selecting of vaporizer in lng regasification plant

During last years, lng industry has been expanding across the world# due to the high demand for energy and natural gas, lng plants and regasification units have been implemented or are constructing in the world# this paper presents an overview of the lng process, gas liquefaction, loading, transportation and regasification#liquefied natural gas is stored in tanks# in the regassification process, the liquefied natural gas must be condensed in order to prevent flaring and venting of the boil-off gas# then, the condensed gas is sent to the vaporizer to be re-gasified after heating# the main types of evaporators used in the lng industry include: open rack vaporizers (orv), submerged combustion vaporizers (scv), intermediate fluid vaporizers (ifv), ambient air vaporizers (aav), shell and tube type (stv), hot water bath type#