公开(公告)号：EP2502881A1

公开(公告)日：2012-09-26

申请号：EP11159656.5

申请日：2011-03-24

申请人： Urea Casale S.A.

发明人： Filippi, Ermanno ,  Badano, Marco ,  Zardi, Federico ,  Scotto, Andrea

IPC分类号： C01C1/04 ,  C07C273/04

CPC分类号： C07C273/10 ,  C01C1/0488 ,  Y02P20/52 ,  C07C275/02

摘要： A process for ammonia-urea production where: liquid ammonia produced in an ammonia section is fed to a urea section directly at the ammonia synthesis pressure, and where the liquid ammonia is purified at high pressure with the steps of: cooling the liquid ammonia (20) obtaining a cooled liquid ammonia stream (21), separating a gaseous fraction (22) comprising hydrogen and nitrogen from said cooled liquid ammonia, obtaining purified liquid ammonia (23) at a high pressure, and reheating said purified liquid ammonia (23) after separation of said gaseous fraction, obtaining a reheated purified ammonia (24) having a temperature suitable for feeding to the urea synthesis process.
The application also deals with an ammonia-urea plant comprising an ammonia cooler, a liquid-gas separator and an ammonia re-heater and with a method for revamping existing ammonia-urea plants.

摘要翻译： 一种氨 - 尿素生产方法，其中：氨段产生的液氨直接以氨合成压力供给尿素部分，并且液氨在高压下被纯化，其步骤为：冷却液氨（20 ）获得冷却的液氨流（21），从所述冷却的液氨中分离包含氢和氮的气体馏分（22），在高压下获得纯化的液氨（23），并且在 分离所述气体馏分，得到具有适于供给尿素合成过程的温度的再加热的纯化氨（24）。 该应用还涉及包括氨冷却器，液气分离器和氨再加热器以及用于改造现有氨 - 尿素设备的方法的氨 - 尿素设备。

公开(公告)号：EP2497567A1

公开(公告)日：2012-09-12

申请号：EP11157702.9

申请日：2011-03-10

申请人： UREA CASALE S.A.

发明人： Bedetti, Gianfranco

IPC分类号： B01J2/04 ,  B01J2/16 ,  C05C9/00

CPC分类号： B01J2/16 ,  C05C9/005

摘要： A process for production of a granular urea product in a fluidized-bed where: small droplets (10) of fresh urea melt are contacted with a cooling medium to form solid particles, said solid particles (11) are contacted with droplets of urea melt (12) which are larger than said germ particles, the solid particles and said droplets forming together larger solid particles (13), and said solid particles further increasing their size step by step and upon contact with droplets of urea melt, until the solid particles reaches a given size, and said solid particles are then subject to a further growing process by contact with liquid droplets now smaller than the solid particles, until a desired size of the granular product is reached.

摘要翻译： 一种在流化床中生产颗粒状尿素产品的方法，其中将新鲜的尿素熔体的小液滴（10）与冷却介质接触以形成固体颗粒，所述固体颗粒（11）与脲熔体的液滴 12），所述固体颗粒和所述液滴形成在一起较大的固体颗粒（13），并且所述固体颗粒进一步增大尺寸并与尿素熔体的液滴接触直到固体颗粒到达 给定尺寸，然后所述固体颗粒通过与现在小于固体颗粒的液滴接触而进行进一步的生长过程，直到达到所需尺寸的颗粒状产品。

公开(公告)号：EP1863758B1

公开(公告)日：2012-06-13

申请号：EP05806779.4

申请日：2005-11-15

申请人： UREA CASALE S.A.

发明人： ROMITI, Domenico ,  STICCHI, Paolo

IPC分类号： C07C273/04 ,  B01J10/00 ,  B01J19/24

CPC分类号： C07C273/04 ,  B01J2219/00006 ,  B01J2219/00103 ,  B01J2219/00108 ,  B01J2219/182 ,  B01J2219/185 ,  Y02P20/142

摘要： A process for urea production from ammonia and carbon dioxide, made to react at a predetermined high pressure in an appropriate synthesis reactor (112), from the reaction between NH3 and C02 being obtained a reaction mixture comprising urea, ammonium carbamate and free ammonia in aqueous solution, from which a recovery of ammonium carbamate and ammonia is carried out with their subsequent recycle to the synthesis reactor (112), said recovery from the reaction mixture taking place through operative steps of decomposition of the ammonium carbamate into NH3 and CO2 and of their stripping and a subsequent operative step of their recondensation into ammonium carbamate that is recycled to the synthesis reactor, the said reaction mixture obtained from the reaction between ammonia and carbon dioxide being pumped to the operative steps of decomposition and stripping.

公开(公告)号：EP2254874B1

公开(公告)日：2011-06-01

申请号：EP09716759.7

申请日：2009-02-24

申请人： Urea Casale S.A.

发明人： SIOLI, Giancarlo

IPC分类号： C07D251/60 ,  C07D251/62 ,  B01J19/18

CPC分类号： C07D251/62 ,  B01D9/0013 ,  B01J19/006 ,  B01J19/18 ,  B01J19/1862 ,  B01J19/1881 ,  B01J2219/00083 ,  B01J2219/00768 ,  C07D251/46 ,  C07D251/52 ,  C07D251/60

摘要： The present invention concerns process for obtaining melamine at high purity characterized by comprising the steps of : - quenching a melamine melt, deprived of off-gases of the melamine synthesis and containing melamine impurities such as ammeline, ammelide and polycondensates, with an aqueous solution comprising ammonia under conditions such to substantially convert polycondensates into melamine, obtaining a melamine solution substantially free of polycondensates, recovering melamine from said melamine solution by melamine crystallisation, obtaining melamine crystals and a melamine crystallization mother liquor, - treating said crystallization melamine mother liquor under conditions such to convert at least a portion of its ammeline content into ammelide and melammine, obtaining a treated mother liquid having at least a reduced ammeline content. The invention also concerns a high-pressure non-catalytic plant for the production of high-purity melamine implementing the above process and apparatuses suitable to be used in this plant.

公开(公告)号：EP2276751A1

公开(公告)日：2011-01-26

申请号：EP09745782.4

申请日：2009-05-14

申请人： Urea Casale S.A.

发明人： SIOLI, Giancarlo

IPC分类号： C07D251/60

CPC分类号： C07D251/60 ,  B01J10/005 ,  B01J19/0013 ,  B01J19/002 ,  B01J19/006 ,  B01J19/0066 ,  B01J19/18 ,  B01J2219/0004 ,  B01J2219/00083 ,  B01J2219/00135 ,  B01J2219/00189 ,  B01J2219/00768 ,  B01J2219/182 ,  B01J2219/185 ,  B01J2219/1943

摘要： A process for high-pressure, liquid phase conversion of urea into melamine is disclosed, where molten urea is fed to a first reaction zone (S1 ) where the melamine melt is under mechanical agitation, and a heat input (Q1 ) is provided to maintain the endothermic reaction, and the liquid is then passed to a second reaction zone (S2) kept at a lower temperature and where further agitation is provided. Embodiments of plants adapted to carry out the process are also disclosed, including multiple stirred reactors in cascade and a single reactor with multiple internal compartments defining said first and second reaction zones.

公开(公告)号：EP1752447B1

公开(公告)日：2010-11-10

申请号：EP05017376.4

申请日：2005-08-10

申请人： UREA CASALE S.A.

发明人： Brunengo, Paolo

IPC分类号： C07C273/12 ,  C07D251/60

CPC分类号： C07D251/60 ,  C07C273/12

公开(公告)号：EP2237867A1

公开(公告)日：2010-10-13

申请号：EP08870047.1

申请日：2008-12-19

申请人： Urea Casale S.A.

发明人： ZARDI, Federico

IPC分类号： B01J2/16

CPC分类号： B05D1/24 ,  B01J2/16 ,  B05C19/02

摘要： A fluid bed granulation process and apparatus, wherein a suitable fluid bed of a particulate material is maintained in a granulator (1) fed by an input flow (F) comprising a growth liquid (L) and by a flow (S1) of seeds adapted to promote the granulation, and wherein a part (F2) of said input flow (F) is taken upstream the feeding of the fluid bed, and used in a seeds generator (33), to produce the seeds for the fluid bed.

摘要翻译： 流化床造粒方法和设备，其中颗粒材料的合适流化床保持在由包含生长液（L）的输入流（F）和适合的种子流（S1）供给的造粒机（1）中 以促进粒化，并且其中所述输入流（F）的一部分（F2）取自流化床的进料的上游，并用于种子发生器（33）中以产生用于流化床的种子。

公开(公告)号：EP2227318A1

公开(公告)日：2010-09-15

申请号：EP08858579.9

申请日：2008-11-26

申请人： Urea Casale S.A.

发明人： RIZZI, Enrico

IPC分类号： B01J2/02 ,  B01J2/18

CPC分类号： B01J2/04 ,  B01J2/18

摘要： A vibrating and rotating prilling bucket (15) for granulation of a fluid substance (U), said bucket (15) comprising a perforated side wall (15a) and vibrating devices (51, 52) arranged to deliver a force with constant direction (A-A). In a preferred embodiment, the vibrating unit comprise two counter-rotating vibrators delivering rotating forces which balance each other perpendicularly to said constant direction (A-A).

公开(公告)号：EP2223600A1

公开(公告)日：2010-09-01

申请号：EP09002336.7

申请日：2009-02-19

申请人： Urea Casale S.A.

发明人： Panchaud-Mirabel, Elisabeth

IPC分类号： A01N63/04 ,  A01N25/14 ,  A01P5/00

CPC分类号： A01N63/04 ,  A01N25/14 ,  A01N2300/00

摘要： In a method for preparing granules containing filamentary fungi, a filamentary fungi culture is mixed with at least one modified starch and a starchy flour, then fillers and possible nutrients are added to the obtained product, obtaining a paste that is subsequently subjected to granulation and drying.

摘要翻译： 在制备含有丝状真菌的颗粒的方法中，将丝状真菌培养物与至少一种改性淀粉和淀粉粉混合，然后向所得产物中加入填充剂和可能的营养物质，得到随后进行造粒和干燥的糊状物 。

公开(公告)号：EP1680209B1

公开(公告)日：2009-12-30

申请号：EP04764883.7

申请日：2004-09-07

申请人： UREA CASALE S.A.

发明人： BRUNENGO, Paolo

IPC分类号： B01D53/56 ,  B01D53/86 ,  B01D53/94 ,  C01C1/02

CPC分类号： B01D53/56 ,  B01D53/8625 ,  C01C1/086

摘要： A metod for the removal of nitrogen oxides contained in combustion flue gas through treatment with gaseous ammonia, in which the gaseous ammonia is generated in situ by hydrolysis reaction of an aqueous urea solution (L4) whereby the ammonia generated by the) hydrolysis (L5) is accumulated in gaseous state, under pressure, in an accumulator (A5).