CN112727578B - Marine diesel emission reduction control system and method - Google Patents
Marine diesel emission reduction control system and method Download PDFInfo
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- CN112727578B CN112727578B CN202011306884.5A CN202011306884A CN112727578B CN 112727578 B CN112727578 B CN 112727578B CN 202011306884 A CN202011306884 A CN 202011306884A CN 112727578 B CN112727578 B CN 112727578B
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- control system
- urea
- central processing
- processing unit
- soot blowing
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- 238000000034 method Methods 0.000 title claims abstract description 16
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 75
- 239000004202 carbamide Substances 0.000 claims abstract description 75
- 238000001514 detection method Methods 0.000 claims abstract description 47
- 238000007664 blowing Methods 0.000 claims abstract description 41
- 239000004071 soot Substances 0.000 claims abstract description 41
- 238000002347 injection Methods 0.000 claims abstract description 36
- 239000007924 injection Substances 0.000 claims abstract description 36
- 238000004088 simulation Methods 0.000 claims abstract description 20
- 238000004891 communication Methods 0.000 claims description 3
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 3
- 238000006722 reduction reaction Methods 0.000 description 13
- 238000010531 catalytic reduction reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- F01N9/00—Electrical control of exhaust gas treating apparatus
-
- 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
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
-
- 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]
- F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention discloses an emission reduction control system of a marine diesel engine, which comprises a reactor, a venturi tube unit, a fan unit, an afterburning unit, a urea supply unit, a valve control system, a simulation platform, an SCR control box, an emission reduction control system and a central processing unit, wherein the central processing unit comprises a soot blowing control system, a urea injection system, an afterburning control system and a fan control system, the urea injection system comprises a urea injection assembly for injecting urea, a urea detection assembly for detecting the injection amount of the urea and a urea feedback sensor, and the central processing unit judges whether the system is normal or not according to signals transmitted by the soot blowing control system, the urea injection system, the afterburning control system and the fan control system. The safety and the functionality of the electric control system are checked through the cooperation of the soot blowing control system, the urea injection system, the afterburning control system and the fan control system, so that the degree of automation is high, and the safety degree is improved. The invention also discloses a marine diesel emission reduction control method.
Description
Technical Field
The invention relates to the field of marine diesel engines, in particular to an emission reduction control system and method for a marine diesel engine.
Background
At present, selective catalytic reduction is widely used as a good exhaust aftertreatment strategy. The selective catalytic reduction reaction is divided into a high-pressure type and a low-pressure type, and compared with the high-pressure type, the low-pressure type has a lower temperature because the supercharger is arranged in front of the reactor, so that the low-pressure type needs to be provided with fuel gas to improve the temperature of tail gas, and the requirement of the catalytic reduction reaction on the temperature is met, so that the requirement on the operation safety of a low-pressure type system is higher.
However, the existing marine diesel exhaust emissions have the following drawbacks:
the existing marine diesel emission reduction control system generally cannot test the safety and the functionality of an electrical control system, and has a small number of systems capable of testing the safety and the functionality of the system, but has the advantages of complex structure, more debugging personnel, low automation degree and low safety degree.
Disclosure of Invention
In order to overcome the defects in the prior art, one of the purposes of the invention is to provide a marine diesel emission reduction control system and a marine diesel emission reduction control method, which can solve the problem of low safety degree.
One of the purposes of the invention is realized by adopting the following technical scheme:
the utility model provides a marine diesel engine emission reduction control system, includes reactor, venturi unit, fan unit, afterburning unit, urea supply unit, valve control system, simulation platform, SCR control box, emission reduction control system and central processing unit, the reactor respectively with venturi unit, valve control system are connected, the SCR control box respectively with valve control system, simulation platform are connected, fan unit respectively with venturi unit with valve control system is connected, urea supply unit respectively with afterburning unit with valve control system is connected, central processing unit includes soot blowing control system, urea injection system, the afterburning control system that is used for detecting the afterburning state, the fan control system that is used for detecting the fan state, urea injection system includes urea injection subassembly, urea detection subassembly and urea feedback sensor that is used for detecting urea jet-out volume, central processing unit judges whether the system is normal according to the signal that control system, urea injection system, afterburning control system, fan control system transmit.
Further, the soot blowing control system comprises a soot blowing detection end for detecting the soot blowing state and a soot blowing feedback sensor for feeding back.
Further, the SCR control box establishes communication connection with the central processing unit.
Further, the simulation platform comprises a manual controller and an automatic controller.
The emission reduction control method of the marine diesel engine comprises the following steps:
a signal generation step: the simulation station generates a simulation signal and sends the simulation signal to the central processing unit;
a first detection step: the soot blowing control system detects whether the soot blowing state meets the standard, if yes, the next step is executed, and if not, an alarm signal is sent to the central processing unit;
and a second detection step: the urea injection system detects whether the urea injection quantity meets the standard, if yes, the next step is executed, and if not, an alarm signal is sent to the central processing unit;
and a third detection step: the afterburning control system detects whether the afterburning state meets the standard, if so, the next step is executed, and if not, an alarm signal is sent to the central processing unit;
fourth detection step: and the fan control system detects whether the fan state meets the standard, if so, the next step is executed, and if not, an alarm signal is sent to the central processing unit.
Further, in the first detection step, the soot blowing detection end sends a detection value to a soot blowing feedback sensor, and the soot blowing feedback sensor sends a detection signal to a central processing unit for analysis.
Further, in the second detection step, the urea injection assembly injects urea with a set value, the urea detection assembly detects an actual value of the urea and sends the actual value of the urea to the urea feedback sensor, and the urea feedback sensor sends a detection signal to the central processing unit for analysis.
Further, the marine diesel emission reduction control method further comprises an output step of: ending the analog signal of the central processing unit, and sending a signal to the valve control system by the central processing unit.
Further, in the third detection step, if the afterburning control system sends out an alarm signal, the afterburning facility is immediately closed.
Further, in the fourth detection step, if the fan control system sends out an alarm signal, the fan is immediately turned off.
Compared with the prior art, the invention has the beneficial effects that:
the central processing unit comprises a soot blowing control system for detecting a soot blowing state, a urea injection system, an afterburning control system for detecting an afterburning state and a fan control system for detecting a fan state, wherein the urea injection system comprises a urea injection assembly for injecting urea, a urea detection assembly for detecting the urea injection amount and a urea feedback sensor, and the central processing unit judges whether the system is normal or not according to signals transmitted by the soot blowing control system, the urea injection system, the afterburning control system and the fan control system. The safety and the functionality of the electric control system are checked through the cooperation of the soot blowing control system, the urea injection system, the afterburning control system and the fan control system, so that the degree of automation is high, and the safety degree is improved.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention, as well as the preferred embodiments thereof, together with the following detailed description of the invention, given by way of illustration only, together with the accompanying drawings.
Drawings
FIG. 1 is a block diagram of a marine diesel emission abatement control system according to a preferred embodiment of the present invention;
FIG. 2 is another block diagram of the emission abatement control system of the marine diesel engine of FIG. 1;
FIG. 3 is a flow chart of a marine diesel emission abatement control method. .
In the figure: 1. a reactor; 2. a venturi unit; 3. a blower unit; 4. an afterburning unit; 5. a urea supply unit; 6. a valve control system; 7. a simulation station; 8. an SCR control box; 9. and an emission reduction control system.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.
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 a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
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 invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1-2, an emission reduction control system of a marine diesel engine comprises a reactor 1, a venturi tube unit 2, a fan unit 3, an afterburning unit 4, a urea supply unit 5, a valve control system 6, a simulation table 7, an SCR control box 8, an emission reduction control system 9 and a central processing unit, wherein the reactor 1 is respectively connected with the venturi tube unit 2 and the valve control system 6, the SCR control box 8 is respectively connected with the valve control system 6 and the simulation table 7, the fan unit 3 is respectively connected with the venturi tube unit 2 and the valve control system 6, the urea supply unit 5 is respectively connected with the afterburning unit 4 and the valve control system 6, the central processing unit comprises a soot blowing control system for detecting the state, a urea injection system, an afterburning control system for detecting the state, a fan control system for detecting the state of the fan, the urea injection system comprises a urea injection component for injecting urea, a urea detection component for detecting the urea injection quantity and a urea feedback sensor, and the central processing unit judges whether the soot blowing control system transmits a normal signal or not according to the control system, the urea injection control system and the fan control system. The safety and the functionality of the electric control system are checked through the cooperation of the soot blowing control system, the urea injection system, the afterburning control system and the fan control system, so that the degree of automation is high, and the safety degree is improved.
Preferably, the soot blowing control system comprises a soot blowing detection end for detecting the soot blowing state and a soot blowing feedback sensor for feeding back. The SCR control box 8 establishes a communication connection with the central processing unit. The simulation station 7 comprises a manual controller and an automatic controller.
Referring to fig. 3, a marine diesel emission reduction control method includes the following steps:
a signal generation step: the simulation station generates a simulation signal and sends the simulation signal to the central processing unit;
a first detection step: the soot blowing control system detects whether the soot blowing state meets the standard, if yes, the next step is executed, and if not, an alarm signal is sent to the central processing unit; in the first detection step, the soot blowing detection end sends detection values to a soot blowing feedback sensor, and the soot blowing feedback sensor sends detection signals to a central processing unit for analysis.
And a second detection step: the urea injection system detects whether the urea injection quantity meets the standard, if yes, the next step is executed, and if not, an alarm signal is sent to the central processing unit; in the second detection step, the urea injection assembly injects urea with a set value, the urea detection assembly detects an actual value of the urea and sends the actual value to the urea feedback sensor, and the urea feedback sensor sends a detection signal to the central processing unit for analysis.
And a third detection step: the afterburning control system detects whether the afterburning state meets the standard, if so, the next step is executed, and if not, an alarm signal is sent to the central processing unit; in the third detection step, if the afterburning control system sends out an alarm signal, the afterburning facility is immediately closed.
Fourth detection step: and the fan control system detects whether the fan state meets the standard, if so, the next step is executed, and if not, an alarm signal is sent to the central processing unit. In the fourth detection step, if the fan control system sends out an alarm signal, the fan is immediately turned off.
And an output step: ending the analog signal of the central processing unit, and sending a signal to the valve control system by the central processing unit.
The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention are intended to be within the scope of the present invention as claimed.
Claims (6)
1. The marine diesel emission reduction control system comprises a reactor, a venturi tube unit, a fan unit, an afterburning unit, a urea supply unit, a valve control system, a simulation table, an SCR control box and a central processing unit, wherein the reactor is respectively connected with the venturi tube unit and the valve control system, the SCR control box is respectively connected with the valve control system and the simulation table, the fan unit is respectively connected with the venturi tube unit and the valve control system, the urea supply unit is respectively connected with the afterburning unit and the valve control system, the central processing unit comprises a soot blowing control system for detecting a soot blowing state, a urea injection system, an afterburning control system for detecting an afterburning state and a fan control system for detecting a fan state, the urea injection system comprises a urea injection assembly for injecting urea, a urea detection assembly for detecting a urea injection amount and a urea feedback sensor, and the central processing unit judges whether the marine diesel emission reduction control system is normally or not according to signals transmitted by the soot blowing control system, the urea injection system and the afterburning control system and the fan control system;
the soot blowing control system comprises a soot blowing detection end for detecting a soot blowing state and a soot blowing feedback sensor for feeding back;
the SCR control box is in communication connection with the central processing unit;
the simulation platform comprises a manual controller and an automatic controller;
the emission reduction control method for the marine diesel engine is characterized by comprising the following steps of:
a signal generation step: the simulation station generates a simulation signal and sends the simulation signal to the central processing unit;
a first detection step: the soot blowing control system detects whether the soot blowing state meets the standard, if yes, the next step is executed, and if not, an alarm signal is sent to the central processing unit;
and a second detection step: the urea injection system detects whether the urea injection quantity meets the standard, if yes, the next step is executed, and if not, an alarm signal is sent to the central processing unit;
and a third detection step: the afterburning control system detects whether the afterburning state meets the standard, if so, the next step is executed, and if not, an alarm signal is sent to the central processing unit;
fourth detection step: and the fan control system detects whether the fan state meets the standard, if so, the next step is executed, and if not, an alarm signal is sent to the central processing unit.
2. The marine diesel emission reduction control method according to claim 1, wherein: in the first detection step, the soot blowing detection end sends detection values to a soot blowing feedback sensor, and the soot blowing feedback sensor sends detection signals to a central processing unit for analysis.
3. The marine diesel emission reduction control method according to claim 1, wherein: in the second detection step, the urea injection assembly injects urea with a set value, the urea detection assembly detects an actual value of the urea and sends the actual value to the urea feedback sensor, and the urea feedback sensor sends a detection signal to the central processing unit for analysis.
4. The marine diesel emission reduction control method according to claim 1, characterized in that the marine diesel emission reduction control method further comprises the output step of: ending the analog signal of the central processing unit, and sending a signal to the valve control system by the central processing unit.
5. The marine diesel emission reduction control method according to claim 2, wherein: in the third detection step, if the afterburning control system sends out an alarm signal, the afterburning facility is immediately closed.
6. The marine diesel emission reduction control method according to claim 2, wherein: in the fourth detection step, if the fan control system sends out an alarm signal, the fan is immediately turned off.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011306884.5A CN112727578B (en) | 2020-11-20 | 2020-11-20 | Marine diesel emission reduction control system and method |
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| CN202011306884.5A CN112727578B (en) | 2020-11-20 | 2020-11-20 | Marine diesel emission reduction control system and method |
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| CN112727578A CN112727578A (en) | 2021-04-30 |
| CN112727578B true CN112727578B (en) | 2023-12-22 |
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| CN112610310B (en) * | 2020-11-30 | 2023-04-11 | 沪东重机有限公司 | Large-scale marine diesel engine discharges aftertreatment system and simulation platform thereof |
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Effective date of registration: 20211012 Address after: 200129 No. 1333, Laiyang Road, Pudong New Area, Shanghai Applicant after: China Shipbuilding Power (Group) Co.,Ltd. Applicant after: HUDONG HEAVY MACHINERY Co.,Ltd. Address before: 200129 346, 2851 Pudong Avenue, Shanghai, Pudong New Area Applicant before: HUDONG HEAVY MACHINERY Co.,Ltd. |
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Effective date of registration: 20230629 Address after: 201208 No. 1333, Laiyang Road, Pudong New Area, Shanghai Applicant after: China Shipbuilding Power (Group) Co.,Ltd. Address before: 200129 No. 1333, Laiyang Road, Pudong New Area, Shanghai Applicant before: China Shipbuilding Power (Group) Co.,Ltd. Applicant before: HUDONG HEAVY MACHINERY Co.,Ltd. |
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