【Key words】 Daqing Ethylene； Expansion and Reconstruction； De-bottle-neck； Optimal Technique；
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By reviewing the basic expansion and reconstruction models of several big ethylene devices in china, and its character of technology process, we get the basic thought of the 600,000 ton ethylene expansion and reconstruction of daqing ethylene devices.
在综合国内几大乙烯装置扩能改造的基本模式，以及大庆乙烯装置自身的工艺技术特点，提出了大庆乙烯装置60万吨扩能改造的基本思路。
参考来源 - 大庆乙烯装置60万吨扩能改造的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
研究了利用大庆乙烯生产装置副产的c_9馏分合成油溶性石油树脂。
This paper states that petroleum resin is synthesised by using fractions of C_9, which are the by-product of Daqing ethene unit.
大庆乙烯提高竞争力的途径是通过技术进步，降低原料消耗，改进产品性能，提高装置能力等。
To decrease the consumption of raw materials and improve the products' performances, increase the capacities of plants are the approach to improve the competitiveness.
介绍了湿式氧化工艺处理大庆石化乙烯废碱液的工艺原理及运行结果。
The paper introduced the principle and result of treating spent caustic by wet air oxidation in the Daqing petrochemical company.
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