Application of Boil Off Gas Compressors in LNG Plants

Abstract

This paper discusses complexities and challenges of managing boil off gas (BOG) in LNG liquefaction plants. Most publications in the past have focused on regasification terminals and have not addressed the area of liquefaction plants. The paper discusses the generation and management of BOG and the associated networks and machinery to manage it. BOG Options available for both greenfield plants and in debottlenecking situations are covered. The advantages and disadvantages of different options and compressor systems are covered and the concept of dynamic simulation as an analysis tool is addressed.

Dynamic Simulation Study for Boil-off Gas Minimization at Liquefied Natural Gas Exporting Terminals

“…4 Chaker et al stated that most publications in the past have focused on regasification terminals and have not addressed the area of liquefaction plants; thereby providing discussion on generation and management of BOG in a LNG plant, and the associated networks and machinery to manage BOG handling. 6 Wicaksono et al studied the efficient use of recovered jetty-BOG as fuel gas using mixed-integer nonlinear programming for a fuel−gas network. 7 The effect of environmental conditions at plant locations on LNG processes has been studied in the literature.…”

Thermodynamics and emission modeling of liquefied natural gas (LNG) tanks and fueling stations

“…The boil-off gas from LNG cryogenic tanks has been a concern since the beginning of the commercial LNG industry in 1970s [17,18]. Numerous researchers have approached several topics related to LNG and BOG including: advantages and disadvantages [19][20][21], production and infrastructure [22][23][24][25][26][27], applications for trucks and buses [28][29][30][31], handling [32][33][34][35][36][37][38], and safety [39][40][41][42][43][44]. However, not many comprehensive analytical and dynamic thermodynamic models of BOG rate have been developed [14], [45], and [46].…”