Details

Autor(en) / Beteiligte

• Subramanian, Avinash S.R.
• Kannan, Rohit
• Holtorf, Flemming
• Adams, Thomas A.
• Gundersen, Truls
• Barton, Paul I.

Titel

Optimization under uncertainty of a hybrid waste tire and natural gas feedstock flexible polygeneration system using a decomposition algorithm

Ist Teil von

• Energy (Oxford), 2023-12, Vol.284, p.129222, Article 129222

Ort / Verlag

United States: Elsevier Ltd

Erscheinungsjahr

2023

Quelle

Access via ScienceDirect (Elsevier)

Beschreibungen/Notizen

• Market uncertainties motivate the development of flexible polygeneration systems that are able to adjust operating conditions to favor production of the most profitable product portfolio. However, this operational flexibility comes at the cost of higher capital expenditure. A scenario-based two-stage stochastic nonconvex Mixed-Integer Nonlinear Programming (MINLP) approach lends itself naturally to optimizing these trade-offs. This work studies the optimal design and operation under uncertainty of a hybrid feedstock flexible polygeneration system producing electricity, methanol, dimethyl ether, olefins or liquefied (synthetic) natural gas. A recently developed C++ based software framework (named GOSSIP) is used for modeling the optimization problem as well as its efficient solution using the Nonconvex Generalized Benders Decomposition (NGBD) algorithm. Two different cases are studied: The first uses estimates of the means and variances of the uncertain parameters from historical data, whereas the second assesses the impact of increased uncertain parameter volatility. The value of implementing flexible designs characterized by the value of the stochastic solution (VSS) is in the range of 260–405 M$ for a scale of approximately 893 MW of thermal input. Increased price volatility around the same mean results in higher expected net present value and VSS as operational flexibility allows for asymmetric exploitation of price peaks. •Novel waste tire and natural gas feedstock conversion.•Novel flexible polygeneration process with price dependent production.•Stochastic programming formulation for optimization under uncertainty.•Use of novel Nonconvex Generalized Benders Decomposition algorithm.•Value of stochastic solution in order of 260–400 M$.