2 Phase Decanter Centrifuge
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2 Phase Decanter Centrifuge

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What is 2 phase decanter centrifuge:


The 2-phase decanter is set up like the diagram below. By setting the weir plates (dam plates) at a correct relative to the solids outlet, equilibrium is found where the solids and enough water are expelled from the solids and the oil flows out the oil outlet

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Operating principle:

The purpose of separation is to separate out substances with different mass ratios from mixed fluid.Separation forms included solid-liquid separation,liquid-liquid separation and liquid-liquid-solid separation.

When mixed fluid enters rotating bowl of centrifuge through feed tube ,solids with larger density would rapidly deposit on inner wall of the bowl,forced by centrifugal acceleration.Then spiral pusher pushed deposited solids to taper end of the bowl,and discharges them out of centrifuge from residual outlet.Meanwhile ,liquid phase with smaller density forms a liquid ring layer and discharges from bowl through overflow port,the bowl and spiral pusher run at a high speed simultaneously ,for there exists speed discrepancy,deposited solids on the wall of bowl could be conveyed to residue outlet by spiral pusher.This separation process carry out continuously.


Separation technique

Feeding-gravitational separation-liquid discharge-sediment discharge.

Separation effect factors Centrifuging factor ,length to diameter ratio of cavity ,depth of fluid pool.


Field control

Bowl rotating speed ,rotative speed difference,between,spiral pusher and bowl depth of liquid pool.


Scope of application:

Application fields

1. Food

A flesh processing,aquatic products process and edible protein recovery;

B Extract plant protein from soybean,oily seeds and leguminous plants;

C Recovery of brewing leach liquor malt and yeast

D Treatment and recovery of wine lees liquid;

E Extract of instant coffee and tea;

F Clarification of palm oil,olive oil and seed oil;

G Extract juice from fruits ,berries and vegetables;

H Recovery of refined pectin;

I Clarification of grape juice and grape wine.


2. Environmental protection

Drilling mud ,industrial effluent ,waste water of municipal works,fertilizer,organic waste water,paint sludge,plastic

particles,gravel washing water,waste water in steel-making ,flue gas desulfurization,sewage sludge treatment of waterworks.


3. Petroleum and chemical industry

A Processing of kaolin and calcium carbonate,production of bentonite and titanium dioxide;

B Exploration of petroleum oil,natural gas,crude oil refining and related industries,additive of lube oil and waste oil recovery;

C Intermediate products and final products of organic chemistry industry;

D Thermoplastic materials,includes PVC,polypropylene,polystyrene,synthetic rubber and fiber;

E Inorganic chemical industry ,includes bleach,acid,silica products and fertilizers;

F Treatment of spent wash and molasses fermentation residues;

G Extraction of starch from wheat,corn ,cassava and potato;

H Waste liquid recovery and recycling from above industries.


Other fields

Pharmaceutical intermediates,salts and manures,etc.


Specification

Model

Diameter(mm)

Lenght(mm)

Max speed

L/D ratio

G-force

Capacity(m3/h)

Main motor power(Kw)

Weight(kg)

Dimension

(mm)

LW250*1000

250

1000

5000

4

2722

0.5-5

7.5

950

2120*1250*680

LW300*900

300

900

4200

3

2964

1-6

11

1160

2150*1300*900

LW300*1200

300

1200

4000

4

2784

2-6

11

1350

2450*1300*900

LW355*1160

355

1160

3600

3.3

2576

2-8

15

1400

2470*1350*830

LW355*1460

355

1460

3600

4

2576

2-10

15

1800

2750*1350*830

LW400*1200

400

1200

3200

3

2294

3-12

18.5

1800

2730*1600*1080

LW400*1600

400

1600

3000

4

2016

3-15

22

2000

3130*1600*1080

LW450*1800

450

1800

2800

4

1976

4-25

37

2500

3320*1700*1130

LW500*2000

500

2000

2800

4

1750

5-35

45

4000

3520*1800*1170

LW530*1855

530

1855

2600

3.5

2006

5-38

55

4680

3885*1350*1600

LW530*2120

530

2120

2400

4

1709

5-40

55

4800

4150*1350*1600

LW550*2000

550

2000

2800

4

2414

6-40

55

5700

4570*1380*1600

LW650*1950

650

1950

2200

3

1761

6-45

75

5000

4840*1510*1720

LW650*2600

650

2600

2000

4

1456

6-65

90

6000

5490*1510*1720

LW720*2160

720

2160

2000

3

1612

7-80

120

6000

5200*1600*1800

LW760*3040

760

3040

2000

4

1306

7-90

120

12000

3100*1600*1800

LW800*2400

800

2400

1800

3

1451

20-100

150

12000

5820*2000*1300

LW800*3200

800

3200

1800

4

1451

20-120

150

13000

7100*2000*1300


Main technical features

1. Industrial design

Whole machine set design follows concept of advanced industrial design,ensures stability,functionality and safety of whole machine.Also effectively absorbs shear force of dynamic load during operation.


2. Effectively ease resonance during rotating of bi-rotor

When centrifuge works,there is no obvious first-order and two-order resonance regions within designed speed range,meanwhile ,whole vibration intensity of bearing seat is definited within 2mm/s-4mm/s.All of this eliminates extra fatigue damage to components and assembly units from high frequency vibration during operation and sudden vibration when shut down.


3. Thoroughly eliminate phenomenon of liquid ring stalling

Phenomenon of liquid ring stalling happens during heavy duty boot or shutdown process of complete set machine,especially for LW550 and even larger models,It would makes bounce or wild shake,causes extra impact fatigue damage to main bearings,screw bearings and inner parts of rotary bowl.Fortunately ,our engineers have solved this problem thoroughly.


4. Unique technique adopt in main component work-blanks

The manufacturing methods of main component work-blanks are adopt centrifugal casting technique and overall mould-making forging technique,thoroughly avoid risks such as inter-granular corrosion and relaxation of residual stress release in welding joint.


5. Main bearing selection

We use origin bearings of international first-line brands such as SKF,FAG and so on.


6. Constant temperature detection

All fashioning components and assembly units are detected in constant temperature condition,to make sure of actual processing quality meets the requirements of designed precision accuracy.


7. Inter-change ability

Whole machine physical design and processing technique adopted in critical position,ensure all assembly units and bowls of the same centrifuge model interchangeable.It is not only easy to maintain ,but also greatly improve the reliability and safety of equipment.


8. Simplyand safely in bearing disassemblement

One layer of oil film is injected into contact surfaces between bearing and work-piece by high-

pressure,during disassemblement bearing from the machine.which would fundamentally eliminate friction within different parts.As a result,it would reduce 90% of pulling force and lower the risk of damage to high-precision parts when disassemble bearing.


9.Main bearing lubrication system

There are two kinds of lubrication system for specific product models :


A thin oil lubrication

* Oil pump offers an uninterruptedly power to ensure oil works circularly;

* Jet oil lubrication constantly clean and lubricate bearings and reduce temperature;

* Oil filter system ensure lubricant’s cleanliness;

* Oil pressure energy storage system ensure lubrication pump offers an extra oil supply(the pressure is no less than 0.4Mpa) for 5-6 minutes,when power fails accidentally;

* Constant temperature system is available.


B grease lubrication

* Adopt a grease with properties of extreme pressure resistance ,oxidation resistance ,abrasion resistance,water scour

resistance,corrosion-proof and high temperature resistance.

* Optional automatic grease system fills grease on main bearing at designed hours and quantity.


10. Main bearing BH device (patent design)

There are two spare safe bearings at either end of main bearing.When machine works well,they keep certain clearance from bearing inside track to chief axis.When unexpected condition occurs,main bearing got damaged or circle center deviation causing an amplitude of vibration reaches to designed clearance,safe bearings begin to work as main bearing Meanwhile,computer automatic control system would get a feedback of abnormal vibration value on bearing position immediately then activates emergency shutdown and goes a smooth shut down.This system protects machine free from damaging and ensure production safety.


11. GSRL feeding device (potent design)

New design of internal spiral core tube has got following achieves.Without reducing centrifugal acceleration,shorten triangle belt's traction time,reduce disorder of swirling flow and extend separation time.Meanwhile increases inner working pressure of centrifuge,and restrains liquid foaming.


FAQ

Q1.What's your advantage? Why we choose you?

A:1) More than 50 years experience of centrifuge & separator production and R&D.We have the most professional techniques and team. More advantage in price

2)Great production capacity Sustainable Supply . According to customer requirements, We support the customized include package.

3)We use famouse good quality materials and the best production process


Q2.What's the Payment?

A:T/T would be better with quick transfer and few bank fees. LC could also be accept, but the

procedure is complex and the fee is high. You can also use Western Union and Paypal.


Q3.Are you a factory or trading company?

A:We are a professional manufacturer. We are warmly welcome clients from worldwide to visit our factory and cooperate with us.


Q4.How long is the warranty period ?

A:12 months.


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