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Crude oil distilling method and device for pressure type feeding

A crude oil distillation and pressure-type technology, which is only applied in the direction of multi-stage series refining process, can solve the problems of unreached equilibrium vaporization rate, reduce the amount of non-condensable gas at the top of the tower, increase the mass transfer area, and reduce the equipment The effect of energy consumption

Active Publication Date: 2012-07-11
CHINA PETROLEUM & CHEM CORP +1
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

It can be seen that the vacuum distillation has not yet reached the equilibrium vaporization rate, and there is still a lot of room for improvement in the extraction rate.

Method used

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  • Crude oil distilling method and device for pressure type feeding
  • Crude oil distilling method and device for pressure type feeding
  • Crude oil distilling method and device for pressure type feeding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0039] Examples illustrate the effect of the pressure feed crude oil distillation method provided by the present invention.

[0040] as attached figure 2 As shown, the desalted and dehydrated crude oil is heated to 205°C and enters the initial distillation tower 1, and the gasoline component is extracted from the top of the initial distillation tower. , sprayed into the atmospheric tower through the pressure feeding system, and atomized into small droplets. The pressure feeding system includes a flow distribution system and atomization equipment. The flow distribution system ensures that each atomization equipment has spray droplets. The atomization equipment is a swirling atomizing nozzle. The swirl core is placed in front of the nozzle. A single-hole plate is installed on the top of the swirl core. The swirled liquid is sprayed out through the hole to form a conical liquid film. The radial velocity and angular velocity, the friction caused by the speed difference between t...

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Abstract

Provided is a crude oil distilling method and a device for pressure type feeding. The device comprises an atmospheric distillation portion and a reduced pressure distillation portion. A primary vacuum tower is arranged in front of a vacuum furnace, and tower bottom oil of the primary vacuum tower is heated and wormed by the vacuum furnace and then led into a secondary vacuum distillation tower to be distilled, wherein all of an atmospheric tower, the primary vacuum tower and the secondary vacuum tower adopt a pressure type feeding system to atomize raw materials into liquid droplets to be sprayed into the distillation towers. By means of the method, the raw materials are atomized into the liquid droplets to be sprayed into the distillation towers, thereby increasing vapor-liquid interphase mass transfer area and improving vaporization ratio of a fractionating tower vaporized section. The primary vacuum tower is arranged in front of the vacuum furnace, an extracted portion comprises light components, and the heat load of a heating furnace and the device loss can be reduced under the condition that processing amounts at the reduced pressure distillation portion are the same.

Description

technical field [0001] The invention belongs to the field of petroleum refining, more specifically, to a crude oil atmospheric and vacuum distillation method and equipment. Background technique [0002] Atmospheric and vacuum distillation of crude oil is the first process of crude oil processing, which provides raw materials for subsequent processing units in refineries and directly provides some products. The pros and cons of the design and operation of crude oil distillation units will have a great impact on the product quality, product yield and economic benefits of the refinery. On the premise of ensuring the product quality, increasing the extraction rate of the atmospheric distillation unit can make the light components be extracted from the atmospheric tower as much as possible, and will not enter the vacuum tower again. On the one hand, more light fractions can be obtained, and on the other hand On the one hand, it can reduce the load of the vacuum furnace and the v...

Claims

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Application Information

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IPC IPC(8): C10G53/02
Inventor 张占柱秦娅毛俊义袁清侯栓弟黄涛张同旺王少兵唐晓津朱振兴渠红亮
Owner CHINA PETROLEUM & CHEM CORP
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