Tag Archives: Drilling Fluid Centrifuges

DCLW series Industry Decanter centrifuge is widely used in wastewater treatment, crude oil recovery, coal tar recovery, palm oil recovery, fruit juice production, protein production, DC Solid control production, starch production, food waste treatment, etc. with VFD, and PLC Control, can choose 2/3 phase separation.

Our Centrifuge Drum and spiral parts titanium welding with 304/316 / 316L/321 stainless steel, stale performance and long service, warmly welcomed by the customers at home and abroad.

decanter centrifuge

DCLW Decanter centrifuge is driven by two motors. The main motor drives the drum and the outer casing of differential through belts while the auxiliary motor, after the differential shifting speed, drives the spiral propeller. This will make the drum and the spiral propeller rotate in the same direction with a certain differential speed.

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Decanter centrifuge are used to process unweighted and weighted, water-based and oil-based drilling fluids (muds). Mechanical energy is utilized to increase the gravitational force exerted on solids that are present in the mud system.oilfield Decanting Centrifuge are able to apply over 3,000 G-forces on the liquid/solids mixture, which separates the heavier solids from the lighter solids. Additionally, high G-forces separate fine solids from liquid.

 

Decanter centrifuge are used to process unweighted and weighted, water-based and oil-based drilling fluids (muds). Mechanical energy is utilized to increase the gravitational force exerted on solids that are present in the mud system.

Oilfield Decanting Centrifuge are able to apply over 3,000 G-forces on the liquid/solids mixture, which separates the heavier solids from the lighter solids. Additionally, high G-forces separate fine solids from liquid.

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Last week, DC Solid control company shipped 3 sets of Middle decanter centrifuge to Saudi Arabian used for oilfield to treat unweighted drilling fluid. The model of the three sets decanter centrifuges are DCLW450-1000. And the main specification as below:
Drum diameter: 450mm
Drum Length: 1000mm
Drum Speed/rpm: 1480rpm
Main Motor Power: 22kw-IV class
Back Motor power: 5.5kw-IV class
Max treating capacity: 40m3/h
Separation factor: 548G

centrifuge

Such decanter centrifuge applies to solid liquid separation of suspension liquids with solid phase particle equivalent diameter ≥ 3μm, weight concentration ratio ≤10%, volume concentration ratio ≤70% or solid liquid density difference ≥0.05g/cm . HSS has different series of decanter centrifuges with bowl diameter from 220 ~ 1100mm. The machine can be also sorted by bowl type, such as thickening, dewatering, classifying, clarifying etc., to be fit for different separations.

Please contact DC Solid control to get more detailed information about all kinds of decanter centrifuges.

Before hydrocyclones and centrifuges became available for drilling applications, shale shakers and dilution were the only means of controlling the solids content of drilling fluids.

decanter centrifuge

Yesterday, DC Solid control company shipped 3 sets middle speed drilling fluid centrifuge to Russian drilling site. Centrifuge used in drilling solids control is the decanter type. Almost the centrifuge used at drilling site are horizontal type. There are bowl, drum, conveyor, motor, control panel consisted in centrifuge assembly. Of course, also the support base or base frame.

drilling fluid centrifuge

Decanting centrifuge in drilling fluids system is used after desilter cone or mud cleaner. It can handle the solids ranged 2-7 microns. There are middle speed and the high speed one, the fixed frequency or VFD one. Treating capacity / handling rate varies along with centrifuge size. Usually, it is from 30~60m³/h. We can select screw pump or slurry pump as feeding pump.

Please find more information on DC solids control site. Or you can contact us freely. DC provides the high quality solids control decanter centrifuge,

In many cases the recovered solids from the hydrocyclone are fed to a dewatering shaker that is outfitted with as fine a screen as possible. It is extremely important to remember to use separate compartments and centrifugal pumps for each size hydrocyclone. Each stage of hydrocyclone should be sized out to process 125 to 150 percent of the volumetric circulating and dry tonnage rate to allow them to work more efficiently and reduce the likelihood of plugging. Cleaned fluid should always be discharged downstream.

The trenchless industry is seeing an increased demand for high-speed centrifuges to help remove colloidal size solids that can wreak havoc on a mud system if they are not removed. A centrifuge is a high speed, high “G” force rotating bowl and scroll assembly capable of separation down to 5 to 7 microns without chemical enhancement.

centrifuge

In this process, slurry is fed through a feed tube into the rotating bowl, where centrifugal force propels the ultra-fine solids outward against the interior wall of the bowl. A rotating conveyor in the center of the bowl drives the recovered solids toward the solids discharge ports, where they are expelled into a chute. Liquid is retained in the pool and discharged through the liquid discharge ports at the opposite end of the bowl.

If desired, polymer injection or “dewatering” units can be integrated with centrifuges to remove solids down to 0um. Polymer injected in between the feed pump and inlet of the centrifuge will flocculate the reactive ultra-fine solids, forming a heavy enough mass for the centrifuge to capture. If done properly, the result can be a semi-clear effluent that may be more readily disposed of or returned to the system. This can help drastically reduce or eliminate expensive drilling mud disposal.

The Horizontal Decanting centrifuge (Decanter) has a vast field of applications in various Processes where a liquid and a solid phase have to be continuously separated.

DC Solid control provides 24 hour nationwide support to our customers with our dependable field service technician group. Our field service technicians have years of experience and training on servicing all makes and models of centrifuge equipment. Our team of well trained centrifuge technicians and mechanics are prepared to repair most industrial centrifuge related equipment on the market.

decanter centrifuge

Centrifuge Maintenance Programs

We also cater to our customers by offering centrifuge equipment preventative maintenance programs. Our individually tailored preventative maintenance agreements are designed to ensure the optimum performance of your machine, as well as, to prevent costly machine repairs and plant downtime. Our years of service and training have allowed our centrifuge technician repair team to gain a working knowledge many types of industrial centrifuge equipment.

Centrifuge Annual Service Program

We also provide additional savings to our customers with our service kits recommended for each centrifuge service. Our experience working with centrifuge equipment has proven that an annual inspection and repair has eliminated costly downtime, so take the time to call us and we will be glad to discuss preventative a maintenance program that will best fit your centrifuge needs.

Wastewater treatment plants for both municipal and industrial applications are designed to produce a clean, safe water discharge, usually to a river. The complexity of the plant will depend on the immediate environmental considerations and the consent limits negotiated with the authorities.

More and more our horizontal spiral decanter centrifuge already used in municipal applications and got the good feedback.

There are basically two application types in the wastewater treatment industry for the decanter centrifuge:

1. The first is to take liquid slurry (around 1-3% ds.) as feed to the decanter and thicken it to around 8% ds, often prior to going to a biological digester.
2. The second is to feed the decanter centrifuge with similar slurry and dewater the solids to a dry looking solids mass prior to disposal. In the second case the solids can come from the primary clarifier or the secondary clarifier after biological treatment.

waste water processed

DC Machinery range of decanter centrifuges is ideally designed for these applications. Controlling the decanter centrifuge operating parameters optimizes the consistency of the discharged sludge.

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

The model pf DCLW355-1250 variable frequency decanter centrifuge is one of salable product of DCLW series centrifuges. Recent days, we have one sample product prepare to delivery to Turkey Market whom is the biggest Oil&gas production group in turkey.

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The sample unit of the centrifuges including below items.

1) 1 sets DCLW355-1250 centrifuges, high speed stepless adjustment from 0 to 3200rpm. The centrifuge is used for solids control
application. When recovery barite, the user can put it around 1800RPM; when cut mud weight, the user can put it around 2500RPM; When
remove very fine solids, the user can put it around 3000RPM.
2) 2 sets screw pump. One set screw pump for feeding centrifuges, the other sets screw pump for backup. At drilling site, time is
money. With backup solutions, this can be guarantee and save a lots for drilling.
3) 1 year spare parts for 1 sets centrifuge & 2 sets screw pump. Spare parts is also very important for centrifuge operation. It is
better purchase it together when purchase equipment. Spare parts purchased separately may lead to high extra freight cost or project
suspending.

centrifuge

Except for this best cost effective high speed centrifgue, the turkey end user is considering more order of DC drilling waste management. We will proceeding the order in earlier of 2016.

Drilling mud decanter centrifuges are designed specifically to remove unwanted solids and fine particles from virtually all kinds of used drilling mud, including those based on water/synthetics and conventional oil-based drilling fluids.

centrifuges

Features of DC Decanter Centrifuge:

Southwest Petroleum University Technology Support
High Speed up to 3200RPM & Variable Speed by frequency converter
The main body of the decanter centrifuge made from stainless stee:SS304/SS316/Titanium Alloy
The screw propeller and solids discharge made from stainless steel Stainless Steel protected by tungsten carbide alloy.
German FAG/SKF Brand Bearings
Screw propeller & Solids Discharge Stainless Steel protected by tungsten carbide alloy.
Solids Liquid separation system package available
Electrical Components: SIEMENS/Schneider/ CHINT

decanter centrifuge1

DC Solids Control based in China manufacture and supply complete line of high-speed, variable-speed and fully variable-speed decanting centrifuge for handling drilling fluids. Our factory and company are Quality Management System ISO 9001-2000 certified. DC Solids Control operate international oil gas drilling mud separation system。 Ruggedly built for oilfield and industrial Solids control service, decanting centrifuge is especially effective in meeting fluid-on-cuttings discharge requirements in environmentally sensitive areas. Decanting centrifuge also deliver high fluid recovery rates and efficient solids control to significantly reduce the operator’s total mud cost and limit waste disposal volumes. DC-China leading decanting centrifuge manufacturer.

Centrifuge used for recovery barite to remove small solid particles, reduce the mud solid content, to ensure the performance of the drilling fluid. And DC production drilling fluid centrifuge has high purification efficiency, convenient adjustment and easy maintenance.

Even the finest solids can be separated in the decanter centrifuge if its sedimentation rate in the carrier liquid is sufficiently high. The sedimentation rate depends on the particle size, the particle shape, the density difference between solid and liquid, and the viscosity of the latter. In many cases, significant improvement is possible by conditioning, for example heating or addition of flocculants. Also important is the geometrical design and establishment of operating parameters.

SONY DSC

DC Solid control decanter centrifuges operate on the contraflow principle. This means that the suspension to be separated is fed approximately in the centre of the drum, the sedimented solid matter is conveyed towards the smaller diameter by the screw rotating at a speed differential in relation to the drum, whilst the clarified liquid overflows at the opposite end of the drum.

SONY DSC

The height of the liquid level in the drum and thus the ratio of clarifying to drying section of the drum can be infinitely varied. This permits optimum matching to the separation application involved.

The speed differential between screw and drum is effected by means of a CYCLO gear unit. Drive is effected in standard form by V- belt, the centrifuge being fitted, according to speed combination, with a single drive (fixed eccentric shaft) or dual drive (driveneccentric shaft).

Drilling fluid decanting centrifuge used for recovery barite to remove small solid particles, reduce the mud solid content, to ensure the performance of the drilling fluid.

Decanter centrifuge is a mechanical equipment which utilize the principle of centrifugal and sedimentation and can carry out continual separate the suspend liquid with density difference. The centrifuges which made by out factory can clarify, dehydrate and classify the suspensions with 0.002-3 mm solid-phase particles and thickness range at 0.5~40%.

centrifuges

Following the increasing of market request, more and more manufacturer can supply decanter centrifuge and used in many fields. Different manufactures have different designs and efficiency. The following is DC Solid control decanter centrifuge main advantages which is suitable for using in oil&gas drilling, waste water treatment and other industries.

decanter centrifuge

Advantages of DCLW series decanter centrifuge
1. Stainless Steel 316 bowl, conveyor and main body resist corrosion and prolong service life.
2. Tungsten alloy tile protects conveyor from wearing and increases solids conveying efficiency.
3. Replaceable tungsten carbon allay ring protects solids discharge port.
4. German FAG or Sweden SKF Bearings
5. Electrical components: SIEMENS/Schneider, ATEX or IEC Ex for option.
6. 3 overload safety protection: the first is the safety protection device of the gear box, the second is the hydraulic coupler overload protection, and the third is the control panel with over currency protection.

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