논문 해외 국제전문학술지(SCI급) PARTIAL OXIDATION OF SEWAGE SLUDGE BRIQUETTES IN A UPDRAFT FIXED BED
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2016-03
- 저자명 엄태인
- 학술지명 WASTE MANAGEMENT
- 발행처명 PERGAMON-ELSEVIER SCIENCE LTD
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 5
홈페이지논문 초록 (Abstract)
The fixed bed reaction of sewage sludge briquettes was investigated to evaluate the potential applications to gasification, combustion, or production of biochar as soil ameliorator. The reaction had two distinctive stages: ignition propagation and char oxidation. Th e ignition front of the sludge briquettes propagated at a lower s peed, which significantly increased the stoichiometric ratio of overa ll combustion reaction and peak temperatures. The ignition front a lso had irregularshapes due to the channeling effects. During the char oxidation stage, the sludge ash agglomerated because of the slo w reaction rate and increased CO2 formation. Because of low energ y content in the product gas, the large briquettes were not favor able for syngas production. In addition, the low burning rates and ash agglomeration could cause problems in the operation of a grat e-type furnace for combustion. However, the char accumulated above t he ignition front had similar properties with that from pyrolysi s under inert atmosphere. Therefore, the fixed bed reaction under par tial oxidation conditions can be applied to produce biochar as soi l ameliorator from the sludge briquettes without external heat supply. (C) 2016 Elsevier Ltd. All rights reserved.