Apparatus and Integrated Process for Separating a Mixture of Carbon Dioxide and at Least One Other Gas and for Separating Air by Cryogenic Distillation

a technology of carbon dioxide and air separation, which is applied in the direction of separation processes, lighting and heating apparatus, liquefaction, etc., can solve the problems of real risk of introducing cosub>2 /sub>into the apparatus for separating air and clogging, and achieve the effect of lowering the temperature of unvaporized water

Inactive Publication Date: 2014-07-31
LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology allows us to reduce waste gas produced during production without losing its effectiveness or causing damage. It uses some other ways like directly exposed steam to remove moisture while still producing cleaned warm liquid called condensate (liquid).

Problems solved by technology

Technics: Compressors and Purifiers work together to remove unwanted substances like harmful chemical compounds found within exhaust streams produced during manufacturing processes. However, these systems require large amounts of energy due to their operation involving heat exchange between different components. Therefore there needs improvement over existing methods without sacrificing efficiency.

Method used

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  • Apparatus and Integrated Process for Separating a Mixture of Carbon Dioxide and at Least One Other Gas and for Separating Air by Cryogenic Distillation
  • Apparatus and Integrated Process for Separating a Mixture of Carbon Dioxide and at Least One Other Gas and for Separating Air by Cryogenic Distillation
  • Apparatus and Integrated Process for Separating a Mixture of Carbon Dioxide and at Least One Other Gas and for Separating Air by Cryogenic Distillation

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Embodiment Construction

[0056]The invention shall be described in more detail by referring to the figures.

[0057]FIG. 1 shows an apparatus and an integrated process for separating a mixture of carbon dioxide and at least one other gas and for separating air by cryogenic distillation according to the invention. FIGS. 2 to 4 show the details of various water cooling towers used to cool the air upstream of the air separation by distillation in FIG. 1, according to the invention. In FIG. 1, a stream of air 1 is cooled in a pre-cooling unit P comprising an air scrubbing tower with water and a water cooling tower with nitrogen 17. This type of cooling is well known in the “Industrial Gas Handbook” by F. G. Kerry, page 112. The air 3 cooled in the pre-cooling unit P is sent to an apparatus for separating air ASU wherein it is purified in order to remove the carbon dioxide and the moisture, cooled and separated in a system of columns in order to produce oxygen 5 and nitrogen 17. The oxygen 5 is sent to an oxy-fuel com

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Abstract

An integrated apparatus for separating a mixture of carbon dioxide and at least one other gas and for separating air by air distillation is provided. The apparatus includes a CO2 separation unit configured to separate the mixture, an air separation unit configured to separate air by cryogenic distillation, a water cooling tower that operates by direct contact, a line for sending water to the top of the tower, a line for sending at least one portion of the nitrogen-enriched gas stream to a lower level of the tower, a cooled water line for withdrawing cooled water from the tower and means for cooling the air upstream of the air separation unit, the cooled water line being connected to means for cooling the air upstream of the air separation unit and to the inlet and/or to the outlet of the unit for separating the gaseous mixture.

Description

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Claims

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Application Information

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Owner LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE
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