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2019-11-14View Original

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水煤气组分为CO:61%、H2:32%、CO2:5%、CH4:1.5%、O2:0.1%、其它:0.4%,要制取这种组分的水煤气需要消耗多少纯氧? 已知蒸氧比为0.84,能否估算出需氧量。天下造气一家人,各位搞造气的朋友,你们的经验值是多少呢?
Reply #22019-11-15
你这个是煤气发生炉还是固定床气化?你给出这两个数据说真的没法子计算?因为按照物料平衡,还需重点原料煤中的氧量,及原料煤的流量
Reply #32019-11-15
是固定床气化炉,我粗算如下:1、入炉氧计算 气化及燃烧用氧:1500Nm3/h÷22.4m3/kmol×32kg/kmol=2142.86kg/h 控制蒸氧比为0.83kg/Nm3,则蒸汽流量为:1400Nm3/h×0.83kg/Nm3=1162kg/h 蒸汽带入氧:1162kg/h÷18kg/kmo×16/18=918.12kg/h 煤中含氧、石灰石含氧、二氧化碳保护气含氧忽略不计。 合计为:2142.86kg/h+1162kg/h+918.12kg/h=4222.98kg/h 2、产出氧计算 熔渣气化所产煤气组分为:CO:61%、CO2:5%、H2:31%、O2:0.2%、其它:2.8% 设煤气产量为xNm3/h,则: 煤气中CO含氧:0.61x÷22.4m3/kmol×16kg/kmol=0.436x 煤气中CO2含氧:0.05x÷22.4m3/kmol×32kg/kmol=0.071x 煤气中O2含氧:0.002x÷22.4m3/kmol×32kg/kmol=0.003x 不计炉内固体带出物含氧,不计煤中灰份含氧。 合计为:0.436x+0.071x+0.003x=0.51x 3、氧平衡 入炉氧=产出氧,则有: 0.51x=4222.98kg/h x=8280.35Nm3/h

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