CN106523081A - Trapezoid ceramic honeycomb carrier - Google Patents

Abstract

The invention relates to a trapezoid ceramic honeycomb carrier which comprises a columnar body with a trapezoidal cross section, the columnar body is densely provided with air holes (1) in the axial direction, one end of each air hole (1) is provided with an opening (6), the other end of each air hole (1) is provided with a plugging face (2), each plugging face (2) and the corresponding opening (6) are arranged in a spaced manner, a separating wall (3) is arranged between every two adjacent air holes (1), and each separating wall (3) is provided with micropores (4) distributed in a honeycomb shape; and each separating wall (3) is coated with a catalyst coating (7), the columnar body is installed in an outer sleeve, and the outer sleeve comprises an outer plate (12.1), an inner plate (12.2) and a corrugated plate (12.3). The trapezoid ceramic honeycomb carrier is good in integrality, and the filter area is enlarged within limited space to the maximum degree; by means of the micropores in the separating walls, black smoke particles in waste gas can be effectively filtered, and can be burned under the effect of the catalyst coatings; and meanwhile, the strength is high, and the service life is long.

Description

A kind of trapezoidal ceramic honeycomb carrier

Technical field

The present invention relates to a kind of trapezoidal ceramic honeycomb carrier, for purifying vehicle exhaust.Belong to Ceramic manufacturing equipment technical field.

Background technology

At present, the automobile exhaust purifier of unobstructed application both at home and abroad, its catalyst carrier typically all adopt ceramic honeycomb carrier, and this carrier is to add adhesive with synthesis of dichroite raw material, burn and lose agent, blended spice, pugging, extrusion, drying, sintering, then impregnated catalyst re-dry is prepared.During use, exhaust purifier metal shell stage casing is put into.

Conventional ceramic honeycomb carrier is generally square cylinder, and when the ceramic honeycomb carrier of this kind of shape is loaded in the metal shell of exhaust purifier, often cause the space between ceramic honeycomb carrier and metal shell big, prevent space of the exhaust purifier from effectively utilizes automobile chassis, and some producers are in order to plug the gap, the ceramic honeycomb carrier of small dimension can be added in gap, this can cause the globality poor of the ceramic honeycomb carrier in metal-back, resistance during increase vent gas treatment, reduce tail gas clean-up effect, and honeycomb substrate is when mounted, complex operation, efficiency is low；The pore of this kind of honeycomb substrate is clear opening simultaneously, poor to the waste gas purification effect containing black smoke particle；Existing honeycomb substrate does not have outer sleeve, therefore easily weares and teares, and intensity difference, service life are short.

The content of the invention

It is an object of the invention to overcome above-mentioned deficiency, there is provided a kind of trapezoidal ceramic honeycomb carrier, this ceramic honeycomb carrier good integrity, good purification and easy for installation, cylindrical body are arranged in outer sleeve, not easy to wear, and intensity is high, and service life is short.

The object of the present invention is achieved like this：

A kind of trapezoidal ceramic honeycomb carrier, including cylindrical body, feature is：The section of the cylindrical body is trapezoidal, the cylindrical body includes the first arc-shaped edges, second arc-shaped edges, first hypotenuse and the second hypotenuse, first arc-shaped edges, second hypotenuse, second arc-shaped edges and the first hypotenuse are joined end to end successively, connecting place adopts round-corner transition, the cylindrical body is densely covered with pore in the axial direction, one end of the pore is opening, the other end is provided with closure face, the closure face and open space arrangement, the two neighboring pore is provided with next door, it is provided with next door in cellular micropore, catalyst coat is coated with next door, the honeycomb substrate also includes outer sleeve, cylindrical body is arranged in outer sleeve, the outer sleeve includes outside plate, inner panel and the corrugated plating positioned at outside plate and inner panel.

A kind of trapezoidal ceramic honeycomb carrier of the present invention, the hole count of its pore is 600 holes/square inch.

A kind of trapezoidal ceramic honeycomb carrier of the present invention, the thickness in its next door is 0.13 ~ 0.14mm.

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

A kind of trapezoidal ceramic honeycomb carrier of the present invention, good integrity increases filter area in the confined space to greatest extent, and easy for installation, good purification；Micropore on next door can effectively filter the black smoke particle in waste gas, and black smoke particle can be burned off in the presence of catalyst coat, further increase tail gas clean-up effect；Cylindrical body is arranged in outer sleeve, and outer sleeve includes outside plate, inner panel and positioned at outside plate and the corrugated plating of inner panel, therefore honeycomb substrate is not easy to wear, and intensity is high, long service life.

Description of the drawings

Fig. 1 is a kind of schematic cross-section of trapezoidal ceramic honeycomb carrier of the present invention.

Fig. 2 is a kind of partial axial section figure of trapezoidal ceramic honeycomb carrier of the present invention.

Fig. 3 is the structural representation in the next door of the present invention.

Fig. 4 is the sectional view after the outer sleeve of the present invention launches.

In figure：

Pore 1,

Closure face 2,

Next door 3,

Micropore 4,

Tail gas 5,

Opening 6,

Catalyst coat 7,

First arc-shaped edges 8,

Second arc-shaped edges 9,

First hypotenuse 10,

Second hypotenuse 11,

Outside plate 12.1,

Inner panel 12.2,

Corrugated plating 12.3.

Specific embodiment

Referring to Fig. 1-4, the present invention relates to a kind of trapezoidal ceramic honeycomb carrier, it includes the trapezoidal cylindrical body in section, the cylindrical body includes the first arc-shaped edges 8, second arc-shaped edges 9, first hypotenuse 10 and the second hypotenuse 11, first arc-shaped edges 8, second hypotenuse 11, second arc-shaped edges 9 and the first hypotenuse 10 are joined end to end successively, connecting place adopts round-corner transition, the cylindrical body is densely covered with pore 1 in the axial direction, one end of the pore 1 is opening 6, the other end is provided with closure face 2, 6 arranged for interval of the closure face 2 and opening, the two neighboring pore 1 is provided with next door 3, it is provided with next door 3 in cellular micropore 4, catalyst coat 7 is coated with next door 3.

The honeycomb substrate also includes outer sleeve, and cylindrical body is arranged in outer sleeve, and the outer sleeve includes outside plate 12.1, inner panel 12.2 and positioned at outside plate 12.1 and the corrugated plating 12.3 of inner panel 12.2.

Wherein, the hole count of pore 1 is 600 holes/square inch, and the thickness in next door 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 with black smoke particle that Diesel engine is discharged is entered from the opening 6 of pore 1, as pore 1 is opening 6 at one end, and be then closure face 2 in the other end, therefore waste gas can be by the next door 3 with micropore 4, then discharge from the opening 6 of adjacent air holes 1, due to the diameter of black smoke particle it is big compared with micropore 4, therefore the black smoke particle in waste gas will be caught on next door 3 by filtering, and air-flow is then passed through from micropore 4.

Active rare earth of the catalyst coat 7 containing noble metal, Main Ingredients and Appearance have Pt, Pd, Rh, Al₂O₃, Ce, La, Zr, Cu, Mn, the waste gas of diesel combustion（The predominantly pernicious gas such as CO, HC, NOx）During through micropore 4, coating the catalyst coat 7 on next door 3 will strengthen CO, HC, NO_xThe activity of three kinds of gases, promotes which to carry out certain oxidationreduction chemical reaction, and wherein CO is oxidized to colourless nontoxic carbon dioxide at high temperature, and HC compounds resolve 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 7, the black smoke particle on next door 3 can progressively burn and aoxidize, and the purifying rate of black smoke particle about reaches more than 85%, when reaction temperature reaches 500 Degree Celsius when catalyst and black smoke particle reaction so as to burning completely（Catalysis burning）, now the purifying rate of black smoke particle is up to more than 90%.

Claims (3)

1. a kind of trapezoidal ceramic honeycomb carrier, including cylindrical body, it is characterised in that：The section of the cylindrical body is trapezoidal, and the cylindrical body includes the first arc-shaped edges（8）, the second arc-shaped edges（9）, the first hypotenuse（10）With the second hypotenuse（11）, first arc-shaped edges（8）, the second hypotenuse（11）, the second arc-shaped edges（9）With the first hypotenuse（10）Join end to end successively, connecting place adopts round-corner transition, the cylindrical body to be densely covered with pore in the axial direction（1）, the pore（1）One end be opening（6）, the other end is provided with closure face（2）, the closure face（2）And opening（6）Arranged for interval, the two neighboring pore（1）It is provided with next door（3）, next door（3）On be provided with cellular micropore（4）, next door（3）On be coated with catalyst coat（7）, also including outer sleeve, cylindrical body is arranged in outer sleeve the honeycomb substrate, and the outer sleeve includes outside plate（12.1）, inner panel（12.2）With positioned at outside plate（12.1）With inner panel（12.2）Corrugated plating（12.3）.

2. a kind of trapezoidal ceramic honeycomb carrier according to claim 1, it is characterised in that：The pore（1）Hole count be 600 holes/square inch.

3. a kind of trapezoidal ceramic honeycomb carrier according to claim 1 and 2, it is characterised in that：The next door（3）Thickness be 0.13 ~ 0.14mm.