CN106481394A - No black smoke exhaust gas filter - Google Patents

Abstract

The present invention relates to one kind no black smoke exhaust gas filter.It includes Rose Box（1）, described Rose Box（1）Inside it is provided with drainage screen（2）And ceramic honeycomb carrier（3）, drainage screen（2）On be provided with oblique backfin（2.1）With longitudinal belling（2.2）, Rose Box（1）Front end be additionally provided with fog-spray nozzle（9）.One kind of the present invention no black smoke exhaust gas filter, eliminates the acid ingredient in tail gas first with sodium carbonate water smoke, then 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.

Description

No black smoke exhaust gas filter

Technical field

The present invention relates to one kind no black smoke exhaust gas filter, for purifying vehicle exhaust.Belong to automobile equipment technical field.

Background technology

At present, common car tail-gas filter, is all much to be expelled directly out through simple filtration, and is equipped with the automobile of Diesel engine, contain black smoke granule, existing exhaust gas filter can not effectively filter black smoke granule, so can cause environmental pollution in its tail gas；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 one kind no black smoke exhaust gas filter; also black smoke granule can be filtered, and black smoke granule can progressively burn and aoxidize at high temperature while CO, HC, NOx harmful gass in filtering vehicle exhaust for this exhaust gas filter；Eliminate the acid ingredient in tail gas simultaneously.

The object of the present invention is achieved like this：

One kind no black smoke exhaust gas filter, including Rose Box, is characterized in：It is provided with drainage screen and ceramic honeycomb carrier in described Rose Box, oblique backfin and longitudinal belling are provided with drainage screen, 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 in cellular micropore on next door, 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.

One kind of the present invention no black smoke exhaust gas filter, the hole count of its pore is 600 holes/square inch.

One kind of the present invention no black smoke exhaust gas filter, the thickness in its next door is 0.13 ~ 0.14mm.

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

One kind of the present invention no black smoke exhaust gas filter, 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 the present invention no black smoke 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.

Fig. 6 is the structural representation of the drainage screen of the present invention.

Fig. 7 is the expanded view of the drainage screen of the present invention.

Fig. 8 is the enlarged drawing of A in Fig. 6.

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,

Backfin 2.1,

Belling 2.2,

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,

Gas channel 7,

Water inlet pipe 8,

Fog-spray nozzle 9.

Specific embodiment

Referring to Fig. 1-8, the present invention relates to one kind no black smoke exhaust gas filter, it includes Rose Box 1, drainage screen 2 and ceramic honeycomb carrier 3, the left end of Rose Box 1 is inlet exhaust gas 4, right-hand member is offgas outlet 5, described drainage screen 2 and ceramic honeycomb carrier 3 are arranged in Rose Box 1, and drainage screen 2 is positioned close at inlet exhaust gas 4.

Described drainage screen 2 is made using stainless steel material，Oblique backfin 2.1 and longitudinal belling 2.2 are provided with drainage screen 2，Fig. 7 is the expanded view of drainage screen 2，Axial direction when laterally rolling for drainage screen 2 in way，Radial direction when longitudinally rolling for drainage screen 2，During use，It is arranged on after drainage screen 2 is wound in Rose Box 1，Backfin 2.1 and drainage screen 2 body form gas channel 7，Gas channel 7 intersection forms multiple rhombus expansion slots，And every a segment distance, one cut-off is formed by belling 2.2，When motor exhaust blows to gas channel 7，A part shunts along gas channel 7，A part passes through drainage screen 2 bulk filter，Partial tail gas along gas channel 7 shunting can produce different degrees of turbulent flow when through expansion slot and cut-off，Form the shunting of multiple directions，The black smoke granule in tail gas is enable fully to be captured on drainage screen 2 body，When black smoke granule capturing to a certain amount of when，Can be burnt under the high temperature of engine exhaust formation CO₂, thus realizing the function of filter regeneration.

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 in cellular micropore 3.4 on next door 3.3, 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 8 and fog-spray nozzle 9, and water inlet pipe 8 is connected with fog-spray nozzle 9, and fog-spray nozzle 9 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.

Operation principle：The present invention is fabricated to honeycomb ceramic carrier using cordierite, and be built in exhaust purifier of diesel engine, the waste gas inlet exhaust gas 4 with black smoke granule that Diesel engine is discharged enter, single filter through drainage screen 2, carry out cascade filtration 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 filtered to be caught on next door 3.3, 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; black smoke granule on next door 3.3 can progressively burn and aoxidize; the purifying rate of black smoke granule about reaches more than 85%, and when reaction temperature reaches 500 degrees Celsius, catalyst and black smoke particle reaction are thus burn completely（Catalysis burning）, now the purifying rate of black smoke granule is up to more than 90%.

Claims (3)

1. one kind no black smoke exhaust gas filter, including Rose Box（1）It is characterised in that：Described Rose Box（1）Inside it is provided with drainage screen（2）And ceramic honeycomb carrier（3）, drainage screen（2）On be provided with oblique backfin（2.1）With longitudinal belling（2.2）, 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（8）And fog-spray nozzle（9）, water inlet pipe（8）With fog-spray nozzle（9）It is connected, fog-spray nozzle（9）Stretch in filter, spraying liquid adopts the aqueous sodium carbonate of pH10.

2. one kind according to claim 1 no black smoke exhaust gas filter it is characterised in that：Described pore（3.1）Hole count be 600 holes/square inch.

3. one kind according to claim 1 and 2 no black smoke exhaust gas filter it is characterised in that：Described next door（3.3）Thickness be 0.13 ~ 0.14mm.