公开(公告)号：EP2894153B1

公开(公告)日：2017-10-04

申请号：EP13836084.7

申请日：2013-08-14

申请人： Otkrytoe Aktsionernoe Obschestvo Research & Design Institute Of Urea And Organic Synthesis Products (OAO NIIK)

发明人： NIKOLAEV, Evgeny Yuryevich ,  SKUDIN, Alexei Georgievich ,  PECHNIKOVA, Galina Nikolaevna ,  PROKOPYEV, Aleksandr Alekseevich ,  KUZNETSOV, Nikolai Mikhailovich ,  KOSTIN, Oleg Niknlaevich ,  ESIN, Igor Veniaminovich

IPC分类号： C07D251/62

CPC分类号： C07D251/62

公开(公告)号：EP3064475A1

公开(公告)日：2016-09-07

申请号：EP14858689.4

申请日：2014-10-24

申请人： Otkrytoe Aktsionernoe Obschestvo Research & Design Institute Of Urea And Organic Synthesis Products (OAO NIIK)

发明人： NIKOLAEV, Evgeny Yuryevich ,  SKUDIN, Aleksei Georgievich ,  PECHNIKOVA, Galina Nikolaevna ,  SHISHINOV, Aleksandr Vasilyevich ,  KUZNETSOV, Nikolai Mikhailovich ,  KOSTIN, Oleg Nikolaevich ,  ESIN, Igor Veniaminovich

IPC分类号： C02F1/02 ,  C02F1/58 ,  C02F101/38 ,  C02F103/36

CPC分类号： C02F1/025 ,  C02F2103/36 ,  C02F2301/08

摘要： The invention relates to processes for purifying wastewater formed during manufacturing of melamine produced from urea using techniques that involve the use of aqueous solutions of alkali metal hydroxides in order to purify and separate melamine. The invention can be used in the industrial production of melamine. The process for purifying melamine production wastewater involves two stages of wastewater thermal hydrolysis. The thermal hydrolysis of the first stage is performed at a temperature of 180-270°C to decomposition of 95.0-99.9% of triazine derivatives present in a wastewater; the water treated at the first stage at the amount of 20-80% is recycled into the process. The second stage is the final thermal hydrolysis of the other part of wastewater treated at the first stage. It is performed at a temperature of 180-270°C.
The technical result that can be achieved by invention is a high level of purification of wastewater discharged into the sewers, reduced amount of treated wastewater discharged into the sewers, reduced consumption of pure water in the process along with simplified process technology and reduced energy consumption.

公开(公告)号：EP2596859A1

公开(公告)日：2013-05-29

申请号：EP11809937.3

申请日：2011-07-15

申请人： Otkrytoe Aktsionernoe Obschestvo Research & Design Institute Of Urea And Organic Synthesis Products (OAO NIIK)

发明人： SERGEEV, Yury Andreevich ,  VOROBYEV, Aleksandr Andreevich ,  ANDERZHANOV, Rinat Venerovich ,  CHIRKOV, Aleksandr Vasilievich ,  GOLOVIN, Yury Aleksandrovich ,  SOLDATOV, Aleksei Vladimirovich ,  PROKOPYEV, Aleksandr Alekseevich ,  KUZNETSOV, Nikolai Mikhailovich ,  KOSTIN, Oleg Nikolaevich ,  ESIN, Igor Veniaminovich

IPC分类号： B01J10/00

CPC分类号： B01J10/00 ,  B01F3/0451 ,  B01F5/0062 ,  B01J4/002 ,  B01J19/246 ,  B01J2219/00768 ,  B01J2219/00777

摘要： The invention relates to design of a gas-liquid reactor with a rising unidirectional phase movement and can be used, in particular, for the industrial production of urea. Pipes for introducing reactants into the vertical entrained-flow gas-liquid reactor are connected to inlet pipes of a mixer which is located in the lower part of the body and the axial outlet pipe of which is directed either towards the bottom of the reactor or upwards, and which is equipped with a diffuser. The mixer consists either of a coaxial tube and of one or more consecutively connected coaxial vortex chambers with tangential inlet pipes, or only of two or more vortex chambers. The tangential pipes ensure an identical direction of rotation of the flows in all of the chambers. At least one of the tangential pipes is inclined in the opposite direction of the outlet opening in the axial pipe. The mixer, with the outlet pipe directed upwards, is located within a cylindrical shell which is concentric to the body of the reactor. The technical result is an increase in the intensity of dispersion of the interacting phases and in the uniformity of dispersion of the reactants in the two-phase flow formed.

摘要翻译： 本发明涉及具有上升的单向相位运动的气液反应器的设计，并且特别可用于工业生产尿素。 将反应物引入垂直夹带气体 - 液体反应器的管道连接到位于主体下部的混合器的入口管，其轴向出口管朝向反应器的底部或向上 ，并配有扩散器。 混合器由同轴管和一个或多个连续连接的具有切向入口管的同轴涡旋室或仅两个或更多个涡流室组成。 切向管确保所有腔室中的流动相同的旋转方向。 切向管中的至少一个在轴向管中的出口的相反方向倾斜。 出口管向上的混合器位于与反应器主体同心的圆柱形壳体内。 技术结果是在形成的两相流中相互作用相的分散强度和反应物的分散均匀性的增加。