Tag Archives: oil purifier

Selling Transformer Oil: The Right Way to Supply, Receive and Accept the Product

In any business, be it a toy store or transformer oil sales, there are many fine points to consider.  Knowing them will save you time and money.  In this article, we will look into the process of supply and receipt of transformer dielectric insulating oil.

Every sale of transformer insulating oil must be accompanied by the correct technical documentation.  The information required on the batch can be given in original certificates or in official extracts from the original documents.

Receipt and acceptance occurs before removing the oil for use from the shipping container or tank. Ooil samples must be taken and analyzed for compliance with  the product’s claimed and documented performance specifications.  Among the parameters that must be varified are:

  • dielectric strength;
  • flashpoint;
  • acidity;
  • water soluble acid and base content;
  • particulate matter; and
  • water.

An analysis of the oil’s oxidation stability and dissipation factor at 90ºС/194ºF should be performed for electric power transformers of 110kV and above.  This analysis should also include transformers of especially important facilities regardless of the voltage class or level.  If the oxidation stability analysis is to be performed after the oil leaves the shipping container, it is recommended to take samples in the presence of the oil supplier.

For the protection of your company whether buying or selling, and to facilitate arbitration in the matter, should the need arise, one of the samples should be sealed and stored.  This will provide all the parties with an used sample of the oil so that the initial oil quality may be detemined even after the oil has been used.

Samples are taken in the following cases:

  •  If supplied in rail road or truck tanks, samples are taken before draining from each tank
  •  If supplied in barrels, the number of samples is determined by the terms of supply, however, there should be at least 1 sample per 10 tons of supplied oil.

If the results of the laboratory analysis are favorable, the transformer oil is taken to the client and pumped into the buyer’s tanks.  The oil is then either stored or treated before being used in oil filled equipment like transformers and oil filled switches.  Transformer insulating oil is transferred from tanks through hoses using additional special equipment at the storage facility.

If the lab results show that the purity of the oil is not in compliance with the established standard(s), the product must be purified immediately or prior to placement in the oil filled equipment.  Failure to do so will most likely result in preamture equipment failure and unscheduled equipment down time.

GlobeCore manufactures and supplies mobile oil treatment units such as the Mobile Oil Station type CMM-M.  The GlobeCore CMM-M units are designed for degassing, removal of particulate matter and heating of dielectric insulating oils used in electric power transformers of up to 1150 kV.  The CMM-M units can be used to heat oil filled electrical systems with hot oil as well as for vacuum drying and vacuumizing of oil filled equipment.

The following advantages of the GlobeCore CMM-M units should be noted:

  • Purification of dielectric insulating oil in one cycle;
  • Significant service life extension of insultaing oil and equipment;
  • Wide range of equipment options; and
  • Simple operation and servicing.

The CMM-M units can operate in one of three modes:

  • filtration;
  • filtration with heating; and
  • thermovacuum purification and oil degassing.

Oil filtration

During operation, transformer oil accumulate contaminants, which can form various chemicals. These substances reduce the oil’s performance and are, of course, undesirable.

Operation of the transformer becomes unstable. To prevent this, transformer oil is filtered and purified. Some of the methods are discussed in more detail below.

The first stage of transformer oil purification is mechanical. This is a superficial treatment to remove particulate matter and water. The next step is deeper purification performed in vacuum with heating.

The first two stages are, in fact, preliminary. The main process involves various chemicals.

One of the methods is purification of oil with a 98% sulfuric acid solution.

In comparison to other chemical purification methods, the use of sulfuric acid has a significant drawback. Beside reacting with the contaminants, the acid also adversely influecnes the structure of the oil, making it somewhat unstable. Additional processes are required to resolve that problem.

The nature of selective purification is evident from the title. Speical solvents are introduced into the oil to remove specific impurities.

De-waxing is another widely accepted process. In this process, oil is treated with special solvents: acetone, toluene, bensol etc, to remove solid contaminants.

It should be noted that chemical methods influence oil’s stability, but extend the oil’s service life at the same time.

It should also be remembered that any purification process should end with finishing purification, closing the cycle of oil processing and filtration. This is usually done by contact method.

This means that the oil is mixed with special materials, usually clay or bleaching earth. The materials are then mixed and heated. Heating facilitates acviation of all sorbents in the clay.

These absorbents capture contaminants. Deep filtration separates oil from the clay. When selecting adsorbent, it is necessary to pay attention to the content of moisture. It should be suffucient to make production efficient and to make processed oil compliant with specifications.

The most interesting technology today involves the use of bleaching clays (Fuller’s earth). Globecore manufactures a range of CMM type units for filtration of various oils with the use of Fuller’s earth. The advantages of the design are the ability of multiple reactivation of the sorbent, mobility, simplicity of operation and high quality of the output product.

Downtime is significantly reduced by the ability to reactivate the sorbent without the need for frequent replacement, thus increasing process efficiency.

Transformer Oil Purification Plant Sucessfully Commissioned in Saudi Arabia

In February this year, GlobeCore specialists commissioned a GlobeCore UVM-10 plant in Saudi Arabia that had been ordered by one of the Saudi electric generating companies.

The Saudi customer selected this equipment for a good reason.  The GlobeCore UVM-10 is a universal plant that purifies transformer insulating oil, turbine oil, industrial oil, and other types of oil.  The UVM-10 unit restores oil by removing water, gas and other various solid contaminants.

The unit has a very wide scope of uses and applications.  It can be used during installation, repairs and operation of oil filled high voltage equipment up to 1150 kV.

Additionally, the UVM-10 can heat equipment with hot oil, perform nitrogenation of transformer oil and add oil into high voltage inlet ports.

The unit features a reliable protection system that shields the unit from overloads and overheating as well as short circuiting of electric components, pumps, motors, lighting and controls.

The UVM-10 stops in case of phase skipping, incorrect phase sequencing, as well as overheating of oil or the oil heater.  Light and sound alarms alert the operator to any problems.

The unit is easy to operate and can be used either in closed buildings or in the field.

Its time to get with the Process.  The GlobeCore Process!

Transformer Insulating Oil Market 2014-2018 Forecasts and Analysis

Texas, USA:  ReportsnReports.com has published “Transformer Oil Market 2014-2018” which provides “Forecast and Analysis” research in the transformer oil market.
Analysts forecast the global transformer oil market to grow at a Compounded Annual Growth Rate (CAGR) of 9.10 % during the period between 2013 and 2018.

The Report divides the global transformer oil market into three divisions: mineral-based transformer oil, bio-based transformer oil, and silicone-based transformer oil.  These are the type of products used to meet the demands of various end-user segments.

The “Global Transformer Oil Market 2014-2018” report has been prepared based on an in-depth market analysis with inputs from industry experts.  The report covers the North American, Europe and APAC regions.  it also covers the Global Transformer Oil market landscape and its growth prospects in the coming years.  The report also includes a discussion of the key vendors operating in this market.

According to the Report, the market driver is an increase in demand from developing countries and the main challenge is the possible adoption of dry distribution transformers.

The Report covers the following regions: North America, Europe and APAC.  Key vendors mentioned are Ergon Inc., Nynas AB and PetroChina Co. Ltd.  Other prominent vendors mentioned in the report are Apar Industries Ltd.,  Calumet Specialty Products Partners L.P., Cargill Inc., Dow Corning Corp. and San Joaquin Refining Co. Inc..

A summary of the report is attached below:

Source: PRWeb

Transformer oil acts as a dielectric medium in oil-filled transformers to cool and insulate the transformer windings and core.  The transformer windings and core, which are highly stable at high temperatures, are fully immersed in these oils as they prevent the contact of atmospheric oxygen with the cellulose paper insulation of the windings, which are highly prone to oxidization.  There are mainly three types of transformer oils: mineral-based, silicone-based, and bio-based.  Of these, mineral-based transformer oil is largely preferred mainly because of its good electrical and cooling properties and cost-effectiveness.

TechNavio’s analysts forecast the Global Transformer Oil market to grow at a CAGR of 9.10 percent over the period 2013-2018.

Covered in this Report

The Global Transformer Oil market can be segmented into three divisions: mineral-based transformer oil, bio-based transformer oil, and silicone-based transformer oil. These are type of products used to meet the demands of various end-user segments.

TechNavio’s report, the Global Transformer Oil Market 2014-2018, has been prepared based on an in-depth market analysis with inputs from industry experts. The report covers the North America, the Europe and APAC regions; it also covers the Global Transformer Oil market landscape and its growth prospects in the coming years. The report also includes a discussion of the key vendors operating in this market.

Key Regions

  • North Americas
  • Europe
  • APAC

Key Vendors

  • Ergon Inc.
  • Nynas AB
  • PetroChina Co. Ltd.

Other Prominent Vendors

  • Apar Industries Ltd.
  • Calumet Specialty Products Partners L.P.
  • Cargill Inc.
  • Dow Corning Corp.
  • San Joaquin Refining Co. Inc.

Market Driver

  • Increase in Demand from Developing Countries
  • For a full, detailed list, view our report.

Market Challenge

  • Adoption of Dry Distribution Transformers
  • For a full, detailed list, view our report.

Market Trend

  • Recovery of European Automotive Industry
  • For a full, detailed list, view our report.

Key Questions Answered in this Report

  • What will the market size be in 2018 and what will the growth rate be?
  • What are the key market trends?
  • What is driving this market?
  • What are the challenges to market growth?
  • Who are the key vendors in this market space?
  • What are the market opportunities and threats faced by the key vendors?
  • What are the strengths and weaknesses of the key vendors?

GlobeCore manufactures equipment for the servicing of transformers that includes oil regeneration, purification, and filtration systems featuring the GlobeCore Process!