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Lin W.G.,Nanjing University | Zhou Y.,Nanjing University | Gu F.N.,Nanjing University | Zhou S.L.,Nanjing University | And 2 more authors.
Applied Catalysis B: Environmental | Year: 2013

New strategy of using ferric zeolite ZSM-5 and Y to adsorb and catalytically degrade tobacco-specific nitrosamines (TSNA) is reported in this article. These zeolites were modified by both aqueous ion-exchange with FeSO4 solution and wet-impregnation of Fe(NO3)3, and characterized by XRD, UV-vis DRS, H2-TPR and temperature-programmed surface reaction (TPSR). Apart from laboratory tests, these samples were put into tobacco rods of cigarette to assess their real performance of reducing TSNA content in smoke, and the determination of TSNA was carried out by LC-MS/MS technique with the assistance of internal-standards. The ion-exchanged zeolites are more active than their impregnated analogs, and the ferric Y zeolite could selectively reduce 26% of total TSNA in mainstream smoke of Burley type tobacco. Catalytic breaking of the chemical bond in NNO group of nitrosamines by zeolite is the key step of decomposition of these carcinogens. © 2012 Elsevier B.V.


Wang G.,China Tobacco Shandong Industrial Co. | Zhang D.,China Tobacco Shandong Industrial Co. | Wang H.,CAS Zhengzhou Research Institute
Tobacco Science and Technology | Year: 2013

In order to save capital investment in construction of warehouse for tobacco aging and rationalize the arrangement of auxiliary facilities, the purification system for exhaust gas after phosphine fumigation and air conditioning system were optimized with HVAC (heating, ventilating and air conditioning) technology. The ventilation pipe was designed in accordance with centralized double duct air conditioning system, comprising of phosphine purification equipment and modular air conditioning units, and PLC was adopted to automatically adjust the temperature and humidity in the warehouse and monitor the phosphine concentration in exhausted air during fumigation. The results of practical application showed that optimal design shortened the duration of phosphine purification and realized the zero emission of harmful gas. Tobacco leaf aging could be conducted at different layers or areas in warehouse, and the emission of phosphine gas after fumigation was safe and reached the standard. The air conditioners were installed in a separate room, and the warehouse space was increased relatively, which saved 5310 thousand RMB yuan per warehouse building. The operation of air conditioning units could be controlled according to the amount of aged leaves, which reduced the consumption of electric power and the cost of leaf aging.


Li L.,China Tobacco Shandong Industrial Co. | Yan W.,China Tobacco Shandong Industrial Co. | Xu P.,China Tobacco Shandong Industrial Co.
Tobacco Science and Technology | Year: 2013

Unsatisfied with the loosening effect of traditional feeder, therefore a reconstituted tobacco feeder with automatic loosening function was designed, which was composed of a feeding belt, an automatic loosening device, a hopper and an elevating belt. Reconstituted tobacco was conveyed to the automatic loosening device via the feeding belt, the loosened tobacco entered hoper and was uniformly blended by elevating belt, which could be adjusted according to the flow of tobacco. The results of application showed that there was no obvious tobacco breakage, the loosen rate reached 99.7%, and the loosening effect of reconstituted tobacco and the blending of tobacco were improved.


Zhang C.,China Tobacco Shandong Industrial Co.
Tobacco Science and Technology | Year: 2013

In YB47 packer, the break in conveying belt joint tends to damage cigarette packets due to jam in the discharge passage, therefore the passage was modified by analyzing the movement relationship between cigarette packet and conveying belt. The motor, conveying belt, pulleys were removed. The bottom belt was replaced by a steel guide plate with grain-shaped surface to reduce the frictional force between cigarette packets and the plate, ensure the speed of cigarette packet for entering pneumatic lifter and avoid the damage of cigarette packet. The results of application showed that the machine failures caused by belt joint break were avoided, the quality of cigarette packets was guaranteed, the working life of the guide plate reached 24 months, 6 conveying belts were saved for a packer per year, the running cost of machine was reduced, and the machine efficiency was increased.


Yu G.,China Tobacco Shandong Industrial Co. | Feng Y.,Qingdao Petrochemical Advanced Technical School | Cui S.,China Tobacco Shandong Industrial Co. | Lu L.,China Tobacco Shandong Industrial Co.
Tobacco Science and Technology | Year: 2013

To facilitate tobacco researchers' studying and using Computational Fluid Dynamics (CFD) software, the status quo of CFD application in tobacco industry over the past decade was summarized involving tobacco processing equipment, workshop and storage space planning. It was believed that CFD software possessed broad application prospects in the researches on the fluid flow uniformity in the processes of tobacco processing and storage, the even distribution of temperature and humidity fields, the variation relationships between moisture content and temperature of material, and the problems relative to cigarette burning.


Lin W.G.,Nanjing University | Wan M.M.,Nanjing University | Zhou Y.,Nanjing University | Gu H.C.,Nanjing University | And 2 more authors.
Journal of Materials Chemistry A | Year: 2013

The design and preparation of a new "self-protected" zeolite catalyst are reported in this paper for the first time, in order to face the challenges arising from environmental protection, in selective catalytic degrading of tobacco specific nitrosamine (TSNA) carcinogens in environmental tobacco smoke (ETS). A new method to synthesize NaY zeolite with uniform microsphere morphology via an organic amine TMAOH as bifunctional template is reported in this study. The spherical zeolite is prepared by a one-step hydrothermal crystallization without any post-treatment or other shape-directing agent. It has a rugged surface like a cluster of crystal grains and its crystallization process is monitored in detail by means of XRD and SEM. To assess how the zeolite morphology affects its catalytic performance in complex systems, this material was directly mixed with tobacco shred and added into cigarettes to in situ degrade TSNA in smoke. As a result, the clustered zeolite microsphere can avoid the interference of particulate matter in smoke and shows a high selectivity in the removal of TSNA. This synthetic method offers a novel way of preparing zeolites with a spherical morphology, which has great potential application in the fields of catalysis, adsorption and separation. © 2013 The Royal Society of Chemistry.


Guo J.H.,Jiyuan Vocational and Technical College | Zhang P.J.,Jiyuan Vocational and Technical College | Ma H.M.,China Tobacco Shandong Industrial Co.
Applied Mechanics and Materials | Year: 2013

According to QJR-400 mine explosion-proof and intrinsically safe AC motor soft-start controllers are subject to various interference, to analyze interference source, interference factors and its consequences, and to study on the those interferences that has taken measures. In the hardware design, to use photoelectric isolation, anti-interference regulated power supply and reasonable grounding and other measures, which can effectively avoid interference. In the software design, digital filtering program can effectively eliminate the interference of random signals and pulse signals. The experimental results show that these measures can effectively inhibition of external interference. © (2013) Trans Tech Publications, Switzerland.


Trademark
China Tobacco Shandong Industrial Co. | Date: 2013-03-18

Cigar cutters; Cigarette cases; Cigarettes; Cigars; Leaf tobacco; Lighters for smokers; Matches; Snuff; Tobacco; Tobacco filters.


Trademark
China Tobacco Shandong Industrial; Co. | Date: 2012-06-19

Tobacco; cigars; cigarettes; snuff; cigarette cases; cigar cutters; matches; lighters for smokers; cigarette filters.


Trademark
China Tobacco Shandong Industrial; Co. | Date: 2012-06-19

Tobacco; cigars; cigarettes; snuff; cigarette cases; cigar cutters; matches; lighters for smokers; cigarette filters.

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