(69b) A New, Powerful Technology: Integrated LNG to Power

The development of a diversified competitive global LNG market has given rise to small to mid-scale applications of LNG. LNG to Power projects have become particularly attractive for developing markets, where traditional infrastructure is underdeveloped. In this context an integrated power solution that is simple, efficient, and cost effective has a distinct advantage over more complex traditional designs.

This paper will present a novel technology for the regasification of LNG by utilizing low-grade waste-heat. The new technology is well suited for integration with power production offering a simple and compact design that is efficient and environmentally friendly. We will compare this technology to the typical options for regasification in LNG to Power projects.

The technology is inherently scalable allowing application for smaller scale installations that are increasingly popular as LNG becomes a cost effective commoditized fuel that is preferred for its low emissions. The ability to recover low grade heat from the combustion of the LNG, increases the efficiency of the system. Because the heat is recovered from the process, the technology is insensitive to environmental conditions, a weakness of alternative methods such as an ambient air vaporizer that is typically used in small scale applications.

This novel technology differs from common intermediate fluid vaporization methods because it eliminates the pumping circuit typically used. The elimination of the pumps reduces maintenance and operating expense. Simplification of the operating and maintenance requirement is important because many of the target applications are in locations where limited infrastructure drastically increases the cost of maintenance.

The applications for this regasification technology is not limited to LNG to Power projects, but can also be used in other services where a sufficient supply of low grade waste heat is available. This includes industrial applications such as steel mills, drying furnaces and baking furnaces. These are unique applications that demonstrate the flexibility of the waste heat based technology.

The new technology presented in this paper for vaporizing LNG using a low grade heat source is perfectly matched to the needs of LNG to Power projects. The stack gas from the power plant provides an ample supply of waste heat. Utilizing this waste heat improves the overall efficiency and lowers the environmental impact of the power generation installation.