50.石炭の熱分解における揮発分生成

抄録

To better understand the chemistry of coke formation, a good coking coal was pyrolyzed at 3 and 50℃/min. to peak temperatures ranging from 450 to 600℃. All volatiles were captured (overall material balance closed to within 4%) and quantified gravimetrically or analytically. Weight loss and volatiles production trends were quite different at the two heating rates. Weight loss and volatiles production all increased with temperature at 50℃/min, while different trends were observed at 3℃/min. Study of the resulting coke by polarized-light microscopy also supports the volatiles and weight loss data which suggest different mechanisms of coke formation at the two heating rates.