Abstract
Characteristics of char produced by co-pyrolysis of dried sludge and coal were revealed by comparing its char with sludge char and coal char produced by pyrolysis. And there is influence of co-pyrolysis atmosphere playing char. In the experiments, pyrolysis of dried sludge, coal and the both was conducted under temperature was 1173 K and duration was 60 min. Co-pyrolysis atmosphere was changed nitrogen flow and pyrolysis gas during co-pyrolysis experiments. Yield of char produced under pyrolysis gas was lower than that produced under nitrogen flow. When these chars react with steam, starting reaction temperature of co-pyrolysis char was higher than that of sludge char and lower than that of coal char, reaction behavior of co-pyrolysis char was different from sludge char and coal char. And there was difference of reaction behavior of char produced by change of co-pyrolysis atmosphere.
