Dynamic optimization for gas blending in pipeline networks with gas interchangeability control

• DOI: 10.1002/aic.16908
• Publication Date: 2020-01-07T11:54:57Z
• Authors: Kai Liu; Saif R. Kazi; Lorenz T. Biegler; Bingjian Zhang; Qinglin Chen
• Keywords: Interchangeability; Solver

Abstract The increasing penetration of unconventional gas and liquefied natural poses an operational challenge on existing regional networks for quality problems. A new dynamic model pipeline network with multiple supplies is presented a special emphasis interchangeability control. Wobbe index serves as indicator calculated by equations derived from rigorous composition‐based partial differential equations. Disjunctive formulation applied to represent different modes blending due reversal, the disjunctive then reformulated nonsmooth min/max absolute value functions, which solved gradient‐based nonlinear program solver after smooth approximation. Moreover, heuristic algorithm proposed tune penalty parameters in order focus terms while keeping well‐conditioned. developed strategy are first tested small extended large model. results show that can effectively manage issues within reasonable CPU time.