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首页> 外国专利> Process for the simultaneous production of potassium sulfate, ammonium sulfate, magnesium hydroxide and / or magnesium oxide from a kainite mixed salt and ammonia

Process for the simultaneous production of potassium sulfate, ammonium sulfate, magnesium hydroxide and / or magnesium oxide from a kainite mixed salt and ammonia

机译：由钾盐混合盐和氨气同时生产硫酸钾，硫酸铵，氢氧化镁和/或氧化镁的方法

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A method for the simultaneous production of potassium sulphate (SOP), ammonium sulfate, hydroxide magnesiomodificado surface and / or magnesium oxide characterized by cogeneration of such mixed utilizandosal products kainite, wherein the kainite is a double salt KCl and MgSO4 accompanied ycontiene crystallization water further NaCl and MgCl2.6H2O as impurities, and ammonia as raw materials consumables. Dichoproceso comprises the following steps: a) conversion in a first reaction zone of kainite mixed salt into schoenite using elproceso aqueous leaching, wherein said process comprises reacting the mixed salt with water yun end liquor SOP of step (e) followed by separation of pure schoenite and a final deschoenita liquor (SEL). b) Treatment of the final liquor clear schoenite obtained in step (a) with aqueous CaCl2 to separate elsulfato as gypsum, followed by cake filtration to recover a final gypsum and liquor deschoenita desulfated. c) The exposure of the final liquor desulfated schoenite obtained in step (b) to evaporation Formore a solid carnallite and rich liquor MgCl2. d) The decomposition of carnallite obtained in step (c) with water to recover the KCl and carnallite licordescompuesto (CDL) containing MgCl2 and residual KCl. e) Treatment of pure schoenite of step (a) with KCl obtained in step (d) to produce depotasio sulphate (SOP) while the final liquor SOP is recycled in the process step (a) . f) washing the recovered gypsum in step (b) to minimize the adhering impurities. g) contacting in a second reaction zone, the gypsum obtained in step (f) with ammonia liquor oun mother liquor ammonium sulfate obtained in step (i) and carbon dioxide obtained in step (k ) to produce a solution of ammonium sulfate and CaCO3 product by reaction deMerseberg. h) Filtration of CaCO3 from the product of step (g), followed by neutralization of sulfuric conácido filtering to convert residual ammonia in ammonium sulfate. i) Evaporation of the filtrate neutralized obtained in step (h) to recover the sulfate amonioa while mother phase (g) liquor is recycled. j) Washing CaCO3 obtained in step (h) with water to minimize unreacted gypsum and lasimpurezas soluble adhesive, followed by calcinations for CO2 and live high purity lime. k) The packaging of CO2 and recycling in step (g). l) Extinction lime generated in step (j) with decarbonated water and treatment with CDLgenerado in step (d) and / or rich liquor MgCl2 obtained in step (c) to produce a dispersion DEMG (OH) 2 and aqueous CaCl2.
机译：一种同时生产硫酸钾（SOP），硫酸铵，氢氧化镁和/或氧化镁的方法，其特征在于，将这种混合的利用型山武产物贝氏体热电联产，其中所述贝氏体是复盐的KCl和MgSO4，伴随着环庚二烯结晶水和另外的NaCl以MgCl2.6H2O为杂质，以氨为原料。 Dichoproceso包括以下步骤：a）使用elproceso水溶液浸出法在凯氏体混合盐的第一反应区中将其转化为钠钙石，其中所述方法包括使所述混合盐与步骤（e）的水云母液SOP反应，然后分离纯钠钙石以及最后的deschoenita酒（SEL）。 b）用CaCl 2水溶液处理在步骤（a）中获得的最终的澄清的酒石，以分离硫酸镁作为石膏，随后滤饼过滤以回收最终的石膏和脱硫的酒。 c）将步骤（b）中获得的最终的液体脱硫硫酸钙钠暴露于蒸发中，然后得到固体的香石质和浓的MgCl 2。 d）用水分解步骤（c）中获得的钠盐，回收KCl和含有MgCl2和残留KCl的钠盐licordescompuesto（CDL）。 e）用在步骤（d）中获得的KCl处理步骤（a）的纯schoenite，以产生硫酸钾（SOP），同时将最终的液体SOP在工艺步骤（a）中再循环。 f）在步骤（b）中洗涤回收的石膏以最小化粘附的杂质。 g）在第二反应区中，使步骤（f）中获得的石膏与步骤（i）中获得的氨液或母液硫酸铵和步骤（k）中获得的二氧化碳接触，以产生硫酸铵和CaCO 3产物的溶液。通过反应deMerseberg。 h）从步骤（g）的产物中过滤CaCO 3，然后中和硫酸的康乃狄克过滤，以将残余的氨转化为硫酸铵。 i）蒸发步骤（h）中获得的中和的滤液以回收硫酸铵，同时回收母相（g）液。 j）用水洗涤在步骤（h）中获得的CaCO 3，以使未反应的石膏和拉辛脲可溶的粘合剂减至最少，然后煅烧CO 2和高纯石灰。 k）包装二氧化碳并在步骤（g）中进行回收。 l）用去离子水消灭步骤（j）中生成的石灰，并在步骤（d）中用CDLgenerado和/或步骤（c）中获得的浓液MgCl2处理，以生成分散液DEMG（OH）2和CaCl2水溶液。

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