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Lubricating oil furfural refining device based on partition plate tower and technology thereof

A furfural refining and lubricating oil technology, which is applied in the petrochemical field, can solve the problems of complex refining process and large number of equipment, and achieve the effects of reducing fluid flow resistance, compact equipment and convenient automation control.

Inactive Publication Date: 2022-05-13
XUZHOU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In my country, furfural is generally used as a solvent. Since furfural and water will form an azeotrope, this process is more complicated than the N-methylpyrrolidone (NMP) refining process commonly used abroad, and the number of equipment, especially the number of various towers is relatively large.

Method used

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  • Lubricating oil furfural refining device based on partition plate tower and technology thereof
  • Lubricating oil furfural refining device based on partition plate tower and technology thereof
  • Lubricating oil furfural refining device based on partition plate tower and technology thereof

Examples

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Embodiment 1

[0043] In the lubricating oil furfural refining unit with an annual output of 500,000 tons of light lubricating oil in a petrochemical company, the original unit is a conventional lubricating oil furfural refining unit, which adopts a double-tower countercurrent extraction process. The process flow chart is shown in figure 1 , the composition analysis of raw oil is shown in Table 1.

[0044] Modified devices such as figure 2 as shown, figure 1 The first-stage extraction tower 6a and the second-stage extraction tower 6b of the Zhongyuan process are integrated into figure 2 The stripping tower 6 of existing technology, the raffinate stripping tower 9a of original technology and extract liquid stripping tower 9b are integrated into the stripping tower 9 of existing technology, the furfural drying tower 17a of original technology and furfural dehydration The tower 17b is integrated into the furfural dehydration drying tower 19 of the existing technology. The extraction tower ...

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Abstract

The invention discloses a lubricating oil furfural refining device based on a partition plate tower and a process thereof, which are characterized in that on the basis of a traditional process, a novel partition plate tower is integrated with a plurality of towers, an extraction tower is integrated into a partition plate type extraction tower, and a raffinate stripping tower and an extract stripping tower are integrated into a partition plate type stripping tower; a furfural dehydrating tower and a drying tower are integrated into a partition plate type azeotropic rectifying tower. The device has the characteristics of small occupied area, low equipment investment cost, few operation parameters and the like.

Description

technical field [0001] The invention relates to the field of petrochemical industry, in particular to a lubricating oil furfural refining device based on a partition tower and a process thereof. Background technique [0002] The raw material of lubricating oil is vacuum distillate oil and residual deasphalted oil. In order to make the lubricating oil's viscosity-temperature property, oxidation stability, carbon residue and chromaticity meet certain requirements, it is necessary to remove the irrational components in the raw oil ( Aromatic components and polar components) to improve the quality of lubricating oil. The refining process generally uses a solvent extraction method, using a polar solvent to remove the non-ideal components in the raw oil, so that the ideal components (alkanes and cycloalkanes) in the refined oil account for the vast majority. In my country, furfural is generally used as a solvent. Since furfural and water will form an azeotrope, this process is mo...

Claims

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Application Information

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IPC IPC(8): B01D3/14
CPCB01D3/141B01D3/146B01D3/148
Inventor 何昌春周颖梅王鹏蔡可迎李昭田林葛奉娟
Owner XUZHOU UNIV OF TECH
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