{"title":"与挥发性有机化合物混合的聚苯醚的粉尘爆炸特性和机理","authors":"","doi":"10.1016/j.psep.2024.09.034","DOIUrl":null,"url":null,"abstract":"<div><p>Polyphenylene ether (PPE), used in the production of copper-clad laminate resin, can emit methane and ethane at elevated temperature during the aforementioned production process. Moreover, a cloud of PPE dust can form during the feeding process. Both these scenarios can lead to a dust or inflammable gas explosion at the feed port. This study investigated the explosion characteristics of PPE in air, methane, and ethane atmospheres by using 20-L apparatus. The study findings revealed that the presence of methane and ethane lowered the minimum explosive concentration of PPE dust. In air, the minimum explosion concentration was 40 g/m³, which decreased to 30 and 22 g/m³, respectively, in the presence of methane and ethane. However, the addition of these gases also increased the severity of explosions from St-2 to St-3. Furthermore, the thermal depolymerisation of PPE dust was examined. PPE was discovered to undergo thermal depolymerisation when heated, releasing a substantial quantity of inflammable gases. These gases, in combination with oxygen, can form an explosive mixture, expanding the explosion range. Moreover, these inflammable gases exhibit various degrees of toxicity, posing substantial health and safety risks to workers involved in PPE manufacturing.</p></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":null,"pages":null},"PeriodicalIF":6.9000,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Dust explosion properties and mechanisms of polyphenylene ether mixed with volatile organic compounds\",\"authors\":\"\",\"doi\":\"10.1016/j.psep.2024.09.034\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Polyphenylene ether (PPE), used in the production of copper-clad laminate resin, can emit methane and ethane at elevated temperature during the aforementioned production process. Moreover, a cloud of PPE dust can form during the feeding process. Both these scenarios can lead to a dust or inflammable gas explosion at the feed port. This study investigated the explosion characteristics of PPE in air, methane, and ethane atmospheres by using 20-L apparatus. The study findings revealed that the presence of methane and ethane lowered the minimum explosive concentration of PPE dust. In air, the minimum explosion concentration was 40 g/m³, which decreased to 30 and 22 g/m³, respectively, in the presence of methane and ethane. However, the addition of these gases also increased the severity of explosions from St-2 to St-3. Furthermore, the thermal depolymerisation of PPE dust was examined. PPE was discovered to undergo thermal depolymerisation when heated, releasing a substantial quantity of inflammable gases. These gases, in combination with oxygen, can form an explosive mixture, expanding the explosion range. Moreover, these inflammable gases exhibit various degrees of toxicity, posing substantial health and safety risks to workers involved in PPE manufacturing.</p></div>\",\"PeriodicalId\":20743,\"journal\":{\"name\":\"Process Safety and Environmental Protection\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":6.9000,\"publicationDate\":\"2024-09-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Process Safety and Environmental Protection\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0957582024011595\",\"RegionNum\":2,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Process Safety and Environmental Protection","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0957582024011595","RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
摘要
用于生产覆铜板树脂的聚苯醚(PPE)在上述生产过程中会在高温下释放甲烷和乙烷。此外,在进料过程中还会形成 PPE 粉尘云。这两种情况都可能导致进料口发生粉尘或可燃气体爆炸。本研究使用 20-L 设备调查了 PPE 在空气、甲烷和乙烷气氛中的爆炸特性。研究结果表明,甲烷和乙烷的存在降低了 PPE 粉尘的最低爆炸浓度。在空气中,最小爆炸浓度为 40 克/立方米,而在有甲烷和乙烷的情况下,分别降至 30 克/立方米和 22 克/立方米。不过,加入这些气体也会使爆炸的严重程度从 St-2 级上升到 St-3 级。此外,还研究了 PPE 粉尘的热分解。研究发现,PPE 在加热时会发生热分解,释放出大量易燃气体。这些气体与氧气结合可形成爆炸性混合物,扩大爆炸范围。此外,这些易燃气体具有不同程度的毒性,对从事个人防护设备制造的工人的健康和安全构成重大风险。
Dust explosion properties and mechanisms of polyphenylene ether mixed with volatile organic compounds
Polyphenylene ether (PPE), used in the production of copper-clad laminate resin, can emit methane and ethane at elevated temperature during the aforementioned production process. Moreover, a cloud of PPE dust can form during the feeding process. Both these scenarios can lead to a dust or inflammable gas explosion at the feed port. This study investigated the explosion characteristics of PPE in air, methane, and ethane atmospheres by using 20-L apparatus. The study findings revealed that the presence of methane and ethane lowered the minimum explosive concentration of PPE dust. In air, the minimum explosion concentration was 40 g/m³, which decreased to 30 and 22 g/m³, respectively, in the presence of methane and ethane. However, the addition of these gases also increased the severity of explosions from St-2 to St-3. Furthermore, the thermal depolymerisation of PPE dust was examined. PPE was discovered to undergo thermal depolymerisation when heated, releasing a substantial quantity of inflammable gases. These gases, in combination with oxygen, can form an explosive mixture, expanding the explosion range. Moreover, these inflammable gases exhibit various degrees of toxicity, posing substantial health and safety risks to workers involved in PPE manufacturing.
期刊介绍:
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