Recently, GN Solid Control has completed the design and manufacture of a set of oil sludge treatment system for an oil field environmental protection company in China. Since the oil sludge treatment system was launched on the market, it has been widely concerned by customers no matter in China or outside of China, and the feedback from the on-site operation of the market is good. More and more oil field environmental protection contractors inquire and order the system as an important solution to reduce the content of harmful substances in oil sludge efficiently and economically.
The oil sludge treatment system has two separation principles: chemical dosing and physical separation after heating. GN oil sludge separation system is composed of several modules with different functions to gradually recover water and oil from the sludge. The following is a brief introduction of the system:
1) Sludge vacuum transfer pump module – the sludge from oil-based mud drilling cuttings has high viscosity and high sludge content, which requires a powerful and efficient conveying device to suck the sludge out of the mud pit and feed to the oil sludge treatment system. GN sludge vacuum pump is a fully pneumatic pump with no electrical components and does not produce any sparks in use. it is especially suitable for oil and gas explosion-proof environment. With 85Kpa vacuum, the viscous sludge can be sucked and discharged to other place far away.
2) Pre-mixing module – before the sludge is fed into the separation module, the material needs to be homogeneously mixed to more than 80% of the liquid content. At the same time, in order to enhance the separation effect of oil and mud, it is necessary to add chemicals in the process of homogeneous mixing.
3) Separation module – GN Solid Control uses different separation equipment to separate oil and water from the sludge step by step. High G force shale shaker, 2-phase decanter centrifuge and 3-phase disc centrifuge are used in the Separation module.