Summary of the invention
The objective of the invention is the content of the combination of process parameters of optimizing application in cigarette throwing workshop section, thereby a kind of cigarette technological method for processing that reduces content of beary metal Se is provided with Se in the reduction cigarette.
The technical solution of realization the present invention's purpose is following:
A kind of cigarette technological method for processing that reduces content of beary metal Se comprises following operation: microwave is loose, loosening and gaining moisture, blade warming and humidifying, leaves moisting reinforced, storage leaf, chopping, HT+ baking silk, perfuming, storage silk, wraparound.The optimal process parameter of the loose operation of microwave is: 147 kilowatts of microwave powers, 360 seconds process times; The optimal process parameter of loosening and gaining moisture operation is: vapour, (operating) water nozzle steam pressure 0.1MPa, 48 ℃ of return air temperatures, drum speed 9r/min; The optimal process parameter of HT+ drying process is: HT working steam pressure 0.1MPa, 117 ℃ of hot blast temperatures, humidity discharging throttle opening 80%, hot blast throttle opening 56%, drum speed 11r/min, all the other procedure technology parameter constants; The leaf silk warming and humidifying operation of HT for adopting tunnel type leaf silk warming and humidifying machine to carry out.
The sample that the scene is obtained carries out proper process, satisfies chopping respectively, rolls requirement, rolls into finally that elasticity is suitable, the cigarette of good uniformity props up.At last sample is smoked panel test, judge aesthetic quality's change direction and intensity of variation.
More than each processes employ optimize combination of process parameters accordingly, can effectively reduce Se content in the obtained cigarette product.Need to prove that the selection of parameter level receives the certain influence of objective condition because this test is directly carried out in suitability for industrialized production equipment.
The present invention compared with prior art its beneficial effect is:
1, a kind of cigarette technological method for processing that reduces content of beary metal Se is provided.
2, explored the new way of cigarette lowering harm and decreasing coking from cigarette processing technology angle.
3, to the regulation and control of flue-cured tobacco content of beary metal, mainly concentrate on the tobacco cultivation field at present, as utilize plastic-film-covered cultivation to reduce the flue-cured tobacco content of beary metal; This research then reduces content of beary metal through the setting of technological parameter, has important theory and inquires into meaning and actual application value.
The specific embodiment
Below in conjunction with embodiment the present invention is done further explanation.
The tobacco process code requirement of issuing according to country at present, set cigarette processing technology for making tobacco threds comprises following operation: microwave is loose, loosening and gaining moisture, blade warming and humidifying, leaves moisting are reinforced, storage leaf, chopping, HT+ baking silk, perfuming, storage silk etc.In cigarette throwing workshop section, mainly be through the tobacco special processing equipment, for example FT112 type microwave tobacco bale loosening system, WQ3313 type drum-type blade damping machine, SH625 type thin board type cut-tobacco drier etc. are carried out the operation task.The task of the loose operation of microwave is suitably to improve the smoked sheet temperature, and loose smoked sheet further improves the anti-processability of smoked sheet.The present invention at the optimal process parameter of the loose operation of microwave is: 147 kilowatts of microwave powers, 360 seconds process times; The task of loosening and gaining moisture operation is moisture content and the temperature that increases smoked sheet, improves the anti-processability of smoked sheet, makes section back smoked sheet loose, the aesthetic quality who improves smoked sheet.The present invention at the optimal process parameter of loosening and gaining moisture operation is: vapour, (operating) water nozzle steam pressure 0.1MPa, 48 ℃ of return air temperatures, drum speed 9r/min; The process task of HT+ drying process is the moisture of control leaf silk, satisfies the following process requirement, improves the aesthetic quality of leaf silk, improves leaf silk filling capacity and anti-processability, reaches the coordination of the two.The present invention at the optimal process parameter of HT+ drying process is: HT working steam pressure 0.1MPa, 117 ℃ of hot blast temperatures, humidity discharging throttle opening 80%, hot blast throttle opening 56%, drum speed 11r/min, all the other procedure technology parameter constants; The leaf silk warming and humidifying operation of HT for adopting tunnel type leaf silk warming and humidifying machine to carry out.The tobacco sample that production obtains is for optimizing sample.To optimize sample utilizes the inductivity coupled plasma mass spectrometry analytical technology to detect to draw testing result.
Embodiment 1
To produce the tobacco sample that obtains as control sample by set cigarette technology for making tobacco threds parameter; In the loose operation of microwave, press the optimization working process parameter combination adjusting process parameter of microwave power 147KW, process time 360s, all the other procedure technology parameter constants are produced the tobacco sample that obtains for optimizing sample.The Se content detection of two samples is seen table 1:
Loose process optimization sample of table 1 microwave and control sample Se content detection result
The sample title |
Se(μg/g) |
Microwave power (KW) |
Process time (second) |
Control sample |
0.742 |
140 |
320 |
Optimize sample |
0.491 |
147 |
360 |
Can find out that by table 1 Se content has reduced by 33.83% than the control samples article in the tobacco sample that production obtains under the loose optimization combination of process parameters of microwave, has tangible reduction Se content effect.
Embodiment 2
To produce the tobacco sample that obtains as control sample by set cigarette technology for making tobacco threds parameter; In the loosening and gaining moisture operation, press the optimization working process parameter combination adjusting process parameter of vapour, (operating) water nozzle steam pressure 0.1MPa, 48 ℃ of return air temperatures, drum speed 9r/min, all the other procedure technology parameter constants are produced the tobacco sample that obtains and are the optimization sample.The Se content detection of two samples is seen table 2:
Table 2 loosening and gaining moisture process optimization sample and blank sample Se content detection result
The sample title |
Se(μg/g) |
Vapour, (operating) water nozzle steam pressure (MPa) |
Return air temperature (℃) |
Drum speed (r/min) |
Control sample |
0.742 |
0.2 |
48 |
11 |
Optimize sample |
0.565 |
0.1 |
48 |
9 |
Can find out that by table 2 Se content has reduced by 23.85% than the control samples article in the tobacco sample that production obtains under loosening and gaining moisture optimization combination of process parameters, has tangible reduction Se content effect.
Embodiment 3
To produce the tobacco sample that obtains as control sample by set cigarette technology for making tobacco threds parameter; In the HT+ drying process; Press the optimization working process parameter combination adjusting process parameter of HT working steam pressure 0.1MPa, 117 ℃ of hot blast temperatures, humidity discharging throttle opening 80%, hot blast throttle opening 56%, drum speed 11r/min; All the other procedure technology parameter constants are produced the tobacco sample that obtains and are the optimization sample.The Se content detection of two samples is seen table 3:
Table 3HT+ drying process is optimized sample and control sample Se content detection result
Can find out that by table 3 Se content has reduced by 21.83% than the control samples article in the tobacco sample that production obtains under HT+ baking silk optimization combination of process parameters, has tangible reduction Se content effect.
Sampling method and each the process optimization test data and the testing result of test are provided below:
(1) tobacco-dryer exit sampling: according to testing program, the adjusting process parameter, treat that the baking silk operates steadily after; According to the process time of material in operation; In a baking silk exit (1~2 meter), constant duration sampling 3 times (about 25Kg/inferior), need immediately the leaf silk is divided after naturally cooling to normal temperature on the ground of cleaning after the sampling to mix again; With about the about 40Kg of quartering keeping sample, as a sample A; Repeat above step after 5 minutes and get a parallel samples B again, it is subsequent use to carry out sign.
(2) test data of Se content is following in each operation:
The loose operation test specimen of table 4 microwave, optimization sample and control sample Se content detection result
Sample |
Se(μg/g) |
Microwave power (KW) |
Process time (second) |
Control sample |
0.742 |
140 |
320 |
Control samples-1 |
0.623 |
180 |
300 |
Control samples-2 |
0.507 |
150 |
360 |
Control samples-3 |
0.627 |
150 |
240 |
Optimize sample |
0.491 |
147 |
360 |
Table 5 loosening and gaining moisture operation test specimen, optimization sample and control sample Se content detection result
Table 6HT+ drying process test specimen, optimization sample and control sample Se content detection result
Explain: control sample is the sample by normal set technological parameter processing, and test specimen is to change the sample of processing behind the machined parameters, and optimizing sample is the sample of processing under the parameters optimization.
The index detected value that the present invention obtains under the optimization combination of process parameters is three explained hereafter products and detects mean value.
(3) tester is:
Icp ms (ICP-MS): VG PQ ExCell type (U.S. Thermo Electron company);
Microwave digestion system: Multiwave 3000 types are equipped with HP-100 type counteracting tank (Austrian Anton Paar company);
Direct-Q type ultrapure water equipment (U.S. Millipore company);
HNO
3(65%), H
2O
2(30%), is top grade pure (German Merck company);
High-purity argon gas (99.999%, Sichuan Tianyi Science & Technology Co., Ltd);
Electronic balance: Mettler AX 504 types (Switzerland Mettler Toledo Inc.).
(4) icp ms (ICP-MS) assay method sample pre-treatments:
40 mesh sieves are pulverized and crossed to leaf silk sample 40 ℃ of oven dry down, then; Accurately take by weighing the sample 0.3g after sieving, place the interior jar of PFA of micro-wave digestion stove, add the HNO of 6mL 65%
3H with 2mL 30%
2O
2Solution.Digestion procedure: respectively be incubated 5min at 100 ℃, 130 ℃ and 160 ℃, be warmed up to 190 ℃ then and be incubated 10min again; After heating end, treat to take out counteracting tank when temperature is brought down below 60 ℃, then sample is transferred in the 50mL PET sample bottle of weighing in advance, with jar in about 42mL water washing PFA several times, washing lotion also is transferred in the sample bottle, shakes up after weighing.The preparation sample blank uses the same method.