Method for constructing natural gas liquefaction plant
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The construction of natural gas liquefaction plants is hindered by the longer lead time of refrigerant compressors, which prolongs the overall construction period due to the need for remote assembly and transportation of refrigerant compression modules.
Innovation Solution
The method involves transporting and installing a refrigerant compression module body with a frame that allows for easy mounting of the refrigerant compressor, utilizing space efficiently by placing air-cooled heat exchangers above and securing the compressor at the lowest part of the frame, and connecting refrigerant pipes via joint pipes for stable connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the refrigerant compressor is mounted in the module at a place remote from the construction site before transportation, then the module can be assembled in advance, but the construction period becomes longer due to the longer lead time of the refrigerant compressor
Solution Approach 1:
The refrigerant compression module is divided into two independent parts: the module body (including frame, piping, and other equipment) and the refrigerant compressor. The module body can be manufactured and prepared in advance at the construction site, while the compressor is ordered separately and mounted later when available, eliminating the need to wait for compressor availability before starting module preparation.
Solution Approach 2:
The module body is assembled in advance at the construction site before the compressor is ready. This preliminary action includes installing the frame, piping, and other equipment, so that when the compressor arrives, only the mounting operation remains, significantly reducing the overall construction period.
2Productivity
If the module is assembled remotely and transported to the construction site, then construction efficiency is improved, but the refrigerant compressor lead time prolongs the overall construction period
Solution Approach 1:
The construction process is segmented into two independent tracks: (1) module body preparation at the construction site, and (2) compressor manufacturing and delivery. This segmentation allows parallel execution of tasks, improving overall construction efficiency while eliminating the bottleneck caused by compressor lead time.
Solution Approach 2:
The module body is prepared in advance at the construction site, including installation of the frame and piping system. This preliminary action ensures that when the compressor is ready, the module is nearly complete and only requires compressor mounting, thus maintaining high construction efficiency without being delayed by compressor availability.
3Loss of time
If the refrigerant compressor is ordered early to shorten construction period, then the construction period is reduced, but the module assembly complexity increases due to coordination requirements
Solution Approach 1:
The module design separates the compressor mounting interface from the rest of the module body, creating a standardized interface that simplifies coordination. The frame includes a predefined mounting space with connection points that match the compressor, reducing assembly complexity despite the segmented construction approach.
Solution Approach 2:
The frame structure serves multiple functions: it supports the module body components, provides the mounting space for the compressor, and includes piping connections. This multi-functionality reduces the number of separate components and interfaces, simplifying the overall assembly process even when constructed in segments.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach minimizes the impact of refrigerant compressor lead time on the construction period, reducing the overall construction time by allowing for quicker module assembly and installation.
Implementation Method 1
a refrigerant compressor for compressing a refrigerant
Implementation Method 2
a refrigerant compression module body provided with a frame allowing the refrigerant compressor to be mounted therein
Data Source
AI summary
Provided is a method of constructing a natural gas liquefaction plant, which can shorten a construction time period by minimizing effect of a lead time for the refrigerant compressor thereon, the method including: transporting a refrigerant compression module body 175 to an installation area 85, wherein the refrigerant compression module body is provided with a frame 120 configured to allow refrigerant compressor 150 for compressing a refrigerant for cooling natural gas to be mounted therein; installing the refrigerant compression module body 175 to the installation area 85; and mounting the refrigerant compressor 150 into a mounting space 130 predefined in the frame 120 of the installed refrigerant compression module body.