CN205370705U - Urea heating mixing arrangement - Google Patents
Urea heating mixing arrangement Download PDFInfo
- Publication number
- CN205370705U CN205370705U CN201620136655.6U CN201620136655U CN205370705U CN 205370705 U CN205370705 U CN 205370705U CN 201620136655 U CN201620136655 U CN 201620136655U CN 205370705 U CN205370705 U CN 205370705U
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- China
- Prior art keywords
- exhaustor
- section
- blast pipe
- urea
- blender
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Abstract
The utility model relates to an urea heating mixing arrangement, it includes urea nozzle, SCR reactor, blender, its characteristics are: still include the blast pipe heating section, blast pipe heating section both ends respectively with blast pipe linkage segment and blast pipe mixing section sealing connection, microwave emitter arranges in the blast pipe heating section and links firmly, the metal perforated plate cup joints on the blast pipe heating section and links firmly, temperature sensor arranges in between blast pipe heating section and the blender and links firmly, measurement and control platform signal both ends respectively with temperature sensor and microwave emitter signal connection. During operation, the urea aqueous solution pass through during the urea nozzle gets into the blast pipe linkage segment, and along with in the exhaust body gets into the blast pipe heating section together, microwave emitter decomposes its heating back in the blast pipe heating section gets into the blender, decompose ammonia that and exhaust body intensive mixing entering SCR reactor totally, carries out SCR catalytic reaction, and messenger nitrogen oxide can effectually be returned to the original condition or shape by the ammonia, the emission of pollution abatement thing.
Description
Technical field
This utility model relates to technical field of internal combustion engines, is a kind of Urea mixing arrangement for internal combustion engine.
Background technology
Along with developing rapidly of modern science and technology and auto industry, yield and the recoverable amount of automobile are continuously increased, and automobile has become as the important vehicles and the means of transport that the mankind depend on for existence.But, what all come with it is its serious exhaust emissions, to the threat that the health of the living environment of the mankind and mankind itself is brought.
For this, obtain popularization and application with SCR (SCR) technology that aqueous solution of urea is reducing agent, particularly in China that oil product sulfur content is higher, SCR (SCR) technology is widely applied especially.The reaction mechanism of SCR technology is: aqueous solution of urea is according to the NO-in institute's aerofluxus bodyXContent is injected in exhaustor, at high temperature resolves into ammonia, and ammonia molecule is attached in the active sites on catalytic carrier surface of SCR reactor, with the NO-in institute aerofluxus bodyXReaction generates nitrogen and water.
If in exhaustor, temperature is sufficiently high and exhaustor long enough, aqueous solution of urea can not only decomposite ammonia completely in exhaustor, and the ammonia decomposited completely in exhaustor can be sufficiently mixed with institute's aerofluxus body and react.But during real work, if electromotor operates at running on the lower load, institute's aerofluxus temperature is relatively low, and carbamide decomposes not exclusively, can cause the generation of side reaction, affect reaction efficiency, even blocks exhaustor, reduces engine output.Further, since the installing space of car body is limited, it is impossible to install sufficiently long pipeline, or low in north outdoor temperature, causing that carbamide own temperature is low, these all can cause the problems referred to above.So the problem how solving carbamide low temperature depositing at present is the most important thing of SCR research field.
Summary of the invention
The technical problems to be solved in the utility model is: the shortcoming overcoming prior art, a kind of Urea mixing arrangement for internal combustion engine is provided, can when internal combustion engine underrun or aqueous solution of urea own temperature be relatively low, improve the work efficiency of SCR reactor, avoid being formed urea crystals at SCR reactor inlet place, reduce exhaust back pressure, increase engine output, reduce the discharge capacity of nitrogen oxides.
nullThis utility model solves the scheme of technical problem: a kind of Urea mixing arrangement，It includes urea nozzle、Exhaustor linkage section、SCR reactor、Exhaustor mixing section、Blender，Described urea nozzle one end and urea pump are tightly connected、The other end stretches in exhaustor linkage section，SCR reactor is placed in the port of export of exhaustor mixing section and is tightly connected，Before blender is placed in SCR reactor、On exhaustor mixing section and be tightly connected，It is characterized in that: also include exhaustor bringing-up section、Microwave emitter、Perforated metal panel、Temperature sensor、Monitoring and control unit，Described exhaustor bringing-up section one end and exhaustor linkage section are tightly connected、The other end and exhaustor mixing section are tightly connected，At least one microwave emitter described is placed in exhaustor bringing-up section and is connected，The socket external application of described perforated metal panel and is connected in exhaustor bringing-up section，Described temperature sensor is placed between exhaustor bringing-up section and blender、On exhaustor mixing section and be connected，Monitoring and control unit signal input part is connected with temperature sensor signal、Signal output part is connected with microwave emitter signal.
Described exhaustor bringing-up section diameter is more than exhaustor linkage section diameter and exhaustor mixing section diameter.
Work process of the present utility model is: during its work, the injection direction of urea nozzle is consistent with arranged gas flow direction, aqueous solution of urea enters in exhaustor linkage section by urea nozzle, along with institute's aerofluxus body enters stop of short duration in exhaustor bringing-up section together, microwave emitter is launched microwave and is heated to after higher than 250 DEG C, flow out from exhaustor bringing-up section, enter in the blender of exhaustor mixing section and decompose, the ammonia decomposited completely and institute's aerofluxus body are sufficiently mixed entrance SCR reactor, carry out SCR catalytic reaction, nitrogen oxides is made effectively to be reduced by ammonia, reduce pollutant emission.Have simple in construction, with low cost, reaction is fully effective, reduces the advantage that pollutant emission is beneficial to environmental protection.
The beneficial effects of the utility model are: it compared with prior art has the advantage that
1. Urea mixing arrangement of the present utility model, its exhaustor bringing-up section adopts microwave heating, it is possible to realize the raising of aqueous solution of urea temperature evenly, rapidly；
2. Urea mixing arrangement of the present utility model, its exhaustor bringing-up section diameter is more than exhaustor linkage section diameter and exhaustor mixing section diameter, be conducive to the stable of gas pressure and the buffering of aqueous solution of urea flowing, can stop at exhaustor bringing-up section internal transitory after aqueous solution of urea can either be made to enter exhaustor and be reached suitable temperature by microwave heating, to ensure to decomposite ammonia completely in aqueous solution of urea entrance blender, the ammonia that carbamide decomposes out can be sufficiently mixed with electromotor institute aerofluxus body, it is prevented from again the exhaust back pressure after aqueous solution of urea flows through blender to raise, reduce drag losses herein, ensure being sufficiently mixed of ammonia and institute's aerofluxus body；Below in conjunction with accompanying drawing and
3. Urea mixing arrangement of the present utility model, its socket external application perforated metal panel in exhaustor bringing-up section can reduce the microwave entered environment within exhaustor bringing-up section, and environment or human body are worked the mischief；
4. Urea mixing arrangement of the present utility model, its blender is placed in the structure of exhaustor mixing section, it is possible to prevent the microwave loss to the blender life-span, extends the stability that blender uses the time overall with device；
5. Urea mixing arrangement of the present utility model, the temperature of the aqueous solution of urea of heating can be real-time transmitted to monitoring and control unit by its temperature sensor, and by the transmitting power of monitoring and control unit control microwave emitter, meets the heating needs of aqueous solution of urea.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of Urea mixing arrangement of this utility model.
In figure: 1 monitoring and control unit；2 perforated metal panels；3 blenders；4SCR reactor；5 microwave emitters；6 urea nozzle.
Detailed description of the invention
Below in conjunction with drawings and Examples, this utility model is further illustrated.
nullWith reference to Fig. 1，The present embodiment one Urea mixing arrangement，It includes urea nozzle 6、Exhaustor linkage section、SCR reactor 4、Exhaustor mixing section、Blender 3，Described urea nozzle 6 one end and urea pump are tightly connected、The other end stretches in exhaustor linkage section，The injection direction of urea nozzle 6 is consistent with arranged gas flow direction，SCR reactor 4 is placed in the port of export of exhaustor mixing section and is connected by flange seal，Before blender 3 is placed in SCR reactor 4、Connect on exhaustor mixing section and by flange seal，Also include exhaustor bringing-up section、Microwave emitter 5、Perforated metal panel 2、Temperature sensor、Monitoring and control unit 1，Described exhaustor bringing-up section diameter is more than exhaustor linkage section diameter and exhaustor mixing section diameter，Exhaustor bringing-up section one end is connected by flange seal with exhaustor linkage section、The other end is connected by flange seal with exhaustor mixing section，Said two microwave emitter 5 is symmetrically placed in exhaustor bringing-up section and is connected，Described perforated metal panel 2 is socketed external application and and is connected in exhaustor bringing-up section，Described temperature sensor is placed between exhaustor bringing-up section and blender 3、On exhaustor mixing section and be connected，Monitoring and control unit 1 signal input part is connected with temperature sensor signal、Signal output part is connected with microwave emitter 5 signal，Junction between all of flange is equipped with pad.The present embodiment adopts prior art manufacture, and described SCR reactor 4, blender 3, microwave emitter 5, temperature sensor and monitoring and control unit 1 are the commercially available prod of prior art.
During work, aqueous solution of urea enters in exhaustor linkage section by urea nozzle 6, along with institute's aerofluxus body enters stop of short duration in exhaustor bringing-up section together, microwave emitter 5 is launched microwave and is heated to after higher than 250 DEG C, flows out from exhaustor bringing-up section, enters in the blender 3 of exhaustor mixing section and decomposes, the ammonia decomposited completely and institute's aerofluxus body are sufficiently mixed entrance SCR reactor 4, carry out SCR catalytic reaction, make nitrogen oxides effectively to be reduced by ammonia, reduce pollutant emission.Have simple in construction, with low cost, reaction is fully effective, reduces the advantage that pollutant emission is beneficial to environmental protection.
Claims (2)
- null1. a Urea mixing arrangement，It includes urea nozzle、Exhaustor linkage section、SCR reactor、Exhaustor mixing section、Blender，Described urea nozzle one end and urea pump are tightly connected、The other end stretches in exhaustor linkage section，SCR reactor is placed in the port of export of exhaustor mixing section and is tightly connected，Before blender is placed in SCR reactor、On exhaustor mixing section and be tightly connected，It is characterized in that: also include exhaustor bringing-up section、Microwave emitter、Perforated metal panel、Temperature sensor、Monitoring and control unit，Described exhaustor bringing-up section one end and exhaustor linkage section are tightly connected、The other end and exhaustor mixing section are tightly connected，At least one microwave emitter described is placed in exhaustor bringing-up section and is connected，The socket external application of described perforated metal panel and is connected in exhaustor bringing-up section，Described temperature sensor is placed between exhaustor bringing-up section and blender、On exhaustor mixing section and be connected，Monitoring and control unit signal input part is connected with temperature sensor signal、Signal output part is connected with microwave emitter signal.
- 2. a kind of Urea mixing arrangement as claimed in claim 1, is characterized in that: described exhaustor bringing-up section diameter is more than exhaustor linkage section diameter and exhaustor mixing section diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620136655.6U CN205370705U (en) | 2016-02-24 | 2016-02-24 | Urea heating mixing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620136655.6U CN205370705U (en) | 2016-02-24 | 2016-02-24 | Urea heating mixing arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205370705U true CN205370705U (en) | 2016-07-06 |
Family
ID=56271832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620136655.6U Expired - Fee Related CN205370705U (en) | 2016-02-24 | 2016-02-24 | Urea heating mixing arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205370705U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106896078A (en) * | 2017-02-15 | 2017-06-27 | 武汉启呈环保技术有限公司 | A kind of diesel engine vent gas denitration the escaping of ammonia test device |
| CN113606020A (en) * | 2021-07-16 | 2021-11-05 | 江苏伟博动力技术有限公司 | Gas-liquid mixer for waste gas purification |
| CN114247400A (en) * | 2020-09-19 | 2022-03-29 | 陕西青朗万城环保科技有限公司 | Urea pyrolysis process and device thereof |
| CN114345265A (en) * | 2020-10-12 | 2022-04-15 | 陕西青朗万城环保科技有限公司 | Method for hydrolyzing urea based on microwaves |
| CN114515489A (en) * | 2020-11-20 | 2022-05-20 | 陕西青朗万城环保科技有限公司 | Microwave ultraviolet plasma-based desulfurization and denitrification method and control system thereof |
-
2016
- 2016-02-24 CN CN201620136655.6U patent/CN205370705U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106896078A (en) * | 2017-02-15 | 2017-06-27 | 武汉启呈环保技术有限公司 | A kind of diesel engine vent gas denitration the escaping of ammonia test device |
| CN114247400A (en) * | 2020-09-19 | 2022-03-29 | 陕西青朗万城环保科技有限公司 | Urea pyrolysis process and device thereof |
| CN114345265A (en) * | 2020-10-12 | 2022-04-15 | 陕西青朗万城环保科技有限公司 | Method for hydrolyzing urea based on microwaves |
| CN114515489A (en) * | 2020-11-20 | 2022-05-20 | 陕西青朗万城环保科技有限公司 | Microwave ultraviolet plasma-based desulfurization and denitrification method and control system thereof |
| CN113606020A (en) * | 2021-07-16 | 2021-11-05 | 江苏伟博动力技术有限公司 | Gas-liquid mixer for waste gas purification |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160706 Termination date: 20170224 |