KR20170053979A - Power plant system for a ship - Google Patents

Abstract

The present invention relates to a power system for a ship, comprising: an engine to propel a hull; a harmful substance purifying device to purify harmful substances; and a reducing agent supply amount control device. The present invention aims to guide an effective breakaway with respect to an environmental pollution problem caused by harmful substances discharged from an engine, as well as a problem caused by an increase in fuel by an excessive consumption of fuel on the engine side, without additional difficulties on the side of an operating agent (e.g. a ship body operating agent, a harmful material reducing device operating agent, etc.).

Description

{Power plant system for a ship}

The present invention relates to a marine power system, and more particularly, to a marine power system for a marine vessel, which comprises a hull operation controller for operating a hull, When the hull is located in the OECA (Ordinary Emission Control Area of a harmful material) under the communication infrastructure of the harmful substance abatement equipment controller, etc., it communicates with the harmful substance purification equipment, A computation module capable of controlling the capacity of the reducing agent supplied to the SCR reactor to a preset OECA capacity in a state in which the hull is in a state of being operated with an Extraordinary Emission Control Area (EECA) harmful material, the control unit communicates with the harmful-substance-purifying device, and when the harmful-material purifying device is operated, the SCR- And a computer module capable of controlling the capacity of the reducing agent supplied by the EECA capacity set in advance, and the like, thereby providing the fuel economy optimization setting action In other words, the harmful substances that are self-discharged are consumed only by the minimum amount of fuel through the setting measures focused on the issue of improving the fuel efficiency of the engine itself rather than the issue of small amount of harmful substances. (For example, hull operators, hazardous substance abatement equipment operators, etc.) can be cleaned appropriately by a reducing agent that is optimally provided by the use of a reducing agent that is suitable for the Tier II and Tier III regulations. , Environmental pollution problems caused by harmful substances emitted from the engine, as well as fuel costs due to excessive fuel consumption on the engine side It relates to a power system for ships that can guide you so that you can effectively break even problem.

In recent years, regulations on harmful substances emitted from vessels such as nitrogen oxides (NO _x ) have been strengthened. (For reference, in Tier III, which takes effect in 2016, the emission of nitrogen oxides is 3.4 g / KW or less ), Various kinds of harmful material abatement devices for marine use have been widely developed / distributed using technologies such as SCR (Selective Catalyst Reduction).

For example, Korean Patent Laid-Open No. 10-2010-132310 (titled SCR system for ship using urea powder and nitrogen oxide reduction method) (Published Dec. 17, 2010), Korean Patent Laid-Open No. 10-2003-127737 Title: Apparatus for preventing clogging of SCR apparatus using waste heat of ship) Korean Patent Laid-Open No. 10-2014-46651 (Name: Degeneration apparatus of large-sized engines for ships) (2014.4.21. ) Discloses in more detail the detailed structure of a harmful substance abatement device for a ship according to such a conventional technique.

1, a marine power system according to the prior art includes an engine 11 for propelling a hull 30 (shown in FIGS. 2 and 3) And harmful substance abatement devices 10 for reducing the harmful substances contained in the exhaust gas are systematically combined.

Reduction in this case, the harmful substances device 10, for example, nitrogen oxide reduction device is an exhaust gas flow line 12 and, hazardous materials drawn out from the engine 11 side, for example, nitrogen oxides (NO _x) A reducing agent storage tank 21 for storing a reducing agent (e.g., urea) for the reducing agent storage tank 21 and a reducing agent storage tank 21 connected to the reducing agent storage tank 21, , A compressed air supplier 22 for supplying compressed air to the reductant injector 20 so as to smoothly perform a series of reducing agent injection functions, a sensor 19 A controller 23 for controlling the compressed air supply valve 24 on the basis of the measured value output from the reducing agent sprayer 20 and regulating the amount of the reducing agent sprayed by the reducing agent sprayer 20, And the exhaust gas and the reducing agent together To, the SCR reactor (13) for purifying the harmful substances contained in exhaust gas (e.g., nitrogen oxide (NO _x)) is taken to configure the systematic combination.

At this time, the SCR reactor 13 is a SCR catalyst that reacts nitrogen oxides (NO _x ) with a reducing agent while simultaneously passing exhaust gas and a reducing agent, and reduces the nitrogen oxides (NO _x ) (18) and an SCR chamber (17) for accommodating the SCR catalyst (18).

Under such a conventional system, as shown in FIG. 2, when the hull 30 enters, for example, an Ordinary Emission Control Area of a harmful material (OECA) subject to Tier II regulation, The state of the engine 11 is set to a state of discharging a small amount of harmful substances while the operation of the harmful material abatement device 10 is stopped on the side of the operating entity (for example, the hull operating entity, the operating entity of the harmful material abatement device, etc.) The amount of harmful substances discharged from the engine 11 is guided to satisfy the Tier II regulation.

3, when the hull 30 enters, for example, an Extraordinary Emission Control Area of a harmful material (EECA) subject to Tier III regulation, The harmful material abatement device 10 can be operated not only by setting the state of the engine 11 to a small amount of emission of harmful substances but also by operating a sieve body operated up to the harmful material abatement device 10, 11) to meet the requirements of Tier III, which is more severe than Tier II.

However, in setting the state of the engine 11 under the environment of OECA, EECA, etc., on the side of the operating entity (for example, the hull operating entity, the harmful substance abatement device operating entity, etc.) Since the focus is placed on the issue of a small amount of harmful substances emitted rather than the fuel efficiency performance of the engine 11 itself, it is possible to reduce the fuel consumption of the engine 11 considerably Inevitably, serious damage, which consumes a large amount of expensive fuel, can not be avoided.

Korean Patent Laid-Open No. 10-2010-132310 (name: SCR system for ship using urea powder and nitrogen oxides abatement method) (Dec. 17, 2010) Korean Patent Laid-Open No. 10-2003-127737 (Name: Apparatus for preventing clogging of SCR apparatus using waste heat of a ship) Korean Patent Laid-Open No. 10-2014-46651 (Name: Denitration Apparatus for Large Marine Engines) (Published on April 21, 2014)

Accordingly, an object of the present invention is to provide a hull operation controller, a harmful substance abatement device-side controller, and the like which are responsible for the operation of the hull, taking the steps of setting the state of the engine in advance, (1), when the hull is located in an Ordinary Emission Control Area of a harmful material (OECA) under the communication infrastructure of the hazardous material purifying device A computation module capable of controlling the capacity of the reducing agent supplied to the SCR reactor by the predetermined capacity for OECA, and <the case where the hull is located in the Extraordinary Emission Control Area of a harmful material (EECA) , Communicating with the harmful material purifying device to set the capacity of the reducing agent supplied to the SCR reactor in a state in which the harmful material purifying device is operated And a computer module capable of controlling the capacity of the EECA for which the engine has been installed, and the like. In this way, at the engine side under the environment of OECA, EECA, etc., the fuel economy optimization setting action , Which is focused on the issue of improving the fuel efficiency of the engine itself rather than the issue of reducing the fuel consumption of the engine itself, while consuming only a minimal amount of fuel, self-emitted toxic substances, OECA capacity, EECA capacity, etc., (Hull Operators, Harmful Substance Abuse Reduction Equipment Operator, etc.), without any difficulties, by making it possible to appropriately purify the harmful substances emitted from the engine in accordance with the Tier II regulations and the Tier III regulations. In addition to the problems of environmental pollution caused by the fuel cost increase due to engine-side fuel consumption, So it is to guide.

Other objects of the present invention will become more apparent from the following detailed description and the accompanying drawings.

In order to accomplish the above object, the present invention provides an air-fuel ratio control system comprising: an engine for propelling a hull; A harmful substance purifying device for purifying harmful substances contained in the exhaust gas discharged from the engine in a state having a selective catalytic reduction (SCR) reactor; (EN) In case that the hull is located in an Ordinary Emission Control Area of a harmful material (OECA), the Harmful Substance Cleaner is communicated with the Harmful Substance Purifying Device, The amount of the reducing agent to be supplied is controlled to a predetermined capacity for OECA, and when the hull is located in an EECA (Extraordinary Emission Control Area of a harmful material) And a reducing agent supply capacity control device for controlling the capacity of the reducing agent supplied to the SCR reactor to a predetermined capacity for EECA in a state in which the harmful substance purifying device is operated, .

In the present invention, it is necessary to take measures such as &quot; setting the state of the engine in advance to a fuel efficiency optimized state instead of discharging a small amount of harmful substances &quot;, and also to control the operation of the hull, under the communication infrastructure of the hull operation controller and the harmful material abatement device- When the hull is located in the OECA, it is possible to control the capacity of the reducing agent supplied to the SCR reactor to the preset OECA capacity while communicating with the harmful substance purifying device and operating the hazardous material purifying device When the hull is located in the EECA, it communicates with the harmful substance purifying device, and when the hazardous substance purifying device is operated, the capacity of the reducing agent supplied to the SCR reactor is set to the predetermined capacity for EECA And an electronic engine that is placed in an environment such as OECA, EECA, etc. under the implementation environment of the present invention, , It is possible to reduce the fuel consumption by minimizing the amount of fuel consumed only by consuming a minimum amount of fuel through the fuel efficiency optimization setting action (that is, a setting action focused on the issue of improving the fuel efficiency of the engine itself rather than an issue of a small amount of emission of harmful substances) The material can be appropriately purified to the level of Tier II regulation and Tier III regulation by the reducing agent optimally provided for OECA capacity and EECA capacity. Eventually, the substance will be managed by the operator (eg, hull operator, It is possible to effectively eliminate the problem of environmental pollution caused by harmful substances discharged from the engine and the problem of increase in fuel cost due to excessive fuel consumption on the engine side.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exemplary diagram conceptually showing a marine power system according to the prior art; Fig.
FIG. 2 is an exemplary view conceptually showing a ship entering a OECA according to a conventional technique; FIG.
Fig. 3 is an exemplary view conceptually showing a ship entering a EECA according to a conventional technique; Fig.
4 is an exemplary view conceptually showing a marine power system according to the present invention.
FIG. 5 is an exemplary view conceptually showing a ship adopting the present invention entering the OECA. FIG.
FIG. 6 is an exemplary view conceptually showing a ship adopting the present invention entering the EECA; FIG.
FIG. 7 is an exemplary view conceptually showing a detailed configuration of a reducing agent supply capacity control device according to the present invention; FIG.

Hereinafter, a ship power system according to the present invention will be described in detail with reference to the accompanying drawings.

4, the marine power system according to the present invention includes an engine 111 for propelling the hull 130 (shown in Figs. 5 and 6), and an engine 111 for propelling the exhaust gas from the engine 111 And the harmful substance abatement apparatuses 100 for reducing the harmful substances contained therein are systematically combined.

Reduction in this case, the harmful substances device 100, e.g., a nitrogen oxide reduction device is an exhaust gas flow line 112 and, hazardous materials drawn out from the engine 111 side, for example, nitrogen oxides (NO _x) A reducing agent storage tank 121 for storing a reducing agent (e.g., urea) for the reducing agent storage tank 121 and a reducing agent storage tank 121 connected to the reducing agent storage tank 121, A compressed air supply 122 for supplying compressed air to the reductant injector 120 so as to smoothly perform a series of reducing agent injection functions, A controller 123 for controlling the compressed air supply valve 124 on the basis of the measured value output from the exhaust gas circulation line 112 and regulating the amount of the reducing agent injected by the reducing agent injector 120, The exhaust gas and the reducing agent And the SCR reactor 113 for purifying the harmful substances contained in the exhaust gas (for example, nitrogen oxides (NO _x )) are passed through together to be structured in a systematic combination.

At this time, the SCR reactor 113 is a SCR catalyst that reacts nitrogen oxides (NO _x ) with a reducing agent while simultaneously passing exhaust gas and a reducing agent, and reduces the nitrogen oxides (NO _x ) And a SCR chamber 117 for accommodating the SCR catalyst 118 are combined.

On the other hand, under the system of the present invention, on the ship side, as shown in Fig. 5, it is possible to navigate the OECA under the Tier II regulation or to navigate the EECA under the Tier III regulation as shown in Fig. 6 .

Of course, under such OECA and EECA voyage situations, when the operator sets the engine 111 on the issue of a small amount of harmful substances rather than the fuel efficiency performance on the side of the operator as in the prior art, 111) fuel economy is greatly reduced. In the end, serious damage such as a large amount of expensive fuel is inevitable.

In this sensitive situation, in the present invention, it is necessary to set the state of the engine 111 in advance to a fuel efficiency optimized state rather than a state of discharging a small amount of harmful substances (i.e., A hull operation controller 300 for operating the hull 130, a controller 123 for the harmful material abatement device 100, and a controller for controlling the operation of the hull 130, ) And the like, a measure is taken to additionally provide the reducing agent supply capacity control device 200 inherent to the present invention.

In this case, on the side of the reductant supply capacity control device 200 of the present invention, when the hull 130 is located at the OECA, it communicates with the toxic substance purifying device 100 and operates in a state in which the hazardous substance purifying device 100 is operated , The capacity of the reductant supplied to the SCR reactor 113 is controlled to a preset OECA capacity (that is, a capacity capable of purifying harmful substances discharged from the engine 111 side to a level suitable for the Tier II regulation) When the hull 130 is located in the EECA, the hazardous substance purifying apparatus 100 is communicated with the hazardous material purifying apparatus 100 so that the reducing agent supplied to the SCR reactor 113, (That is, a capacity for purifying harmful substances discharged from the engine 111 side to a level suitable for the Tier III regulation), and the like.

7, the reducing agent supply capacity control device 200 according to the present invention includes a hull operation controller 300 for operating the hull 130 via the interface module 201, An OECA hull entrance check module 203, an OECA reductant supply processing module 204, an EECA hull entry check module (hereinafter, referred to as an EECA hull entry check module) 203, which communicates with the controller 123 side of the material abatement machine 100, 205, a reducing agent supply processing module 206 for EECA, a hull OECA advancement status processing module 207, a hull EECA advance status processing module 208, and the like are systematically combined.

In this case, the operation information storage module 202 may store various operation information required for the reducing agent supply capacity control procedure, such as the registration information of the hull operation controller 300, the controller of the harmful substance abatement device 100 123, the component information necessary for establishing / maintaining the communication session, and the program information necessary for the process progress of the respective computation modules, and so on, so that the reductant supply capacity control procedure according to the present invention can be normally performed without any problem And support roles.

Under such circumstances, the OECA hull entry check module 203 communicates with the hull operation controller 300 to check whether the hull 130 has entered the OECA.

5, when it is judged that the hull 130 has entered the OECA under the regulation of the Tier II, the reducing agent supply processing module 204 for OECA immediately starts the operation of the hazardous material abatement device 100 side And communicates with the controller 123 to operate the toxic substance purification apparatus 100 and to control the capacity of the reducing agent supplied to the SCR reactor 113 from the predetermined capacity for OECA The capacity to purify harmful substances emitted to the level of Tier II regulation).

Of course, under this situation, on the engine 111 side, at least, through the fuel economy optimization setting action (i.e., a setting action focused on the issue of improving the fuel economy performance of the engine itself rather than an issue of a small amount of emission of toxic substances) The toxicity of self-emitted toxic substances can be appropriately cleaned up to a level suitable for Tier II regulation by a reducing agent optimally provided for OECA capacity.

On the other hand, the EECA hull entry check module 205 operating in conjunction with the preceding computation modules communicates with the hull operation controller 300 to check whether the hull 130 has entered the EECA.

6, when it is judged that the hull 130 has entered the EECA under the restriction of the Tier III, the reducing agent supply processing module 206 for EECA immediately starts to operate the harmful substance abatement device 100 side The ECU 123 communicates with the controller 123 to operate the toxic substance purification apparatus 100 and to control the capacity of the reducing agent supplied to the SCR reactor 113 from the previously set EECA capacity The capacity to purify the harmful substances emitted to the level of Tier III regulation).

Of course, under this situation, on the engine 111 side, at least, through the fuel economy optimization setting action (i.e., a setting action focused on the issue of improving the fuel economy performance of the engine itself rather than an issue of a small amount of emission of toxic substances) The toxic substances that are self-discharged can be appropriately purified to a level suitable for the Tier III regulation by the reducing agent that is optimally provided for the capacity for EECA.

As described above, in the present invention, the hull operation controller 300, which is responsible for the operation of the hull 130, takes the action of setting the state of the engine 111 in advance, , And the controller 123 of the harmful substance abatement device 100, etc., when the hull 130 is located at the OECA, the harmful substance purifying device 100 communicates with the harmful substance purifying device 100, A computation module capable of controlling the capacity of the reducing agent supplied to the SCR reactor 113 to a predetermined OECA capacity while the hull 130 is moved to the EECA when the hull 130 is moved into the EECA; A computer module capable of controlling the capacity of the reducing agent supplied to the SCR reactor 113 to a preset EECA capacity while communicating with the purifier 100 and operating the toxic substance purifying device 100, > And so on. , The engine 111 placed under the environment of the OECA, EECA, etc. under the environment of the present invention can perform the fuel economy optimization setting action (that is, the issue of improving the fuel efficiency of the engine itself rather than the issue of a small amount of emission of the harmful substances) The harmful substances that are self-exhausting will be appropriately cleaned up to the level of Tier II regulation and Tier III regulation by the reducing agent optimally provided for OECA capacity, EECA capacity etc. The engine 111 is not only affected by the environmental pollution caused by the harmful substances emitted from the engine 111 but also by the operation of the operating subject (for example, the hull operator, the operator of the harmful substance abatement device, etc.) It is possible to effectively eliminate the problem of increase in fuel cost due to excessive fuel consumption.

As shown in FIG. 7, under the computational infrastructure of the reducing agent supply capacity control device 200 according to the present invention, in addition to the above-described respective computation modules, a hull OECA entry status processing module 207, a hull EECA entry status Processing module 208 and the like are further disposed.

At this time, the OECA advancement status module 207 of the hull OECA advances the capacity for the OECA to which the capacity of the reducing agent supplied to the SCR reactor 113 has been set (i.e., the level of harmful substances discharged from the engine 111 side , It is determined whether or not the hull 130 is out of the OECA by communicating with the hull operation controller 300 (see FIG. 5).

When it is determined that the hull 130 is out of the OECA, the hull OECA advancement status processing module 207 immediately communicates with the controller 123 of the harmful material purifier 100, (100) and to stop the supply of the reducing agent. sure. Under these measures, the operator can easily enjoy the effect of cutting off unnecessary reductant consumption.

On the other hand, at the side of the hull EECA advancement situation processing module 208 that operates in conjunction with the preceding computation modules, the capacity of the reductant supplied to the SCR reactor 113 is set to the EECA capacity (that is, A process of determining whether or not the hull 130 is out of the EECA by communicating with the hull operation controller 300 in a phase where the hull 130 is controlled to a level that allows the harmful substances to be discharged to be purified to a level conforming to the Tier III regulation) (See Fig. 6).

If it is determined that the hull 130 is out of the EECA, the hull EECA advancement status processing module 208 immediately communicates with the controller 123 of the harmful material purifier 100, (100) and to stop the supply of the reducing agent. sure. Even under such a measure, the operator can easily enjoy the effect of cutting off unnecessary reductant consumption.

The present invention exhibits a generally useful effect in various fields where purification of harmful substances is required.

Although specific embodiments of the present invention have been described and illustrated above, it is to be understood that the present invention may be embodied in many other specific forms without departing from the spirit or essential characteristics thereof.

Such modified embodiments should not be understood individually from the technical idea and viewpoint of the present invention, and such modified embodiments should be included in the appended claims of the present invention.

100: Hazardous substance abatement equipment
111: engine
130: Hull
200: Reducing agent supply capacity control device
201: Interface module
202: Operational information storage module
203: OECA hull entry check module
204: Reducing agent supply processing module for OECA
205: EECA hull entry check module
206: Reducing agent supply processing module for EECA
207: Hull OECA Entry Status Processing Module
208: Hull EECA Entry Status Processing Module
300: Hull operation controller

Claims (3)

An engine for propelling the hull, with the fuel efficiency optimized;
A harmful substance purifying device for purifying harmful substances contained in the exhaust gas discharged from the engine in a state having a selective catalytic reduction (SCR) reactor;
(EN) In case that the hull is located in an Ordinary Emission Control Area of a harmful material (OECA), the Harmful Substance Cleaner is communicated with the Harmful Substance Purifying Device, The amount of the reducing agent to be supplied is controlled to a predetermined capacity for OECA, and when the hull is located in an EECA (Extraordinary Emission Control Area of a harmful material) And a reducing agent supply capacity control device for controlling the capacity of the reducing agent supplied to the SCR reactor to a predetermined capacity for EECA in a state in which the harmful substance purifying device is operated, . The apparatus according to claim 1, wherein the reducing agent supply capacity control device determines whether or not the hull is out of the OECA, and when the hull is determined to be out of the OECA, communicates with the harmful material purification device, And a hull OECA advancement status processing module for stopping the operation of the material purification apparatus and the supply of the reducing agent. The reductant supply capacity control device according to claim 1, wherein the reductant supply capacity control device determines whether the hull is out of the EECA, and when the hull is determined to be out of the EECA, communicates with the harmful material purification device, Further comprising a hull EECA entry status processing module for stopping the operation of the material purifying device and the supply of the reducing agent.

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