A new type of crude oil has been used, one with a lower specific gravity. What should be noted
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A new type of crude oil has arrived at our plant; its specific gravity is 830 and its oil yield is 92%. What should be taken into consideration in our atmospheric and vacuum distillation units? ? How to operate it?
It mainly depends on whether the designs are consistent; if not, the oil yield will be high, and processing issues should be considered. For other aspects, adjustments can be made based on quality.
1. The operation of electrodesalination – whether the current and pressure involved in this process can be maintained properly. 2. Whether the top pressure of the initial distillation tower (at atmospheric pressure) can be kept under control. 3. Whether such severe lightening of the product mixture is due to significant differences from the design, and whether the thermal balance in each tower can be maintained. (Top of tower temperature, pressure) 4. Whether the heating furnace load is sufficient 5. Pump load for light oil 6. Whether the final temperature of heat exchange can be maintained, etc. . .
Is there a primary distillation tower? The pressure changes at the top of the atmospheric pressure tower need to be taken into account
High yields of diesel and gasoline, along with low yields of residue, affect the electrodesorption temperature as well as the desalination efficiency
Light crude oil has a significant impact on the atmospheric distillation column and the vacuum distillation column. Firstly, the yield of light oils increases; it is necessary to consider whether the top pressures and temperatures in these two columns can be controlled. Secondly, the cooling load associated with the extraction of products from various side streams and the reflow at intermediate stages increases. In atmospheric and vacuum distillation processes, the various heat exchange processes and cooling loads affect the operation of the control devices. Especially during summer when the cooling load is high, if the yield of light oils increases significantly, it becomes uncertain whether the cooling requirements for the products extracted from side streams and the thermal balance within the columns can be maintained. The load on the atmospheric furnace increases, while the load on the vacuum furnace decreases accordingly
The light oil yield will increase; an increased gas velocity in the initial distillation column and the atmospheric column can slightly raise the column pressure, so it is important to adjust the temperature at which the residue is sent out promptly