【摘要】：與傳統(tǒng)的甲烷催化制氫技術(shù)相比,低溫等離子體技術(shù)具有能耗低、無需催化劑、啟停迅速、可在常溫常壓下運行等優(yōu)點,具有良好的應(yīng)用前景。為此,研究了空氣載氣下磁旋滑動弧放電等離子體的物理特性,并開展了甲烷部分氧化重整制氫實驗。結(jié)果表明:空氣體積流量分別為2 L/min、8 L/min、16 L/min時,電弧均可穩(wěn)定旋轉(zhuǎn),轉(zhuǎn)速最高為111 r/s,且存在固定的放電周期;而與傳統(tǒng)刀片滑動弧不同的是,磁旋滑動弧在2 L/min的體積流量下依然可以維持穩(wěn)定的運行和較長的電弧長度,從而有利于反應(yīng)的充分進行;電弧長度和直徑對放電電壓、電流、功率、電流密度、電場強度和電導(dǎo)率等參數(shù)有直接影響。在甲烷部分氧化重整制氫實驗中,CH_4的轉(zhuǎn)化率和H_2的選擇性均隨過量空氣系數(shù)的增加而先升后降,CH_4的轉(zhuǎn)化率最高可達100%,H_2的選擇性最高為42.42%,效果遠好于傳統(tǒng)的刀片式滑動弧。此外,微富氧的環(huán)境有利于甲烷的完全轉(zhuǎn)化。研究結(jié)果證明磁旋滑動弧能夠促進甲烷部分氧化重整制氫。
[Abstract]:Compared with the traditional methane catalytic hydrogen production technology, low temperature plasma technology has the advantages of low energy consumption, no catalyst, rapid start and stop, and can run at room temperature and pressure, so it has a good application prospect. In this paper, the physical properties of magnetically rotating sliding arc discharge plasma under air carrier gas were studied, and the experiment of partial oxidation and reforming of methane to hydrogen was carried out. The results show that when the air volume flow rate is 2 L min and 8 L min, respectively, the arc can rotate stably at 16 L/min, and the highest speed is 111r 路s, and there is a fixed discharge period. Different from the traditional blade sliding arc, the magnetic rotating sliding arc can still maintain stable operation and long arc length at the volume flow rate of 2 L/min, which is beneficial to the full reaction. Arc length and diameter have direct effects on discharge voltage, current, power, current density, electric field intensity and conductivity. In the partial oxidative reforming of methane to hydrogen production, the conversion of CH_4 and the selectivity of H 鈮，

本文編號：2486370