CN111420713A

CN111420713A - Regeneration device for catalytic converter of automobile engine

Info

Publication number: CN111420713A
Application number: CN202010415098.2A
Authority: CN
Inventors: 张洪东
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2020-07-17
Anticipated expiration: 2040-05-15
Also published as: CN111420713B

Abstract

The invention discloses a regeneration device of a catalytic converter of an automobile engine; the problem that particulate matters are not thoroughly cleaned in the regeneration process of the catalytic converter of the automobile engine is solved; the technical scheme includes that the device comprises a regeneration furnace, a cooling dust removal device, a smoke filtering device and an active carbon filtering box which are sequentially connected, wherein the regeneration furnace is used for heating and incinerating colloid smoke carbon attached to a catalytic converter into gaseous substances, and the gaseous substances sequentially enter the cooling dust removal device, the smoke filtering device and the active carbon filtering box through the regeneration furnace to be cooled, filtered and deodorized and then discharged into the atmosphere.

Description

Regeneration device for catalytic converter of automobile engine

Technical Field

The invention relates to an after-treatment device for purifying tail gas of an automobile engine, in particular to a regeneration device of a catalytic converter of the automobile engine.

Background

As vehicle reserves continue to increase, the total amount of emissions pollutants generated by the vehicle continues to rise. The automotive emission pollutants include heavy metal pollutants, sulfur oxides, and the like, in addition to the main CO, HC, NOx, and particulates. The automobile exhaust aftertreatment catalyst products are various, the gasoline engine mainly uses a three-way catalytic converter (TWC) and a Gasoline Particulate Filter (GPF), and the diesel engine mainly uses an oxidation catalyst (DOC), a particulate filter (DPF), a selective reduction catalyst (SCR), a partial flow oxidation particulate filter (POC) and the like. The catalyst in use can have the phenomena of efficiency reduction, coating shedding, mechanical damage and the like, wherein the particle catcher (DPF, GPF) mainly has the function of filtering particulate matters and black smoke, but the more the particle catcher is accumulated along with the time, the blockage is caused, the back pressure of the engine is caused to rise rapidly, the normal work of the engine is influenced, even the flameout is caused, and the most serious condition is that uncontrolled regeneration (uncontrolled regeneration) is caused, so that the DPF carrier is directly burnt out, and the loss and the potential safety hazard are caused. Therefore, certain equipment and a method are needed to eliminate the particles, the regeneration method comprises the steps of electric heating, catalyst oxidation, post-spraying to increase the temperature of tail gas and the like to eliminate the particles, and the conventional liquid ultrasonic cleaning is adopted for treating the particles; or by compressed air purge. The solution of blowing the DPF by compressed air is hardly perfect, because the sticky adhesion of the gum and soot bands in the DPF is difficult to remove completely by blowing. The consumable cleaning liquid of the ultrasonic liquid cleaning machine has the advantages of high difficulty in subsequent pollution discharge treatment, complex process flow and low efficiency.

Disclosure of Invention

The invention overcomes the defects of the prior art, provides the regeneration device of the catalytic converter of the automobile engine, and solves the problem that the cleaning of particulate matters is not complete in the regeneration process of the catalytic converter of the automobile engine.

In order to achieve the above object, the present invention is achieved by the following technical solutions.

Automobile engine catalytic converter regenerating unit, including regenerator, cooling dust collector, smog filter equipment and the active carbon rose box that connects gradually, the regenerator is used for heating the adnexed colloid type cigarette carbon thing of catalytic converter and ashing into the gaseous state thing, and the gaseous state thing gets into cooling dust collector, smog filter equipment and the air outlet of active carbon rose box cooling filtration in proper order through the regenerator and gets rid of the atmosphere after the peculiar smell.

The rotary air knife is arranged in the regeneration furnace and comprises an air inlet quick connector, a bearing seat, a bearing, a connecting pipe and a conical air knife air outlet which are sequentially connected, and the air inlet quick connector of the rotary air knife is connected with an air supply device through a high-pressure gas pipeline.

The cooling and dust removing device is provided with an air inlet and an air outlet, a circuitous gas traveling path is formed between the air inlet and the air outlet of the cooling and dust removing device through a plurality of partition plates, the cooling and dust removing device is provided with a water inlet and a water outlet, and the water inlet is connected with a cooling water tank; and a fan is connected between the air outlet of the cooling and dust removing device and the air inlet of the smoke filtering device.

Furthermore, the device also comprises a box body, wherein the regeneration furnace, the cooling and dust removing device, the smoke filtering device and the activated carbon filter box are arranged in the box body, the box body is provided with an openable structure, and the bottom of the box body is provided with a travelling mechanism.

Furthermore, the box is provided with blowing room and filter chamber, the regenerator sets up at blowing room, cooling dust collector, smog filter equipment and active carbon rose box set up at the filter chamber, blowing room is provided with blows grey room door, the filter chamber is provided with movable buckle.

Furthermore, a plurality of layers of activated carbon filter screens are horizontally arranged in the activated carbon filter box, an air inlet is formed in the bottom of the activated carbon filter box, and an air outlet is formed in the top of the activated carbon filter box.

Furthermore, a plurality of layers of push-pull tracks are horizontally arranged in the activated carbon filter box, and the activated carbon filter screen is connected to the push-pull tracks in a sliding mode.

Furthermore, the regeneration furnace comprises a furnace body, and a heating ceramic furnace core is arranged in the furnace body.

Furthermore, the bottom of the heating ceramic furnace core is connected with a gaseous substance collecting cover, the bottom of the gaseous substance collecting cover is connected with an air outlet pipeline through an elbow, and the elbow is connected with a rotary air knife, so that an air knife air outlet of the rotary air knife is perpendicular to the bottom of the gaseous substance collecting cover.

Further, the air supply device is a compressed air storage tank.

Compared with the prior art, the invention has the beneficial effects that.

The DOC and DPF simulation device simulates the working environment of the DOC and DPF, the DOC and DPF are arranged in a regeneration furnace, the temperature rises to 580-680, the colloidal soot carbon of the DOC and DPF is quickly ashed at high temperature, a lower rotary oxygen supply switch is opened, air is automatically and rotatably sprayed on the surfaces of the DOC and DPF in a fan shape under the reaction of air spraying by an air knife, most of ash in the DOC and DPF is directly blown out, and the air enters a smoke filtering device after being cooled by a cooling and dust removing device and filtered by large-particle dust, is filtered by active carbon, so that peculiar smell can be removed, and the air is directly discharged into the atmosphere. After the combustion work is finished, the air knife is used for automatically rotating and blowing the residual ash in the blowing chamber.

According to the invention, through the rotary oxygen supply and purging function of the air knife at the lower part of the regeneration furnace, colloid carbon pollutants which are difficult to remove can be quickly and efficiently removed from the surfaces of DOC and DPF; the pollutant gas that later can be to the desorption through multi-stage filtration device filters and purifies the atmosphere of directly discharging into, this device compares with the equipment that leans on compressed air to sweep, and the burning in the rotatory oxygen suppliment stove of bottom sweeps, and simple structure, fast, reliable, no additional power, no consumptive material, energy saving and consumption reduction, the working face is swept evenly, and the ash discharge is quick, can solve DOC, DPF's regeneration problem. Compared with liquid ultrasonic waves, the dust removal and cooling device can be used without being cleaned for a long time, is convenient for later-stage waste treatment, is simple and reliable, and has no pollution to the environment.

Drawings

FIG. 1 is a schematic view showing the external structure of a catalytic converter regeneration apparatus according to the present invention;

FIG. 2 is a schematic view of the external structure of the regenerating furnace according to the embodiment;

FIG. 3 is an exploded view of FIG. 2;

FIG. 4 is a schematic view of the connection between a pollutant collecting hood disposed at the bottom of the regenerator and a gas outlet pipeline according to the embodiment;

FIG. 5 is an exploded view of FIG. 4;

FIG. 6 is an exploded view of the rotary air knife according to the embodiment;

FIG. 7 is a schematic diagram of an external structure of a three-stage wet dedusting cooling box according to an embodiment;

FIG. 8 is an exploded view of FIG. 7;

FIG. 9 is a schematic structural diagram of an activated carbon filter box according to an embodiment;

FIG. 10 is a schematic structural diagram of a purge fan according to an embodiment;

FIG. 11 is a schematic structural view of a cooling water tank according to an embodiment;

FIG. 12 is a schematic view of the internal connection of the case according to the embodiment.

Wherein, 1 is a box body, 101 is a soot blowing chamber, 102 is a filter chamber, 103 is a soot blowing chamber door, 104 is a movable buckle plate, and 105 is a universal wheel;

2, a regenerative furnace, 201, a heating furnace body, 202, a heating ceramic furnace core, 203, heat insulation cotton, 204, a fixing plate, 205, a power supply box, 206, an upper cover, 207, a heat insulation plate, 208, a sealing strip, 209, an air outlet pipeline, 210, an elbow, 211, a pollutant collecting cover, 212, a furnace ring, 213, a rotary air knife, 214, an air inlet quick connector, 215, a bearing seat, 216, a bearing, 217, a connecting pipe, 218, an air knife air outlet, 219, a high-pressure gas pipeline, 220, a connecting pipe, 221, a support, 222 and 223, fixing nuts;

3, a three-stage wet type dust removal and temperature reduction box, 301, a water outlet, 302, a partition plate, 303, a cover plate, 304, a fixing bolt and 305, a hinge;

4 is a smoke removing box, 5 is an active carbon filter box, and 501 is an active carbon filter screen;

6 is an air inlet, 7 is an air outlet, 8 is a blowing fan, and 9 is a cooling water tank.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail with reference to the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solution of the present invention is described in detail below with reference to the embodiments and the drawings, but the scope of protection is not limited thereto.

As shown in figure 1, the regeneration device of the catalytic converter of the automobile engine comprises a box body 1, wherein the box body 1 is divided into a soot blowing chamber 101 and a filter chamber 102, a regeneration furnace 2 is installed in the soot blowing chamber 101, a three-stage wet dust removal and temperature reduction box 3, a smoke removal box 4 and an active carbon filter box 5 are installed in the filter chamber 102, the soot blowing chamber 101 is provided with a soot blowing chamber door 103, the filter chamber 102 is provided with a movable buckle plate 104, and the bottom of the box body 1 is provided with a universal wheel 105.

As shown in fig. 12, an air outlet 7 of the regeneration furnace 2 is connected with an air inlet 6 of the three-stage wet dedusting and cooling box 3 through a pipeline, an air outlet 7 of the three-stage wet dedusting and cooling box 3 is connected with the air inlet 6 of the smoke removal box 4 through a pipeline, a purging fan 8 is arranged on the pipeline connecting the three-stage wet dedusting and cooling box 3 with the smoke removal box 4, the air outlet 7 of the smoke removal box 4 is connected with the air inlet 6 at the bottom of the activated carbon filter box 5, and the air outlet 7 at the top of the activated carbon filter box 5 is directly communicated with the atmosphere outside the box body 1 through a pipeline. The regeneration furnace 2 is used for heating and incinerating colloid type soot attached to the catalytic converter into gaseous substances, and the gaseous substances sequentially enter the three-stage wet dust removal cooling box 3, the smoke removal box 4 and the activated carbon filter box 5 through the gas outlet of the regeneration furnace 2 to be cooled, filtered and deodorized and then discharged into the atmosphere.

Specifically, as shown in fig. 2-5, a heating ceramic furnace core 202 is arranged in a heating furnace body 201 of a regeneration furnace 2, heat insulation cotton 203 is arranged between the heating furnace body 201 and the heating ceramic furnace core 202, the rear part of the heating furnace body 201 is connected with a power supply box 205 through a fixing plate 204, an upper cover 206 is arranged at the top of the heating furnace body 201, a heat insulation plate 207 is arranged on the inner side of the upper cover 206, a sealing strip 208 is arranged at the edge of the heat insulation plate 207, the whole heating furnace body 201 forms a sealed heating structure, the power supply box 205 provides electric heating for the heating ceramic furnace core 202, simulates the working environment of DOC and DPF, 5 kw is supplied by 380 v for heating for about 45 minutes, so that the temperature in the regeneration furnace 2 is raised to between 580 and 680, and the colloidal soot of the DOC and DPF; the bottom of regenerator 2 sets up gas outlet 7, regenerator 2's gas outlet 7 links to each other with the gas outlet pipe 209 that sets up in regenerator 2, gas outlet pipe 209's the other end is linked together through elbow 210 and bell-mouthed pollutant collection cover 211, be equipped with stove circle 212 in pollutant collection cover 211's inside, elbow 210's bottom is connected with rotation type air knife 213, as shown in fig. 6, rotation type air knife 213 is including the quick-operation joint 214 that admits air that connects gradually, bearing frame 215, bearing 216, connecting pipe 217 and conical air knife gas outlet 218, the quick-operation joint 214 that admits air of rotation type air knife 213 is connected with the compressed air storage tank through high-pressure gas pipeline 219. The oxygen supply switch of the high-pressure gas pipeline 219 is opened, oxygen is automatically sprayed on the surfaces of the DOC and the DPF in a fan-shaped rotating mode from the air knife air outlet 218 under the reaction action of gas spraying, most of ash in the DOC and the DPF is directly blown out, and the part of particle dust pollutants enter the three-stage wet dust removal cooling box 3 together through the air outlet pipeline 209 along with the oxygen.

As shown in fig. 7-8, the three-stage wet dedusting and cooling box 3 is also provided with an air inlet 6 and an air outlet 7, and is further provided with a water inlet 301 and a water outlet 301, a circuitous gas traveling path is formed between the air inlet 6 and the air outlet 7 of the three-stage wet dedusting and cooling box 3 through three partition plates 302, and the water inlet is connected with a cooling water tank 9; the inside of the three-stage wet dedusting and cooling box 3 is filled with water through the cooling water tank 9, so that the cooling water submerges 2/3 of the cavity inside the three-stage wet dedusting and cooling box 3, the mixed gas of the particle and dust pollutants entering from the air inlet 6 of the three-stage wet dedusting and cooling box 3 is mixed with the cooling water and pushes the cooling water to flow between the partition plates 302, meanwhile, the mixed gas of the particle and dust pollutants and the cooling water are subjected to heat exchange for cooling, larger particles in the pollutants are settled in the water, the exhaust port 7 of the three-stage wet dedusting and cooling box 3 is provided with a sieve plate and an extraction pipe for dewatering, the gas in the cooling water is dewatered from the exhaust port 7, and the cooling water after heat exchange is discharged through a pipeline connected with the water outlet 301; under the effect of the blower fan 8, gas enters the gas inlet 6 of the smoke removing box 4, is discharged after small particle pollutants in the gas are further filtered by the smoke removing box 4, and enters the gas inlet 6 of the activated carbon filter box 5 to absorb peculiar smell of the gas. The smoke removing box 4 adopts an electrostatic dust remover or a filter type dust remover.

As shown in fig. 9, two layers of push-pull tracks are horizontally arranged in the activated carbon filter box 5, each push-pull track is connected with one layer of activated carbon filter screen 501 in a sliding manner, and a handle is arranged on each activated carbon filter screen 501, so that the activated carbon filter screens 501 are convenient to replace, an air inlet 6 is arranged at the bottom of the activated carbon filter box 5, an air outlet 7 is arranged at the top of the activated carbon filter box, and the purpose is to enable air to enter from the lower part and be discharged from the upper part.

The device simulates the working environment of DOC and DPF, the DOC and DPF are placed in a heating ceramic furnace core 202 of a

regeneration furnace

2, 5 kilowatts are supplied with power by 380V for heating for about 45 minutes, the temperature rises to between 580-plus 680, the colloidal carbon of the DOC and DPF is rapidly ashed at high temperature, an oxygen supply switch is opened, an air knife air outlet 218 is under the reaction of gas injection, oxygen is automatically and rotatably injected on the surfaces of the DOC and the DPF in a fan shape, most of ash in the DOC and the DPF is directly blown out, the DOC and the DPF enters a smoke removal box 4 after being cooled by a three-stage wet type dust removal and temperature reduction box 3 and filtered by large-particle dust, and then is filtered by an active carbon filter box 5, so that peculiar smell can be removed and the. After the combustion is completed, the air knife is used for automatically rotating and blowing the residual ash in the soot blowing chamber 101.

The device can rapidly and efficiently remove colloid carbon soot pollutants which are difficult to remove from the surfaces of DOC and DPF through the rotating oxygen supply and blowing functions of the air knife at the lower part of the regeneration furnace; the pollutant gas that later can be to the desorption through multi-stage filtration device filters and purifies the atmosphere of directly discharging into, this device compares with the equipment that leans on compressed air to sweep, and the burning in the rotatory oxygen suppliment stove of bottom sweeps, and simple structure, fast, reliable, no additional power, no consumptive material, energy saving and consumption reduction, the working face is swept evenly, and the ash discharge is quick, can solve DOC, DPF's regeneration problem. Compared with liquid ultrasonic waves, the dust removal and cooling device can be used without being cleaned for a long time, is convenient for later-stage waste treatment, is simple and reliable, and has no pollution to the environment.

While the invention has been described in further detail with reference to specific preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The regeneration device of the catalytic converter of the automobile engine is characterized by comprising a regeneration furnace, a cooling and dedusting device, a smoke filtering device and an active carbon filter box which are sequentially connected, wherein the regeneration furnace is used for heating and incinerating colloid type smoke carbon substances attached to the catalytic converter into gaseous substances, and the gaseous substances sequentially enter the cooling and dedusting device, the smoke filtering device and the active carbon filter box through an air outlet of the regeneration furnace, are cooled, filtered and deodorized and then are discharged into the atmosphere;

the rotary air knife is arranged in the regeneration furnace and comprises an air inlet quick connector, a bearing seat, a bearing, a connecting pipe and a conical air knife air outlet which are sequentially connected, and the air inlet quick connector of the rotary air knife is connected with an air supply device through a high-pressure gas pipeline;

2. The automobile engine catalytic converter regenerating unit of claim 1, further comprising a box body, wherein the regenerating furnace, the temperature-reducing and dust-removing device, the smoke filtering device and the activated carbon filter box are arranged in the box body, the box body has an openable structure, and a traveling mechanism is arranged at the bottom of the box body.

3. The automotive engine catalytic converter regenerating unit according to claim 2, characterized in that the box body is provided with an ash blowing chamber and a filtering chamber, the regenerating furnace is arranged in the ash blowing chamber, the cooling and dust removing device, the smoke filtering device and the activated carbon filtering box are arranged in the filtering chamber, the ash blowing chamber is provided with an ash blowing chamber door, and the filtering chamber is provided with a movable buckle plate.

4. The automotive engine catalytic converter regenerating unit according to claim 1, characterized in that multiple layers of activated carbon filter screens are horizontally arranged in the activated carbon filter box, the bottom of the activated carbon filter box is provided with an air inlet, and the top is provided with an air outlet.

5. The regeneration device of the catalytic converter of the automobile engine as claimed in claim 4, wherein a plurality of layers of push-pull rails are horizontally arranged in the activated carbon filter box, and the activated carbon filter screen is slidably connected to the push-pull rails.

6. The automotive engine catalytic converter regeneration device of claim 1, wherein the regeneration furnace comprises a furnace body in which a heated ceramic wick is disposed.

7. The regeneration device of the catalytic converter of the automobile engine as claimed in claim 6, wherein the bottom of the heating ceramic furnace core is connected with a gaseous substance collecting cover, the bottom of the gaseous substance collecting cover is connected with an air outlet pipeline through an elbow, and the elbow is connected with the rotary air knife so that the air knife air outlet of the rotary air knife is perpendicular to the bottom of the gaseous substance collecting cover.

8. The automotive engine catalytic converter regeneration device of claim 1, wherein the air supply device is a compressed air storage tank.