基于强电场放电协同水力空化的气液传质研究

发布时间：2018-01-11 11:13

  本文关键词：基于强电场放电协同水力空化的气液传质研究　出处：《高电压技术》2017年06期 　论文类型：期刊论文

  更多相关文章： 高级氧化技术 强电场放电 氧活性粒子 水力空化 传质系数

【摘要】：为提高氧活性粒子与水的传质速率,利用自行研制的高浓度氧活性粒子溶液产生设备,通过对液相单位体积传质系数(kLa)的计算,研究了水力空化气液混溶过程中,水温、水力空化气液混溶器进、出水端压力差(p_(in-out))和气液体积比(VG/VL)及pH值等关键参量对氧活性粒子与水传质速率的影响。研究结果表明:氧活性粒子经水力空化作用传质进入水中的传质系数远高于后续管路中的传质系数,说明水力空化对氧活性粒子向水中的传质过程起着关键作用。此外,k La随水温(10~30℃)升高,先增大后减小,随p_(in-out)(0.098~0.305 MPa)与VG/VL(0.025~0.125)增加而增加,随p H值(2.54~10.63)增加而减小,当水温为20℃,pH值为2.54,p_(in-out)为0.305 MPa,VG/VL为0.125时,kLa最大,为10.62 s~( 1)。通过对以上关键参量的研究,可进一步优化大气压强电场放电协同水力空化气液混溶高级氧化技术的应用参数与途径。
[Abstract]:In order to improve the mass transfer rate between oxygen active particles and water, the liquid phase unit volume mass transfer coefficient (KLA) was calculated by using a high concentration oxygen active particle solution generator. Water temperature and hydraulic cavitation gas-liquid mixers were studied in the process of hydraulic cavitation gas-liquid mixing. Outlet end pressure difference (PSD) and gas-liquid volume ratio (VG / VLV). The results show that the mass transfer coefficient of oxygen active particles into water through hydraulic cavitation is much higher than that in subsequent pipes. The results show that hydraulic cavitation plays a key role in the mass transfer of oxygen active particles to water. In addition, with the increase of water temperature (1030 鈩，

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