Abstract

The Research and Development Center (R&DC) of Saudi Aramco has developed new application in ultrasound technology to support the huge networks of crude oil and gas processing facilities, including items of equipment running 24/7.Gas turbines are playing a vital role in supplying energy to different facilities within the companies and they need complex air filtration systems to operate at high speeds and prevent turbine section components from erosion, fouling, and corrosion. Saudi Aramco’s plants have a large number of energy producing gas turbines and the frequent air filter replacement program has become so expensive, that consequently, it has attracted the attention of the plant management to find an appropriate solution for cost reduction.R&DC of Saudi Aramco has completed an extensive investigative study to design and examine ultrasonic (sound waves) technology as a practical, easy-to-apply, and cost-effective cleaning procedure to remove the dust and dirt to maximize the lifetime of the air filters. Experimentally, high frequency sound is passed through a cleaning solution, providing waves of high and low pressure. Microscopic bubbles are produced, which implode almost immediately, bringing the cleaning fluid into contact with the surface being cleaned with great force, thereby breaking down dirt particles and cleaning the surface. Using sonic cleaning, it has been found that the filters are not only cleaned from dust and dirt but also from organic materials without affecting the physical integrity of the air filter.This technical paper benchmarks a technology that has been established to reuse more than 10,000 air filters, which are usually discarded companywide each year. Implementing this technology would not only result in operational cost savings, but also would contribute to the reduction of the local and global environmental impact.

Highlights

  • The gas turbine is an internal combustion engine that ingests a large amount of ambient air during operation (Figure 1) (Al-Shafei & Alabedi, 2010)

  • In the Research and Development Center (R&DC) we have developed an innovative chair to hold the spent air filter during the ultrasonic wave washing process

  • The environmental scanning electron microscope (ESEM) image of the used air filter cartridge sample (Figure 13) showed that the cartridge openings were completely blocked with dust

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Summary

Introduction

The gas turbine is an internal combustion engine that ingests a large amount of ambient air during operation (Figure 1) (Al-Shafei & Alabedi, 2010). Due to the combustion process, high temperature and high-pressure combustion gas are generated to be supplied into the turbine portion. By expansion of the combustion gas, moving blades of the turbine portion are driven to rotate a rotor and thereby to generate an electric power. The system should be selected based on the operational conditions and goals for the turbine, the contaminants present in the ambient air, and expected changes in the contaminants in the future due to several changes, such as seasonal changes (2)

Filtration Mechanisms
Components of a Filtration System
Weather Protection and Trash Screens
Inertial Separators
Prefilters
Moisture Coalescers
Self-Cleaning Filters
Erosion
Fouling
Saudi Aramco Plant
Industrial Cleaning Systems
Auger Washers
Vibratory Cleaning
Spray Washers
Hydrojetting
Experimental Section
Air Filter Sample Preparations
Water Chemical Analysis
Particle Size Distribution Analysis
Ultrasonic Cleaning Procedures
Results and Discussions
Conclusions
Full Text
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