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Proceedings of the Second International Energy 2030 Conference,
November 4-5, 2008, Abu Dhabi, U.A.E.

Systematic in-Process Modification Approach for Enhanced Waste Energy Recovery in Gas Plants

Saleh A. Al-Hashimi

The Petroleum Institute, UAE

Ahmad Nafees

The Petroleum Institute, UAE

M. B. Nouredlin

Saudi Aramco, Saudi Arabia

A. S. Aseeri

Saudi Aramco, Saudi Arabia

A. H. Qahtani

Saudi Aramco, Saudi Arabia

Abstract
The growth of the oil and gas industry has been steady with strong growth over the past few years. Demand for hydrocarbons is has been increasing to meet the growth requirements around the globe which mainly come from growing Asia. Consequently, the oil and gas sector is expected to maintain its growth and expansion in infrastructure and facilities is mandated. Recent escalated energy prices have prompted researchers and scientists in both academia and industry to improve productivity and energy efficiencies within threir process plants. In addition to cost-effectiveness and product quality, sustainability, reduction in greenhouse gas emissions and other environmental aspects need to also be addressed. During the last few decades, a number of methods and tools have been developed for conservation and optimum utilization of energy. Primarily these methods were based on mathematical programming techniques and pinch technology to synthesize and operate processes optimally from an efficient use of energy point of view. The application of these methods has been limited due to several unresolved issues. Hence, these approaches could not achieve global optimal energy-consuming conditions. This study was undertaken to determine systematically (i) global minimum energy consumption for both heating and cooling utilities under all possible combination of allowed process operating and design modifications and (ii) the set of process conditions that render global minimum heating utility consumption without exhaustive enumeration in an industrial gas plant that consists of several processing units. This poster describes the energy savings and benefits obtained by using systematic in-process modification in a gas plant. It presents a new methodology for systematic targeting of energy consumption under all possible combination of in-process modifications and the automatic selection of the optimal process operating conditions that achieve desired targets. The application of this approach is not only beneficial in




 

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