CAJ | 학술논문

LDPE树脂工业化过程中二次压缩机及中冷器普遍存在聚乙烯结垢问题。熔融指数、密度测试结果显示，二次机和中冷器结垢物熔融指数及密度均分别为0.03g/10min，0.942g/cm3及0.12g/10min，0.936g/cm3，表明污垢并非来自高压循环气系统夹带。FT-IR测试结果，显示合格LDPE树脂和结垢物图谱在1364.69cm-1，1375.24cm-1中均出现叔丁基特征峰；在1721.42cm-1及1740cm-1均出现了酯类C=O伸缩振动吸收峰。红外图谱并未出现醚类碳-氧吸收峰，表明过氧化引发剂参与结垢物形成，氧气并未参与组合阀及中冷器污垢形成反应。本文证实了自由基来源、聚乙烯白色污垢的成因，对解决LDPE工业化过程中组合阀、中冷器结垢问题具有重要参考价值。
LDPE수지공업화과정중이차압축궤급중랭기보편존재취을희결구문제。용융지수、밀도측시결과현시，이차궤화중랭기결구물용융지수급밀도균분별위0.03g/10min，0.942g/cm3급0.12g/10min，0.936g/cm3，표명오구병비래자고압순배기계통협대。FT-IR측시결과，현시합격LDPE수지화결구물도보재1364.69cm-1，1375.24cm-1중균출현숙정기특정봉；재1721.42cm-1급1740cm-1균출현료지류C=O신축진동흡수봉。홍외도보병미출현미류탄-양흡수봉，표명과양화인발제삼여결구물형성，양기병미삼여조합벌급중랭기오구형성반응。본문증실료자유기래원、취을희백색오구적성인，대해결LDPE공업화과정중조합벌、중랭기결구문제구유중요삼고개치。
Fouling is widely found in super compressor and intercooler during the production of low density polyethylene. Melt index and density measurements show that polyethylene samples from super compressor and intercooler are 0.03g/10min, 0.942g/cm3, and 0.12g/10min, 0.936g/cm3, respectively, which indicates there are not entrainments from high pressure cycle gas system. FT-IR results of merchantable polyethylene pellets and fouling samples both show characteristic peak of tert-butyl at 1364.69cm-1, 1375.24cm-1, and C=O of ester at 1721.42cm-1, 1740cm-1. Characteristic peak of C-O is not found in the spectrum which means oxygen does not work as initiator during the formation of the fouling. This article has fairly explained the source of the free radical and formation of fouling in the super compressor and intercooler which is meaning?ful in the ways to solving this specific problem.