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Device and method for separating carbon dioxide from a gas stream, in particular from a flue gas stream, comprising a cooling water system

  • US 10,569,216 B2
  • Filed: 03/24/2015
  • Issued: 02/25/2020
  • Est. Priority Date: 04/07/2014
  • Status: Active Grant
First Claim
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1. A removal apparatus for carbon dioxide from a gas stream, comprising:

  • an absorber configured to separate carbon dioxide from the gas stream by means of a scrubbing medium,a desorber which is connected hydrodynamically to the absorber and configured to liberate absorbed carbon dioxide from the scrubbing medium, wherein a discharge line from the desorber is connected hydrodynamically to a feed line of the absorber,a gas cooler which is located hydrodynamically upstream of the absorber, which is configured to cool the gas stream, and which is configured to produce a stream of water,a spray cooling unit configured to use a spray cooling medium to spray cool a first portion of the stream of water discharged from the gas cooler;

    a treatment unit which is located downstream of the gas cooler and is configured for purifying a second portion of the stream of water discharged from the gas cooler,a connection configured to deliver purified water from the treatment unit to the spray cooling unit where the purified water is used as the spray cooling medium, andan absorber spray cooling unit configured to use a respective spray cooling medium to spray cool the scrubbing medium fed to the absorber, wherein the absorber spray cooling unit is connected hydrodynamically to the treatment unit, which absorber spray cooling unit is installed in the feed line of the absorber, and wherein the purified water from the treatment unit is used as the respective spray cooling medium in the absorber spray cooling unit.

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