公开(公告)号：EP1725113B1

公开(公告)日：2009-12-30

申请号：EP05707267.0

申请日：2005-02-08

申请人： UREA CASALE S.A.

发明人： PANCHAUD-MIRABEL, Elisabeth

IPC分类号： A01N63/04 ,  C12R1/645

CPC分类号： C12N1/04 ,  A01N63/04 ,  C12N11/02 ,  C12N11/04 ,  A01N25/12 ,  A01N2300/00

摘要： A process for the production of granules or pellets containing filamentous fungi is described comprising the steps of selecting and growing filamentous fungi in a suitable culture medium for a predetermined amount of time, adding a gelling agent and at least one carrier to said culture medium, so as to obtain a mixture, subjecting said mixture to gelling through contact, drop by drop, with a solution containing a calcium salt thus obtaining gelled pellets or granules containing said filamentous fungi and drying said gelled pellets or granules to a moisture content of 13-18%.

公开(公告)号：EP2128129A1

公开(公告)日：2009-12-02

申请号：EP08009267.9

申请日：2008-05-20

申请人： Urea Casale S.A.

发明人： Zardi, Federico ,  Scotto, Andrea

IPC分类号： C07C273/04

CPC分类号： C07C273/04 ,  B01J2219/00024

摘要： A method for revamping a conventional self-stripping urea plant (1) is disclosed, where a minor portion (18a) of the carbon dioxide feed is fed to the stripper (7) and used as a stripping agent. In further embodiments, another carbamate condenser is installed, or the conventional horizontal shell-and-tube carbamate condenser (6) is replaced with a vertical submerged unit.

摘要翻译： 公开了一种用于改进常规自剥式尿素装置（1）的方法，其中将二氧化碳进料的少部分（18a）进料到汽提器（7）并用作汽提剂。 在另外的实施方案中，安装了另一种氨基甲酸酯冷凝器，或者将常规的水平管壳氨基甲酸酯冷凝器（6）替换为垂直浸没的单元。

公开(公告)号：EP2008709A1

公开(公告)日：2008-12-31

申请号：EP07012561.2

申请日：2007-06-27

申请人： UREA CASALE S.A.

发明人： Rizzi, Enrico

IPC分类号： B01J2/04 ,  B01J2/18 ,  B05B3/10 ,  B05B17/06

CPC分类号： B01J2/04 ,  B01J2/18 ,  B05B3/001 ,  B05B3/1021

摘要： A granulation process wherein a liquid is sprayed into a prilling tower (1) by means of a rotating prilling bucket (15) having a perforated side wall (15a), and the liquid jets exiting said perforated side wall are subjected to a vibrating action according to the axial direction (A-A) of the prilling tower (1), while the remaining liquid mass inside the bucket is kept substantially free from said vibrating action. A suitable apparatus is also disclosed, wherein the peripheral side wall (15a) of the prilling bucket (15) is.connected to vibration imparting means and has a flexible connection with the frame (15b, 15c) of the bucket.

摘要翻译： 一种造粒方法，其中通过具有穿孔侧壁（15a）的旋转造粒桶（15）将液体喷射到造粒塔（1）中，并且离开所述穿孔侧壁的液体射流受到振动作用，根据 与造粒塔（1）的轴向（AA）相关联，而桶内的剩余液体质量基本上不受所述振动作用。 还公开了一种合适的装置，其中造粒桶（15）的周边侧壁（15a）连接到振动赋予装置上，并且与桶的框架（15b，15c）具有柔性连接。

公开(公告)号：EP1740298B1

公开(公告)日：2008-11-19

申请号：EP05715517.8

申请日：2005-02-24

申请人： UREA CASALE S.A.

发明人： BEDETTI, Gianfranco

IPC分类号： B01J2/16 ,  B01J8/44

CPC分类号： B05C19/02 ,  B01J2/16 ,  B05C19/06

摘要： A fluid bed granulation process of a predetermined substance comprises the steps of: forming, through a fluidification. air flow of predetermined flow rate, a fluid bed of granules of said substance to be granulated fed to it in the form of seeds, - feeding said fluid bed with a continuous flow of a growth substance (or liquid).

公开(公告)号：EP1975152A1

公开(公告)日：2008-10-01

申请号：EP08005391.1

申请日：2008-03-21

申请人： UREA CASALE S.A.

发明人： Zardi, Federico

IPC分类号： C07C273/04 ,  B01J19/00

CPC分类号： C07C273/04 ,  B01J2219/00006 ,  Y02P20/142 ,  Y02P20/582

摘要： A method for the modernisation of a plant for urea production comprising a reactor (2) for urea synthesis, a stripping unit (3) with carbon dioxide and at least one vertical condensation unit (4) of the film type, includes the step of providing in the condensation unit (4) means for subjecting to substantially total condensation a portion of a flow comprising ammonia and carbon dioxide in vapour phase leaving said stripping unit (3), and is characterized in that it further comprises the steps of providing a second stripping unit (47), means (9) for feeding a first portion of the flow of reaction mixture comprising urea, carbamate and free ammonia in aqueous solution leaving the reactor (2) to said stripping unit (3), means (48) for feeding a second portion of the flow of reaction mixture comprising urea, carbamate and free ammonia in aqueous solution leaving the reactor (2) to said second stripping unit (47) and means (49) for feeding at least a portion of a flow comprising ammonia and carbon dioxide in vapour phase leaving said second stripping unit (47) directly to the reactor synthesis (2).

摘要翻译： 一种用于尿素生产装置的现代化的方法，该装置包括用于尿素合成的反应器（2），具有二氧化碳的汽提单元（3）和至少一个膜类型的竖直冷凝单元（4），所述方法包括提供 在所述冷凝单元（4）中用于使包含氨和二氧化碳气体的一部分流离开所述汽提单元（3）的基本全部冷凝的装置，并且其特征在于其还包括以下步骤：提供第二汽提 用于将包含尿素，氨基甲酸盐和游离氨的反应混合物的第一部分流出反应器（2）的水溶液送入所述汽提单元（3）的装置（9），用于进料的装置（48） 将含有尿素，氨基甲酸盐和游离氨在水溶液中的反应混合物流的第二部分离开反应器（2）至所述第二汽提单元（47），以及用于将至少一部分含氨的流和 气相二氧化碳直接离开所述第二汽提单元（47）到反应器合成（2）。

公开(公告)号：EP1935482A1

公开(公告)日：2008-06-25

申请号：EP06026755.6

申请日：2006-12-22

申请人： UREA CASALE S.A.

发明人： Bedetti, Gianfranco

IPC分类号： B01J2/16

CPC分类号： B01J2/16

摘要： Fluid bed granulation process comprising the steps of:
- forming a fluid bed of seeds (S1) of a chosen substance,
- feeding said fluid bed with a continuous fluid flow (L) comprising a growth liquid,
- inducing and maintaining a continuous vortex (V) in said fluid bed, the vortex (V) having a substantially horizontal axis,

characterized in that said fluid flow (L) is fed into predetermined first zones (Z1) of said fluid bed, said first zones (Z1) being alternated to second zones (Z2) of said fluid bed in which said fluid flow (L) is not fed.

摘要翻译： 流化床造粒方法包括以下步骤： - 形成选定物质的种子（S1）的流化床， - 向所述流化床供给包含生长液体的连续流体流（L），诱导和保持连续的涡流（ V）在所述流化床中，所述涡流（V）具有基本上水平的轴线，其特征在于，所述流体流（L）被供​​给到所述流化床的预定的第一区域（Z1）中，所述第一区域（Z1）交替 所述流化床的第二区（Z2），其中未供给所述流体流（L）。

公开(公告)号：EP1594820B1

公开(公告)日：2007-10-31

申请号：EP04702327.0

申请日：2004-01-15

申请人： UREA CASALE S.A.

发明人： ZARDI, Federico

IPC分类号： C07C1/00

CPC分类号： C07C273/04

摘要： A process for urea production comprises the steps of: - performing a reaction between ammonia and carbon dioxide in a reaction space to obtain a reaction mixture comprising urea, carbamate and free ammonia in aqueous solution, -subjecting said mixture to a stripping treatment with carbon dioxide feed as a stripping agent to obtain a first flow comprising ammonia and carbon dioxide in vapor phase and a flow comprising urea and residual carbamate in aqueous solution, - feeding said flow comprising urea and residual carbamate in aqueoue solution to a urea recovery section, - separating in said recovery section said residual carbamate from the urea to obtain a first flow of carbamate in aqueous solution.

公开(公告)号：EP1752447A1

公开(公告)日：2007-02-14

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

摘要： A process for the integrated production of urea and melamine synthesized from at least part of said urea, comprising the steps of:
- carrying out a urea synthesis in a first urea synthesis reactor (16), fed with ammonia and carbon dioxide, obtaining a reaction mixture comprising urea and ammonium carbamate,
- carrying out melamine synthesis, with formation of off-gas comprising ammonia and carbon dioxide,
- carrying out a further urea synthesis in a second urea synthesis reactor (28), fed with said off-gas, with production of a respective reaction mixture comprising urea and ammonium carbamate,
- feeding said reaction mixture produced by said first reactor (16) and said reaction mixture produced by said second reactor (28) to a urea recovery unit (18), obtaining urea and an ammonium carbamate aqueous solution,
- feeding said ammonium carbamate aqueous solution obtained in said recovery unit (18) to said second urea synthesis reactor (28).

摘要翻译： 一种用于从至少部分所述尿素合成的尿素和三聚氰胺的综合生产方法，包括以下步骤： - 在第一尿素合成反应器（16）中进行尿素合成，供给氨和二氧化碳，获得反应 混合物，其包含尿素和氨基甲酸铵， - 进行三聚氰胺合成，形成包含氨和二氧化碳的废气， - 在供给所述废气的第二尿素合成反应器（28）中进一步进行尿素合成， 生产包含尿素和氨基甲酸铵的各自的反应混合物，将由所述第一反应器（16）产生的所述反应混合物和由所述第二反应器（28）产生的所述反应混合物输送到尿素回收单元（18），得到尿素和 氨基甲酸铵水溶液， - 将在所述回收单元（18）中获得的所述氨基甲酸铵水溶液进料到所述第二尿素合成反应器（28）。

公开(公告)号：EP1719755A1

公开(公告)日：2006-11-08

申请号：EP05009761.7

申请日：2005-05-04

申请人： UREA CASALE S.A.

发明人： Zardi, Federico ,  Sticchi, Paolo ,  Brunengo, Paolo

IPC分类号： C07C273/04

CPC分类号： C07C273/04

摘要： A process for urea production from ammonia and carbon dioxide, in which part of the aqueous solution comprising urea, ammonium carbamate and ammonia obtained in a urea synthesis section is subjected to dissociation in a treatment section operating at a predetermined medium pressure for the recovery of the ammonium carbamate and of the ammonia contained in it, comprises the step of subjecting the urea aqueous solution resulting from the aforementioned dissociation step to decomposition in a low pressure urea recovery section.

摘要翻译： 一种由氨和二氧化碳生产尿素的方法，其中在尿素合成段中获得的包含尿素，氨基甲酸铵和氨的水溶液的一部分在预定介质压力下操作的处理段中解离，以回收 氨基甲酸铵和其中所含的氨的方法包括在上述解离步骤中得到的尿素水溶液在低压尿素回收段中分解的步骤。

公开(公告)号：EP1714959A1

公开(公告)日：2006-10-25

申请号：EP05008437.5

申请日：2005-04-19

申请人： UREA CASALE S.A.

发明人： Porro, Lino ,  Gueli, Pasquale

IPC分类号： C07C273/00

CPC分类号： C07C273/04 ,  B01J2219/00006 ,  B01J2219/00108 ,  B01J2219/0011

摘要： In a process for urea production of the type comprising the reaction between ammonia and carbon dioxide in a highpressure reactor followed by an autothermal stripping of the resulting reaction mixture so as to obtain a gaseous flow comprising ammonia and carbon dioxide and a liquid flow comprising urea and residual carbamate in aqueous solution and by a stripping of said gaseous flow in units operating at medium pressure, a gaseous flow coming from said units operating at medium pressure and comprising ammonia and carbon dioxide is partially condensed in a condenser to give a mixed liquid/gaseous flow. The uncondensed gases comprising ammonia and carbon dioxide are separated from the liquid phase in a separator and subjected to washing in a packed portion of a column in countercurrent with a flow of a carbonate solution obtaining a gaseous flow essentially consisting of ammonia and a liquid flow comprising a carbamate solution in which the carbon dioxide contained in said uncondensed gases has been absorbed.
This process allows an effective recovery of ammonia without carbon dioxide for the recycling to the synthesis reactor.

摘要翻译： 在包括氨和二氧化碳在高压反应器中的反应的类型的尿素生产过程中，随后对所得反应混合物进行自热汽提，以获得包含氨和二氧化碳的气流以及包含尿素和 在水溶液中残留的氨基甲酸酯和在中等压力下运行的单元汽提气态气体，来自在中压下运行并包含氨和二氧化碳的所述单元的气流在冷凝器中部分冷凝，得到混合的液体/气体 流。 包含氨和二氧化碳的未冷凝的气体在分离器中与液相分离，并在与碳酸盐溶液流逆流的情况下在柱的填充部分中进行洗涤，得到基本上由氨组成的气流和包含 其中所述未冷凝气体中所含的二氧化碳已经被吸收的氨基甲酸酯溶液。 该方法允许有效地回收没有二氧化碳的氨以便再循环到合成反应器中。