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2. 发明公开

EP2437054A1 METHOD FOR ANALYZING AQUEOUS AMMONIUM CARBAMATE SOLUTION, AND METHOD FOR OPERATING UNREACTED GAS-ABSORPTION TANK 有权
标题翻译：分析用于制备尿素的含水的氨基甲酸铵溶液和过程的方法
公开(公告)号：EP2437054A1
公开(公告)日：2012-04-04
申请号：EP10780409.8
申请日：2010-05-12
申请人： TOYO ENGINEERING CORPORATION
发明人： SAKATA, Eiji , YOSHIMOTO, Kenji , NAKAMURA, Shuhei
IPC分类号： G01N33/00 , C07C273/04
CPC分类号： C07C273/04 , Y10T137/0318 , Y10T436/173845 , Y10T436/175383
摘要： There are provided a method for analyzing an aqueous ammonium carbamate solution whereby the composition of an unreacted-gas absorber outlet liquid can be specified in real time, and a method for operating an unreacted gas absorber by use of the same. The method for analyzing the composition of an aqueous ammonium carbamate solution includes determining ammonia component concentration, carbon dioxide component concentration, and water concentration of the aqueous ammonium carbamate solution, which is the unreacted-gas absorber outlet liquid in a urea production process, by using a correlation among viscosity, temperature, and carbon dioxide component concentration of the aqueous solution and a correlation among density, temperature, ammonia component concentration, and carbon dioxide component concentration of the aqueous solution, wherein the ammonia component concentration is a concentration of a sum of free ammonia and equivalent ammonia of ammonium carbamate which are contained in the aqueous solution, and the carbon dioxide component concentration is a concentration of equivalent carbon dioxide of ammonium carbamate contained in the aqueous solution.
摘要翻译：提供了用于在wässrige氨基甲酸铵溶液，由此分析未反应气体吸收槽出口液的组成可以实时指定的方法，和用于通过使用相同的未反应气体吸收的操作的方法。用于分析氨基甲酸铵水溶液的组合物的方法包括：确定采矿氨成分浓度，二氧化碳成分浓度，并且wässrige氨基甲酸铵溶液的水的浓度，所有这一切是在尿素生产过程中未反应的气体吸收槽出口液体，通过使用粘度，温度，以及wässrige溶液的二氧化碳成分浓度和密度，温度，氨成分浓度之间的相关性，并且wässrige溶液的二氧化碳成分浓度，worin氨成分浓度之间的相关性是的总和的浓度游离氨和氨当量氨基甲酸铵，其被容纳在wässrige溶液中，将二氧化碳成分浓度是二氧化碳当量包含在wässrige溶液的氨基甲酸铵的浓度。

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