System and method for calcination/carbonation cycle processing

A cycle treatment and carbonation technology, which is applied in chemical instruments and methods, separation methods, combustible gas purification, etc., can solve problems such as loss

Active Publication Date: 2009-03-04
CALIX PTY LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, any energy-consuming auxiliary methods such as particle transfer between reactors will result in losses
Capital cost translates to process cost and requires simple scalable reactor design

Method used

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  • System and method for calcination/carbonation cycle processing
  • System and method for calcination/carbonation cycle processing
  • System and method for calcination/carbonation cycle processing

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Embodiment Construction

[0047] The described embodiments relate to a regenerative sorbent process using lime particles as feedstock to separate CO from combustion gases 2 and SO x Methods. Embodiments described here use as a general feature a calcination / carbonation cycle that uses reactions based on metal oxide MO(s) sorbents to remove carbon dioxide. The chemical reaction involves the following cycle:

[0048] MO(s)+CO 2 (g)→MCO 3 (s) carbonation (capture of carbon from flue gases)

[0049] MCO 3 (s)→MO(s)+CO 2 (g) Calcination (releases carbon for collection)

[0050] This embodiment is based on a reactor system in which the particles are conveyed pneumatically between a carbonation reactor and a calciner, wherein the flue gas flows through the carbonation reactor, the sorbent is regenerated in the calciner, and the released carbon dioxide is absorbed in the calciner. Purification and, if necessary, mechanical compression of released carbon dioxide for collection.

[0051] This embodiment ...

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Abstract

A system and method for calcination / carbonation cycle processing. The system comprises a calciner reactor for receiving partially carbonated mineral sorbent granules; a heat exchange structure for transferring heat through a wall of the calciner reactor to a granular flow of the sorbent granules for facilitating a calcination reaction of the sorbent granules to regenerate the sorbent granules; a gas extraction unit for removing gas products from the calciner, wherein the gas products comprise carbon dioxide from the calcination reaction; a carbonator reactor for receiving the regenerated sorbent granules from the calciner reactor and for receiving a cold flue gas, such that the regenerated sorbent granules are partially carbonised while the flue gas is scrubbed and the partially carbonated sorbent granules and the scrubbed flue gas exit the carbonator reactor as respective hot materials; and a riser unit for cycling the partially carbonated sorbent granules from the carbopator reactorto the calciner reactor.

Description

technical field [0001] The present invention generally relates to a system and method for calcination / carbonation cycle processing. Background technique [0002] The impact of anthropogenic carbon dioxide emissions on the environment is now recognized as a major risk to humanity, with current anthropogenic carbon dioxide emissions of about 23.4 billion tons. [0003] Carbon capture and collection (CCS) methods aim to reduce CO2 emissions by capturing CO2 from industrial processes that burn fossil fuels, primarily electricity, cement and steel processing; and in deep saline aquifers (deep saline aquifer), depleted oil and gas fields, deep coal seams or deep sea oil fields to collect carbon dioxide. [0004] For CCS applications, there are three methods of capturing carbon: post-combustion capture, pre-combustion capture, and oxycombustion. For example, pre-combustion capture is used in Integrated Gasification Combined Cycle power plants. However, the initial capital cost o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/62B01J20/34
CPCY02C10/08Y02C10/04Y02A50/20Y02P40/40
Inventor 马克·G·西茨康纳·J·霍利
Owner CALIX PTY LTD
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