Associated Petroleum Gas / Flare Gas

In most cases, installations of power generation with associated gas are in remote areas. Power supply in such areas is often poor. Therefore, the common solution in the past was to use diesel gensets. Due to rapidly rising oil and consequently diesel fuel prices, this solution has become increasingly uneconomical. Furthermore, the supply of diesel fuel and the necessary storage also are becoming more expensive. The composition of associated petroleum gas is often well suited for the combustion in gas engines. However treatment in the form of de-humidification and removal of condensate hydrocarbons from the gas is generally required. Due to relatively high content of higher hydrocarbons, a derating of the nominal natural gas output may be required. In the case of a high concentration of H2S, desulphurisation of the gas may also be needed. The gas that is treated in the above-mentioned way is a valuable fuel for the independent power supply with gas engines. The engines are normally installed in containerized units with all peripheral systems (ventilation, silencers, cooling, control room) installed inside or on the roof. Depending on local demands, the waste heat from the engines can also be used for heating or cooling purposes on site.