Pretreatment system and method for offshore fixed liquefied natural gas platform

A liquefied natural gas, fixed technology, applied in pipeline system, gas fuel, gas/liquid distribution and storage, etc.

Pending Publication Date: 2020-06-05
CHINA PETROLEUM ENG CORP LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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However, the current relevant research and reports have not involved the aforementioned schemes, and it is necessary to carry out adequate design and analysis

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  • Pretreatment system and method for offshore fixed liquefied natural gas platform

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[0059] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0060] Any feature disclosed in this specification (including any appended claims, abstract), unless otherwise stated, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0061] Such as figure 1 As shown, a pretreatment system for offshore fixed LNG platform, including onshore raw gas receiving system I, onshore sea gas receiving system II, onshore slug flow capture system III, onshore commodity gas receiving system IV , land-sea pipeline system V and offshore receiving system VI, the onshore raw gas receiving system I, onshore sea gas receiving system II, onshore slug flow capture system III and onshore commercial gas receiving sys...

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Abstract

The invention discloses a pretreatment system and method for an offshore fixed liquefied natural gas platform. The pretreatment system comprises an onshore raw gas receiving system, an onshore sea gasreceiving system, an onshore slug flow capture system, an onshore marketable gas receiving system, a land-sea pipeline system and an offshore receiving system. The pretreatment system and method forthe offshore fixed liquefied natural gas platform integrates the technical and economic advantages of the offshore fixed liquefied natural gas platform, gives further consideration to problems of land-sea multi-gas source, multi-gas quality, flow assurance, pipeline landing, large slug flow capture and the like, proposes a mode of performing centralized pretreatment onshore on an onshore gas source, guiding the offshore gas source onshore for pretreatment after being collected on the platform in a centralized manner, and feeding back offshore for deep treatment according to a special medium line after the gas source is subjected to the centralized pretreatment onshore, expands different gas source acceptability of the offshore fixed liquefied natural gas platform to the greatest extent, gives full consideration to the problems of slug flow capture frequency of a slug flow capture device, offshore construction cost and the like, and greatly reduces the landing pipeline density from theland to the platform.

Description

technical field [0001] The invention belongs to the technical field of liquefied natural gas treatment, in particular to a pretreatment system and method for offshore fixed liquefied natural gas platforms. Background technique [0002] As the proportion of clean energy consumption increases, the global sales system of fossil energy represented by natural gas is gradually improved, and natural gas-producing countries have increasingly strong demand for processing liquefied natural gas to meet the economic requirements of ultra-long-distance transportation. The main component of liquefied natural gas is methane, which is recognized as the cleanest fossil energy on earth. It is colorless, odorless, non-toxic, and non-corrosive. Its volume is about 1 / 625 of the volume of the same amount of gaseous natural gas. At present, the construction mode of LNG processing plants mainly depends on the location of the gas source and the approval of onshore land use. Generally, onshore gas so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17D1/02F17D1/08F17D3/01C10L3/10
CPCC10L3/101F17D1/02F17D1/08F17D1/082F17D3/01
Inventor 陈俊文汤晓勇郭成华陈海鹏陈彰兵缪晖蒋志明周璇王长峰郭艳林杨帆
Owner CHINA PETROLEUM ENG CORP LTD
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