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Industrial Oils and Purification

febrero 12, 2015Purificación de los demás aceiteselectric power transformers, electricity transformers, excavator, Fuller's Earth, hydraulic fluid, hydraulic liquid, hydraulic oil, industrial oil, oil purification, oil purification system, transformer oil purifier, transformer oil reclamation, transformer oil treatment, Transformer oils, transfromer oil purification, turbine oil recycling, UVM-10, waste oil management

Industrial oils are used as a lubricant reducing friction and wear of parts and components in various industrial machines. The main functions of this type of oil is anti-corrosion protection, dissipation of heat from friction parts, removal of contaminants and reduction of foaming.

Industrial oils can also be used as the base for hydraulic fluid, as well as grease, that extends durability and service life of industrial equipment.

Despite the fact that practically all industrial oils are thoroughly tested in laboratories before dispatch to the user, the oils will become contaminated during use and operation. Industrial oil, just as with any other oil, can become contaminated by atmospheric oxygen, water and particulate matter. Interaction with aggressive media may accelerate oil oxidation that is accompanied by the accumulation of even more unwanted contaminants in the oil.

Saturation of oil by contaminants degrades the oil’s performance. Due to aging and contamination, industrial oils lose the ability to efficiently dissipate heat and protect equipment from corrosion.

It would seem that the aging process is natural and nothing can be done about it except replacing the used oil with new and disposing of the old oil. A practical operator however, will be concerned by the additional costs of used oil disposal, as well as the frequent cost of oil changes.

Fortunately, aging of oil is not all that critical with the advent of modern additives and oil processing equipment. The aging process therefore, can be significantly slowed and the service life of the lubricating oil can be significantly extended.

It is however, necessary to regularly take oil samples to know and understand the oil’s condition and to detect and identify the contaminants degrading the performance of the oil and to purify the oil in a timely manner.

GlobeCore is one of the leading manufacturers and suppliers of industrial, turbine and dielectric insulating oil purification systems.

The CMM-CM type units and CFU-M filter carts made by GlobeCore are successfully operated in more than 70 countries around the world. They are efficient for the purification and regeneration of industrial oils.

The ability to purify and regenerate industrial oil was made possible by using modern technologies and maximizing and customizing the processing operations for the individual client.

The CMM-CM units are designed for removal for water and solid particles from oil by using a special zeolite sorbent and subsequent reactivation of this sorbent in the system.

The CFU-M filtration carts are designed for removal of solid particles from industrial oil. These units can purify the product in one cycle.

Both types are simple in service and operation and facilitate a significant extention of industrial oil service life cycle.

Transfromer Oil Purification Equipment by GlobeCore

septiembre 12, 2014Purificación de aceite de transformadorescable oil, dielectric, electric power transformers, equipment, equipment for oil purification, filtration, high voltage, oil purification equipment, oil purification system, solid insulation, transformer field service, transformer oil, transformer oil purification, Transformer oils, transfromer oil, transfromer oil purification, turbine oil

Application

CMM systems designed and manufactured by GlobeCore can perform the following functions: Degassing, dehydration and filtration of transformer oil, cable oil, turbine oil, and other industrial oils. The CMM units remove gases, free and soluble water, and particulate matter from oils and fluids. The CMM units are used in the installation, repair and operation of oil-filled high voltage equipment up to 1150 kV (power transformers, high-voltage switches etc.) as well as industrial turbines.

The GlobeCore CMM units perform the following services:

Purifying and drying of Transformer Oil
Vacuum filling of Transformers and Electrical apparatuses
Drying and Purifying of oil in transformers (on and off-line)
Vacuum Drying of Transformers
Degassing of Transformer Insulating Oil
Filtration of Transformer Insulating Oil

Technical Description

GlobeCore CMM units are designed as multipurpose Transformer Oil Conditioning units for field or factory use. The units incorporate high capacity multi-stage electric oil heaters, large capacity Vacuum Pumps with external connections for Vacuum filling work, three (3) stage particulate filtration systems, and connections for a large variety of service applications.

The Unit’s measuring devices include vacuum, pressure, and temperature meters. The equipment can also be optionally supplied with a “water-in-oil” measuring device. Installation of a water-in-oil measuring device allows in-line monitoring of water content.

Flow rates are variable from 0 to >10,000 liters per hour (L/H) and heating from 24KW to 210 KW in four stages. GlobeCore systems are designed for easy operation and maintenance.

The principal functions of transformer insulating oils are to serve as a dielectric medium and as a transformer coolant or heat transfer medium. In order to perform these functions, transformer oil must have the necessary qualities at the time of initial impregnation and filling at the factory and later be able to maintain the same quality in normal operation.

High Vacuum Treatment improves insulating fluids that includes transformer oils and silicone fluids. GlobeCore transformer oil purification equipment was developed as a result of 30 years of experience in vacuum treatment of transformer oils.

Benefit

Every company dealing with oil-insulated high voltage equipment (transformers, high-voltage switches, turbines, etc.), shares the problem of having to change and dispose of contaminated oil and fluids. The costs of changing and disposing of insulating oils are frequently very high and need a significant investment in time, labor, and money. At GlobeCore, our equipment offers a practical, proven and economical method to purify oil so that it can be used again and again for your high voltage equipment.

Thermally accelerated Vacuum Dehydration and Degassing of Transformer Oil has gained wide acceptance as one of the most economical methods for the removal of dissolved water and gases.

On-Site Transformer Oil Purification is the most cost effective transformer maintenance service in existence today. The GlobeCore CMM units not only purify the oil within the transformer, but actively regenerate the Transformer Insulating System by removing impurities that had become built up within the transformer over time.

Thermo-vacuum purification and degassing of transformer insulating oil, as performed by the GlobeCore Process, will result in the improvement of the condition of the entire insulating medium of your electric power transformers.

Here are some additional benefits of the GlobeCore Process:

Removal of dissolved moisture from transformer insulating oil
Reduction of combustible gases and oxygen
Improvement of insulating oil dielectric values
Improvement of transformer insulating oil power factor
Extension of oil service life
Extension of transformer service life and reliability

We at GlobeCore are committed to provide our customers with high quality products that satisfy technical and economic objectives. We offer our vast experience in manufacturing, servicing and operation of transformer oil purification systems to your company.

Machines by GlobeCore come with a block of approved original equipment spare parts. These spare parts meet all specifications required of the engineering process. Over the years, optimal and high quality components have been carefully selected for our equipment. GlobeCore guarantees the performance of our machines and the results of the oil treatment processes. We have placed our equipment in more than 70 countries around the world and a reference list available upon request.

Short Process Description

Hot Filtration Mode

A gear type pump draws in the oil for processing via a valve and a strainer. Processed oil is then pumped through the cartridge filter, the three-way valve and is then discharged to the processed oil vessel via a connecting line.

The above mode is also used for transformer core drying. Transformer oil is circulated through the oil purification equipment. After filtering the oil to remove the particles, the oil is heated up to max. temperature of 800C/1472F. All residual gases are removed and the moisture is evaporated in the vacuum degassing chamber. Residual moisture content can be reduced down to less than 3 parts per million (ppm). Oil purification is a necessary maintenance process for oil-filled transformers and can be employed for removal of moisture from the transformer’s core and solid insulation. Heating of the transformer oil moves the moisture from paper to the oil and allows for its removal from the transformer. The most common mistake made by operators of transformer oil purification equipment is to stop the drying process after reaching oil moisture content of less than 5 ppm. After some time, when normal transformer operation conditions exist, the moisture content of the oil increases. It is essential to dry the transformer oil continuously throughout a long period.

Transformer Evacuation

Another required process is the immediate evacuation of the transformer after pumping the insulating oil out of the transformer tank. The “Vacuum Effect” on the insulation surfaces greatly improves moisture content removal. The process must be repeated several times before the desired effects will be achieved.

Hot Filtration and Thermo-Vacuum Drying

A gear type pump draws the oil in for processing via a strainer and cartridge filter. It then directs the oil to the heat exchanger where the oil is heated by the heat conductor. The oil is then fed to the vacuum drier’s sprayer after being heated to 60C/140F. The Vacuum Pump maintains vacuum in the vacuum chamber. a Vacuum can be regulated by valve(s) and monitored on the vacuum meter. Filtered hot air comes into the chamber and removes gases and vapor from the oil’s surface effectively drying the oil. The air is then discharged into the atmosphere via an oil separator by the vacuum pump. A gear type pump then directs the oil into the processed oil vessel. A programmable thermal regulator switch monitors the plant’s function continuously and maintains the pre-set temperature.

Which kind of Transformer Oil Should my Company Buy?

mayo 6, 2014Tierra Fullerdielectric, oil filtration, oil lifecycle, oil maintenance, oil price, transformer oil, Transformer oils

A great number of manufacturers and distributors of transformer oils operate in international and national markets.

Transformer insulating oil is a dielectric liquid that is intended for cooling and insulating electric power transformers and other high voltage equipment. Transformers remain an indispensible part of the electric power generation and transmission industry.

In scientific terms, transformer oil is a product of crude oil refining. The performance properties of transformer oil depend heavily on the quality and parameters of the raw material. The performance of the oil is defined by the positive and negative properties of the crude oil. Chemical composition of oil is quite complex. It includes the following components: paraffin (10-15%), naphtenes or cycloparaffins (60-70%), aromatic hydrocarbons (15-20%), asphalt (1-2%), sulfuric compounds (<1%), nitric compounds (<0.8%), naphtenic acids (<0.02%) and antioxidation additive (0.5 – 0.5%).

Transformer oils must be highly resistant to oxidation and must not form sludge or emulsify when coming in contact with water. Anti-oxidation additives are an important component and can be found in virtually all types of transformer oil. When selecting an oil for your equipment, be sure to look for oils that have good antioxidant additives included since they will inhibit the oxidation process considerably better than uninhibited oils.

The efficiency of such additives is based on the ability of the additives to react with active peroxide radicals that form as the result of hydrocarbon oxidation reaction and are the primary carriers. The presence of additives in transformer insulating oils slows the aging of the oil. As soon as the additive is depleted, the oil ages in about the same amount of time as an oil without the the antioxidant additives. Without the additives, the oil aging process will accelerate.

Two of the main characteristics of transformer oil are its viscosity and density. These have a pronounced affect on the function of the oil. Higher viscosity may mean better dielectric strength, but may reduce the ability of the oil to transfer heat and cool the transformer. Optimal kinetic viscosity of the oil at 20 ̊C is about 28-30×10-6 m2/second.

The oil’s “Dissipation Factor” is responsible for the oil’s dielectric properties and protects the transformer’s electrical system from possible short circuits.

These and the other characteristics of transformer oil are improved by the use of high quality crude oil, deep refining and introduction of additives that increase the oil’s oxidation stability and reduce corrosion.

When oil is significantly oxidized due to the influence of water, solids, air and other gases, and high temperatures, the oil should be replaced. If the degradation of the oil’s properties is not detected in time, transformers can and will fail. When oil decays, it can no longer serve as a dielectric insulator and starts to react with the metal of the transformer tank and hinders cooling and may lead to short circuits.

The following are some of the different kinds of oils that may be purchased in the local market:

VG type oil is made from paraffinic crude oil by a catalytic process with the addition of an antioxidant additive. It is a good dielectric and is rather stable against oxidation. It is mostly used in higher voltage equipment.

GK type oil is made of sulfuric paraffinic oils by hydrocracking. It also contains ionol, an antioxidant, that ensures good stability and dielectric properties of the oil. It is another kind of oil used in higher voltage systems.

TKp oil is made from low-sulfur naphtenic crude by an acid-alkali purification process. The oil also contains antioxidant additives. This oil is recommended for equipment with voltage up to 500 kV.

Oil selection depends not only on the type of electric equipment you are using, but also on the individual requirements of the facility. Most of transformer oils are universal. In all cases, the correct selection of oil type with consideration of local climatic and physical operating conditions ensures reliable and stable operation of electric power equipment such as high voltage transformers and switch gear.