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Tag Archives: High quality centrifuges

Large stock of DCLW355-1258VFD Centrifuges enjoy discount sales

DC Solid control is a professional manufacturer of mud cleaning equipment for many years. 80% of our business are export to abroad based on our cost effective product. To show gratefulness to the registered customers, we bring out a model of decanter centrifuge of DCLW355-1258 VFD centrifuge for discount sales.

This model of decanter centrifuge is a professional unif for oil& gas drilling mud cleaning system. It is used as the fourth stage mud separation in the whole cleaning system.

centrifuge

The drilling mud decanter centrifuges can separate fine particles well,for separating 5~7μm particles in drilling mud,usually use medium speed decanter centrifuge,for less then 2μm,usually use high speed decanter centrifuges.

decanter centrifuge

Main parameters of the DCLW355-1258 VFD centrifuges:
1. Drum length and diameter: 1258mm and 355mm.
2. Main and back motor: 30kw and 11kw
3. Max treating capacity: 45m3/h
4. Bowl speed(VFD): 0~3400rpm
5. Dimension: 2900×1500×1650mm
6. Weight: 3000kg

Simplified solid control system, DCLW centrifuges with the advantages of low energy consumption , lighter working load, and the purification efficiency increased by 30% than original.

 

A decanter centrifuge from DC Machinery are painting now

The decanter centrifuge ordered by my Russian client are painting now this morning. It is used for oil drilling site to process the drilling fluid and located after the desilter.

Drilling rig centrifuges have got large development on both structure and functions. Especially there are many manufacturers design centrifuges according to drilling mud features or property. Then the centrifuge become many models and types used in various drilling projects.

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Actually, in drilling rig solids control system centrifuge is the most complicated one. It is rather difficult for operator get leagal operation, etc. However, in long term its important position is following shale shaker subsequently..

So DCLW centrifuges have adopted new technology on conveyor. Such as mount carbon tungsten alloy plates by welding and bolts. This increase centrifuge conveyer usable life and whole equipment duration.

You are welcome to contact Tangshan Dachuan Machinery to get more detailed infos of different type centrifuges, we will supply our best service for you.

3-Phase centrifuge produced by DC Machinery

DC Machinery is a profession manufacturer of design and produce two and three phase centrifuges. The DCLW series is a screw decanter centrifuge with a special specification. It enables three-phase separation of Oil, Water and Solid matter based on previous two-phase separation using the difference in specific gravity between solid and liquid.

centrifuge

Three-phase centrifuge separation by unique structure:

Separation of light and heavy liquid has been made possible by adopting the special structure of a liquid outlet dam. We also have various options available, and have good advancements for palm oil manufacturers with our high-G and anti-wear specification machines.

Working Principle:

Using two different size dams for liquid outlets, light liquid and heavy liquid separated using the centrifugal effect can be discharged separately.

centrifuge

Specifications:

1. Disposal volume is in the case of press water for fish meal, and can be altered according to the liquid disposed.
2. Motor Output can be altered according to the adopted centrifugal effect. *= On the condition of no common bed

You are welcome to contact DC Machinery to get more detailed info, we will supply our best service for you.

What Is The Working Principle Of Decanter Centriguges

The centrifuge is fed through a stationary pipe, which is inside a hollow shaft connected to the rotating screw conveyor (scroll.) There it enters a feed compartment and is accelerated through feed slots into the rotating bowl. Once inside the bowl, centrifugal forces accelerate the heavy solids, where they settle on the bowl wall. The lighter liquid will fill the bowl to the level of the effluent dam (weirs).

decanter centrifuge

The conveyor is connected to a gearbox and turns slightly slower than the bowl. Since it is turning slower and the helix is angled toward the small diameter (conical end) thus the solids are then conveyed along the bowl wall to the solids discharge end and discharged there.

The liquid flows around the conveyor and exits over effluent dam located on the large diameter end of the bowl. Lighter Solids, which did not settle to the inside diameter of the bowl (floaters), are carried out with the liquid over the effluent dams.

centrifuges

The Effluent dams are adjustable and control the amount of liquid inside the bowl. The Effluent Dam diameter is normally larger than the solids discharge diameter thus creating a Drying section at the Solids discharge end called a beach. The larger the beach the dryer the solids discharge however this will reduce the amount of liquid inside the bowl.
A larger the amount of liquid usually results in a cleaner effluent.

We can offer many different drive systems to operate decanter centrifuge form fully automatic Frequency controlled units to a simple one speed setup.

Based on your process requirements we can thus optimize your decanter selection.

Typical areas of use of decanter centrifuges

The decanter centrifuge produced by DC Machinery are horizontally positioned centrifuges with a solid wall drum (therefore also called solid wall screw centrifuges). The drum is cylindrical-conical, it consists of a longer cylindrical part (the so-called clarifying zone) and of a conical part (the so-called dry zone). The material to be processed is fed via a so-called feed tube into the drum, where, due to the centrifugal force the solid material particles sediment on the drum wall.

Decanters (decanter centrifuges) are “solid material oriented” centrifuges which can process liquids / suspensions with high solid material contents (up to ca. 60% by volume).

centrifgues
Typical areas of use are:

Clarification of liquids and suspensions
Thickening of sludges
Dehydration of sludges and suspensions
Washing
Classification (wet classification of solid materials in a suspension according to grain size)
Extraction
Separation of 3-phase mixtures (two fluid phases, insoluble in each other, and a solid material phase) etc.

Three phase decanter centrifuges from DC solid control for sale

To be as a leader of wasterwater treatment company. DC Solid control developed a 3 phase decanter centrifuge used in oil and gas field and all kinds industries wastewater treatment projects.

The three phase decanter centrifuge. It is made of cone drum, spiral unloader, differential system, bearing base, engineer base, main motor, back motor and electrical system.

decanters

Working principle of 3 phase decanter centrifuges:

Under the great centrifugal force of the high rotatry speed of the centrifuge can make the material continous used in 24 hours. Main motor drive the drum through the belt will produce a rotation speed differential based on the braked differential drive the back motor to realize the material hydration and pushing function. The centrifuge have the function of differential speed auto control, because of the feeding material content the solid ration maybe have fluctuate, use the differential speed control system to ensure the differential speed is steady to make the better separation effect.

centrifuges

The heavy and  light liquid phase is discharged respectively from the heavy and light liquid phase outlet to reach the liquid, liquid and solid three phase separation. The centrifuge have the ideal seal properties, material dehydration working is in a state of full sealed, and make the working environment is clean.

All of DC Solid control decanter centrifuges adopt the international advanced special structure design. The centrifuge has the advantages of superior quality and efficiency, with larger treating capacity , better separation effect and easy to operate.

The machine has the certificated of ISO9001-2000. Mechanical properties is higher than JB/T502-2004《spiral sedimentation unload centrifuge》standard.

Why more users choose DC centrifuge for wastewater treatment

Horizontal decanter centrifuge has the advantages of good separation performance, well-adapted, can be automatic continuous operated, exercise intensively is small, small footprint and lower maintenance cost. So the decanter centrifuge had a rapidly development recent years, which can be widely used in industrial wastewater and municipal wastewater process field. Such as, printing, light industry, chemical industry, chemical fiber, leather making, mining, pharmaceutical, brewing, food, coal dust, electroplating. Our company combines the decanters structure of Sweden, Germany, Japan and users request to adopt advanced manufacturing technique to get the domestic advanced level.

structure of decanter

Main feature of the decanters centrifuge compared with others:

1 Separation factor is high: Max 4000.

2.Ration of length and diameter is big: Max 4.2.
3. low energy consumption: 1/3~1/2 of the same product.
4. Smoothness Of Operation : Parts precision dynamic balancing and the whole set machine work dynamic balance, vibration strength of the decanter is below 5mm/s, is fall far below 《Technical condition of decanter centrifuges》, 7.1mm/s.
5. Low noise: less than 85Db(A).
6. Operating reliability: DC company decanters differential mechanism adopt planetary gear transmission in high speed, and adopt pin-cycloid planetary gearing in low speed to improve the working reliablity. Spiral drive main bear use roller bearing and the structure of the thrust ball bearing which can improve the bear ability of the Axial force.
7.Wear-resistant treatment: The touching part of our company is made of stainless steel and superior alloy steel, the blades of screw pusher paint abrasion-resistant alloy or spectacles special cemented carbide.
8. All kinds of models: The diameter series of the decanter produced by our company are 250、350、450、550, slenderness ratio is 2. 3. 4. ect.

decanters

DC decanters widely used in oil, chemical, light industry, mining, metallurgy, food, environmental protection and ect, which can totaly meet the requirements of dehydration of solid, and liquid phase.

3-Phase horizontal centrifuge China supplier

The 3-Phase Separating Decanter is a centrifuge in which two liquids of different densities are separated from each other. At the same time solids are separated and discharged. 3-Phase centrifuges are widely used in oilfield at present.

A three-phase centrifuge is capable of three distinct phase separations in a single pass. Three-phase centrifuges are uncommon in the petroleum industry, but have been used in other industries. The oil field separation is a far more difficult problem, because the oil field mixture is a solid-stabilized emulsion produced from a liquid-solid. This 3-phase separation horizontal decanter centrifuge is primarilly employed for solid-liquid-liquid separation, namely the simultaneous separation of one solid phase and two immiscible liquid phases with different densities. The premise is that the solid phase is the heaviest.

3-phase centrifuge

Separation process of 3-phase centrifuges 

The feedstock enters the decanter through feed tube and flows into the centrifugation space through the distributor. The conveyor screw transports the solids to the solids discharge. The level of the liquid can be adjusted by fitting regulating rings or disks of the required inner diameter. Separation of the two liquid phases takes place in the separation zone, whereby the light phase flows towards the bowl axis, and the heavy phase towards the bowl wall.

Working principle

Under the centrifugal force, the material will be formed with three relatively stable layers including solid phase layer, as well as heavy and light liquid layers, from the bowl wall to the inside. The solid phase will be driven to the small end of the rotary bowl by the screw conveyor and then will be expelled from the slagging hole. The heavy and light liquid phases will flow towards the big end of the rotating bowl along passages among screw flights and then will be drained from different outlets. Therefore, the continous 3-phase separation achieved.

DC Machinery is a specialized 3-phase separation horizontal decanter centrifuge manufacturer and supplier in China. We offer a vast range of products, including high speed centrifuge, 2-phase separation horizontal decanter centrifuge. If you have any requirements, please contact us.

2-Phase decanter centrifuge in chemical and mineral processing applications

The 2-Phase Separating Decanter is a centrifuge in which the clarified and separated oil phase is gravity discharged on the decanter’s liquid side while the heavy liquid phase leaves the decanter together with the solids. Which is popularized used in waste water process, oil& gas industry, chemical and mineraltextile industry. Following the detail introduction of decanter used in chemical and mineral processing applications.

This decanter centrifuge has been customized for clear clarification and dewatering in chemical and mineral processing applications. The solid-wall bowl has a cylindrical section for efficient clarification of the liquid and a conical section for drying the solids. Due to the centrifugal forces, the solids are flung onto the inner bowl shell and are transported by the scroll to the solids discharge.

decanter

Then the clarified liquid is discharged under pressure by use of a centripetal pump. The housing consists of a frame with supporting feet, protective plates and catchers for the discharged phases.

centrifuges

Features & Benefits:

1. All product-contacting parts are made of high-alloyed duplex steels, super duplex steels. Depending on the application, the gaskets are made of different brands.
2. Chemical cleaning after separation possible.
3. Explosion-protected centrifuges available:

You are welcomed to contact us to know more about the decanter centrifuge. We promise provide you the most professional and advanced technical service.

Characteristic introction of decanter centrifuge

The word “ decanting means pouring of liquid so slowly that any sediment in the bottom remains undisturbed.
The centrifugal force created by the centrifuge depends on the diameter and Rpm of the bowl. Use the following formula to calculate
“ G” force:  G=(RPM)2 (0.0000142) (Diameter of bowl, in ).

The performance of decanter centrifuge for a given mud depends on the following factors:
1. The G’ exerted on the fluid.
2. The retention time of the fluid in the centrifuge.
3. Conveyor speed.

decanter

The following factors are considered in different designs and applications:

1. Bowl diameter
2. Length of bowl (increases retention time )
3. RPM operating range
4. Conveyor speed
5. pool depth

The rate at witch a particle will settle is directly proportional to the force of gravity , the square of its diameter and the difference in density between liquid and the medium in which it is settling. It is also indirectly proportional to the viscosity of the liquid.

In weighted mud, the application of centrifuges is some what different. In general, two centrifuges are used. One unit is used to remove the weight materials and the second one is used to remove drilled solids. The clean mud is then returned to the achieved system where it is re- united with the recovered weight materials.

 

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