Combustion and emission characteristics of a swirling fluidized-bed combustor burning moisturized rice husk

被引：35

作者：

Kuprianov, Vladimir I. ^{[1
]}

Kaewklum, Rachadaporn ^{[1
,2
]}

Sirisomboon, Kasama ^{[3
]}

Arromdee, Porametr ^{[1
,3
]}

Chakritthakul, Songpol ^{[1
]}

机构：

[1] Thammasat Univ, Sirindhorn Int Inst Technol, Sch Mfg Syst & Mech Engn, Pathum Thani 12121, Thailand

[2] Burapha Univ, Dept Mech Engn, Chon Buri 20131, Thailand

[3] Silpakorn Univ, Dept Mech Engn, Nakhon Pathom 73000, Thailand

来源：

APPLIED ENERGY | 2010年 / 87卷 / 09期

关键词：

Swirl motion; Temperature; CO and NO concentrations; Axial and radial profiles; Combustion efficiency; EFFICIENCY; FBC;

D O I：

10.1016/j.apenergy.2009.09.009

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：

Burning of rice husk in a swirling fluidized-bed combustor (SFBC) was the focus of this experimental study. Swirl motion of a fluidized bed in this combustor was induced by an annular spiral distributor of primary air and also promoted by tangential injection of secondary air into the bed splash zone. "As-received" rice husk was moisturized with the aim to control NO emission from the combustor. The SFBC was tested at a constant fuel feed rate (of about 80 kg/h) for six fuel-moisture contents (from 8.4% to 35%). In each test series for the particular fuel quality, excess air was ranged from about 20% to 80%. Radial and axial profiles of temperature and gas concentrations (O-2, CO and NO) were plotted for different fuel options and operating conditions with the aim to study pollutants formation and reduction in different regions of the SFBC. With increasing the fuel-moisture content, the emission of NO from the combustor apparently reduced, while the emission of CO was adjusted at a quite low level due to the effects of secondary air. An effective least-cost control of both NO and CO emissions and high (over 99%) combustion efficiency are achievable when firing moisturized rice husk in this SFBC. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：2899 / 2906

页数：8

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