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    • 1. 发明授权
    • Method for analyzing aqueous ammonium carbamate solution, and method for operating unreacted gas absorber
    • 用于分析氨基甲酸铵水溶液的方法和操作未反应的气体吸收剂的方法
    • US08663995B2
    • 2014-03-04
    • US13321529
    • 2010-05-12
    • Eiji SakataKenji YoshimotoShuhei Nakamura
    • Eiji SakataKenji YoshimotoShuhei Nakamura
    • F17D3/00G01N33/18G01N33/00
    • C07C273/04Y10T137/0318Y10T436/173845Y10T436/175383
    • 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.
    • 提供了一种用于分析氨基甲酸铵水溶液的方法,其中可以实时指定未反应气体吸收剂出口液体的组成,以及使用该方法操作未反应的气体吸收剂。 用于分析氨基甲酸铵水溶液的组成的方法包括在尿素生产过程中测定作为未反应气体吸收剂出口液体的氨基甲酸铵水溶液的氨组分浓度,二氧化碳组分浓度和水浓度,通过使用 水溶液的粘度,温度和二氧化碳组分浓度之间的相关性以及水溶液的密度,温度,氨组分浓度和二氧化碳组分浓度之间的相关性,其中氨组分浓度是 游离氨和氨水溶液中的氨基甲酸铵等量的氨,二氧化碳成分浓度是水溶液中含有的氨基甲酸铵的二氧化碳当量浓度。
    • 9. 发明申请
    • METHOD FOR ANALYZING AQUEOUS AMMONIUM CARBAMATE SOLUTION, AND METHOD FOR OPERATING UNREACTED GAS ABSORBER
    • 用于分析水溶性氨基甲酸铵溶液的方法和操作无气体吸收剂的方法
    • US20120060931A1
    • 2012-03-15
    • US13321529
    • 2010-05-12
    • Eiji SakataKenji YoshimotoShuhei Nakamura
    • Eiji SakataKenji YoshimotoShuhei Nakamura
    • F17D3/00G01N33/18
    • C07C273/04Y10T137/0318Y10T436/173845Y10T436/175383
    • 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.
    • 提供了一种用于分析氨基甲酸铵水溶液的方法,其中可以实时指定未反应气体吸收剂出口液体的组成,以及使用该方法操作未反应的气体吸收剂。 用于分析氨基甲酸铵水溶液的组成的方法包括在尿素生产过程中测定作为未反应气体吸收剂出口液体的氨基甲酸铵水溶液的氨组分浓度,二氧化碳组分浓度和水浓度,通过使用 水溶液的粘度,温度和二氧化碳组分浓度之间的相关性以及水溶液的密度,温度,氨组分浓度和二氧化碳组分浓度之间的相关性,其中氨组分浓度是 游离氨和氨水溶液中的氨基甲酸铵等量的氨,二氧化碳成分浓度是水溶液中含有的氨基甲酸铵的二氧化碳当量浓度。