Multi-vaporization feeding method of oil product fractionator
A feeding method and fractionation tower technology, applied in fractionation, hydrocarbon distillation, petroleum industry, etc., can solve the problems of excessive mist entrainment, large vapor phase load, etc., achieve improved chromaticity, reduce vapor phase load, and improve separation effect of ability
Active Publication Date: 2010-06-02
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology
It is expected to solve the problems of excessive vapor phase load and excessive mist entrainment in the vaporization section of the fractionation tower caused by the existing one-time vaporization feed through multiple vaporization feeds, so as to balance the vapor-liquid phase load in the tower and improve the product quality. The quality and processing capacity of the fractionating tower, and the purpose of reducing the content of wax oil in the residual oil and improving the extraction rate
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[0023] The invention relates to a multiple vaporization feeding method of an oil fractionation tower. The feed of the fractionation tower is high-temperature oil and gas at the outlet of a heating furnace; On the line, multi-stage flash towers with different operating pressures and temperatures are added.
[0024] The high-temperature oil and gas from the outlet of the heating furnace first enters the flash tower, and the vapor phase of the flash tower enters the position above the vaporization section of the oil fractionation tower after passing through the pressure control valve, and the liquid phase of the flash tower enters the next flash tower or enters Below the vaporization section of the oil fractionation tower.
[0025] The multi-stage flash tower can have one to five stages, and the number of stages of the flash tower depends on the extraction rate of the oil fractionation tower, and is also related to the requirements of the floor space of the device.
[0026] The ...
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The invention relates to an energy-efficiency feeding method of an oil product fractionator of an oil refining atmospheric and vacuum distillation device. Different from a traditional technology, feeding of the oil fractionator is developed into multi-vaporization feeding from original once vaporization feeding. By adopting the method, under the premise of little increase of equipment investment, the invention can realize the following purposes of: (1) balancing vapor-liquid loading distribution inside the oil product fractionator and realizing higher productivity; (2) reducing vapor phase loading at a vaporization stage, entrainment and coke content of products; and (3) improving product extraction rate and reducing fuel distillated oil content in residual oil.
Description
technical field [0001] The invention relates to a process method mainly used for feeding oil fractionation towers in petroleum and chemical processing. technical background [0002] Due to the constraints of thermal cracking of coke in heavy crude oil, the traditional oil fractionation column uses a heating furnace to vaporize the feed at one time, there is no reboiler at the bottom of the tower, and the column below the feed adopts a steam stripping process. The biggest defect of this process is that the gas-liquid phase load distribution in the oil fractionation tower is extremely uneven, and the gas phase load in the vaporization section is extremely high, causing three production problems: 1) There is serious mist entrainment in the vaporization section ; 2) The tower section above the vaporization section is the bottleneck of the oil fractionation tower; 3) The wax oil content in the residual oil is high. [0003] Excessive entrainment of mist in the vaporization secti...
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Login to View More IPC IPC(8): C10G7/00B01D3/14
Inventor 刘艳升曹睿严超宇刘拥军
Owner BC P INC CHINA NAT PETROLEUM CORP