煤制气再燃低燃烧中气固分离冷态实验研究 -

为了研究部分气化煤制气再燃降低NO x技术中的部分煤制气的气固分离效果以及影响分离效果的因素,采用搭建与某130 t冷态炉膛相匹配的部分煤制气气固分离装置冷态实验台的方法,测试了分离装置内底部分离风和顶部载气流速大小对装置内物料气固两相分离效果的影响。结果表明:底部分离风与顶部载气流速是物料气固两相分离的两个重要影响因素,其中,当底部分离风流速v1为10 m/s,顶部载气速度v2为5 m/s时,煤制气中半焦的分离效率最高,挥发分的分离效率也达到较大值,分离效果最好。 Analyse the gas-solid separation efficiency and its influencing factors of coal gas in the technology of partially gasified coal gas reburn to reduce NO x. Build a gas-solid separation cold test rig of coal gas,which matches with a 130 tons cold hearth,exam the impact of separator wind and carrier gas flow rate on gas-solid separation effect of material in the separation device. The results show that,when the intake flow rate of the bottom inlet v1is 10 m / s,and the flow velocity of the top inlet v2is 5 m / s,the separation efficiency of semi-coke is the highest,and the separation efficiency of volatile also achieves greater value,the volatile can be well separated from semi-coke