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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 problems such as excessive mist entrainment, large vapor phase load, etc., and achieve improved chromaticity, reduced vapor phase load, and vaporization rate high effect

Active Publication Date: 2012-10-17
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
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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

Method used

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  • Multi-vaporization feeding method of oil product fractionator
  • Multi-vaporization feeding method of oil product fractionator

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Embodiment Construction

[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; , adding multi-stage flash towers with different operating pressures and temperatures; 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 flash The liquid phase of the distillation tower enters the next flash tower or enters below the vaporization section of the oil fractionation tower; the operating temperature and pressure of each flash tower are respectively within the temperature and pressure range between the outlet of the heating furnace and the vaporization section, And decrease in sequence according to the flow sequence.

[0024] The multi-s...

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Abstract

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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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
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