Tag Archives: oil reclamation

Oil Reclamation and Sorbent Reactivation

GlobeCore Fuller Earth sorbent

Oil Regeneration systems that employ a “Fuller’s Earth” sorbent filtering system in regenerating transformer oils raise the important question;  What do we do with the used Fuller’s Earth?  Can the sorbent material be re-used or do we just dump it in the trash?

GlobeCore has the answer and the solution to the sorbent disposal problem.

GlobeCore has two types of oil regeneration machines:

  • the first type of unit (CMM-R series) utilizes a Fuller’s Earth system in which the sorbent is automatically “Re-Activated” by the regeneration unit itself
  • and the second type of unit (UVR series) utilizes a manual sorbent reactivation system.

Fuller’s Earth is a mineral that has a very large surface area of high chemical activity.  During the regeneration process, the high activity chemical sites on the surface of the material become blocked by polar compounds.  They are then rendered inactive when they have processed the maximum amount of contaminated oils, fluids or fuels.

With older Fuller’s Earth Systems, the spent sorbent material had to be removed and disposed of after every regeneration cycle making the regeneration process time consuming, labor intensive, very expensive and very damaging to the environment.  There was no efficient and cost effective way to Re-Activate the sorbent materials, so they were discarded. 

Regeneration can be defined as meaning; “the process of cleaning our polar compounds,” e.g. from insulating oils. The oils and fluids were being regenerated, but the sobent filtering materials amounted to nothing more than costly waste products at the end the regeneration process.  The industry needed a way to re-use the sorbent materials by Re-Activating the sorbent qualities so that the Fuller’s Earth could be used over and over again like the oil it was regenerating rather than being discarded into landfills and possibly contaminating ground water.  The problem was how to do this without a costly, time consuming, and labor intensive process.

Times have changed, technologies have advanced, and GlobeCore engineers have developed a new industry leading technology that allows oil regeneration and automatic sorbent Re-Activation to be combined into one piece of equipment.  So now we have a machine that can regenerate oil and re-activate its own sorbent material automatically after each regeneration cycle.  The GlobeCore engineers have eliminated all three elements that prevented the widespread use oil regeneration equipment; high cost, lost time, and intensive labor.

The GlobeCore Process utilizes a Fuller’s Earth sorbent filtering process that purifies and regenerates transformer oil and other fluids and fuels and reuses the same sorbent materials over and over again up to 300 regeneration cycles.  The regeneration process is now faster, more efficient, far less expensive and much more environmentally friendly because it greatly reduces waste and preserves precious resources. 

GlobeCore engineering is always looking for and finding solutions that reduce costs, increase efficiency, provide value and protect the environment.  The automatic Fuller’s Earth reactivation system is another example of GlobeCore’s worldwide industry and environmental leadership in the transformer maintenance equipment industry.

Oil Reclamation Systems

oil reclamation

The main purpose and benefit of transformer oil reclamation is to completely restore the insulating oil back to new like condition without having to buy new oil or dispose of old oil.

The GlobeCore Process of oil reclamation is performed by extracting water/moisture, acids, particulate matter and other undesirable contaminates such as unsaturated hydrocarbons, asphalt-resinous substances, sulfur and nitrogen compounds from the oil.  The process of regenerating transformer oil uses various technologies based on (1) physical, (2) physico-chemical and (3) chemical processes.

There are several chemical methods of deep oil reclamation.  The most common one consists of  an acid-alkaline-earth method.  This method of oil purification is based on treating the oil with sulfuric acid.  The sulfuric acid acts to compact and bind all the unstable compounds into an acid sludge oil.  Tar is then removed by “settling” and the remains of the sulfuric acid and organic acids are neutralized by the use of an alkali treating oil.  Following that, the oil is washed with distilled water, dried and treated for complete neutralization with bleaching earth.  After final filtration, the oil becomes completely regenerated.

Transformer Oil Recloil reclamation unit CMM 6R with degassingamation Methods

  • Mechanical – To remove from the oil moisture/water and solid contaminants (filtration, centrifugal action, sludge removal);
  • Thermo-physical – evaporation, vacuum distillation;
  • Physico-chemical – coagulation, adsorption;
  • Chemical – if three methods are not enough, this method involves the usage of much more difficult and costly equipment.

Physical Methods of Reclamation of Transformer Oil

The physical method of transformer oil reclamation is usually referred to as purification by removing mechanical impurities and water, i.e. drying.

All Transformer oils, (whether new, old, or operational), that are contaminated by mechanical impurities and water, can be corrected in most cases by one of the following reclamation methods as long as there have been no changes in its chemical properties or other the significant changes that have altered the basic qualities of the oil.  Undesirable contaminates that deteriorate the initial properties of the oil, can be dissolved in the oil or found in the oil in an undissolved state.  Thanks to mechanical cleaning, these undesirable  contaminates can be removed from the oil.

Oil Drying

The most advanced and cost effective method of oil drying is by spraying the oil under vacuum at a low temperature.  The solution of the oil and water is sprayed through a nozzle that is placed in a tank of water in which “under-pressure” is created.  Thus the free and dissolved moisture and the dissolved air are removed from oil.  When the oil is “thin dispersed” it quickly gives up its moisture. Dry oil, as droplets, then fall to the bottom of the vacuum tank.

The efficiency and speed of drying rate is further increased by heating the oil.  This increases the evaporation process of the water.  Oil loss from evaporation is insignificant.  The rate of water evaporation from oil will also depend on the difference between the pressure of saturated steam at a given temperature and the residual pressure in the vacuum tank.

Download catalog in pdf (eng)

 

GlobeCore’s engineer with a collegue from Saudi Arabia after successful start of equipment

The choice of the plant was far from random. The CMM-10 is a versatile unit, allowing heat and vacuum treatment not only of transformer oil, but also turbine, industrial and other oils. The oil is restored by removing water, gas and various solid particles.

The CMM-10 plant has a wide range of application. If can be used for installation, repairs and operation of oil filled high voltage equipment, sealed or breathing. up to 1150 kV.

Besides, the CMM-10 can successfully heat equipment with hot oil, introduce nitrogen into the oil and add oil into high voltage systems.

The unit is protected from overloads, overheating and short circuit of controls, pumps, drives, lights and heaters.

The CMM-10 stops in case of phase skipping, incorrect phase connection, as well as overheating of oil from or the oil heater. Light and sound alarms are available.

The plant is simple in operation and can be used both indoors and outdoors.

GlobeCore representatives particiapted in a seminar in Jordan

The company’s professionals attended a seminar in Amman, Jordan, on 15 April. The meeting was focused on equipment to improve efficiency of transformer operation.

GlobeCore’s Daria Shaddad and Yevheniy Svirid presented the main types of equipment which the company can offer for Jordan’s power plants.

Regeneration of Oil

Oil Regeneration today has become a very interesting and important subject.  Oils can be regenerated in a number of ways by different equipment and to varying degrees of purification.

GlobeCore has developed and built oil regeneration equipment for many different applications that involve regeneration and purification.  The equipment varies widely in terms of number of applications and the degree of regeneration desired by the operator and include the following:

  • oil regeneration
  • heat and vacuum purification of oil,
  • purification of oil by adsorbents
  • drying of transformer windings,
  • dehydration of oil,
  • degassing of oil,
  • reactivation and preparation of sorbents, including full regeneration of MINERAL oils with color lightening.

The following is a brief list of GlobeCore’s equipment for oil regeneration, putificaton and other industrial applications.

  • Themovacuum oil purification units, mobile oil plants: СММ-0.6; СММ-0.7(Р); СММ-0.6; СММ-1.0; СММ-1.7; СММ-2.2; СММ-4.0; СММ-4.3 and some other models;
  • Comprehensive oil restoration units, including heating, nitrogenation, drying and filtration of insulation oils: CMM-3, CMM-4, CMM-5, CMM-5М, CMM-6, CMM 10-10, CMM 10-10В, CMM 10-10Л, CMM 10-10М, CMM-12B, CMM-12B1, CMM-12B2, CMM-12B3, CMM-14B У1, CMM-14B1, CMM-14B2, CMM-10-3, CMM-10-3Е, UDV-2М, PDV-Е and other range.
  • units for purification, drying and removal of solids from transformer and turbine oils – MCU-2-U1, MCU-4-U1, MCU-4С-U1,  MCU-4А,  MCU-4СА,  MCU-4C, MCU-4CF, MCU-4CS,  MCU-4CSA, MCU-А, MCU-С, MCU 4Р-N, MCU 4Р-NС, MCU 4Р-NA, MCU 4Р-NСА,  BC-N, MCU-7, FSM-2, FSMB-110М etc;
  • Sorbent regeneration systems– BR, PS-1, PS-1А,  PS-1Е, BRPS, MCU-4Р-BR, zeolite drying cabinet
  • Systems and vacuum sections for drying of solid insulation of power transformers – “Iney-4″, ” Iney-4М”, ” Iney-5″, ” Iney 5М”, ” Iney-6″, ” Iney-4.1″, ” Iney-4.1М”, ” Iney-4.2″, ” Iney-4.2М”, vacuum units BV-1 and BPR;
  • Units for drying of air to dew point below -50°С – “Sukhovey”, ” Sukhovey-4″, ” Sukhovey-5″, ” Sukhovey-4Е” with two independent heaters
  • transformer and transformer oil heating units: NTML, NTML-160М, NTML-80М, NTML-120М, NTML-200М, NTML-240М, NTML-150Е, for parameters of processed oil: solid content no more than 5 (10) ppm, filtration from 5 to 20 micron
  • oil filtration systems – FUM-P, FUM-А, customized drying and solid removal systems for mineral oils up to 50 m3/hour capacity, purity class from 7 toо 11, filtration ratios from 20 to 2000, filtration fineness 1, 3, 5, 10, 20 and 40 micron;

The full range of GlobeCore products is presented in the attached file, and can also be seen on the company’s website at www.globecore.com

The company has a global dealership network, and the products are supplied to more than 80 countries world wide.  Certified explosion protection option is available. Production certified in accordance with ISO 9001 – 2000.

Transformer Oil Drying– An Integrated Approach

Various international and local regulations contain instructions and specifications on oil quality.  Additional regulations instruct where, when, and how oils can be used and how used oil can be disposed of legally.  In order to comply with the myriad of regulations and to keep the environment protected from harmful emissions, and/or hazardous spills, a business may be required spend large sums of money.  The timely replacement of transformer oil, environmental controls, preventive maintenance and corrective can impose even more costs.

One way to avoid, and possibly eliminate, some of these costs is to maintain your transformers in top working condition.  This can be accomplished by paying close attention to the purity levels of your transformer insulating oil with an oil analysis program.  The only way to maintain (or recover) the high dielectric strength of the transformer’s insulting oil is through the process of deep drying and degassing using modern purification and “Regeneration” technology.

Efficient oil drying and removal of solved gases requires vacuum treatment.  Water and air are removed faster when the atmospheric pressure is lower and the temperature is higher (to a limit). The optimal vacuum process parameters are 80C/176F temperature and 133 Pa/0.01929 psi atmospheric pressure.

The best modern designs for oil drying and regeneration are more economical due to unification of many processes and a more versatile purification system all contained in one piece of equipment.  Oil purification, drying, degassing and regeneration used to require several different types of processing equipment.  GlobeCore engineers have developed the industry leading GlobeCore Process that has combined the purification and drying process in one machine that now fully regenerates all the oil in the transformer.

The CMM-R and CMM oil regeneration units manufactured by GlobeCore are designed for drying, degassing, removal of solids, nitrogenation and heating of transformer oil from power transformers and other electric equipment.  In other words, they perform the complete oil regeneration process that combines purification of oil and the drying and cleaning of solid core insulation with one machine and one operator.  It is a two for one process known as the GlobeCore “Two for One Engineering Miracle.”

The CMM-R units are equipped with electric heaters, oil and vacuum pumps, fine filters and adsorption sections. They are used for regeneration of oxidized transformer oil and can be connected directly to energized transformers.

A unique distinction of the modern regeneration units is that there is no atomization of oil or thin-film insets in the vacuum chamber, instead, “activator filters” are used, which allows the spreading of the oil for processing.  The design allows for the elimination of bulky nozzles and sprayers and prevents ingress of oil into the vacuum line, greatly increasing the process consistency.

The UVR regeneration and oil reclamation system ensures a very high degree of efficiency of oil reclamation. The regenerated oils are consistent, resistant to oxidation and do not darken or accumulate odors.  The complete purification, drying, degassing and regeneration units offer the full range of services for transformer oil maintenance and oil regeneration.

Its time to get with the Process, the GlobeCore Process!

Globecore has received an order for Purification Plant and Mobile Transformer Oil Reclamation

“PSC” Ltd, GlobeCore’s partner in Middle East, provides oil reclamation and purification services to Kuwait electric authority. Company plans to extend its services to Saudi Arabia and Qatar with the purchase of this new GlobeCore CMM-R Transformer Oil Reclamation Plant. GlobeCore Sales Manager Jay Pruglo delivers a presentation on Transformer Oil Reclamation and Purification Technology and Equipment in Qatar.

Globecore Transformer Oil Reclamation Plant UMV-4/7 f

Middle East Partner Sells Transformer Oil reclamation Plant

“PSC” Ltd, GlobeCore’s partner in Middle East, provides oil recycling and purification services to Kuwait electric authority. Company plans to extend its services to Saudi Arabia and Qatar with the purchase of this new GlobeCore CMM-R Plant for Transformer Oil Reclamation at electricity power substations.

Globe Core Sales Manager Jay Pruglo delivers a presentation on Transformer Oil Reclamation and Purification Technology and Equipment in Qatar.