Objective A static calculation method of BOG generation under various working conditions in LNG terminal was studied.

Methods The BOG generation in the LNG terminal was disassembled into different single causes, and the static calculation method of BOG generation under each single cause was provided. The total amount of BOG generation in the terminal under different working conditions can be estimated by superposition.

Results Based on the initial data of the Beijing Gas LNG project, the static calculation results were compared with the simulation results under the conditions of unloading, minimum output, lean liquid and no loading. The results show that the BOG production calculated by the static calculation method has high accuracy. However, the static calculation method still has shortcomings at this stage.

Conclusion The static calculation method has high reliability and feasibility in guiding production and operation.