7 Technical Aspects of Project

Key Findings:

  • For LNG, the reservoir (source) location is fixed. Site selection refers to LNG process plant, storage and marine. For CCS, capture (source) is fixed. Site selection refers to injection.
  • LNG plant layout is driven by managing hazard risks due to inventories of flammable material. CCS (capture and compression) layout is driven by integration with capture source.
  • Modularisation has been applicable to LNG plant construction and may be applicable for CCS
  • CCS hazards are very different than LNG but containment and dispersion strategies could be adapted
  • LNG Acid Gas Removal Unit technology is similar to pre-combustion capture but very different to post-combustion. Low pressure, very large volume and oxidising environment will require different pre-treatment, solvent selection and equipment design.
  • Compression selection is broadly similar for LNG refrigeration and CCS. Driver selection will be site-specific.
  • Utilities and infrastructure for LNG are usually provided with the project for green field locations. For CCS, integration with host facility is required.

The process technologies for producing LNG were described at some length in Section 3 and for CCS in Section 5, mainly by reference to literature already familiar to readers from the CCS community. Section 6 then discussed project implementation and execution issues at the level of the justification and broad strategies that must be considered by industry in the development of projects. This Section 7 will examine some of the more detailed non-process, technical and engineering issues that must be defined during design of an LNG project, with comparison to anticipated CCS issues. These include:

  • Site Identification, Assessment and Selection
  • On-shore Design Strategy
  • LNG Plant Engineering Design
  • Upstream Production Design