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1. 发明申请

US20080041131A1 Method of Improving the Crushing Strength and Reducing the Dust Formation and the Caking Tendency of Urea, and Urea Composition 有权
标题翻译：提高破碎强度，减少尿素和尿素组合物的粉尘形成和结块倾向的方法
公开(公告)号：US20080041131A1
公开(公告)日：2008-02-21
申请号：US11631372
申请日：2005-06-02
申请人： Ruud Van Belzen , Luc Vanmarcke
发明人： Ruud Van Belzen , Luc Vanmarcke
IPC分类号： C05G3/10
CPC分类号： C07C273/14 , C05C9/005 , C05G3/0088 , C05F11/00
摘要： The invention relates to a method of improving the crushing strength and reducing the dust formation and the caking tendency of urea particles by the addition of an organic compound to the molten urea, where at least one carbohydrate and optionally a polyvinyl compound is added to the urea. The invention also relates to a composition to be used as a urea additive.
摘要翻译：本发明涉及一种通过向熔融尿素中加入有机化合物来提高抗碎强度并减少粉尘形成和结块趋势的方法，其中至少一种碳水化合物和任选的聚乙烯基化合物加入尿素。本发明还涉及用作尿素添加剂的组合物。

2. 发明申请

US20180072659A1 PROCESS FOR THE PRODUCTION OF FORMALDEHYDE 审中-公开
公开(公告)号：US20180072659A1
公开(公告)日：2018-03-15
申请号：US15552072
申请日：2015-12-18
申请人： JOHNSON MATTHEY PUBLIC LIMITED COMPANY
发明人： Ola ERLANDSSON , Andreas MAGNUSSON , John David PACH , Daniel SHELDON
IPC分类号： C07C273/14 , C01B3/02 , C01C1/04 , C01B3/38 , C01B3/48 , C01B3/52 , C01B3/56 , C07C29/151 , C07C45/29 , C07C45/38 , C07C273/10 , C10J3/82
CPC分类号： C07C273/14 , C01B3/025 , C01B3/382 , C01B3/48 , C01B3/52 , C01B3/56 , C01B2203/0233 , C01B2203/0244 , C01B2203/025 , C01B2203/0283 , C01B2203/0415 , C01B2203/042 , C01B2203/043 , C01B2203/0475 , C01B2203/061 , C01B2203/062 , C01B2203/068 , C01B2203/1241 , C01B2203/1252 , C01B2203/141 , C01B2203/142 , C01B2203/145 , C01B2203/148 , C01C1/0488 , C07C29/1518 , C07C45/29 , C07C45/38 , C07C273/04 , C07C273/10 , C10J3/82 , C10J2300/0916 , C10J2300/093 , C10J2300/0956 , C10J2300/0959 , C10J2300/0976 , C10J2300/1838 , C10J2300/1853 , Y02E50/18 , Y02P20/52 , C07C31/04 , C07C47/04
摘要： A process is described for the production of formaldehyde, comprising (a) subjecting methanol to oxidation with air in a formaldehyde production unit thereby producing a formaldehyde-containing stream; (b) separating said formaldehyde-containing stream into a formaldehyde product stream and a formaldehyde vent gas stream; wherein the vent gas stream, optionally after treatment in a vent gas treatment unit, is passed to one or more stages of: (i) synthesis gas generation, (ii) carbon dioxide removal, (iii) methanol synthesis or (iv) urea synthesis.

3. 发明申请

US20160175739A1 METHOD FOR PREPARING UREA WATER, METHOD FOR REMOVING TRIURET FROM UREA WATER AND METHOD FOR COLLECTING TRIURET FROM AQUEOUS SOLUTION 审中-公开
标题翻译：用于制备尿素水的方法，从尿素水中除去三氯乙烯的方法和从水溶液中收集三水合物的方法
公开(公告)号：US20160175739A1
公开(公告)日：2016-06-23
申请号：US14375254
申请日：2013-12-06
申请人： OPTY CO. , LTD.
发明人： Eiichi INO
IPC分类号： B01D15/36 , B01D53/92
CPC分类号： B01D15/361 , B01D53/92 , B01D2251/2067 , C07C273/14 , C07C275/00
摘要： Provided is a method of efficiently removing triuret from urea water, a method of producing urea water of high purity and a method of collecting triuret from aqueous solution. Thus, a method of producing urea water comprises a step of preparing urea water by dissolving urea water in water, a step of making the urea water cloudy in a temperature range of −5° C. or more and 17° C. or less and a step of passing the urea water in a cloudy state through an ion exchange resin. Moreover, a method of removing triuret from urea water comprises a step of precipitating the triuret by cooling the urea water including urea and triuret as impurity in a temperature range of −5° C. or more and 17° C. or less and a step of passing the urea water in the temperature range through an ion exchange resin and capturing the precipitated triuret within the ion exchange resin.
摘要翻译：提供了一种从尿素水中有效去除三脲的方法，一种制备高纯度尿素水的方法以及从水溶液中收集三脲的方法。因此，生产尿素水的方法包括通过将尿素水溶解在水中来制备尿素水的步骤，使尿素水在-5℃以上17℃以下的温度范围内变得混浊，使浑浊状态的尿素水通过离子交换树脂的步骤。此外，从尿素水中除去三脲的方法包括通过在-5℃或更高和17℃或更低的温度范围内冷却包括尿素和三联效应剂的尿素水作为杂质来沉淀三联效应的步骤，并且步骤使所述温度范围内的尿素水通过离子交换树脂，并将沉淀的三联体捕获在离子交换树脂内。

4. 发明申请

US20150210604A1 UREA PASSIVATION TECHNIQUE AND NEW PRODUCT PASSIVATED UREA, TO MAKE UREA OR UREA-BASED COMPOUND UNIVERSALLY BLENDABLE 有权
标题翻译：尿素通气技术和新产品经过尿液，以尿素或尿素为基础的化合物通用
公开(公告)号：US20150210604A1
公开(公告)日：2015-07-30
申请号：US14422937
申请日：2013-08-28
申请人： Yara International ASA
发明人： Francois Ledoux
IPC分类号： C05G3/00 , C05C1/00 , C05C9/00
CPC分类号： C05G3/0041 , C05B1/02 , C05C1/00 , C05C9/00 , C05C9/005 , C05G3/0088 , C07C273/14 , C05C5/00 , C05C5/04 , C05D5/00
摘要： The invention concerns a method of producing passivated urea or urea based compounds for fertilizer blends wherein the urea particles are treated with a mineral acid that reacts with urea and creates a grasping layer. Thereafter a solid base in powder form is added in excess to the particles to coat the acidified particle surface. The invention also concerns a fertilizer blend comprising the passivated urea or urea based compounds with one or more of AN or AN-based compound, NS products, superphosphates, and more generally with a priori most compounds that urea is susceptible to react with when in direct contact. A safe blend comprises more than 40 weight % of the passivated urea.
摘要翻译：本发明涉及一种生产用于肥料混合物的钝化的脲或脲基化合物的方法，其中用与尿素反应的无机酸处理尿素颗粒并产生抓握层。此后将粉末形式的固体碱过量加入到颗粒中以涂覆酸化的颗粒表面。本发明还涉及一种肥料混合物，其包含钝化的脲或脲基化合物与一种或多种AN或AN-基化合物，NS产物，过磷酸盐，更通常与先前的大多数化合物一起，尿素易于与直接反应联系。安全混合物包含超过40重量％的钝化尿素。

5. 发明申请

US20140326030A1 Urease Inhibitor Formulations 有权
标题翻译：尿素抑制剂配方
公开(公告)号：US20140326030A1
公开(公告)日：2014-11-06
申请号：US14357712
申请日：2012-11-13
申请人： Incitec Pivot Limited
发明人： Arpad T. Phillip , Roydon Hildebrand , Rohan Davies , Charlie Walker
IPC分类号： C05G3/08 , C09K15/28
CPC分类号： C05G3/08 , A01N57/28 , A01N57/30 , C07C273/14 , C07F9/224 , C09K15/28 , C05C9/005 , A01N2300/00
摘要： There is provided a liquid urease inhibitor formulation comprising an urease inhibitor and a primary solvent selected from the group consisting of dialkyl sulfones, polymethylene cyclic sulfones, and mixtures thereof. A method for inhibiting urease hydrolysis of urea containing fertiliser or waste using said liquid urease inhibitor formulation is also described.
摘要翻译：提供了一种液体脲酶抑制剂制剂，其包含脲酶抑制剂和选自二烷基砜，聚亚甲基环砜及其混合物的一级溶剂。还描述了使用所述液体脲酶抑制剂制剂抑制含脲肥料或废物脲酶水解的方法。

6. 发明申请

US20140284214A1 PROCESS FOR THE REMOVAL OF AMMONIA FROM AN AMMONIA-CONTAINING GAS STREAM 有权
标题翻译：从含有氨气的气流中去除氨的方法
公开(公告)号：US20140284214A1
公开(公告)日：2014-09-25
申请号：US14223897
申请日：2014-03-24
申请人： STAMICARBON B.V.
发明人： Jozef Hubert I. MEESSEN , Axel ERBEN , John KRIGSMAN , Winfried LIEBIG
IPC分类号： B01D61/42
CPC分类号： B01D61/422 , B01D53/58 , B01D53/73 , B01D61/44 , B01D61/445 , C02F1/4693 , C02F2101/16 , C02F2103/18 , C07C273/14 , Y02A50/2346
摘要： The invention is directed to a process for the removal of ammonia from an ammonia-containing gas stream by treating the ammonia in the ammonia-containing gas stream with an acid, during which treatment an aqueous stream comprising an ammonium salt, wherein the aqueous stream comprising the ammonium salt is treated with electrodialysis, whereby the acid is recovered and an aqueos stream comprising an ammonium hydroxide salt is formed.
摘要翻译：本发明涉及一种通过用酸处理含氨气体物流中的氨来从含氨气流中除去氨的方法，在此期间处理包含铵盐的水流，其中含水流包含用电渗析处理铵盐，由此回收酸，形成包含氢氧化铵盐的气流。

7. 发明授权

US5965071A Process for preparing granular urea 失效
标题翻译：颗粒状尿素的制备方法
公开(公告)号：US5965071A
公开(公告)日：1999-10-12
申请号：US913871
申请日：1997-09-05
申请人： Hidetsugu Fujii , Haruyuki Morikawa
发明人： Hidetsugu Fujii , Haruyuki Morikawa
IPC分类号： B01J2/02 , B01J2/04 , B01J2/16 , C05C9/00 , C05C9/02 , C07C273/02 , C07C273/14 , C07C275/00 , B29B9/10
CPC分类号： B01J2/16 , B01J2/04 , C05C9/005 , C07C273/02 , C07C273/14
摘要： The present invention provides a process for preparing granular urea, which solves the problem of removing moisture in a prilling tower method and the problem of concentrating diluted formaldehyde in granulation by a fluidized, spouted bed method when urea is granulated in the presence of formaldehyde. That is, the present invention provides a process for preparing granular urea from liquid drops or sprayed drops of a urea solution, wherein the urea solution is divided into two portions of a urea solution A and a urea solution B, and a urea solution prepared by mixing an aqueous formaldehyde solution with the urea solution A, concentrating the above mixed solution and then mixing it with the urea solution B is used.
摘要翻译： PCT No.PCT / JP97 / 00108 Sec。 371日期：1997年9月5日 102（e）1997年9月5日PCT 1997年1月21日PCT PCT。公开号WO97 / 28100 PCT 日期：1997年8月7日本发明提供了一种制备颗粒状尿素的方法，其解决了造粒塔法中除去水分的问题，以及当尿素成粒时，通过流化喷雾床方法将稀释的甲醛浓缩成粒状的问题存在甲醛。也就是说，本发明提供了一种从尿液溶液的液滴或喷雾液滴制备颗粒状尿素的方法，其中将尿素溶液分成尿素溶液A和尿素溶液B两部分，尿素溶液由将甲醛水溶液与尿素溶液A混合，浓缩上述混合溶液，然后与尿素溶液B混合。

8. 发明授权

US5686647A Process for the preparation of urea 失效
标题翻译：制备尿素的方法
公开(公告)号：US5686647A
公开(公告)日：1997-11-11
申请号：US529602
申请日：1995-09-18
申请人： Jan Chys
发明人： Jan Chys
IPC分类号： C07C273/04 , C07C273/14 , C07C273/16 , C07D487/18
CPC分类号： C07D487/18 , C07C273/04 , C07C273/14 , C07C273/16
摘要： Process for the preparation of urea, wherein in a first step ammonia and carbon dioxide react in suitable conditions so as to form a first mixture containing a quantity of urea, wherein in one or more subsequent steps ammonia and carbon dioxide are removed from the first mixture and the obtained urea is concentrated until a urea concentration has been reached suitable to be granulated in a gas stream, whereby apart from urea granules a second mixture containing air, gaseous ammonia and urea dust is formed which subsequently is washed, and wherein before or during the washing an amount of formaldehyde is added to the second mixture of air, ammonia and urea under circumstances wherein the ammonia can react with the formaldehyde in order to form hexamethylenetetramine (HMTA) whereupon the so formed HMTA is separated from the gas stream and is returned into the process before the granulation step.
摘要翻译：制备尿素的方法，其中在第一步骤中，氨和二氧化碳在合适的条件下反应，以形成含有一定量尿素的第一混合物，其中在一个或多个后续步骤中，从第一混合物中除去氨和二氧化碳将得到的尿素浓缩直到达到适合于在气流中造粒的尿素浓度，由此除了尿素颗粒之外，形成含有空气，气态氨和尿素粉末的第二混合物，其随后被洗涤，并且其中在之前或期间在氨与甲醛反应以形成六亚甲基四胺（HMTA）的情况下，向空气，氨和尿素的第二混合物中加入一定量的甲醛，由此形成的HMTA与气流分离并返回进入造粒步骤之前的过程。

9. 发明授权

US3802903A Solid urea having a deodorizing coating 失效
标题翻译：具有脱漆功能的固体尿素
公开(公告)号：US3802903A
公开(公告)日：1974-04-09
申请号：US29782172
申请日：1972-10-16
申请人： WILLCHEMO INC
发明人： SHONK R , WADE M , TOLLE G
IPC分类号： A23K1/00 , A23K1/22 , B01J2/00 , C07C273/14 , C05C9/00
CPC分类号： B01J2/006 , A23K40/30 , A23K50/15 , C07C273/14 , Y10S426/807
摘要： The ammonia odor of synthetic urea is eliminated by grinding together citric acid and an inert solid such as clay to yield a free-flowing powder and thoroughly mixing this powder with particulate urea to form a coating on the urea particles containing from about 0.015 to 0.20 weight percent citric acid, based on the weight of urea. The reaction of citric acid with molten urea and the poor grinding properties of citric acid are alleviated by the disclosed technique.

10. 发明授权

US3299133A Process for the improvement of the storage properties of urea 失效
标题翻译：提高尿素储存性能的方法
公开(公告)号：US3299133A
公开(公告)日：1967-01-17
申请号：US40524364
申请日：1964-10-20
申请人： LONZA AG
发明人： ERNST PETERHANS , FRIEDRICH SCHILTKNECHT
IPC分类号： C05C9/00 , C07C273/14
CPC分类号： C05C9/005 , C05C9/00 , C07C273/14

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