Multi-Variable LNG Optimization Using Parallelized Simulator with Integrated Optimizer

LNG liquefaction is an energy-intensive process, and thus lends itself to optimization. Our work highlights the propane/mixed refrigerant (C3MR) section of this process. A common practice for C3MR optimization is to connect a generic optimization engine to a process simulator. While this approach can work well for adjusting a single type of independent variable, attempting to adjust many variables can lead to local optima, trapping the optimization engine.
Using CHEMCAD’s integrated optimization engine and multi-core technology, we can easily set up rigorous optimizations, run them efficiently, and have a high degree of confidence that our solution is the global optimum.