CALCIUM SULFIDE FORMATION IN FLUIDIZED-BED BOILERS

被引：12

作者：

LYNGFELT, A ^{[1
]}

LANGER, V ^{[1
]}

STEENARI, BM ^{[1
]}

PUROMAKI, K ^{[1
]}

机构：

[1] CHALMERS UNIV TECHNOL,DEPT INORGAN CHEM,S-41296 GOTHENBURG,SWEDEN

来源：

CANADIAN JOURNAL OF CHEMICAL ENGINEERING | 1995年 / 73卷 / 02期

关键词：

CALCIUM SULFIDE; FLUIDIZED BED COMBUSTION; SULFUR RETENTION; FLUIDIZED BED BOILER; SORBENT;

D O I：

10.1002/cjce.5450730209

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Analyses of samples of bed ash from a stationary fluidized bed boiler show the presence of calcium sulphide. In some samples, half of the total sulphur was present as sulphide. The samples containing CaS were obtained under unstaged conditions and with a high excess air ratio, 1.3 to 1.4. The samples were taken after a stop in the limestone addition, i.e. at high SO2 emissions of about 1000 mL/m(3) (ppm). No CaS was found during limestone addition when the SO2 emission was 300-400 mL/m(3). This indicates that formation of large amounts of CaS may be initiated as the SO2 concentration exceeds some critical level.

引用

页码：228 / 233

页数：6