Sep 06

Dewatering technology is greatly use for chemical separation of the solids phase form the liquid. By using some chemicals, the fine particles of solids flocculate into larger ones and to be separated out from the liquid phase. Take the oil and gas drilling mud industry as example, there are 2 main methods to be used, the dewatering centrifuge and the filter press. Seen from their outlook and working principle, they are quite different, but which to choose and why to choose is not only based on the first look, we need a detailed calculation.

  1. Purchasing cost. The cost for buying each of them is no much different, and also comparing with future consumption, this cost seems less important.
  2. The chemicals consumed: because of the high speed and high G force of the decanter centrifuge, no much chemical is needed. But in case of filter press, more chemicals in need for fulfil the work.
  3. Water usage amount: the decanter centrifuge need to be flushed only after continuous operating and the water consumption for each time is 3-4 cbm per day, but the filter press need to be flushed all over after usage, need around 150 cbm per day. In some water scarce place, this factor has to be taken into consideration.
  4. Human force needed: it is not a heavy work to operate or observe the operation of the decanter centrifuge, so one person for one centrifuge is enough. In case when several centrifuges are at same place, even one operator can work for them all. But in case of filter press, one filter press need at least 2 persons to run it.
  5. Spare parts: the spare parts for decanter centrifuge is less than the filter press.

GN centrifuges

GN Solids Control is professional in decanter centrifuges, GN has decanter centrifuges from 9 inch bowl diameter to 22 inch bowl diameter and now GN decanter centrifuges are not only used for oil and gas industry but also for other industries. For more information, welcome to contact GN freely. GN solids control produced mud handling equipments and mud tanks are mainly used for cleaning and recycling the used driling fluids from the well bore. The mud handling equipments range including: Shale shaker, mud cleaner, desander, desilter, vacuum degasser, chemical mixing unit, Mud Gas Separator, mud agitator, bottom mud gun, shear pump, decanter centrifuge, vertical G cuttings dryer.

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