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巢亚军 《化学工业与工程技术》2013,(1):11-11
<正>日前,丙烯双氧水制环氧丙烷工业生产装置在长炼开工建设。丙烯双氧水制环氧丙烷生产工艺技术由长炼自主开发,装置建设预计投资12.8亿元,设计产能为10万t/a,属于全球第一套。环氧丙烷是除聚丙烯和丙烯腈之外的第三大丙烯衍生物,是重要的基本有机化工合成原料,主要用于生产聚醚、内二醇等。下游产品近百种,广泛用于汽车、建筑、食品、烟草、医药及化妆品等行业。现有的环氧丙烷生产技术存在污染环境、腐蚀设备的问题,且联产副产物量大、工艺冗长、设备投资大、原子利用率 相似文献
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于剑昆 《化学推进剂与高分子材料》2013,(5):33
<正>2013年1月5日,丙烯双氧水制环氧丙烷工业生产装置在湖南岳阳云溪工业园长岭分园动工建设。装置建设预计投资12.8亿元,设计产能100 kt/a。双氧水制环氧丙烷技术由中国石化长岭分公司与中国石化石油化工科学研究院、湖南长岭石化科技开发有限公司合作,自主开发出这一工艺,并于2010年7月在 相似文献
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从几个方面对影响丙烯单耗的因素进行了查找,收集了生产中有关数据进行探讨,采取了相应的降耗措施,取得了较好的经济效益。 相似文献
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对气化装置捞渣机投入运行后产生链条频繁脱轨、转向轮轴、张紧轮轴、压紧轮轴的轴颈严重磨损等故障的原因进行了分析。提出了改进措施及建议。 相似文献
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环氧丙烷是重要的基础化工原料,主要用于生产聚氨酯、不饱和树脂和表面活性剂等,市场需求不断增加。目前全世界的产量为450万吨/年, 相似文献
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以环氧丙烷改性异氰酸酯、聚醚多元醇、催化剂、泡沫稳定剂及发泡剂等为原料,制备得到环氧丙烷改性聚异氰脲酸酯泡沫塑料。红外光谱检测表明,环氧丙烷改性聚异氰脲酸酯泡沫塑料有异氰脲酸酯环生成;尺寸稳定性测试结果表明:环氧丙烷改性聚异氰脲酸酯泡沫塑料的耐温性有明显提高。 相似文献
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氯丙醇减压皂化生产环氧丙烷*刘家祺孙广智刘禾(天津大学化工系,天津300072)(天津化工设计院,天津300193)氯丙醇减压皂化生产环氧丙烷*刘家祺孙广智刘禾(天津大学化工系,天津300072)(天津化工设计院,天津300193)关键词氯丙醇环氧丙... 相似文献
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环氧丙烷与二氧化碳合成碳酸丙烯酯 总被引:1,自引:0,他引:1
介绍了PC的性质、应用情况和生产工艺。通过对影响合成PC的主要因素和机理的讨论,指出催化剂和溶剂是影响PC收率的重要因素,较高的压力对提高产品的选择性有利。 相似文献
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The direct oxidation of propylene to propylene oxide (PO) using molecular oxygen has many advantages over existing chlorohydrin and hydroperoxide process, which produce side products and require complex purification schemes. Recent advances in liquid-phase and gas-phase catalytic oxidation of propylene in the presence of only molecular oxygen as oxidant and in absence of reducing agents are summarized. Liquid-phase PO processes involving soluble or insoluble Mo, W, or V catalysts have been reported which provide moderate conversions and selectivities, but these likely involve autoxidation by homogeneous chain reactions. Gas-phase PO catalysts have been mostly Ag-, Cu-, or TiO2-based substances, although other compositions such as Au-, MoO3-, Bi-based catalysts and photocatalysts have also been suggested as possibilities. The Ag catalysts differ from those used for ethylene oxide production in having high Ag contents and numerous additives. The additives are solid-phase alkali metals, alkaline earth metals, and halogens, with the most common substances being NaCl and CaCO3. Nitrogen oxides in the form of gas-phase species or nitrates have also been found to be effective in enhancing PO production. Direct epoxidation by surface nitrates is a possibility. Titania catalysts supported on silicates have also been reported. These have higher PO selectivities at high conversion than silver catalysts. 相似文献
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Shiyong Huang Shuigang Liu Junping Li Ning Zhao Wei Wei Yuhan Sun 《Catalysis Letters》2007,118(3-4):290-294
A series of modified zinc oxide catalysts were prepared and their catalytic activities were evaluated by the direct synthesis
of propylene carbonate from propylene glycol and carbon dioxide in the presence of acetonitrile, which acted as not only the
solvent but also the dehydrating reagent in the reaction. The reusability test indicated that the modified catalysts had the
high stability. Ammonium carbonate was added into the reaction to significantly elevate the selectivity of propylene carbonate. 相似文献
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