Topsoe has recently been awarded a 15,500 barrels per day gasoline plant in Turkmenistan. Here the gasoline is produced from natural gas via methanol. By commercialization of this gas-to-liquid technology on-shore, we have established the foundation for taking the technology off-shore with all its considerations to marinization, space limitations and choice of technology solutions that are acceptable not only from an operational point of view but also from a safety point of view.
The possibility to produce a liquid fuel from the associated gas is highly desirable in many locations, especially if it can utilize the already established logistic set-up. Considering the increasing effort to reduce or even limit by legislation the allowable flaring rate, it is highly desirable to convert the associated gas to a liquid. By producing a liquid fuel from the associated gas, the flaring no longer becomes the limitations to the crude oil production rate. Furthermore, in other locations, the need for gasoline produced directly on the vessel can be an attractive solution if local demand for gasoline is provided by import of gasoline.
This paper will describe the considerations behind the selected technology steps for the Topsoe TIGAS solution, the merits of its application and present a case study for TIGAS applied off-shore.