The determination of density can approximate the quality and chemical composition of petroleum commodities. In the process of storage and transportation, if the density of petroleum commodities is found to increase or decrease significantly, it is possible to distinguish whether heavy oil or light oil may be mixed. or loss of light fraction transpiration. From the chemical composition point of view, the density of aromatic hydrocarbons is the largest, naphthenes are the middle, alkanes are the smallest, and the density of petroleum commodities containing more colloids and asphaltenes is also high.
The effect of fuel density on the performance of fuel oil. Engine power and fuel consumption rates are related to fuel density. Under the condition of the same fuel tank volume, the greater the fuel density, the more fuel you can hold and the greater the endurance. However, when the density is too large, it will affect the atomization and combustion of the fuel. Therefore, the density of the jet fuel commodity standard is requested. Petroleum instrument densitometer method is based on Archimedes principle: the buoyancy of the liquid to the object immersed in it is equal to the mass of the same volume of liquid discharged by the object. When the mass of the sample is equal to its own mass, the density meter is in equilibrium and floats freely in the sample. The greater the density of the sample, the less the density meter is immersed, and the smaller the density of the sample, the more the density meter is immersed. Because the immersion depth of the same density meter is different in the sample with different density, the density of the sample can be read out according to the immersion dividing value on the density meter. The density meter method is fast and simple, and is widely used in production and oil accounting transactions.