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C3 separation method capable of saving energy and reducing equipment

A separation method and equipment technology, applied in the field of C3 separation, can solve the problems of increasing equipment and insufficient energy utilization

Active Publication Date: 2020-07-31
上海智英化工技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process arrangement not only does not make full use of energy, but also leads to increased equipment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: a kind of C3 separation method that can save energy and reduce equipment, carry out according to the following steps:

[0024] (1) Differential pressure delivery:

[0025] The product of the epoxidation reaction and the unreacted material are added to the C3 separation system, and the power delivered comes from the pressure difference between the pressure of the epoxidation reaction and the C3 system; relying on the pressure difference between the two, the epoxidation reactor will The material is added to the high-pressure separation tower in the C3 separation system, and the pressure difference is 4MPaG-3MPaG;

[0026] (two), process analysis:

[0027] In the high-pressure separation tower, the pressure at the top of the tower is controlled at 2.7MPaG to 3.05 MPaG, so that most of the propylene and propane components in the material can be condensed at the top of the tower, and the uncondensed gas contains ethane, a small amount of propylene, feed Light...

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PUM

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Abstract

The invention relates to a C3 separation method, in particular to a C3 separation method capable of saving energy and reducing equipment. The method comprises the following steps: differential pressure conveying, process analysis, a C3 separation process and a low-pressure depropanization tower process in order. According to the C3 separation method, operation steps are simplified and energy is saved.

Description

technical field [0001] The invention relates to a C3 separation method, in particular to a C3 separation method capable of saving energy and reducing equipment. Background technique [0002] In the epoxidation reaction, the pressure of the epoxidation reaction is about 4MPaG. Depending on the pressure difference, the product of the epoxidation reaction and the unreacted material are added to the C3 separation system, and the first one enters the high-pressure separation tower (depropanization) . The traditional method is to reduce the pressure of the epoxidation reaction from 4MPaG to 2MPaG, and fail to condense some light components (such as a small amount of propylene, light components contained in the propylene feed) in the high-pressure separation tower (depropanization) Parts, ethane, CO and CO2 produced by epoxidation, etc.) enter the deethanizer tower. In the deethanizer tower, in order to recover the unseparated propylene, the pressure of the tower needs to be incre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C7/00C07C7/09C07C7/11C07C11/06C07D303/04C07D301/19C07C29/00C07C29/48C07C33/20
CPCC07C7/005C07C7/09C07C7/11C07D303/04C07D301/19C07C29/00C07C29/48C07C33/20C07C11/06Y02P20/10
Inventor 薛宽荣宋广杰
Owner 上海智英化工技术有限公司