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Urea Preparation by Oxidative Carbonylation of Ammonia 被引量:2

Urea Preparation by Oxidative Carbonylation of Ammonia
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摘要 Effective one-stage method of urea preparation by catalytic oxidative carbonylation of ammonia in liquid phase is developed. The method allows to prepare urea with productivity of-530 g/(L·h) in sufficiently mild conditions (total pressure -30 bar, 45 ℃). The process is characterized by high selectivity (near 100%) i.e. byproducts separation is not needed. Almost all CO is consumed during the process, this substantially diminishes the waste-gas purification costs and raises the process environmental characteristics; the only byproduct is water.
机构地区 Rostkhim
出处 《Journal of Environmental Science and Engineering》 2011年第8期1006-1012,共7页 环境科学与工程(英文版)
关键词 UREA ammonia oxidative carbonylation SELENIUM heat efficiency 制备方法 氨氧化 尿素 液相氧化 高选择性 产品分离 二氧化碳 环境特性
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