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

Method and appliance for separating a mixture containing carbon dioxide by cryogenic distillation

A carbon dioxide, gaseous mixture technology, applied in lighting and heating equipment, cold processing separation, liquefaction and other directions, can solve the problem of not describing the fluid state in detail

Inactive Publication Date: 2015-05-27
LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also shown are pipes that allow fluid to be returned to the column, but the document does not describe in detail the state of this fluid

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 appliance for separating a mixture containing carbon dioxide by cryogenic distillation
  • Method and appliance for separating a mixture containing carbon dioxide by cryogenic distillation
  • Method and appliance for separating a mixture containing carbon dioxide by cryogenic distillation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The method according to the invention will be described with reference to figure 1 and figure 2 The present invention is described in more detail.

[0024] According to the present invention, in figure 1 , a gaseous mixture 1 containing at least 30%, even at least 40%, of carbon dioxide and at least one light impurity, which may be oxygen, carbon monoxide, Nitrogen, argon, hydrogen, methane or at least two of these components. The gaseous mixture originates from a source 100, which may be an oxyfuel unit followed by a scrubbing unit for removal of water and substances such as dust, SO X , NO X other pollutants. If necessary, the gaseous mixture is compressed, for example, to a pressure above 6 bar abs (absolute pressure). The pressurized gaseous mixture 1 is cooled in a heat exchanger 43 with brazed aluminum plates or with tubes. If necessary, the cooled gaseous mixture is processed in a treatment device, for example a separation device 113 . The separation dev...

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

In a method for separating at least one lighter impurity of a gaseous mixture containing at least 30% mol of carbon dioxide, a liquid (101) enriched with carbon dioxide is drawn off into a vat of a distillation column (25), at least part (27) of the liquid enriched with carbon dioxide is vapourised and then heated to a first temperature higher than the boiling temperature thereof in the exchanger and leaves the exchanger at the hot end thereof, and at least part of the vapourised and heated liquid is sent from the hot end of the exchanger at the first temperature, without being cooled in the exchanger and without having been compressed, to the lower part of the distillation column, where it participates in the distillation while enriching itself.

Description

technical field [0001] The present invention relates to a method and an apparatus for the separation of mixtures containing carbon dioxide by cryogenic distillation. [0002] As a variant, the invention also relates to washing from CO by cryogenic distillation 2 A liquid mixture consisting of dissolved impurities, the liquid in the reservoir (bottom, bottom, cuve) of the distillation column is reboiled and superheated. Background technique [0003] Liquid CO containing more volatile dissolved impurities is usually accomplished by cryogenic distillation 2 of washing. For this, the distillation column is supplied with liquid CO 2 , and a portion of the liquid in the column reservoir vaporizes to generate a vapor that will be carried countercurrently all the way down the column to the liquid. To generate the vapor, a reboiler is most often used: a hot fluid reheats the liquid to its boiling point to generate the vapor at a temperature as close as possible to the liquid / vapo...

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 Applications(China)
IPC IPC(8): F25J3/02
CPCF25J3/0266F25J2200/02F25J2200/40F25J2200/70F25J2205/04F25J2210/04F25J2210/70F25J2220/82F25J2230/30F25J2235/02F25J2235/80F25J2240/90F25J2245/02F25J2270/02F25J2270/80Y02C20/40F25J2290/34F25J3/0223
Inventor A·达德M·莱克勒克
Owner LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE