On the High-Gasification Rate of Brazilian Manganese Ore in Chemical-Looping Combustion (CLC) for Solid Fuels

被引：28

作者：

Frohn, Peter ^{[1
]}

Arjmand, Mehdi ^{[2
]}

Azimi, Golnar ^{[2
]}

Leion, Henrik ^{[2
]}

Mattisson, Tobias ^{[3
]}

Lyngfelt, Anders ^{[3
]}

机构：

[1] Univ Siegen, Sch Mech Engn, D-57068 Siegen, Germany

[2] Chalmers Univ Technol, Div Environm Inorgan Chem, Dept Chem & Biol Engn, SE-41296 Gothenburg, Sweden

[3] Chalmers Univ Technol, Div Energy Technol, Environm & Energy Dept, SE-41296 Gothenburg, Sweden

来源：

AICHE JOURNAL | 2013年 / 59卷 / 11期

关键词：

CO2-capture; chemical-looping combustion (CLC); manganese ore; ilmenite; solid fuels; OXYGEN CARRIER; FLUIDIZED-BED; CO2; SEPARATION; POTASSIUM; ILMENITE; DESIGN; CARBON;

D O I：

10.1002/aic.14168

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The high rate of char gasification observed when using a Brazilian manganese ore as compared to ilmenite is investigated in a batch fluidized-bed reactor. Experiments were carried out at 970 degrees C using petroleum coke, coal and wood char as fuel with a 50% H2O in N-2 as fluidizing gas. A manufactured manganese oxygen carrier was also used, however, which presented a slower char conversion rate than the manganese ore. It is concluded that decrease in H-2 inhibition and oxygen release are unlikely to be the main responsible mechanisms for the ore's unexpected gasification rate. The ore was also mixed in different ratios with ilmenite and it was observed that the presence of even small amounts of ore in the bed resulted in increased gasification rate. Thus, the high-gasification rate for the manganese ore could be due to a contribution from the impurities in the ore by catalyzing the gasification reaction. (c) 2013 American Institute of Chemical Engineers AIChE J, 59: 4346-4354, 2013

引用

页码：4346 / 4354

页数：9

共 40 条

[1] The use of iron oxide as oxygen carrier in a chemical-looping reactor [J].