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Packed extraction tower, application thereof and residual oil solvent deasphalting method

A technology for extracting solvent and extraction tower, applied in the field of separation equipment, can solve the problems of insufficient separation effect, low mass transfer efficiency, etc., and achieve the effects of avoiding flow dead zone, large liquid flooding flux, and improving uniformity.

Pending Publication Date: 2021-02-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the existing packing components, some have low mass transfer efficiency and insufficient separation effect; some are designed with fine structures such as more tongues, which can promote the breakage of droplets and help improve mass transfer efficiency, and the higher the opening ratio Higher, the more conducive to improving mass transfer efficiency

Method used

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  • Packed extraction tower, application thereof and residual oil solvent deasphalting method
  • Packed extraction tower, application thereof and residual oil solvent deasphalting method
  • Packed extraction tower, application thereof and residual oil solvent deasphalting method

Examples

Experimental program
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Effect test

specific Embodiment approach

[0030] In one aspect, a packed extraction tower provided by the present invention is composed of a shell, a raw material inlet positioned at the middle of the casing, an extraction solvent inlet positioned at the bottom, an outlet for the extract phase at the top of the tower, an outlet for the raffinate phase at the bottom of the tower, and an extraction structured packing, The extraction structured packing is packed in the shell;

[0031] The extraction structured packing is composed of one or more extraction packing units spliced ​​together; the extraction packing unit is composed of at least two groups of obliquely staggered grid sheet groups, and the angle between adjacent grid sheet groups is 20-120°, The grid sheet group is composed of grid sheets parallel to each other, the angle between the grid sheet and the horizontal plane is 0-90°, and the cross section between the adjacent grid sheet groups is provided with a bar, the bar Parallel to one of the grill sheet groups...

Embodiment 1-4

[0062] Embodiments 1-4 illustrate the effects of the packed extraction tower provided by the invention and the method for solvent deasphalting by thermal model experiments.

[0063] Attached figure 2 For the extraction structured packing shown, there are small holes on the grid sheet of the grid sheet group, the opening rate is 5.7%, the diameter of the small hole is 4mm, the distance between adjacent holes is 20mm, the maximum width of the grid sheet is 10mm, and the thickness The distance between two adjacent grid sheets in the same layer is 10mm. In the same layer, the width of the retaining strip is 4mm, the distance between the retaining strip and two adjacent grid sheets is 3mm, and the retaining strip is located on the cross section formed by the adjacent grid sheet groups. The width of the upper arc of the small hole is 4mm, and the radius is 4mm.

[0064] The structured packing is applied in a solvent deasphalting extraction tower, the diameter of the extraction to...

Embodiment 2

[0069] The raw material that adopts, experimental procedure, process condition are identical with embodiment 1, and the extraction tower structure that adopts is substantially identical with the extraction tower in embodiment 1, and difference is that coalescing packing section is not set in the extraction tower.

[0070] The experimental data show that the yield of deasphalted oil is 64.9%, and its properties are shown in Table 2.

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Abstract

The invention relates to a packed extraction tower, application thereof and a residual oil solvent deasphalting method. The packed extraction tower is composed of a shell, a raw material inlet locatedat the middle part of the shell, an extraction solvent inlet located at the lower part of the shell, a tower top extraction phase outlet, a tower bottom raffinate phase outlet and extraction structured packing; the extraction structured packing fills the shell of the extraction tower; and the extraction structured packing is grid type packing. The packed extraction tower provided by the inventionis suitable for a heavy oil solvent deasphalting process, and is high in separation efficiency and large in treatment capacity.

Description

technical field [0001] The present invention relates to a kind of separation equipment in oil refining and chemical industry and its application method, more specifically, relates to an extraction separation tower and its application method. Background technique [0002] Petroleum resources around the world are showing a trend of heavy and inferior quality, and the environmental protection regulations of various countries are becoming increasingly stringent, which puts forward higher requirements for the light and clean refining products, clean and low-carbon refining process, heavy oil Lightweight technology is getting more and more attention. Solvent deasphalting is one of the important ways to lighten heavy oil. The residual oil can be separated to obtain deoiled bitumen rich in asphaltenes and metals and high carbon residue, and deasphalted oil with low impurity content and low carbon residue. The combined process It is very attractive in the deep processing of heavy oi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D11/04C10G21/00C10G21/14C10G21/28C10G21/30
CPCB01D11/04B01D11/0492B01D11/0484C10G21/003C10G21/14C10G21/28C10G21/30
Inventor 唐晓津鲍迪任小甜朱振兴
Owner CHINA PETROLEUM & CHEM CORP
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