Influences of coal size and coal-feeding location in co-firing with rice husks on performance of a short-combustion-chamber fluidized-bed combustor (SFBC)

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Madhiyanon T., Sathitruangsak P., Soponronnarit S.

ผู้เผยแพร่: Elsevier

ปีที่เผยแพร่ (ค.ศ.): 2011

วารสาร: Fuel Processing Technology (0378-3820)

Volume number: 92

Issue number: 3

หน้าแรก: 462

หน้าสุดท้าย: 470

จำนวนหน้า: 9

นอก: 0378-3820

eISSN: 1873-7188

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-78751644298&doi=10.1016%2fj.fuproc.2010.10.013&partnerID=40&md5=e07f181a9893b0801cc59eb9b7627ca3

ภาษา: English-Great Britain (EN-GB)

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บทคัดย่อ

This study examined the combustion characteristics and performance of rice husks co-fired with coal in a short-combustion-chamber fluidized-bed combustor (SFBC) with a 225 kWth capacity. Rice husks were the main fuel, and coal was a supplementary fuel in the experiments. The effects of coal size (< 5 mm and 5-10 mm) and coal-feed location (above or below a recirculating ring) on combustion performance were investigated. Various co-combustion tests of rice husks with coal were performed, with different thermal percentages (10, 15, 20, and 25%) of coal. The results were compared to firing 100% rice husks alone. With the assistance of a stirring blade and a recirculating ring, good combustion was feasible without using any inert materials mixed into the bed. Combustion efficiency in an excess of 98% was readily achievable. CO and SO 2 emissions (at 6% O2) were in the range 64-104 and 10-22 ppm, respectively, while NOx emissions were in the range of 208-281 ppm. Although the CO and SO2 emissions were acceptable, combustion of 100% rice husks and co-combustion with < 20% coal failed to comply with Thai NOx emission limits. Therefore, to minimize NOx emissions (208-244 ppm, at 6% O2), coal of both sizes was introduced below the recirculating ring. The results demonstrated that the thermal percentage of coal in the fuel mixture should be 20-25%. ฉ 2010 Elsevier B.V. All rights reserved.

คำสำคัญ

Rice husks