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1.发明申请公开(公告)号：US20190144294A1
公开(公告)日：2019-05-16
申请号：US15991388
申请日：2018-05-29
发明人： Young Jun SONG
CPC分类号： C01D15/08 , C01B25/32 , C01D5/04 , C01D7/02 , C01D7/26 , C01D7/38 , C01D15/06 , C01F11/462 , C01P2004/03 , C01P2004/61 , C01P2004/64 , C01P2006/80 , H01M10/54
摘要： Disclosed is a method of producing high-purity lithium carbonate and barium sulfate from discarded lithium secondary batteries, including: a first process for producing high-purity lithium phosphate from a discarded battery; and a second process for producing lithium sulfate from the lithium phosphate and producing lithium carbonate and barium sulfate from the lithium sulfate. The second process has steps of (a) producing a liquid mixture of lithium phosphate and sulfuric acid, (b) obtaining lithium sulfate by condensing the liquid mixture, (c) dissolving the lithium sulfate in water or a sodium hydroxide aqueous solution, depositing phosphoric acid as lithium phosphate, and performing solid-liquid separation (d) depositing lithium carbonate and performing solid-liquid separation to obtain lithium carbonate, (e) finely grinding the lithium carbonate and classifying the particles, (f) controlling a particle size and shape by dissloving edges of particles or minute particles, (g) performing solid-liquid separation, and (h) depositing barium sulfate.
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公开(公告)号：US07393378B2
公开(公告)日：2008-07-01
申请号：US10361687
申请日：2003-02-11
申请人： Joe Bichel , Stephen Schaaf
发明人： Joe Bichel , Stephen Schaaf
IPC分类号： C01D7/10
摘要： A process for recovering sodium bicarbonate and ammonium sulfate from a sodium sulfate solution. The sodium sulfate solution can be pure or contain other compounds such as sodium sulfite, carbonate, chloride, fluoride, nitrate and nitrite as would be the case if the sodium sulfate solution were derived from a sodium bicarbonate flue gas purification process. Carbon dioxide and ammonia gases or solid ammonium bicarbonate are added to the sodium sulfate solution to precipitate sodium bicarbonate which is removed from solution. The remaining solution is treated in a unique series of precipitation steps in which reactants are first recycled back to the sodium bicarbonate crystallizer and then the amount of sodium in the solution is adjusted to an amount that allows high grade ammonium sulfate fertilizer product to be produced. The process is accomplished using evaporation and precipitation unit operations in a unique sequence that results in 100% conversion of the sodium salt feed stock to sodium bicarbonate and ammonium sulfate in a commercially viable manner.
摘要翻译： 从硫酸钠溶液中回收碳酸氢钠和硫酸铵的方法。 硫酸钠溶液可以是纯的或含有其它化合物，例如亚硫酸钠，碳酸盐，氯化物，氟化物，硝酸盐和亚硝酸盐，如果硫酸钠溶液来自碳酸氢钠烟道气净化方法。 将二氧化碳和氨气或固体碳酸氢铵加入到硫酸钠溶液中以沉淀从溶液中除去的碳酸氢钠。 剩余的溶液以独特的一系列沉淀步骤处理，其中将反应物首先循环回到碳酸氢钠结晶器中，然后将溶液中的钠量调节至允许生产高等级硫酸铵肥料产品的量。 该方法使用蒸发和沉淀单元操作以独特的顺序完成，其导致以商业上可行的方式将钠盐原料100％转化为碳酸氢钠和硫酸铵。
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3.发明授权Preparation of alkali metal carbonates from the corresponding sulfates or sulfides 失效从相应的硫酸盐或硫化物制备碱金属碳酸盐
公开(公告)号：US3401010A
公开(公告)日：1968-09-10
申请号：US39734064
申请日：1964-09-17
申请人： LUMMUS CO
发明人： SALVATORE GUERRIERI
IPC分类号： C01D7/02
CPC分类号： C01D7/02
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4.发明授权
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公开(公告)号：US3134639A
公开(公告)日：1964-05-26
申请号：US8271461
申请日：1961-01-16
发明人： NYLANDER ALFRED F
IPC分类号： C01D7/02
CPC分类号： C01D7/02
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公开(公告)号：US20040156775A1
公开(公告)日：2004-08-12
申请号：US10361687
申请日：2003-02-11
发明人： Joe Bichel , Stephen Schaaf
IPC分类号： C01D007/18
摘要： A process for recovering sodium bicarbonate and ammonium sulfate from a sodium sulfate solution. The sodium sulfate solution can be pure or contain other compounds such as sodium sulfite, carbonate, chloride, fluoride, nitrate and nitrite as would be the case if the sodium sulfate solution were derived from a sodium bicarbonate flue gas purification process. Carbon dioxide and ammonia gases or solid ammonium bicarbonate are added to the sodium sulfate solution to precipitate sodium bicarbonate which is removed from solution. The remaining solution is treated in a unique series of precipitation steps in which reactants are first recycled back to the sodium bicarbonate crystallizer and then the amount of sodium in the solution is adjusted to an amount that allows high grade ammonium sulfate fertilizer product to be produced. The process is accomplished using evaporation and precipitation unit operations in a unique sequence that results in 100% conversion of the sodium salt feed stock to sodium bicarbonate and ammonium sulfate in a commercially viable manner.
摘要翻译： 从硫酸钠溶液中回收碳酸氢钠和硫酸铵的方法。 硫酸钠溶液可以是纯的或含有其它化合物，例如亚硫酸钠，碳酸盐，氯化物，氟化物，硝酸盐和亚硝酸盐，如果硫酸钠溶液来自碳酸氢钠烟道气净化方法。 将二氧化碳和氨气或固体碳酸氢铵加入到硫酸钠溶液中以沉淀从溶液中除去的碳酸氢钠。 剩余的溶液以独特的一系列沉淀步骤处理，其中将反应物首先循环回到碳酸氢钠结晶器中，然后将溶液中的钠量调节至允许生产高等级硫酸铵肥料产品的量。 该方法使用蒸发和沉淀单元操作以独特的顺序完成，其导致以商业上可行的方式将钠盐原料100％转化为碳酸氢钠和硫酸铵。
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公开(公告)号：US06692716B1
公开(公告)日：2004-02-17
申请号：US09292011
申请日：1999-04-15
申请人： Robin Phinney
发明人： Robin Phinney
IPC分类号： C01D700
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。
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8.发明授权
公开(公告)号：US5654351A
公开(公告)日：1997-08-05
申请号：US494073
申请日：1995-06-23
申请人： Steve Kresnyak , Jake Halldorson
发明人： Steve Kresnyak , Jake Halldorson
CPC分类号： B01D53/502 , C01C1/244 , C01D7/02 , C01D7/18 , Y02P20/142
摘要： There is disclosed a process for recovering sodium bicarbonate and forming ammonium sulfate from a source containing sodium sulfate. The method involves contacting the sodium sulfate in solution with carbon dioxide and a compound containing ammonia. Sodium bicarbonate is precipitated in high purity from the solution. It is important to maintain the temperature of the source solution at or above 32.degree. C. This provision eliminates contamination of hydrates or ammonium bicarbonate components. The filtrate of the sodium bicarbonate reaction can be further processed to yield an ammonium sulfate product in the concentrated liquid or precipitated form in high purity. The basic process can be expanded to be combined with a conventional Claus process for sulphur recovery as a Tail Gas Unit, combined with lime injection to result in gypsum precipitation or can be further employed in a wet scrubbing process for FGD schemes.
摘要翻译： 公开了从含有硫酸钠的源中回收碳酸氢钠并形成硫酸铵的方法。 该方法包括使溶液中的硫酸钠与二氧化碳和含氨的化合物接触。 碳酸氢钠从溶液中以高纯度沉淀。 将源溶液的温度保持在32℃或以上是很重要的。该条款消除了水合物或碳酸氢铵组分的污染。 可以进一步处理碳酸氢钠反应的滤液，得到浓缩液体中的硫酸铵产物或高纯度的沉淀形式。 基本方法可以扩展为与作为尾气单元的硫回收的常规Claus方法结合，结合石灰注入以导致石膏沉淀，或者可以进一步用于FGD方案的湿式洗涤方法。
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公开(公告)号：US5449506A
公开(公告)日：1995-09-12
申请号：US271367
申请日：1994-07-06
摘要： A method for producing potassium carbonate using a continuous countercurrent exchange system. A continuous ion exchange system with resin in the ammonium form is flushed with a saturated potassium chloride solution which displaces the ammonium ion and replaces it with potassium. Ammonium carbonate is then passed through the ion exchanger to place the ammonium in the reserve form, by displacing the potassium, and produce a concentrated potassium carbonate solution. This process is done in a continuous countercurrent manner which allows maximum recovery of the potassium carbonate as a 15-18% by weight solution with minimum impurities, and at high throughput rates. The potassium carbonate solution is then removed, evaporated, dried, sized and stored for subsequent shipment. The ammonium chloride from the ion exchanger is treated with slaked lime to produce ammonium hydroxide, which in turn is reacted with carbon dioxide (from calcined limestone or an outside source) to regenerate ammonium carbonate for reuse in the ion exchanger. Calcium chloride is a co-product of the overall reaction.
摘要翻译： 一种使用连续逆流交换系统生产碳酸钾的方法。 将具有铵形式的树脂的连续离子交换系统用饱和的氯化钾溶液冲洗，其将铵离子置换并用钾代替。 然后将碳酸铵通过离子交换剂，将铵置于储备形式中，通过置换钾并产生浓缩的碳酸钾溶液。 该方法以连续的逆流方式进行，其允许最大限度地回收作为具有最少杂质的15-18重量％溶液的碳酸钾，并以高产率。 然后除去碳酸钾溶液，蒸发，干燥，定型并储存以备后续装运。 来自离子交换剂的氯化铵用熟石灰处理以产生氢氧化铵，其又与二氧化碳（来自经煅烧的石灰石或外源）反应，以再生碳酸铵以在离子交换器中重新使用。 氯化钙是整体反应的共同产物。
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公开(公告)号：US4478599A
公开(公告)日：1984-10-23
申请号：US382048
申请日：1982-05-25
摘要： A method for continuously controlling the formation of crystal fines in a continuous crystallizing process in which product crystals are produced in a crystallizing zone from crystallizable material in a mother liquor, and in which product crystals are thereafter recovered. The invention is practiced by adding a flocculant, specific to the crystallizable material, to the mother liquor at a rate effective to cause flocculation of particles of crystallizable material in the mother liquor. One embodiment of the invention is practiced in a process for producing sodium bicarbonate crystals by adding anionic polyacrylate and/or polyacrylamide polymers to a sodium carbonate-containing feed brine received in a carbonator.
摘要翻译： 在连续结晶工艺中连续控制结晶细粉的形成方法，其中在结晶区中从母液中的可结晶材料产生产物晶体，然后回收产物晶体。 本发明通过向母液中以可有效引起母液中可结晶材料颗粒絮凝的速率加入特定于可结晶材料的絮凝剂来实施本发明。 本发明的一个实施方案是通过向在碳酸化器中接收的含碳酸钠的进料盐水中加入阴离子聚丙烯酸酯和/或聚丙烯酰胺聚合物来制备碳酸氢钠晶体的方法。
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