CN204511592U - A kind of SCR exhaust treatment system for motor - Google Patents
A kind of SCR exhaust treatment system for motor Download PDFInfo
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- CN204511592U CN204511592U CN201520095248.0U CN201520095248U CN204511592U CN 204511592 U CN204511592 U CN 204511592U CN 201520095248 U CN201520095248 U CN 201520095248U CN 204511592 U CN204511592 U CN 204511592U
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- urea
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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Abstract
The utility model discloses a kind of SCR exhaust treatment system for motor, relate to engine exhaust emission technical field, comprise motor, SCR controller, urea tank, urea pump, air compression tank, metering supplier, urea-spray device, SCR catalyst, outlet pipe, temperature transducer, liquid level sensor, SCR catalyst inlet temperature sensor, SCR catalyst, SCR catalyst outlet temperature sensor.The utility model SCR exhaust treatment system, SCR controller can control the urea injecting quantity under Under Different Work Condition of Engine by control measuring apparatus, atomized soln sprays in engine exhaust by urea-spray device equably, to improve the conversion efficiency of catalyzer; SCR exhaust treatment system can make nitrogen oxide on SCR catalyst surface with urea liquid through sufficient catalytic reaction, by conversion of nitrogen oxides be harmless nitrogen and water and discharge motor with outlet pipe.
Description
Technical field
The utility model relates to engine exhaust emission technical field, particularly relates to a kind of SCR exhaust treatment system for motor.
Background technique
Developing rapidly and popularizing along with automotive industry, the life for people brings many convenience.But the waste gas that motor vehicle emission goes out has become serious social effects of pollution to the pollution of air, especially the living environment of vehicle emission pollution to people has had the greatest impact one of problem of becoming extremely urgent.Tail gas pollution is directly serious threatens the healthy of people, also endangers some vegeto-animal growth simultaneously, destroys the natural ecological balance.Environment is increasingly severe, and to the lifting of prevention and control of air pollution consciousness, also increasingly strict to the requirement of toxic emission, the waste gas treatment problem of motor, turbine, boiler Deng You toxic emission mechanism obtains the extensive concern of people.In this kind of waste gas treatment, comprise the process to nitrogen oxide.
Model utility content
Model utility is in order to solve the process problem of the nitrogen oxides of exhaust gas of above-mentioned motor discharge, a kind of SCR exhaust treatment system for motor, this SCR exhaust treatment system can make nitrogen oxide on SCR catalyst surface with urea liquid through sufficient catalytic reaction, by conversion of nitrogen oxides be harmless nitrogen and water and discharge motor with outlet pipe.
The required technical problem solved of the utility model can be achieved through the following technical solutions:
A kind of SCR exhaust treatment system for motor, comprise motor, SCR controller, urea tank, urea pump, air compression tank, metering supplier, urea-spray device, outlet pipe, SCR catalyst, described SCR controller is connected with motor, urea pump, air compression tank respectively, and SCR controller controls the urea injecting quantity under Under Different Work Condition of Engine by control metering supplier; Described urea tank is connected with urea pump, and urea tank stores and supply urea liquid; Described metering supplier is connected with urea pump, compressed air cylinder respectively, and urea pump provides power for urea liquid is transported to urea-spray device, and compressed air cylinder provides pressurized air for measuring supplier, and urea liquid is atomized before metering supplier prerequisite; Atomize urea dissolution homogeneity sprays in engine exhaust pipe by described urea-spray device; Described SCR catalyst is connected with outlet pipe, at the tail gas of SCR catalyst inside exhaust pipe and the urea liquid generation purification of atomization, and discharges reaction product.
Further, liquid level sensor and temperature transducer is provided with in described urea tank.
Further, heating equipment is provided with in described urea tank.
Further, described urea tank is connected with motor by engine coolant pipe, and described heating equipment heats cooling liquid.
Further, entrance exhaust gas temperature sensor, SCR catalyst, outlet exhaust temperatures sensor is provided with in SCR catalyst.
Further, described urea-spray device is provided with nozzle.
Further, described urea-spray device is provided with nozzle for straight-through disturbed flow type nozzle or valve type nozzle.
Further, described urea-spray device by support installing on outlet pipe.
Further, described support is made up of thermal-protective material.
Further, described urea-spray device is provided with Thermal protection.
The utility model beneficial effect is: a kind of SCR exhaust treatment system for motor, urea tank is used for storage and the supply of urea liquid, urea pump provides power for urea liquid is transported to injection apparatus, SCR controller can control the urea injecting quantity under Under Different Work Condition of Engine by control measuring apparatus, atomized soln sprays in engine exhaust by urea-spray device equably, to improve the conversion efficiency of catalyzer; SCR exhaust treatment system can make nitrogen oxide on SCR catalyst surface with urea liquid through sufficient catalytic reaction, by conversion of nitrogen oxides be harmless nitrogen and water and discharge motor with outlet pipe.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described further:
Fig. 1 is the utility model SCR exhaust treatment system theory diagram.
Embodiment
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.
During concrete enforcement, shown in composition graphs 1, for a SCR exhaust treatment system for motor, comprise motor 1, SCR controller 2, urea tank 3, urea pump 4, air compression tank 5, metering supplier 6, urea-spray device 7, SCR catalyst 8, outlet pipe 9, temperature transducer 10, liquid level sensor 11, SCR catalyst inlet temperature sensor 12, SCR catalyst 13, SCR catalyst outlet temperature sensor 14.SCR controller 2 is connected with motor 1, urea pump 3, air compression tank 5 respectively, and SCR controller 2 controls the urea injecting quantity under the different operating mode of motor 1 by control metering supplier 6; Urea tank 3 is connected with urea pump 4, and urea tank 3 stores and supplies urea liquid; Metering supplier 6 is connected with urea pump 4, compressed air cylinder 5 respectively, urea pump 4 provides power for urea liquid is transported to urea-spray device 7, compressed air cylinder 5 provides pressurized air for measuring supplier 6, and urea liquid is atomized before metering supplier 6 prerequisite; Atomize urea dissolution homogeneity sprays in engine exhaust pipe 9 by urea-spray device 7; SCR catalyst 8 is connected with outlet pipe 9, at the tail gas of SCR catalyst 8 inside exhaust pipe and the urea liquid generation purification of atomization, and discharges reaction product.
Urea tank 3 is for the storage of urea liquid and supply.Urea tank is provided with liquid level sensor 11, temperature transducer 10 and heating equipment.Liquid level sensor is used for system diagnostics, amount of urea monitoring and low liquid level warning.Temperature transducer, for monitoring the temperature of urea liquid, determines whether to need to start or cut out heating equipment, prevents urea liquid from freezing or overheated.Urea tank is connected with motor by engine coolant pipe, and heating equipment heats engine coolant.Utilize engine coolant to realize to the heating of urea liquid more.
Urea pump 4 provides power for urea liquid is transported to urea-spray device.Compressed air cylinder 5 provides pressurized air for giving metering supplier 6, urea droplets is atomized before metering supplier prerequisite, and the urea liquid in pipeline can be blown down clean, prevents urea residual crystallization in pipeline from blocking pipeline.
SCR controller 2 can control the urea injecting quantity under Under Different Work Condition of Engine by control metering supplier, and has the function of faults of monitoring system.Atomized soln mainly sprays in engine exhaust by urea-spray device equably, to improve the conversion efficiency of catalyzer.Urea-spray device 7 is provided with nozzle, and it can be straight-through disturbed flow type nozzle or valve type nozzle that urea-spray device is provided with nozzle.Urea-spray device is by support installing on outlet pipe, and support is made up of thermal-protective material or urea-spray device is provided with Thermal protection.SCR catalyst is made up of carrier, coating, encapsulation 3 part, is the main place of carrying out purification.Entrance exhaust gas temperature sensor 12, SCR catalyst 13, outlet exhaust temperatures sensor 14 is provided with in SCR catalyst.The temperature transducer that SCR catalyst is installed can detect catalyzer and whether meet the requirements of temperature to ensure normally carrying out of catalytic reduction reaction, and determines the urea amount that needs to spray into accordingly.
During the work of SCR exhaust treatment system, urea liquid in urea pump running sucking-off urea tank, under the compressed-air actuated effect that compressed air cylinder provides, urea liquid is atomized in advance with pressurized air and mixes in metering supplier, and certain urea liquid is ejected in the outlet pipe before SCR catalyst by urea-spray device by the urea injecting quantity control signal that metering supplier transmits according to SCR controller.Moisture in outlet pipe in urea liquid gasifies rapidly, the ammonia that urea decomposition goes out enters SCR catalyst with exhaust, again after ammonia diffuser mixes further, on catalyst converter surface with nitrogen oxide through sufficient catalytic reaction, by conversion of nitrogen oxides be harmless nitrogen and water and discharge motor with outlet pipe.
More than show and describe basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (10)
1. the SCR exhaust treatment system for motor, comprise motor, outlet pipe, SCR controller, it is characterized in that: also comprise urea tank, urea pump, air compression tank, metering supplier, urea-spray device, SCR catalyst, described SCR controller is connected with motor, urea pump, air compression tank respectively, and SCR controller controls the urea injecting quantity under Under Different Work Condition of Engine by control metering supplier; Described urea tank is connected with urea pump, and urea tank stores and supply urea liquid; Described metering supplier is connected with urea pump, compressed air cylinder respectively, and urea pump provides power for urea liquid is transported to urea-spray device, and compressed air cylinder provides pressurized air for measuring supplier, and urea liquid is atomized before metering supplier prerequisite; Atomize urea dissolution homogeneity sprays in engine exhaust pipe by described urea-spray device; Described SCR catalyst is connected with outlet pipe, at the tail gas of SCR catalyst inside exhaust pipe and the urea liquid generation purification of atomization, and discharges reaction product.
2., according to a kind of SCR exhaust treatment system for motor shown in claim 1, it is characterized in that: in described urea tank, be provided with liquid level sensor and temperature transducer.
3., according to a kind of SCR exhaust treatment system for motor shown in claim 2, it is characterized in that: in described urea tank, be provided with heating equipment.
4., according to a kind of SCR exhaust treatment system for motor shown in claim 3, it is characterized in that: described urea tank is connected with motor by engine coolant pipe, described heating equipment heats cooling liquid.
5., according to a kind of SCR exhaust treatment system for motor shown in claim 1, it is characterized in that: in SCR catalyst, be provided with entrance exhaust gas temperature sensor, SCR catalyst, outlet exhaust temperatures sensor.
6., according to a kind of SCR exhaust treatment system for motor shown in claim 1, it is characterized in that: described urea-spray device is provided with nozzle.
7. according to a kind of SCR exhaust treatment system for motor shown in claim 6, it is characterized in that: described urea-spray device is provided with nozzle for straight-through disturbed flow type nozzle or valve type nozzle.
8., according to a kind of SCR exhaust treatment system for motor shown in claim 1, it is characterized in that: described urea-spray device by support installing on outlet pipe.
9., according to a kind of SCR exhaust treatment system for motor shown in claim 8, it is characterized in that: described support is made up of thermal-protective material.
10., according to a kind of SCR exhaust treatment system for motor shown in claim 8, it is characterized in that: described urea-spray device is provided with Thermal protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520095248.0U CN204511592U (en) | 2015-02-10 | 2015-02-10 | A kind of SCR exhaust treatment system for motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520095248.0U CN204511592U (en) | 2015-02-10 | 2015-02-10 | A kind of SCR exhaust treatment system for motor |
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| CN204511592U true CN204511592U (en) | 2015-07-29 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105986861A (en) * | 2015-02-10 | 2016-10-05 | 安徽艾可蓝节能环保科技有限公司 | SCR tail gas treatment system for engine |
| CN107376644A (en) * | 2017-06-14 | 2017-11-24 | 北京福田戴姆勒汽车有限公司 | The urea mixed-flow structure of exhaust treatment system |
| CN115217584A (en) * | 2022-03-01 | 2022-10-21 | 广州汽车集团股份有限公司 | Exhaust gas treatment device and exhaust gas treatment method for hydrogen engine, and vehicle |
| TWI789578B (en) * | 2020-04-10 | 2023-01-11 | 睿普工程股份有限公司 | Exhaust emission recovery and voltage stabilization control system |
-
2015
- 2015-02-10 CN CN201520095248.0U patent/CN204511592U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105986861A (en) * | 2015-02-10 | 2016-10-05 | 安徽艾可蓝节能环保科技有限公司 | SCR tail gas treatment system for engine |
| CN107376644A (en) * | 2017-06-14 | 2017-11-24 | 北京福田戴姆勒汽车有限公司 | The urea mixed-flow structure of exhaust treatment system |
| CN107376644B (en) * | 2017-06-14 | 2020-07-28 | 北京福田戴姆勒汽车有限公司 | Urea mixed flow structure of tail gas treatment system |
| TWI789578B (en) * | 2020-04-10 | 2023-01-11 | 睿普工程股份有限公司 | Exhaust emission recovery and voltage stabilization control system |
| CN115217584A (en) * | 2022-03-01 | 2022-10-21 | 广州汽车集团股份有限公司 | Exhaust gas treatment device and exhaust gas treatment method for hydrogen engine, and vehicle |
| CN115217584B (en) * | 2022-03-01 | 2024-03-08 | 广州汽车集团股份有限公司 | Exhaust gas treatment device and exhaust gas treatment method for hydrogen engine, and vehicle |
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Address after: 247100 Industrial Zone, Guichi District, Anhui, Chizhou Patentee after: ACTBLUE CO., LTD. Address before: 247100 Industrial Zone, Guichi District, Anhui, Chizhou Patentee before: Anhui ActBlue Co., Ltd. |