CN221299293U - Tail gas treatment device and be equipped with its car - Google Patents

Abstract

The application relates to an exhaust gas treatment device and an automobile provided with the same. The shell is provided with an air inlet, a discharge hole and a liquid inlet, the air inlet is connected with an air outlet of the wall-flow particle catcher, the discharge hole is connected with a feed inlet of the selective catalyst, and the liquid inlet is connected with a liquid outlet of the urea injector. The rotary heating piece is arranged in the shell and can rotate, and is used for heating urea solution from the liquid inlet and tail gas from the air inlet.

Description

Tail gas treatment device and be equipped with its car

Technical Field

The application relates to the technical field of tail gas treatment, in particular to a tail gas treatment device and an automobile with the same.

Background

The conventional art treats nitrogen oxides (NO _x) in exhaust gas by employing aftertreatment devices including an oxidation catalyst (DOC), a wall-flow particulate trap (DPF), a Selective Catalyst (SCR), and an ammonia oxidation catalyst (ASC). A mixer is provided between the DPF and the SCR to mix the exhaust gas with the urea solution. In the mixer, the urea is decomposed by heat, forming ammonia and carbon dioxide. After the ammonia gas and the carbon dioxide are mixed with the tail gas, the mixed gas enters the SCR together, and nitrogen oxides in the tail gas can be converted into harmless nitrogen with the ammonia gas, so that the content of nitrogen oxides (NO _x) can be reduced.

However, since the decomposition reaction of urea is affected by temperature, the decomposition of urea is accompanied by side reactions, and urea crystal byproducts such as biuret, cyanuric acid, melamine and the like are formed, and most of these byproducts are water-insoluble solids, which cause clogging of SCR and affect the exhaust gas treatment effect.

Therefore, how to provide an exhaust gas treatment device capable of reducing urea crystallization is a technical problem to be solved.

Disclosure of utility model

Accordingly, it is necessary to provide an exhaust gas treatment device capable of reducing urea crystallization and an automobile provided with the same.

In a first aspect, the present application provides an exhaust gas treatment device comprising:

Wall-flow particle catcher;

A selective catalyst;

a urea injector;

The shell is provided with an air inlet, a discharge hole and a liquid inlet, the air inlet is connected with an air outlet of the wall-flow particle catcher, the discharge hole is connected with a feed inlet of the selective catalyst, and the liquid inlet is connected with a liquid outlet of the urea injector; and

The rotary heating piece is arranged in the shell and can rotate, and is used for heating urea solution from the liquid inlet and tail gas from the air inlet.

According to the tail gas treatment device, the rotary heating part is arranged in the shell, the movement direction of fluid can be changed through rotation of the rotary heating part, urea solution sprayed by the urea sprayer is effectively prevented from adhering to the inner wall of the shell, and therefore urea crystallization is reduced. And the rotary heating piece can also make wall flow type particle catcher exhaust tail gas and urea solution intensive mixing, promotes tail gas treatment's effect. Further, the rotary heating member can heat the urea solution and the tail gas to decompose crystal byproducts such as biuret, cyanuric acid, melamine and the like generated by the urea, thereby further reducing urea crystallization in the tail gas treatment device.

In some embodiments, the rotary heating member is rotatable about a vertical axis of rotation, and the liquid inlet is located above the rotary heating member.

In some embodiments, the air inlet and the discharge outlet are located on the same side wall of the housing.

In some of these embodiments, the exhaust treatment device further comprises a thermal insulation member disposed on a surface of the housing opposite the air inlet and the discharge outlet.

In some embodiments, the rotary heating member is disposed in the housing and divides the housing into an upper chamber and a lower chamber, the air inlet and the liquid inlet are located in the upper chamber, and the discharge outlet is located in the lower chamber.

In some embodiments, the rotary heating element is a fan for delivering air flow from the inlet and the inlet to the outlet.

In some embodiments, the fan has a blade and a heating element disposed on an upper surface of the blade.

In some of these embodiments, the exhaust treatment device further comprises an electronic control unit for controlling the temperature of the rotary heating member.

In some embodiments, the exhaust gas treatment device further comprises a first temperature sensor, a second temperature sensor and a third temperature sensor, wherein the first temperature sensor is connected with the air inlet, the second temperature sensor is connected with the discharge port, and the third temperature sensor is connected with the rotary heating element.

In some of these embodiments, the exhaust treatment device further comprises a nitrogen-oxygen sensor coupled to the air inlet.

In a second aspect, the present application provides an automobile of the exhaust gas treatment device according to the first aspect.

Drawings

Fig. 1 is a schematic structural diagram of an exhaust gas treatment device according to an embodiment.

Reference numerals illustrate:

100-tail gas treatment device;

1-wall-flow particle catcher, 2-selective catalyst, 3-urea injector, 4-shell, 5-rotary heating element, 6-heat preservation element, 7-electronic control unit, 8-first temperature sensor, 9-second temperature sensor, 10-third temperature sensor, 11-nitrogen-oxygen sensor, 12-oxidizing catalyst, 13-ammonia oxidation catalyst;

3 a-valve, 4 a-air inlet, 4 b-discharge outlet, 4 c-liquid inlet, 4 d-upper chamber, 4 e-lower chamber, 5 a-fan blade, 5 b-heating element.

Detailed Description

The present application will be described more fully hereinafter in order to facilitate an understanding of the present application. This application may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

In the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the description of the present application, it should be understood that the terms "center," "length," "width," "thickness," "upper," "lower," "vertical," "horizontal," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

In the present application, unless explicitly specified and limited otherwise, the terms "connected," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally formed, for example; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

An exhaust gas treatment device 100 according to an embodiment of the present application will be described in detail below with reference to the accompanying drawings. Fig. 1 is a schematic diagram of an exhaust gas treatment device 100 according to an embodiment of the present application. Referring to fig. 1, an exhaust gas treatment device 100 according to the present embodiment includes:

A wall-flow particle catcher 1;

A selective catalyst 2;

A urea injector 3;

The shell 4 is provided with an air inlet 4a, a discharge hole 4b and a liquid inlet 4c, the air inlet 4a is connected with an air outlet of the wall-flow particle catcher 1, the discharge hole 4b is connected with a feed inlet of the selective catalyst 2, and the liquid inlet 4c is connected with a liquid outlet of the urea injector 3; and

A rotary heating member 5 rotatably provided in the housing 4 for heating the urea solution from the liquid inlet 4c and the exhaust gas from the gas inlet 4 a.

It is understood that urea can decompose to form ammonia and carbon dioxide at about 130 ℃. When the temperature is 150-190 ℃, urea can undergo side reaction to generate biuret; byproducts such as cyanuric acid, cyanuric acid monoamide, cyanuric acid diamide and the like are further generated at 190-325 ℃, and urea can generate melamine at 325-350 ℃. Solid matters such as biuret, cyanuric acid monoamide, cyanuric acid diamide and melamine are difficult to dissolve in water, and large urea crystals can be accumulated to cause blockage of pipelines. The related researches show that the urea crystals can be rapidly decomposed at 300-400 ℃, so that the urea crystals generated in the system can be effectively reduced when the temperature of the system is controlled below 150 ℃ or above 300 ℃.

In one specific embodiment, the rotary heating member 5 is disposed in the housing 4 and divides the housing 4 into an upper chamber 4d and a lower chamber 4e, the air inlet 4a and the liquid inlet 4c are located in the upper chamber 4d, and the discharge port 4b is located in the lower chamber 4e.

In the present embodiment, the rotary heating member 5 is disposed in the housing 4 and divides the housing 4 into an upper chamber 4d and a lower chamber 4e, the wall-flow particle catcher 1, the air inlet 4a and the liquid inlet 4c of the housing 4, and the urea injector 3 are located in the upper chamber 4d, and the selective catalyst 2 and the discharge port 4b of the housing 4 are located in the lower chamber 4e. The wall-flow type particle catcher 1 and the selective catalyst 2 are arranged in parallel up and down, so that the length of an exhaust pipe can be saved. The tail gas discharged from the gas outlet of the wall-flow particle catcher 1 enters the shell 4 through the gas inlet 4a and is mixed with the urea solution sprayed by the urea sprayer 3 in the shell 4 to form a gas-liquid mixture. And then the gas-liquid mixture enters the selective catalyst 2 through the discharge port 4b, and nitrogen oxides in the gas-liquid mixture and ammonia formed by urea decomposition are subjected to chemical reaction in the selective catalyst 2 to be converted into harmless nitrogen, so that the content of nitrogen oxides in tail gas is reduced.

Further, the rotary heating member 5 can rotate, so that the air flow direction in the upper chamber 4d in the shell 4 can be changed, the tail gas can be mixed with the urea solution, the urea solution can be effectively prevented from adhering to the inner wall of the shell 4, and the urea crystallization precipitated on the inner wall is reduced. After mixing and pooling the exhaust gas and urea solution in the upper chamber 4d, it flows down in the vertical direction to the lower chamber 4e and enters the selective catalyst 2 from the outlet 4 b. The rotary heating element 5 can also disperse small crystal particles in the urea solution, preventing agglomeration of the small crystal particles into large crystal particles. Therefore, the problem that urea crystals block the selective catalyst 2 can be solved, the content of urea and ammonia in a gas-liquid mixture can be ensured, and the treatment effect of nitrogen oxides is improved.

Furthermore, when the temperature of the exhaust gas is higher than 150 ℃ and lower than 300 ℃, the urea solution undergoes a side reaction to form urea crystals, and at this time, the heating function of the rotary heating member 5 is started to heat the urea solution from the liquid inlet 4c and the exhaust gas from the air inlet 4a, so that the urea crystallization byproducts generated in the system are decomposed, and the risk brought by urea crystallization is effectively reduced.

In the exhaust gas treatment device 100, the rotary heating member 5 is disposed in the housing 4, and the rotary heating member 5 can change the movement direction of the fluid by rotating, so as to effectively prevent the urea solution sprayed from the urea sprayer 3 from adhering to the inner wall of the housing 4, thereby reducing the formation of urea crystals. In addition, the rotary heating member 5 can fully mix the tail gas discharged from the wall-flow particle catcher 1 with the urea solution, thereby improving the effect of tail gas treatment. Further, the rotary heating member 5 can heat the urea solution and the off-gas to decompose crystal byproducts such as biuret, cyanuric acid, and melamine generated from urea, thereby further reducing urea crystallization in the off-gas treatment apparatus 100.

In some of these embodiments, the rotary heating member 5 is rotatable about a vertical rotation axis, and the liquid inlet 4c is located above the rotary heating member 5.

The rotary heating member 5 can rotate around the rotation axis, so that a vortex-like air flow can be formed, the energy is saved, the environment is protected, the surrounding flow is realized, and the formation of crystallization on the inner wall can be reduced. Optionally, the liquid inlet 4c is located above the rotating shaft, so that the urea solution flowing out from the liquid inlet 4c can be fully mixed with the tail gas, the adhesion of liquid microparticles to the inner wall of the shell 4 can be reduced as much as possible, and the formation of crystals on the inner wall can be reduced.

In some of these embodiments, the inlet port 4a and the outlet port 4b are located on the same side wall of the housing 4. As can be appreciated, referring to fig. 1, the air inlet 4a and the air outlet 4b are located on the same side wall of the housing 4, and the air inlet 4a and the air outlet 4b are arranged in parallel from top to bottom, so as to match with the wall-flow type particle catcher 1 and the selective catalyst 2 which are arranged in parallel from top to bottom, so that the exhaust gas forms an air flow from the air inlet 4a to the air outlet 4b through the rotary heating member 5, which is beneficial for mixing the exhaust gas and the urea solution.

In some of these embodiments, the exhaust treatment device 100 further includes a thermal insulation member 6, where the thermal insulation member 6 is disposed on a surface of the housing 4 opposite the air inlet 4a and the outlet 4 b. Understandably, the heat insulating member 6 is provided on one side of the housing 4 opposite to the side wall where the air inlet 4a and the outlet 4b are located, and is provided on the outside of the housing. That is, the heat insulating member 6 is provided at the outermost end of the housing 4. The heat preservation piece 6 can be in a sealing connection with the shell 4 in a stainless steel shell brazing mode, and heat preservation cotton is filled in the stainless steel shell, so that the temperature loss can be effectively slowed down.

In some of these embodiments, the rotary heating member 5 will be provided in the middle of the housing 4. Understandably, in the present embodiment, the rotary heating member 5 divides the housing 4 into an upper chamber 4d and a lower chamber 4e which are close in size.

In some of these embodiments, the rotary heating member 5 is a fan for conveying the air flow from the liquid inlet 4c and the air inlet 4a to the discharge port 4b.

In some embodiments, the fan has a blade 5a and a heating element 5b, and the heating element 5b is disposed on an upper surface of the blade 5 a. Referring to fig. 1, the fan has a plurality of blades 5a, and a heating member 5b is disposed on an upper surface of each fan to heat urea solution flowing from the inlet 4c and exhaust gas discharged from the inlet 4 a.

In a specific embodiment, the heating element 5b is a resistance wire.

In some of these embodiments, the exhaust treatment device 100 further comprises an electronic control unit 7 for controlling the temperature of the rotary heating member 5. The electronic control unit 7 (ECU) mainly collects and processes the data fed back by each sensor, and sends out corresponding instructions according to the data. In this embodiment, the electronic control unit 7 can adjust and control the rotary heating member 5 to the desired temperature in order to minimize the urea crystallization content.

In some of these embodiments, the exhaust gas treatment device 100 further includes a first temperature sensor 8, a second temperature sensor 9, and a third temperature sensor 10, where the first temperature sensor 8 is connected to the air inlet 4a, the second temperature sensor 9 is connected to the outlet 4b, and the third temperature sensor 10 is connected to the rotary heating element 5.

It is understood that the first temperature sensor 8 is used to detect the temperature T1 of the exhaust gas at the inlet 4a, the second temperature sensor 9 is used to detect the temperature T2 of the mixture of exhaust gas and urea solution at the outlet 4b, and the third temperature sensor 10 is used to rotate the temperature T3 of the heating element 5.

In some of these embodiments, the exhaust gas treatment device 100 further includes a nitrogen-oxygen sensor 11 connected to the air intake port 4 a.

Understandably, the nitrogen-oxygen sensor 11 is used to detect the nitrogen oxide content in the exhaust gas at the gas port.

Further, referring to fig. 1, the first temperature sensor 8, the second temperature sensor 9, the third temperature sensor 10 and the nitrogen-oxygen sensor 11 are all connected to the electronic control unit 7, and are used for feeding back the detected content data of T1, T2, T3 and nitrogen oxides to the electronic control unit 7, and the electronic control unit 7 controls the temperatures of the air inlet 4a, the discharge outlet 4b and the rotary heating member 5 and the flow rate of the air inlet 4a according to a preset program according to the fed-back temperature data.

It is understood that when T1 is greater than the preset first temperature threshold and the content of nitrogen oxides in the exhaust gas is greater than the preset content threshold, the electronic control unit 7 controls the urea injector 3 to open and inject urea solution into the housing 4, and simultaneously controls the temperature of the rotary heating member 5 to ensure that the temperature of the reaction can be maintained in the housing 4. To prevent the false heating phenomenon of the rotary heating element 5, the electronic control unit 7 judges whether to start the heating function of the rotary heating element 5 according to the injection condition of the urea injector 3; whether heating is performed or not may be determined based on the nitrogen oxide content in the exhaust gas measured by the nitrogen oxide sensor 11, and when determining based on the nitrogen oxide content, a threshold value of nitrogen oxide may be input into the electronic control unit 7 in advance; the determination may also be made based on T1 detected by the first temperature sensor 8. In the embodiment, whether the heating function of the rotary heating element 5 is started or not is judged through the spraying condition of the urea solution, the nitrogen oxide content and the T1, so that the heating accuracy and timeliness can be ensured to the greatest extent, and the formation of urea crystals is reduced. Further, the third temperature sensor 10 can accurately reflect the temperature of the rotary heating member 5 to better control the temperature of the heating member 5b, thereby more accurately controlling the urea solution and exhaust gas temperature in the housing 4.

In some of these embodiments, the urea injector 3 comprises a valve 3a. Whether the urea injector 3 injects urea solution or not can be controlled by the valve 3a. Optionally, the valve 3a is a butterfly valve.

In some of these embodiments, the exhaust gas treatment device 100 further includes an oxidation catalyst 12 and an ammonia oxidation catalyst 13. The gas outlet of the oxidation catalyst 12 (DOC) is connected to the gas inlet 4a of the wall-flow particle catcher 1, and the feed inlet of the ammonia oxidation catalyst 13 (ASC) is connected to the discharge outlet 4b of the selective catalyst 2.

In the embodiment shown in fig. 1, the exhaust gas treatment device 100 is generally U-shaped, the wall-flow particulate trap 1 and the selective catalyst 2 are respectively located at openings at two ends of the U-shape, and the housing 4 is disposed between the wall-flow particulate trap 1 and the selective catalyst 2. The rotary heating member 5 is provided in the middle of the housing 4, and divides the housing 4 into an upper chamber 4d and a lower chamber 4e. The air inlet 4a and the discharge outlet 4b of the housing 4 are provided on the right side wall, and the air inlet 4a and the liquid inlet 4c are located in the upper chamber 4d, and the discharge outlet 4b is located in the lower chamber 4e. The wall-flow particle catcher 1 and the selective catalyst 2 are positioned on the right side of the shell 4, and the discharge port 4b and the liquid inlet 4c are respectively connected with the wall-flow particle catcher 1 and the selective catalyst 2. The liquid inlet 4c is positioned at the top of the shell 4 and above the rotary heating member 5, and the urea injector 3 is connected with the liquid inlet 4 c. The rotary heating element 5 is a fan and comprises a fan blade 5a and a heating element 5b, wherein the heating element 5b is positioned on the upper surface of the fan blade 5 a. The left side of the housing 4 is further provided with a thermal insulation member 6, and the exhaust gas treatment device 100 further comprises an electronic control unit 7, a first temperature sensor 8, a second temperature sensor 9, a third temperature sensor 10, a nitrogen-oxygen sensor 11, an oxidizing catalyst 12 and an ammonia oxidation catalyst 13.

The treatment method for reducing urea crystallization by adopting the tail gas aftertreatment device comprises the following steps.

Step S1: the engine starts to operate, tail gas enters the shell 4 through the exhaust pipe, passes through the oxidation catalyst 12 and the wall-flow type particle catcher 1, and the first temperature sensor 8 collects the temperature T1 of the air outlet of the oxidation catalyst 12. If T1 is smaller than a first preset threshold T1, the electronic control unit 7 controls the urea injector 3 not to spray urea solution; if T1 is greater than a first preset threshold T1, the electronic control unit 7 sends out an instruction to start urea solution injection, and determines the injection quantity of the urea solution according to the content of nitrogen oxides in the exhaust gas measured by the nitrogen-oxygen sensor 11. Optionally, the first preset threshold t1 is 180 ℃ to 230 ℃.

It is understood that when T1 is lower than the first preset threshold T1, the urea solution will adhere directly to the inner wall of the housing 4 due to too low temperature, and urea crystals will form, and the temperature of the exhaust gas needs to be raised to meet the environmental temperature requirement in the housing 4. When T1 is higher than the first preset threshold T1, the electronic control unit 7 opens the urea injector 3 to mix the nitrogen oxides in the exhaust gas with the urea solution.

Step S2: the second temperature sensor 9 detects the temperature T2 of the urea solution and exhaust gas mixture at the outlet 4b and transmits T2 data to the electronic control unit 7. The electronic control unit 7 determines whether to turn on the heating function of the rotary heating member 5 according to T1 and T2.

It will be appreciated that since the urea solution is mixed with the exhaust gas and the urea injector 3 continuously injects the urea solution into the housing 4, the temperature in the housing 4 may be reduced, and thus the temperature T2 of the discharge port 4b needs to be collected. When T2 is smaller than the second preset threshold T2, the electronic control unit 7 turns on the heating function of the rotary heating element 5 to ensure that the required ambient temperature exists in the casing 4, and the first preset threshold T1 is smaller than the second preset threshold T2. When T2 is greater than a first preset threshold T1 and less than a second preset threshold T2, the rotary heating element 5 starts a heating function, so that the temperature in the shell 4 is increased to 300-400 ℃ to decompose the formed urea crystals. When T2 is greater than the second preset threshold T2, the electronic control unit 7 issues an instruction to stop heating of the rotary heating element 5, and since urea crystals generated under the temperature condition are few and a small amount of urea crystals start to decompose, the purpose of reducing urea crystals can be achieved without additional heating, and the energy consumption can be reduced by stopping heating at this time.

In one embodiment, the rotary heating element 5 is a fan, the fan blade 5a is provided with a heating element 5b, and the heating element 5b is a resistance wire. At this time, the resistance wire can be heated quickly and reach the target temperature, whereby the use of the throttle valve and the exhaust temperature management valve can be reduced. Therefore, the resistance wire can be directly electrified when the engine is started in a cold state, so that the resistance wire can heat tail gas, the aim of rapid heating is achieved, the generation of urea crystallization is reduced, and the oil-saving effect can be achieved.

Step S3: the mixture of exhaust gas and urea solution is mixed under the action of the rotary heating member 5.

The exhaust gas and the urea solution can be further mixed by the rotation of the heating member 5 and flow into the lower chamber 4e of the housing 4 in the vertical direction.

Step S4: the mixture of tail gas and urea solution enters the selective catalyst 2 through a discharge port 4 b.

The application also provides an automobile comprising the tail gas treatment device. The automobile adopts a specific tail gas treatment device, so that the content of nitrogen oxides in the automobile tail gas can be effectively reduced.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the patent. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims (11)

1. An exhaust gas treatment device, characterized in that the exhaust gas treatment device comprises:

Wall-flow particle catcher;

A selective catalyst;

a urea injector;

The shell is provided with an air inlet, a discharge hole and a liquid inlet, the air inlet is connected with an air outlet of the wall-flow particle catcher, the discharge hole is connected with a feed inlet of the selective catalyst, and the liquid inlet is connected with a liquid outlet of the urea injector; and

The rotary heating piece is arranged in the shell and can rotate, and is used for heating urea solution from the liquid inlet and tail gas from the air inlet.

2. The exhaust gas treatment device of claim 1, wherein the rotary heating member is rotatable about a vertical axis of rotation, and the liquid inlet is located above the rotary heating member.

3. The exhaust gas treatment device of claim 2, wherein the gas inlet and the discharge port are located on the same side wall of the housing.

4. The exhaust gas treatment device of claim 3, further comprising a thermal insulation member disposed on a surface of the housing opposite the air inlet and the discharge outlet.

5. The exhaust gas treatment device according to any one of claims 1 to 4, wherein the rotary heating member is disposed in the housing and divides the housing into an upper chamber and a lower chamber, the air inlet and the liquid inlet are located in the upper chamber, and the discharge outlet is located in the lower chamber.

6. The exhaust gas treatment device according to any one of claims 1 to 4, wherein the rotary heating member is a fan for conveying the air flow from the liquid inlet and the air inlet to the discharge port.

7. The exhaust gas treatment device of claim 6, wherein the fan has a blade and a heating member disposed on an upper surface of the blade.

8. The exhaust gas treatment device according to any one of claims 1 to 4, further comprising an electronic control unit for controlling the temperature of the rotary heating element.

9. The exhaust gas treatment device according to any one of claims 1 to 4, further comprising a first temperature sensor, a second temperature sensor and a third temperature sensor, wherein the first temperature sensor is connected with the air inlet, the second temperature sensor is connected with the discharge port, and the third temperature sensor is connected with the rotary heating member.

10. The exhaust gas treatment device according to any one of claims 1 to 4, further comprising a nitrogen-oxygen sensor connected to the air inlet.

11. An automobile comprising the exhaust gas treatment device according to any one of claims 1 to 10.