UREA FINISHING METHOD
    11.
    发明申请
    UREA FINISHING METHOD 审中-公开
    UREA整理方法

    公开(公告)号:WO2013055219A1

    公开(公告)日:2013-04-18

    申请号:PCT/NL2012/050715

    申请日:2012-10-12

    Abstract: Disclosed is a method for urea finishing. A urea solution is subjected to crystallization and, other than in conventional processes, the urea crystals are shaped by exerting mechanical force onto them. Thus, the conventional prilling or granulation finishing steps can be avoided, and so are the corresponding emissions of ammonia and/or dust. The crystallization comprises a flash crystallization. The invention also pertains to the urea particles obtainable by the process, to a urea plant, and to a method of modifying an existing urea plant.

    Abstract translation: 公开了一种尿素整理方法。 尿素溶液进行结晶,除了常规方法之外,尿素晶体通过对其施加机械力而成形。 因此,可以避免常规的造粒或造粒整理步骤,氨和/或粉尘的相应排放也是如此。 结晶包括闪晶结晶。 本发明还涉及通过该方法获得的尿素颗粒,尿素装置以及改进现有尿素装置的方法。

    ZERO EMISSION UREA PROCESS AND PLANT
    13.
    发明申请
    ZERO EMISSION UREA PROCESS AND PLANT 审中-公开
    零排放尿素工艺和工厂

    公开(公告)号:WO2012134288A1

    公开(公告)日:2012-10-04

    申请号:PCT/NL2012/050207

    申请日:2012-03-30

    CPC classification number: C07C273/04 B01J19/24

    Abstract: Disclosed is a method for the production of urea allowing a substantial reduction, even down to zero, of the continuous emission of ammonia conventionally resulting from such a process. According to a preferred embodiment of the invention, the urea-forming reaction from carbon dioxide and ammonia is conducted in a synthesis section that does not require passivation by oxygen. As a result of the absence of oxygen, a hydrogen-rich gas stream results from the synthesis section, that can be used as a fuel in an incinerator. In the incinerator, ammonia-comprising gas streams from the urea production process are combusted.

    Abstract translation: 公开了用于生产尿素的方法,其允许通常由这种方法产生的氨的连续排放的显着降低甚至降低至零。 根据本发明的优选实施方案,来自二氧化碳和氨的脲形成反应在不需要氧钝化的合成部分中进行。 由于不存在氧气,可以从合成部分产生富氢气流,其可以在焚烧炉中用作燃料。 在焚烧炉中,来自尿素生产过程的含氨气流被燃烧。

    A UREA STRIPPING PROCESS FOR THE PRODUCTION OF UREA
    14.
    发明申请
    A UREA STRIPPING PROCESS FOR THE PRODUCTION OF UREA 审中-公开
    用于生产尿素的尿素剥离方法

    公开(公告)号:WO2011084060A1

    公开(公告)日:2011-07-14

    申请号:PCT/NL2011/050012

    申请日:2011-01-07

    CPC classification number: C07C273/04

    Abstract: The invention relates to a process for producing urea wherein an aqueous urea solution, leaving a urea reaction zone is fed to a stripper, where a part of the non-converted ammonia and carbon dioxide is separated from the aqueous urea solution, which solution leaves the stripper to a first recovery section of one or more serial recovery sections and is subsequently fed to one or more urea concentration sections, wherein the urea solution leaving the stripper is subjected to an adiabatic expansion, thus creating a vapor and a liquid, which are separated before the liquid enters a first recovery section and the vapor is condensed. The invention further relates to a urea plant comprising a stripper and a first recovery section, wherein an adiabatic expansion valve and a liquid/gas separator is provided between the stripper and the first recovery section.

    Abstract translation: 本发明涉及生产尿素的方法,其中留下尿素反应区的尿素水溶液被供给到汽提器,其中一部分未转化的氨和二氧化碳与尿素水溶液分离,该溶液离开 汽提器连接到一个或多个连续回收部分的第一回收部分,并且随后被供给到一个或多个尿素浓缩部分,其中离开汽提器的尿素溶液经受绝热膨胀,从而产生蒸气和液体,其被分离 在液体进入第一回收部分并且蒸气冷凝之前。 本发明还涉及一种包括汽提器和第一回收部分的尿素设备,其中绝热膨胀阀和液/气分离器设置在汽提器和第一回收部分之间。

    PROCESS FOR THE MANUFACTURE OF A TUBULAR COMPOSITE PART
    15.
    发明申请
    PROCESS FOR THE MANUFACTURE OF A TUBULAR COMPOSITE PART 审中-公开
    管状复合材料制造工艺

    公开(公告)号:WO1991005653A1

    公开(公告)日:1991-05-02

    申请号:PCT/NL1990000156

    申请日:1990-10-17

    Inventor: STAMICARBON B.V.

    CPC classification number: B29C70/222 B29C43/12 B29C70/342 B29C70/446

    Abstract: The invention relates to a process for the manufacture of a tubular composite part whose longitudinal axis exhibits a curve and/or whose wall exhibits a variable cross section relative to the longitudinal axis in which process, a tubular semi-finished product, comprising an uncured or a partially cured resin and fibre reinforcement and further comprising an inflatable former, is introduced into a mould, a medium is brought into the inflatable former under pressure, the resin being cured and the composite part thus obtained being removed, characterized in that the fibre reinforcement comprises at least a knitted or braided sleeve. Composite parts according to the invention can be used in numerous applications where complex structural parts are required that combine high pressure-resistance, flexural, torsional and tensile strength. Such an application is sometimes referred to as a space frame. Examples are the supporting parts in a car body or in a boat or aircraft, in construction, rucksack frames, bicycle frames, lampposts and sports equipment, such as bobsleighs, etc.

    Abstract translation: 本发明涉及一种用于制造管状复合材料部件的方法,其纵向轴线表现出曲线和/或其壁呈相对于纵向轴线变化的横截面,在该方法中,管状半成品包括未固化或 将部分固化的树脂和纤维增强材料进一步包括可充气成形剂引入模具中,将介质在压力下进入可充气成形器中,将树脂固化并除去由此获得的复合部件,其特征在于,纤维增强 至少包括针织或编织套筒。 根据本发明的复合部件可以用于需要复合结构部件的多种应用中,其结合了高耐压性,弯曲性,扭转强度和拉伸强度。 这种应用有时被称为空间帧。 例如车体或船上或飞机上的支撑部件,建筑物,背包框架,自行车车架,路灯柱和运动器材,如雪橇杆等。

    POLYAMIDE RESIN COMPOSITION
    16.
    发明申请
    POLYAMIDE RESIN COMPOSITION 审中-公开
    聚酰胺树脂组合物

    公开(公告)号:WO1986003213A1

    公开(公告)日:1986-06-05

    申请号:PCT/NL1985000047

    申请日:1985-11-20

    Inventor: STAMICARBON B.V.

    CPC classification number: C08L77/00 C08K5/54 C08L81/00 C08L83/00

    Abstract: Polytetramethylene adipamide resin compositions containing 100 parts by weight of the polyamide and 2 to 20 parts by weight of a silicon oil. Objects produced from the composition possess good surface appearance, excellent sliding properties and high heat resistance and rigidity.

    Abstract translation: 含有100重量份聚酰胺和2〜20重量份硅油的聚四亚甲基己二酰胺树脂组合物。 由组合物制成的物体具有良好的表面外观,优异的滑动性能和高耐热性和刚性。

    PROCESS FOR THE SPRAYING OF A LIQUID
    17.
    发明申请
    PROCESS FOR THE SPRAYING OF A LIQUID 审中-公开
    液体喷雾的方法

    公开(公告)号:WO1981002855A1

    公开(公告)日:1981-10-15

    申请号:PCT/NL1981000007

    申请日:1981-03-27

    Inventor: STAMICARBON BV

    CPC classification number: B01J8/1827 B05B7/066 C07D251/56

    Abstract: Process for the spraying of a liquid by means of a gas into a fluidized bed, in which process said spraying is conducted by means of a two-phase spraying device, consisting of a liquid feed tube (21) fitted concentrically in a gas feed tube (26), in which device the end face of the liquid feed tube and the inner wall of the part of the gas feed tube extending beyond this end face are chamfered at an angle of 70-90 so that between this face and this wall there is a conical channel, and this inner wall connects, via a rounded area, to the inner wall of an outflow channel fitted coaxially in respect of the liquid feed tube, of which channel the inside diameter is 1 to 1.6 times the inside diameter of the outflow opening of the liquid feed tube and 2.5 to 10 times the curvature radius of the rounded area. To prevent erosion due to fluctuations in the process or to small changes in the design of the sprayer the invention is characterized in that the outflow channel (31), seen into the direction of flow, is conically narrowed.

    THERMAL STRIPPING UREA PLANT AND PROCESS
    18.
    发明申请

    公开(公告)号:WO2021261999A1

    公开(公告)日:2021-12-30

    申请号:PCT/NL2021/050395

    申请日:2021-06-23

    Abstract: The disclosure pertains to an urea production plant and process using a thermal stripper, wherein the reaction mixture is separated in two parts, wherein the first part is supplied at least in part to the thermal stripper and the second part at least in part bypasses the thermal stripper and is supplied to a medium pressure recovery section.

    GRANULATION OF UREA PRODUCTS
    20.
    发明申请
    GRANULATION OF UREA PRODUCTS 审中-公开
    乌拉圭产品的形成

    公开(公告)号:WO2017007315A1

    公开(公告)日:2017-01-12

    申请号:PCT/NL2016/050486

    申请日:2016-07-06

    CPC classification number: C05G3/0058 B01J2/16 C05C3/005 C05C9/005

    Abstract: Disclosed is a method of making a granulate of a urea product comprising urea and a salt, such as urea ammonium sulfate, having a high content of the salt. The high content is such as to provide an amount of the salt above the limit of solubility of the salt in urea. The granulate of the invention is characterized by having a smooth surface, which, e.g. in the event of urea ammonium sulfate, is not normally the case for granulate having the aforementioned high ammonium sulfate content. According to the invention this is realized by dividing the feed liquids to granulation. This division is based on non-final granulation liquids of a sufficiently high content of the salt, and a final granulation liquid (determining the surface) having a salt content of below the solubility limit of the salt, or no salt at all. E.g. in the event of urea ammonium sulfate, the non-final granulation liquids possibly are a slurry of urea and more than 20 wt.% of ammonium sulfate. The final granulation liquid then has 0-20 wt.% of ammonium sulfate, i.e. below the solubility limit.

    Abstract translation: 公开了一种制备包含尿素和盐的颗粒的方法,所述盐和盐具有高含量的盐,例如硫酸铵。 高含量是提供一定量的盐高于盐在尿素中的溶解度的极限。 本发明的颗粒的特征在于具有光滑的表面, 在尿素硫酸铵的情况下,对于具有上述高硫酸铵含量的颗粒通常不是这种情况。 根据本发明,这是通过将进料液分成造粒来实现的。 该分配基于具有足够高的盐含量的非最终造粒液体,以及盐含量低于盐的溶解度极限的最终造粒液(确定表面),或根本没有盐。 例如。 在尿素硫酸铵的情况下,非最终造粒液体可能是尿素的浆液和大于20重量%的硫酸铵。 最终造粒液体的硫酸铵含量为0-20%,即低于溶解度极限。

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