气化参数对气流床粉煤气化影响实验研究

为评价和优化中国高、低灰熔点煤气化运行参数对气流床气化特性的影响，在1600℃的一维常压沉降式气流床气化实验系统上，着重研究了中国典型高、低灰熔点煤在1200～1600℃温度范围内、O／C摩尔比在0．9～1.2范围内的干煤粉气化特性。结果表明：随着温度的升高，产气中CO、H2含量逐渐增多，CO2、CH4含量逐渐减少，碳转化率有很大提高；随着O／C的增加，CO、H2含量不断减少，CO2逐渐增加；煤的灰熔融性也是影响煤气组分一个重要因素，当气化反应温度接近煤灰熔点温度时，煤气组分（CO＋H2＋CH4）达到一个最大值。

Experimental study on effects of operation parameters on entrained flow pulverized coal gasification

Experimental studies on gasification characteristics of both high and low fusing temperature coal were carried out by using experimental equipment for atmospheric pressure entrained-flow gasification in a 1600 ℃ drop tube furnace. Investigate the characteristics of dry coal gasification in the temperature of 1200 ℃ to 1600 ℃ and O/C molar ratio 0. 9 to 1.2. The concentration of CO and H2, the carbon conversion all increase with increasing reaction temperature whereas the concentration of CO2 and CH4 decrease with increasing reaction temperature; With increasing O/C ratio, the concentration of CO and H2 decrease and the concentration of CO2 increase; Ash fusing characteristic of coal is a key factor on the syngas composition, The CO ＋ H2 ＋ CH4 content of the product gas exhibit a maximum around the ash fusion temperature.