Density of oil and its physical properties

Density of oil and its physical properties

The modern requirements thatquality of oil, are high enough. Therefore, its production constantly requires perfection, so that oil products meet all standards and norms. The relevant organizations control the production and the final product.

The system of standardization, which is developed by the state, is the standard on which all producers are equal. Compliance with its terms is mandatory for all.

Oil and other petroleum products is a liquid mixture,having a complex composition of hydrocarbon compounds and closely boiling hydrocarbons, as well as heteroatoms of oxygen, nitrogen, sulfur, certain metals and acids.

One of the qualitative indicators isdensity of oil. This is the amount of the mass at rest, which is in unit volume. The density of petroleum products and its determination is a prerequisite for an easier calculation of their mass quantity. This is due to the fact that accounting for oil in units of volume is not very convenient, because this indicator can vary depending on the temperature change.

The density of oil is measured in kilograms per onecubic meter. You can easily determine the mass, knowing the volume and density. The mass, unlike the volume, does not depend on the temperature of the product.

Usually, such an indicator asrelative density of oil. It is defined as the ratio of the mass of oil to the mass of pure water, which is taken in the same volume, having a temperature of + 4 °. This temperature level is not chosen by chance. Water in this case has the greatest density, which is equal to 1000 kilograms per one cubic meter. In order to determine the relative density of oil, its temperature should be + 20 °. In this case, it can be from 0.7 to 1.07 kilograms per cubic meter.

There are other physical properties of oil.

The specific weight is the weight that one hasvolume unit. In another way, this is the force with which one unit of the volume of this substance is attracted to the earth. That is, it is the density multiplied by the acceleration due to gravity.

Another notion is the relative specific gravity. The value of this indicator is equal to the numerical value, which the relative density has. We use it to calculate this indicator.

The specific gravity and density of oil can varytheir values ​​when the temperature changes. Therefore, in order to calculate the density found at the same temperature by the same index with other temperature data, corrections for the density changes as a function of the temperature change must be taken into account.

The density of oil, calculated in practice, is considered to be an additive quantity. This is due to the fact that this indicator can be obtained as an average for several petroleum products.

For each oil production region, its physical properties are characteristic. So, for example, the density of oil in the Tyumen region on average ranges from 825 to 900 kilograms per cubic meter.

Study of the physical properties of this productit is necessary not only for its rational use for economic purposes and for sale on the world market. Sometimes this is very important in eliminating the environmental disasters that result from the release of oil products into the environment and avoiding many mistakes.

Thus, when an accident is eliminated, attempts are madeto eliminate the oil stain with the help of arson, not taking into account that the physical characteristics of this product could change as a result of interaction with the environment. Therefore, these circumstances should be taken into account when cleaning water surfaces. This is a very important factor that should not be ignored.



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