WO2011065664A2 - Apparatus for reducing vocs in an oil carrying vessel - Google Patents

Apparatus for reducing vocs in an oil carrying vessel Download PDF

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Publication number
WO2011065664A2
WO2011065664A2 PCT/KR2010/006858 KR2010006858W WO2011065664A2 WO 2011065664 A2 WO2011065664 A2 WO 2011065664A2 KR 2010006858 W KR2010006858 W KR 2010006858W WO 2011065664 A2 WO2011065664 A2 WO 2011065664A2
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WIPO (PCT)
Prior art keywords
pressure
tank
eductor
voc
fluid
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PCT/KR2010/006858
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French (fr)
Korean (ko)
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WO2011065664A3 (en
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주광일
지태호
나일도
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탱크테크 주식회사
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Priority to CN201080053962.3A priority Critical patent/CN102665856B/en
Publication of WO2011065664A2 publication Critical patent/WO2011065664A2/en
Publication of WO2011065664A3 publication Critical patent/WO2011065664A3/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/12—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with streamlined valve member around which the fluid flows when the valve is opened
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/708—Volatile organic compounds V.O.C.'s
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/45—Gas separation or purification devices adapted for specific applications
    • B01D2259/4566—Gas separation or purification devices adapted for specific applications for use in transportation means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Definitions

  • the present invention relates to a device for reducing VOCs in ships, and more particularly, to a device for reducing VOCs in ships that can be prevented from marine pollution by reducing VOCs generated from liquid cargoes in oil carriers.
  • Nitrogen Oxide (NOx) Nitrogen Oxide
  • VOC Volatile Organic Compounds
  • the VOC generated in the ship acts as a marine pollutant.
  • the present invention was created in view of the above-described problems in the prior art, and the VOC generation amount is controlled by controlling the temperature and pressure in consideration of the fact that the VOC generated in the ship is released as the pressure rises inside the tank.
  • the main challenge is to provide an onboard VOC abatement system that can reduce marine pollution and prevent international pollution and respond to international regulations.
  • the present invention as a means for achieving the above object, in the apparatus for reducing the VOC generated in the tank in the ship;
  • An eductor installed on a pipeline of fluid transferred to the tank by a pump to transfer the pumped fluid to the tank, the eductor being installed to suction and discharge an inert gas for adjusting oxygen concentration;
  • a pressure regulating valve installed between the discharge side of the eductor and the tank to supply the tank while maintaining a constant pressure of the fluid discharged through the eductor at the VOC condensation pressure.
  • the rear end of the discharge side of the pressure control valve is also characterized in that the VOC generated by being connected to the base of the tank is always introduced to the base of the tank first.
  • the pressure control valve is characterized in that the trim portion having a plurality of holes is further provided to prevent the cavitation (cavitation) generated when the pressure difference between the front end and the rear end is large.
  • a pressure measuring sensor is further installed at the front end of the pressure regulating valve, the pressure measuring sensor is connected to the controller, and the controller adjusts the opening degree of the pressure regulating valve to adjust the pressure at the front end (pressure at the rear end of the eductor). It is also characteristic that it is always maintained above the VOC condensation pressure.
  • the present invention it is possible to suppress the generation of VOC in the ship, thereby preventing marine pollution, eliminating the health hazards of the crew inhabiting the ship, and actively responding to the increasingly tightened international regulations, thereby securing competitiveness.
  • the effect can be obtained.
  • the loss of cargo from VOC emissions can be reduced, so economic benefits are generated.
  • FIG. 1 is a structural diagram of the tank piping in the vessel for explaining the apparatus according to the present invention
  • Figure 2 is an exemplary cross-sectional view of the eductor applied to the present invention
  • Figure 3 is a sectional view showing the main structure of the pressure control valve applied to the present invention.
  • FIG. 1 is a structural view of the tank piping in the vessel for explaining the apparatus according to the present invention
  • Figure 2 is an exemplary cross-sectional view of the eductor applied to the present invention
  • Figure 3 is a main structure of the pressure regulating valve applied to the present invention It is a cross section shown.
  • an oil carrier, IG in the ship, in particular, an oil carrier, IG (inert gas) is injected through an IG line (INERT GAS LINE) 200 to prevent explosion in the tank 100 to control the concentration of oxygen. Doing.
  • IG inert gas
  • IG, VOC & AIR coexist in the IG line 200, and are connected to all the tanks 100 and the pipes in the vessel.
  • the present invention is configured to reduce the generation of VOC by condensing the VOC in all the tanks 100 above the saturated vapor pressure in a manner to introduce / pressurize the gas mixture of the IG line 200.
  • the general use of the eductor (EDUCTOR) 300 is to move the liquid / gas on the suction side more than a certain height or to smoothly discharge the liquid / gas located on the suction side by using the vacuum phenomenon generated by the high speed It was for.
  • the eductor 300 by using the eductor 300 to condense the VOC by implementing the two functions to pressurize and transfer the IG and VOC mixed gas to the base of the tank 100 It is.
  • the present invention further comprises a pressure control valve 400 in the discharge end of the eductor 300.
  • the pressure adjusting valve (PRESSURE ADJUSTING VALVE) is to generate a pressure at the inlet side to maintain above the saturated steam pressure of the cargo, for this purpose, by measuring the pressure of the front end and receiving this signal from the controller (CONTROLLER) 500
  • the stroke of the pressure control valve 400 is configured to be adjusted.
  • the discharge side of the pressure control valve 400 is connected to the base of the tank 100, if only the head is formed in the tank 100, it is possible to sufficiently condense the vaporized VOC through the head.
  • the amount of cargo in the tank 100 may vary depending on the situation, so if the pressure control valve 400 is not installed unstable cargo from the discharge portion of the eductor (EDUCTOR) 300 inside the tank 100 Can generate VOC continuously.
  • EDUCTOR eductor
  • the pressure is kept constant at the front end of the pressure control valve 400, the amount of cargo in the tank 100 can sufficiently condense the VOC if the inlet and outlet lines can be locked.
  • the eductor 300 utilized in the present invention as illustrated in Figure 2, the left end is connected to the oil pump, the other end opposite to the one connected to the oil pump is the inlet side of the pressure control valve 400 Connected with
  • the IG line 200 is inclinedly connected so as to be separated from one end connected to the oil pump in the radial direction of the eductor 300 and joined at the final discharge end.
  • a vacuum is formed directly above the point joined by the oil discharged at high speed during operation of the eductor 300, that is, the point “A” in the city, and the cargo discharged from the inlet line connected to the oil pump.
  • the IG and VOC mixture introduced into the vacuum can be mixed and moved to the discharge side, thereby maintaining a sufficiently high pressure so that the pressure on the discharge side can be maintained above the saturated vapor pressure of the cargo.
  • the internal structure of the pressure regulating valve 400 has a trim part (TRIM PART) 430 at the front end part 410 of the flow path.
  • the trim part 430 is formed in a cylindrical shape and has a plurality of holes.
  • the trim part 430 prevents a sudden pressure change when the front end part 410 and the rear end part 420 occur during fluid movement. When this phenomenon occurs, a part of the fluid is released through the hole of the trim part 430. This prevents sudden pressure changes.
  • a cavitation phenomenon occurs at the rear end 420 due to a sudden pressure difference, and this cavitation phenomenon is the same as that in which a vacuum is generated, which causes a phenomenon in which an internal fluid is vaporized by a vacuum, so that a fluid It is to promote the generation of VOC contained in.
  • the fluid passes through the trim part 430, thereby maintaining a constant pressure in the front end part 410.
  • the disk 440 is connected to the gear is driven through the driving shaft 450, it is possible to move in the direction of the fluid flow, the disk 440 if the pressure of the front end portion 410 is lower than the set pressure If it is blocked and high, the disk 440 is adjusted while opening, and the cylindrical shaft 450 is driven by a driving source such as a hydraulic cylinder or a motor.
  • a driving source such as a hydraulic cylinder or a motor.
  • the front end portion 410 is further provided with a pressure measuring sensor (not shown), the controller 500 controls the disk 440 to be connected to the controller 500 so that the pressure control can be constant. It is configured to automatically adjust the opening degree of the flow path.
  • the VOC reducing device is to suppress the vaporization of the VOC as much as possible by maintaining a constant pressure supplied to the tank 100 by installing a pressure control valve 400 on the discharge side of the eductor 300, That is, condensation can reduce the generation of VOC in the vessel.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Control Of Fluid Pressure (AREA)
  • Treating Waste Gases (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

The present invention relates to an apparatus for reducing VOCs in a vessel. The apparatus for reducing VOCs generated from a tank in a vessel, comprises an eductor which delivers the fluid pumped by a pump installed on a pipeline connected to a base portion of the tank, to the tank, wherein the eductor is arranged to suck and discharge inert gases for controlling oxygen concentration, together with the fluid; and a pressure regulating valve interposed between an outlet side of the eductor and the tank to maintain the pressure of the fluid being discharged through the eductor at a constant level by a VOC condensing pressure while the fluid is being delivered to the tank.

Description

유류운반선내 ＶＯＣ 저감장치OCO reduction device in oil carrier
본 발명은 선박내 VOC 저감장치에 관한 것으로, 보다 상세하게는 유류운반선내의 액체화물에서 발생되는 VOC를 저감하여 해양 오염을 방지할 수 있도록 개선된 선박내 VOC 저감장치에 관한 것이다.The present invention relates to a device for reducing VOCs in ships, and more particularly, to a device for reducing VOCs in ships that can be prevented from marine pollution by reducing VOCs generated from liquid cargoes in oil carriers.
최근 해상에서도 환경의 보호를 위해서 선박에서 배출되는 각종 유해가스에 대한 규제를 시행하고 있다.Recently, in order to protect the environment, various regulations on harmful gases emitted from ships are implemented at sea.
이것은 해상 물동량이 증가하면서 선박이 해상의 주요 오염원으로 대두되면서 점차 강화되고 있다.This is intensified as ships become a major source of pollution at sea as the volume of sea traffic increases.
실예로 MEPC(Marine Environment Protection Committee)에서 개정된 MARPOL Annex VI와 NOx Technical Code 2008을 채택하게 되면서 이러한 움직임은 국제 규정에 따라 강제화가 되고 있으며, 선박에서의 배출규제에 해당하는 물질은 다음과 같다.For example, with the adoption of the revised MARPOL Annex VI and the NOx Technical Code 2008 from the Marine Environment Protection Committee (MEPC), this movement has been compulsory in accordance with international regulations.
오존파괴물질 Ozone Depleting Substances
질소 산화물(NOx) Nitrogen Oxide (NOx)
황 산화물(SOx) Sulfur oxide (SOx)
휘발성 유기화합물(VOC:VOLATILE ORGANIC COMPOUNDS) Volatile Organic Compounds (VOC: VOLATILE ORGANIC COMPOUNDS)
이러한 물질들은 해양 환경 및 지구온난화에 영향을 미치는 주요인자이므로 그 배출은 엄격하게 규제되어야 하고 전 세계적으로 동일한 움직임이 발생하고 있다.Since these substances are the main factors affecting the marine environment and global warming, their emissions must be strictly regulated and the same movement is taking place worldwide.
특히, 대량의 유류를 운반하는 선박에서는 VOC 발생확률이 상당히 높은데, 이것은 운반되는 화물이 상온/상압의 조건하에서도 휘발을 할 수 있는 낮은 포화증기압을 가지고 있기 때문이다.In particular, ships carrying large amounts of oil have a very high probability of VOC generation, since the cargo carried has a low saturated vapor pressure that can volatilize even under conditions of room temperature and pressure.
또한, 선박내 탱크의 용적은 정해진 상태이기 때문에 화물이 지속적으로 휘발하게 되면 탱크 내부의 압력이 상승하게 되고, 통상적으로 탱크에 설치되어 있는 릴리프밸브(RELIEF VALVE)의 설정압력 이상으로 도달되면 대기로 방출된다.In addition, since the volume of the tank in the ship is in a fixed state, when the cargo is continuously volatilized, the pressure inside the tank is increased, and when it reaches the pressure higher than the set pressure of the relief valve installed in the tank, it is returned to the atmosphere. Is released.
따라서, 선박내 발생된 VOC는 해상 오염원으로 작용하게 된다.Therefore, the VOC generated in the ship acts as a marine pollutant.
본 발명은 상술한 바와 같은 종래 기술상의 제반 문제점들을 감안하여 이를 해결하고자 창출된 것으로, 선박내에서 발생된 VOC가 탱크 내부의 압력 상승에 따라 방출되는 점을 감안하여 온도와 압력을 제어함으로써 VOC 발생량을 저감시켜 해양 오염을 방지하고, 국제적인 규제에 대응할 수 있도록 한 선박내 VOC 저감장치를 제공함에 그 주된 해결 과제가 있다.The present invention was created in view of the above-described problems in the prior art, and the VOC generation amount is controlled by controlling the temperature and pressure in consideration of the fact that the VOC generated in the ship is released as the pressure rises inside the tank. The main challenge is to provide an onboard VOC abatement system that can reduce marine pollution and prevent international pollution and respond to international regulations.
본 발명은 상기한 해결 과제를 달성하기 위한 수단으로, 선박내 탱크에서 발생되는 VOC를 저감하는 장치에 있어서; 펌프에 의해 상기 탱크로 이송되는 유체의 관로 상에 설치되어 펌핑된 유체를 상기 탱크로 이송하되, 산소농도 조절용 불활성가스를 함께 흡입 토출하도록 설치된 이덕터와; 상기 이덕터의 토출측과 상기 탱크 사이에 설치되어 이덕터를 통해 토출되는 유체의 압력을 VOC 응축 압력으로 일정하게 유지시키면서 상기 탱크로 공급하도록 설치된 압력조절밸브를 포함하여 구성되는 것을 특징으로 하는 선박내 VOC 저감장치를 제공한다.The present invention as a means for achieving the above object, in the apparatus for reducing the VOC generated in the tank in the ship; An eductor installed on a pipeline of fluid transferred to the tank by a pump to transfer the pumped fluid to the tank, the eductor being installed to suction and discharge an inert gas for adjusting oxygen concentration; And a pressure regulating valve installed between the discharge side of the eductor and the tank to supply the tank while maintaining a constant pressure of the fluid discharged through the eductor at the VOC condensation pressure. Provide VOC reduction device.
이때, 상기 압력조절밸브의 토출측인 후단부는 상기 탱크의 기저부와 연결되어 발생된 VOC가 항상 탱크의 기저부로 먼저 인입되도록 한 것에도 그 특징이 있다.At this time, the rear end of the discharge side of the pressure control valve is also characterized in that the VOC generated by being connected to the base of the tank is always introduced to the base of the tank first.
또한, 상기 압력조절밸브의 내에는 전단부와 후단부의 압력차가 클 경우 발생하는 공동화현상(Cavitation)을 막을 수 있도록 다수의 구멍을 갖는 트림부가 더 구비된 것에도 그 특징이 있다.In addition, the pressure control valve is characterized in that the trim portion having a plurality of holes is further provided to prevent the cavitation (cavitation) generated when the pressure difference between the front end and the rear end is large.
아울러, 상기 압력조절밸브의 전단부에는 압력측정센서가 더 설치되고, 상기 압력측정센서는 컨트롤러와 연결되며, 상기 컨트롤러는 압력조절밸브의 개도를 조절하여 전단부의 압력(이덕터 후단부의 압력)을 VOC 응축 압력이상으로 항상 유지하는 것에도 그 특징이 있다.In addition, a pressure measuring sensor is further installed at the front end of the pressure regulating valve, the pressure measuring sensor is connected to the controller, and the controller adjusts the opening degree of the pressure regulating valve to adjust the pressure at the front end (pressure at the rear end of the eductor). It is also characteristic that it is always maintained above the VOC condensation pressure.
본 발명에 따르면, 선박내 VOC 발생을 억제할 수 있어 해양 오염을 막고, 선박내 거류하는 선원들의 건강 위해 요인이 제거될 뿐만 아니라, 갈수록 강화되고 있는 국제 규제에도 적극적으로 대응할 수 있어 경쟁력을 확보하는 효과를 얻을 수 있다. 또한 VOC 배출로 발생하는 화물의 손실을 저감할 수 있으므로 경제적으로 이득이 발생된다.According to the present invention, it is possible to suppress the generation of VOC in the ship, thereby preventing marine pollution, eliminating the health hazards of the crew inhabiting the ship, and actively responding to the increasingly tightened international regulations, thereby securing competitiveness. The effect can be obtained. In addition, the loss of cargo from VOC emissions can be reduced, so economic benefits are generated.
도 1은 본 발명에 따른 장치를 설명하기 위한 선박내 탱크 배관 구조도,1 is a structural diagram of the tank piping in the vessel for explaining the apparatus according to the present invention,
도 2는 본 발명에 적용되는 이덕터의 예시적인 단면도,Figure 2 is an exemplary cross-sectional view of the eductor applied to the present invention,
도 3은 본 발명에 적용되는 압력조절밸브의 요부 구조를 보인 단면도.Figure 3 is a sectional view showing the main structure of the pressure control valve applied to the present invention.
이하에서는, 첨부도면을 참고하여 본 발명에 따른 바람직한 실시예를 보다 상세하게 설명하기로 한다.Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment according to the present invention.
도 1은 본 발명에 따른 장치를 설명하기 위한 선박내 탱크 배관 구조도이고, 도 2는 본 발명에 적용되는 이덕터의 예시적인 단면도이며, 도 3은 본 발명에 적용되는 압력조절밸브의 요부 구조를 보인 단면도이다.1 is a structural view of the tank piping in the vessel for explaining the apparatus according to the present invention, Figure 2 is an exemplary cross-sectional view of the eductor applied to the present invention, Figure 3 is a main structure of the pressure regulating valve applied to the present invention It is a cross section shown.
도 1에 도시된 바와 같이, 선박 특히, 유류운반선에서는 탱크(100) 내부의 폭발을 방지하기 위해 IG라인(INERT GAS LINE)(200)을 통해 IG(불활성가스)를 주입하여 산소의 농도를 제어하고 있다.As shown in FIG. 1, in the ship, in particular, an oil carrier, IG (inert gas) is injected through an IG line (INERT GAS LINE) 200 to prevent explosion in the tank 100 to control the concentration of oxygen. Doing.
이때, IG라인(200) 내부에는 IG, VOC & AIR가 공존하고 있으며, 모든 선박내 탱크(100)와 파이프로 연결되어 있다.In this case, IG, VOC & AIR coexist in the IG line 200, and are connected to all the tanks 100 and the pipes in the vessel.
따라서, 본 발명에서는 IG라인(200)의 기체혼합물을 도입/가압하는 방식으로 모든 탱크(100)내의 VOC를 포화증기압이상으로 응축시킴으로써 VOC의 발생을 저감시킬 수 있도록 구성된다.Therefore, the present invention is configured to reduce the generation of VOC by condensing the VOC in all the tanks 100 above the saturated vapor pressure in a manner to introduce / pressurize the gas mixture of the IG line 200.
종래에도 벤트리(VENTURI) 효과를 이용한 이덕터(EDUCTOR)는 많이 사용되어 왔다.Conventionally, the EDUCTOR using the Venturi effect has been used a lot.
이러한 이덕터(EDUCTOR)(300)의 일반적인 용도는 일정한 높이 이상으로 흡입측의 액체/기체를 이송시키거나 높은 속도로 인해 발생되는 진공 현상을 이용하여 흡입측에 위치한 액체/기체를 원활하게 배출하기 위한 것이었다.The general use of the eductor (EDUCTOR) 300 is to move the liquid / gas on the suction side more than a certain height or to smoothly discharge the liquid / gas located on the suction side by using the vacuum phenomenon generated by the high speed It was for.
본 발명에서는 상기 이덕터(300)를 이용하여 이 이덕터(300)가 IG와 VOC 혼합기체를 탱크(100)의 기저부로 가압하는 기능과 이송시키는 기능 두가지를 구현하도록 함으로써 VOC를 응축시킬 수 있도록 한 것이다.In the present invention, the eductor 300 by using the eductor 300 to condense the VOC by implementing the two functions to pressurize and transfer the IG and VOC mixed gas to the base of the tank 100 It is.
이를 위해, 본 발명은 상기 이덕터(300)의 배출단에 압력조절밸브(400)를 더 포함한다.To this end, the present invention further comprises a pressure control valve 400 in the discharge end of the eductor 300.
상기 압력조절밸브(PRESSURE ADJUSTING VALVE)는 그 입구측에서 압력을 발생시켜 화물의 포화증기압 이상으로 유지시키기 위한 것으로, 이를 위해 전단부의 압력을 측정하고 이 신호를 컨트롤러(CONTROLLER)(500)에서 수신하여 상기 압력조절밸브(400)의 스트로크가 조정되도록 구성된다.The pressure adjusting valve (PRESSURE ADJUSTING VALVE) is to generate a pressure at the inlet side to maintain above the saturated steam pressure of the cargo, for this purpose, by measuring the pressure of the front end and receiving this signal from the controller (CONTROLLER) 500 The stroke of the pressure control valve 400 is configured to be adjusted.
또한, 상기 압력조절밸브(400)의 토출측은 탱크(100)의 기저부와 연결되게 되므로 상기 탱크(100) 내에 수두만 형성된다면 이 수두를 통해 기화된 VOC를 충분히 응축시킬 수 있게 된다.In addition, since the discharge side of the pressure control valve 400 is connected to the base of the tank 100, if only the head is formed in the tank 100, it is possible to sufficiently condense the vaporized VOC through the head.
한편, 탱크(100)내 화물의 양은 상황에 따라서 변동될 수 있으므로 만약 압력조절밸브(400)가 설치되지 않는다면 이덕터(EDUCTOR)(300)의 토출부에서 나온 안정되지 않은 화물이 탱크(100) 내부에서 지속적으로 VOC를 발생시킬 수 있다.On the other hand, the amount of cargo in the tank 100 may vary depending on the situation, so if the pressure control valve 400 is not installed unstable cargo from the discharge portion of the eductor (EDUCTOR) 300 inside the tank 100 Can generate VOC continuously.
그러나, 본 발명에서는 압력조절밸브(400)의 전단부에서 압력을 일정하게 유지시키기 때문에 탱크(100)내 화물의 양은 인입라인과 토출라인이 잠길 수 있을 정도이면 VOC를 충분히 응축시킬 수 있게 된다.However, in the present invention, since the pressure is kept constant at the front end of the pressure control valve 400, the amount of cargo in the tank 100 can sufficiently condense the VOC if the inlet and outlet lines can be locked.
즉, 본 발명에서 활용되는 이덕터(300)는 도 2에 예시된 바와 같이, 좌측 일단은 오일펌프와 연결되고, 상기 오일펌프와 연결된 일단과 대향되는 타단은 압력조절밸브(400)의 입구측과 연결된다.That is, the eductor 300 utilized in the present invention, as illustrated in Figure 2, the left end is connected to the oil pump, the other end opposite to the one connected to the oil pump is the inlet side of the pressure control valve 400 Connected with
이때, 상기 이덕터(300)의 반경방향으로 상기 오일펌프와 연결되는 일단과 분리되되 그 최종 배출단에서 합류하도록 IG라인(200)이 경사 연결된다.At this time, the IG line 200 is inclinedly connected so as to be separated from one end connected to the oil pump in the radial direction of the eductor 300 and joined at the final discharge end.
따라서, 상기 이덕터(300) 가동시 고속으로 배출되는 유류에 의해 합류되는 지점의 직상방, 즉 도시상 "A" 지점에는 진공이 형성되게 되고, 오일펌프와 연결된 인입라인으로부터 송출되는 화물과 상기 진공으로 인입된 IG와 VOC 혼합물이 혼합되고 토출측으로 이동될 수 있으며 이를 통해 토출측의 압력이 화물의 포화증기압 이상으로 유지될 수 있도록 충분히 높은 압력을 유지할 수 있게 된다.Therefore, a vacuum is formed directly above the point joined by the oil discharged at high speed during operation of the eductor 300, that is, the point “A” in the city, and the cargo discharged from the inlet line connected to the oil pump. The IG and VOC mixture introduced into the vacuum can be mixed and moved to the discharge side, thereby maintaining a sufficiently high pressure so that the pressure on the discharge side can be maintained above the saturated vapor pressure of the cargo.
다른 한편, 이덕터(200)의 토출측 압력은 후단부의 상황(BACK PRESSURE 등)에 따라 가변적이므로 이덕터(200)만을 사용하여 압력을 일정이상 유지한다는 것은 사실상 어렵기 때문에 앞서 설명하였듯이 그 부분에 도 3과 같은 압력조절밸브(400)를 설치하여 이덕터(200)의 토출측 압력을 지속적으로 일정하게 유지시켜야 한다.On the other hand, since the discharge pressure of the eductor 200 is variable according to the situation of the rear end (BACK PRESSURE, etc.), it is practically difficult to maintain a certain pressure using only the eductor 200. By installing a pressure control valve 400 as shown in 3 to maintain a constant pressure on the discharge side of the eductor 200.
이를 구현하기 위한 압력조절밸브(400)의 내부 구조는 도 3에 도시된 바와 같이, 유로의 전단부(410)에 트림부(TRIM PART)(430)를 갖는다.As shown in FIG. 3, the internal structure of the pressure regulating valve 400 has a trim part (TRIM PART) 430 at the front end part 410 of the flow path.
상기 트림부(430)는 원통형상으로 형성되며, 다수의 구멍이 뚫린 형태이다.The trim part 430 is formed in a cylindrical shape and has a plurality of holes.
이때, 상기 트림부(430)는 유체 이동시 전단부(410)와 후단부(420)의 발생할 경우 급격한 압력변화를 막게 되는데, 이러한 현상 발생시 상기 트림부(430)의 구멍을 통해 유체의 일부가 릴리프됨으로써 급격한 압력변화를 막게 된다.In this case, the trim part 430 prevents a sudden pressure change when the front end part 410 and the rear end part 420 occur during fluid movement. When this phenomenon occurs, a part of the fluid is released through the hole of the trim part 430. This prevents sudden pressure changes.
즉, 통상의 밸브는 급격한 압력차에 의해 후단부(420)에서 공동화 현상이 발생되고, 이러한 공동화 현상은 진공이 발생하는 것과 동일하며, 진공에 의해 내부 유체가 기화되는 현상을 유발시키게 되므로 결국 유체에 포함된 VOC의 발생을 촉진하게 되는 것이다.That is, in the conventional valve, a cavitation phenomenon occurs at the rear end 420 due to a sudden pressure difference, and this cavitation phenomenon is the same as that in which a vacuum is generated, which causes a phenomenon in which an internal fluid is vaporized by a vacuum, so that a fluid It is to promote the generation of VOC contained in.
그러나, 본 발명에서는 유체가 상기 트림부(430)를 통과하도록 하여 전단부(410)의 압력을 일정하게 유지시키는 것에 큰 특징을 가진다.However, in the present invention, the fluid passes through the trim part 430, thereby maintaining a constant pressure in the front end part 410.
아울러, 디스크(440)는 기어와 연결되어 있어 원동축(450)을 통해 구동되면서 유체가 흐르는 방향으로 이동이 가능하게 되고, 이때 전단부(410)의 압력이 설정압력보다 낮으면 디스크(440)로 막고 높으면 디스크(440)를 개방하면서 조절하게 되며, 상기 원통축(450)은 유압실린더 혹은 모터와 같은 구동원에 의해 구동된다.In addition, the disk 440 is connected to the gear is driven through the driving shaft 450, it is possible to move in the direction of the fluid flow, the disk 440 if the pressure of the front end portion 410 is lower than the set pressure If it is blocked and high, the disk 440 is adjusted while opening, and the cylindrical shaft 450 is driven by a driving source such as a hydraulic cylinder or a motor.
이때, 상기 전단부(410)에는 압력측정센서(미도시)가 더 설치되고, 컨트롤러(500)와 연결되도록 하여 압력조절을 일정하게 할 수 있도록 상기 컨트롤러(500)가 상기 디스크(440)를 제어하여 유로의 개방정도를 자동조절할 수 있도록 구성한다.In this case, the front end portion 410 is further provided with a pressure measuring sensor (not shown), the controller 500 controls the disk 440 to be connected to the controller 500 so that the pressure control can be constant. It is configured to automatically adjust the opening degree of the flow path.
이와 같이, 본 발명에 따른 VOC 저감장치는 이덕터(300)의 토출측에 압력조절밸브(400)를 설치하여 탱크(100)로 공급되는 압력을 일정하게 유지시킴으로써 VOC의 기화를 최대한 억제하는 것, 즉 응축시키는 것에 의해 선박내 VOC의 발생을 저감시킬 수 있게 된다.As described above, the VOC reducing device according to the present invention is to suppress the vaporization of the VOC as much as possible by maintaining a constant pressure supplied to the tank 100 by installing a pressure control valve 400 on the discharge side of the eductor 300, That is, condensation can reduce the generation of VOC in the vessel.

Claims (4)

  1. 선박내 탱크에서 발생되는 VOC를 저감하는 장치에 있어서;An apparatus for reducing VOC generated in a tank in a ship;
    펌프에 의해 상기 탱크로 이송되는 유체의 관로 상에 설치되어 펌핑된 유체를 상기 탱크로 이송하되, 산소농도 조절용 불활성가스를 함께 흡입 토출하도록 설치된 이덕터와;An eductor installed on a pipeline of fluid transferred to the tank by a pump to transfer the pumped fluid to the tank, the eductor being installed to suction and discharge an inert gas for adjusting oxygen concentration;
    상기 이덕터의 토출측과 상기 탱크 사이에 설치되어 이덕터를 통해 토출되는 유체의 압력을 VOC 응축 압력으로 일정하게 유지시키면서 상기 탱크로 공급하도록 설치된 압력조절밸브를 포함하여 구성되는 것을 특징으로 하는 선박내 VOC 저감장치.And a pressure regulating valve installed between the discharge side of the eductor and the tank to supply the tank while maintaining a constant pressure of the fluid discharged through the eductor at the VOC condensation pressure. VOC Reduction Device.
  2. 청구항 1에 있어서;The method according to claim 1;
    상기 압력조절밸브의 토출측인 후단부는 상기 탱크의 기저부와 연결되어 발생된 VOC가 상항 탱크의 기저부로 먼저 인입되도록 한 것을 특징으로 하는 선박내 VOC 저감장치.The rear end of the discharge side of the pressure control valve is connected to the base of the tank is generated VOC reduction apparatus in the ship characterized in that first introduced into the base of the upper tank.
  3. 청구항 1에 있어서;The method according to claim 1;
    상기 압력조절밸브의 내부에는 전단부와 후단부의 압력차에 의해서 발생할 수 있는 공동화 현상을 막기 위해 다수의 구멍을 갖는 트림부가 더 구비된 것을 특징으로 하는 선박내 VOC 저감장치.The inside of the pressure control valve is a vessel VOC reducing device further comprising a trim having a plurality of holes to prevent the cavitation caused by the pressure difference between the front end and the rear end.
  4. 청구항 1에 있어서;The method according to claim 1;
    상기 압력조절밸브의 전단부에는 압력측정센서가 더 설치되고, 상기 압력측정센서는 컨트롤러와 연결되며, 상기 컨트롤러는 압력조절밸브의 개도를 조절하여 전,후단부의 압력차이를 제거하는 것을 특징으로 하는 선박내 VOC 저감장치.A pressure measuring sensor is further installed at the front end of the pressure regulating valve, and the pressure measuring sensor is connected to the controller, and the controller controls the opening degree of the pressure regulating valve to remove the pressure difference between the front and rear ends. VOC Reduction Device in Ship.
PCT/KR2010/006858 2009-11-30 2010-10-07 Apparatus for reducing vocs in an oil carrying vessel WO2011065664A2 (en)

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US10988214B1 (en) 2020-02-04 2021-04-27 G Squared V LLC Offshore transfer and destruction of volatile organic compounds
US11878772B2 (en) 2020-02-04 2024-01-23 G Squared V LLC Offshore transfer and destruction of volatile organic compounds
US11933412B2 (en) 2021-07-16 2024-03-19 Engineered Controls International, Llc Actuating assembly for an internal valve

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KR20110060049A (en) 2011-06-08

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