دانلود رایگان مقاله زمانبندی مقارن انتقال نفت خام جلویی و پایانی پردازش پالایشگاه

Abstract

 Scheduling of front-end crude-oil transfer and refinery processing are two critically important and challenging tasks to petroleum refineries. However, the simultaneous scheduling of front-end crude-oil transfer and refinery operations has never been considered in previous studies due to the large scale and complexity of the resultant optimization problem. In this paper, a systematic methodology for simultaneous scheduling of front-end crude transfer and refinery processing has been developed. It provides a large-scale continuous-time based scheduling model for crude unloading, transferring, and processing (CUTP) to simulate and optimize the front-end and refinery crude-oil operations simultaneously. The CUTP model consists of a newly developed refinery processing sub model, a crude processing status transition sub-model, and a borrowed front-end crude transferring sub model. The objective is to maximize the total operational profit while satisfying various constraints such as operation and production speci- fications, inventory limits, and production demands. The efficacy of the proposed scheduling model has been demonstrated by an industrial-scale case study.

6. Concluding remarks

In this paper, a systematic methodology for simultaneous scheduling of front-end crude transfer and refinery processing has been developed. It provides a large-scale continuous scheduling modelto simultaneously simulate and optimize the crude unloading,transferring, and processing (CUTP). The model consists of a newly developed refinery processing sub model, a refinery processing status transition (RPST) sub model, and a borrowed front-end crude transferring sub model. Compared to recent studies, this paper has two major contributions: (1) the simultaneous scheduling of front-end crude transfer and refinery processing has been achieved; (2) RPST has been considered in the CUTP model for seamlessly connecting both front-end crude transfer and refinery processing models. The efficacy of the proposed methodology and CUTP model has been demonstrated by an industrial-scale case study.