Articles

November 2, 2017

Transformer Tap Changers

Power transformers convert one voltage to another without changing frequency. The main parameter of transformer is transformation ratio, i.e. the ratio between primary and secondary coil voltages or the number of turns in the windings. To change transformation ratio, a tap changer is used, which changes the number of turns engaged at a given moment. Such devices allow keeping nominal voltage in the coils, if the primary or...


March 30, 2017

Refrigeration Compressor Oil

Compressor oil. Oil in refrigeration compressors is in constant contact with the coolant. This factor and the operation in various environment sets specific requirements for the oil. The oil for refrigeration compressors is made from naphtha oil and synthetic oil with low pour point and high chemical stability.

The chemical stability of compressor oil is its inability to react with coolants that are based on fatty halogenated...


Purification, clarification and regeneration of mineral oils and diesel fuel by the UVR-450/16 unit

Mineral oils. Industrial oil, turbine oil, transformer oil and compressor oils are used in difficult conditions of high temperatures, exposure to air, mechanical contamination, contamination with water etc. Over time, these oils lose their performance properties and need to be replaced or regenerated.

As for other petroleum products, for example, diesel fuel may lose its properties in long storage storage under exposure to sunlight, moisture, air and...


What to do with waste oil?

How to dispose of waste oil? If you are looking for an answer to this question, then you have a stock of oil larger than just one liter, formed as a result of operation of power transformers, rolling mills, turbines and other industrial equipment.

In fact, the problem of disposal of waste oil is not new, and it is not losing its relevance. The fact is that...


Selective Refining of Oil Fractions

It is known that crude oil cannot be used as fuel. It must be processed before a marketable product is obtained, one of the stages of such processing is selective refining.

The general meaning of selective refining is the processing of crude oil or derivatives to improve the quality of oil fractions. Practically, this is done by selective interaction of solvents on the components of “black gold”....


Oil Cracking Is...

Cracking is a widely used chemical method of processing crude oil. The process emerged as a consequence of increased gasoline demand and increased the yield of gasoline fractions of oil to 50-60%. Cracking can be applied not only to crude oil, but also to its distillate fractions.

There are thermal and catalytic cracking processes. In the former case, the process occurs at high temperature, in the latter...


Desulfurization of diesel fuel

Desulfurization of diesel fuel. Thus, the consumer receives fuel with strictly limited sulfur content. Obviously, the less sulfur, the more expensive the product. A way to save on the fuel bill is to take lower grade diesel fuel and process it to satisfy the requirements of the vehicle fleet.

GlobeCore offers the desulfurization process based on the AVS-150 magnetic nano-mill and the UVR unit.

The process...


GlobeCore Diesel Fuel Desulfurization Unit

Diesel Fuel Desulfurization. Sulfur is a common component in crude oil, where it can be present both in elementary form and in the form hydrogen sulfide and organic substances, such as disulfides, mercaptan etc. Generally, the influence of sulfur and its compounds on oil products is negative, due to its corrosive properties. That is why it is recommended to eliminate sulfur and hydrogen sulfide and limit the content...


Crude Oil Reforming

In general case, crude oil reforming is the process of converting normal and cyclic paraffins in oil to aromatic paraffins. The process occurs at 500-550ºС in the presence of catalysts. Reforming is necessary to improve the quality of low octane gasoline by increasing the amount of aromatic hydrocarbons.

No refinery operates without catalytic reforming. Since most straight run gasolines are low octane, additional processes are required. Reforming...


January 6, 2017

Heavy Fuel Oil: Considerations on Use

Winter brings the need to heat buildings. Natural gas and diesel fuel are relatively expensive to use as heat sources, so people more and more look at alternatives. This is a good time to discuss heavy fuel oil. The main advantage of this product is ease of storage and transportation.

Heavy fuel oil is made from straight run diesel and secondary distillation fractions (distillates of catalytic and...


December 27, 2016

How many cubic meters of oil can be regenerated with one load of sorbent in the UVR-0.1?

When using the UVR-0.1 oil cleaning and regeneration unit, the most frequent questions are the average amount of sorbent used and the amount of oil processed by this sorbent.

The UVR units for cleaning and regeneration of oil use a combination of thermal vacuum filtration with a special sorbent

The main feature of this equipment is the ability to work with various types of oil:...


UVR: the best solution to the problem of fuel and oil regeneration

The question of oil regeneration generally arises after the oil has been severely polluted and changed its chemical composition as a result of long-term operation or storage.

Even ordinary dust or micro organisms can significantly reduce the quality of diesel fuel; and metal shavings in industrial oil can cause failure of expensive equipment.

What should also be said about transformer oil?  It serves as insulation and...


October 12, 2016

Waste Oil Application

Today, the problem of waste oil is quite acute and requires effective methods and approaches to its solution.  To understand the full extent of the problem, it is enough to look at only one fact: the amount of waste oil drained into water bodies and soil significantly exceeds the amount of the same substances entering the environment in case of accidents.  The financial aspect is equally important.  The...


October 12, 2016

How to Improve Diesel Fuel

None of the literature on diesel fuel disproves the benefits of filtration.  This process helps to get rid of dust and dirt particles that can penetrate into supply system through nozzles.  It is caused by periodic opening and closing of the fuel tank.  When channels and spray nozzle holes are clogged, insufficient amount of fuel is supplied to the combustion chamber, resulting in reduced engine power.

Purified...


Diesel fuel: arctic, winter, summer

Diesel fuel is one of the main types of fuel used in industry and agriculture.  One of the major drawbacks of its use is the need of transition from summer to winter types and vice versa at a significant change in weather conditions.  The main difference is in the ambient temperature limit at which diesel fuel still has the required performance properties.  For example, winter-type diesel fuel can...


October 5, 2016

Transformer oil regeneration unit UVR-L (laboratory)

The UVR-L laboratory regeneration unit is designed to purify fuels and regenerate oils with viscosity below 70 cSt at 20ºС.

This equipment is very versatile, capable to treat practically any type of oil products including transformer, industrial and turbine oils, as well as fuel oils, gas condensate and diesel fuels.

The laboratory version of this product can be used by either research facilities or companies which already own larger UVR units.

The potential...


Diesel fuel filters

The main purpose of the filter is to purify diesel fuel by removing contaminants which may enter oil products (dust, water, loose particles of construction materials. A fuel filter is a must in any vehicle to protect the fuel system and the motor. The below article looks into the kinds of filters available for diesel fuel.

Filtration rating divides filters into coarse and fine. The former are used for pre-treatment of...


Purification of diesel fuel: filtration, separation and sorbents

Diesel fuel is a widespread oil product, so its use is always in the spot light. According to regulations, diesel fuel must not contain particles larger than 5 micron and water.

Particulate matter may enter the fuel in the process of transportation and storage. Water enters the fuel most often due to its contact with humid air or a temperature drop, followed by condensation.

Using contaminated fuel may cause increased wear of...


Processing of heavy oil

Heavy oil is a product of separation of secondary refining products, boiling at 350-360ºС, from the oil. This is a viscous dark brown substance.

Pyrolysis treatment of heavy oil consists of two stages. At the first stage, the substance is heated, separating the liquid part. The output is the pyrolysis oil, which is a long distillate, similar to heavy fuel oil in its properties. Selling this product is more lucrative than...


Diesel fuel purification centrifuge

A centrifuge is a device which allows to remove contaminants from oil products relatively rapidly. Centrifuge can separate small size contaminants from diesel fuel, which might not be possible to remove but other methods.

Centrifuges are now widely used for purification of oils used in aircraft, vessels and ground vehicles. Centrifuge operation requires a lot of electric power, and are mostly efficient when used on viscous fuels and pre-heating.

Contaminants and water...


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обновлено: September 8, 2017 автором: globecore