A Novel Dual Circulating Fluidized Bed System for Chemical Looping Processes

被引：146

作者：

Proell, Tobias ^{[1
]}

Kolbitsch, Philipp ^{[1
]}

Bolhar-Nordenkampf, Johannes ^{[1
]}

Hofbauer, Hermann ^{[1
]}

机构：

[1] Vienna Univ Technol, Inst Chem Engn, A-1060 Vienna, Austria

来源：

AICHE JOURNAL | 2009年 / 55卷 / 12期

关键词：

fluidization; circulating fluidized bed; reactor system; combustion; chemical looping; carbon capture; CARBON-DIOXIDE SEPARATION; POWER-GENERATION SYSTEM; HYDROGEN-PRODUCTION; CALCIUM-OXIDE; NATURAL-GAS; SOLID FUELS; CO2; CAPTURE; COMBUSTION; REACTOR; BIOMASS;

D O I：

10.1002/aic.11934

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A fluidized bed system combining two circulating fluidized bed reactors is proposed and investigated for chemical looping combustion. Direct hydraulic communication of the two circulating fluidized bed reactors via a fluidized loop seal allows for high rates of global solids circulation and results in a stable solids distribution in the system. A 120 kW fuel power bench scale unit was designed, built, and operated. Experimental results are presented for natural gas as fuel using a nickel-based oxygen carrier. No carbon was lost to the air reactor under any conditions operated. It is shown from fuel power variations that a turbulent/fast fluidized bed regime in the fuel reactor is advantageous. Despite the relatively low riser heights (air reactor: 4.1 m, fuel reactor: 3.0 m), high CH4 conversion and CO2 yield of up to 98% and 94%, respectively, can be reported for the material tested. (C) 2009 American Institute of Chemical Engineers AIChE J, 55:3255-3266, 2009

引用

页码：3255 / 3266

页数：12

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