11:45 - 12:15
Thursday, 19 September 2019
T1.8 The Development of Small-scale LNG Packages
The small-scale LNG market around the world is expanding, and further growth is expected. Small-scale LNG packages are being developed to provide fuel for such purposes as bunkering, motor vehicles and peak shaving, and such packages are starting to be applied for power plants in remote areas. Further, small-scale LNG packages are being developed to meet the increasingly stringent environmental limits on CO2 emissions, the fugitive emissions of hydrocarbons, and the sulfur levels permitted in fuels, especially in Europe.
In addition, small-scale LNG packages offer an attractive and economical means of debottlenecking large LNG trains where their owners desire to increase LNG production while minimizing the CAPEX, since a small-scale liquefaction package can be added without adding or modifying the utilities and offsite facilities in the existing plant. In fact, JGC has extensive experience conducting such LNG debottlenecking studies and can propose an optimal LNG enhancement after analyzing the design margins of the existing equipment and facilities.
Given these market trends in the LNG value chain, which includes liquefaction, transportation and regasification, JGC has developed a typical Pre-FEED design for a small-scale LNG package (0.3 mtpa) intended to be used as a means optimizing liquefaction. The package comprises all the facilities required for plant operation, including the process train, utilities, and offsite and storage facilities, and JGC has found that the CAPEX for the offsite and utility facilities would probably be the most significant factor affecting the investment decision of a prospective plant owner. Accordingly, JGC has developed several options to reduce the CAPEX for those facilities by relying on making use of existing infrastructure and on taking advantage of site conditions.
Further, this Pre-FEED design makes use of two technologies for which JGC has patents pending. The first is a unique plot plan design that is intended to facilitate the use of small cranes for equipment maintenance and that reduces the construction work volume and costs without compromising safety. The second is to design the plant to use gas engine generators, thereby reducing CAPEX by eliminating high pressure piping and equipment.
In addition, JGC has extensive experience with both, conventional stick-built construction methods and the use of shop-fabricated modules. Thus, JGC can provide an optimal solution based on using either, one of these alone or the two in combination, depending on such factors as the site conditions, the statutory requirements on local content and the construction labor market.
Over the years, the LNG industry has grown and matured based on plants of ever increasing scale, and although such large-scale LNG projects will continue to play a role in the LNG industry, small-scale LNG packages are fast becoming attractive solutions in certain niche markets. JGC is, therefore, applying its experience and expertise in the design and construction of LNG plants to developing the small-scale solutions needed to take full advantage of these increasingly lucrative markets.