Doing anything, rational analysis and judgment is very important, an industry is good, in addition to the acceptance of the market, but also to see the actual ability of this company, and industry regulations.
Fuel oil as the last product in the refining process, product quality control has a strong specificity, the final fuel oil product formation is subject to crude oil varieties, processing technology, processing depth and many other factors. According to different criteria, fuel oil can be categorized as follows:
1. According to whether or not the commodity is formed at the time of leaving the plant, fuel oil can be divided into commodity fuel oil and self-use fuel oil. Commodity fuel oil refers to fuel oil that forms a commodity in the ex-factory segment; self-use fuel oil refers to fuel oil that is used as a raw material or fuel for refinery production without forming a commodity in the ex-factory segment.
2. According to the process, fuel oil is also called heavy oil, which can be divided into atmospheric heavy oil, depressurized heavy oil, catalytic heavy oil and mixed heavy oil. Atmospheric heavy oil refers to the refinery catalytic, cracking unit distillation of heavy oil (commonly known as slurry); mixed heavy oil generally refers to the mixture of depressurized heavy oil and catalytic heavy oil, including residue, catalytic slurry and part of the asphalt mixture.
3. According to the use, fuel oil is divided into two categories: marine internal combustion engine fuel oil and furnace fuel oil, both of which include distillate oil and residual oil. Distillate oil is generally made of straight-run heavy oil and a certain proportion of diesel fuel mixture, used for medium-speed or high-speed marine diesel engines and small boilers. The latter is mainly depressurized residual oil, or cracked residual oil or a mixture of the two, or blend into the appropriate amount of cracked light oil made of heavy petroleum fuel oil, for low low-speed diesel engines, part of the medium-speed diesel engines, a variety of industrial furnaces or boilers as fuel.
Marine residue internal combustion engine fuel oil is a large low-speed diesel engine fuel oil, its main performance is required to spray fuel atomization is good, in order to burn completely, reduce fuel consumption, reduce carbon and engine wear, and thus require fuel oil has a certain viscosity to ensure that in the preheating temperature can be reached at high pressure oil pumps and nozzles required viscosity (about 21-27 cps), usually used more is 38 ° C, the viscosity of the fuel oil, the viscosity of the fuel oil, the fuel oil and the fuel injection nozzle. The most commonly used is 38°C. Ray's No. 1 is available in viscosities of 1000 and 1500 sec. Since the fuel oil must be preheated to reduce the viscosity at the time of use, in order to ensure safe use the preheating temperature must be about 20°C lower than the flash point of the fuel oil, which is usually between 70-150°C. The fuel oil must be preheated at a temperature of about 20°C lower than the flash point of the fuel oil.
Furnace residue fuel oil is mainly used as fuel oil for various large and medium-sized boilers and industrial furnaces. Various industrial furnace fuel system work process is generally the same, that is, pumping the heavy oil from the storage tank, through the coarse and fine separator to remove mechanical impurities, and then by the preheater preheating to 70-120 ° C, preheated heavy oil viscosity reduction, and then through the regulating valve in 8-20 atmospheric pressure, by the nozzle sprayed into the furnace chamber, the fog of heavy oil mixed with the air and burned, the combustion of exhaust gases discharged into the atmosphere through the chimney.
Types of domestic products
No.200 heavy oil, No.250 heavy oil, No.180 fuel oil, No.120 fuel oil, No.7 fuel oil, industrial fuel oil, catalytic slurry, wax oil, mixed heavy oil, asphalt
Types of imported products
Refining emulsified oil, Oli emulsified oil, No.180 low-sulfur fuel oil, No.380 low-sulfur fuel oil, No.180 high-sulfur fuel oil. M100 M300.