Maroun 3 Flare Gas Recovery Unit

One of the world’s environmental concerns is releasing the unwanted gaseous streams into the atmosphere by flaring. Increased demands for oil and gas production in the world resulted in associated gases flaring. In addition, all facilities in refineries are equipped with flare network for safety purposes and pressure relief at abnormal conditions. Flaring gas streams causes a great volume of carbon dioxide and other greenhouse gases (GHG) emission to atmosphere. As major consequences, global warming and environmental pollution are of great concern in the world. On one hand, the flare stream consists of GHG such as carbon dioxide, methane, and pollutants like sulfur compounds including sulfur dioxide and the NOx compounds, which are severely hazardous. On the other hand, such streams also consist of valuable hydrocarbon components that burning them causes economical detriment. It is considerable to know that in 2012, more than 143 billion cubic meters of natural gas was flared which accounts for around 3.5% of the world’s natural gas consumption. Reports showing emission of 400 million tons of CO2 due to natural gas flaring. Iran as the world’s second natural gas reserve holder produces about 200 billion cubic meters per year and burns about 10.4 billion cubic meters of produced gas as flare. This amount is about 5.2% of produced gas, which is significantly higher than world average flaring.
Flare gas recovery (FGR) is an important issue for industries to reduce their GHG emissions, environmental pollutants and to prevent hydrocarbon losses. Flare gas can be recovered in two general ways. The first group needs less possible further operation such as transporting flare gas via pipeline (PNG), flare gas injection into oil and gas reservoirs for capture and sequestration (CCS), underground gas storage (UGS), EOR purposes, and use as feedstock for petrochemical complexes. The second group applies flare gas recovery techniques, which covers different approaches, including modifying and optimizing the flare system gas-to-liquid (GTL), electricity production by gas turbines, and compression method, and etc.
Sour natural gas compositions can vary over a wide concentration of H2S and CO2 and a wide concentration of hydrocarbon components. If the H2S content exceeds the sales gas specification limit, the excess H2S must be separated from the sour gas. The removal of H2S from sour gas is called “sweetening.”
In the Maroun 3 oilfield associated gas sweetening project, engineering services, documentation, maps, confirmation of the plans submitted by the employer, purchase engineering, up to the stage of contracting with the manufacturers and suppliers, and obtaining the approval of the employer, as well as the guarantee and warranty of designs is the responsibility of Pars Virashid Engineering Consulting Co.