CN2123615U

CN2123615U - Tail gas smoke purifier for motor vehicle

Info

Publication number: CN2123615U
Application number: CN92215708U
Authority: CN
Inventors: 段忠善
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-06-16
Filing date: 1992-06-16
Publication date: 1992-12-02

Abstract

The utility model relates to a tail gas smoke purifier for a motor vehicle, characterized in that a cylinder body 7 is internally provided a partial pressure cover 4, alkaline sponges 2, 9, 12, 16, active carbon layers 10, 14, a metallic oxide catalyst layer 11 and a molecular sieve 15. The utility model is installed on the external end of the exhaust pipe of the motor vehicle so as to reduce exhaust resistance. The utility model has the advantages of convenient installation, good purifying effect and low cost, and uses the low-priced metallic oxide catalyst to replace an expensive valuable metallic catalyst. In addition, via the adsorption function of the alkaline sponges and the active carbon layers, the pungent odor of tail gas is removed.

Description

Tail gas smoke purifier for motor vehicle

The utility model relates to a kind of gas purifier, particularly relates to a kind of motor-vehicle tail-gas smoke purifier.

The quantity of Motor Vehicle increases day by day, big city particularly, and the waste gas of discharging owing to Motor Vehicle is one of day by day serious reason of atmospheric pollution.Nitrogen-containing oxide (NO in the motor-vehicle tail-gas _X), carbon hydride (HC), carbon monoxide (CO) be the most serious to the harm of human body.Containing stink that sulfur dioxide, soot particle, mist of oil also have intense stimulus in addition, also to endanger people healthy.The approach of solution motor vehicle exhaust gases pollution is a kind of now is the generation that improves the operating mode minimizing waste gas of motor car engine.State-of-the-art exactly motor can not solve the exhaust emission pollution problem fully.Another kind is to be transformed into harmless CO with the harmful gas that catalyzer is discharged motor ₂And H ₂O.Be that rare earth catalyst is housed in engine exhaust pipe in 89204679.1 patent applications, make harmful gas CO and HC be converted into CO ₂And H ₂O.Provided in 90200675.5 patent applications in addition at the outlet pipe inwall cellular catalyst is installed, catalyst surface-coated platinum (Pt), palladium (Pa) and rhodium noble metals such as (Ph) also can impel CO and HC to be converted into CO ₂And H ₂O.The shortcoming of these two kinds of schemes is rare earth catalyst and precious metal catalyst cost costliness, is contained in addition to make the exhaust resistance increase bigger in the outlet pipe, influences engine power, and installs and change all more complicated.

The purpose of this utility model is a kind of outlet pipe tail end that is installed in of design, uses the motor-vehicle tail-gas smoke purifier of cheap non-precious metal oxide as catalyzer.

The utility model is achieved in that the motor-vehicle tail-gas smoke purifier, by suction port, protecgulum, cylindrical body, bonnet, the air outlet is formed, suction port communicates with protecgulum in the central authorities of protecgulum, protecgulum is connected with the left end of cylindrical body, bonnet is connected with the right-hand member of cylindrical body, the air outlet communicates in the central authorities of bonnet and with bonnet, it is characterized in that left end has dividing potential drop cover and preceding net in the cylindrical body, between preceding net and the dividing potential drop cover an alkaline sponge is arranged, there is an alkaline sponge on the right side of preceding net, there is a Double-level Reticulated at the middle part in the cylindrical body, there is an alkaline sponge on the left side of Double-level Reticulated, and active carbon layer and metal oxide catalyst layer are arranged between the two alkaline sponge, and back net is arranged in the right-hand member of cylindrical body, there is an alkaline sponge on the left side of back net, between Double-level Reticulated and the alkaline sponge active carbon layer and molecular sieve is arranged; Between the net of in the bonnet and back buffer cell is arranged.

Accompanying drawing has provided embodiment of the present utility model, is described further below in conjunction with accompanying drawing:

Fig. 1 is the utility model principal section structural representation.Symbolic representation is as follows among the figure: suction port 1, alkaline sponge 2, protecgulum 3, dividing potential drop cover 4, preceding net 5, screw 6, cylindrical body 7, fixedly back-up ring 8, alkaline sponge 9, active carbon layer 10, metal oxide catalyst layer 11, alkaline sponge 12, Double-level Reticulated 13, active carbon layer 14, molecular sieve 15, alkaline sponge 16, back net 17, bonnet 18, air outlet 19, buffer cell 20, breach 21.Metal oxide catalyst layer 11 comprises cupric oxide, iron oxide, zine oxide, manganese oxide and aluminium oxide.Alkalescence sponge the 2,9,12, the 16th, the sponge that the process alkaline solution soaked.Dividing potential drop cover 4 and preceding net 5 are to be fixed on the fixedly back-up ring 8 in the cylindrical body 7 by screw 6.The breach 21 that fastening usefulness is arranged for the front end that is installed in suction port 1.For the caliber that reduces resistance air outlet 19 caliber greater than suction port 1.

Working principle of the present utility model and using method are such: suction port 1 of the present utility model is installed in the outer end of motor vehicle exhaust, the tail gas of being discharged enters through dividing potential drop cover 4 back dividing potential drops from suction port 1, removes pungent odour by lead thing, charcoal cigarette, mist of oil that alkaline sponge 2 absorbs in the tail gas.Active carbon layer 10 also plays suction-operated and removes pungent odour.CO and CH gas when through metal oxide catalyst layer 11 in the tail gas produce CO through catalysis ₂With water and N ₂, the sulfur dioxide in the tail gas produces sulphurous acid through catalyzer.Again through parlkaline sponge 12, active carbon layer 14, molecular sieve 15 and alkaline sponge 16, make that remaining nitrogen oxide, carbon hydride and sulfur dioxide are purified once more in the tail gas.Obtain the best removal excitant and the effect of harmful gas.Show that after tested purifying effect of the present utility model can eliminate more than 85% carbon monoxide, carbon hydride, nitrogen oxide, sulfur dioxide, can eliminate more than 98% soot, leadization thing and mist of oil.

The utility model has the advantages that and be installed in the motor vehicle exhaust outer end, reduce exhaust resistance, easy for installation, and use cheap metal oxide catalyst, good purification and can greatly reducing cost has been removed the pungent odour in the tail gas by alkaline sponge and active carbon layer suction-operated in addition.

Claims

1, a kind of motor-vehicle tail-gas smoke purifier, by suction port 1, protecgulum 3, cylindrical body 7, bonnet 18, air outlet 19 is formed, suction port 1 communicates with protecgulum 3 in the central authorities of protecgulum 3, protecgulum 3 is connected with the left end of cylindrical body 7, bonnet 18 is connected with the right-hand member of cylindrical body 7, air outlet 19 communicates in the central authorities of bonnet 18 and with bonnet 18, it is characterized in that left end has dividing potential drop cover 4 and preceding net 5 in the cylindrical body 7, between preceding net 5 and the dividing potential drop cover 4 an alkaline sponge 2 is arranged, there is an alkaline sponge 9 on the right side of preceding net 5, there is a Double-level Reticulated 13 at the middle part in the cylindrical body 7, there is an alkaline sponge 12 on the left side of Double-level Reticulated 13, two alkaline sponges 9, active carbon layer 10 and metal oxide catalyst layer 11 are arranged between 12, back net 17 is arranged in the right-hand member of cylindrical body 7, there is an alkaline sponge 16 on the left side of back net 17, and active carbon layer 14 and molecular sieve 15 are arranged between Double-level Reticulated 13 and the alkaline sponge 16, between the net 17 of in the bonnet 18 and back buffer cell 20 is arranged.

2,, it is characterized in that metal oxide catalyst layer 11 comprises cupric oxide, iron oxide, zine oxide, manganese oxide and aluminium oxide according to the described motor-vehicle tail-gas smoke purifier of claim 1.

3,, it is characterized in that alkaline sponge the 2,9,12, the 16th, the sponge that the process alkaline solution soaked according to the described motor-vehicle tail-gas smoke purifier of claim 1.

4,, it is characterized in that dividing potential drop cover 4 and preceding net 5 are to be fixed on the fixedly back-up ring 8 in the cylindrical body 7 by screw 6 according to the described motor-vehicle tail-gas smoke purifier of claim 1.

5, according to the described motor-vehicle tail-gas smoke purifier of claim 1, it is characterized in that the front end of suction port 1 has the spiral shell breach 21 of usefulness admittedly, the caliber of air outlet 19 is greater than the caliber of suction port 1.