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Title: Short-term scheduling of refinery operations from unloading crudes to distillation
Authors: Chandra Prakash Reddy, P.
Karimi, I.A. 
Srinivasan, R. 
Keywords: crude inventory management
crude unloading
refinery scheduling
Issue Date: 2003
Source: Chandra Prakash Reddy, P.,Karimi, I.A.,Srinivasan, R. (2003). Short-term scheduling of refinery operations from unloading crudes to distillation. Computer Aided Chemical Engineering 15 (C) : 304-309. ScholarBank@NUS Repository.
Abstract: Scheduling of crude oil unloading and processing is a complex nonlinear problem, when tanks hold crude mixes. We present an improved discrete-time formulation and a novel solution approach for a multi-CDU refinery receiving crude from multi-parcel VLCCs through a high-volume, Single Buoy Mooring (SBM) pipeline. Mimicking a continuous-time formulation, our model allows transfers to start inside of some time slots. Furthermore, it handles most real-life operational features and improves on other reported models. Our solution algorithm corrects for the concentration discrepancy arising due to crude mixing in tanks by solving a series of successively smaller MILPs without solving any NLP or MINLP. We illustrate our approach using a refinery with 3 CDUs, 8 crudes, 8 tanks, 2 crude categories, and one 3-parcel VLCC arriving in an 80 h horizon. © 2003 Elsevier B.V. All rights reserved.
Source Title: Computer Aided Chemical Engineering
ISSN: 15707946
DOI: 10.1016/S1570-7946(03)80561-8
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