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Calciner and method for calcination of a carbon dioxide rich sorbent

A technology rich in carbon dioxide and carbon dioxide, applied in chemical instruments and methods, combustion methods, calcination, etc., can solve the problems of low heat transfer efficiency, low efficiency of moving bed, hindering heat transfer of inert solid particles, etc.

Inactive Publication Date: 2016-02-10
GENERAL ELECTRIC TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] Furthermore, inefficiencies associated with inert sorbent particles entering the calciner and improper distribution of sorbent particles can lead to inefficiencies in heat transfer within the moving bed, ultimately hampering heat transfer from the inert solid particles, limiting cooling and the achieved The final temperature of the inert solid, and also the specific fraction of heat that can be extracted from a given mass of circulating inert solid particles

Method used

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  • Calciner and method for calcination of a carbon dioxide rich sorbent
  • Calciner and method for calcination of a carbon dioxide rich sorbent
  • Calciner and method for calcination of a carbon dioxide rich sorbent

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Embodiment Construction

[0063] Reference is made to the figures which show a carbonator-calciner system comprising a calciner 1 having a furnace 2 and a reactor 3 in which calcination takes place.

[0064] The furnace 2 has an oxidant supply 5, a fuel supply 6, a flue gas outlet 7 and a solids (HT solids) supply 8a, 8b.

[0065] The fuel may be any suitable fuel, such as coal, oil, gaseous fuel, etc.; the oxidant (usually preheated oxidant) may be air, but other oxidants are possible, such as oxygen-enriched air or substantially pure oxygen or Other suitable oxidizing agents; HT solids can be alumina (Al 2 o 3), but other solid particles that remain inert in combustion systems up to 1300°C, such as bauxite, can also be used. Furthermore, HT solids are larger than the sorbent particles applied to carbon capture. HT solids in the size range of 800 μm - 1.2 mm and adsorbent particles in the size range of 50 - 500 μm may be required, however, other size classes may work as well, as long as HT solids t...

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Abstract

A method for calcination of a carbon dioxide rich sorbent (containing CaCO3) comprises combusting in a furnace (2) a fuel with an oxidizer, supplying heat transfer (HT) solids into the furnace (2) and heating them, transferring the HT solid particles from the furnace (2) to a reactor (3) having a rotatable container (51), supplying a carbon dioxide rich solid sorbent (containing CaCO 3) into the rotatable container (51), rotating the rotatable container (51) for mixing the solid particles and the carbon dioxide rich solid sorbent for transferring heat from the solid particles to the carbon dioxide rich solid sorbent and generating carbon dioxide and carbon dioxide lean solid sorbent (mainly CaO), discharging the carbon dioxide and the carbon dioxide lean solid sorbent from the rotatable container (51) and the subsequent classification of the HT solids from the lean sorbent.

Description

technical field [0001] The present invention relates to a calciner and a method for calcining carbon dioxide-rich sorbents. [0002] The calciner and method according to the invention can be used in cement production plants (for the production of sintered bricks), or for CO capture from flue gases from other industrial or power generation processes. 2 The produced rich sorbent is calcined. Background technique [0003] WO94 / 01203 discloses a system with a furnace supplying flue gas to a first fluidized bed and then to a boiler. Flue gas is supplied from the boiler to the carbonator. The first fluidized bed comprises solid particles which are heated by the flue gas and circulated between the first fluidized bed and the fluidized bed calciner in order to heat the fluidized bed calciner. At the fluidized bed calciner, the sorbent used in the fluidized bed carbonator is regenerated. At the fluidized bed carbonator, CO from the flue gas generated in the furnace 2 absorbed. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27B7/20C04B7/36
CPCB01J8/087B01J8/10B01J8/1809B01J6/002B01J8/0055F27B7/2016B01J2208/0038B01J2208/00513B01J2208/00752F27D17/004F27D17/008B01D53/62B01D53/83B01D2251/404B01D2251/602B01D2257/504B01D2258/0283C01B32/50F27B7/02F27B2007/025Y02C20/40Y02P20/151C04B7/434C04B7/4438F23G5/20C01F11/06C04B7/44
Inventor M.C.巴弗G.海恩兹O.斯塔尔曼恩C.维恩格特纳
Owner GENERAL ELECTRIC TECH GMBH