摘要
利用250kW的中试装置,进行了常压下将天然气在氮等离子体射流中的裂解并转化为乙炔的实验。研究目的是考察输入功率、甲烷流量和反应器结构对反应转化率、选择性的影响。结果表明:天然气在氮热等离子体中热解反应强烈,其转化率主要由输入功率和甲烷流量决定,产品的选择性亦即乙炔的收率与反应器的结构密切相关。例如,在等离子体输入功率100kW,甲烷进量10m3/h条件下,选择适当长度的反应器,甲烷转化率可达到97%,乙炔收率可达到90%。分析表明,较高的乙炔选择性是由于减少了乙炔在反应器中的停留时间,从而避免了乙炔进一步的热裂解所致。
An experiment is carried out of converting natural gas to acetylene by a plasma jet of 250 kW. The aim of this work is to investigate the effects of input power, feedstock flow rate, and reactor configuration on methane conversion rate and acetylene yield. Results show that the conversion rate of methane is mainly determined by plasma power and methane flow rate, the product selectivity is sensitive to reactor configuration. For example, under the condition of 100 kw plasma power, 10 m3/h methane flow rate, and proper reactor length, the methane conversion rate and acetylene yield can reach 97% and 90% respectively. Further analysis indicates that the higher acetylene selectivity is due to the reduced detention time which acetylene takes to linger in the reactor, therefore, the decomposition of acetylene is prevented.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2006年第4期131-134,共4页
Natural Gas Industry
基金
国家自然科学基金项目(No.10475060)资助。~~
