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Process for separating and reforming C10 aromatics by using partition plate tower and method thereof

A technology of C10 aromatics and partition tower, which is applied in the field of separation and reformation of C10 aromatics in a partition tower, can solve the problems of large equipment investment, low product yield, high energy consumption, etc., to improve product purity and yield, reduce The effect of energy consumption and broad application prospects

Pending Publication Date: 2021-08-13
TIANJIN JITAI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a process and method for separating and reforming C10 aromatics in a partition tower, which avoids the problems of large equipment investment, high energy consumption and low product yield in the existing distillation method

Method used

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  • Process for separating and reforming C10 aromatics by using partition plate tower and method thereof
  • Process for separating and reforming C10 aromatics by using partition plate tower and method thereof
  • Process for separating and reforming C10 aromatics by using partition plate tower and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The reformed C10 aromatics raw material 101 enters between the feed-side rectification section 12 and the feed-side stripping section 13 of the first dividing wall tower 1, and the components heavier than the middle distillate are removed in the feed-side rectification section 12, The top vapor phase enters the public rectification section 11, and after the top vapor phase 102 of the public rectification section 11 enters the condenser 3 for condensation, part of the liquid returns to the top of the tower as reflux liquid 103, and other liquids are extracted as light component products, and the public rectification The function of section 11 is to carry out the separation of tower top light component and middle distillate; The stripping section 13 on the feed side removes the components lighter than the middle distillate, and the lower liquid on the feed side enters the common stripping section 16, and in the common stripping section 13 Distillation section 16 separates ...

Embodiment 2

[0045] The reformed C10 aromatics enter the durene enrichment tower (the first dividing wall tower 1), the top of the tower is 1# aromatics solvent oil, the side line extracts the durene enriched fraction, and the tower bottom material enters the aromatics solvent oil cutting tower (the first Two partition towers 2), the top of the tower is 2# aromatic hydrocarbon solvent oil, 3# aromatic hydrocarbon solvent oil is extracted from the side line, and the tower kettle is heavy components.

[0046] Draw the following table by embodiment 2:

[0047]

[0048]

[0049] From the comparison in the above table, it can be known that adopting the partition wall tower scheme can save energy by about 37%, and at the same time, due to the substantial reduction in the number of equipment, the investment in the device is also greatly reduced.

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Abstract

The invention relates to a process for separating and reforming C10 aromatics by using partition plate tower and method thereof. The process comprises a first dividing wall column and a second dividing wall column, and the interior of the first dividing wall column and the interior of the second dividing wall column each comprise a common rectifying section, a feeding side rectifying section, a feeding side stripping section, a product side rectifying section, a product side stripping section, a common stripping section and a partition plate, and a condenser is arranged at the other end of the first dividing wall column; according to the method, enrichment of C10 aromatics can be completed in the single first dividing wall column or multiple first dividing wall columns and second dividing wall columns, meanwhile, the purpose of byproduct aromatic solvent oil and naphthalene enrichment components is achieved, the energy consumption in the rectification process can be reduced by 30% or above, meanwhile, the product purity and yield are improved, and the method has wide application prospects and good economic benefits in the rectification production process of the reformed C10 aromatic hydrocarbon, and is convenient to popularize and use.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a process and method for separating and reforming C10 aromatic hydrocarbons in a clapboard column. Background technique [0002] The reforming of C10 heavy aromatics mainly comes from the wide-fraction catalytic reforming unit of the polyester raw material factory. The components are quite complex, with more than one hundred components, of which the mass content of durene is 7-10%. For the comprehensive utilization of reformed C10 heavy aromatics in traditional technology, the more common method is to cut off part of the light components to make solvent oil, then extract durene and naphthalene, and use the remaining residue as fuel. In the rectification process of reforming C10 heavy aromatics, batch rectification is generally used to cut into different fractions such as C10 light components, durene-rich liquid, naphthalene-rich liquid, and residual oil. Ev...

Claims

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Application Information

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IPC IPC(8): C07C15/02C07C7/04
CPCC07C7/04C07C15/02
Inventor 朱怀工王燕
Owner TIANJIN JITAI TECH
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