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1. 发明申请

WO2017116773A1 SULFUR DIOXIDE SCRUBBING SYSTEM AND PROCESS FOR PRODUCING POTASSIUM PRODUCTS 审中-公开
标题翻译：二氧化硫洗涤系统和生产钾肥产品的方法
公开(公告)号：WO2017116773A1
公开(公告)日：2017-07-06
申请号：PCT/US2016/067313
申请日：2016-12-16
申请人： TESSENDERLO KERLEY, INC.
发明人： HOJJATIE, Michael Massoud , LOCKHART, Constance Lynn Frank , DIMITRIADIS, Alexandros , CLARKSON, Mark P. , KOMINSKI, Harry Charles , VAN CAUWENBERGH, Jeroen , SHULT, Nicholas S. , GOLDSMITH, Adam T.
IPC分类号： C23F1/14 , C01B15/08 , H05K3/38 , C09G1/00
CPC分类号： C01B17/64 , B01D53/1481 , B01D53/502 , B01D2251/306 , B01D2251/60 , B01D2252/10 , B01D2257/2045 , B01D2257/302 , B01D2257/80 , B01D2258/02 , B01D2258/0283 , C01B17/62 , Y02A50/2349
摘要： The invention relates to a process for preparing potassium thiosulfate, potassium sulfite or potassium bisulfite comprising the following steps: Step (1a): providing a potassium hydroxide or potassium carbonate solution for neutralizing acid forming components such as dissolving SO 2 or H 2 S; Step (1b): providing an SO 2 contacting solution, containing at least some potassium sulfite or potassium bisulfite or potassium thiosulfate; Step (2): providing SO 2 gas; Step (3): reacting these to absorb the SO 2 gas and to form an intermediate reaction mixture comprising potassium sulfite, or potassium bisulfite or a mixture thereof, and optionally recovering the potassium sulfite, or potassium bisulfite or a mixture thereof, and/or optionally using steps 4 and 5; Step (4): adding sulfur or sulfide containing compound containing sulfur having the oxidation state of 0, -2 or of between 0 and -2 to the reaction mixture and optionally potassium hydroxide or potassium carbonate, and reacting the mixture under suitable conditions to form potassium thiosulfate; and Step (5): recovering the potassium thiosulfate, and optionally concentrating the potassium thiosulfate.
摘要翻译：本发明涉及制备硫代硫酸钾，亚硫酸钾或亚硫酸氢钾的方法，其包括以下步骤：步骤（1a）：提供氢氧化钾或碳酸钾溶液用于中和酸形成组分，例如溶解 SO 2或H 2 S; 步骤（1b）：提供SO 2接触溶液，其包含至少一些亚硫酸钾或亚硫酸氢钾或硫代硫酸钾; 步骤（2）：提供SO 2气体; 步骤（3）：使它们反应以吸收SO 2气体并形成包含亚硫酸钾或亚硫酸氢钾或其混合物的中间反应混合物，并且任选地回收亚硫酸钾或亚硫酸氢钾或其混合物，和/或任选地使用步骤4和5; 步骤（4）：向反应混合物和任选的氢氧化钾或碳酸钾中加入硫或含硫的氧化态为0，-2或0和-2之间的硫的含化合物，并使混合物在合适的条件下反应以形成硫代硫酸钾; 和步骤（5）：回收硫代硫酸钾，并任选地浓缩硫代硫酸钾。

2. 发明申请

WO2017116775A1 OXIDATION PROCESS FOR PRODUCING POTASSIUM THIOSULFATE 审中-公开
标题翻译：生产硫代硫酸钾的氧化方法
公开(公告)号：WO2017116775A1
公开(公告)日：2017-07-06
申请号：PCT/US2016/067336
申请日：2016-12-16
申请人： TESSENDERLO KERLEY, INC.
发明人： HOJJATIE, Michael Massoud , LOCKHART, Constance Lynn Frank , DIMITRIADIS, Alexandros , CLARKSON, Mark P. , KOMINSKI, Harry Charles , VAN CAUWENBERGH, Jeroen , SHULT, Nicholas S. , GOLDSMITH, Adam T.
IPC分类号： C05C9/00
CPC分类号： C01B17/64 , C05D1/00 , C05G3/0064
摘要： An efficient process for preparation of potassium thiosulfate (K 2 S 2 O 3 ) is described. Potassium hydroxide (KOH) and elemental sulfur (S) are converted to potassium polysulfide, which is subsequently oxidized. The process allows using specifically designed process conditions such as mole ratios of potassium hydroxide to sulfur, and temperature, to obtain an optimized formulation of desired polysulfide, and a specifically designed set of conditions such as temperature, pressure, rate and duration of the oxidant during the oxidation conditions, to obtain a relatively high concentration of soluble potassium thiosulfate product with high purity, with relatively low amounts of byproducts. The manufacturing process can either be a batch process or a continuous process utilizing Continuous Stirred Tank Reactors (CSTR). The CSTR process is dependent on several design parameters, including pressure, and temperature optimization to avoid product instability. The resulting potassium thiosulfate is a beneficial fertilizer with high potassium content as a 50% liquid source of potassium.
摘要翻译：描述了制备硫代硫酸钾（K 2 S 2 O 3）的有效方法。氢氧化钾（KOH）和元素硫（S）转化为多硫化钾，随后将其氧化。该方法允许使用专门设计的工艺条件，例如氢氧化钾与硫的摩尔比和温度，以获得所需多硫化物的优化配方，以及特定设计的一组条件，例如氧化剂的温度，压力，速率和持续时间氧化条件，以获得高纯度的相对高浓度的可溶性硫代硫酸钾产品，副产物量相对较低。制造过程既可以是间歇过程，也可以是连续搅拌罐式反应器（CSTR）的连续过程。 CSTR过程依赖于几个设计参数，包括压力和温度优化以避免产品不稳定。所得到的硫代硫酸钾是一种钾含量高，钾含量为50％的有益肥料。

3. 发明申请

WO2020033576A1 STABILIZED UREA FERTILIZER COMPOSITIONS AND METHODS FOR PREPARING SAME 审中-公开
公开(公告)号：WO2020033576A1
公开(公告)日：2020-02-13
申请号：PCT/US2019/045546
申请日：2019-08-07
申请人： TESSENDERLO KERLEY, INC.
发明人： HOJJATIE, Michael Massoud , FAIRWEATHER, David Thomas , VAN CAUWENBERGH, Jeroen , TIMMERMANS, Martijn , VAN DEN RUL, Heidi
IPC分类号： C05C9/00 , C05C9/02 , C05D9/00
摘要： Provided in the invention is a stabilized fertilizer composition (I) suitable for use in fertilizers and comprising: Urea (a), One or more compounds (b), One or more urease inhibitors (c1) and/or one or more nitrification inhibitors (c2), optionally provided in one or more carriers (d), said compounds (c) being different from compounds (b), Optionally one or more additives (e) different from any of the above, and Water (f) in an amount less than about 10 wt% and preferably less than about 5 wt%; wherein compounds (b) are selected from thiosulfates (b1) and/or from polysulfides (b2) and/or from (bi)sulfites (b3); and wherein the ratio of urea (a) to compounds (b) is from 1:99 to 99:1, preferably from 2:98 to 98:2. Products of the invention can be made in various forms and in different ways. All of the materials of the invention are suitable for use in fertilizers and blend well with solid and liquid fertilizers standardly used. They have excellent shelf life and provide good urea-N protection.

4. 发明申请

WO2020033575A1 COMPOSITIONS COMPRISING SOLID THIOSULFATES, POLYSULFIDES AND/OR (BI)SULFITES WITH AN UREA COMPOUND AND METHODS FOR PREPARING SAME 审中-公开
公开(公告)号：WO2020033575A1
公开(公告)日：2020-02-13
申请号：PCT/US2019/045544
申请日：2019-08-07
申请人： TESSENDERLO KERLEY, INC.
发明人： HOJJATIE, Michael Massoud , FAIRWEATHER, David Thomas , VAN CAUWENBERGH, Jeroen , TIMMERMANS, Martijn , VAN DEN RUL, Heidi
IPC分类号： C05C9/00 , C05C9/02 , C05G3/08
摘要： Provided in the invention are thiosulfate-urea based products (IIa) and/or a polysulfide-urea based products (IIb) and/or a (bi)sulfite-urea based products (IIc) suitable for use in fertilizers and comprising: one or more urea-containing compounds (a), one or more compounds (b), optionally, one or more urease (c1) and/or nitrification (c2) inhibitors that are different from compounds (b), and/or optionally, one or more additives (d) that are different from any of the above compounds, wherein the amount of water (e) in the product (II) is less than about 10 wt%, preferably less than about 5 wt%, wherein compounds (a) are selected from urea (a1) and/or from urea-aldehyde products (a2) and/or from urea-triazone compounds (a3), wherein compounds (b) are selected from thiosulfates (b1) and/or from polysulfides (b2) and/or from (bi)sulfites (b3). An advantage of products of the invention is that only minimal amounts of degradation products of compounds (b) are formed. Products of the invention can be made in various forms and in different ways. All of the materials of the invention are suitable for use in fertilizers and blend well with solid and liquid fertilizers standardly used.

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