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129425

Staged Combustion of Rice Straw in a Fluidized Bed.

Article

Last updated: 22 Jan 2023

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Subjects

-

Tags

Mechanical Power Engineering

Abstract

Staged combustion of rice straw has been investigated using a fluidized bed combustor of 300 mm ID and 3300 mm height. With air staging, secondary air is fed higher up in the freeboard at 1500 mom above the distributor of primary air. Rice straw is fed as cylindrical pellets with 12 mm diameter and 10 mm length, The obtained results indicate that staged combustion is an effective way to reduce NOX emissions, in particular, at higher operating temperatures. NO, typically reduces by 50% when secondary air ratio becomes 30% at 850°C bed temperature. Staged operation has a slight, non-monotonic effect on SO2 emissions. Combustion efficiency increases with increasing secondary air ratio reaching a maximum value that is mainly attributed to a reduction in fixed carbon loss. However, combustion efficiency decreases after a maximum as a result of growing exhausted carbon monoxide and fixed carbon loss. The range of secondary air, over which combustion efficiency increases, widens at higher operating temperature.
 

DOI

10.21608/bfemu.2020.129425

Keywords

Staged Combustion, Fluidized Bed, Biomass

Authors

First Name

Farouk

Last Name

Okasha

MiddleName

-

Affiliation

Associate Professor Department of Mechanical Engineering, Mansoura University, Egypt.

Email

faroukok@mrians.edu.eg

City

Mansoura

Orcid

-

Volume

31

Article Issue

1

Related Issue

19222

Issue Date

2006-03-01

Receive Date

2006-01-11

Publish Date

2020-12-13

Page Start

42

Page End

56

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 31_Issue 1_Pages 42-56.pdf

PDF . 838.2kB

Link

https://bfemu.journals.ekb.eg/article_129425.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=129425

Order

21

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

https://bfemu.journals.ekb.eg/

MainTitle

-

Details

Type

Article

Created At

22 Jan 2023