CN201453695U

CN201453695U - Gas-disinfecting tube

Info

Publication number: CN201453695U
Application number: CN2009200870610U
Authority: CN
Inventors: 江超
Original assignee: Hubei Normal University
Current assignee: Hubei Normal University
Priority date: 2009-07-02
Filing date: 2009-07-02
Publication date: 2010-05-12
Anticipated expiration: 2019-07-02

Abstract

The utility model relates to a gas-disinfecting tube, which comprises a quartz glass tube, an intake tube and an exhaust tube are respectively arranged on both ends of the quartz glass tube, the gas-disinfecting tube also comprises a needle-plate discharging structure oppositely arranged on the upper and the lower walls of the quartz glass tube, and the needle-plate discharging structure consists of a flat anode and a cathode consisting of a plurality of hollow stainless steel needles. The gas-disinfecting tube is a research achievement for high-pressure gas discharge; aimed at the increasing industrial demand on toxic gas disinfection, the gas-disinfecting tube is designed by utilizing 'needle-plate' direct-current glow discharge capable of generating a large volume of high-pressure gas discharge plasma, so the human body and the environment cannot be harmed; and the gas-disinfecting tube can be used by different users to disinfect a large volume of toxic gas.

Description

The gas depoisoning pipe

(1) technical field: this utility model belongs to environmental protection equipment, specifically is a kind of dusty gas disinfectant gas depoisoning pipe that is used for.

(2) prior art: industrial waste gas is the important source of atmosphere pollution.Big capacity industrial waste gas enters atmosphere, and atmosphere quality is descended, and brings serious harm to health, brings about great losses to national economy.Industrial waste gas comprises organic exhaust gas and inorganic waste gases.Organic exhaust gas mainly comprises various hydro carbons, alcohols, aldehydes, acids, ketone and amine etc.; Inorganic waste gases mainly comprises oxysulfide, nitrogen oxide, oxycarbide, halogen and chemical compound thereof etc.Industrial waste gas has nothing in common with each other according to its improvement method of its exhaust air rate, temperature, concentration and chemical physical property own.Its traditional improvement method mainly contains following several: (1) Production by Catalytic Combustion Process; (2) active carbon adsorption; (3) liquid absorption method.But there is the big defective of energy consumption in " firing method "; " absorption method " exists operating cost higher, easily produces secondary pollution, and equipment is huge, defectives such as post processing engineering complexity; " absorption process " exists last handling process complexity and secondary pollution problem equally." bioanalysis " is " rising star " who handles in recent years in the organic exhaust gas method, and this method is applied to deodorize the earliest, and its shortcoming is exactly that floor space is too big.In recent years, the new method that utilization " plasma " removes organic exhaust gas has appearred, its ultimate principle is to pass through high-voltage glow-discharge, obtain plasma at normal temperatures and pressures, high energy electron in the plasma and oxonium ion, hydroxide ion isoreactivity particle and Organic substance carry out oxidation, degradation reaction, make pollutant change harmless object into.In general, the temperature of Organic substance flame combustion ignition is more than 700 ℃, and catalytic combustion also need be higher than 200 ℃.And the catalytic degradation Organic substance can carry out at normal temperatures and pressures in plasma.This new technique has really been realized innoxious technology, and the end product of waste gas purification is carbon dioxide and water, non-secondary pollution.It has overcome the big shortcoming of " bioanalysis " floor space simultaneously, has compact conformation, and volume is little, and operating cost is low, and is easy to maintenance, the advantage of long service life.Can be widely used in organic exhaust gas, stench and abnormal flavour that industries such as rubber, printing and dyeing, pharmacy, shoe box bag, leather and sewage and garbage disposal produce.

(3) summary of the invention: the purpose of this utility model just provides a kind of gas depoisoning pipe that is used for gas depoisoning, this sterilization pipe is the basis achievement in research of hyperbar gas discharge in recent years, in conjunction with industrial toxic gas is disinfected growing demand, utilize " pin-plate " direct current glow discharge produce large volume the hyperbar discharge plasma characteristic and design, human body and environment are not constituted harm, can be selected to the disinfection of high capacity toxic gas for different user.

Gas depoisoning pipe of the present utility model, comprise a quartz glass tube, be respectively equipped with air inlet pipe and exhaustor at the quartz glass tube two ends, also comprise being oppositely arranged on the up and down pin-plate discharging structure on the pipe wall position of quartz ampoule, the negative electrode that described pin-plate discharging structure is made up of dull and stereotyped anode and some hollow stainless pins constitutes.

Lower wall surface is to be planar structure on the described quartz glass tube, and described anode and negative electrode are installed in respectively on these two faces, and the quartz glass tube two sides are curved surfaces.

Described dull and stereotyped anode is made of molybdenum sheet, thickness 5mm.

The external diameter of described hollow stainless pin is 2mm, and internal diameter is 1mm, and the needle point angle is 15 °, and the needle point hole is 200 μ m, and the spacing between each stainless pin is 5mm, and the distance between stainless pin and the plate electrode is 20mm.

Design principle of the present utility model is: the processing of toxic gas usually needs to use the nonequilibrium plasma source, typical nonequilibrium plasma source can adopt hyperbar glow discharge to obtain. " pin-plate " discharge type of analogy gas laser, the utility model proposes a kind of special " pin-plate " discharging structure, it is made of hollow stainless pin and metal plate, hollow stainless pin is a negative electrode, metal plate is an anode, constitute typical hollow cathode discharge. according to the characteristic of hollow cathode discharge, when the negative electrode aperture drops to micron dimension, discharge becomes microhollow cathode discharge, discharge air pressure can meet or exceed atmospheric pressure, discharge this moment is hyperbar glow discharge, can satisfy the requirement of gas depoisoning. a plurality of such microhollow cathode discharge parallel runnings are arranged in the discharge tube, the steady glow discharge plasma that can the generation scale reaches cubic centimetre magnitude, electron density reaches a large amount of discharge tubes of 1014cm-3. and is connected in parallel and constitutes a decontaminating apparatus, produce the discharge plasma of large volume, can be to the industrial organic exhaust gas disinfection.

In this utility model device, gas flow direction is vertical with course of discharge during discharge, changes to spark discharge for fear of glow discharge, and gas flow rate must reach 100-200ms-1 during stable discharging, perhaps must limit the size of discharge current.But, if the restriction discharge current can have influence on the electron energy Density Distribution in the plasma, thereby influence Disinfection Effect.For fear of discharge gas (dusty gas) is accelerated to so high flow velocity, this utility model allows assist gas in a small amount enter by hollow needle and participates in discharge in the quartz glass tube, forms two strands of vertical discharge air-flows.After adopting this form, main discharge gas just can accelerate at a high speed, has simplified the manufacture difficulty of device.Experimental result shows: when utilizing this device stable discharging, the flow velocity of dusty gas is reduced to 1-10ms-1, the methane in the dusty gas is removed reach 80%, and benzene is removed and reached 90%, and Disinfection Effect is fairly good.

This utility model device is a kind of hyperbar glow discharge device, and its main feature is: (1) discharge plasma has the nonthermal electron Energy distribution, and region of discharge forms high current density, and electron density reaches the 1014cm-3 magnitude; (2) discharge plasma has high power density, have a large amount of high energy electrons (＞5eV), these are the toxic component in the decomposition gas effectively; (3) dusty gas flows through region of discharge, can take away the heat of discharge generation fast, reduces power attenuation, improves treatment effeciency; (4) discharge air pressure can meet or exceed atmospheric pressure; (5) seal request of discharge tube is lower, has reduced the manufacture difficulty of device.

(4) description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the vertical view of quartz glass tube among Fig. 1;

Fig. 3 is the left view of quartz glass tube among Fig. 1;

Fig. 4 is the sectional structure sketch map of quartz glass tube A-A direction among Fig. 1;

Fig. 5 is the structural representation of Fig. 1 hollow core stainless pin.

Among the figure, 1-quartz glass tube, 2-air inlet pipe, the 3-exhaustor, the dull and stereotyped anode of 4-, the hollow stainless pin of 5-, 6-quartz glass tube upper wall surface, 7-quartz glass tube lower wall surface, the hollow stainless pin fixing hole of 8-, the 9-lead, 10-high-pressure pulse direct current source, 11-charge flow rate control valve, the 12-air induction conduit, the 13-exhaust manifolds, 14-air bleeding valve, the air inlet duct of 15-stainless pin.

(5) specific embodiment:

Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, the utlity model has quartz glass tube 1, be respectively equipped with air inlet pipe 2 and exhaustor 3 at the quartz glass tube two ends, also comprise and be oppositely arranged on the up and down pin-plate discharging structure on the pipe wall position of quartz ampoule, the negative electrode that described pin-plate discharging structure is made up of dull and stereotyped anode 4 and some hollow stainless pins 5 constitutes. as Fig. 2, Fig. 3, shown in Fig. 4, the quartz glass tube top and bottom are planes, two sparking electrodes are installed on these two faces, the quartz glass tube two sides are curved surfaces, quartz glass tube is fired according to this design and is formed. be fixed with plate electrode 4 on the quartz glass tube upper wall surface 6, have the fixing hole 8 of some hollow stainless pins on the lower wall surface 7, some stainless pins place in the fixing hole and are arranged in a row, spacing between each stainless pin is that 5mm. plate electrode and stainless pin distance between electrodes are 20mm, and the central axis that makes the center of discharge plasma and quartz glass tube coincides and is advisable, two electrodes are connected on the high-pressure pulse direct current source 10 by lead 9. when dusty gas is handled, dusty gas is through air inlet pipe 2, charge flow rate control valve 11 and air induction conduit 12, enter in the quartz glass tube 1, after dusty gas is handled in glass tubing, then from exhaust manifolds 13, to discharge in air bleeding valve 14 and the exhaustor 3. assist gas then enters in the quartz glass tube from the air inlet duct 15 of hollow stainless pin 5, also discharges together from exhaustor 3 then.

Claims

1. gas depoisoning pipe, comprise a quartz glass tube, be respectively equipped with air inlet pipe and exhaustor at the quartz glass tube two ends, also comprise being oppositely arranged on the pin on the lower wall surface-plate discharging structure on the quartz glass tube, it is characterized in that: the negative electrode that described pin-plate discharging structure is made up of dull and stereotyped anode and some hollow stainless pins constitutes.

2. gas depoisoning pipe according to claim 1 is characterized in that: lower wall surface is planar structure on the described quartz glass tube, and described anode and negative electrode are installed in respectively on these two faces, and the quartz glass tube two sides are curved surfaces.

3. gas depoisoning pipe according to claim 1 and 2 is characterized in that: described dull and stereotyped anode is made of molybdenum sheet, and its thickness is 5mm.

4. gas depoisoning pipe according to claim 1 and 2 is characterized in that: the external diameter of described hollow stainless pin is 2mm, and internal diameter is 1mm, the needle point angle is 15 °, the needle point hole is 200 μ m, and the spacing between each stainless pin is 5mm, and the distance between stainless pin and the plate electrode is 20mm.