主催: 一般社団法人 日本エネルギー学会 石炭科学部会, 一般社団法人 日本エネルギー学会 コークス工学研究部会
共催: 九州大学炭素資源国際教育研究センター, 化学工学会 エネルギー部会, 日本エネルギー学会 重質油部会, エネルギー学部会
会議名: 第50回石炭科学会議 第12回日中石炭・C1化学シンポジウム
回次: 50
開催地: 九州大学医学部 百年講堂
開催日: 2013/10/28 - 2013/10/31
p. 52-53
In pulverized coal combustion boiler, ash deposits such as slagging and fouling prevent heat transfer. On the other hand, a reserve of high lank coal is limited. So co-combustion of low lank coal, that is inexpensive, and high lank coal has been carried out in pulverized coal combustion boiler. Generally, low lank coal includes ash of low melting point. However, in this situation, ash deposition behavior has not been clarified. The purpose of this work is elucidation of ash deposition behavior during co-combustion in pulverized coal combustion boiler. Ash deposits were collected on a heat transfer tube with an ash deposit experiment at some blend condition. Ash particles near the adhesion interface were analyzed about element distribution by a Scanning Electron Microscope and an Energy Dispersive X-ray (SEM/EDX). And ash particles are also analyzed about composition and particle size distribution by a Computer Control Scanning Electron Microscope (CCSEM). We calculated the molten fraction of each mix condition ash by chemical equilibrium theory, using FactSage Ver.6.3.1 software.
