CN211648282U - SCR urea supply injection system of marine diesel engine - Google Patents
SCR urea supply injection system of marine diesel engine Download PDFInfo
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- CN211648282U CN211648282U CN201922020915.XU CN201922020915U CN211648282U CN 211648282 U CN211648282 U CN 211648282U CN 201922020915 U CN201922020915 U CN 201922020915U CN 211648282 U CN211648282 U CN 211648282U
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- urea solution
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1433—Pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
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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
- Y02T10/12—Improving ICE efficiencies
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The utility model provides a marine diesel engine SCR urea supplies with injection system, including pump assembly unit, metering unit and the injection unit that links to each other in proper order. The pump unit is used for conveying urea solution and stabilizing the pressure of the urea solution; the injection unit is used for injecting urea solution; the metering unit comprises a urea solution pipeline, a compressed air pipeline, an atomizing air pipeline and a purging air pipeline and is used for treating compressed air and urea solution. The two ends of the urea solution pipeline are respectively connected with the pump unit and the injection unit and are used for transferring the urea solution; the compressed air pipeline is used for receiving compressed air; the atomized air pipeline is used for conveying compressed air of the atomized urea solution; the purge air line is used to deliver compressed air for flushing and cooling the spray unit. The utility model discloses in, the metering unit is provided with the air pipe way that sweeps alone, can carry out abundant washing and cooling to the spray gun nozzle in the injection unit.
Description
Technical Field
The utility model discloses generally relate to marine diesel engine tail gas aftertreatment's technical field, more specifically relate to a marine diesel engine SCR (Selective Catalytic Reduction, Selective Catalytic Reduction technique) urea supplies with injection system.
Background
The Selective Catalytic Reduction (SCR) technology aims at NO in tail gas emission of diesel engineXThe treatment process of (1) is to spray reducing agent ammonia or urea under the action of catalyst to treat NO in tail gasXReduction to N2And H2And O. Use of SCR for NO in marine diesel exhaustXThe mainstream technique of post-processing. The SCR urea supply injection system is a core component of the SCR system and is an actuating mechanism for realizing urea solution supply, accurate metering and atomized injection.
In the prior art, an exhaust gas aftertreatment device of a marine diesel engine mainly follows the design idea of an SCR urea supply injection system for vehicles and power stations. In the aftertreatment of the tail gas of the marine diesel engine oil, a metering injection pump is often used for conveying and metering the urea solution, and the atomization injection of the urea solution is completed by compressed air with certain pressure. However, the arrangement of the air pipeline and the urea pipeline is inconvenient, the washing and cooling effects of the spray gun nozzle are insufficient, the pipeline is easily corroded, and the atomization effect is influenced.
Therefore, there is a need to provide a marine diesel engine SCR urea supply injection system to at least partially solve the above problems.
SUMMERY OF THE UTILITY MODEL
In the summary section a series of concepts in a simplified form is introduced, which will be described in further detail in the detailed description section. The inventive content does not imply any attempt to define the essential features and essential features of the claimed solution, nor is it implied to be intended to define the scope of the claimed solution.
For at least partly solving above-mentioned problem, the utility model provides an injection system is supplied with to marine diesel engine SCR urea, include:
the pump unit comprises a supply pipeline, and one end of the supply pipeline is connected with a urea storage device and used for conveying urea solution;
an injection unit for injecting the urea solution and compressed air; and
a metering unit connected with the pump unit and the injection unit, respectively, for treating the urea solution and the compressed air, the metering unit including:
a urea solution pipeline, one end of which is connected with the supply pipeline and the other end of which is connected with the injection unit, for conveying the urea solution;
a compressed air line for receiving and delivering the compressed air; one end of the atomization air pipeline is connected with the compressed air pipeline, the other end of the atomization air pipeline is connected with the injection unit, and the atomization air pipeline is used for conveying the compressed air for atomizing the urea solution;
and one end of the purge air pipeline is connected with the compressed air pipeline, the other end of the purge air pipeline is connected with the urea solution pipeline, and the purge air pipeline is used for conveying the compressed air for flushing and cooling the injection unit.
Optionally, the pump unit further includes a pressure stabilizing circuit communicated with the supply pipeline, and an overflow valve is arranged on the pressure stabilizing circuit and used for maintaining the pressure of the urea solution in the supply pipeline constant.
Optionally, the pressure stabilizing circuit is in communication with the urea storage device such that the urea solution in the pressure stabilizing circuit can be returned to the urea storage device through the relief valve.
Optionally, the pump unit comprises a centrifugal pump arranged on the supply line for drawing the urea solution from the urea storage device.
Optionally, each pump unit is provided with at least two supply lines provided with the centrifugal pump.
Optionally, the pump unit is connected with at least three metering units, and each metering unit is connected with the injection unit.
Optionally, the compressed air line is provided with a first pressure reducing valve and the purge air line is provided with a second pressure reducing valve.
Optionally, the pressure value set by the first pressure reducing valve is greater than the pressure value set by the second pressure reducing valve.
Optionally, at least one of a filter, a ball valve, a check valve, a solenoid valve, and a pressure sensor is disposed on the compressed air line and/or the urea solution line.
According to the utility model discloses an injection system is supplied with to marine diesel engine SCR urea, including pump package unit, metering unit and the injection unit that connects gradually. The pump unit comprises a supply pipeline connected with a urea storage device and is used for conveying urea solution and stabilizing the pressure of the urea solution; the injection unit is used for injecting the atomized urea solution; the metering unit comprises a urea solution pipeline, a compressed air pipeline, an atomized air pipeline and a purging air pipeline and is used for processing urea solution and compressed air, two ends of the urea solution pipeline are respectively connected with the supply pipeline and the injection unit, the compressed air pipeline is used for receiving and conveying the compressed air, and one ends of the atomized air pipeline and one end of the purging air pipeline are both connected with the compressed air pipeline. The other end of the atomized air pipeline is connected with the injection unit and used for conveying compressed air of the atomized urea solution; the other end of the purge air line is connected to the urea solution line for delivering compressed air for flushing and cooling the injection unit. Through the utility model discloses a marine diesel engine SCR urea supplies with injection system can handle the tail gas that the diesel engine produced effectively, can carry out abundant washing and cooling to the injection unit around the SCR operation simultaneously, avoids corroding the pipeline.
Drawings
The following drawings of the embodiments of the present invention are provided as a part of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions thereof, which are used to explain the principles of the invention. In the drawings, there is shown in the drawings,
fig. 1 is a schematic diagram of a marine diesel engine SCR urea supply injection system according to a preferred embodiment of the present invention;
description of reference numerals:
100: the pump unit 101: supply line
102: the voltage stabilizing circuit 103: overflow valve
104: centrifugal pump 105: relief valve
106: first outlet 107: second outlet
108: third outlet 200: metering unit
201: urea solution line 202: compressed air pipeline
203: atomizing air line 204: purge air line
205: first pressure reducing valve 206: second pressure reducing valve
300: injection unit
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that embodiments of the invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring embodiments of the present invention.
In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the invention. It is apparent that the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art.
The utility model provides a marine diesel engine SCR urea supplies with injection system. As shown in fig. 1, the marine diesel engine SCR urea supply injection system includes a pump unit 100, an injection unit 300, and a metering unit 200. The pump unit 100 includes a supply pipeline 101, one end of the supply pipeline 101 is connected to a urea storage device (not shown), the other end is connected to a metering unit 200, and the pump unit 100 is mainly used for extracting urea solution from the urea storage device, performing primary filtration, stabilizing the pressure of the urea solution, and then delivering the urea solution to the metering unit 200. The injection unit 300 is connected to the metering unit 200, and injects the urea solution supplied from the metering unit 200 together with the compressed air, thereby achieving an effect of injecting the atomized urea solution. Preferably, the urea storage device may be a urea tank, and the urea tank may be pre-installed near the marine diesel engine, and the injection unit 300 may be a spray gun.
The metering unit 200 is mainly used for processing compressed air and urea solution, and the metering unit 200 comprises a urea solution pipeline 201, a compressed air pipeline 202, an atomization air pipeline 203 and a purge air pipeline 204. The urea solution line 201 has one end connected to the supply line 101 of the pump unit 100 and the other end connected to the injection unit 300, and the urea solution line 201 is mainly used for treating and delivering urea solution. The compressed air line 202 is mainly used for receiving and delivering compressed air, one end of each of the atomization air line 203 and the purge air line 204 is connected with the compressed air line 202, the other end of the atomization air line 203 is connected with the injection unit 300, and the other end of the purge air line 204 is connected with the urea solution line 201. That is, in the metering unit 200, the compressed air firstly enters the compressed air line 202 and then enters the atomizing air line 203 and the purge air line 204 respectively, wherein the compressed air entering the atomizing air line 203 and the urea solution in the urea solution line 201 are sprayed out through the spraying unit 300 together to achieve the function of atomizing the urea solution, and the compressed air entering the purge air line 204 enters the urea solution line 201 and then is sprayed out through the spraying unit 300, so that the spraying unit 300 can be cooled and flushed. Preferably, the injection unit 300 may be flushed and cooled with compressed air in the purge air line 204 before and/or after spraying the atomized urea solution.
It should be noted that, as shown in fig. 1, an air compressor may be connected to one end of the compressed air pipe 202 to obtain compressed air in time. Of course, one end of the compressed air pipe 202 may be directly connected to the outside air, and then an air pump (not shown) may be added to the compressed air pipe 202 to obtain the compressed air. The operation principle of the SCR urea supply injection system of the marine diesel engine is only shown in fig. 1, and the structures and the arrangements of other devices related to the SCR urea supply injection system are known to those skilled in the art, and are not shown and described in detail herein.
Through the utility model provides a marine diesel engine SCR urea supplies with injection system can be used to marine diesel for NO in the tail gas that discharges marine dieselXReduction to N2And H2And O, the air pollution can be reduced, and the effects of energy conservation and emission reduction are realized. In the metering unit 200, an atomizing air line 203 and a purge air line 204 are respectively provided, the atomizing air line 203 can deliver compressed air for injecting atomized urea solution, and the purge air line 204 can deliver compressed air to sufficiently cool and flush the injection unit 300, so as to avoid corrosion of the lines.
Preferably, the pump unit 100 further includes a pressure stabilizing circuit 102 communicated with the supply pipeline 101, the pressure stabilizing circuit 102 is provided with an overflow valve 103, and the overflow valve 103 is used for maintaining the pressure of the urea solution in the supply pipeline 101 constant, so as to ensure that the urea solution delivered to the metering unit 200 has a certain pressure and improve the atomization effect of the urea solution. Furthermore, the supply line 101 is further provided with a check valve (not shown), and by such an arrangement, not only can the urea solution in the supply line 101 be prevented from flowing back, but also the urea solution conveyed in the supply line 101 can be ensured to have a stable pressure value.
Further, the surge tank 102 communicates with a urea storage device (not shown). That is, one end of the pressure stabilizing circuit 102 is connected to the supply line 101, and the other end is connected to the urea storage device, so that the pressure in the supply line 101 is ensured to be stable, and the surplus urea solution can be returned to the urea storage device, thereby realizing the recycling of the urea solution.
Accordingly, in order to ensure that the pump unit 100 can stably draw the urea solution from the urea storage device, a centrifugal pump 104 is further provided on the supply line 101 of the pump unit 100. Furthermore, at least two supply lines 101 provided with centrifugal pumps 104 are provided in each pump unit 100, so that the supply of urea solution to the entire SCR urea supply injection system can be achieved at one time, i.e. in the actual operating state, only one supply line 101 provided with a centrifugal pump 104 needs to be operated, and the other supply line 101 provided with a centrifugal pump 104 serves as a backup line, so that when one of the centrifugal pumps 104 fails and stops operating, the supply of urea solution can be maintained by activating the other centrifugal pump 104.
The pump unit 100 furthermore comprises a relief valve 105 connected to the supply line 101, by opening the relief valve 105 the pressure of the urea solution in the supply line 101 can be reduced and at the same time the urea solution in the supply line 101 can be released.
A ship usually includes a main engine and a plurality of auxiliary engines, and these diesel engines generate a large amount of NO during operationXAnd the exhaust gases need to be treated with NO by means of an atomized urea solution before being dischargedXThe treatment is carried out, and urea solutions with different pressures and specifications are also required for treatment due to different power. In the present embodiment, at least three metering units 200 are externally connected to each pump unit 100, and an injection unit 300 is connected to each metering unit 200. Specifically, for example, one main engine and two auxiliary engines are provided on one ship, and each ship diesel engine is provided with the metering unit 200 and the injection unit respectivelyThe units 300, and the metering units 200 are all connected to the same pump unit 100, that is, the pump unit 100 pumps the urea solution in the urea storage device and distributes the urea solution to three different metering units 200, and processes the exhaust gas of different diesel engines. Therefore, one pump station can be provided with three sets of metering units 200 and injection units 300 with different requirements, and tail gas treatment can be simultaneously carried out on three diesel engines. As shown in fig. 1, the pump unit 100 is provided with three outlets for delivering urea solution, wherein the first outlet 106 is connected to one metering unit 200, and the second outlet 107 and the third outlet 108 are connected to two other metering units (not shown).
Preferably, the compressed air line 202 is provided with a first pressure reducing valve 205 and the nebulizing air line 203 is provided with a second pressure reducing valve 206 for reducing the pressure of the compressed air in the compressed air line 202 to a predetermined value. The first pressure reducing valve 205 is mainly used for controlling the pressure of the compressed air in the purge air line 204, and the second pressure reducing valve 206 is mainly used for controlling the pressure of the compressed air in the atomization air line 203.
Further, the pressure value of the compressed air required for atomizing the urea solution is lower than the pressure value of the compressed air in the purge air line 204. Therefore, the pressure value set by the first pressure reducing valve 205 is larger than the pressure value set by the second pressure reducing valve 206, so that the compressed air can be sufficiently flushed out of the cooling injection unit 300 while satisfying the urea solution atomization effect.
Furthermore, at least one of a filter (not shown), a ball valve (not shown), a check valve (not shown), a solenoid valve (not shown), and a pressure sensor (not shown) is provided on the compressed air line 202 and/or the urea solution line 201. In the compressed air line 202, a filter may provide further filtering of the compressed air, and ball valves, check valves and solenoid valves may ensure a one-way flow of compressed air in the compressed air line 202 and regulate and control the flow of compressed air. The pressure sensor enables the operator to obtain the pressure in the compressed air line 202 in order to regulate the pressure in the compressed air line 202 by means of a ball valve and a solenoid valve, depending on the situation. For example, it can be based on diesel exhaustThe pressure of the compressed air is adjusted correspondingly to the discharge rate so as to lead the urea solution and NO in the tail gasXAnd (4) fully reacting. In the urea solution pipeline 201, the filter can play further filtering role to the urea solution, and ball valve, check valve and solenoid valve can guarantee the one-way flow of urea solution in the urea solution pipeline 201 and adjust and control the circulation of urea solution. The pressure sensor enables the staff to obtain the pressure in the urea solution pipeline 201 so as to adjust the pressure in the urea solution pipeline 201 through a ball valve and an electromagnetic valve according to actual conditions.
In addition, a proportional valve (not shown) and a flow meter (not shown) are further arranged in the urea solution pipeline 201, and the proportional valve and the flow meter are used for stably controlling the injection amount of the urea solution under the condition of accurately metering the usage amount of the urea solution, so that waste caused by excessive injection of the urea solution can be avoided, and the problem that the urea solution is too little to be mixed with NO in the tail gas can also be avoidedXAnd (4) fully reacting.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Terms such as "disposed" and the like, as used herein, may refer to one element being directly attached to another element or one element being attached to another element through intervening elements. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.
The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. It will be appreciated by those skilled in the art that many more modifications and variations are possible in light of the above teaching and are intended to be included within the scope of the invention.
Claims (9)
1. An SCR urea supply injection system of a marine diesel engine, comprising:
the pump unit comprises a supply pipeline, and one end of the supply pipeline is connected with a urea storage device and used for conveying urea solution;
an injection unit for injecting the urea solution and compressed air; and
a metering unit connected with the pump unit and the injection unit, respectively, for treating the urea solution and the compressed air, the metering unit including:
a urea solution pipeline, one end of which is connected with the supply pipeline and the other end of which is connected with the injection unit, for conveying the urea solution;
a compressed air line for receiving and delivering the compressed air;
one end of the atomization air pipeline is connected with the compressed air pipeline, the other end of the atomization air pipeline is connected with the injection unit, and the atomization air pipeline is used for conveying the compressed air for atomizing the urea solution;
and one end of the purge air pipeline is connected with the compressed air pipeline, the other end of the purge air pipeline is connected with the urea solution pipeline, and the purge air pipeline is used for conveying the compressed air for flushing and cooling the injection unit.
2. The SCR urea supply injection system of claim 1, wherein the pump unit further comprises a pressure stabilizing circuit communicated with the supply pipeline, and an overflow valve is arranged on the pressure stabilizing circuit and used for maintaining the pressure of the urea solution in the supply pipeline constant.
3. The marine diesel engine SCR urea supply injection system of claim 2, wherein the surge tank communicates with the urea storage device so that the urea solution in the surge tank can be returned to the urea storage device through the relief valve.
4. Marine diesel engine SCR urea supply injection system according to claim 1, characterized in that the pump unit comprises a centrifugal pump arranged on the supply line for drawing the urea solution from the urea storage.
5. Marine diesel engine SCR urea supply injection system according to claim 4, characterized in that each pump group unit is provided with at least two supply lines provided with said centrifugal pump.
6. The marine diesel engine SCR urea supply injection system of claim 1, wherein the pump unit is connected to at least three metering units, and the injection unit is connected to each metering unit.
7. The marine diesel engine SCR urea supply injection system of claim 1, wherein the compressed air line is provided with a first pressure reducing valve and the purge air line is provided with a second pressure reducing valve.
8. The marine diesel engine SCR urea supply injection system of claim 7, wherein the first pressure relief valve is set at a pressure value greater than the pressure value set by the second pressure relief valve.
9. The marine diesel engine SCR urea supply injection system of claim 1, wherein at least one of a filter, a ball valve, a check valve, a solenoid valve, and a pressure sensor is disposed on the compressed air line and/or the urea solution line.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2019109645349 | 2019-10-11 | ||
| CN201910964534 | 2019-10-11 |
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| CN211648282U true CN211648282U (en) | 2020-10-09 |
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| CN201911129651.XA Pending CN112648049A (en) | 2019-10-11 | 2019-11-18 | SCR urea supply injection system of marine diesel engine |
| CN201922020915.XU Active CN211648282U (en) | 2019-10-11 | 2019-11-18 | SCR urea supply injection system of marine diesel engine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112648049A (en) * | 2019-10-11 | 2021-04-13 | 中国船舶重工集团公司第七一一研究所 | SCR urea supply injection system of marine diesel engine |
| CN113864030A (en) * | 2021-08-16 | 2021-12-31 | 安庆中船柴油机有限公司 | Diesel engine airborne urea injection system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718704B (en) * | 2022-04-18 | 2023-11-14 | 江苏省镇江船厂（集团）有限公司 | SCR denitration system of full-rotation tugboat |
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| US8359833B2 (en) * | 2009-12-23 | 2013-01-29 | Caterpillar Inc. | Method for introducing a reductant into an exhaust stream |
| KR102151281B1 (en) * | 2015-02-23 | 2020-09-02 | 현대중공업 주식회사 | Apparatus and Method for Urea Purge in Selective Catalytic Reduction System |
| CN106555643A (en) * | 2015-09-28 | 2017-04-05 | 中国船舶重工集团公司第七研究院 | Ship machine SCR multichannel jet control systems |
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| KR102466782B1 (en) * | 2016-05-27 | 2022-11-16 | 에이치에스디엔진 주식회사 | Reductant supply system |
| CN106762047B (en) * | 2016-12-30 | 2023-02-28 | 沪东重机有限公司 | Selective catalytic reduction urea injection system of marine diesel engine |
| CN108661758A (en) * | 2017-04-01 | 2018-10-16 | 中国船舶重工集团公司第七研究所 | SCR supplies spraying system and ship |
| CN207847735U (en) * | 2018-01-05 | 2018-09-11 | 中国重汽集团济南动力有限公司 | A kind of urea injection system |
| CN208089382U (en) * | 2018-03-12 | 2018-11-13 | 成都市润天祥环保科技有限公司 | A kind of SCR denitration system injection cabinet of suitable distributed internal combustion engine |
| CN112648049A (en) * | 2019-10-11 | 2021-04-13 | 中国船舶重工集团公司第七一一研究所 | SCR urea supply injection system of marine diesel engine |
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2019
- 2019-11-18 CN CN201911129651.XA patent/CN112648049A/en active Pending
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112648049A (en) * | 2019-10-11 | 2021-04-13 | 中国船舶重工集团公司第七一一研究所 | SCR urea supply injection system of marine diesel engine |
| CN113864030A (en) * | 2021-08-16 | 2021-12-31 | 安庆中船柴油机有限公司 | Diesel engine airborne urea injection system |
| CN113864030B (en) * | 2021-08-16 | 2022-06-14 | 安庆中船柴油机有限公司 | Diesel engine airborne urea injection system |
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|---|---|
| CN112648049A (en) | 2021-04-13 |
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Effective date of registration: 20210104 Address after: 201108 building 6, 4299 Jindu Road, Minhang District, Shanghai Patentee after: Shanghai Qiyao Environmental Protection Technology Co.,Ltd. Address before: 201108 Shanghai city Minhang District Huaning Road No. 3111 Patentee before: China Shipbuilding Industry Corporation 711 Research Institute |