Method for capturing carbon dioxide

Patent metadata

Field	Value
Publication number	US-10434469-B2
Application number	US-201715727809-A
Country	US
Kind code	B2
Filing date	Oct 9, 2017
Priority date	Jun 2, 2014
Publication date	Oct 8, 2019
Grant date	Oct 8, 2019

Abstract

A method for integrating a carbon capture process with a process for cement production.

First claim

The invention claimed is:

1. A method for capturing carbon dioxide comprising:
supplying a first raw material containing a first carbon dioxide rich sorbent to a first calciner;
at the first calciner, thermally decomposing the first carbon dioxide rich sorbent into a first carbon dioxide lean sorbent and a first carbon dioxide stream;
supplying the first carbon dioxide lean sorbent to a carbonator;
at the carbonator, adsorbing carbon dioxide from a flue gas to generate a second carbon dioxide rich sorbent;
supplying the second carbon dioxide rich sorbent to a second calciner;
at the second calciner, thermally decomposing the second carbon dioxide rich sorbent into a second carbon dioxide lean sorbent and a second carbon dioxide stream;
providing at least a part of the second carbon dioxide lean sorbent to the carbonator; and
providing at least a part of the second carbon dioxide lean sorbent from the second calciner to a kiln for cement production.

2. The method according to claim 1 , wherein the first and second carbon dioxide rich sorbent includes CaCO 3 and the first and second carbon dioxide lean sorbent includes CaO.

3. A method, the method comprising:
providing a first raw material, the first raw material containing a first carbon dioxide rich sorbent, to a first calciner;
calcining the first raw material to generate a second raw material and a first carbon dioxide stream, the second raw material comprising a first carbon dioxide lean sorbent;
providing the second raw material and a flue gas to a carbonator;
at the carbonator, adsorbing carbon dioxide from the flue gas to generate a second carbon dioxide rich sorbent;
providing the second carbon dioxide rich sorbent to a second calciner;
at the second calciner, calcining the second carbon dioxide rich sorbent into a second carbon dioxide lean sorbent and a second carbon dioxide stream;
providing at least a first portion of the second carbon dioxide lean sorbent to the carbonator; and
providing at least a second portion of the second carbon dioxide lean sorbent from the second calciner to a kiln for cement production.

4. The method according to claim 3 , wherein the first and second carbon dioxide rich sorbent includes CaCO 3 and the first and second carbon dioxide lean sorbent includes CaO.

Assignees

• General Electric Technology Gmbh

Inventors

• Balfe Michael Charles
• Stallmann Olaf
• Weingärtner Christoph

Classifications

• B01D2257/504

  Carbon dioxide · CPC title

• B01D2259/65

  Employing advanced heat integration, e.g. Pinch technology · CPC title

• Y02P40/18

  Carbon capture and storage [CCS] · CPC title

• B01D2251/404

  of calcium · CPC title

• B01D53/08

  according to the "moving bed" method · CPC title