Induced Gas Flotation (IGF)

Induced Gas floatation is one of the various technologies available for the removal of oily particles contained in produced water. The main purpose of the IGF unit is to separate free oil from water. In this equipment, fuel gas is induced in the oily water in the form of tiny bubbles which are generated from a pumping device. The tiny bubbles attach to suspended oil droplets causing them to float.

This unit is a dispersed gas and coalescent produced water clarifier. It operates by dispersing natural gas (as fine bubbles) in the total produced water stream by means of a differential pressure induction system. This system utilizes recirculation pumps to pressurize the water manifold that supplies the venturo eductors. As the pressurized water flows through the venturo eductros blanket gas is induced into and mixed in the water. The waterlgas mixture is ejected from the venturo eductor bottoms(s). The resulting small bubbles rise through the effluent stripping entrained oil. As the gas rich effluent proceeds it flows through the coalescing screens, which enhance oil removal. The stripped oil rises to the surface or froth. The froth is propelled over the oil bucket-skimming weir by the internal vessel hydraulics.

This unit has two electric motor driven produced water recirculation pumps. These pumps circulate design flowrate based on the inflow flowrate. There are two double diaphragm pumps for the recovered oillcondensate. They transport the oillcondensate to the wet oil tank or heater treater. These units utlize Venturo Eductor assemblies. They are individually accessible through the water manifold top. Each VE is comprised of an upper and lower eductor tube, a VE nozzle and a static mixer. The VE’s are easily removed.