CN201266145Y

CN201266145Y - Flue gas trapping absorption apparatus

Info

Publication number: CN201266145Y
Application number: CNU2008200814669U
Authority: CN
Inventors: 李银科; 施红林; 贺斌; 金永灿; 缪恩明; 陈章玉; 杨光宇
Original assignee: Yunnan Academy of Tobacco Science
Current assignee: Yunnan Academy of Tobacco Science
Priority date: 2008-08-07
Filing date: 2008-08-07
Publication date: 2009-07-01
Anticipated expiration: 2018-08-07

Abstract

The utility model discloses a smoke gas collecting and absorbing device which comprises an outer bushing (1), an inner bushing (2) and a closing plug (3). The outer bushing (1), the inner bushing (2) and the closing plug (3) are sequentially sealed and matched; an upper screen plate (6) and a lower screen plate (4) are arranged in the inner bushing (2); and buffering stuffing (5) is filled between the two screen plates. The smoke gas collecting and absorbing device is utilized to detect heavy metal contained in the cigarette smoke gas; the detection limit of six kinds of heavy metal elements contained in the smoke gas is 0.003-0.008 microgrammes/L, the correlative coefficient R is more than or equal to 0.9990, the recovery rate is between 85 percent and 103 percent, and RSD is less than 3.4 percent. The smoke gas collecting and absorbing device can be disassembled for cleaning very conveniently, and can meet the requirement of analysis and detection for constant-quantity heavy metal elements contained in the cigarette smoke gas.

Description

A kind of flue gas trapping absorption plant

Technical field

The utility model belongs to cigarette smoke objectionable constituent analysis determining technology field, is specifically related to a kind of flue gas trapping absorption plant that is used for cigarette smoke capture and constituent enrichment thereof.

Technical background

Cigarette is a kind of special food, and along with going deep into of smoking and fitness campaign, people more and more pay attention to the safety issue of smoking property of cigarette, and heavy metal element is the important objectionable constituent of a class in the cigarette.Therefore, the heavy metal element of accurately measuring in the cigarette smoke guarantees to have realistic meaning to the tobacco security.Inductivity coupled plasma mass spectrometry (ICP-MS) is a novel analysis and testing technology that develops rapidly in recent years, its principal feature be highly sensitive, detection limit is low, linear detection range wide (can reach 8 orders of magnitude), and can carry out multielement mensuration etc. simultaneously.In the determination of heavy metal elements, the capture of flue gas directly influences the accuracy of mensuration in cigarette smoke.The many ICP-MS of domestic existing usefulness measure the report of heavy metal element, bibliographical information collect granule phase substance with cambridge filter, filter disc 1%HNO ₃The solution leaching, ICP-MS measures the method for heavy metal element in the flue gas TPM.But this method can only capture the heavy metal in the flue gas granule phase substance, can not react content of beary metal in the flue gas comprehensively.Other flue gas trapping methods have that cold trap trapping, electrostatic precipitation capture, sampling bag directly captures and solution capture method etc., and these methods still satisfy cigarette smoke and capture the requirement that reaches accurate quantitative test.For this reason, the utility model people has developed a kind of cigarette smoke and has captured absorption plant on the basis of solution method of trapping, be used for the capture of cigarette smoke heavy metal element, evidence, and effect is good.

The utility model content

The purpose of this utility model is to provide a kind of cleaning of being convenient to take apart, fully the flue gas trapping absorption plant of efficient absorption smoke components.

The purpose of this utility model is achieved in that and comprises outer tube, inner sleeve and sealing-plug that outer tube, inner sleeve, sealing-plug are sealed and matched successively, and sieve plate up and down is set in the inner sleeve, fill the buffering filler between two sieve plates.

Because the utility model has adopted the flue gas trapping absorption plant of design voluntarily, to compare with conventional absorption plant, the effusion of flue gas can obtain relaxing, and the residence time in trapping agent prolongs; And through the dispersion of sieve plate and the buffering of buffering filler, the surface area of smoke absorption increases greatly, can guarantee flue gas and trapping agent full contact, makes smoke components obtain high efficiency absorption, can satisfy the requirement of trace heavy metal ultimate analysis in the cigarette smoke.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described, but never in any form the utility model is limited.

Accompanying drawing is the utility model flue gas trapping apparatus structure synoptic diagram.

Wherein: 1 outer tube, 2 inner sleeves, 3 sealing-plugs, 4 times sieve plates, 5 buffering fillers, 6 upper sieve plates, 7 suction inlets, 8 escape holes.

Embodiment

As shown in drawings, as shown in drawings, the utility model flue gas trapping absorber, comprise outer tube 1, inner sleeve 2 and sealing-plug 3, outer tube 1 is provided with suction inlet 7, escape hole 8, and outer tube 1, inner sleeve 2, sealing-plug 3 are sealed and matched successively, be provided with in the inner sleeve 2 between upper sieve plate 6, following sieve plate 4, two sieve plates and fill buffering filler 5.

Described buffering filler 5 is beaded glass, pottery grain and tetrafluoroethene powder etc.

The particle diameter of described buffering filler 5 is 50-150 μ m, especially is 80-120 μ m.

The aperture of described upper sieve plate 6, following sieve plate 4 is 30-50 μ m.

The course of work of the utility model flue gas trapping absorption plant:

When capturing flue gas, cigarette smoke is by suction inlet 7 inspirations of outer tube 1, gone out by the escape hole 8 of sealing-plug 3, adorned two sieve plates up and down of aperture 30-50 μ m in inner sleeve, and the beaded glass of dress diameter 100 μ m is as buffering between two sieve plates; Flue gas sucks the back and is separated into the multiply little airflow by sieve plate down like this, through the beaded glass buffer strip, and then is flowed out by upper sieve plate, obtains once more disperseing, and makes flue gas be caught liquid collecting fully and absorbs.

Claims

1, a kind of flue gas trapping absorption plant, comprise outer tube (1), inner sleeve (2) and sealing-plug (3), outer tube (1) is provided with suction inlet (7), escape hole (8), it is characterized in that: outer tube (1), inner sleeve (2), sealing-plug (3) are sealed and matched successively, upper sieve plate (6), following sieve plate (4) are set in the inner sleeve (2), fill buffering filler (5) between two sieve plates.

2, flue gas trapping absorption plant as claimed in claim 1 is characterized in that: described buffering filler (5) is beaded glass, pottery grain and tetrafluoroethene powder.

3, flue gas trapping absorption plant as claimed in claim 1 is characterized in that: the particle diameter of described buffering filler (5) is 50-150 μ m.

4, as claim 1 or 2 or 3 described flue gas trapping absorption plants, it is characterized in that: the particle diameter of described buffering filler (5) is 80-120 μ m.

5, flue gas trapping absorption plant as claimed in claim 1 is characterized in that: the aperture of described upper sieve plate (6), following sieve plate (4) is 30-50 μ m.

6, flue gas trapping absorption plant as claimed in claim 1 is characterized in that: between outer tube (1) and the inner sleeve (2), according to suitable trapping solution and the material of different choice that captures smoke components, also can select solid absorbent.

7, flue gas trapping absorption plant as claimed in claim 6 is characterized in that: described trapping solution is sulfuric acid, nitric acid, hydrochloric acid and organic reagent.

8, flue gas trapping absorption plant as claimed in claim 6 is characterized in that: described solid absorbent is silica gel, activated charcoal, C18, florisil silica, ion exchange resin, activated alumina and carbonaceous molecular sieve.