CN106481397A

CN106481397A - Noise reducing type exhaust gas filter

Info

Publication number: CN106481397A
Application number: CN201510541799.XA
Authority: CN
Inventors: 华玉娣
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-08-31
Filing date: 2015-08-31
Publication date: 2017-03-08

Abstract

The present invention relates to a kind of noise reducing type exhaust gas filter.It includes Rose Box（1）, fire extinguisher（7）And acoustic filter（8）, Rose Box（1）Inside it is provided with drainage screen（2）And ceramic honeycomb carrier（3）, Rose Box（1）Front end be provided with fog-spray nozzle（10）.A kind of present invention noise reducing type exhaust gas filter, first in the presence of acoustic filter and fire extinguisher, carry out noise reduction and fire extinguishing, then sodium carbonate water smoke is utilized to eliminate the acid ingredient in tail gas, finally under drainage screen and ceramic honeycomb carrier double-filtration, by the tail gas for CO, HC, NOx for the main component, react into CO₂、H₂O、N₂And O₂, simultaneously the micropore on next door can effectively filter the black smoke granule in waste gas, and in the presence of catalyst coat, black smoke granule can be burned off, and further increases tail gas clean-up effect.

Description

Noise reducing type exhaust gas filter

Technical field

The present invention relates to a kind of noise reducing type exhaust gas filter, for purifying vehicle exhaust.Belong to automobile equipment technical field.

Background technology

At present, common car tail-gas filter, is using NO, the NO in catalyst and vehicle exhaust₂React with CO, generate CO₂And N₂Both uncontaminated gases, but it is equipped with the automobile of Diesel engine, due to containing black smoke granule in the tail gas of Diesel engine, existing exhaust gas filter can not effectively filter black smoke granule, so can cause environmental pollution；Eliminating further of the acid ingredient of existing tail gas is the new demand to vent gas treatment and urban environmental protection for the people.

Content of the invention

It is an object of the invention to overcoming above-mentioned deficiency; provide a kind of noise reducing type exhaust gas filter; this exhaust gas filter energy noise reduction and fire extinguishing, also can filter black smoke granule while CO, HC, NOx harmful gass in filtering vehicle exhaust, and black smoke granule can progressively burn and aoxidize at high temperature；Eliminate the acid ingredient in tail gas simultaneously.

The object of the present invention is achieved like this：

A kind of noise reducing type exhaust gas filter, including Rose Box, is characterized in：Described noise reducing type exhaust gas filter also includes fire extinguisher And acoustic filter，The outlet of described acoustic filter is connected with the import of fire extinguisher，The outlet of fire extinguisher is connected with the inlet exhaust gas of Rose Box，It is provided with drainage screen and ceramic honeycomb carrier in described Rose Box，Described Rose Box includes the first arc-shaped edges、Second arc-shaped edges、First hypotenuse and the second hypotenuse，Described first arc-shaped edges、Second hypotenuse、Second arc-shaped edges and the first hypotenuse join end to end successively，Connecting place adopts round-corner transition，Described ceramic honeycomb carrier is densely covered with pore in the axial direction，One end of described pore is opening，The other end is provided with closure face，Described closure face and open space arrangement，Described two neighboring pore is provided with next door，Have on next door in cellular micropore，Catalyst coat is coated with next door，，The front end of Rose Box is provided with water inlet pipe and fog-spray nozzle，Water inlet pipe is connected with fog-spray nozzle，Fog-spray nozzle stretches in filter，Spraying liquid adopts the aqueous sodium carbonate of pH10.

A kind of present invention noise reducing type exhaust gas filter, the hole count of its pore is 600 holes/square inch.

A kind of present invention noise reducing type exhaust gas filter, the thickness in its next door is 0.13 ~ 0.14mm.

A kind of present invention noise reducing type exhaust gas filter, its drainage screen is made using sub- glass fibre membrane material.

Compared with prior art, the invention has the beneficial effects as follows：

A kind of present invention noise reducing type exhaust gas filter, first in the presence of acoustic filter and fire extinguisher, carries out noise reduction and fire extinguishing, under drainage screen and ceramic honeycomb carrier double-filtration, the tail gas for CO, HC, NOx for the main component reacts into CO₂、H₂O、N₂And O₂, simultaneously the micropore on next door can effectively filter the black smoke granule in waste gas, and in the presence of catalyst coat, black smoke granule can be burned off, and further increases tail gas clean-up effect；The front end of Rose Box sprays into sodium carbonate water smoke using fog-spray nozzle, eliminates the acid ingredient in tail gas.

Brief description

Fig. 1 is a kind of structural representation of present invention noise reducing type exhaust gas filter.

Fig. 2 is the left view of Fig. 1.

Fig. 3 is the schematic cross-section of the ceramic honeycomb carrier of the present invention.

Fig. 4 is the partial axial section figure of the ceramic honeycomb carrier of the present invention.

Fig. 5 is the structural representation in the next door of ceramic honeycomb carrier of the present invention.

In figure：

Rose Box 1,

First arc-shaped edges 1.1,

Second arc-shaped edges 1.2,

First hypotenuse 1.3,

Second hypotenuse 1.4,

Drainage screen 2,

Ceramic honeycomb carrier 3,

Pore 3.1,

Closure face 3.2,

Next door 3.3,

Micropore 3.4,

Catalyst coat 3.5

Opening 3.6,

Inlet exhaust gas 4,

Offgas outlet 5,

Tail gas 6,

Fire extinguisher 7,

Acoustic filter 8,

Water inlet pipe 9,

Fog-spray nozzle 10.

Specific embodiment

Referring to Fig. 1-5, the present invention relates to a kind of noise reducing type exhaust gas filter, it includes Rose Box 1, drainage screen 2, ceramic honeycomb carrier 3, fire extinguisher 7 and acoustic filter 8, the left end of Rose Box 1 is inlet exhaust gas 4, right-hand member is offgas outlet 5, the outlet of described acoustic filter 8 is connected with the import of fire extinguisher 7, and the outlet of fire extinguisher 7 is connected with the inlet exhaust gas 4 of Rose Box 1.

Described drainage screen 2 and ceramic honeycomb carrier 3 are arranged in Rose Box 1，Drainage screen 2 is at inlet exhaust gas 4，Described Rose Box 1 includes the first arc-shaped edges 1.1、Second arc-shaped edges 1.2、First hypotenuse 1.3 and the second hypotenuse 1.4，Described first arc-shaped edges 1.1、Second hypotenuse 1.4、Second arc-shaped edges 1.2 and the first hypotenuse 1.3 join end to end successively，Connecting place adopts round-corner transition，The shape of described ceramic honeycomb carrier 3 is corresponding with Rose Box 1，And ceramic honeycomb carrier 3 is densely covered with pore 3.1 in the axial direction，One end of described pore 3.1 is opening 3.6，The other end is provided with closure face 3.2，Described closure face 3.2 and opening 3.6 arranged for interval，Described two neighboring pore 3.1 is provided with next door 3.3，Have on next door 3.3 in cellular micropore 3.4，Catalyst coat 3.5 is coated with next door 3.3.

The front end of Rose Box 1 is additionally provided with water inlet pipe 9 and fog-spray nozzle 10, and water inlet pipe 9 is connected with fog-spray nozzle 10, and fog-spray nozzle 10 stretches in filter, and spraying liquid adopts the aqueous sodium carbonate of pH10.

Wherein, the hole count of pore 3.1 is 600 holes/square inch, and the thickness in next door 3.3 is 0.13 ~ 0.14mm.

Described drainage screen 2 is made using sub- glass fibre membrane material.

Operation principle：The present invention is fabricated to honeycomb ceramic carrier using cordierite，And be built in exhaust purifier of diesel engine，The tail gas of the waste gas tail gas electromotor with black smoke granule that Diesel engine is discharged is through acoustic filter 8 noise reduction，Subsequently into fire extinguisher 7，Air-flow expands wherein、Rotation，Moisture in evaporation tail gas，Mars can be eliminated simultaneously，Reduce engine noise pollution further，Harmful components in moisture are filtered in follow-up drainage screen 2 and ceramic honeycomb carrier 3，The tail gas discharged from fire extinguisher 7 enters from inlet exhaust gas 4，The aqueous sodium carbonate first passing around fog-spray nozzle ejection is processed，Eliminate the acid ingredient in tail gas，It is then passed through the single filter of drainage screen 2，Subsequently into ceramic honeycomb carrier 3，Enter from the opening 3.6 of pore 3.1，Because pore 3.1 is opening 3.6 at one end，And be then closure face 3.2 in the other end，Therefore waste gas can be by the next door 3.3 with micropore 3.4，Then discharge from the opening 3.6 of adjacent air holes 3.1，Because the diameter of black smoke granule is big compared with micropore 3.4，Black smoke granule therefore in waste gas will be caught on next door 3.3 by filtering，Air-flow then passes through from micropore 3.4.

The active rare earth containing noble metal for the described catalyst coat 3.5, Main Ingredients and Appearance has Pt, Pd, Rh, Al₂O₃, Ce, La, Zr, Cu, Mn, the waste gas of diesel combustion（The predominantly harmful gass such as CO, HC, NOx）During through micropore 3.4, the catalyst coat 3.5 on coating next door 3.3 will strengthen CO, HC, NO_xThe activity of three kinds of gases, promotes it to carry out certain oxidation-reduction chemical reaction, wherein CO is oxidized to colourless nontoxic carbon dioxide at high temperature, HC compound resolves into water at high temperature（H₂O）And carbon dioxide, NO_xIt is reduced into nitrogen and oxygen.

When diesel exhaust gas temperature reaches 375 degrees Celsius, in the presence of catalyst coat 3.5, the black smoke granule on next door 3.3 can progressively burn and aoxidize, and the purifying rate of black smoke granule about reaches more than 85%, when reaction temperature reaches 500 Degree Celsius when catalyst and black smoke particle reaction thus burning completely（Catalysis burning）, now the purifying rate of black smoke granule is up to more than 90%.

Claims

1. a kind of noise reducing type exhaust gas filter, including Rose Box（1）It is characterised in that：Described noise reducing type exhaust gas filter also includes fire extinguisher（7）And acoustic filter（8）, described acoustic filter（8）Outlet and fire extinguisher（7）Import be connected, fire extinguisher（7）Outlet and Rose Box（1）Inlet exhaust gas（4）It is connected, described Rose Box（1）Inside it is disposed with drainage screen（2）And ceramic honeycomb carrier（3）, described Rose Box（1）Including the first arc-shaped edges（1.1）, the second arc-shaped edges（1.2）, the first hypotenuse（1.3）With the second hypotenuse（1.4）, described first arc-shaped edges（1.1）, the second hypotenuse（1.4）, the second arc-shaped edges（1.2）With the first hypotenuse（1.3）Join end to end successively, connecting place adopts round-corner transition, described ceramic honeycomb carrier（3）It is densely covered with pore in the axial direction（3.1）, described pore（3.1）One end be opening（3.6）, the other end is provided with closure face（3.2）, described closure face（3.2）And opening（3.6）Arranged for interval, described two neighboring pore（3.1）It is provided with next door（3.3）, next door（3.3）On have in cellular micropore（3.4）, next door（3.3）On be coated with catalyst coat（3.5）, Rose Box（1）Front end be provided with water inlet pipe（9）And fog-spray nozzle（10）, water inlet pipe（9）With fog-spray nozzle（10）It is connected, fog-spray nozzle（10）Stretch in filter, spraying liquid adopts the aqueous sodium carbonate of pH10.

2. a kind of noise reducing type exhaust gas filter according to claim 1 it is characterised in that：Described pore（3.1）Hole count be 600 holes/square inch.

3. a kind of noise reducing type exhaust gas filter according to claim 1 and 2 it is characterised in that：Described next door（3.3）Thickness be 0.13 ~ 0.14mm.

4. a kind of noise reducing type exhaust gas filter according to claim 1 it is characterised in that：Described drainage screen（2）Made using sub- glass fibre membrane material.