本文主要研究内容
作者孙秋南（2019）在《多孔孔板鼓泡特性研究》一文中研究指出：严重事故条件下,安全壳过滤排放系统能够有效降低放射性物质泄露到环境中的风险。鼓泡式过滤器除具有热容量大、容尘量大、可靠性高等湿式过滤手段所固有的优点外,对甲基碘等难于去除的放射性气体具有较理想的过滤效率,现已在安全壳过滤排放系统得到应用。多孔孔板作为鼓泡式过滤器的核心部件,具有结构简单、易加工、不易堵塞等优点。本文利用可视化实验系统对多孔孔板特性开展实验研究,结合实验结果,建立了描述多孔孔板鼓泡过程的理论模型,为多孔孔板的结构设计提供理论依据。本文针对气泡聚合现象、气腔渗液现象和气泡脱离体积等直接影响鼓泡器曝气性能的鼓泡特性进行研究,重点分析了孔径、孔间距、孔板厚度、开孔数量、气腔体积及状态等鼓泡器结构参数和气体流量、液相温度、液相组分、孔板淹没深度等运行参数的影响。根据可视化实验结果,对孔板附近气泡聚合行为进行了分类。基于气泡聚合类型,制定了合理的气泡聚合效率统计方法。研究结果表明:气泡聚合效率随着气体流量增加和孔间距减小而明显增大;孔板开孔数量增加导致孔板附近扰动增强,聚合效率随之下降;液相中含有无机盐、乙醇和表面活性剂时,气泡聚合受到抑制;不同种类的添加剂对气泡聚合的抑制效果相差较大,具有挥发性的添加剂对气泡聚合抑制作用最大。以伽利略数、邦德数为特征量定义了气泡聚合时间,可以看出,聚合效率随聚合时间增加成对数规律下降。根据实验结果建立计算多孔孔板附近气泡聚合效率的关系式。气腔渗液过程持续时间较短,多数情况下不超过30分钟,即已达到满水状态。在此状态下,多孔鼓泡受到抑制,孔板曝气性能下降。气泡聚合现象对渗液速率产生明显影响,孔间距减小导致气泡聚合增大,进而导致渗液速率上升。当孔板淹没深度大于1cm时,淹没深度对渗液速率没有影响。气腔渗液速率随气体流量、开孔数量、孔板厚度等参数的变化是非单调的,随着三个参量中任意一个增加,渗液速率均先增大后减小。气泡脱离体积主要受气腔压力变化的影响,而气腔压力变化取决于气腔体积和气体流量的相对关系。当气腔压力状态为恒压区时,平均气泡脱离体积不随气体流量的变化而发生改变;当气腔压力状态处于过渡区时,平均气泡脱离体积随气体流量的增加而增大。恒压区和过渡区之间的转换气体流量随孔板开孔数量增加而增大。利用本文提出的气泡聚合效率计算关系式和描述多孔孔板鼓泡过程的理论模型对多孔孔板进行设计,可有效避免多孔孔板鼓泡过程中出现气泡聚合现象和气腔渗液现象并保证气腔压力变化处于恒压区。
Abstract
yan chong shi gu tiao jian xia ,an quan ke guo lv pai fang ji tong neng gou you xiao jiang di fang she xing wu zhi xie lou dao huan jing zhong de feng xian 。gu pao shi guo lv qi chu ju you re rong liang da 、rong chen liang da 、ke kao xing gao deng shi shi guo lv shou duan suo gu you de you dian wai ,dui jia ji dian deng nan yu qu chu de fang she xing qi ti ju you jiao li xiang de guo lv xiao lv ,xian yi zai an quan ke guo lv pai fang ji tong de dao ying yong 。duo kong kong ban zuo wei gu pao shi guo lv qi de he xin bu jian ,ju you jie gou jian chan 、yi jia gong 、bu yi du sai deng you dian 。ben wen li yong ke shi hua shi yan ji tong dui duo kong kong ban te xing kai zhan shi yan yan jiu ,jie ge shi yan jie guo ,jian li le miao shu duo kong kong ban gu pao guo cheng de li lun mo xing ,wei duo kong kong ban de jie gou she ji di gong li lun yi ju 。ben wen zhen dui qi pao ju ge xian xiang 、qi qiang shen ye xian xiang he qi pao tuo li ti ji deng zhi jie ying xiang gu pao qi bao qi xing neng de gu pao te xing jin hang yan jiu ,chong dian fen xi le kong jing 、kong jian ju 、kong ban hou du 、kai kong shu liang 、qi qiang ti ji ji zhuang tai deng gu pao qi jie gou can shu he qi ti liu liang 、ye xiang wen du 、ye xiang zu fen 、kong ban yan mei shen du deng yun hang can shu de ying xiang 。gen ju ke shi hua shi yan jie guo ,dui kong ban fu jin qi pao ju ge hang wei jin hang le fen lei 。ji yu qi pao ju ge lei xing ,zhi ding le ge li de qi pao ju ge xiao lv tong ji fang fa 。yan jiu jie guo biao ming :qi pao ju ge xiao lv sui zhao qi ti liu liang zeng jia he kong jian ju jian xiao er ming xian zeng da ;kong ban kai kong shu liang zeng jia dao zhi kong ban fu jin rao dong zeng jiang ,ju ge xiao lv sui zhi xia jiang ;ye xiang zhong han you mo ji yan 、yi chun he biao mian huo xing ji shi ,qi pao ju ge shou dao yi zhi ;bu tong chong lei de tian jia ji dui qi pao ju ge de yi zhi xiao guo xiang cha jiao da ,ju you hui fa xing de tian jia ji dui qi pao ju ge yi zhi zuo yong zui da 。yi ga li lve shu 、bang de shu wei te zheng liang ding yi le qi pao ju ge shi jian ,ke yi kan chu ,ju ge xiao lv sui ju ge shi jian zeng jia cheng dui shu gui lv xia jiang 。gen ju shi yan jie guo jian li ji suan duo kong kong ban fu jin qi pao ju ge xiao lv de guan ji shi 。qi qiang shen ye guo cheng chi xu shi jian jiao duan ,duo shu qing kuang xia bu chao guo 30fen zhong ,ji yi da dao man shui zhuang tai 。zai ci zhuang tai xia ,duo kong gu pao shou dao yi zhi ,kong ban bao qi xing neng xia jiang 。qi pao ju ge xian xiang dui shen ye su lv chan sheng ming xian ying xiang ,kong jian ju jian xiao dao zhi qi pao ju ge zeng da ,jin er dao zhi shen ye su lv shang sheng 。dang kong ban yan mei shen du da yu 1cmshi ,yan mei shen du dui shen ye su lv mei you ying xiang 。qi qiang shen ye su lv sui qi ti liu liang 、kai kong shu liang 、kong ban hou du deng can shu de bian hua shi fei chan diao de ,sui zhao san ge can liang zhong ren yi yi ge zeng jia ,shen ye su lv jun xian zeng da hou jian xiao 。qi pao tuo li ti ji zhu yao shou qi qiang ya li bian hua de ying xiang ,er qi qiang ya li bian hua qu jue yu qi qiang ti ji he qi ti liu liang de xiang dui guan ji 。dang qi qiang ya li zhuang tai wei heng ya ou shi ,ping jun qi pao tuo li ti ji bu sui qi ti liu liang de bian hua er fa sheng gai bian ;dang qi qiang ya li zhuang tai chu yu guo du ou shi ,ping jun qi pao tuo li ti ji sui qi ti liu liang de zeng jia er zeng da 。heng ya ou he guo du ou zhi jian de zhuai huan qi ti liu liang sui kong ban kai kong shu liang zeng jia er zeng da 。li yong ben wen di chu de qi pao ju ge xiao lv ji suan guan ji shi he miao shu duo kong kong ban gu pao guo cheng de li lun mo xing dui duo kong kong ban jin hang she ji ,ke you xiao bi mian duo kong kong ban gu pao guo cheng zhong chu xian qi pao ju ge xian xiang he qi qiang shen ye xian xiang bing bao zheng qi qiang ya li bian hua chu yu heng ya ou 。
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论文作者分别是来自哈尔滨工程大学的孙秋南，发表于刊物哈尔滨工程大学2019-07-01论文，是一篇关于多孔孔板论文,鼓泡特性论文,气泡聚合论文,气腔渗液论文,气泡脱离体积论文,哈尔滨工程大学2019-07-01论文的文章。本文可供学术参考使用，各位学者可以免费参考阅读下载，文章观点不代表本站观点，资料来自哈尔滨工程大学2019-07-01论文网站，若本站收录的文献无意侵犯了您的著作版权，请联系我们删除。
标签：多孔孔板论文; 鼓泡特性论文; 气泡聚合论文; 气腔渗液论文; 气泡脱离体积论文; 哈尔滨工程大学2019-07-01论文;