Experimental investigations on deposit formation by recarbonation on external heat exchanger surfaces in oxyfuel CFB boilers

被引：4

作者：

Beisheim, Theodor ^{[1
]}

Zieba, Mariusz ^{[1
]}

Scheffknecht, Guenter ^{[1
]}

机构：

[1] Inst Combust & Power Plant Technol, D-70569 Stuttgart, Germany

来源：

GHGT-11 | 2013年 / 37卷

关键词：

external heat echanger; oxyfuel; recarbonation; deposition; CFB; CIRCULATING FLUIDIZED-BED; COMBUSTION; CARBONATION;

D O I：

10.1016/j.egypro.2013.06.003

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Applying the oxyfuel process to the circulating fluidized bed technology, one of the major process concerns is the possible deposit formation on the immersed surfaces of the external heat exchangers caused by the recarbonation of unused calcined desulphurization sorbent (CaO). This paper presents first results from experiments carried out under air- and oxyfuel atmospheres in a lab-scale BFB of calcined limestone with an in-bed cooled deposition probe. It was found, that under oxyfuel conditions, the strong recarbonation of calcined particles on the cool surface lead to hard and stable carbonate depositions. (C) 2013 The Authors. Published by Elsevier Ltd. Open access under CC BY-NC-ND license. Selection and/or peer-review under responsibility of GHGT

引用

页码：1283 / 1290

页数：8

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