solids liquid separation

Recently one set of vibration shaker for liquid solids separation are shipped to environmental service company.

It is consist of 2 mud tanks, each tank with 1 unit of vibration shaker, 1 unit of centrifugal pump, 1 unit of mud agitator, 1 ea lighting, walkway, stairs, guard rails, valves, and pipelines, etc. accessories. The vibration shaker with water spray system to prevent solids blocking of the screen. For different applications, the shaker feeding system have different options as weir feeder, top box feeder, hopper feeder. In this system the shale shaker feeding way is top box feeder through pipelines on the top. The centrifugal pump’s impeller and pump casing are made of hard ductile iron alloy for better abrasion resistance, to protect the centrifugal pump impeller and pump casing, the shale shaker should separate most of the coarse solids from the liquid and the discharged solids should be as dry as possible. The shaker screen installed on the shale shaker is composite material frame shaker screen for longer working life, especially for the slurry with high solids content. The shaker screens are produced by GN solids control and comply with API RP 13C standard, the wire mesh is made of stainless steel 316L, the frame are made of composite material for longer storage life and durable working life.

For oil &gas drilling application, there are 2 vibration modes for option, linear motion and progressive elliptical motion to meet different requirement for their drilling fluid.
For solids liquid separation application, normally we only need linear motion with high G force up to 8.0 G for better drying performance.
The further treatment equipment after shaker is decanter centrifuge with dewatering unit, to separate more fine solids from the fluids and get pure water, most of the fine solids can be separated out up to 1 micron.

Recently one set of small solids liquid separation unit and one package of decanter centrifuge are shipped to Europe client.
The technical configuration of the small solids liquid separation unit is as below:

1) 1 unit of 2 panel shale shaker GNZS752F installed 2 pcs composite material frame shaker screens, we can produce shaker screen from API 20 to API 300 comply with API RP13C standard. The shale shaker is to separate coarse solids from the fluids and reduce the solids content.
2) 1 unit of decanter centrifuge GNLW223D-VFD with feeding pump, the max capacity is 130L/min, normal capacity for waste water is 100L/min, the bowl length is 26.4 inch with ratio 3.

3) 1 unit of mud tank to install the decanter centrifuge and shale shaker on top, the feeding pump is installed on the skid of the tank.
4) One set of electric control system to control all the motors, all the equipments are labled and certified with CE.

Besides the solids liquid separation unit for drilling, the client also required one package of decanter centrifuge GNLW224E, the bowl diameter is 9 inch (220mm), bowl length is 36.4 inch (924mm), the ratio of bowl length/ bowl diameter is 4.2, which is much bigger than GNLW223D, which with bowl length 670mm/ bowl diameter 220mm =3. The fluids will stay in the bowl for longer time and the discharged water is more clear. The max bowl speed is 5000rpm, the typical bowl speed is 0 ~ 4500 rpm. The max G force is up to 3077G, the typical G force is 2492G, with main motor 11KW, back drive motor 5.5KW, the gearbox ratio is 95:1, the gearbox torch is 1400 N.M. The decanter centrifuge are installed on the frame for convenient lifting and transportation, the catch tank under the decanter centrifuge to collect the discharged fluids.