煤层气非催化燃烧除氧实验研究 -

煤层气由于热值及浓度较低,达不到工业利用要求,工业应用中需进行浓缩。由于煤层气中含有氧,给浓缩过程带来了不安全因素,因此在浓缩前必须将氧除去。简要介绍了煤层气除氧的几种方法,并在除氧反应器装置上对煤层气非催化燃烧除氧进行了实验研究。结果发现,通过非催化燃烧法除氧,O2浓度能够降至1%以下;选用的除氧燃料须具有反应活性好、热值低的特点;除氧温度接近600℃时,CH4损失率小于5%,CH4的裂解是造成CH4损失的主要原因。 Low heat value and concentration of coalbed methane make it can't meet the requirement of industry utilization. So it should be concentrated. The oxygen in coalbed methane increases dangers for concentration process. So it is necessary to remove oxygen from the gas before concentrating. Several deoxidization methods of coalbed methane are briefly represented,and experimental study on the deoxidization of coalbed methane with non-catalytic combustion method in a deoxidization reactor is carried out. The results show that the concentration of oxygen can be reduced to less than 1% with non-catalytic combustion method. The fuel used for deoxidization should have the characteristics of good reactivity and low calorific value. The loss rate of methane is less than 5%,while the deoxidization temperature is close to600 ℃,the pyrolysis of methane is the main reason of methane loss