Synergies in co-pyrolysis of Thai lignite and corncob

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Sonobe T., Worasuwannarak N., Pipatmanomai S.

ผู้เผยแพร่: Elsevier

ปีที่เผยแพร่ (ค.ศ.): 2008

วารสาร: Fuel Processing Technology (0378-3820)

Volume number: 89

Issue number: 12

หน้าแรก: 1371

หน้าสุดท้าย: 1378

จำนวนหน้า: 8

นอก: 0378-3820

eISSN: 1873-7188

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-56549129969&doi=10.1016%2fj.fuproc.2008.06.006&partnerID=40&md5=81112fafe4f6a7b14e8f21f34d6a1a88

ภาษา: English-Great Britain (EN-GB)

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บทคัดย่อ

The results from TGA experiments at the temperature range of 300-600 ฐC evidently distinguished the different pyrolysis behaviours of lignite and corncob; however, no clear synergistic effects could be observed for the mixture. The investigation of co-pyrolysis in a fixed-bed reactor, however, found significant synergies in both pyrolysis product yields and gas product compositions. The solid yield of the 50:50 lignite/corncob blend was much lower (i.e. 9%) than expected from the calculated value based on individual materials under the range of temperatures studied, and coincided with the higher liquid and gas yield. The synergistic effect in product gas composition was highly pronouncing for CH4 formation, i.e. three times higher than the calculated value at 400 ฐC. Possible mechanisms were described including the interaction between corncob volatiles and lignite particles, and the effect of the heat profiles of lignite and corncob pyrolysis on the temperature dependent reactions. The enhanced devolatilisation of the blend was explained by the transfer of hydrogen from biomass to coal as well as the promotion of low-temperature thermal decomposition of lignite by exothermic heat released from corncob pyrolysis. Moreover, water, which was one of the major components in corncob volatiles produced mainly at around 200-375 ฐC, can also be expected to act as a reactive agent to promote the secondary tar cracking producing more CH4. ฉ 2008 Elsevier B.V. All rights reserved.

คำสำคัญ

Synergies