Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and apparatus for improving extractive distillation by adding steam to a reboiler

A technology of extractive distillation, extractive distillation column, used in the field of improving extractive distillation and equipment by adding steam to the reboiler

Active Publication Date: 2014-10-29
SULZER MANAGEMENT AG
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While the use of reboilers is known in the art, the simultaneous use of reboilers as a heating medium for distillation columns and as a means of adding stripping steam is not currently documented

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and apparatus for improving extractive distillation by adding steam to a reboiler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1: Extractive distillation apparatus including a reboiler. refer to figure 1 Various embodiments of the invention will be better understood. attached figure 1 A schematic diagram is shown employing an exemplary extractive distillation apparatus 1 in which stripping steam is added directly to the reboiler. as attached figure 1 As shown, the hydrotreated C8 feed stream (containing styrene) is the center cut from pyrolysis gasoline and is added to extractive distillation column 120 via feed stream input line 101 . In this example, the C8 heart cut was rich in styrene (-30 to -40 wt.%). Extractive distillation column 120 is a packed column connected to feed stream input line 101 and solvent input line 102 . In various embodiments, the extractive distillation apparatus operates under vacuum. In various embodiments, solvent is fed to extractive distillation column 120 via solvent input line 102 at a temperature of about 70°C to about 100°C.

[0034] The extract...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Methods and apparatuses for extractive distillation using internal addition of steam to an extractive distillation column from a reboiler are described herein. The apparatuses include an extractive distillation column, a reboiler (for example, a kettle reboiler) coupled to the extractive distillation column, and a steam input line. The steam input line is coupled to an internal steam sparger device of the reboiler. Methods utilizing the apparatuses to perform extractive distillation of a hydrocarbon feed stream are also described herein.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Patent Application 61 / 239,272, filed September 2, 2009; which is hereby incorporated by reference in its entirety. technical field [0003] This invention relates to methods and apparatus for improving extractive distillation by adding steam to a reboiler associated with an extractive distillation column. Background technique [0004] Adding live steam to the distillation column as stripping steam generally makes it possible to carry out the distillation operation at a lower temperature than it would be without the addition of steam. When the distillation column is an extractive distillation column, live steam can also be added. Typically, steam is injected directly into the column shell below the last drip pan. [0005] Introducing a reboiler into a distillation plant as a heating medium has several operational advantages, one of which is to make distillation possib...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01D11/04B01D3/14B01D3/42
CPCB01D3/38B01D3/40C07C7/08B01D3/322C07C15/46B01D3/00C10G7/08
Inventor 米尔西亚·克雷托尤安德烈·卡巴努
Owner SULZER MANAGEMENT AG