Synthetic ammonia is essential for agriculture, but its production at present is unsustainable.
Ammonia synthesized with hydrogen from renewable-powered electrolysis and nitrogen …

In this paper, we present a brief overview of enterprise-wide optimization and challenges in
multiscale temporal modeling and integration of different models for the levels of planning …

In chemical product design, application of computer-aided methods helps to design as well
as improve products to reach the market faster by reducing time-consuming experiments at …

This paper proposes a multi-site global optimisation model of blending operations,
alternative routings and order scheduling with a co-production flow. It is performed in a …

Decisions in supply chains are hierarchically organized. Strategic decisions involve long-
term planning of the structure of the supply chain network. Tactical decisions are mid-term …

The scheduling of gasoline-blending operations is an important problem in the oil refining
industry. This problem not only exhibits the combinatorial nature that is intrinsic to …

In the OCP phosphate supply chain, source ores (SOs) are extracted according to a tactical
extraction programme, constrained by geological conditions that constantly limit and modify …

Gasoline blending scheduling optimization can bring significant economic and efficient
benefits to refineries. However, the optimization model is complex and difficult to build …

Gasoline is one of the largest-volume products of the oil industry that yields 60%–70% of the
total refinery revenues. This work presents a novel continuous-time mixed-integer nonlinear …

The optimization of crude oil operations in refineries is a challenging scheduling problem
due to the need to model tanks of varying composition with nonconvex bilinear terms, and …