本文主要研究内容
作者王菲（2019）在《蔗糖粉尘的抑爆试验及机理研究》一文中研究指出：为预防蔗糖粉尘爆炸事故的发生,控制事故的后果,本研究以氯化钠、碳酸氢钠为惰性介质,预先与蔗糖粉尘混合,并利用1.2L哈特曼管、Godbert-Greenwald加热炉以及20L球形爆炸测试装置,通过试验手段研究惰性粉尘对蔗糖粉尘着火敏感性参数和爆炸严重性参数的影响规律,从物理作用和化学机制两个角度,总结并对比氯化钠与碳酸氢钠在蔗糖粉尘爆炸抑制作用上的异同。研究结果表明:(1)增加惰性粉尘在混合粉尘中的比例能有效提高蔗糖粉尘的着火敏感性参数值,氯化钠、碳酸氢钠质量分数分别为39.0%、22.0%时混合粉尘云最小点火能达到lOOOmJ,蔗糖粉尘被完全惰化;蔗糖粉尘完全惰化需求量随蔗糖粉尘浓度增加而先增加后减少,417g/m3为蔗糖粉尘燃烧最敏感浓度,此浓度的蔗糖粉尘最不易被完全惰化。(2)惰性粉尘粒径为37～47μm时阻燃效果最佳,随粒径增大阻燃效果减弱,表现为蔗糖粉尘完全惰化需求量随惰性粉尘粒径增大而增多,氯化钠粒径大于75μm时完全惰化需求量高达71.5%。(3)增加碳酸氢钠混合比能显著降低爆炸严重性参数值,在蔗糖粉尘浓度范围350g/m3～l000g/m3,以48～75μm碳酸氢钠为惰性介质得到最小惰化浓度10.41%;碳酸氢钠质量分数仅为1%时,20L球中蔗糖粉尘的Kst=14.92MPa.m/s,粉尘爆炸危险性己显著降低。(4)氯化钠主要依靠隔热、屏蔽及稀释可燃粉尘浓度等物理方式发挥火焰抑制作用;碳酸氢钠具有特殊的自由基结合反应,在物理与化学的协同作用下,其抑制效力在一定程度上优于氯化钠。本文所得数据与结论可为制糖过程中的粉尘爆炸事故预防和控制措施提供更系统的安全设计依据,对制糖行业的安全生产具有重要意义。
Abstract
wei yu fang zhe tang fen chen bao zha shi gu de fa sheng ,kong zhi shi gu de hou guo ,ben yan jiu yi lv hua na 、tan suan qing na wei duo xing jie zhi ,yu xian yu zhe tang fen chen hun ge ,bing li yong 1.2Lha te man guan 、Godbert-Greenwaldjia re lu yi ji 20Lqiu xing bao zha ce shi zhuang zhi ,tong guo shi yan shou duan yan jiu duo xing fen chen dui zhe tang fen chen zhao huo min gan xing can shu he bao zha yan chong xing can shu de ying xiang gui lv ,cong wu li zuo yong he hua xue ji zhi liang ge jiao du ,zong jie bing dui bi lv hua na yu tan suan qing na zai zhe tang fen chen bao zha yi zhi zuo yong shang de yi tong 。yan jiu jie guo biao ming :(1)zeng jia duo xing fen chen zai hun ge fen chen zhong de bi li neng you xiao di gao zhe tang fen chen de zhao huo min gan xing can shu zhi ,lv hua na 、tan suan qing na zhi liang fen shu fen bie wei 39.0%、22.0%shi hun ge fen chen yun zui xiao dian huo neng da dao lOOOmJ,zhe tang fen chen bei wan quan duo hua ;zhe tang fen chen wan quan duo hua xu qiu liang sui zhe tang fen chen nong du zeng jia er xian zeng jia hou jian shao ,417g/m3wei zhe tang fen chen ran shao zui min gan nong du ,ci nong du de zhe tang fen chen zui bu yi bei wan quan duo hua 。(2)duo xing fen chen li jing wei 37～47μmshi zu ran xiao guo zui jia ,sui li jing zeng da zu ran xiao guo jian ruo ,biao xian wei zhe tang fen chen wan quan duo hua xu qiu liang sui duo xing fen chen li jing zeng da er zeng duo ,lv hua na li jing da yu 75μmshi wan quan duo hua xu qiu liang gao da 71.5%。(3)zeng jia tan suan qing na hun ge bi neng xian zhe jiang di bao zha yan chong xing can shu zhi ,zai zhe tang fen chen nong du fan wei 350g/m3～l000g/m3,yi 48～75μmtan suan qing na wei duo xing jie zhi de dao zui xiao duo hua nong du 10.41%;tan suan qing na zhi liang fen shu jin wei 1%shi ,20Lqiu zhong zhe tang fen chen de Kst=14.92MPa.m/s,fen chen bao zha wei xian xing ji xian zhe jiang di 。(4)lv hua na zhu yao yi kao ge re 、bing bi ji xi shi ke ran fen chen nong du deng wu li fang shi fa hui huo yan yi zhi zuo yong ;tan suan qing na ju you te shu de zi you ji jie ge fan ying ,zai wu li yu hua xue de xie tong zuo yong xia ,ji yi zhi xiao li zai yi ding cheng du shang you yu lv hua na 。ben wen suo de shu ju yu jie lun ke wei zhi tang guo cheng zhong de fen chen bao zha shi gu yu fang he kong zhi cuo shi di gong geng ji tong de an quan she ji yi ju ,dui zhi tang hang ye de an quan sheng chan ju you chong yao yi yi 。
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论文作者分别是来自广西大学的王菲，发表于刊物广西大学2019-10-14论文，是一篇关于蔗糖粉尘论文,氯化钠论文,碳酸氢钠论文,惰化论文,抑爆机理论文,广西大学2019-10-14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，资料来自广西大学2019-10-14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。