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Wastewater treatment system for fpso

A waste water treatment system, rainwater technology, applied in water treatment equipment, water/sewage treatment, natural water body treatment, etc., can solve the problem of FPSO space narrowing and so on

Pending Publication Date: 2020-05-19
CHIYODA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, large tanks are required to store the sewage and the space on the FPSO becomes narrow

Method used

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  • Wastewater treatment system for fpso
  • Wastewater treatment system for fpso
  • Wastewater treatment system for fpso

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Embodiment Construction

[0027] Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

[0028] Such as figure 1 Shown, LNG-FPSO 1, also known as FLNG, is an offshore facility for the purification of natural gas, liquefaction of natural gas, storage of LNG and unloading of LNG. FPSO 1 has a hull 2 ​​floating in the sea. A production facility 4 is provided on the deck 3 of the hull 2 ​​for producing LNG. The production facility 4 comprises a plurality of modules 5 and 6 . A plurality of LNG tanks 7 for storing LNG produced by the production facility 4 are provided in the hull 2 ​​. A resident facility 8 for workers to resident is provided at the rear end of the deck 3 . Further, the FPSO 1 has a waste water treatment system 10 to treat waste water such as rainwater and leakage liquid generated in the plurality of modules 5 , 6 .

[0029] Each module 5, 6 has a plurality of laminates 11, 12 arranged vertically. Some of the plurality of m...

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PUM

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Abstract

A wastewater treatment system (10) for a Floating Production, Storage and Off-loading system (FPSO) has a liquid receiver (26) provided under at least one of first devices (13), a temporary storage tank (47) connected to the liquid receiver via a conduit to temporarily store the liquid collected in the liquid receiver, a drain conduit (52) connected to the temporary storage tank and provided witha first valve (55) for draining the liquid stored in the temporary storage tank to the sea, and a contaminated water storage tank (58) connected to the temporary storage tank via a conduit provided with a second valve (57).

Description

technical field [0001] The invention relates to a waste water treatment system for FPSO. Background technique [0002] There is known a ship having a collection header that collects liquid containing rainwater falling on deck and a header formed on the outer plate of the hull to discharge the liquid collected in the collection header to the sea. Export (see, for example, Japanese Unexamined Patent Application Publication No. 7-117787). [0003] In LNG-FPSO (Floating Production, Storage and Offloading System), chemicals such as amines and monoethylene glycol are often used to extract and refine natural gas. Therefore, if the rainwater is in fact discharged outside the ship, the chemical substance may be discharged from the ship together with the rainwater when the chemical substance leaks, and this pollutes the sea. On the other hand, all rainwater falling on the FPSO can be stored as sewage in tanks, and the stored sewage can be periodically unloaded into other containers....

Claims

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Application Information

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IPC IPC(8): C02F1/00C02F103/00C02F103/36C02F1/40B63B35/44B63J4/00B63B17/00C02F101/32
CPCB63B17/0036B63J4/006C02F1/006C02F1/008C02F1/40B63B2035/448C02F2101/32C02F2103/001C02F2103/008C02F2103/365C02F2201/001C02F2201/005C02F2209/003C02F2209/05C02F2209/06C02F2209/42
Inventor 星野和弘并木贵志新沼启船越亮典
Owner CHIYODA CORP