Month: January 2019

GN Solids Control is a manufacturer of solid-liquid separation equipment and waste mud environmental treatment equipment, and can provide various qualification certification and quality certification equipment worldwide. It has been exported to more than 70 countries and regions, and its products are distributed in many mud treatment construction sites around the world. Some parts of the GN Solids Control waste mud treatment system are: 1. Dry sieve. 2. Centrifuge. 3. Flocculation and drug treatment equipment. 4. Mud conveying equipment. 5. Mud mixing module. 6. Store the transfer module. The most important core equipments are dry sieve module, centrifuge module and flocculation dosing module. This paper mainly introduces flocculation and dosing module system.

GN Solids Control GNDU2000R Series The 20-foot-box flocculation dosing system is automatically equipped with a chemical flocculant to assist the decanter centrifuge to separate fine particles from the mud, resulting in relatively clean water for wastewater reuse. Or used for sludge separation, separation of oil and cement and other fine particle separation needs.

By using the GN Solids Control GNDU2000R series of 20-foot containerized flocculation dosing system with GN Solids Control high-speed variable frequency decanter centrifuge, the ultra-fine particles in water-based drilling mud can be separated to meet the requirements of recycled water. For waste mud treatment systems, the Crown Flocculation dosing system is especially important to help the centrifuge process the mud to be clean and to reduce the generation of drilling waste. Thereby reducing the overall disposal cost of the post-disposal slurry.

Description of the operation of the GN Solids Control PAM automatic flocculation dosing system:

During the automatic dispensing of the medicament, the operator adds the medicament to the medicament configuration box. After starting the system, the medicament is mixed with water and first enters the stirring solvent tank, where it is thoroughly stirred and mixed by the agitator; After the box is full, it will overflow to the ripening solvent tank, and then mix and mix again here; after the ripening solvent tank is full, it will overflow to the drug storage box, and the configured liquid can be added. The medicine pump is put into the dosing point, and the fine particles are flocculated to accelerate the precipitation to maximize the solid discharge in the waste mud.

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Connect last page,we will continue talk GN solids control centrifuge system advantage

5, main bearing lubricant flow, liquid level monitoring

 

The flowmeter and the liquid level switch are installed on the lubrication station of the centrifuge; the flow rate of the lubricating oil is monitored, and the shutdown protection program is started when the liquid level is low.

 

6, the feed flow meter

 

A feed flow meter is installed at the feed end of the centrifuge to monitor the feed flow rate of the centrifuge in real time.

 

7, the feed pump requires frequency conversion.

 

The feed pump is a variable frequency controlled mud pump. The speed determines the flow rate and the motor speed can be adjusted to control the flow.

 

8, security

 

8.1 Main bearing temperature protection: The main bearing is installed with a thermocouple to measure the temperature, the temperature reaches 85 degrees alarm, and 95 starts the shutdown protection program.

8.2 Vibration protection: The vibration switch is installed on the body. When the vibration is greater than 7.1 mm / s, when the vibration is greater than 10 mm / sec, the shutdown protection program is started.

8.3 Torque overload protection: When the torque of the motor is greater than 90%, the flow rate of the feed pump is automatically reduced. When the torque of the motor is greater than 110%, the shutdown protection program is started.

8.4 Lubricating oil level protection: When the liquid level is low, the centrifuge starts the shutdown protection program.

8.5 Start interlock protection: There is a start and stop interlock protection program in the PLC program. The start can only start the auxiliary machine first, then start the main machine, then start the feed pump; stop it can only stop the feed pump first, then stop Host, then stop the auxiliary machine.

8.6 Motor temperature protection: When the motor temperature is higher than the set alarm value, the alarm is displayed on the HMI. When the motor temperature is higher than the set stop value, the shutdown protection program is started.

 

9, automatic stop design when blocking(Explosion Proof Pressurized VFD Control Panels)

 

When the material is blocked, the current and torque will be overloaded. At this time, the PLC and the inverter will start the automatic stop protection function.

 

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In recent years, GN Solids Control has developed construction waste mud treatment equipment for construction waste mud generated from subways, tunnels, bridges, and slotted continuous walls. The main equipments include centrifugal separation device and chemical treatment device, which can realize automatic operation, energy saving, emission reduction, high efficiency and environmental protection. It solves the construction environmental problems for the majority of users and reduces the construction difficulty.

Introduction to automatic control of mud centrifuge separation system:

 

1, speed, differential speed, differential speed detection

 

Drum speed, auxiliary machine speed, differential speed are monitored by PLC in real time and displayed in real time on HMI; differential speed = (drum speed – auxiliary motor input speed) / differential differential ratio.

 

2. After each run is completed, the automatic cleaning line needs to be run.

 

The selection buttons “stop flushing” and “stop no flushing” are set on the HMI. The user can select according to the actual situation; the shutdown flushing process is: after stopping the liquid supply pump 30S, the flushing valve (electric) is turned on, and the flushing valve is closed after 10 minutes. (Electric), then stop the main motor for 20 seconds and stop the auxiliary motor after 30 seconds.

 

3, vibration monitoring

 

A vibration switch is installed on the centrifuge body. When the vibration is greater than 7.1 mm/s, the vibration protection is activated when the vibration is greater than 10 mm/sec.

 

4, spindle bearing temperature

 

The main bearing at both ends of the drum is equipped with a thermocouple to measure the temperature, the temperature reaches 85 degrees alarm, and 95 starts the shutdown protection program.

 

We will talk rest info in next page,to be continue……

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GN Solids Control is a professional manufacturer of drilling mud solids control equipment. It currently produces equipment in more than 70 countries and regions around the world, providing drilling solids control equipment for dozens of oilfield service providers around the world. The after-sales service has a global radius, responding 24 hours a day to customers around the world, and fulfilling the after-sales service commitment within 72 hours. Four important branch structures have been established around the world, with the United States, Russia, Dubai, and North Africa as parts supply and after-sales services.

 

The following is a very simple and practical mud mixing system:

System components:

 

1. Armoured mud tank device: size 8000*2600*2200mm, volume 20 cubic meters, armored design for transportation and hoisting and mobile construction projects. The round mud mixing tank has no dead angle design, the mud is evenly stirred, and the mud condition is beneficial to the drilling construction service. It includes convenient design such as ladders, walkways, guardrails, manifolds and valves.
2. Mud transfer pump: GNSB6*5C-13J, motor power 45kw, conveying capacity 150 cubic meters / hour. The main purpose is to transport the mud to carry the mud material in the funnel into the mixing tank.
3. Mixing hopper: GNSLS045A, mainly used for adding dry powder mud materials.

      4. mud agitator: GNJBQ075DD, motor power 7.5kw, speed 60 rev / min, double impeller, mainly the mixing and miscibility of the dry powder slurry material and water.

5. Electronic control system: It is mainly to control the explosion-proof control system of the above equipment that needs mud mixing work.

In the drilling environment, the uniformity of the mud will greatly affect the drilling work. In order to ensure the mud supply flow and quality, the mud mixing should be taken seriously.

 

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