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Adsorption performance of zeolite molecular sieve and its application in flue gas harm reduction

Views: 78     Author: Site Editor     Publish Time: 2021-12-23      Origin: Site

With smoking and health becoming the focus of attention of the whole society, the improvement or structural innovation of cigarette filter materials by zeolite and zeolite molecular sieve to selectively reduce the harmful components in cigarette smoke and improve the safety of cigarette smoking while ensuring the sensory quality has become one of the key topics of cigarette science and technology research.

 

chemical

In the industrialization of zeolite molecular sieve preparation process, two kinds of high-silica zeolite powder were synthesized first, and then 20-40 mesh zeolite molecular sieve particles were prepared with silica sol as binder and Tianjing powder as pore-making agent, and the physical and chemical properties of molecular sieve were characterized and analyzed, and the molecular sieve particles were applied to cigarette filters, which showed that they can effectively reduce the content of harmful components in cigarette smoke and have very wide application prospects as adsorbent materials for harmful substances in tobacco.


A cigarette factory prepared FGS-101 (with Y-type zeolite as the main body) and FGS-102 (with ZSM-5-type zeolite as the main body) molecular sieve particles by using zeolite powder as the base material, silica sol as the binder and Tianjing powder as the pore-making agent. With reference to the method of GB5606.4 "Cigarettes Part 4: Sensory Technical Requirements", nine members of the company's Cigarette Sensory Quality Evaluation Committee were organized to evaluate the sensory quality of cigarette samples.


The results of the physical phase identification and crystallinity determination of the two zeolite molecular sieves using X-ray diffractometer (XRD) are shown in Fig. 3. From the peaks shown on the XRD pattern, it can be seen that FGS-101 shows a typical Y-type zeolite characteristic diffraction peak and the relative crystallinity is calculated to be >95%; FGS-102 shows a typical ZSM-5-type zeolite characteristic diffraction peak and the relative crystallinity is calculated to be >90%.

 

The prepared zeolite molecular sieve particle material has no significant effect on the three cigarette smoke indexes when applied to cigarettes, which is beneficial to maintain the style characteristics of cigarette products. 

chemical

As a new material for cigarette harm reduction, FGS-101 has a filtering effect on two harmful components in cigarette smoke, HCN and crotonaldehyde, and the overall reduction of cigarette harm index is 0.2; FGS-102 has a better filtering effect on three harmful components in cigarette smoke, HCN, crotonaldehyde and B[a]P, and its harm reduction effect on HCN reaches 20.1%, the reduction rate of crotonaldehyde reaches 10.6%, and the reduction rate of B[a]P reaches 10.6%. 


The harm reduction effect of HCN reached 20.1%, the reduction rate of crotonaldehyde reached 10.6%, the reduction rate of B[a]P reached 14.4%, and the overall harm index of cigarette decreased by 0.5. This research technology can provide new ideas and ways for cigarette harm reduction technology.


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