Large floating liquefied natural gas production, storage and unloading device

Abstract

The invention relates to a large floating liquefied natural gas production, storage and unloading device which comprises a ship and FLNG upper facilities arranged on a deck of the ship. The ship is sequentially provided with a fore peak tank, an inner rotary tower single-point bin, an LNG bin, an LPG bin, a gas condensate bin, an oily water bin, a fresh water bin, a diesel oil bin and an after peak tank from a ship bow to a stern. The FLNG upper facilities include a mooring device, a torch tower, an underwater production system control module, a preprocessing module, an LPG recycling module, a propane precooling module, a fuel gas compression module, an LNG output module, a liquefying and refrigerating module, a reservation module, a power station module, an electric room module, an unloading area, a living building and an LPG and gas condensate stern conveying device, wherein the mooring device and the torch tower are distributed on the ship bow, and the underwater production system control module, the preprocessing module, the LPG recycling module, the propane precooling module, the fuel gas compression module, the LNG output module, the liquefying and refrigerating module, the reservation module, the power station module, the electric room module, the unloading area, the living building and the LPG and gas condensate stern conveying device are distributed from the ship bow to the stern in a modular mode. The service life of the device can be 20 years in an in-water mode, the device can bear limiting typhoon and sea conditions with the recurrence interval of ten thousand years, and the device can be widely used for floating production, processing, liquefying, storage and output of natural gas in deep and high seas.

Description

technical field [0001] The invention relates to a natural gas production, storage and unloading device, in particular to a large-scale floating liquefied natural gas production, storage and unloading device for natural gas exploitation, processing, liquefaction, storage and export, and belongs to the field of marine natural gas development. Background technique [0002] With the growing demand for clean energy natural gas, the development of deep-sea natural gas resources has become a hot spot in the development of offshore oil and gas resources. The traditional offshore natural gas development model is to use underwater production systems or offshore platforms to transport the extracted natural gas to land terminals through submarine pipelines, and then generally use two methods to transport natural gas: the first is to use pipelines and other facilities to directly send it to users; the second One is to build a natural gas liquefaction plant at a land terminal, transport t...

AI Technical Summary

Problems solved by technology

However, if the natural gas field is located in the deep sea, due to the technical limitations of natural gas development and the huge investment in natural gas development engineering facilities such as underwater production systems and submarine pipelines, the deep sea natural gas cannot be effectively developed

[0003] In view of the advantages and disadvantages of current offshore natural gas development engineering facilities, various FLNG (floating liquefied natural gas production, storage and unloading devices) for the development of deep sea natural gas have been proposed in the field of offshore oil and gas development, but all current FLNG solutions are aimed at targets with better environmental conditions Gas fields, FLNG for deep-sea natural gas development for harsh and complex marine environmental conditions is still in a blank state

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