fpso oil tank closed breathing system
A breathing system and oil tank technology, applied in the field of FPSO, can solve problems such as atmospheric environment damage, economic loss, fire, etc., and achieve the effects of reducing pollution, saving energy, and ensuring stability
Active Publication Date: 2019-03-15
COSCO SHIPPING SHIPYARD (NANGTONG) CO LTD +1
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Problems solved by technology
A large amount of combustible gas will be taken out during the breathing process of this open breathing system, and these combustible gases will spread near the production device, causing potential fire or explosion hazards, and will also cause damage to the atmospheric environment, and at the same time cause certain economic loss
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[0011] The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. It should also be noted that, for ease of description, only parts related to the invention are shown in the drawings.
[0012] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.
[0013] Please refer to figure 1 , the embodiment of the present invention provides a closed breathing system for FPSO oil tanks, including an oil tank 1, the oil tank 1 is connected to a gas recovery system, a natural gas intake system and a primary venting system through a first connecting manifo...
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The invention discloses a closed FPSO petroleum tank inhalation-exhalation system. The closed FPSO petroleum tank inhalation-exhalation system comprises a petroleum tank, wherein the petroleum tank is connected to a gas recovery system, a natural gas inlet system and a first-stage venting system through a first communication header, connected to a second-stage venting system through a second communication header, and connected to an inert gas generator through a third communication header; and the gas recovery system is connected to the first communication header through a switch valve, and comprises a vent gas cooler and a vent gas scrubber which are sequentially connected. The closed petroleum tank inhalation-exhalation system is established according to the technical scheme provided by the embodiment of the invention; pressure stabilization is carried out by virtue of a combustible gas during output working, that is, inhalation, of the petroleum tank, thus the stability of a pressure in the petroleum tank and the safety of the petroleum tank are ensured; the combustible gas in the petroleum tank is recovered during petroleum input, that is, exhalation, of the petroleum tank, thus energy can be saved, pollution can be reduced, and no gathering of the combustible gas in the upper part of a hull deck and a production device area can also be ensured.
Description
technical field [0001] The present disclosure relates generally to the field of FPSOs, and more particularly to FPSO oil tank closed breathing systems. Background technique [0002] FPSO (floating production storage & offloading unit) is used for oil and gas separation of exploited oil, treatment of oily sewage, power generation, heat supply, storage and transportation of crude oil products, and integrates personnel living and production command system into one An integrated large-scale offshore oil production base. [0003] When FPSO enters the oil tank, the liquid level gradually rises, and the gas space will be compressed. At the same time, some light components in the crude oil will also volatilize and become gas when entering the tank, causing the pressure of the oil tank to gradually increase. In order to ensure the pressure balance of the oil tank, it is necessary to exhale the excess gas. The existing technical solution is to bring together the venting pipelines of ...
Claims
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IPC IPC(8): B65D90/32B65D90/30
CPCB65D90/30B65D90/32
Inventor 段凤江罗子良李荣肖飞刘兵王宁陈永涛
Owner COSCO SHIPPING SHIPYARD (NANGTONG) CO LTD