The liquefied natural gas (LNG) market has grown significantly and the growth is expected to continue in the future. New technologies that lead to an increased efficiency in each step of the LNG chain are currently under consideration. The studies and the commercial applications associated with the LNG regasification processes can be divided into three large groups: (a) Direct and indirect heat transfer processes between water and LNG; (b) LNG-based co-generation systems, and (c) industrial complexes consisting of an LNG import terminal and an energy-conversion plant, or an energy-intensive chemical plant.
In this paper a novel concept for integrating the LNG vaporization into an air separation process is presented. The simulation, energy and exergy analyses are discussed.