Disc Separator
1. Application
The high-speed centrifugal separator is intended for marine and land applications. It is specifically designed for cleaning of mineral oils from water and solid particles (sludge). The cleaned oil is discharged continuously, while the sludge is discharged at intervals.
The separator handles the following types of lubricating oils and low viscosity fuel oils:
Distillate (viscosity 1.5-5.5 cSt/40℃)
Marine diesel oil (viscosity l3 cSt/40℃)
Intermediate fuel oil and heavy fuel oil (viscosity 30-380 cSt/50℃)
Lubricating oil of R & O type, detergent or steam turbine.
The separator can be operated either as a purifier or as a clarifier. When operated as a purifier the separator discharges the separated water continuously.
When the oil contains only small amounts of water the separator is operated as a clarifier, discharging the water together with the solid particles.
The separator has to be installed together with devices for control of its operation.
2. Separating Function
(1) Liquid flow
Separation takes place in the separator bowl to which unseparated oil is fed through the inlet pipe. The oil is led by the distributor towards the periphery of the bowl.
When the unseparated oil reaches the slots of the distributor, it will rise through the channels formed by the disc stack where it is evenly distributed into the disc stack.
The oil is continuously separated from water and sludge as it will flow towards the center of the bowl. When the cleaned oil leaves the disc stack it rises upwards and enters the paring chamber. From there it is pumped by the paring disc and leaves the bowl through the outlet.
Separated sludge and water move towards the bowl periphery. In purification separated water rises along the outside of the disc stack, passes from the top disc channels over the edge of the gravity disc and leaves the bowl into the common sludge and water outlet of the separator.
Heavier impurities are collected in the sludge space outside the disc stack and are discharged at intervals
through the sludge ports.
(2) Water seal in purification
To prevent the oil from passing the outer edge of the top disc and escaping through the water outlet, a water seal must be provided in the bowl. This is done by filling the bowl with water through the water inlet, before unseparated oil is supplied. When oil feed is turned on the oil will force the water towards the bowl periphery and an interface is formed between the water and the oil. The position of the interface is determined by the size of
gravity disc.
(3) Displacement of oil
To avoid oil losses at sludge discharge, displacement water is fed to the bowl. Prior to a discharge the oil feed is stopped and displacement water added through the water inlet. This water changes the balance in the bowl and the interface moves inwards to a new position, increasing the water volume a new position, increasing the water volume in the sludge space. When the sludge discharge takes place sludge and water alone are discharged.
Sludge discharge occurs while the displacement water is still flowing. A new water seal will therefore establish immediately afterwards. The oil feed is then turned on again.
(4) Gravity disc
In the purification mode, the position of the interface can be adjusted by replacing the gravity disc for one of a larger or smaller size. A gravity disc of a larger size will move the interface towards the bowl periphery, whereas a disc of a smaller size will place it closer to the bowl centre.
The sizes of the gravity discs are normally stamped on the discs.
(5) Clarifier disc
In the clarification mode, the gravity disc is replaced by a clarifier disc which seals off the water outlet. In this case no water seal is required and consequently there is no oil/water interface in the bowl. The clarifier disc is an optional disc with a hole diameter of 40 mm. This disc is not shown in the nomograms.
3. Main Technical Parameters
The technical parameter is optional, we can accommodate your requirements, please don’t hesitate to contact us!
Maximum density | feed sediment | 1100kg/m³ 2332kg/m³ |
Power consumption | idling | 0.9 kW |
| running (at max. capacity) | 2.0 kW |
| max. power consumption | 2.8 kW (at starting-up) |
Bowl speed, synchronous | 9512/9307 | rev/min. 50Hz/60Hz |
Motor speed, synchronous | 3000/3600 | rev/min. 50Hz/60Hz |
Gear ratio (pulleys) | 130:41 (50 Hz) |
|
| 106:41 (60 Hz) |
|
Starting time | 3.5 – 4.5 minutes |
|
Stopping time | Running down without brake | average 19 minutes |
| With brake | min. 3 max. 4 minutes |
Maximum running time without | Empty bowl | 180 minutes |
flow | Filled bowl | 180 minutes |
Sludge volume total/efficient | 1.0 / 0.3 litres |
|
Bowl liquid volume | 2.2 litre |
|
Bowl inner diameter, max | 218 mm |
|
Fixed discharge volume | 1.2 + 0.1 litres |
|
Lubricating oil volume | 0.5 litre |
|
Sound pressure level | 75 dB(A) |
|
Sound power | 8.9 Bel(A) |
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Vibration level | New separator | Max. 5.6 mm/sec |
| Separator in use | Max. 9 mm/sec |
Weight | Separator without motor | Net weight approx. 193 kg |
| Motor | 21 kg |
| Complete bowl | 37 kg |
Motor power | 3 Kw |
|
4. Certificates
ABS, BV, DNV-GL, KR, RINA, NK,USCG, and CCS class certificates approvable.
1. Quality Assurance
All our products are strictly manufactured in accordance with the production standards. Before being issued the product quality certification, all products are inspected and accepted by the technical inspection department of the manufacturing plant.
2. Product Customization Service
Our company can supply both standard and non-standard products to meet your various needs. We can customized products according to your drawings.
3. Providing Classification Society Certificates
We can supply various certificates of Classification Societies: CCS, ABS, BV, DNV-GL, LR, NK, KR, RINA, RS etc.
4. Excellent Pre-sale and After-sale Service
Our salesmen are adhering to the trading principles of being honest and trustworthy, fair and equitable to provide excellent and satisfactory service for our customers.
1. Summary
HI-SEA MARINE is one of the earliest professional suppliers of marine and offshore equipment since 1996. Our headquarter office is located in the important industrial city – Chongqing, China. We have an efficient & specialized international sales team, and have established a long-term co-operation relationship with many shipyards, wholesalers, traders, engineering companies.
ABS, BV, LR, NK, DNV-GL, KR, RINA, CCS, IRS classification society certificates and some special approvals like COC, CE, TUV, ISO can be provided. Meanwhile, our company is one of the first batch Alibaba co-operation companies certified by BV Class Society, and obtained the ISO9001 certificate issued by DNV-GL.
As continuous expansion and development, our business has involved in the fields of Oil and Gas, Dredging, Aquaculture Industry, Building Equipment & Material, Universal Machine, Mining, etc.
• Marine Equipment (Deck equipment, Mooring equipment, Outfitting Equipment, Valve and Pump, Lifesaving & Fire Fighting Equipment, Lifting & Rigging, Ventilation, Shafting & Rudder system, Thruster, Auxiliary Equipment, Electrical Equipment, Materials, etc.)
• Offshore Equipment (Mooring Buoy, Steel plate anchors, R3,R4 Chains etc.)
• Aquaculture Industry (Float, Anchor, Chain, Rigging, Rope, Fishing Net, Rubber Pipe, etc.)
• Industrial Equipment and Hardware (Pipe Fitting, Oil Tank, Cover Head, Round-link Chain, Cement Mixing Equipment, Container House, Paint, etc.)
• Dredging Equipment (Rubber Hose, Cutter Head & Teeth, Spud, etc.)
• Dock Equipment (Buoyancy tank, Bollard, Quick Release Hook, Fender, etc.)
• Petrochemical Equipment and parts (Loading Arm, Boarding Ladder, etc.)
Company spirit: Integrity, Professional, Efficient and High Quality!
2. Details
Company Office
Customer's launching ceremony
Company Activities
China