植酸-胞嘧啶对DL-蛋氨酸粉尘爆燃火焰抑制特性研究  

Research on Inhibitory Characteristics of Phytic Acid-Cytidine on DL-Methionine Dust Explosion Flames

作　　者：王昊[1] 张英[1] 周林[1] 赵齐 WANG Hao;ZHANG Ying;ZHOU Lin;ZHAO Qi(School of Safety Science and Emergency Management,Wuhan University of Technology,Wuhan 430070,China)

机构地区：[1]武汉理工大学安全科学与应急管理学院,武汉430070

出　　处：《爆破》2024年第2期238-244,共7页Blasting

基　　金：国家自然科学基金资助项目(52104211);国家资助博士后研究人员计划(GZC20232006);中央高校基本科研业务(WUT:2023IVA093)。

摘　　要：饲料及其添加剂粉尘具有较高的燃烧热,在生产过程中存在一定的爆燃风险,威胁生命财产安全,预混抑制剂是目前应用最为广泛的一种抑爆手段,但传统抑制剂不可食用,无法加入至饲料类粉尘实现抑爆。因此,以饲料主要添加剂DL-蛋氨酸(DLM)粉尘为研究对象,采用自主合成的营养价值高、绿色可食用生物质基植酸-胞嘧啶(PA-CY),研究了PA-CY对DLM粉尘爆燃火焰传播特性的影响,通过高速摄影和可视化竖直管道记录爆燃火焰传播过程并计算火焰速度,采用热电偶监测火焰温度变化。结果表明:随PA-CY质量分数的升高DLM爆燃火焰亮度持续下降,严重破坏了火焰结构,加入20%PA-CY后火焰峰值速度、平均速度和峰值温度由27.66 m/s、14.39 m/s、1014℃分别下降至13.83 m/s、6.88 m/s、540℃,下降比重达50.0%、52.2%和46.7%,且PA-CY质量分数达30%后粉尘无法被点燃,说明PA-CY抑制效果显著。此结果可为饲料类粉尘爆燃的防治提供理论支持。Feed and its additive dusts have a high combustion heat,which poses significant risks of dust explosions during production,thereby threatening life and property safety.Currently,premix inhibitors are widely used as explosion suppression measures.However,traditional inhibitors are inedible and cannot be added to feed dust to achieve explosion suppression.Therefore,this study focuses on the dust of DL-methionine(DLM),a primary additive in feed,and investigates the effect of self-synthesized phytic acid-cytosine(PA-CY),an edible biomass-based compound with nutritional value and environmental friendliness,on the flame propagation characteristics of DLM dust explosions.The flame propagation process was recorded through high-speed photography and visualized in a vertical pipe while calculating the flame velocity.Additionally,thermocouples were used to monitor changes in flame temperature.The results indicate that as the mass fraction of PA-CY increases,the luminosity of DLM dust explosion flames consistently decreases,severely disrupting the flame structure.After adding 20%PA-CY,there is a reduction of 50.0%,52.2%,and 46.7%in peak velocity(from 27.66 m/s to 13.83 m/s),average velocity(from 14.39 m/s to 6.88 m/s),and peak temperature(from 1014℃to 540℃)respectively.Moreover,when the mass fraction of PA-CY reaches 30%,ignition of the dust cannot occur indicating significant inhibitory effects provided by PA-CY.

关 键 词：粉尘爆炸 DL-蛋氨酸 植酸-胞嘧啶 火焰传播 抑制特性 

分 类 号：X932[环境科学与工程—安全科学]