The effect of dolomite addition on sulphur, chlorine and hydrocarbons distribution in a fluid-bed mild gasification of coal

Pyrolysis of the bituminous and brown coals was studied in the circulating fluidised bed-reactor. Influence of air/coal ratio on the product yields and composition was investigated. The pyrolysis was performed at temperature of 800–900 °C, which results from partial gasification of circulated coal char. The process was investigated in a scale of 300 kg/h of coal throughput. Particularly, the effect of dolomite addition on polyaromatic organic compounds, sulphur and chlorine distribution was investigated and discussed.