Abstract
Energy efficient use constitutes the main focus and ultimate goal in oil and gas industry nowadays with low oil prices era. A meticulous planning and a corporate strategy of energy use can improve significantly the company's profitability and reduce its environmental impact in corporate level while can improve the resources management and macro-economics in national level. Towards to this direction, ADGAS has implemented an Energy Management System (EnMS) which covers plant facilities as well as it considers all organization's aspects. Equipped with policy, manuals, procedures, and daily monitoring of its Significant Energy Uses (SEUs) within the plants, this system contributes towards the organization's continuous improvement in energy usage of the assets through regulating and monitoring energy use. Defining SEU can help the organization to focus on areas where significant saving can be made. Boiler Feed Water (BFW) pumps of LNG train 3 are one of the 2015's significant energy uses due to their high steam consumption and its potential for improvement. With a purpose of saving energy, steam reduction is considered as a main target for improving BFW pumps performance. The implementation of this action was completed in two stages. At the first stage, the differential pressure was reduced from 15 bar to 13 bar. This reduction led to a decrease in the steam consumption by 0.61 Ton steam/hr while the level indications of Boiler 5 and 6 steam drums did not experience any change or disturbance. During the second stage, the differential pressure set point was further decreased to 12 Bar, which led to saving of up to 0.26 Ton steam/hr. In conclusion, combining the results of the two trails (reducing the differential pressure from 15 Bar to 12 Bar), the total achieved steam savings was 6,559 GJ.
