 2011-11-22 | 2012-06-13 | 中国中医科学院中药研究所 | Extraction process optimization method |
| CN105105311A (en) * | 2015-09-25 | 2015-12-02 | 江苏中烟工业有限责任公司 | Determination method of paper-making reconstituted tobacco raw material extraction rate |
| CN105319175A (en) * | 2015-11-03 | 2016-02-10 | 浙江大学 | On-line recognition and finish point judgment method of dynamic response model during traditional Chinese medicine extraction process |
| CN105806732A (en) * | 2016-03-23 | 2016-07-27 | 江苏鑫源烟草薄片有限公司 | Method for measuring limit extraction rate of regenerated tobacco raw materials through Soxhlet extractor method |
-
2016
- 2016-11-04 CN CN201610962261.0A patent/CN106509974A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6295102A (en) * | 1985-10-21 | 1987-05-01 | Sumitomo Heavy Ind Ltd | Extractor by supercritical fluid |
| CN102489037A (en) * | 2011-11-22 | 2012-06-13 | 中国中医科学院中药研究所 | Extraction process optimization method |
| CN105105311A (en) * | 2015-09-25 | 2015-12-02 | 江苏中烟工业有限责任公司 | Determination method of paper-making reconstituted tobacco raw material extraction rate |
| CN105319175A (en) * | 2015-11-03 | 2016-02-10 | 浙江大学 | On-line recognition and finish point judgment method of dynamic response model during traditional Chinese medicine extraction process |
| CN105806732A (en) * | 2016-03-23 | 2016-07-27 | 江苏鑫源烟草薄片有限公司 | Method for measuring limit extraction rate of regenerated tobacco raw materials through Soxhlet extractor method |
Non-Patent Citations (1)
| Title |
|---|
| 薛伟明等: "电导率测定法在植物有效成分提取过程中的应用研究", 《现代化工》 * |
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Application publication date: 20170322 |
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