CN101966006B - Processing method of cigarettes with low content of metal Li - Google Patents

Abstract

The invention relates to a processing method of cigarettes for reducing the content of metal Li. The concrete process parameters of the main processes of the method are as follows: (1) in a microwave loosening process, the microwave power is 120kW, and the processing time is 248s; (2) in a loosening and moisture regaining process, the vapor pressure of a water vapor nozzle is 0.1MPa, the hot blast temperature is 48 DEG C, and the rotation speed of a cylinder body is 8r/min; and (3) in a high temperature (HT) and tobacco baking process, the HT working vapor pressure is 0.3MPa, the hot blast temperature is 135 DEG C, the aperture of a humidity eliminating throttle is 80%, the aperture of a hot blast throttle is 30%, and the rotation speed of the cylinder body is 13r/min, wherein HT is a process for heating and humidifying cut tobaccos by adopting a tunnel type cut tobacco heating and humidifying machine. The invention effectively reduces the content of metal Li in the smoke of the prepared cigarette products by optimal combination of the process parameters of the existing processes.

Description

A kind of cigarette technological method for processing that reduces tenor Li

Technical field

The present invention relates to the method for tobacco cutting, be specifically related to a kind of cigarette technological method for processing that reduces tenor Li.

Background technology

In recent years, along with growing interest and the attention of the public, how to reduce harmful components burst size in the cigarette smoke and become the focus that the tobacco chemistry worker pays close attention to smoking and health problem.Stipulate in Chinese government's signed " Framework Convention on Tobacco Control " that the Chinese government will work up more severe " Tobacco Control " laws and regulations; Impel tobacco productive corporation when reducing releasing content of coke tar in cigarette, more want the burst size of main harmful components in the strict control cigarette smoke.For improving the quality and the security of China's cigarette product; State Tobacco Monopoly Bureau propose to strengthen in 2008 raw tobacco material, cigarette processing technology and auxiliary material design to cigarette smoke in the influence research of harmful components burst size, for lowering harm and decreasing coking application technical research and low harm product development provide the basis.Metal Li is as one of cigarette smoke harmful element of reporting in recent years, and the part as flue gas aerosol when cigarette burning is inhaled into human body, can cause the acute or slow poisoning of body.At present, only limit to analytical method, how to reduce and do not appear in the newspapers for the research of metal Li in the cigarette.

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.

Description of drawings

The tobacco flow process chart that Fig. 1 the present invention relates to.

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.

Claims (1)

1. a cigarette technological method for processing that reduces tenor Li is main by the loose operation of the microwave that carries out in order, loosening and gaining moisture operation and HT+ drying process composition, and it is characterized in that: the concrete technological parameter of said 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.