CN113153499A - Electrical control system and method for ship tail gas emission - Google Patents

Electrical control system and method for ship tail gas emission Download PDF

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Publication number
CN113153499A
CN113153499A CN202011306873.7A CN202011306873A CN113153499A CN 113153499 A CN113153499 A CN 113153499A CN 202011306873 A CN202011306873 A CN 202011306873A CN 113153499 A CN113153499 A CN 113153499A
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CN
China
Prior art keywords
tail gas
reactor
circulating fan
afterburning
supply unit
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Pending
Application number
CN202011306873.7A
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Chinese (zh)
Inventor
郭江峰
魏亮
孙新
杨新伟
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China Shipbuilding Power Group Co ltd
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Hudong Heavy Machinery Co Ltd
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Application filed by Hudong Heavy Machinery Co Ltd filed Critical Hudong Heavy Machinery Co Ltd
Priority to CN202011306873.7A priority Critical patent/CN113153499A/en
Publication of CN113153499A publication Critical patent/CN113153499A/en
Pending legal-status Critical Current

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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
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust 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
    • 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
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/14—Nitrogen oxides
    • 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
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/24—Hydrogen sulfide (H2S)
    • 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
    • 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
    • F01N2610/146—Control thereof, e.g. control of injectors or injection valves
    • 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
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/04—Methods of control or diagnosing
    • F01N2900/0408—Methods of control or diagnosing using a feed-back loop
    • 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
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06—Parameters used for exhaust control or diagnosing
    • F01N2900/14—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust gas
    • F01N2900/1404—Exhaust gas temperature
    • 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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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

The invention discloses an electrical control system for ship tail gas emission, which comprises a reactor for catalytic reaction, a urea supply unit, a afterburning system for providing afterburning heat, a circulating fan system for providing flow power, a valve system for opening and closing and a direct discharge channel, wherein the valve system comprises a plurality of switch valves, the reactor is respectively communicated with the urea supply unit, the circulating fan system and the direct discharge channel, and long-time reciprocating treatment in a tail gas or flue gas emission process is realized through the cooperation of the reactor for reaction, the urea supply unit, the afterburning system for providing afterburning heat, the circulating fan system for providing flow power, the valve system for opening and closing and the direct discharge channel, so that the emission quality of tail gas or flue gas can be ensured, and the problems of low emission efficiency and poor emission effect can be solved. The invention also discloses an electrical control method for ship tail gas emission.

Description

Electrical control system and method for ship tail gas emission
Technical Field
The invention relates to the field of ships, in particular to an electrical control system and method for ship tail gas emission.
Background
Currently, the third phase of emission regulations, as defined by the international maritime organization, has been implemented in emission control communities since 1 month 1 of 2016. As the best option at present, selective catalytic reduction is a good exhaust aftertreatment strategy for the treatment of nitrogen oxides produced by marine diesel engines. Wherein the nitrogen oxide reduction process is as follows: and injecting a proper amount of ammonia as a reducing agent into the discharged tail gas, mixing the ammonia gas and the exhaust gas, and then feeding the mixture into a reactor provided with a catalyst module, wherein the nitrogen oxide is reduced into nitrogen and water under the action of a catalyst. The selective catalytic reduction reaction is divided into a high pressure type and a low pressure type, wherein the LP-SCR is mainly characterized in that the temperature of the tail gas is lower than that of the HP-SCR after the reactor is arranged on a supercharger, and the catalytic reduction reaction cannot be met, so that related auxiliary equipment is required to be added to increase the temperature of the tail gas so as to meet the catalytic reduction reaction. In addition, the LP-SCR can generate hydrogen sulfide substances after operation, the system function is reduced, and how to remove the hydrogen sulfide substances is also one of the difficulties.
However, the existing ship exhaust emission has the following defects:
the problems of low emission efficiency and poor emission effect exist in the tail gas emission of ships in the market.
Disclosure of Invention
In order to overcome the defects of the prior art, an object of the present invention is to provide an electrical control system and method for ship exhaust emission, which can solve the problems of low emission efficiency and poor emission effect.
One of the purposes of the invention is realized by adopting the following technical scheme:
an electrical control system for ship tail gas emission comprises a reactor for catalytic reaction, a urea supply unit, an after-combustion system for providing after-combustion heat, a circulating fan system for providing flowing power, a valve system for opening and closing and a direct discharge channel, wherein the valve system comprises a plurality of on-off valves; the afterburning system is respectively communicated with the urea supply unit and the circulating fan system, and switching valves are respectively arranged on communication pipelines of the afterburning system and the urea supply unit and the circulating fan system.
Further, the urea supply unit comprises a reducing agent metering unit and a reducing agent pump station communicated with the reducing agent metering unit.
An electrical control method for ship tail gas emission comprises the following steps:
direct discharging: the tail gas of the ship is discharged along the direct exhaust channel, whether the tail gas needs to be treated is detected, and if yes, the next step is executed;
preheating: the afterburning system operates and provides heat for the circulating fan system, the circulating fan system operates to generate hot air and flows into the reactor for preheating, whether the temperature reaches a preset temperature is detected, and if yes, the next step is executed;
and (3) tail gas treatment: the urea supply unit provides urea according to a preset value, the urea enters the reactor, and tail gas is discharged into the reactor for treatment.
Further, in the tail gas treatment step, whether the catalyst in the reactor is invalid or not is detected, and if yes, a signal is sent to a central processing unit.
Further, the electrical control method for ship exhaust emission also comprises the step of removing hydrogen sulfide: the tail gas is discharged along the direct discharging channel, the afterburning system increases the operation temperature and provides heat for the circulating fan system, and the circulating fan system operates to generate high-temperature hot air and flows into the reactor to react so as to remove hydrogen sulfide.
Further, in the hydrogen sulfide removing step, whether the catalyst meets the requirement is detected, and if so, a signal is sent to a central processing unit.
Further, the electrical control method for ship exhaust emission further comprises the following steps: and (4) closing the afterburning system, and enabling the circulating fan system to operate to generate cold air and flow into the reactor for cooling.
Further, the electrical control method for ship exhaust emission further comprises the following temperature detection steps:
and detecting whether the temperature meets the requirement, if so, modifying the exhaust path of the tail gas into a reactor, and processing again.
Further, the electrical control method for ship exhaust emission further comprises a standard detection step, wherein whether the exhaust meets the emission standard or not is detected, and if yes, the exhaust is discharged.
Compared with the prior art, the invention has the beneficial effects that:
the long-time reciprocating treatment in the exhaust or flue gas emission process is realized through the matching of the reaction reactor, the urea supply unit, the afterburning system for providing afterburning heat, the circulating fan system for providing flowing power, the valve system for opening and closing and the straight-line channel, so that the exhaust quality of the exhaust or flue gas can be guaranteed, and the problems of low exhaust efficiency and poor exhaust effect can be solved.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a block diagram of an electrical control system for exhaust emission of a ship according to a preferred embodiment of the present invention;
FIG. 2 is another block diagram of the electrical control system for the exhaust emission of the ship shown in FIG. 1;
fig. 3 is a flow chart of the electrical control system for ship exhaust emission.
In the figure: 1. a reactor; 2. a urea supply unit; 3. a post-combustion system; 4. a circulating fan system; 5. a valve system.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are 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 in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1-2, an electrical control system for ship exhaust emission comprises a reactor 1 for catalytic reaction, a urea supply unit 2, an afterburning system 3 for providing afterburning heat, a circulating fan system 4 for providing flow power, a valve system 5 for opening and closing, and a direct exhaust passage, wherein the valve system 5 comprises a plurality of on-off valves, the reactor 1 is respectively communicated with the urea supply unit 2, the circulating fan system 4, and the direct exhaust passage, and the reactor 1 is respectively provided with an on-off valve in a communication pipeline with the urea supply unit 2, the circulating fan system 4, and the direct exhaust passage; the afterburning system 3 is respectively communicated with the urea supply unit 2 and the circulating fan system 4, and the afterburning system 3 is respectively provided with a switch valve on a communication pipeline with the urea supply unit 2 and the circulating fan system 4. The urea supply unit 2 comprises a reducing agent metering unit and a reducing agent pump station communicated with the reducing agent metering unit. Novel structure, design benefit, the suitability is strong, the facilitate promotion.
Specifically, the valve system 5 comprises an RBV, an RSV, an RTV and a CRV, the ship exhaust emission electrical control system further comprises a remote touch screen, an LP-SCR control box providing interfaces such as operation, control, monitoring and data storage for remote control, has the functions of instruction output and equipment signal feedback acquisition and is connected with a main structure of the LP-SCR and a control system of a host. .
Referring to fig. 3, an electrical control method for ship exhaust emission includes the following steps:
direct discharging: the tail gas of the ship is discharged along the direct exhaust channel, whether the tail gas needs to be treated is detected, and if yes, the next step is executed; specifically, the ship works outside the emission control area, the flue gas of the main engine is directly discharged without passing through the reactor, at the moment, the RBV is opened, and other systems are all in a closed state.
Preheating: the afterburning system operates and provides heat for the circulating fan system, the circulating fan system operates to generate hot air and flows into the reactor for preheating, whether the temperature reaches a preset temperature is detected, and if yes, the next step is executed; specifically, preparation work of a ship before the ship enters an emission control area aims to enable smoke to reach LP-SCR working temperature as soon as possible, at the moment, one part of the smoke is directly discharged, the other part of the smoke passes through a reactor, meanwhile, a circulating fan system and an after-burning system work to improve the smoke temperature, at the moment, RBV, RSV and RTV are fully opened, the circulating fan system is started, and a CRV and the after-burning system are automatically adjusted according to a set target temperature through a PID controller.
And (3) tail gas treatment: the urea supply unit provides urea according to a preset value, the urea enters the reactor, and tail gas is discharged into the reactor for treatment. In the tail gas treatment step, whether a catalyst in the reactor is invalid or not is detected, and if yes, a signal is sent to a central processing unit. Specifically, at the moment, the smoke temperature meets the working requirement of LP-SCR, the smoke passes through the reactor completely, the urea supply unit starts to work, the circulating fan system and the afterburning system work to improve the smoke temperature, at the moment, the RBV is closed, and the RSV and the RTV are opened. The CRV and the afterburning system are automatically adjusted according to the PID controller and the set target temperature, and the urea supply quantity is automatically adjusted according to the PID controller and the set target value. Specifically, the CBV is automatically adjusted according to a PID adjustment method to set a target temperature as a target amount of the PID controller, a real-time temperature as a feedback amount of the PID controller, and an output amount of the PID controller as an input amount of the opening of the CBV valve, thereby controlling the opening of the CBV valve. The fuel consumption of the afterburner is automatically adjusted according to a PID adjusting method, the set target temperature is the target quantity of a PID controller, the real-time temperature is the feedback quantity of the PID controller, and the output quantity of the PID controller is the input quantity of the opening degree of an oil way adjusting valve of the afterburner, so that the fuel consumption of the afterburner is controlled. The PID control method for the urea injection quantity of the urea supply unit automatically adjusts the target urea injection quantity to be the target quantity of the PID controller, the real-time injection quantity to be the feedback quantity of the PID controller, and the output quantity of the PID controller to be the input quantity of the opening degree of the urea supply circuit regulating valve of the urea supply unit, so that the urea injection quantity is controlled.
Hydrogen sulfide removal: the tail gas is discharged along the direct discharging channel, the afterburning system increases the operation temperature and provides heat for the circulating fan system, and the circulating fan system operates to generate high-temperature hot air and flows into the reactor to react so as to remove hydrogen sulfide. In the hydrogen sulfide removing step, whether the catalyst meets the requirement is detected, and if so, a signal is sent to a central processing unit.
Cooling: and (4) closing the afterburning system, and enabling the circulating fan system to operate to generate cold air and flow into the reactor for cooling.
Preferably, the electrical control method for ship exhaust emission further comprises a temperature detection step: and detecting whether the temperature meets the requirement, if so, modifying the exhaust path of the tail gas into a reactor, and processing again.
And a standard detection step, detecting whether the tail gas meets the emission standard, and if so, discharging. The long-time reciprocating treatment in the exhaust or flue gas emission process is realized through the matching of the reaction reactor, the urea supply unit, the afterburning system for providing afterburning heat, the circulating fan system for providing flowing power, the valve system for opening and closing and the straight-line channel, so that the exhaust quality of the exhaust or flue gas can be guaranteed, and the problems of low exhaust efficiency and poor exhaust effect can be solved.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims (9)

1. The utility model provides a boats and ships exhaust-gas emission electrical control system which characterized in that: the system comprises a reactor for catalytic reaction, a urea supply unit, a afterburning system for providing afterburning heat, a circulating fan system for providing flow power, a valve system for opening and closing and a direct discharge channel, wherein the valve system comprises a plurality of opening and closing valves;
the afterburning system is respectively communicated with the urea supply unit and the circulating fan system, and switching valves are respectively arranged on communication pipelines of the afterburning system and the urea supply unit and the circulating fan system.
2. The electrical marine exhaust emission control system of claim 1, wherein: the urea supply unit comprises a reducing agent metering unit and a reducing agent pump station communicated with the reducing agent metering unit.
3. An electrical control method for ship exhaust emission, applied to the electrical control system for ship exhaust emission according to any one of claims 1-2, is characterized by comprising the following steps:
direct discharging: the tail gas of the ship is discharged along the direct exhaust channel, whether the tail gas needs to be treated is detected, and if yes, the next step is executed;
preheating: the afterburning system operates and provides heat for the circulating fan system, the circulating fan system operates to generate hot air and flows into the reactor for preheating, whether the temperature reaches a preset temperature is detected, and if yes, the next step is executed;
and (3) tail gas treatment: the urea supply unit provides urea according to a preset value, the urea enters the reactor, and tail gas is discharged into the reactor for treatment.
4. The electrical marine exhaust emission control method according to claim 3, wherein: in the tail gas treatment step, whether a catalyst in the reactor is invalid or not is detected, and if yes, a signal is sent to a central processing unit.
5. The electrical marine exhaust emission control method according to claim 4, further comprising a hydrogen sulfide removal step of:
the tail gas is discharged along the direct discharging channel, the afterburning system increases the operation temperature and provides heat for the circulating fan system, and the circulating fan system operates to generate high-temperature hot air and flows into the reactor to react so as to remove hydrogen sulfide.
6. The electrical marine exhaust emission control method according to claim 5, wherein: in the hydrogen sulfide removing step, whether the catalyst meets the requirement is detected, and if so, a signal is sent to a central processing unit.
7. The electrical marine exhaust emission control method according to claim 6, further comprising a cooling step of: and (4) closing the afterburning system, and enabling the circulating fan system to operate to generate cold air and flow into the reactor for cooling.
8. The electrical marine exhaust emission control method according to claim 7, wherein: the electrical control method for ship tail gas emission further comprises the following temperature detection steps:
and detecting whether the temperature meets the requirement, if so, modifying the exhaust path of the tail gas into a reactor, and processing again.
9. The electrical marine exhaust emission control method according to claim 8, further comprising a standard detection step of detecting whether the exhaust gas meets an emission standard, and if so, discharging the exhaust gas.
CN202011306873.7A 2020-11-20 2020-11-20 Electrical control system and method for ship tail gas emission Pending CN113153499A (en)

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN113638792A (en) * 2021-08-31 2021-11-12 沪东重机有限公司 LP-SCR (Low-Voltage Selective catalytic reduction) electrical control and security system for diesel engine exhaust emission and working method thereof

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CN109847582A (en) * 2019-01-31 2019-06-07 沪东重机有限公司 Ship low pressure SCR system and its working method suitable for low-temperature SCR catalyst
CN209952601U (en) * 2019-01-31 2020-01-17 沪东重机有限公司 Ship low-pressure SCR system suitable for low-temperature SCR catalyst
KR102055312B1 (en) * 2019-09-02 2019-12-12 부경대학교 산학협력단 System for treating exhaust gas of large ship
CN211343076U (en) * 2019-10-29 2020-08-25 中船动力研究院有限公司 Low-pressure selective catalytic reduction system and control device thereof
CN214533160U (en) * 2020-11-20 2021-10-29 中船动力(集团)有限公司 Electrical control system for ship tail gas emission

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113638792A (en) * 2021-08-31 2021-11-12 沪东重机有限公司 LP-SCR (Low-Voltage Selective catalytic reduction) electrical control and security system for diesel engine exhaust emission and working method thereof

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