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A simulation method for liquefaction process of floating LNG platform

A technology of liquefied natural gas and simulation method, which is applied in the field of simulation of the liquefaction process of the floating liquefied natural gas platform, can solve the problems that the floating platform cannot be loaded and shaken, and the natural gas liquefaction process cannot be dynamically described, so as to achieve the effect of promoting low cost

Active Publication Date: 2016-10-05
ZHANGJIAGANG RES INST OF HYDROGEN ENERGY CO LTD
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Problems solved by technology

[0004] The purpose of the present invention is to provide a simulation method for the liquefaction process of a floating liquefied natural gas platform, which improves the efficiency of simulation modeling of natural gas liquefaction, and solves the shortcomings of the prior art that the floating platform cannot be loaded and the natural gas liquefaction process cannot be dynamically described.

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  • A simulation method for liquefaction process of floating LNG platform
  • A simulation method for liquefaction process of floating LNG platform
  • A simulation method for liquefaction process of floating LNG platform

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with accompanying drawing.

[0025] Such as figure 1 As shown, the specific process of the simulation method for the liquefaction process of the floating LNG platform of the present invention includes the following steps:

[0026] Step 1: Establish a material property database for each component of the natural gas source

[0027] Based on the Peng Dobinson database, the homogeneous binary mixture method (Homogeneous Binary Mixture) is used to carry out the phase transition process of the same substance, and the material volume fraction at the inlet of the model is adjusted according to the gas source. Since natural gas is a mixture of various substances, which vary with the geographical location and acquisition conditions of the gas source, it is necessary to establish a gas phase and liquid phase attribute database of each component material of conventional natural gas in ANSYS-CFX, and call it accor...

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Abstract

The invention discloses a simulation method of a floating liquefied natural gas platform liquidation process. According to the method, a solid structure 3D model and a gas-liquid two-phase flow 3D mode are built in a natural gas liquidation system are built, a solid structure original state is obtained through computing and serves as a boundary condition to be loaded into a gas-liquid two-phase flow original state, then computing is conducted on the whole natural gas liquidation system through a transient fluid-solid coupling method, and a dynamic simulation computed result of the floating platform natural gas liquidation process is obtained. By means of the simulation method, the gas-liquid two-phase liquid phase change process and the gas-liquid two-phase liquid flow process of the natural gas liquidation system can be simulated simultaneously under the action of ocean platform swaying, analysis and optimization can be conducted on an existing natural gas liquefaction technology and device, The simulation method is applicable to the ocean platform with the characteristics of large swaying, limited space, high safety requirements and the like.

Description

technical field [0001] The invention relates to the field of natural gas liquefaction, in particular to a simulation method for the liquefaction process of a floating liquefied natural gas platform. Background technique [0002] The natural gas liquefaction process is one of the key processes in the production of floating LNG platforms. Analyzing and optimizing the existing natural gas liquefaction processes and equipment to adapt to the characteristics of large sloshing, limited space, and high safety requirements on offshore platforms has always been a constraint on floating platforms. The key issues of low-cost, high-efficiency and stable operation of the LNG platform. Therefore, the research on this problem has become a very critical and important research topic in the field of liquefied natural gas research. [0003] The liquefaction system of the floating LNG platform generally adopts the process of cryogenic liquefaction, which lowers the temperature of natural gas b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 倪中华严岩林元载殷劲松
Owner ZHANGJIAGANG RES INST OF HYDROGEN ENERGY CO LTD
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