CN206129373U

CN206129373U - But active regeneration's tail gas purification treatment device and diesel vehicle

Info

Publication number: CN206129373U
Application number: CN201620945314.3U
Authority: CN
Inventors: 罗万祥
Original assignee: Shenzhen City Best Purification Equipment Ltd Co
Current assignee: Shenzhen City Best Purification Equipment Ltd Co
Priority date: 2016-08-26
Filing date: 2016-08-26
Publication date: 2017-04-26
Anticipated expiration: 2026-08-26

Abstract

The utility model relates to a but active regeneration's tail gas purification treatment device and diesel vehicle. But active regeneration's tail gas purification treatment device includes ECU the control unit and purifying housing, the inside exhaust direction according to tail gas of purifying housing divide into first tail gas diffusion cavity in proper order, the 2nd tail -gas clean -up chamber, third carrier regeneration chamber, fourth tail -gas clean -up chamber and the 5th purification are collected and are held the chamber, tail gas inserts mouthful first tail gas diffusion cavity of intercommunication, tail gas discharge port intercommunication the 5th purifies to collect and holds the chamber, purification treatment tail gas DOC carrier filter core is installed in the 2nd tail -gas clean -up chamber, regenerative heater is installed in third carrier regeneration chamber, fourth tail -gas clean -up installs in the chamber DPF filter core of purification treatment tail gas granule, when the 2nd tail -gas clean -up chamber, when adsorption affinity decline is blockked up in fourth tail -gas clean -up chamber, ECU the control unit control regenerative heater heaies up and heats, DOC carrier filter core, the regeneration work of being heated of DPF filter core, tail gas granule high temperature burns into little dust discharges.

Description

It is a kind of can initiative regeneration device for purifying and treating tail gas and diesel vehicle

Technical field

This utility model is related to vent gas treatment field, and in particular to it is a kind of can initiative regeneration device for purifying and treating tail gas and Diesel vehicle.

Background technology

Diesel vehicle can produce substantial amounts of black smoke tail as burning is insufficient when road runs during load operation Gas, the main component of these black smokes have black smoke particulate matter PM, hydrocarbons HC, carbon monoxide CO, nitrogen oxide NOx, sulfide Deng wherein soot particulate（PM）Environment is not only polluted in a large amount of accumulations, and soot particulate matter can be sucked by human body（Predominantly PM10), in addition can enter human body pulmonary（Predominantly PM2.5), impact operating personnel's is healthy.

The purification product for being directed to these pollutant components can be connected or independent assortment use, to reach while purifying each The purpose of pollutant is planted, filter is roughly divided into following 3 class currently on the market：1. particulates in exhaust gas from diesel vehicle catcher DPF, mainly Process carbon soot particles（PM）, purifying rate is 95% or so；2. diesel vehicle oxidation catalyst DOC, mainly processes harmful gass（HC、 CO）, purifying rate is 70%-90%.3. diesel vehicle SCR denitrating systems：SCR SCR（Selective Catalytic Reduction）, this is the technology path that current international mainstream efficiently removes NOx in tail gas：Mainly for row NOx in gas, in uniform temperature（Generally 250 DEG C -450 DEG C）In the range of, NOx is resolved into harmless nitrogen by catalyst （N2）And water（H2O）.

Although above-mentioned filter there are respective handling characteristicss, all lack and regenerate self cleaning function, filter is used , will easily there is choking phenomenon because of the accumulation of carbon soot particles, reduce purification efficiency in time length, and user need to re-replace New filter, increased use cost.

Utility model content

For the tail gas discharged by more preferable purification of diesel car, this utility model provides a kind of reasonable in design, can lead Dynamic regeneration DOC+DPF filter elements, the device for purifying and treating tail gas of good purification, concrete technical scheme are as follows：

It is a kind of can initiative regeneration device for purifying and treating tail gas, including ECU control units and purification housing, purification housing before End is provided with tail gas access port, and tail gas enters purification housing from tail gas access port and carries out discharging from tail gas outlet after purified treatment, Purification enclosure interior is followed successively by the first tail gas diffusion chamber, the second tail gas clean-up chamber, the 3rd carrier regeneration according to the discharge directions of tail gas Cavity volume is collected in chamber, the 4th tail gas clean-up chamber and the 5th purification, and tail gas access port connects the first tail gas diffusion chamber, and tail gas outlet connects Cavity volume is collected in logical 5th purification, and the second tail gas clean-up chamber is provided with purified treatment tail gas DOC carrier filter elements, the 3rd carrier regeneration Chamber is provided with regenerative heater, and the 4th tail gas clean-up chamber is provided with the DPF filter elements of purified treatment exhaust particulate, when the second tail gas it is net When changing chamber, the 4th tail gas clean-up chamber blocking absorption affinity decline, the control regenerative heater intensification heating of ECU control units, DOC are carried Body filter element, DPF filter elements are heated reproduction operation, and exhaust particulate high-temp combustion is discharged into little dust.

Preferably, the DOC carriers filter element includes ceramic monolith and precious metal coating, and ceramic monolith is provided with multiple logical Hole, ceramic monolith surface-coated precious metal coating, when temperature is warmed up to 260 DEG C～400 DEG C, the HC in tail gas in tail gas, CO catalysis becomes water and CO2, while Nox is resolved into nitrogen and oxygen, purifying rate is 80%～90%.

Preferably, the air inlet and steam vent of adjacent distributions are provided with inside DPF filter elements, air inlet and steam vent are unidirectionally open And it is in opposite direction, air inlet inwall is provided with honeycomb ceramic filter, and honeycomb ceramic filter retention absorption tail gas granule, regeneration add Hot device heats up after heating, and the exhaust particulate burning of retention becomes less dust and arranges from steam vent through honeycomb ceramic filter Go out.

Preferably, the ECU control units include main control module, pressure detecting module and judge module, pressure detecting Module detects the pressure value of the first tail gas diffusion chamber by pressure transducer, and pressure value is converted into electric signal transmission to judgement Module, judge module are preset with pressure value, when the pressure value for detecting is more than the value, main control module control regenerative heater Running.

Preferably, the regenerative heater includes inverter, resistance heater, relay, controlling switch, and ECU controls are single Unit controls inverter, resistance heater operation by relay, controlling switch.

Preferably, ECU control units also include circulation work time block, and circulation work time block passes through time relay Device is preset with T1 times and T2 times, circulates work time block self-clocking, tail gas after the purified treatment T1 time, then The raw heater starting cleaning T2 times, and then enter back into next circulation work.

Preferably, precious metal coating is the metal coating of platinum or rhodium or palladium.

Preferably, the first tail gas diffusion chamber, the 3rd carrier regeneration chamber, the 5th purification is collected cavity volume and is fitted with pressure sensing Device, the 3rd carrier regeneration chamber are also equipped with temperature sensor.

A kind of diesel vehicle, a kind of of above-mentioned technical characteristic is provided with exhaust emissions can be at the tail gas clean-up of initiative regeneration Reason device.

The beneficial effects of the utility model：After the discharged tail gas of diesel vehicle enters purification housing, Jing DOC carrier filter elements, DPF Filter element double purified is discharged after filtering, and gross decontamination rate reaches more than 97%, when tail overstock on DOC carrier filter elements, DPF filter elements When aerated particle is excessive, pressure transducer detect back-pressure it is excessive when, ECU control units control regenerative heater heat up plus Heat, exhaust particulate with temperature improve and combustion oxidation into little dust with tail gas venting, so as to cleaning of DOC carrier filter elements, DPF filters Core, completes reproduction operation, and full process automatization does not interfere with the normally travel of diesel vehicle.

Description of the drawings

Schematic diagram when Fig. 1 is device for purifying and treating tail gas cleaning of off-gas of the present utility model；

Control principle flow chart when Fig. 2 is device for purifying and treating tail gas regeneration filter element of the present utility model；

Fig. 3 is the operating diagram of DPF filter elements of the present utility model.

Specific embodiment

Below in conjunction with the accompanying drawings, specific embodiment of the present utility model is described further：

In description of the present utility model, it should be noted that term " " center ", " on ", D score, "left", "right", " perpendicular Directly ", the orientation or position relationship of the instruction such as " level ", " interior ", " outward " is, based on orientation shown in the drawings or position relationship, to be only For the ease of describing this utility model and simplifying description, rather than it is specific to indicate or imply that the position of indication or element must have Orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " the One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or implying relative importance.

As shown in figure 1, it is a kind of can initiative regeneration device for purifying and treating tail gas, including ECU control units and purification housing, ECU control units are driven using 24V voltages, and purification housing forward end is provided with tail gas access port, and tail gas enters net from tail gas access port Change after housing carries out purified treatment and discharge from tail gas outlet, purification enclosure interior is divided into first according to the discharge directions of tail gas Cavity volume is collected in tail gas diffusion chamber 1, the second tail gas clean-up chamber 2, the 3rd carrier regeneration chamber 3, the 4th tail gas clean-up chamber 4 and the 5th purification 5, tail gas access port connects the first tail gas diffusion chamber 1, and cavity volume 5, the second tail gas clean-up are collected in the 5th purification of tail gas outlet connection Chamber 2 is provided with purified treatment tail gas DOC carriers filter element 21, and the 3rd carrier regeneration chamber 3 is provided with regenerative heater 31, regeneration heating Device 31 is driven using 220V voltages, and the 4th tail gas clean-up chamber 4 is provided with the DPF filter elements 41 of purified treatment exhaust particulate.

During cleaning of off-gas, tail gas forward direction is successively from the first tail gas diffusion chamber 1, the second tail gas clean-up chamber 2, the 3rd carrier regeneration Chamber 3, the 4th tail gas clean-up chamber 4 and the 5th purification are collected cavity volume 5 and are passed through, and exhaust particulate is trapped within DOC carriers filter element 21 and DPF On filter element 41, when regeneration cleaning DOC carriers filter element 21 and DPF filter elements 41 is needed, ECU control units control regenerative heater 31 Heat up heating, when uniform temperature condition is reached,

DOC carriers filter element 21, DPF filter elements 41 is heated reproduction operation, and exhaust particulate high-temp combustion is into little dust with tail gas one Rise and discharge.

Specifically, the DOC carriers filter element 21 includes ceramic monolith and precious metal coating, and ceramic monolith is provided with multiple logical Hole, ceramic monolith surface-coated precious metal coating, precious metal coating are platinum or the metal coating of rhodium or palladium, and temperature heats up During to 260 DEG C～400 DEG C, preferably 350 DEG C, HC, the CO in tail gas is become water and CO2 by the catalysis of precious metal coating, while Nox is resolved into nitrogen and oxygen, purifying rate is 80%～90%.

Specifically, as shown in figure 3, the air inlet 411 and steam vent 412 of adjacent distributions, air inlet are provided with inside DPF filter elements 41 Hole 411 and steam vent 412 are unidirectionally open and in opposite direction, and 411 inwall of air inlet is provided with honeycomb ceramic filter 413, wall-flow type Ceramic honey comb 413 retains absorption tail gas granule, and regenerative heater 31 heats up after heating, and the exhaust particulate burning of retention becomes less Dust discharge through honeycomb ceramic filter 413 from steam vent 413.

Specifically, the ECU control units include main control module, pressure detecting module and judge module, pressure detecting Module detects the pressure value of the first tail gas diffusion chamber 1 by pressure transducer, and pressure value is converted into electric signal transmission to sentencing Disconnected module, judge module are preset with pressure value, and the particle packing thing on DOC carriers filter element 21 and DPF filter elements 41 gathers certain During amount, because DOC carriers filter element 21 and DPF filter elements 41 are blocked, the air pressure in the regeneration of the first tail gas diffusion chamber the 1, the 3rd chamber 3 can be obvious Increase, when the pressure value for detecting is preset with pressure value more than judge module, main control module can control regenerative heater 31 Heating, DOC carriers filter element 21 and DPF filter elements 41 realize automated cleaning.

Specifically, the regenerative heater 31 includes inverter, resistance heater, relay, controlling switch, ECU controls Unit controls invertor operation by relay, controlling switch, and inverter is that direct current energy is transformed into alternating current, relay control System is simple, is swift in motion, and service life is also long, is suitable as main control module electric control gear resistance heater quickly the Heat up in three carrier regeneration chambers 3 heating, and DOC carriers filter element 21 and DPF filter elements 41 are heated.

Specifically, ECU control units also include circulation work time block, and circulation work time block passes through

The time relay is preset with T1 times and T2 times, and the time required to the T1 times are cleaning of off-gas, the T2 times are cleaning The time required to filter element, work time block self-clocking, after the DOC+DPF filter element Regeneration Treatment T1 times, the positive normal open of tail gas are circulated The DOC+DPF filter element T2 times are spent, and then enters back into next DOC+DPF filter elements Regeneration Treatment T1, the T2 times one arrive, follow automatically Tail gas clean-up treatment process is looped back to, above-mentioned operation is realized so as to constantly circulate, it is ensured that DOC carriers 4 and DPF carriers 10 are periodically fixed When automatic regeneration, it is without the need for the manual record time, very convenient.

Specifically, the first tail gas diffusion chamber 1, the purification of the 3rd carrier regeneration chamber the 3, the 5th is collected cavity volume 5 and is fitted with pressure Sensor 6, pressure transducer 6 can real-time monitoring air pressure, be easy to ECU control units control, the 3rd carrier regeneration chamber 3 is also equipped with Temperature sensor 7, the temperature in the 3rd carrier regeneration chamber 3 of real-time monitored.

In a word, when device for purifying and treating tail gas of the present utility model is arranged on cleaning of off-gas on diesel vehicle, can initiative regeneration Cleaning filter element, need not take purification housing apart and the carbon granule piled up on DOC carriers filter element 21, DPF filter elements 41 can be discharged, and not Diesel vehicle traveling is affected, easy to use, simple to operate, satisfaction uses needs.

Above content is with reference to specific preferred implementation further detailed description of the utility model, it is impossible to Identification is of the present utility model to be embodied as being confined to these explanations, for the ordinary skill of this utility model art For personnel, without departing from the concept of the premise utility, some simple deduction or replace can also be made, should be all regarded To belong to protection domain of the present utility model.

Claims

1. it is a kind of can initiative regeneration device for purifying and treating tail gas, including ECU control units and purification housing, purify housing forward end Tail gas access port is provided with, tail gas enters purification housing from tail gas access port and carries out discharging from tail gas outlet after purified treatment, its It is characterised by：Purification enclosure interior according to the discharge directions of tail gas be divided into the first tail gas diffusion chamber, the second tail gas clean-up chamber, the Cavity volume is collected in three carrier regeneration chambers, the 4th tail gas clean-up chamber and the 5th purification, and tail gas access port connects the first tail gas diffusion chamber, tail Cavity volume is collected in the 5th purification of gas outlet connection, and the second tail gas clean-up chamber is provided with purified treatment tail gas DOC carrier filter elements, the Three carrier regeneration chambers are provided with regenerative heater, and the 4th tail gas clean-up chamber is provided with the DPF filter elements of purified treatment exhaust particulate, when When second tail gas clean-up chamber, the 4th tail gas clean-up chamber blocking absorption affinity decline, ECU control units control regenerative heater heats up and adds Heat, DOC carrier filter elements, DPF filter elements are heated reproduction operation, and exhaust particulate high-temp combustion is discharged into little dust.

2. it is according to claim 1 it is a kind of can initiative regeneration device for purifying and treating tail gas, it is characterised in that：The DOC Carrier filter element includes ceramic monolith and precious metal coating, and ceramic monolith is provided with multiple through holes, and ceramic monolith surface-coated is expensive Heavy metal coating, when temperature is warmed up to 260 DEG C～400 DEG C, HC, CO catalysis in the tail gas in tail gas becomes water and CO2, together When Nox is resolved into nitrogen and oxygen, purifying rate is 80%～90%.

3. it is according to claim 1 it is a kind of can initiative regeneration device for purifying and treating tail gas, it is characterised in that：DPF filter elements Inside is provided with the air inlet and steam vent of adjacent distributions, and air inlet and steam vent are unidirectionally open and in opposite direction, air inlet inwall Honeycomb ceramic filter is provided with, honeycomb ceramic filter retention absorption tail gas granule, regenerative heater heat up after heating, retention The dust that exhaust particulate burning becomes less is discharged through honeycomb ceramic filter from steam vent.

4. it is according to claim 1 it is a kind of can initiative regeneration device for purifying and treating tail gas, it is characterised in that：The ECU Control unit includes main control module, pressure detecting module and judge module, and pressure detecting module is detected by pressure transducer The pressure value of the first tail gas diffusion chamber, and pressure value is converted into electric signal transmission to judge module, judge module is preset with pressure Force value, when the pressure value for detecting is more than the value, main control module control regenerative heater running.

5. it is according to claim 1 it is a kind of can initiative regeneration device for purifying and treating tail gas, it is characterised in that：It is described again Raw heater includes inverter, resistance heater, relay, controlling switch, and ECU control units pass through relay, controlling switch Control inverter, resistance heater operation.

6. it is according to claim 1 it is a kind of can initiative regeneration device for purifying and treating tail gas, it is characterised in that：ECU is controlled Unit also includes circulation work time block, when circulation work time block is preset with T1 times and T2 by the time relay Between, circulate work time block self-clocking, tail gas after the purified treatment T1 time, regenerative heater start cleaning T2 when Between, and then enter back into next circulation work.

7. it is according to claim 2 it is a kind of can initiative regeneration device for purifying and treating tail gas, it is characterised in that：Precious metal Coating is the metal coating of platinum or rhodium or palladium.

8. it is according to claim 1 it is a kind of can initiative regeneration device for purifying and treating tail gas, it is characterised in that：First tail Gas diffusion chamber, the 3rd carrier regeneration chamber, the 5th purification are collected cavity volume and are fitted with pressure transducer, and the 3rd carrier regeneration chamber is also pacified Equipped with temperature sensor.

9. a kind of diesel vehicle, it is characterised in that：The arbitrary described one kind of the claims 1～8 is installed at exhaust emissions Can initiative regeneration device for purifying and treating tail gas.