Summary of the invention
The purpose of this invention is to provide a kind of cigarette technological method for processing that reduces tenor Li, be intended to set about, explore the cigarette technological method for processing that reduces tenor Li from the cigarette working process parameter.
The objective of the invention is to realize like this: a kind of cigarette technological method for processing that reduces tenor Li, main by the loose operation of the microwave that carries out in order, loosening and gaining moisture operation and HT+ drying process are formed, and the concrete technological parameter of operation is following:
1), the loose operation of microwave: microwave power 120KW, process time 248s;
2), loosening and gaining moisture operation: steam nozzle steam pressure 0.1Mpa, 48 ℃ of hot blast temperatures, drum speed 8r/min;
3), HT and drying process: HT working steam pressure 0.3Mpa, 135 ℃ of hot blast temperatures, humidity discharging throttle opening 80%, hot blast throttle opening 30%, drum speed 13r/min;
The leaf silk warming and humidifying operation of HT for adopting tunnel type leaf silk warming and humidifying machine to carry out.
Optimize combination of process parameters accordingly in above each processes employ, can effectively reduce lithium metal content in the obtained cigarette product flue gas.
The invention has the beneficial effects as follows from cigarette processing technology angle and explored cigarette lowering harm and decreasing coking new way, have important significance for theories and actual application value.
The specific embodiment
Below in conjunction with embodiment the present invention is done further elaboration.
Embodiment 1:
In the loose operation of technology for making tobacco threds microwave, be the basic process parameter with the loose procedure technology parameter of the microwave of focus shaft brand cigarette, carry out tobacco cutting with this basic process parameter, the tobacco sample of generation is a blank sample; The tobacco sample of producing according to the parameters optimization of step 1 is the optimization sample, and the result is following:
The content of the loose operation tobacco sample of table 1 microwave Li
The sample title |
Microwave power (KW) |
Process time (second) |
Cu(μg/g) |
Blank sample |
140 |
320 |
13.93 |
Blank sample 1 |
180 |
300 |
12.8 |
Blank sample 2 |
150 |
360 |
12.3 |
Blank sample 3 |
120 |
240 |
11.2 |
Comparative sample |
120 |
248 |
10.97 |
Can be found out that by table 1 content of metallic element Li has reduced by 21.25% than blank sample in the optimization sample of under the loose working procedure parameter combination of the microwave of optimizing, producing, it is obvious to reduce effect.
Embodiment 2:
In the technology for making tobacco threds loosening and gaining moisture operation, be the basic process parameter with the loosening and gaining moisture procedure technology parameter of focus shaft brand cigarette, carry out tobacco cutting with this basic process parameter, the tobacco sample of generation is a blank sample; The tobacco sample of producing according to the parameters optimization of step 2 is the optimization sample, and the result is following:
The content of table 2 loosening and gaining moisture operation tobacco sample Li
Can be found out that by table 2 content of metallic element Li has reduced by 60.59% than blank sample in the optimization sample of under the loosening and gaining moisture combination of process parameters of having optimized, producing, it is obvious to reduce effect.
Embodiment 3:
In the technology for making tobacco threds HT+ drying process, be the basic process parameter with the HT+ drying process technological parameter of focus shaft brand cigarette, carry out tobacco cutting with this basic process parameter, the tobacco sample of generation is a blank sample; The tobacco sample of producing according to the parameters optimization of step 3 is the optimization sample, and the result is following:
The content of table 3HT+ drying process tobacco sample Li
Can be found out that by table 3 content of metallic element Li has reduced by 49.53% than blank sample in the optimization sample of under the HT+ baking silk combination of process parameters of having optimized, producing, it is obvious to reduce effect.
Steam pressure is gauge pressure among this paper.
Metal Li Determination on content adopts the disclosed Waters Using ICP-MS of document " micro-wave digestion-inductively coupled plasma mass spectrometry is measured 27 kinds of elements in the tobacco simultaneously " (spectroscopy and spectrum analysis, the 27th volume, the 6th phase, in June, 2007).
Some explanation:
1, about the horizontally selective limiting factor of patent technological parameter:
Because it is actual that this patent is applied to suitability for industrialized production, therefore, mainly receive the restriction of following objective condition about the selection of parameter horizontal extent:
(1) restriction of the horizontal extent of process equipment own, working ability;
(2) the cigarette product aesthetic quality fluctuation that obtains after the parameter adjustment can not be too big, otherwise can influence acceptance and the degree of recognition of consumer to product.
2, about optimizing the stability of producing under the combination of process parameters:
The index detected value that this patent obtains under the optimization combination of process parameters is three explained hereafter products and detects mean value.