الفهرس 
OVERVIEW OF GAS PROCESSING AND THE PLANT CASE STUDYOnly 14 pages are availabe for public view
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Abstract
Within gas plant processing facilities; controlled volumes of gases are used to sweep the plant flare system as purge gases to prevent air ingress and protect the entire flare system from any back fire events. The use of fuel gas in flare and vent headers for purging purposes results in environmental emissions as well as the losses due to burning such amount of fuel energy. Flare emissions can be in the form of COx or NOx when fuel gas burnt in the flare headers. These environmental and economic considerations encourage researches to reduce production of greenhouse gases as well as saving thermal energy. This act as driver for gas producing companies to find alternative ways to replace fuel gas purging by another safe and available sources.
This thesis studies the positive environmental and economical impacts of three proposals for retrofitting the flare system of gas processing plants. These three proposals include, using flare gas recovery ststem, Using Nitrogen inert gas in purging flare system and/or using emissions of gas turbine generators in purging flare system. Nitrogen or gas turbines emissions will be repalcing conventional fuel gas purge. The flared gas recovery is done using skid mounted recovery unit using liquid ring compressor technology with stand alone prorgramable logic control.
The replacement of fuel gas with Nitrogen or gas turbine emissions in purging the flare is currently being developed to reduce environmental impact. Usage of these inert gases eliminate the environmental deleterious impact. In case of the unavailability of the Nitrogen or gas turbine emissions, the fuel gas purge stream will still be available to be operated as back up during upset scenarios. The study concluded that the total emissions will be saved after applying any of the three proposals is estimated to be 23,469 Ton per year; as well as saving a significant cost impact of fuel flared per year. The estimated cost saving is calculated to be 2,325,306 USD per year; given the price of the gas is 5.33 $/btu.