- Author
-
Knill, K. J.
|
Chambers, A. K.
|
Parkash, S.
|
Ungarian, D. E.
|
Zacharkiw, R.
- Title
- Evaluation of the Intrinsic Oxidation Reactivity of Hydropyrolysis Chars.
- Coporate
- Alberta Research Council, Canada
- Book or Conf
- Combustion Institute/Canadian and Western States Section. Spring Meeting, 1986. April 27-30, 1986.,
Banff, Alberta, Canada,
1-17 p.,
1986
- Keywords
-
char
- Abstract
- The hydropyrolysis of western Canadian subbituminous coal had been evaluated on the Alberta Research Council, 2 kg/hr bench unit. To evaluate the suitability of the char product as a comustion feedstock in a utility boiler, the oxidation reactivity was measured under kinetic control at temperature less than 500 deg. C using a thermogravimetric analyser. The reactivity was compared with the char combustibility measured using an entrained flow combustor at 1100 deg. C. Low temperature reactivity and high temperature combustibility improved with the volatile matter content of the char. However, some chars with volatile matter content of less than 10% burned out as rapidly as the chars with 20% volatile matter content. The rapid combustibility of the char with a low volatile matter content was attributed to the high pore volume developed during hydropyrolysis. These results suggest that hydropyrolysis chars prepared from Alberta subbituminous coals, may be suitable as boiler feedstocks.