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自吸式文丘里洗涤器引射量实验研究 被引量:4
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作者 郭建章 徐银谋 +4 位作者 赵祥迪 袁纪武 孙万付 杨帅 刘基铭 《工业安全与环保》 2018年第10期54-57,共4页
以自吸式文丘里洗涤器为研究对象,采用空气-水为工作介质,针对喉部气速、吸液口静压差、喉部间距等因素对文丘里洗涤器引射特性的影响进行实验研究。结果表明,随着喉部气速的增加,文丘里洗涤器引射量呈快速增长趋势,且吸液口静压差越高... 以自吸式文丘里洗涤器为研究对象,采用空气-水为工作介质,针对喉部气速、吸液口静压差、喉部间距等因素对文丘里洗涤器引射特性的影响进行实验研究。结果表明,随着喉部气速的增加,文丘里洗涤器引射量呈快速增长趋势,且吸液口静压差越高增长越明显,但喉部气速过大会加剧液相贴壁流动现象,降低气液接触效率;吸液口静压差对洗涤器引射量的影响程度与喉部气速有关,当喉部气速超过66. 5 m/s后,增大吸液口静压差会显著提高洗涤器引射量;喉部间距增大会降低洗涤器引射量,但有利于液相分散,强化气液相间接触,与常规文丘里脱硫除尘液量需求相比,自吸式文丘里洗涤器引射量大,实验工况下液气比最大可达3. 95 L/m3。 展开更多
关键词 文丘里洗涤器 自吸式 引射量 液相分散
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Structural Description of Polyaromatic Nucleus in Residue 被引量:1
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作者 Zhang Huicheng Yan Yongjie +1 位作者 sun wanfu Wang Jifeng 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2007年第3期35-42,共8页
The proton nuclear magnetic resonance spectroscopy (1H-NMR), the synchronous fluorescence spectrometry (SFS) and the ruthenium ions catalyzed oxidation (RICO) method were used to determine the chemical structure... The proton nuclear magnetic resonance spectroscopy (1H-NMR), the synchronous fluorescence spectrometry (SFS) and the ruthenium ions catalyzed oxidation (RICO) method were used to determine the chemical structure of polyaromatic nucleus in Oman residue fractions. The results of 1H-NMR analyses showed that the average numbers of aromatic rings in the aromatics, resins and asphaltenes units were 3.2, 5.6 and 8.2, respectively. SFS was used to investigate the distribution of aromatic rings in residue fractions, the main distribution range of aromatic rings in aromatics, resins and asphaltenes were 3 4 rings, 3--5 rings and more than 5 rings, respectively. The aromatic network in residue fractions was oxidized to produce numerous carboxylic acids. The types and content of benzenepolycarboxylic acids, such as phthalic acid, benzenetricarboxylic acids, benzenetetracarboxylic acids, benzenepentacarboxylic acid and benzenehexacarboxylic acid disclosed the condensed types of aromatic nuclei in the core. The biphenyl fraction (BIPH), the cata-condensed fraction (CATA), the peri-condensed fraction (PERI) and the condensed index (BCI) were calculated based on the benzenepolycarboxylic acids formed. The results implied that there was less biphenyl type structures in all residue fractions. The aromatics fraction was almost composed of the cata-condensed type system, and the asphaltenes fraction was wholly composed of the peri-condensed type system, while in the resins fraction co-existed the two types, herein the peri-con- densed type was predominant over the cata-condensed type. Based on the analytical results obtained in the study, the components --aromatics, resins and asphaltenes -- were given the likely structural models. 展开更多
关键词 proton nuclear magnetic resonance spectroscopy synchronous fluorescence spectrometry ruthenium ions catalyzed oxidation RESIDUE STRUCTURE
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