Abstract

Natural Gas is the cleanest source of fossil energy, resulting in lower carbon emissions from coal and oil. In gas processing, the process done to separate the product composition is the fractionation process. In the gas industry, facilities/parts that are specifically to perform the process are called liquefied petroleum gas Facility plant (LPGF). Process Control is the key to a safe and profitable process industry. The Plantwide control is a structural design and control strategy for the factory as a whole. The preferred control method on this final task is the PID for regulatory control as well as the decentralized supervisory control for supervisory control and the real time optimizer for its optimization. The new plantwide control procedure can increase the profit in the process liquefied petroleum gas facility plant up to USD 643 h–1 (3 %) and decreased energy use by USD 5 h–1 (5.16 %). The application of the Plantwide control on the liquefied petroleum gas facility is also able to produce a stable system response when the interruption of the feed flow rate changes. This is demonstrated by decreasing slurries time and maximum overshoot as well as eliminating steady-state errors.

Highlights

  • The world's need for primary energy continues to increase

  • Experts are still struggling to find a new source of energy so that the fossil energy source still holds the dominant role in the future

  • The optimization that has been done by giving changes to the feed flow rate from 150 481 kg h–1 to 55 171 kg h–1 or 100 % to 37 % obtained by the change obtained can be seen in Table 11 to Table 13

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Summary

Introduction

The world's need for primary energy continues to increase. Natural Gas is the cleanest source of fossil energy, resulting in lower carbon emissions from coal and oil. The global warming issue causes the demand for natural gas to increase as a clean energy source [1]. Natural Gas is a mixture of hydrocarbons such as methane, ethane, propane, butane, and higher fraction. The process done to separate the product composition is the fractionation process. The fractionation process is performed on fractionation units consisting of column Deethanizer, Depropanizer, and Debutanizer. Facilities/parts that are to perform the process are called Liquefied Petroleum Gas Facility Plant (LPGF) [2]

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