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1. 发明申请

WO02057185A3 PROCESS FOR PRODUCING POTASSIUM SULFATE FROM SODIUM SULFATE 审中-公开
标题翻译：从硫酸钠生产硫酸钾的方法
公开(公告)号：WO02057185A3
公开(公告)日：2002-09-26
申请号：PCT/CA0200031
申请日：2002-01-10
申请人： AIRBORNE IND MINERALS INC , PHINNEY ROBIN
发明人： ROBIN PHINNEY
IPC分类号： B01D61/44 , C01D5/08 , C25B1/00 , C25B1/16 , C01D5/00
CPC分类号： C01D5/08 , B01D61/44 , C25B1/00 , C25B1/16
摘要： There is disclosed a process for producing a potassium sulfate electrochemically. The process involves the use of sodium sulfate which is electrolyzed in an electrolytic cell (1) and which results in the production of sodium hydroxide and ammonium sulfate. The process carried out in a two or three-compartment electrolytic cell (1) and the ammonium sulfate is converted by ammoniation (20) and treatment of the ammoniated mixture with potassium chloride (22) to produce potassium sulfate. Potassium sulfate may then also undergo electrochemical treatment to produce potassium hydroxide and ammonium sulfate.
摘要翻译：公开了电化学生产硫酸钾的方法。该方法包括使用在电解池（1）中电解的硫酸钠，并导致生产氢氧化钠和硫酸铵。在二室或三室电解池（1）中进行的方法和硫酸铵通过氨化（20）转化并用氯化钾（22）处理氨化混合物以产生硫酸钾。然后可以将硫酸钾也进行电化学处理以产生氢氧化钾和硫酸铵。

2. 发明申请

WO02057185A2 PROCESS FOR PRODUCING POTASSIUM HYDROXIDE AND POTASSIUM SULFATE FROM SODIUM SULFATE 审中-公开
标题翻译：从硫酸钠生产氢氧化钾和硫酸钾的方法
公开(公告)号：WO02057185A2
公开(公告)日：2002-07-25
申请号：PCT/CA2002/000031
申请日：2002-01-10
IPC分类号： B01D61/44 , C01D5/08 , C25B1/00 , C25B1/16 , C01D5/00
CPC分类号： C01D5/08 , B01D61/44 , C25B1/00 , C25B1/16
摘要： There is disclosed a process for producing a potassium sulfate electrochemically. The process involves the use of sodium sulfate which is electrolyzed in an electrolytic cell and which results in the production of sodium hydroxide and ammonium sulfate. The process carried out in a two or three-compartment electrolytic cell and the ammonium sulfate is converted by ammoniation and treatment of the ammoniated mixture with potassium chloride to produce potassium sulfate. Potassium sulfate may then also undergo electrochemical treatment to produce potassium hydroxide and ammonium sulfate.
摘要翻译：公开了电化学生产硫酸钾的方法。该方法涉及使用在电解池中电解的硫酸钠，其产生氢氧化钠和硫酸铵。在两室或三室电解池中进行的方法和硫酸铵通过氨化转化并用氯化钾处理氨化混合物以产生硫酸钾。然后可以将硫酸钾也进行电化学处理以产生氢氧化钾和硫酸铵。

3. 发明申请

WO99065823A1 METHOD OF PROCUCING POTASSIUM SULFATE 审中-公开
标题翻译：硫酸钾的制备方法
公开(公告)号：WO99065823A1
公开(公告)日：1999-12-23
申请号：PCT/CA1999/000564
申请日：1999-06-15
IPC分类号： C01C1/02 , C01D5/08 , C01F11/18 , C01F11/46
CPC分类号： C01F11/18 , C01C1/028 , C01D5/08
摘要： A process for the production of potassium sulfate using ammonium sulfate and potassium chloride by precipitation in the absence of evaporation. The process comprises several precipitation and solid/liquid separation steps. In the first reaction steps a double salt is formed, which is converted in further steps to potassium sulfate.
摘要翻译：一种使用硫酸铵和氯化钾在不蒸发的情况下通过沉淀生产硫酸钾的方法。该方法包括几个沉淀和固/液分离步骤。在第一反应步骤中，形成双盐，其进一步转化成硫酸钾。

4. 发明申请

WO2017074347A1 PROCESS AND SYSTEM FOR REMOVING SULFUR DIOXIDE FROM FLUE GAS 审中-公开
标题翻译：从烟气中去除二氧化硫的方法和系统
公开(公告)号：WO2017074347A1
公开(公告)日：2017-05-04
申请号：PCT/US2015/057796
申请日：2015-10-28
申请人： MARSULEX ENVIRONMENTAL TECHNOLOGIES, CORP
发明人： GAL, Eli
IPC分类号： B01D53/14 , B01D53/50
CPC分类号： B01D53/502 , B01D53/73 , B01D53/78 , B01D2251/108 , B01D2251/206 , B01D2258/0283 , C01D5/08
摘要： Processes and systems (10,110) for producing potassium sulfate (36) as a byproduct of a desulfurization process. Sulfur dioxide is absorbed (12) from a flue gas (14) using an ammonia-containing solution to produce an ammonium sulfate solution (24) that contains dissolved ammonium sulfate. At least a first portion (25) of the ammonium sulfate solution (24) is heated (26) before dissolving potassium chloride (22) therein to form a slurry (28) that contains potassium sulfate crystals (36) and an ammonium chloride solution. The slurry (28) is then cooled (32) to precipitate additional potassium sulfate crystals (36), after which the potassium sulfate crystals (36) are removed (34) to yield a residual ammonium chloride solution (38,48) that contains dissolved ammonium chloride and residual dissolved potassium sulfate. Ammonia (50) is then absorbed (40) into the residual ammonium chloride solution (38) to further precipitate potassium sulfate crystals (42), which are removed (44) to yield a residual ammonium chloride solution (46) that is substantially free of dissolved potassium sulfate.
摘要翻译：用于生产硫酸钾（36）作为脱硫工艺的副产物的方法和系统（10,110）。使用含氨溶液从烟道气（14）吸收二氧化硫（12）以产生含有溶解的硫酸铵的硫酸铵溶液（24）。在将氯化钾（22）溶解于其中之前，将硫酸铵溶液（24）的至少第一部分（25）加热（26）以形成含有硫酸钾晶体（36）和氯化铵溶液的浆液（28）。然后将浆液（28）冷却（32）以沉淀另外的硫酸钾晶体（36），然后除去硫酸钾晶体（36）（34）以产生残余的氯化铵溶液（38,48）氯化铵和残留溶解的硫酸钾。然后将氨（50）吸收（40）到残留的氯化铵溶液（38）中以进一步沉淀硫酸钾晶体（42），将其除去（44）以产生基本上不含溶解的硫酸钾。

5. 发明申请

WO00021887A1 METHOD OF FORMULATING ALKALI METAL SALTS 审中-公开
标题翻译：制备碱金属盐的方法
公开(公告)号：WO00021887A1
公开(公告)日：2000-04-20
申请号：PCT/CA1999/000905
申请日：1999-09-30
IPC分类号： C01D5/00 , C01D5/08 , C01D7/02 , C05D1/02 , C05D7/00
CPC分类号： C01D7/02 , C01D5/00 , C01D5/08 , C05D1/02 , C05D7/00
摘要： Methodology for formulating sodium bicarbonate and potassium sulfate. In one embodiment, sodium sulfate and ammonium bicarbonate are reacted to form sodium bicarbonate with the remaining liquor or brine treated with sulfuric acid to remove carbonates with subsequent precipitation of potassium sulfate. A further embodiment employs ammonium bicarbonate, ammonia gas or carbon dioxide to precipitate sodium bicarbonate. The result of the methods is the production of high quality fertilizer and food grade sodium bicarbonate.
摘要翻译：配制碳酸氢钠和硫酸钾的方法。在一个实施方案中，使硫酸钠和碳酸氢铵反应形成碳酸氢钠，剩余的液体或盐水用硫酸处理以除去碳酸盐，随后硫酸钾沉淀。另一个实施方案使用碳酸氢铵，氨气或二氧化碳来沉淀碳酸氢钠。方法的结果是生产优质肥料和食品级碳酸氢钠。

6. 发明申请

WO00015554A1 PROCESS FOR PRODUCING POTASSIUM SULFATE FROM POTASH AND SODIUM SULFATE 审中-公开
标题翻译：从硫酸钠和硫酸钠生产硫酸钾的方法
公开(公告)号：WO00015554A1
公开(公告)日：2000-03-23
申请号：PCT/US1999/019401
申请日：1999-08-26
IPC分类号： C01D5/06 , C01D5/00 , C01D5/08
CPC分类号： C05D1/00 , C01D5/00 , C01D5/08
摘要： The present invention provides a process for producing potassium sulfate from a potash and a sodium sulfate source, comprising the steps of: (a) treating a portion of the potash source and sodium sulfate source, such that glaserite is crystallized out of solution and a first mother liquor is produced; (b) converting the glaserite to precipitate potassium sulfate in a second mother liquor; (c) recycling the second mother liquor to the portion of the potash source and sodium sulfate source; (d) subjecting the first mother liquor to evaporative crystallization to produce sodium chloride in a third mother liquor; and (e) recycling the third mother liquor to the portion of the potash source and sodium sulfate source.
摘要翻译：本发明提供了一种从钾盐和硫酸钠源生产硫酸钾的方法，包括以下步骤：（a）处理一部分钾源和硫酸钠源，使得硅酸盐从溶液中结晶出来，生产母液; （b）在第二母液中转变闪锌矿以沉淀硫酸钾; （c）将第二母液再循环至钾源和硫酸钠源的一部分; （d）使第一母液在第三母液中进行蒸发结晶以产生氯化钠; 和（e）将第三母液再循环至钾源和硫酸钠源的部分。

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