CN216171905U - Pneumatic stirring device for diesel oil tail gas treatment liquid - Google Patents
Pneumatic stirring device for diesel oil tail gas treatment liquid Download PDFInfo
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- CN216171905U CN216171905U CN202121564509.0U CN202121564509U CN216171905U CN 216171905 U CN216171905 U CN 216171905U CN 202121564509 U CN202121564509 U CN 202121564509U CN 216171905 U CN216171905 U CN 216171905U
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Abstract
The utility model discloses a pneumatic stirring device for diesel oil tail gas treatment liquid, which comprises: the device comprises a blending pool, wherein a first feeding port for feeding solid urea is arranged above the blending pool, the blending pool is connected with a first liquid storage tank for storing pure water through a first pipeline, an air inlet valve is arranged at the bottom of the blending pool and connected with an air compressor through a second pipeline, and the air compressor is used for compressing first gas and conveying the first gas into the blending pool through the air inlet valve so as to stir and heat liquid in the blending pool. The utility model can combine stirring and heating in the preparation process of the diesel tail gas treatment liquid to reduce energy waste.
Description
Technical Field
The utility model relates to the field of diesel exhaust treating fluid manufacturing, in particular to a pneumatic stirring device for diesel exhaust treating fluid.
Background
The diesel exhaust gas treatment liquid is commonly called automobile urea and is a consumable product of the exhaust gas treatment SCR (Selective Catalytic Reduction) Technology of the diesel engine. The principle is that the automobile urea and harmful nitrogen oxides react to generate pollution-free nitrogen and water vapor to be discharged.
The diesel exhaust gas treatment fluid is generally prepared by mixing pure water and urea according to a preset proportion. During the preparation process, the pure water and the urea need to be stirred so as to enable the reaction between the pure water and the urea to be carried out more quickly. The reaction between pure water and urea absorbs heat, and the reaction speed of the pure water and the urea can be further accelerated by heating while stirring. In the prior art, a stirrer and a heater are generally adopted to respectively stir and heat the diesel exhaust treating fluid, and the two devices are adopted to waste energy and the urea is easy to remain on blades of the stirrer.
SUMMERY OF THE UTILITY MODEL
In view of the defects of the prior art, the technical problem to be solved by the utility model is to provide a pneumatic stirring device for a diesel exhaust treating fluid, aiming at fusing stirring and heating in the preparation process of the diesel exhaust treating fluid to reduce energy waste.
In order to achieve the above object, the present invention provides a pneumatic stirring device for a diesel exhaust gas treatment fluid, comprising: the device comprises a blending tank, wherein a first feeding port for feeding solid urea is arranged above the blending tank, the blending tank is connected with a first liquid storage tank for storing pure water through a first pipeline, an air inlet valve is arranged at the bottom of the blending tank, the air inlet valve is connected with an air compressor through a second pipeline, and the air compressor is used for compressing first gas and conveying the first gas into the blending tank through the air inlet valve so as to stir and heat liquid in the blending tank.
Optionally, the gas inlet valve allows the first gas to enter the blending tank through the second pipeline, and does not allow the liquid and/or gas in the blending tank to enter the second pipeline.
Optionally, the second conduit is arranged proximate to a bottom and/or a side wall of the blending tank such that the liquid in the blending tank absorbs heat from the second conduit.
Optionally, the first liquid storage tank is arranged at a position higher than the maximum water level line of the blending tank, the outlet of the first pipeline is arranged at a position higher than the maximum water level line of the blending tank, and the outlet of the first pipeline is provided with a first valve for preventing backflow.
Optionally, the pneumatic stirring device of diesel oil tail gas treatment liquid still includes: a solid urea hoist;
and the solid urea lifting machine is used for lifting the whole package of solid urea to the first feeding port and feeding the solid urea into the blending tank through the first feeding port along the packaging opening.
Optionally, the pneumatic stirring device of diesel oil tail gas treatment liquid still includes:
and a second feeding port is arranged above the blending tank and used for feeding a catalyst required by preparation of the diesel tail gas treatment liquid.
Optionally, the temperature of the first gas after being compressed by the air compressor is 50-70 ℃, and the first gas is used for supplying heat to an endothermic reaction for preparing the diesel oil tail gas treatment liquid.
Optionally, the first gas is air.
The utility model has the beneficial effects that: 1. the bottom of the blending pool is provided with an air inlet valve, the air inlet valve is connected with an air compressor through a second pipeline, and the air compressor is used for compressing first gas and conveying the first gas into the blending pool through the air inlet valve so as to stir and heat liquid in the blending pool. According to the utility model, the first gas is compressed by the air compressor to heat the first gas, and then the heated first gas is introduced into the blending pool, and the first gas is used for heating while flowing and stirring the liquid in the blending pool, so that the blending and heating are realized, the energy waste is reduced, and meanwhile, the problem that urea remains on the blades of the stirrer can be avoided because a stirrer is not used. 2. The gas inlet valve of the present invention allows the first gas to enter the blending tank through the second pipe, and does not allow the liquid and/or gas in the blending tank to enter the second pipe. The liquid in the blending pool is prevented from reversely flowing to block the second pipeline. 3. The second conduit of the present invention is disposed proximate the bottom and/or side walls of the blending tank such that the liquid in the blending tank absorbs heat from the second conduit. Because the second conduit has the first gas therein at an elevated temperature, the second conduit is at a higher temperature than the blending tank, and therefore the second conduit can transfer heat to the blending tank. The second pipeline is close to the blending tank for heating, so that the waste of energy can be reduced. In conclusion, when the diesel tail gas treatment solution is prepared, the first gas subjected to compression and temperature rise is introduced to effectively mix and heat, so that energy waste is reduced, and the problem that urea remains on a stirrer is avoided.
Drawings
Fig. 1 is a schematic structural diagram of a pneumatic stirring device for diesel exhaust fluid according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
Through years of work experience and research of the applicant, the following results are found: the existing diesel exhaust treating fluid uses different devices for heating and stirring respectively in the preparation process, and two power sources are needed, so that the energy consumption is increased, a blade type stirrer is usually used for stirring, and urea is easy to remain on blades, so that the cleaning trouble is caused.
Therefore, an embodiment of the present invention provides a pneumatic stirring apparatus for diesel exhaust treatment fluid, as shown in fig. 1, including: the device comprises a blending tank 1, wherein a first feeding port 2 for feeding solid urea is arranged above the blending tank 1, the blending tank 1 is connected with a first liquid storage tank 4 for storing pure water through a first pipeline 3, an air inlet valve 5 is arranged at the bottom of the blending tank 1, the air inlet valve 5 is connected with an air compressor 7 through a second pipeline 6, and the air compressor 7 is used for compressing first gas and conveying the first gas into the blending tank 1 through the air inlet valve 5 so as to stir and heat liquid in the blending tank 1.
The preparation tank 1 is a vessel for reacting solid urea with pure water. The blending tank 1 may be a reaction kettle or a reaction tank, and may be in the shape of a cylinder or a cube.
Optionally, the gas inlet valve 5 allows the first gas to enter the blending tank 1 through the second pipe 6, and does not allow the liquid and/or gas in the blending tank 1 to enter the second pipe 6.
It should be noted that the air intake valve 5 needs to maintain the unidirectional property when the blending tank 1 is used for preparing the diesel tail gas treatment liquid, that is, only the first gas is allowed to enter the blending tank 1, and the liquid or gas in the blending tank 1 is not allowed to enter the second pipeline 6. Thus, the reverse flow can be effectively prevented, and the second pipeline 6 can not be blocked.
Optionally, the second conduit 6 is arranged proximate to the bottom and/or side walls of the blending tank 1 such that the liquid in the blending tank 1 absorbs heat from the second conduit 6.
It should be noted that the first gas passing through the second duct 6 is compressed by the air compressor 7 to be heated, and thus the duct wall of the second duct 6 is heated. In order to avoid directly radiating the heat of the wall of the second pipeline 6 into the air, most of the second pipeline 6 is close to the blending tank 1, and the heat of the wall of the second pipeline 6 is transferred to the blending tank 1 to provide the heat required by the preparation reaction of the diesel tail gas treatment liquid.
Optionally, the first liquid storage tank 4 is arranged at a position higher than the maximum water level of the blending tank 1, the outlet of the first pipeline 3 is arranged at a position higher than the maximum water level of the blending tank 1, and the outlet of the first pipeline 3 is provided with a first valve for preventing backflow.
It should be noted that the first liquid storage tank 4 is arranged at a position higher than the maximum water level line of the blending tank 1, so that the first liquid storage tank 4 can discharge pure water into the blending tank 1 close to the atmospheric pressure without being pressurized by the outside, and energy for generating pressure is saved. The outlet of the first pipe 3 is arranged at a position higher than the maximum water level of the blending tank 1, and the outlet of the first pipe 3 is provided with a first valve for preventing backflow, so that liquid in the blending tank 1 is prevented from flowing backward into the first pipe 3, and pure water is polluted.
In one embodiment, the first storage tank 4 may be positioned at a location not higher than the maximum water level of the blending tank 1. At this time, it is desirable that the embodiment of the present invention further includes a pressurizing machine for pressurizing the pure water in the first storage tank 4 to discharge the pure water into the blending tank 1.
Optionally, the pneumatic agitating unit of diesel oil tail gas treatment liquid still includes: a solid urea hoist;
and the solid urea lifting machine is used for lifting the whole package of solid urea to the first feeding port 2 and feeding the solid urea into the blending tank 1 through the first feeding port 2 along the packaging opening.
The whole package of solid urea is put in by the solid urea hoister at one time, so that the preparation production efficiency can be effectively improved.
Optionally, the pneumatic agitating unit of diesel oil tail gas treatment liquid still includes:
a second feeding port is arranged above the blending tank 1 and used for feeding a catalyst required by the preparation of the diesel tail gas treatment liquid. The preparation of the general diesel tail gas treatment liquid needs a catalyst for improving the reaction speed.
In the specific implementation process, the second feeding port and the first feeding port 2 can be the same feeding port, so that the opening can be saved, and the structure is simple. The second feeding port and the first feeding port 2 are not the same, so that the feeding ports are prevented from being polluted by different raw materials.
Optionally, the temperature of the first gas after being compressed by the air compressor 7 is 50-70 ℃, and the first gas is used for supplying heat to the endothermic reaction prepared by the diesel exhaust treating fluid.
The temperature of 50-70 ℃ is a better heat supply temperature for the preparation reaction of the diesel tail gas treatment liquid, so that the reaction speed can be ensured, and simultaneously, the reduction of pure water evaporation and the unbalance of the raw material proportion caused by excessive heating can be avoided. The air compressor 7 may vary the temperature of the compressed gas by varying the degree of compression of the gas. Generally, the smaller the volume of gas compressed, the higher the temperature.
Optionally, the first gas is air. The air is easy to obtain, the cost is low, and the gas which does not influence the preparation of the diesel tail gas treating fluid can be used.
The working principle of the embodiment of the utility model is as follows:
solid urea is put in through a first feeding port, pure water in a first liquid storage tank 4 is introduced into a blending tank 1, the mass ratio of the solid urea to the pure water is generally 3.25:6.75, an air compression molding machine is started to compress first gas, the compressed and heated first gas is discharged into the blending tank 1, and stirring and heating are simultaneously performed to accelerate the preparation reaction of the diesel tail gas treatment liquid.
An air inlet valve 5 is arranged at the bottom of the blending tank 1 of the embodiment of the utility model, the air inlet valve 5 is connected with an air compressor 7 through a second pipeline 6, and the air compressor 7 is used for compressing a first gas and transmitting the first gas into the blending tank 1 through the air inlet valve 5 so as to stir and heat the liquid in the blending tank 1. According to the embodiment of the utility model, the first gas is compressed by the air compressor 7 to heat the first gas, then the heated first gas is introduced into the blending tank 1, and the first gas is used for stirring and heating the liquid in the blending tank 1, so that the mixing and heating are realized, the energy waste is reduced, and meanwhile, the problem that urea remains on the blades of the stirrer can be avoided because a stirrer is not used. The gas inlet valve 5 of the embodiment of the present invention allows the first gas to enter the blending tank 1 through the second pipe 6, and does not allow the liquid and/or gas in the blending tank 1 to enter the second pipe 6. The liquid in the blending tank 1 is prevented from reversely blocking the second pipeline 6. The second conduit 6 of the embodiment of the present invention is arranged close to the bottom and/or the side wall of the blending tank 1 so that the liquid in the blending tank 1 absorbs the heat of the second conduit 6. Since the second pipe 6 contains the first gas having a temperature increased, the temperature of the second pipe 6 is higher than that of the blending tank 1, and therefore the second pipe 6 can transfer heat to the blending tank 1. The second pipeline 6 is close to the blending tank 1 for heating, so that the waste of energy can be reduced. In summary, in the embodiment of the utility model, when the diesel exhaust treatment fluid is prepared, the first gas after being compressed and heated is introduced to effectively mix and heat, so that the energy waste is reduced, and the problem that urea remains on the stirrer is avoided.
The foregoing detailed description of the preferred embodiments of the utility model has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (8)
1. A pneumatic stirring device for diesel exhaust treatment fluid is characterized by comprising: the device comprises a blending tank, wherein a first feeding port for feeding solid urea is arranged above the blending tank, the blending tank is connected with a first liquid storage tank for storing pure water through a first pipeline, an air inlet valve is arranged at the bottom of the blending tank, the air inlet valve is connected with an air compressor through a second pipeline, and the air compressor is used for compressing first gas and conveying the first gas into the blending tank through the air inlet valve so as to stir and heat liquid in the blending tank.
2. The pneumatic stirring device for diesel exhaust fluid of claim 1, wherein the air inlet valve allows the first gas to enter the blending tank through the second pipeline, and does not allow the liquid and/or gas in the blending tank to enter the second pipeline.
3. The pneumatic diesel tail gas treatment fluid stirring device of claim 1, wherein the second conduit is arranged proximate to the bottom and/or the side wall of the blending tank, such that the liquid in the blending tank absorbs heat from the second conduit.
4. The pneumatic stirring device for diesel exhaust fluid according to claim 1, wherein the first fluid storage tank is disposed at a position higher than a maximum water level line of the blending tank, the outlet of the first pipe is disposed at a position higher than the maximum water level line of the blending tank, and a first valve for preventing reverse flow is disposed at the outlet of the first pipe.
5. The pneumatic stirring device for diesel exhaust fluid according to claim 1, further comprising: a solid urea hoist;
and the solid urea lifting machine is used for lifting the whole package of solid urea to the first feeding port and feeding the solid urea into the blending tank through the first feeding port along the packaging opening.
6. The pneumatic stirring device for diesel exhaust fluid according to claim 1, further comprising:
and a second feeding port is arranged above the blending tank and used for feeding a catalyst required by preparation of the diesel tail gas treatment liquid.
7. The pneumatic stirring device for the diesel exhaust fluid according to claim 1, wherein the temperature of the first gas after being compressed by the air compressor is 50-70 ℃ for supplying heat to the endothermic reaction for preparing the diesel exhaust fluid.
8. The pneumatic stirring device for diesel exhaust fluid of claim 1, wherein the first gas is air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121564509.0U CN216171905U (en) | 2021-07-09 | 2021-07-09 | Pneumatic stirring device for diesel oil tail gas treatment liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121564509.0U CN216171905U (en) | 2021-07-09 | 2021-07-09 | Pneumatic stirring device for diesel oil tail gas treatment liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216171905U true CN216171905U (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121564509.0U Active CN216171905U (en) | 2021-07-09 | 2021-07-09 | Pneumatic stirring device for diesel oil tail gas treatment liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216171905U (en) |
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2021
- 2021-07-09 CN CN202121564509.0U patent/CN216171905U/en active Active
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