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面对日益严格的节能减排要求和激烈的市场竞争,国内外炼化企业正围绕生产、运营、决策等环节积极研究并开展系统优化工作.为实现生产运营整体优化,我国炼化企业需进一步加强自主优化技术的研发、先进控制技术与模拟优化技术的集成、过程系统优化技术的推广,以及石油化工与信息技术复合型人才的培养等,并通过研究开发与实际应用,提升炼化一体化水平. 相似文献
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Phase separation behavior of cocamidopropyl betaine/water/polyethylene glycol (PEG) system was studied. The effects of concentration and molecular weight of PEG on the phase separation behavior were investigated. Clouding occurred when the con-centration of PEG was large enough in the betaine aqueous solution, and the concentration of PEG at cloud point decreased with the increase of PEG molecular weight for a constant betaine concentration. The bottom phase was the PEG-rich phase, and the upper phase was the betaine-rich phase. The volumetric ratio of PEG-rich phase to betaine-rich phase, at the same difference between the PEG concentration and the one at the cloud point, 61508;Ccp (0.1 g8226;ml-1), decreased as the PEG molecular weight increased and approached 1 for higher PEG molecular weight (about 20000), which was similar to the typical aqueous two-phase system. This volumetric ratio depended on the initial PEG concentration, but independent of PEG molecular weight. The concentration ratio of betaine to PEG in both phases depended on the 61508;Ccp, independent of PEG molecular weight. 相似文献
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