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公开(公告)号：EP1800745B1
公开(公告)日：2011-04-27
申请号：EP06026762.2
申请日：2006-12-22
发明人： Nishikawa, Genshi , Sakata, Eiji
CPC分类号： B01J19/26 , B01J2/16 , B01J4/002 , B01J8/1809 , B01J8/1818 , B01J8/1827 , B01J8/1854 , B01J8/245 , B01J8/386 , B01J2208/00176
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公开(公告)号：EP1279663B1
公开(公告)日：2004-09-29
申请号：EP02015611.3
申请日：2002-07-15
发明人： Sakata, Eiji , Kojima, Yasuhiko
IPC分类号： C07C273/04
CPC分类号： C07C273/04
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公开(公告)号：EP1743879B1
公开(公告)日：2011-09-14
申请号：EP06014598.4
申请日：2006-07-13
CPC分类号： B01J2/16 , C05C9/005 , C05G3/0058 , Y02P20/129
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公开(公告)号：EP1279663A1
公开(公告)日：2003-01-29
申请号：EP02015611.3
申请日：2002-07-15
发明人： Sakata, Eiji , Kojima, Yasuhiko
IPC分类号： C07C273/04
CPC分类号： C07C273/04
摘要： A process for the synthesis of urea, which comprises subjecting a urea synthesis solution from a urea synthesis column to stripping with a raw material carbon dioxide under a pressure approximately equal to the urea synthesis pressure to separate a major portion of unreacted ammonia and carbon dioxide as a mixed gas from the urea synthesis solution, condensing the mixed gas by indirect heat exchange with the urea synthesis solution from which the mixed gas was separated and that is preferably decompressed to a pressure lower than the urea synthesis pressure, and heating the urea synthesis solution by heat of condensation generated at the time of the condensation of the mixed gas.
摘要翻译： 一种合成尿素的方法，其包括在大约等于尿素合成压力的压力下使来自尿素合成塔的尿素合成溶液与原料二氧化碳一起汽提，以将大部分未反应的氨和二氧化碳分离为 来自尿素合成溶液的混合气体，通过与混合气体分离的尿素合成溶液间接热交换将混合气体冷凝，优选减压至低于尿素合成压力的压力，加热尿素合成溶液 通过在混合气体冷凝时产生的冷凝热。
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公开(公告)号：EP1279663B2
公开(公告)日：2010-07-28
申请号：EP02015611.3
申请日：2002-07-15
发明人： Sakata, Eiji , Kojima, Yasuhiko
IPC分类号： C07C273/04
CPC分类号： C07C273/04
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公开(公告)号：EP1338891B1
公开(公告)日：2005-11-30
申请号：EP03003227.0
申请日：2003-02-20
发明人： Tajiri, Yoshihiro, Mitsui Chemicals, Inc. , Hayabuchi, Takuya, Mitsui Chemicals, Inc. , Teramoto, Naohiro, Mitsui Chemicals, Inc. , Kojima, Yasuhiko , Sakata, Eiji , Morikawa, Haruyuki
CPC分类号： G01N31/002 , G01N27/021 , Y10T436/117497 , Y10T436/171538 , Y10T436/175383
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公开(公告)号：EP1338891A1
公开(公告)日：2003-08-27
申请号：EP03003227.0
申请日：2003-02-20
发明人： Tajiri, Yoshihiro, Mitsui Chemicals, Inc. , Hayabuchi, Takuya, Mitsui Chemicals, Inc. , Teramoto, Naohiro, Mitsui Chemicals, Inc. , Kojima, Yasuhiko , Sakata, Eiji , Morikawa, Haruyuki
CPC分类号： G01N31/002 , G01N27/021 , Y10T436/117497 , Y10T436/171538 , Y10T436/175383
摘要： A method for determining a urea concentration in an aqueous solution containing urea, includes: hydrolyzing the urea in the aqueous solution, measuring an electric conductivity (χ) of the aqueous solution, and determining the urea concentration in the aqueous solution from the electric conductivity (χ) using a correlation between the urea concentration and an electric conductivity.
摘要翻译： 一种用于确定性的开采方法wässrige溶液在尿素浓度含尿素，包括：水解尿素在wässrige溶液，在从导电性的wässrige溶液测量wässrige溶液的导电率（气），和确定性采矿的尿素浓度（ 气）使用的尿素浓度之间和导电性的相关性。
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8.发明公开
公开(公告)号：EP1743879A2
公开(公告)日：2007-01-17
申请号：EP06014598.4
申请日：2006-07-13
CPC分类号： B01J2/16 , C05C9/005 , C05G3/0058 , Y02P20/129
摘要： To effectively prepare granular urea that constantly has a moisture concentration of 0.3 wt% or less in the product and has a large grain load strength to be hardly crashed. In a granulating process for preparing granular urea from an aqueous urea solution using a fluidized bed method or a fluidized, spouted bed method, an aqueous urea solution having an urea concentration of 94-98.5 wt% is used, and an operation temperature of the fluidized bed is controlled in a range of 110-120°C to accelerate drying of a granulated product, thereby giving a granular urea product having moisture of 0.3 wt% or less in the product.
摘要翻译： 为了有效地制备在产品中不断具有0.3重量％以下的水分浓度的颗粒状尿素，并且具有很大的颗粒负荷强度，几乎不会崩溃。 在使用流化床法或流化喷射床法从尿素水溶液制备颗粒状尿素的造粒方法中，使用尿素浓度为94-98.5重量％的尿素水溶液，流化床 将床控制在110-120℃的范围内以加速造粒产物的干燥，从而得到产物中具有0.3重量％以下的水分的颗粒状尿素产品。
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公开(公告)号：EP1743879A3
公开(公告)日：2008-03-05
申请号：EP06014598.4
申请日：2006-07-13
CPC分类号： B01J2/16 , C05C9/005 , C05G3/0058 , Y02P20/129
摘要： To effectively prepare granular urea that constantly has a moisture concentration of 0.3 wt% or less in the product and has a large grain load strength to be hardly crashed. In a granulating process for preparing granular urea from an aqueous urea solution using a fluidized bed method or a fluidized, spouted bed method, an aqueous urea solution having an urea concentration of 94-98.5 wt% is used, and an operation temperature of the fluidized bed is controlled in a range of 110-120°C to accelerate drying of a granulated product, thereby giving a granular urea product having moisture of 0.3 wt% or less in the product.
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10.发明公开
公开(公告)号：EP1800745A1
公开(公告)日：2007-06-27
申请号：EP06026762.2
申请日：2006-12-22
发明人： Nishikawa, Genshi , Sakata, Eiji
CPC分类号： B01J19/26 , B01J2/16 , B01J4/002 , B01J8/1809 , B01J8/1818 , B01J8/1827 , B01J8/1854 , B01J8/245 , B01J8/386 , B01J2208/00176
摘要： The present invention provides a granulation method with increased drying effect while assuring the pressure for spraying the aqueous solution and the necessary number of nozzles equivalent to those of conventional design. Specifically, the granulation method uses a granulator structured by a fluid bed which fluidizes the granulating-particles, an air feed pipe to introduce air, a nozzle for spraying the raw material aqueous solution being located at center part of the air feed pipe, and a perforated plate to feed a fluidization air to the fluid bed, thus granulating the raw material aqueous solution by spraying thereof from the nozzle into a granulation part, wherein a multi-nozzle in a specified shape having a plurality of nozzle ends thereon is used as the nozzle for spraying the raw material aqueous solution.
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