Author: gnadmin

The company who provides environmental
protection service may have the business for dredging in rivers or lakes. Many
years’ soil sedimentation down to the water bottom, leaves falling into the
water and then rot, and the trash threw into the water will make the river bed
higher and higher which leading the pollution of the water and even the cutoff
of the river flow. Therefore, we need find a solution to take out the sand,
silt and trash at the bottom of water to make the water clean.

To take the solid stuff out from the water,
we need a solid and liquid separation system to do this job. As a leading
manufacturer of solids control equipment, GN solids control luckily
jointed a project to make the lake water clean inside a residence district.
There is a dredging boat that can take the solid mixed with water from bottom
of the lake, the dirty slurry was sucked out and delivered on to the land with
smelly smell.

The slurry is fed via a steel wire box
where large size solid stuff will be blocked and collected. Then the liquid
will be pumped to GN’s solids control system. In this system, GN designed 3
stages for solids control including shale shaker,
de-sander and de-silter. Both the de-sander and
de-silter are equipped with underflow shaker that could make the discharges
from cyclone much dryer. After treated by the de-silter cyclones, the solid
stuff with size larger than 15-20 microns will be removed. And the rest solid
in the slurry is difficult to remove by using mechanical machinery.

Flocculation is a good method to gather the
ultra fine solids in the slurry. Add the flocculation agent into the slurry as
per certain ratio and then fully mix with mud agitators. The
flocculated slurry will need several times for sedimentation and then will be
pumped to belt filter press for final dewatering process. The solids will be
discharged with a thin cake shape, and the water could be discharged directly
back to later or river.  

The advantage of the filter press is to
make the solids much dryer, and disadvantage is high cost and small treating
capacity. Some other contractor will use decanter centrifuge to do the final
dewatering job on consideration of its larger treating capacity.

We are negotiating our first AD grit removal contract (potential 3000 ton). We will use the unit that is on the way for this.
We are putting a package together for sewage sludge, consisting mainly of rags and grit separation. First process will be the removal of the rags and for this we will have to make adjustment to a single deck shaker by adding spray bars underneath the shaker deck to be able to clean the mesh if it gets blocked. We can do this as a retrofit here but would prefer if it can be designed and constructed in your factory. We will need a buffer tank with pump to feed the spay bars incorporated in the unit ( fresh water fed). Video attached. We are looking at shaker:
GNZS703E-DZ  one or two units to match 240m3 desander
After removal of the rags we have to deal with the grit and believe this should be done with a standard desander unit. GNZJ703E-D1S8N/ GNZJ703E-2S12N
We might want to add on to this a desilter unit or small centrifuge. The water for the spray bars can come from fresh water supply and does not have to be recycled as disposal of water is not a problem at sewage treatment plants.
All to be mounted on a tank with appropriate compartments.

We might need a suction pump (chopper pump type) to chop rags up to smaller bits and to deposit on the first shaker.https://www.youtube.com/watch?v=zhTEjFd-vxo
http://www.chopperpumps.com/
Ideally none of the units to be longer than 2500mm so we can fit it broadways onto the lorry deck, together with walk ways and access ladder.

Before starting today’s article, we would like
to tell that the decanter centrifuge mentioned here is 2 phase type centrifuge
used in to separate the solids and liquid where the slurry is coming from the
drilling site. The slurry includes drilling fluids, oil sludge and so on.

Decanter Centrifuge Applications

On drilling site, the decanter
centrifuge is used in solids control system as the final stage solids
control equipment to remove the fine solids in the drilling mud or to recover
the barite in drilling fluids. While the decanter centrifuge can also be used
as a machine to polish the effluence discharged from the vertical cuttings
dryer in waste
cuttings management system. In the dewatering system, we can also find the
decanter centrifuge that is used to treat the flocculated slurry in which the
ultra fine solids can be separated out.

How to Operate Decanter Centrifuge as per
Request

GN’s 2 phase decanter centrifuge is always
used to separate solids and liquids. According to different request, we can get
the different discharges. If you want to get much dryer solids, you can
increase the feeding capacity, increase the rotating speed, adjust the liquid
level plate to a low position or reduce the differential speed. By doing any
one mentioned before, you can make the solids discharged much dryer. And if you
reduce the feeding rate, reduce the bowl speed, fix the liquid level plate on
the bowl big end to a high position or increase the differential speed, you can
get a much clear liquid. Sometimes, you need make adjustment for several of the
factors at the same time to get the expected result according the project
request. In dewatering system, the amount of flocculation agent added in the
fluids would change the dryness of the discharged solids and liquid.

GN’s latest C version decanter centrifuge
with VFD control
panel is an ideal machine to do all the above jobs, as it can be adjusted
easily via HMI system to run at RPM from 0 to more than 3000.

GN Solids Control equipment is
working in over 60 countries and areas. Good performance and reasonable price
win good reputation for GN Solids Control.

1)   
GN Agitator for Nigeria client

We
have one client from Nigeria engaged in solids control service. The client boss
is operation manager for Baker Hughes Nigeria before. He leaves the company and
starts his own company for over 3 years. During the past years, the client
always buy equipment from us, etc. decanter centrifuge, screw pump, centrifugal
pump, screw conveyors etc. Recently, the client buy 4 sets mud agitator to
replace the old agitators in the mud tank.

2)   
GN Centrifugal pump for Egypt
client

Egypt
is very important market for GN Solids Control. There
are lots of China brand rig working in Egypt, including big oil drilling rigs
and workover rigs. And solids control equipment is also in large demand every
year. Recently, we have one client from Egypt bought 30 sets centrifugal pump
for Halliburton project.

Formerly,
we only have big quantity of centrifuges, vertical cuttings dryer working in
North Africa, but now we also have many general solids control equipment
working there, eg. Centrifugal pumps, shaker screens etc.

3)   
GN brand decanter
centrifuge for Africa market

GN
brand decanter centrifuge is replacement centrifuge for Swaco centrifuge, or
derrick centrifuge, or NOV brandt centrifuges. They have similar working
principle, similar design, similar production material and also similar working
performance. That is why we call our centrifuge as replacement centrifuge for
USA brand centrifuges. In the past years, market share of GN centrifuge is
going up in fast speed. And the year production of GN centrifuge is also
doubled to meet the market demand.

GN
Solids Control, as China leading manufacturer of solids control equipment &
waste
management equipment, will surely support each client with high quality
equip9ment & reasonable price.

GN Solids Control can offer complete distinctive
line of solids control equipment, drilling
mud system. The power origin is various pumps; we live also original
manufacturer with regard to various pumps, including twist pumps, centrifugal
pumps, submersible slurry pumps, shear pumping systems etc .
Recently, we have a number of order ready for delivery, My spouse and i
concluded all the pumps useful for recent project, and find in which pumps
& electric control panels is also big benefit. There are 12 sets
centrifugal pumps, 4 sets submersible slurry pumps, 9 units of screw pumps.
GN Centrifugal pumps & Electric powered control panel
GN centrifugal pumps is replacement for NOVEMBER brandt mission pumps, Pump
shell and impeller is definitely wear-resisting material, pump having Kansai
heavy anticorrosive fresh paint, longer lifetime. We can go with solids control mud
system with centrifugal pump, we can easily also only sell typically the pump
for client’s precise application.
We generally can certainly match electrical control panel & cable to
connect by pump motor to control panel for convenient employ.

GN Submersible slurry pump & Electric control panel
GN Submersible slurry pump can be used for fluids move with big particles. Its
single stage and sole suction slurry pump. The actual pump shell and impeller
no bearing, no canal seal, which can transport wonderful medium of solids
contaminants.
The slurry pump might be installed in mud tank to transfer mud
available, can be installed on mud opening in HDD jobsite.
We are able to also match electric control panel & cable interconnection
from slurry pump generator to control panel.
GN Screw pump & Electrical control panel
GN mess pump is positive shift pump, ideal pump intended for feeding decanter
centrifuge, as well as to transfer other medium without having agitating.
It is composed of attach pump rotor and mess pump stator; these two pieces are
the major spare parts elements.
We generally use Uk brand Netzsch brand pump, with long-term relationship, we
can make better price for clientele.
We can also match power control panel & cable television connection from
slurry pump motor to control panel.
If you are in need of some penis pumps, pls contact GN SOLID WASTE CONTROL
VARIOUS PUMP.

What kind of waste materials can be treated
with thermal desorption unit (TDU)

Thermal desorption unit
(TDU) is mainly used to treat the waste solids discharged from drilling
waste management equipment, like vertical cuttings dryer, high G drying
shaker, decanter centrifuge, etc… In theory, all oil type solids whose vaporization
point is below 420 degree centigrade could be treated with thermal desorption
unit (TDU). The oil type solids above mentioned is oily waste with a certain
amount solids, like mixture of mud and sand, the oily sludge after tank
cleaning.

Functions of Thermal desorption (TDU) unit
for waste materials

The pyrolysis furnace roller in thermal
desorption unit (TDU) heat the waste material in spilling way, and the material
is pushed forward by shoveling plates weld with a certain angle on the roller’s
inner wall. If the material is only oily mud, the spilling character would be
lower. The Pyrolysis Oil can be used as fuel oil. Diesel and heavy oil can also
be used as alternative fuel type for the startup and running of the thermal
desorption unit.  

Many people are wondering if the thermal
desorption unit can be used to treat waste tires or not. Below explanation can
be taken for your information.

Generally speaking, the Thermal desorption
unit (TDU) is mostly designed and used for oily sludge or oil waste from oil
and gas drilling field. And it is suggested to be used only for oily sludge or
oil waste. In principle, it can be used to treat the waste tire. But you need
to take out the steel wire from the tires and chock it into small pieces and
add some extra material to prevent it to bond on the drum unit,. And the size
after bond is better no larger than 30mm*30mm*30mm. normally, the thermal
desorption unit (TDU) have the dust removal system for the gas, But depends on
the local regulations, you may need extra treatment system for the discharges.

GN Solids Control has been working in the
solids control equipment design and manufacturing for many years, with an
engineer team of more than 20 years experiences, GN Solids Control is familiar
with the solids
control shale shakers, and also more professional in shaker screens than
other shaker screen companies.

The shaker screen’s quality affects the
shale shaker’s performance:

1. When the screen mesh is of better
material and well sealed, the service life of each screen is longer, and
enhances the whole efficiency of shale shakers. GN Solids Control use high
quality SS304 or SS316 for mesh cloth material of shaker screen
from reliable supplier.                                             

2. the rubber chosen for the shaker screens
Is important also, if the rubber is too hard, it couldn’t serve well for
sealing and the cushion function is less active. While if the rubber is too
soft, it could be easily worn. GN has tested its shaker screens on their own
shakers and also GN clients has used GN screens on their shakers of many
brands.                                     

3. the glue used between the screen mesh
and screen frame is important also, GN Solids Control chooses
an brand from North American supplier for the glues.

4. the screen frame material and screen
frame welding determines the service life of shaker screens. For shaker screen
frames GN has 2 options, the steel frame one and the composite material one. Both
welt by professional

Now, some of GN produced shaker screens are
for GN’s own shakers, and some are ordered by old clients for other USA or
European brands. Some other equipment manufacturers ask GN to help design the
suitable structure for their customized and special screens. And GN screens are
enjoying good fame. If you have inquiry, welcome to visit our website or
contact sales directly.

GN Solids Control is China leading manufacturer
of compact design mud recycling
/ cleaning system for HDD, CBM drilling and water well drilling. GN mud
desanding plant for micro tunneling, piling and other trenchless activities is
also sold well.

GN 500 GPM mud recycling system for HDD and
water well drilling has be dispatch for Middles East. The system is catering
for mobile unit, and can be used for water well drilling, horizontal
directional drilling (HDD), Coal bed methane (CBM drilling), as well as oil and
gas drilling.

Equipment included in the 500GPM Mobile
unit mud system:

1) GNZS703E-ZD shale shaker, 1 ea

It is a linear motion shale shaker with 3
panels. The shaker is equipped with back type feeding box for a lower feeding
height. In case the mud will be flowed to shale shaker directly through
pipelines.

Features of GNZS703E shale shaker

a. It utilizes the most reliable linear
motion for a stable performance.

b. The shaker model utilize pretention
screen, Each screen mounted by 2 ea wedge for fast screen changing.

c. The shale
shaker deck of GNZS703E shaker is made from stainless steel material for a
better performance of anti-abrasive and longer lifetime.

d. The dumpling spring of the shaker is
steel material internal for more stronger and better performance of vibration
desorption. The spring external is protected with rubber sleeve to prevent
fingers involved in during operation.    

e. The vibration model is chose from
worldwide famous brand: Italy Oil or Martin.

2) GNZJ703E-8S desilter mud cleaner

It is the combination of a shale shaker
GNZS703E and 8 ea 4’’ desilter cone assembly. The 4’’ desitler cone is made
from PU material for long lifetime.

And the cone assembly is removable. In case
needed, the Operator can bolt off the desilter cone assembly and mounted a
feeder box and use it as a separator shale shaker.

3) Slurry pump 1 ea. In case mud maybe stocked
in mud pit, a slurry pump is used as backup.

3) Mud tank 1 ea. The mud
tank is equipped with container block for easy mounted and clocked on the
trailer.  

Leading in the HDD industry for drilling mud taking,
GN have her standing as a professional solids
control equipment / system provider. Not only good quality, but also an
excellent soltuion supplier. Not only offering standard systems, which most
manufactures prefer to do, also delivering customized soltions, even when most
of us still recommend the standard treatments.
GNMS500B is a middlized alternative for the 500gpm capacity required projects.
Normally for adding, we use GNMS500D, for big HDD projects, we all use
GNMS500GL. While there even now are some projects, just at the center. Not like
normal piling, just have big particles, and only have to separate the biggest
particles. None like the bigger HDD jobs, need big tank hard drive volume. For
this project, assessed the site arrangement, the client would prefer to dump
the solids squander to the end, not the inside, then we rearrange often the mud cleaner postion.
Some sort of customization on a standard system.

Features of GN HDD CBM Mud Recycling equipment
Complete line Mud System: GNMS-200GPM / GNMS-350GPM and GNMS-500 GPM /
GNMS-1000GPM / GN1500 GPM Self-Contained Mud
Recycling System.
Economical Equipments integration: Complete going mud equipments from a
individual source-GN Solids Control Manufacturing.
Fast moved compact system: Small footprint design with quickly connection for
removable components and most parts fixed when traveling meet transport
regulation.
Confident customer service: We can send each of our experienced engineers for
installment, and training up client engineers.
Mud Tanks Adaptable Options:
Skid Mounted or perhaps Trailer Mounted or Hydraulic Jack Up mud recycling
Aquaria available for your options.
For GNMS500B details, pls download all of our brochure from website:
In this project, the client is using some sort of famous Japanese bore adding
machine, and after checked the site by their industrial engineer, finally
choose to cooperate with our value.

Machinery
manufacturers cannot fulfill the customer if they don’t have an adequate
inventory for main or maybe popular requested product within their warehouse.
GN Solids Control, though already the leader involving solids control equipment
suppliers in China market, is actually trying the best to make the inventory
for main equipment in the event any urgent request from clients.
Due to the slowing down on the drilling industry, almost all of the needs on
primary solids control equipment like shale
shakers, mud cleaner even the mud
tank system are doing the used ones. That may be no doubt a cold winter for
the brand new equipment providers. As a result of consistent efforts on
solutions innovation, competitive cost, most critical the stable performance,
GN solids control still could walk in the snowstorm steadily.

You never know when the market place will get better, so , precisely what GN
did is to retain enough stock and to discover the opportunity. Just like the
old telling, the opportunity always prefers to bump the door of who has
previously made adequate preparation. Including below picture shows:

GN new warehouse keeps Up and down Cuttings Dryer unit intended for prompt
delivery
Vertical cuttings dryer unit is the key devices in drilling waste cuttings
drying system, by using this type of system, the driller could easily get a
pitless mud system to save drilling cost through recovery more fluids and also
discharge less solid squander. GNCD930
cuttings dryer model has already proved by many huge in oil industry
including Baker Hughes, Shell, CNPC, SINOPEC, Greatwall drilling, Shengli
oilfield etc . It could be manage at 900RPM to get 4 hundred G force and
1200RPM to get 750. The adjustable speed is also available.

Suppose the customer buys a cuttings dryer unit, however , absolutely no
decanter centrifuge to enhance the effluence out from the cuttings dryer? No
worry about in which, GN already thought about this specific. That is why there
are 20 products 14” centrifuge kept from the warehouse. GNLW363CG is the best
lover for GNCD930 in spend management system. Besides, this kind of model
centrifuge could also be employed in barite recovery and typical fine solids
separation. 3200rpm / 2700rpm /2200rpm, various speed for different
application, only tell GN what task you want to do, and then we can recommend
the suitable speed for you. GN’s 14” centrifuge speed could possibly be
adjusted by changing the particular pulley or even equipped with a clever PLC
variable frequency generate control panel.

If you have any kind of request on the cuttings dryer and decanter centrifuge,
simply no hesitate to take up you telephone and dial us.