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This week, GN completed the factory test and delivery of one set decanter centrifuge GNLW364ET-VFD, which will be used for sewage treatment in a foreign meat processing plant.

Decanter centrifuge is commonly used solid-liquid two-phase separation equipment. In the production process of many food plants and meat products plants, some sludge is often generated. This kind sludge cannot be directly discharged into the municipal sludge drainage pipeline. Dewatering treatment is required in advance to separate as much solid substance as possible to obtain relatively dry sludge, which is convenient for subsequent transportation and further drying treatment.

GN Sludge Dewatering Centrifuge is driven by dual motors, and the dual motors use the DC common bus operation principle, which can save energy consumption during equipment operation. The rotating assembly of the decanter is composed of a rotary bowl and an internal screw propeller. Slag is discharged through the speed difference between the bowl and the propeller. The bowl speed and differential speed can be set on the touch screen of the variable VFD control panel equipped as standard by GN according to different material conditions and treatment effects. The frequency converter of main and auxiliary motors is equipped in the VFD control cabinet to start smoothly and protect the motor. According to the customer’s requirements, the frequency converter of the slurry pump can also be equipped to control the feeding speed.

In terms of structural design, GN sludge dewatering centrifuge places two motors at one end of the equipment, and the other end is arranged with feeding tube. This structure is easy to install and maintain, and can also provide operators with equipment operation space.

There are many organic substances in the sludge generated during the processing of meat products plant, which has strong water absorption and is difficult to separate. If you want to achieve better separation effect and clarified liquid, you need to use high-performance flocculants to flocculate the sludge in advance. Then, in the process of separation, it is necessary to select an appropriate differential speed to discharge the solid phase from the bowl. The chemical dosing unit of GN Company is often used in the sludge dewatering production line. Because of its excellent performance, it is adopted by many users.

Recently, GN sent a screw press to customer from Southeast Asia for wastewater treatment in textile plant. This equipment in this order is used as a trial unit to verify the applicability of the equipment. Therefore, the customer has chosen the smallest model in the GN product series. If the site operation is successful, the customer will order large model to meet industrial production.

The screw press is a compact sludge dewatering equipment, which is favored by many users because of its high degree of automation, low noise and low energy consumption. Generally, the screw press is structurally composed of two parts, the sludge flocculation bin and the dewatering assembly. The flocculation conditioning bin is used to receive the sludge to be treated and the chemical solution coming from polymer dosing unit. The sludge after flocculation naturally overflows to the dewatering assembly. After thickening and dewatering in the chamber composed of discs and screw, a relatively dry sludge cake is finally formed and discharged from the slag discharge port.

GN screw press machine uses SS304 as the shell of the equipment, the floating ring and the static ring, and the agitator in the flocculation bin. According to different properties of sludge to be treated, GN can also provide SS316 and duplex SS2205 with better corrosion resistance. In the control cabinet of GN screw press, the motor of the dewatering screw is equipped with a frequency converter, which can adjust the speed of the dewatering screw. If there is material blockage inside the screw, the screw can also be reversed to eliminate the material blockage.

Compared with the dewatering decanter centrifuge, the screw press has lower energy consumption and noise, and has better environmental friendliness in actual work; and compared with the filter press, the screw press has higher automatic working performance and operation convenience.

GN Solids Control has been focusing on solid and liquid separation for many years, and one of the most important product is transferring pump to move the materials into GN made shale shaker, desitler, desander or decanter centrifuge and cuttings dryer. 
GN Solids Control manufactures different types of pumps include vacuum pump, centrifugal pump, submersible pump and screw pump. Among them, GN vacuum pump is largely used to move high solids content and large viscosity materials. 

This week, GN Solids Control finished manufactured manufacturing of 5 sets vacuum pumps includes 3 sets 40B and 2 sets 20B for one oilfield service company to move drilling wastes. 
GN Vacuum Pump is an air driven pump, one Air Compressor is demanded to provide constant and stable air in order to have a certain working pressure and airflow rate. GNSP-40B is able to move 40 m3/h (flow rate varies for different materials), and GNSP-20B can move up to 20 m3/h. 
GN Solids Control manufactures 3 types of the vacuum pumps if classified by the flow rate. 40B is the largest one, which is frame design structure, lifted by crane or moved by forklift. While 10B and 20B are both mobile unit with wheels, can be moved with the materials site change. 
GN made vacuum pumps have been widely used in the following working sites:

A.Drilling Cuttings Transfer

B.Mud Tank Bottom Sludge 

C.Drill Platform Mud or Cuttings

D.Environmental Protection Waste Mud Pit 

GN Solids Control has provided vacuum pumps for many oil service companies and help to reduce the labor cost largely and bring high working efficiency to move the drill cuttings quickly movement. 
ATEX certified vacuum pump can be also provided. GN Solids Control also opens to provide customized color or labels for our customers. Any special solids and liquid separation and moving demands, GN Solids Control always has a right cost-effective solution for your.

GN Solids Control just finished manufacturing and testing of one set 1000HP drilling rig solids control system for one Middle Eastern company who will use it in New Zealand next month.
With the rich experience on oil and gas drilling mud solids control and drilling waste management, GN Solids Control is proud to have another successful 1000 HP drilling rig solids control system for a happy customer. So below are the treating equipment in this mud solids control system:

1.GN Shaker Tank
Shaker tank is divided into shaker compartment, desander compartment, and desilter compartment. Two parallel shale shakers connected by a pipe line type mud distribution box to convey the drilling mud on to shaker screens evenly, so the big particles can be removed before feeding into cyclones.
For convenient control, manual butterfly valves are fixed on the main ports so they can be turned on or off to change the mud flow. And a mud cleaner fixed with desander cyclones and destiler cylones can be also used to run accross the cyclones and play as a 3rd unit shaker in case the suddenly mud flow rate increase.
Two centrifugal pumps fixed on the side of the shaker tank to feed into desander and desilter separately.

2.GN Mud Storage Tank
Two storage tanks are laying parallel to the shaker tank from where the after treated clean mud are moved. Every mud storage tank is fixed with 3 units mud agitators to keep the mud from settling.
A customized big jet mud mixer is used to add new drilling chemicals or additives from the mud hopper where standing platform is used to carry big bags. And two parallel centrifugal pumps are connected with the venturi hopper, either pump can be used as the feeding pump.
Besides the above mentioned main module, GN Solids Control also provides some auxiliary parts like mud gun, light etc. More importantly, all the explosion proof standard control boxes are also provided by GN Solids Control.

Oil contaminated soils is one of the most difficult materials in order to reuse the soil and oil, as a leading Solids and Liquid Separation Equipment manufacturer, GN Solids Control is especially good at providing oil contaminated soil washing and separation equipment.
Last month, GN Solids Control finished all the testing of one Oil Contaminated soil washing and separation equipment for one Middle East customer before leave factory. This turnkey solution is mainly composed by the following product:

1.Soil Washing Modular
Soil was feed into a GN catch hopper unit, which is fixed with large openings bars to keep the big particles from the shaker. One big coarse shaker is underneath GN catch hopper to remove solids larger then 10mm by using PU screens.
GN screw conveyor is used to move the soil either to a Crusher or to cuttings box. The Crusher is able to feed materials with max. 120 mm and discharge to 15mm. To protect the damage made by fine metal cuttings, one ditch magnet is fixed on the screw conveyor inlet or outlet.

2.Vacuum Pump Transfer Unit
GN Vaccum Pump together with one AC is able to move all the soils or aggregates from the oil contaminated soil. Pipe lines are connected with feeding hopper or pre-heating modular can be changed by turn on or off the valves.

3.Pre-heating & Mixing Modular
To help improve the separation efficiency, it is necessary to use a pre-heating and mixing modular. Here it is composed by 2 mixing tanks with steam hot pipe lines along with the tank, which also fixed with mud agitator to keep agitating the soil.
4.Shaker Separation Unit
One double deck shaker fixed with API 20 or API 40 screens help to remove most of those fine particles after heating.
5.Decanter Centrifuge Separation Modular
In order to remove those finest solids above 2~5 microns, GN Solids Control use 22 inch bowl decanter centrifuge GNLW553-VFD and one 3 phase disc-separator to further separate the oil, water and solids.

6.Chemical Dosing Unit
One automatic chemical dosing unit is provided to add chemicals into the pre-mixing tank and decanter centrifuge.

Mini Solids Pump and Mini shaker for South American Customer GN Solids Control is a top leading solids control and drilling waste management equipment manufacturer with a US branch company based in Houston, TX. Many equipment are stocking in Houston for quick delivery, recently GN Solids America LLC shipped a mini solids pump and one mini shaker to a South American Customer.

GN Solids America LLC a US based warehouse and service center, not only stocks of solids control equipment, but also keeps spare parts and wearable parts in stock for quick repair and maintenance. GN Solids America main business covers USA, Canada, Mexico and those South American Countries.
As for this mini solids pump and mini shaker GN Solids provided, they will be used for drill mud control and collect the spilled drilling wastes in the rig site.
1.GN Mini Solids Vacuum Pump
GN Solids Control builds 3 different models of vacuum transfer pump includes 10B, 20B and 40B which are driven by air and can be used in any hazardous environment. Both 10B and 20B vacuum pumps are fixed with wheels, they can move around conveniently and collect & transfer solids with a small working foot print. While the 40B pump is especially designed to transfer large capacity solids.
GN vacuum pump is equipped with portable suction ports like the vacuum cleaner, generally speaking as long as the transferred material is flowable, GN pump is able to move it. 
2.GN Mini Shale Shaker
GN Solids Control shale shaker is largely used to remove solids from water, and GN Solids Control also large vibrating screen which can be used in mining slurry dewatering or classification.
This GN mini shaker shaker is GNZS752, fixed with only 2 pcs shaker screens. Due to the compact design, GN mini shaker widely used to remove solids from small hole drilling like diamond drilling, mining drilling industries.

With the oil price at a high level, more and more energy companies are trying to expend the production so as to more the more drilling contractors or drilling mud service companies are making capital investment on large oil and gas drilling mud solids control equipment and drill cuttings waste management systems.
Recently GN Solids Control finished another batch of oilfield centrifuges and drilling cuttings screw conveyors for a Middle Eastern customers. It mainly includes 9 sets drilling waste decanter centrifuge, 3 sets oil based mud cuttings dryer, 12 sets screw conveyors and 12 sets screw pumps.

1.GN Decanter Centrifuge
GN decanter centrifuge is one of the more popular drilling mud treating equipment especially the 14 inch bowl size among those various models from 9 inch to max. 30 inch bowl.
GN decanter centrifuge runs at high rotating speed, the rotating bowl and screw propeller rotating at the same direction but with a differential speed so the large density solids are pushed along the internal bowl and discharged from the solids port, while the relatively clean water is collected in the middle circle and pushed through the liquid ports.
2.GN Cuttings Dryer
GN Cuttings Dryer is one key treating equipment when speaks of oil base cuttings or synthesized base cuttings treatment. Usually after treated by GN cuttings dryer oil on the final cuttings can be downsized to less than 5% from 15%, recovered oil can be send to refinery plant for further treating and resell.

Screen basket of the Cuttings Dryer is hard faced, with 3 different openings 0.25, 0.35 and 0.5 mm for option. GN cuttings dryer is self-lubricated with an automatic oil lubrication system.
3.GN Screw Conveyor
Screw conveyor is widely used to transfer solids materials with limited distance. These 12 sets GN screw conveyors are used to collect the cuttings after treated by shale shaker, desander or desilter and feed into GN cuttings dryer.

4.GN Screw Pump
GN screw pump is also called GN positive displacement pump, which usually used as the feeding pump for decanter centrifuge. Due to the special structure, every run of the rotator is a fixed volume, so it can feed a linear capacity fluids by control the rotating speed which can be controlled on GN centrifuge’s HMI control panel.

GN Solids Control is now a leading drilling mud solids control equipment manufacturer in the world, as one of the largest market for GN, Africa takes a very large market share especially when the oil price is at a high level this year.
Just last week, GN Solids Control delivered some drilling mud solids control centrifuges to a African drilling rig contractor.

Centrifuge is the key treating equipment in the drilling mud solids control, usually drilling mud from the drilling rig is send to the shale shakers which distributed by feeding box after removed harmful air by poor boy degasser, and then drilling mud further remove the fine particles by de-sander or de-stiler before finally send to decanter centrifuge.
GN Solids Control decanter centrifuge is able to remove solids larger than 2-5 microns, the rotating bowl and screw propeller run at different speed to achieve drilling mud solids control no matter it is light gravity drilling mud or heavy gravity one. GN decanter centrifuge can also run at low speed to recover barite from drilling mud.

If classified by the rotating bowl size, GN Solids Control decanter centrifuge has nine inch, 14 inch, 18 inch, 22 inch and 30 inch models for different options. All decanter centrifuges’ rotating bowl are made by centrifugal casting, and solids discharge port protected by tungsten inserts and the screw propeller protected by tungsten carbide tiles.
As for this batch of drilling mud decanter centrifuge, GN Solids Control provides 6 sets of 14 inch bowl decanter centrifuges, all controlled by GN VFD box fixed with HMI touch screen where running parameters like the rotating speed, differential speed etc can be changed conveniently. Centrifuges are fixed with temperature sensors and vibration sensors to monitor the two main bearing running in good condition without over heat and also protect the whole rotating assembly without abnormal vibration.

GN Solids Control as a world leading mud cleaning system designer and manufacturer has been providing thousands units to HDD contractors. Last month, GN Solids Control shipped one set 240 m3/h HDD mud cleaning system and one set 120 m3/h HDD mud cleaning system.
All GN Solids Control made systems are effectively to be used for solids and liquid separation, and the typical treating equipment includes shaker, cyclone, centrifuge and centrifugal pump etc. In short, GN uses gravity differences of liquid and solids to achieve the goal of get clear water and dry solids.

1.GN 1000 GPM HDD Mud Cleaning System
It mainly includes 2 sets of shale shaker GNZS703F, 1 set of mud cleaner GNZJ703F-2S12N, 22inch rotating bowl centrifuge GNLW554EP-VFD, 4 sets mud tanks and one jet mud mixing unit (composed by jet mud hopper and centrifugal pump).

2.GN 500 GPM HDD Mud Cleaning System
The 500 GPM hdd mud recyler contains similar treating unit such as 2 sets shale shaker GNZS703F, 1 set mud cleaner GNZJ703F-1S8N, 1 set 18 inch bowl decanter centrifuge GNLW452, 2 sets mud tanks and 1 set jut mud mixer.
GN Solids made HDD mud recyclers help drilling contractors save huge cost on the drilling mud as after used clean drilling mud can be reused and more importantly less waste discharge to the nature.

All shaker screens used on GN shale shakers and GN mud cleaners are made by GN Solids Control. GN Solids Control is the only China screen manufacturer who can provide a API RP 13C 3rd party report which can guarantee GN made screens are strictly on the cut point and conductance.

Nowadays, it is a trend that more and more HDD drilling contractors start to use decanter centrifuge to remove finer particles from the drilling mud, as before only shaker or desilter is used which can only remove solids larger than 25 microns. More decanter centrifuges will be used in the HDD industry in the future.

GN Solids Control has been manufacturing shakers for many years, includes 2 panels, 3 panels, 5 panels and 6 panels if classified screen quantity. GN Solids Control also builds dual motion shale shaker, as most of the shaker GN Solids Control provides to customers are linear motion ones, some drilling contractors prefer to use dual motions which is linear vibration and elliptical motion.
Different motions shakers has different specific usage or advantages. Generally speaking the linear motion shaker is mainly used for mud with low viscosity, large discharge, large solids percentage, big and sturdy particles. While the elliptical motion shaker is suitable for completely different drilling mud. So based on these advantages or disadvantages, GN Solids Control made linear motion shakers are mainly used in the first and second stage drilling, and the dual motion shakers are widely used in the third and forth stage drilling.

As for these 2 sets dual motion shale shakers, they are provided to an offshore drilling company. GN Solids Control is able to provide DNV lifting certified equipment for offshore drilling platform, besides shakers, GN Solids Control has also provided mud cleaners, decanter centrifuges and cuttings dryers with DNV lifting frames to various customers.
All the shaker screens are GN shakers are also made by GN Solids Control. GN Solids is the only Chinese screen manufacturer who are verified by API RP 13C 3rd party.