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1. 发明申请

US20070207072A1 Apparatus for preparing Hydrazo-Dicarbonamide using urea as starting material 有权
标题翻译：使用尿素作为起始原料制备氢代 - 二碳酰胺的装置
公开(公告)号：US20070207072A1
公开(公告)日：2007-09-06
申请号：US11747596
申请日：2007-05-11
申请人： Chun-hyuk Lee , Sang-Jin Han
发明人： Chun-hyuk Lee , Sang-Jin Han
IPC分类号： B01J8/00 , C07C281/06
CPC分类号： C07C281/06
摘要： The present invention relates to a method and apparatus for preparing hydrazodicarbonamide using urea as starting material economically and environmentally desirably. The apparatus includes a pyrolysis furnace to obtain biuret and ammonia by pyrolyzing urea; a recrystallization reactor to purify the biuret obtained from the pyrolysis furnace; a first reactor to obtain an metal monohalobiuret salt by reacting the biuret with metal hypohalogen compound or with halogen and base; a second reactor to synthesize the hydrazodicarbonamide by reacting the monohalobiuret metal salt with ammonia; and an ammonia evaporator to separate the excess ammonia from hydrazodicarbonamide and to supply the separated ammonia to an ammonia concentrator.
摘要翻译：本发明涉及一种以经济和环保方式使用尿素作为原料制备肼基二酰胺的方法和装置。该装置包括热解炉，通过热解尿素获得缩二脲和氨; 用于纯化从热解炉获得的缩二脲的再结晶反应器; 通过使缩二脲与金属低卤化合物或与卤素和碱反应获得金属单卤代硼酸盐的第一反应器; 第二反应器，通过使单卤代硼烷金属盐与氨反应合成肼二酰胺; 和氨蒸发器，以将过量的氨与肼基二酰胺分离，并将分离的氨供应到氨浓缩器。

2. 发明授权

US07422727B2 Apparatus for preparing hydrazo-dicarbonamide using urea as starting material 有权
标题翻译：使用尿素作为起始原料制备二氢萘二甲酰胺的装置
公开(公告)号：US07422727B2
公开(公告)日：2008-09-09
申请号：US11747596
申请日：2007-05-11
申请人： Chun-hyuk Lee , Sang-Jin Han
发明人： Chun-hyuk Lee , Sang-Jin Han
IPC分类号： B01J8/04 , B01J8/00 , B01J10/00 , C07C281/00
CPC分类号： C07C281/06
摘要： The present invention relates to a method and apparatus for preparing hydrazodicarbonamide using urea as starting material economically and environmentally desirably. The apparatus includes a pyrolysis furnace to obtain biuret and ammonia by pyrolyzing urea; a recrystallization reactor to purify the biuret obtained from the pyrolysis furnace; a first reactor to obtain an metal monohalobiuret salt by reacting the biuret with metal hypohalogen compound or with halogen and base; a second reactor to synthesize the hydrazodicarbonamide by reacting the monohalobiuret metal salt with ammonia; and an ammonia evaporator to separate the excess ammonia from hydrazodicarbonamide and to supply the separated ammonia to an ammonia concentrator.
摘要翻译：本发明涉及一种以经济和环保方式使用尿素作为原料制备肼基二酰胺的方法和装置。该装置包括热解炉，通过热解尿素获得缩二脲和氨; 用于纯化从热解炉获得的缩二脲的再结晶反应器; 通过使缩二脲与金属低卤化合物或与卤素和碱反应获得金属单卤代硼酸盐的第一反应器; 第二反应器，通过使单卤代硼烷金属盐与氨反应合成肼二酰胺; 和氨蒸发器，以将过量的氨与肼基二酰胺分离，并将分离的氨供应到氨浓缩器。

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