CN102240063B - Method for stabilizing parameters of annular shred dryer through parallel translation of water ratio - Google Patents
Method for stabilizing parameters of annular shred dryer through parallel translation of water ratio Download PDFInfo
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Abstract
The invention relates to a method for stabilizing the parameters of an annular shred dryer and stabilizing product quality. In the traditional method, the technical parameters of a leaf shred drying procedure are stabilized by adjusting the water ratio of a dried shred discharge port, which causes the variation of technical parameters, such as shred dryer drum temperature, hot air temperature and the like and is not favorable to the stabilization of product quality. The invention adopts the technical scheme that the method for stabilizing the parameters of the annular shred dryer through the parallel translation of the water ratio comprises the following steps of: drying leaf shreds with the annular shred dryer; according to the requirement on the adjusting quantity of the water ratio of the discharge port of the shred dryer, carrying out same direction and equal quantity adjustment on the standard value of the water ratio of the discharge port of the leaf shred drying procedure by utilizing a drum type leaf shred dampening machine so that the parallel translation of the water ratio is realized before shred drying and after shred drying. Consistent dewatering quantity is ensured in the drying process through the water ratio parallel translation method. The variation of the running parameters of the shred dryer can be eliminated or reduced, and the stability of the processing quality of the procedure is ensured.
Description
Technical field
The invention belongs to the tobacco industry field, be specifically related to the method that annular cut-tobacco drier parameter is stablized in the parallel movement of a kind of moisture content.
Background technology
In recent years, state inner wrap strip processing enterprise is in the cigarette process, the technology for making tobacco threds parameter is control effectively, realized changing, changing (quoting State Tobacco Monopoly Bureau's " cigarette process standard ") by result's control to process control by control mark sense control parameter.At fiber tow production process middle period silk drying process the influence of product inherent quality comparatively significantly (is quoted Zhengzhou tobacco research institute " characteristic technology application foundation and the report of common technology investigative technique "), technological parameters such as this operation barrel temperature, hot blast temperature have material impact to product sensory quality and physical index.Aborning, because the variation of subsequent handling and process conditions, for the requirement appearance variation of the dry outlet of leaf silk moisture content.So how the technological parameter of stabilization vane silk drying process has just become one of key of stabilized product quality.Traditional way is to adjust baking silk outlet moisture content, does changes in process parameters such as can causing cut-tobacco drier barrel temperature and hot blast temperature like this, is unfavorable for the stable of product quality.
Summary of the invention
The purpose of this invention is to provide the parallel movement of a kind of moisture content and stablize the method for annular cut-tobacco drier parameter, change because of the subsequent handling process conditions to solve leaf silk drying process, cause the dry outlet of leaf silk moisture content changes in demand, thereby cause changes in process parameters such as cut-tobacco drier barrel temperature and hot blast temperature, cause the smoke panel test problem of mass change of cigarette product inherence.
To achieve these goals, the technical solution used in the present invention is:
The method of annular cut-tobacco drier parameter is stablized in the parallel movement of a kind of moisture content, may further comprise the steps: utilize annular cut-tobacco drier to leaf silk drying; According to tobacco-dryer exit moisture content adjustment amount demand, utilize drum-type leaf silk damping machine that moisture content of cut tobacco before dry is accurately adjusted, make it and the equivalent adjustment in the same way of drying process outlet moisture content, moisture content before baking silk with dry by the fire thread after parallel movement, make dry run middle period silk dehydrating amount unanimity.Thereby eliminate or reduce the variation of cut-tobacco drier operational factor, guarantee the stable of this operation crudy.
With respect to prior art, the present invention can reduce or eliminate the variation of cut-tobacco drier operational factor by the unanimity of the method assurance dry run middle period silk dehydrating amount of the parallel movement of moisture content, guarantees the stable of this operation crudy.
Description of drawings
Fig. 1 is 1# sample cut-tobacco drier barrel temperature tendency chart;
Fig. 2 is 2# sample cut-tobacco drier barrel temperature tendency chart;
Fig. 3 is 3# sample cut-tobacco drier barrel temperature tendency chart.
The specific embodiment
The present invention is applicable to that the dry frontal lobe silk of leaf silk warming and humidifying operation is to select for use to have than large outlet moisture content of cut tobacco regulating power, and the equipment of outlet moisture content of cut tobacco accurate (franchise≤0.5%)." the quick leaf silk of the drum-type leaf silk damping machine+air-flow drying machine " and the form technologies such as " drum-type leaf silk damping machines+roller cut tobacco drying machine " that generally adopt as cigarette enterprise.
The definition that the method for annular cut-tobacco drier parameter is stablized in the parallel movement of moisture content: in the process of cigarette fiber tow production, because of the variation of subsequent handling and process conditions, need to adjust the dry outlet of leaf silk moisture content of cut tobacco.Because leaf silk drying and dehydrating total amount changes, and causes the variation of cut-tobacco drier equipment operational factor, cause the fluctuation of product inherent quality.Utilizing drum-type leaf silk damping machine that moisture content of cut tobacco before dry is carried out in the same way equivalent accurately adjusts, make before the baking silk with baking thread after the parallel movement of moisture content, guarantee the unanimity of dry run middle period silk dehydrating amount, to reduce or to eliminate the variation of cut-tobacco drier operational factor, guarantee the stable of this operation crudy.Here the method that will stablize the cut-tobacco drier parameter is called " moisture content method of parallel translation ".
The entrance moisture content of leaf silk moisture regain is adjusted synchronously according to principle and leaf silk drying process outlet moisture content standard value parallel, equivalent, and other parameter index of two-step is constant.Two-step moisture content adjustment amount should be greater than 2.5%.When causing to reach adjustment posterior lobe silk moisture regain moisture content because of the minimum humidification amount of equipment factor, reply supplied materials moisture content (being charging process outlet moisture content) adjusts accordingly, and to guarantee leaf silk moisture regain operation rational humidification space and stable accurate outlet moisture content is arranged.
(1) experimentation
The chance of utilizing storage silk moisture content to adjust, to the fiber tow production process that adopts standard that former technological standards, conventional method adjust and moisture content method of parallel translation to adjust three kinds of standards respectively, utilize the primary processing line centralized control system, five quality index such as the pipe tobacco moisture content of the outlet moisture content of cut tobacco of collection leaf silk dry run, outlet leaf silk temperature, hot blast temperature, barrel temperature and perfuming operation and technological parameter data, select zone of reasonableness to extract data, calculate its mean value and standard deviation, its stability of comparative evaluation; Calculate its process capability index (Cpk), estimate the control ability of each operation index parameter.
Embodiment 1: adopt former technological standards to carry out the throwing experiment, experiment sample is compiled and is the 1# sample.
Embodiment 2: adopt the standard of conventional method adjustment to carry out the throwing experiment, experiment sample is compiled and is the 2# sample.
Embodiment 3: adopt the standard of moisture content method of parallel translation adjustment to carry out the throwing experiment, utilize annular cut-tobacco drier to leaf silk drying; According to tobacco-dryer exit moisture content adjustment amount demand, utilize drum-type leaf silk damping machine that moisture content of cut tobacco before dry is accurately adjusted, make it and the equivalent adjustment in the same way of drying process outlet moisture content, moisture content before baking silk with dry by the fire thread after parallel movement, make dry run middle period silk dehydrating amount unanimity.Experiment sample is compiled and is the 3# sample.
(2) experimental result
Former technological standards is produced the sample volume and is the 1# sample; The sample volume of adjusting standard production according to conventional method is the 2# sample, and the sample volume that the moisture content method of parallel translation is adjusted standard production is the 3# sample.Three sample processing parameters, quality index setting values are adjusted and are seen Table 1:
Table 1 technological parameter, quality index setting value adjustment form
1, the stability analysis of leaf silk moisture regain posterior lobe silk index
In order accurately, objectively to reflect the every index parameter Changing Pattern of baking silk process, temperature and the moisture content of leaf silk moisture regain operation outlet leaf silk need reach standard-required.Extract sample data from the throwing centralized control system, the sampling scope is from reaching for the first time the standard value range value, to the data that reach for the last time between the standard value range value, moisture regain moisture content of cut tobacco stability indicator result of calculation sees Table 2, moisture regain leaf silk temperature stabilization stability indicator table 3:
Table 2 moisture regain moisture content of cut tobacco stability indicator
| | Project | 1# | 2# | 3# | |
| 1 | Standard value | 22.6 | 22.6 | 22.4 | |
| 2 | The standard value upper limit | 23.1 | 23.1 | 22.9 | |
| 3 | The standard value lower limit | 22.1 | 22.1 | 21.9 | |
| 4 | Mean value | 22.607 | 22.620 | 22.413 | |
| 5 | Standard deviation | 0.110 | 0.107 | 0.113 | |
| 6 | Cp | 1.509 | 1.556 | 1.475 | |
| 7 | K | 0.015 | 0.040 | 0.025 | |
| 8 | Cpk | 1.487 | 1.494 | 1.438 | |
| 9 | Significant digit | 114 | 112 | 116 |
Table 3 moisture regain leaf silk temperature stability index
| | Project | 1# | 2# | 3# | |
| 1 | Standard value | 53 | 53 | 53 | |
| 2 | The standard value upper limit | 56 | 56 | 56 | |
| 3 | The standard value lower limit | 50 | 50 | 50 | |
| 4 | Mean value | 53.023 | 52.850 | 52.769 | |
| 5 | Standard deviation | 0.533 | 0.529 | 0.489 | |
| 6 | Cp | 1.877 | 1.890 | 2.046 | |
| 7 | K | 0.008 | 0.050 | 0.077 | |
| 8 | Cpk | 1.863 | 1.796 | 1.888 | |
| 9 | Significant digit | 114 | 114 | 116 |
The mean value of three sample moisture content and temperature is the value of being near the mark all, and standard deviation and Cpk are all more approaching, are in slave mode preferably.
2, the stability analysis of leaf silk drying process
1) baking silk outlet moisture content of cut tobacco
Extract sample data from the throwing centralized control system, the sampling scope is from reaching the standard value range value for the first time, and to the data that reach for the last time between the standard value range value, stability indicator result of calculation sees Table 4:
Table 4 baking silk outlet moisture content of cut tobacco stability indicator
| | Project | 1# | 2# | 3# | |
| 1 | |
13 | 12.8 | 12.8 | |
| 2 | The standard value upper limit | 13.5 | 13.3 | 13.3 | |
| 3 | The standard value lower limit | 12.5 | 12.3 | 12.3 | |
| 4 | Mean value | 13.041 | 12.914 | 12.853 | |
| 5 | Standard deviation | 0.1683 | 0.210 | 0.165 | |
| 6 | Cp | 0.990 | 0.793 | 1.008 | |
| 7 | K | 0.083 | 0.228 | 0.106 | |
| 8 | Cpk | 0.908 | 0.612 | 0.901 | |
| 9 | Significant digit | 112 | 114 | 112 |
1#, 2# and three sample moisture content of 3# mean value is the value of being near the mark all; 3# sample moisture content standard deviation and Cpk and 1# sample are more approaching, improve 47.2% with 2# sample comparison with standard deviation 21.4%, the Cpk that descended.
2) baking silk outlet leaf silk temperature
Extract sample data from the throwing centralized control system, to the data of expecting between the end peak value, stability indicator result of calculation sees Table 5 to the sampling scope from the stub bar peak value:
Table 5 baking Si Yesi temperature stability index
| | Project | 1# | 2# | 3# | |
| 1 | |
55 | 55 | 55 | |
| 2 | The standard value upper limit | 58 | 58 | 58 | |
| 3 | The standard value lower limit | 52 | 52 | 52 | |
| 4 | Mean value | 54.363 | 54.599 | 54.357 | |
| 5 | Standard deviation | 0.468 | 0.697 | 0.466 | |
| 6 | Cp | 2.137 | 1.434 | 2.148 | |
| 7 | K | 0.212 | 0.134 | 0.214 | |
| 8 | Cpk | 1.683 | 1.243 | 1.687 | |
| 9 | Significant digit | 104 | 102 | 108 |
1# and two sample temperature-averagings of 3# value are more approaching, and 2# sample temperature-averaging value exceeds 1#0.236 ℃.3# and 1# sample standard deviation and Cpk are all more approaching, and 2# sample standard deviation decline 33.1%, the Cpk that adjusts than conventional method has improved 35.7%.
3) cut-tobacco drier hot blast temperature
Extract sample data from the throwing centralized control system, stability indicator result of calculation sees Table 6:
Table 6 cut-tobacco drier hot blast temperature stability indicator
| | Project | 1# | 2# | 3# | |
| 1 | Standard value | 110 | 110 | 110 | |
| 2 | The standard value upper limit | 115 | 115 | 115 | |
| 3 | The standard value lower limit | 105 | 105 | 105 | |
| 4 | Mean value | 109.964 | 110.143 | 109.888 | |
| 5 | Standard deviation | 0.907 | 1.379 | 0.965 | |
| 6 | Cp | 1.837 | 1.209 | 1.728 | |
| 7 | K | 0.007 | 0.029 | 0.022 | |
| 8 | Cpk | 1.824 | 1.174 | 1.689 | |
| 9 | |
128 | 138 | 130 |
1#, 2# and three sample hot blast temperatures of 3# mean value is the value of being near the mark all; 3# and 1# sample standard deviation and Cpk are all more approaching, and 30.0%, Cpk improves 43.9% than the decline of 2# sample standard deviation.
4) cut-tobacco drier barrel temperature
Referring to Fig. 1-Fig. 3, be respectively 1#, 2# and three sample cut-tobacco driers of 3# barrel temperature tendency chart.More as can be seen, the tube temperature of 1#, 3# finds equalization point very soon from Fig. 1,2,3 tendency charts, and fluctuation range progressively reduces the value of being near the mark, and is in more satisfactory slave mode; The 2# sample does not in time find equalization point, and the drift of tube temperature increases.
Extract sample data from the throwing centralized control system, the sampling scope is from reaching the critical field value for the first time, and to the data that reach for the last time between the critical field value, stability indicator result of calculation sees Table 7:
Table 7 baking silk outlet moisture content of cut tobacco stability indicator
| | Project | 1# | 2# | 3# | |
| 1 | Standard value | 133 | 133 | 133 | |
| 2 | The standard value |
138 | 138 | 138 | |
| 3 | The standard value |
128 | 128 | 128 | |
| 4 | Mean value | 132.891 | 133.664 | 133.153 | |
| 5 | Standard deviation | 0.966 | 1.299 | 0.997 | |
| 6 | Cp | 1.726 | 1.283 | 1.672 | |
| 7 | K | 0.022 | 0.133 | 0.031 | |
| 8 | Cpk | 1.688 | 1.112 | 1.621 | |
| 9 | |
128 | 138 | 130 |
1# and two sample barrel temperatures of 3# mean value is the value of being near the mark all, and it is more that 2# barrel temperature mean value is higher than standard value; 3# and 1# sample standard of comparison deviation and Cpk are all more approaching, and 23.2%, Cpk improves 45.8% than the decline of 2# sample standard deviation.
3, the pipe tobacco moisture content compares behind the perfuming
Extract sample data from the throwing centralized control system, the sampling scope is from reaching the critical field value for the first time, and to the data that reach for the last time between the critical field value, stability indicator result of calculation sees Table 8:
Pipe tobacco moisture content stability indicator behind table 8 perfuming
| | Project | 1# | 2# | 3# | |
| 1 | Standard value | 12.4 | 12.2 | 12.2 | |
| 2 | The standard value upper limit | 12.9 | 12.7 | 12.7 | |
| 3 | The standard value lower limit | 11.9 | 11.7 | 11.7 | |
| 4 | Mean value | 12.473 | 12.301 | 12.261 | |
| 5 | Standard deviation | 0.169 | 0.227 | 0.167 | |
| 6 | Cp | 0.984 | 0.734 | 0.997 | |
| 7 | K | 0.145 | 0.202 | 0.123 | |
| 8 | Cpk | 0.841 | 0.586 | 0.874 | |
| 9 | Significant digit | 114 | 110 | 108 |
1#, 2# and three sample moisture content of 3# mean value is the value of being near the mark all; 3# and 1# sample standard of comparison deviation and Cpk approach, and 26.4%, Cpk improves 49.1% with the decline of 2# sample standard of comparison deviation.
4, aesthetic quality's contrast
Three samples are adopted the mode of secretly commenting, carry out aesthetic quality's contrast by 11 judging panels and smoke panel test, the results are shown in Table 9:
Table 9 aesthetic quality contrasts smoking result
| |
1# mean value | 2# mean value | 3# mean value |
| Gloss | 5.00 | 5.00 | 5.00 |
| Fragrance | 29.05 | 28.86 | 28.95 |
| Harmony | 5.09 | 5.09 | 5.09 |
| Assorted gas | 10.64 | 10.64 | 10.64 |
| Excitant | 17.77 | 17.64 | 17.77 |
| Pleasant impression | 22.05 | 22.00 | 22.05 |
| Total points | 89.59 | 89.23 | 89.50 |
| With 1# sample changing value | 0 | 0.36 | 0.09 |
The 2# sample of tradition method of adjustment and the contrast of 1# former state, perfume quantity slightly reduces, and excitant increases, and the pleasant impression score reduces, and changing value reaches 0.36 fen; The 3# sample of moisture content method of parallel translation and the changing value of 1# former state only 0.09 minute, uniformity is better.
By the analysis to above-mentioned test result, moisture content method of parallel translation and traditional method of adjustment relatively, a baking silk moisture content of cut tobacco standard deviation 21.4%, the Cpk that descended improves 47.2%; Baking Si Yesi temperature standard deviation decline 33.1%, Cpk has improved 35.7%; Cut-tobacco drier hot blast temperature standard deviation decline 30.0%, Cpk improves 43.9%; Cut-tobacco drier barrel temperature standard deviation decline 23.2%, Cpk improves 45.8%; Aromatic tobacco moisture content standard deviation decline 26.4%, Cpk improves 49.1%; With former state aesthetic quality contrast, the changing value of moisture content method of parallel translation sample only is equivalent to 25% of traditional method of adjustment sample.The moisture content method of parallel translation obviously improves aspect process quality index and technological parameter stable, and operation index control ability has significantly and strengthens.Compare with the primary standard production process, the moisture content method of parallel translation has all kept good uniformity at the aspects such as stability, process control ability and aesthetic quality of leaf silk drying and the every index parameter of perfuming operation, has stablized product quality.
Claims (1)
1.
ContainThe method of annular cut-tobacco drier parameter is stablized in the parallel movement of water rate, it is characterized in that: operating procedure is: when utilizing annular cut-tobacco drier dry to the leaf silk, according to tobacco-dryer exit moisture content adjustment amount demand, the entrance moisture content of leaf silk moisture regain is adjusted synchronously according to principle and leaf silk drying process outlet moisture content standard value parallel, equivalent, utilize drum-type leaf silk damping machine that moisture content of cut tobacco before dry is accurately adjusted, moisture content before baking silk with baking thread after a parallel movement, other parameter index of two-step is constant, makes dry run middle period silk dehydrating amount unanimity.
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| CN106343601B (en) * | 2016-09-09 | 2018-03-13 | 福建中烟工业有限责任公司 | Expanded cut tobacco dries out mouthful method for controlling water content and device |
| CN108175121B (en) * | 2018-01-11 | 2020-12-29 | 上海烟草集团有限责任公司 | Method/system for self-correction of parameters, computer readable storage medium and apparatus |
| CN112220093B (en) * | 2020-09-28 | 2023-03-21 | 福建中烟工业有限责任公司 | Method and device for drying tobacco shreds with constant water loss and method and system for manufacturing tobacco shreds |
| CN112790419B (en) * | 2021-03-18 | 2022-09-23 | 河南中烟工业有限责任公司 | Method and system for controlling processing parameters of cut tobacco charging |
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| CN101133896A (en) * | 2006-08-28 | 2008-03-05 | 湖南中烟工业公司 | Decompacting moisture regain steam exhausting quantity controlling method and device thereof |
| CN101356992A (en) * | 2007-07-31 | 2009-02-04 | 武汉烟草(集团)有限公司 | Downstream type tobacco-dryer exit tobacco-shred water control method |
| CN102090708A (en) * | 2010-09-10 | 2011-06-15 | 龙岩烟草工业有限责任公司 | Control method for improving stability of moisture content of cut tobaccos |
| CN102090705A (en) * | 2010-08-26 | 2011-06-15 | 龙岩烟草工业有限责任公司 | Method for improving tobacco-drying process capability |
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| CN101133896A (en) * | 2006-08-28 | 2008-03-05 | 湖南中烟工业公司 | Decompacting moisture regain steam exhausting quantity controlling method and device thereof |
| CN101356992A (en) * | 2007-07-31 | 2009-02-04 | 武汉烟草(集团)有限公司 | Downstream type tobacco-dryer exit tobacco-shred water control method |
| CN102090705A (en) * | 2010-08-26 | 2011-06-15 | 龙岩烟草工业有限责任公司 | Method for improving tobacco-drying process capability |
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