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1.发明授权Method of recycling of by-products for the production of soda ash and ammonium sulphate 有权用于生产苏打灰和硫酸铵的副产物回收方法公开(公告)号：US09193601B2
公开(公告)日：2015-11-24
申请号：US14041856
申请日：2013-09-30
申请人： Pushpito Kumar Ghosh , Haresh Mahipatlal Mody , Rajesh Shantilal Somani , Pratyush Maiti , Maheshkumar Ramniklal Gandhi , Hari Chand Bajaj , Jatin Rameshchandra Chunawala , Sumesh Chandra Upadhyay
发明人： Pushpito Kumar Ghosh , Haresh Mahipatlal Mody , Rajesh Shantilal Somani , Pratyush Maiti , Maheshkumar Ramniklal Gandhi , Hari Chand Bajaj , Jatin Rameshchandra Chunawala , Sumesh Chandra Upadhyay
摘要： A method of producing soda ash and ammonium sulphate by recycling by-products of Merseberg and Solvay processes includes treating brine with soda ash distiller waste for desulphatation of the brine to obtain gypsum, recovering pure salt from the desulphated brine and utilizing it in manufacture of soda ash in a Solvay process, washing the gypsum and reacting it with liquor ammonia and carbon dioxide to obtain CaCO3 and ammonium sulphate, separating the CaCO3 from the ammonium sulphate solution and recovering solid ammonium sulphate, washing the CaCO3 followed by calcination to generate CO2 and lime, recycling the CO2 in the Solvay process to obtain soda ash, recycling the lime with ammonium chloride generated in the Solvay process to recover ammonia and obtain distiller waste containing CaCl2 as a by-product, recycling the by-product distiller waste for the desulphatation of the brine, and recycling the ammonia recovered.
摘要翻译： 通过回收Merseberg和Solvay工艺的副产物生产苏打灰和硫酸铵的方法包括用苏打灰蒸馏器废物处理盐水以使盐水脱硫以获得石膏，从脱硫的盐水中回收纯盐，并在制造苏打 在Solvay工艺中，将石膏洗涤并与液氨和二氧化碳反应，得到CaCO 3和硫酸铵，从硫酸铵溶液中分离CaCO3并回收固体硫酸铵，洗涤CaCO3，随后煅烧以产生CO 2和石灰 ，在Solvay工艺中回收二氧化碳以获得苏打灰，在Solvay过程中产生的氯化铵回收石灰以回收氨，并获得含有CaCl 2作为副产物的蒸馏器废物，将副产物蒸馏废物回收用于脱硫 盐水，回收回收的氨。
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2.发明申请Method Of Recycling Of By-Products For The Production Of Soda Ash And Ammonium Sulphate 有权用于生产苏打灰和硫酸铵的副产物回收方法公开(公告)号：US20150093309A1
公开(公告)日：2015-04-02
申请号：US14041856
申请日：2013-09-30
申请人： Pushpito Kumar Ghosh , Haresh Mahipatlal Mody , Rajesh Shantilal Somani , Pratyush Maiti , Maheshkumar Ramniklal Gandhi , Hari Chand Bajaj , Jatin Rameshchandra Chunawala , Sumesh Chandra Upadhyay
发明人： Pushpito Kumar Ghosh , Haresh Mahipatlal Mody , Rajesh Shantilal Somani , Pratyush Maiti , Maheshkumar Ramniklal Gandhi , Hari Chand Bajaj , Jatin Rameshchandra Chunawala , Sumesh Chandra Upadhyay
摘要： A method of producing soda ash and ammonium sulphate by recycling by-products of Merseberg and Solvay processes includes treating brine with soda ash distiller waste for desulphatation of the brine to obtain gypsum, recovering pure salt from the desulphated brine and utilizing it in manufacture of soda ash in a Solvay process, washing the gypsum and reacting it with liquor ammonia and carbon dioxide to obtain CaCO3 and ammonium sulphate, separating the CaCO3 from the ammonium sulphate solution and recovering solid ammonium sulphate, washing the CaCO3 followed by calcination to generate CO2 and lime, recycling the CO2 in the Solvay process to obtain soda ash, recycling the lime with ammonium chloride generated in the Solvay process to recover ammonia and obtain distiller waste containing CaCl2 as a by-product, recycling the by-product distiller waste for the desulphatation of the brine, and recycling the ammonia recovered.
摘要翻译： 通过回收Merseberg和Solvay工艺的副产物生产苏打灰和硫酸铵的方法包括用苏打灰蒸馏器废物处理盐水以使盐水脱硫以获得石膏，从脱硫的盐水中回收纯盐，并在制造苏打 在Solvay工艺中，将石膏洗涤并与液氨和二氧化碳反应，得到CaCO 3和硫酸铵，从硫酸铵溶液中分离CaCO3并回收固体硫酸铵，洗涤CaCO3，随后煅烧以产生CO 2和石灰 ，在Solvay工艺中回收二氧化碳以获得苏打灰，在Solvay过程中产生的氯化铵回收石灰以回收氨，并获得含有CaCl 2作为副产物的蒸馏器废物，将副产物蒸馏废物回收用于脱硫 盐水，回收回收的氨。
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3.发明授权公开(公告)号：US08721999B2
公开(公告)日：2014-05-13
申请号：US13981957
申请日：2010-03-29
申请人： Pushpito Kumar Ghosh , Haresh Mahipatlal Mody , Jatin Rameshchandra Chunawala , Maheshkumar Ramniklal Gandhi , Hari Chand Bajaj , Pratyush Maiti , Himanshu Labhshanker Joshi , Hasina Hajibhai Deraiya , Upendra Padmakant Saraiya
发明人： Pushpito Kumar Ghosh , Haresh Mahipatlal Mody , Jatin Rameshchandra Chunawala , Maheshkumar Ramniklal Gandhi , Hari Chand Bajaj , Pratyush Maiti , Himanshu Labhshanker Joshi , Hasina Hajibhai Deraiya , Upendra Padmakant Saraiya
摘要： Kainite mixed salt is treated with water to obtain solid schoenite and a schoenite end liquor. The latter is desulphated using recycled CaCl2 and thereafter evaporated to obtain camallite crystals, from which KCl is recovered, and a liquor rich in MgCl2. Gypsum produced during desulphatation is reacted with aqueous ammonia and CO2 to produce ammonium sulphate and calcium carbonate. The calcium carbonate is calcined to obtained CaO and CO2. The CaO is slaked and reacted with the MgCl2-rich liquor generated above to produce slurry of Mg(OH)2 in aqueous CaCl2. To this surface modifying agent is added while hot and, after cooling, the slurry yields surface modified Mg(OH)2. The filtrate rich in CaCl2 is recycled for desulphatation process above. The solid surface modified Mg(OH)2 may he calcined to produced MgO. The schoenite and KCl are reacted to produce solid sulphate of potash.
摘要翻译： 用水处理凯氏铁矿混合盐，得到固体白铁矿和白铁矿终液。 后者使用再循环的CaCl 2进行脱硫，然后蒸发，得到回收KCl的斜面晶体和富含MgCl 2的液体。 在脱硫过程中产生的石膏与氨水和二氧化碳反应生成硫酸铵和碳酸钙。 将碳酸钙煅烧得到CaO和CO 2。 将CaO粉碎并与上述产生的富含MgCl 2的液体反应以在CaCl 2水溶液中产生Mg（OH）2的浆料。 在加热的同时加入该表面改性剂，冷却后，浆料产生表面改性的Mg（OH）2。 富含CaCl2的滤液回收利用上述脱硫工艺。 可以将固体表面改性的Mg（OH）2煅烧生成MgO。 使白铁矿和KCl反应生成固体硫酸钾。
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4.发明申请公开(公告)号：US20130315805A1
公开(公告)日：2013-11-28
申请号：US13981957
申请日：2010-03-29
申请人： Pushpito Kumar Ghosh , Haresh Mahipatlal Mody , Jatin Rameshchandra Chunawala , Maheshkumar Ramniklal Gandhi , Hari Chand Bajaj , Pratyush Maiti , Himanshu Labhshanker Joshi , Hasina Hajibhai Deraiya , Upendra Padmakant Saraiya
发明人： Pushpito Kumar Ghosh , Haresh Mahipatlal Mody , Jatin Rameshchandra Chunawala , Maheshkumar Ramniklal Gandhi , Hari Chand Bajaj , Pratyush Maiti , Himanshu Labhshanker Joshi , Hasina Hajibhai Deraiya , Upendra Padmakant Saraiya
摘要： The present invention provides an integrated process for the recovery of sulphate of potash (SOP), ammonium sulphate and surface modified magnesium hydroxide and/or magnesium oxide utilizing kainite mixed salt and ammonia as the only consumable raw materials. The process involves treating kainite mixed salt with water to obtain solid schoenite and a schoenite end liquor. The latter is desulphated using CaCl2 generated in the process itself and thereafter evaporated to obtain carnallite crystals from which KCl is recovered while the liquor rich in MgCl2 serves as a source of MgCL. The gypsum produced during desulphatation is reacted with aqueous ammonia and CO2 to produce ammonium sulphate and calcium carbonate. The calcium carbonate so obtained is then calcined to obtained CaO and CO2. The CaO is then slaked in decarbonated water and reacted with the MgCl2-rich liquor generated above to produce slurry of Mg(OH)2 in aqueous CaCl2. To this surface modifying agent is added under hot condition and, after cooling, the slurry is more easily filterable and yields surface modified Mg(OH)2. The filtrate rich in CaCl2 is then recycled for desulphatation process above. The solid surface modified Mg(OH)2 is then calcined to produced MgO or used as such in appropriate applications. The schoenite and KCl are reacted to produce SOP in solid form while the liquor is recycled in the schoenite production step.
摘要翻译： 本发明提供了一种用于回收硫酸钾（SOP），硫酸铵和表面改性氢氧化镁和/或氧化镁的综合方法，其使用赤铁矿混合盐和氨作为唯一的可消耗的原料。 该方法包括用水处理海藻酸盐混合盐，得到固体长丝云母和硫铁矿末端液。 后者使用在本方法中产生的CaCl 2进行脱硫，然后蒸发，得到回收KCl的光卤石晶体，富含MgCl 2的液体作为MgCl源。 在脱硫过程中产生的石膏与氨水和二氧化碳反应产生硫酸铵和碳酸钙。 然后将如此获得的碳酸钙煅烧以获得CaO和CO 2。 然后将CaO在脱碳酸水中溶解并与上述产生的富含MgCl 2的液体反应以在CaCl 2水溶液中产生Mg（OH）2的浆液。 在热条件下加入该表面改性剂，冷却后，浆料更易于过滤，得到表面改性的Mg（OH）2。 然后将富含CaCl2的滤液再循环用于上述脱硫过程。 然后将固体表面改性的Mg（OH）2煅烧生产MgO或在适当的应用中使用。 使白铁矿和KCl反应生成固体形式的SOP，同时在白铁矿生产步骤中回收液体。
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5.发明申请Process for the Preparation of Stable Iodate-Exchanged Synthetic Hydrotalcite with Zero Effluent Discharge 有权制备稳定的碘酸盐交换的合成水滑石的方法，具有零流出物公开(公告)号：US20090188810A1
公开(公告)日：2009-07-30
申请号：US12239621
申请日：2008-09-26
申请人： Pushpito Kumar Ghosh , Mahesh Ramaniklal Gandhi , Satish Hariray Mehta , Ramachandraiah Gadde , Jatin Rameshchandra Chunawala , Mirnal Vinodbhai Sheth , Girirajsinh Sabalsinh Gohil
发明人： Pushpito Kumar Ghosh , Mahesh Ramaniklal Gandhi , Satish Hariray Mehta , Ramachandraiah Gadde , Jatin Rameshchandra Chunawala , Mirnal Vinodbhai Sheth , Girirajsinh Sabalsinh Gohil
IPC分类号： C25B1/20
CPC分类号： C01F7/005 , A23L27/00 , A23L33/16 , C01P2002/22
摘要： The present invention relates to a process for the preparation of stable iodate-exchanged hydrotalcite with zero effluent discharge. The iodate-exchanged hydrotalcite produced is useful as iodizing agent. The invention further relates to utilization of alkaline effluent generated in the process of ion exchange of iodate into SHT so as to fully recycle the residual iodate anion and also utilize the alkali generated in the process for production of additional quantities of iodate through reaction with iodine crystals followed by electrochemical oxidation to obtain pure aqueous solution of iodate salt which can be reused for preparation of the stable iodizing agent. The process gives zero effluent discharge hence economical.
摘要翻译： 本发明涉及一种制备具有零流出物排出的稳定的碘酸盐交换的水滑石的方法。 产生的碘酸盐交换的水滑石可用作碘化剂。 本发明还涉及在将碘酸盐离子交换过程中产生的碱性流出物在SHT中的利用，以便完全循环残留的碘酸根阴离子，并且还利用在该方法中产生的碱，以通过与碘晶体反应生产额外量的碘酸盐 然后进行电化学氧化，得到纯的碘酸盐水溶液，可以重新用于制备稳定的碘化剂。 该方法使得废水排放为零，因此是经济的。
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6.发明授权Process for the preparation of stable iodate-exchanged synthetic hydrotalcite with zero effluent discharge 有权制备稳定的碘酸盐交换的合成水滑石的方法，具有零排放物排放公开(公告)号：US08241483B2
公开(公告)日：2012-08-14
申请号：US12239621
申请日：2008-09-26
申请人： Pushpito Kumar Ghosh , Mahesh Ramaniklal Gandhi , Satish Hariray Mehta , Ramachandraiah Gadde , Jatin Rameshchandra Chunawala , Mirnal Vinodbhai Sheth , Girirajsinh Sabalsinh Gohil
发明人： Pushpito Kumar Ghosh , Mahesh Ramaniklal Gandhi , Satish Hariray Mehta , Ramachandraiah Gadde , Jatin Rameshchandra Chunawala , Mirnal Vinodbhai Sheth , Girirajsinh Sabalsinh Gohil
CPC分类号： C01F7/005 , A23L27/00 , A23L33/16 , C01P2002/22
摘要： The present invention relates to a process for the preparation of stable iodate-exchanged hydrotalcite with zero effluent discharge. The iodate-exchanged hydrotalcite produced is useful as iodizing agent. The invention further relates to utilization of alkaline effluent generated in the process of ion exchange of iodate into SHT so as to fully recycle the residual iodate anion and also utilize the alkali generated in the process for production of additional quantities of iodate through reaction with iodine crystals followed by electrochemical oxidation to obtain pure aqueous solution of iodate salt which can be reused for preparation of the stable iodizing agent. The process gives zero effluent discharge hence economical.
摘要翻译： 本发明涉及一种制备具有零流出物排出的稳定的碘酸盐交换的水滑石的方法。 产生的碘酸盐交换的水滑石可用作碘化剂。 本发明还涉及在将碘酸盐离子交换过程中产生的碱性流出物用于SHT中，以便完全循环剩余的碘酸根阴离子，并且还利用在该方法中产生的碱，以通过与碘晶体反应生产额外量的碘酸盐 然后进行电化学氧化，得到纯的碘酸盐水溶液，可以重新用于制备稳定的碘化剂。 该方法使得废水排放为零，因此是经济的。
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公开(公告)号：US07695707B2
公开(公告)日：2010-04-13
申请号：US10879510
申请日：2004-06-30
申请人： Pushpito Kumar Ghosh , Satish Hariray Mehta , Jatin Rameshchandra Chunawala , Mrunalben Vinodray Sheth , Mahesh Ramniklal Gandhi
发明人： Pushpito Kumar Ghosh , Satish Hariray Mehta , Jatin Rameshchandra Chunawala , Mrunalben Vinodray Sheth , Mahesh Ramniklal Gandhi
IPC分类号： C07F11/00
CPC分类号： A61K33/14 , A61K33/18 , A61K2300/00
摘要： A method for preparation of iodizing agent for the use in the formulation of iodized salt that offers excellent stability of iodine in iodized salt is developed and the unrefined salt iodized with this compound was tested for its stability in presence of moisture, temperature and metal salts at higher temperature. The hydrotalcite type layered compound was used to prepare such compound and part of carbonate was substituted with iodate anion. The iodizing agent exhibited excellent stability of iodine in iodized salt.
摘要翻译： 开发了用于制备碘盐制剂中的碘化剂的方法，该方法在碘盐中提供了碘的优异稳定性，并测试了用该化合物碘化的未精制盐在水分，温度和金属盐存在下的稳定性 较高的温度。 使用水滑石型层状化合物制备这种化合物，部分碳酸酯被碘酸根阴离子取代。 碘化剂在碘盐中表现出优异的碘稳定性。
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公开(公告)号：US06740253B2
公开(公告)日：2004-05-25
申请号：US10055814
申请日：2002-01-23
申请人： Rajinder Nath Vohra , Pushpito Kumar Ghosh , Maheshkumar Ramniklal Gandhi , Himanshu Labhshanker Joshi , Hasina Hajibhai Deraiya , Rohit Harshadray Dave , Koushik Halder , Kishorkumar Manmohandas Majeethia , Sohan Lal Daga , Vadakke Puthoor Mohandas , Rahul Jasvantrai Sanghavi
发明人： Rajinder Nath Vohra , Pushpito Kumar Ghosh , Maheshkumar Ramniklal Gandhi , Himanshu Labhshanker Joshi , Hasina Hajibhai Deraiya , Rohit Harshadray Dave , Koushik Halder , Kishorkumar Manmohandas Majeethia , Sohan Lal Daga , Vadakke Puthoor Mohandas , Rahul Jasvantrai Sanghavi
IPC分类号： C09K300
CPC分类号： C07C231/12 , C01B11/20 , C01D3/10 , C07B39/00 , C07C17/02 , C07C37/62 , Y02P20/582 , C07C22/04 , C07C233/15 , C07C39/367 , C07C39/27
摘要： The present invention relates to a non-hazardous brominating reagent from an aqueous alkaline bromine byproduct solution obtained from bromine recovery plant and containing 25 to 35% bromine dissolved in aqueous lime or sodium hydroxide containing alkali bromide and alkali bromate mixture having bromide to bromate stoichiometric ratio in the range of 5:1 to 5.1:1 or 2:1 to 2.1:1 and a pH ranging between 8-12 and also relates to a method for borminating aromatic compounds by using the above brominating agent.
摘要翻译： 本发明涉及一种由溴回收装置得到的碱性溴副产物水溶液的非危险溴化试剂，其中含有25至35％的溴溶解在含有溴化碱和溴酸碱的溴酸碱和碱式溴酸盐混合物的含水石灰或氢氧化钠中，溴化物的化学计量比 在5：1至5.1：1或2：1至2.1：1的范围内，pH范围在8-12之间，并且还涉及通过使用上述溴化剂使芳族化合物起振的方法。
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公开(公告)号：US07771682B2
公开(公告)日：2010-08-10
申请号：US11376707
申请日：2006-03-15
申请人： Pushpito Kumar Ghosh , Himanshu Labhshanker Joshi , Hasina Hajibhai Deraiya , Maheshkumar Ramniklal Gandhi , Rohit Harshadrai Dave , Kaushik Jethalal Langalia , Vadakke Puthoor Mohandas
发明人： Pushpito Kumar Ghosh , Himanshu Labhshanker Joshi , Hasina Hajibhai Deraiya , Maheshkumar Ramniklal Gandhi , Rohit Harshadrai Dave , Kaushik Jethalal Langalia , Vadakke Puthoor Mohandas
摘要： The process provides for the preparation of MgO from the reaction of magnesium salt and alkali/lime. The crude Mg(OH)2 is directly calcined and then treated with water to disintegrate the mass spontaneously to yield a slurry and dissolve away the soluble salts. This slurry is much easier to filter and wash than the original Mg(OH)2 slurry, which helps to speed up the purification operation and also conserve fresh water. Another important advantage of the present method is that even pasty or dough like reaction products that are processed using dough mixers and similar equipment can be worked up with ease. There is no compromise in the quality of MgO achieved in this manner.
摘要翻译： 该方法从镁盐和碱/石灰的反应制备MgO。 将粗Mg（OH）2直接煅烧，然后用水处理，自发分解物料，产生浆料并溶解掉可溶性盐。 这种浆液比原来的Mg（OH）2浆料更容易过滤和洗涤，这有助于加速净化操作并且还保存淡水。 本方法的另一个重要优点是，即使是使用面团混合器和类似设备加工的糊状或面团状的反应产物也可以容易地处理。 以这种方式实现的MgO的质量没有妥协。
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公开(公告)号：US20100172812A1
公开(公告)日：2010-07-08
申请号：US12400512
申请日：2009-03-09
申请人： Pushpito Kumar Ghosh , Himanshu Labhshanker Joshi , Hasina Hajibahi Deraiya , Maheshkumar Ramniklal Gandhi , Rohit Harshadrai Dave , Kaushik Jethalal Langalia , Vadakke Puthoor Mohandas
发明人： Pushpito Kumar Ghosh , Himanshu Labhshanker Joshi , Hasina Hajibahi Deraiya , Maheshkumar Ramniklal Gandhi , Rohit Harshadrai Dave , Kaushik Jethalal Langalia , Vadakke Puthoor Mohandas
CPC分类号： C01F11/24 , C01F5/08 , C01F5/20 , C01P2002/72 , C01P2006/80
摘要： The present invention provides an improved process for the preparation of MgO of high purity >99% from salt bitterns via intermediate formation of Mg(OH)2 obtained from the reaction of MgCl2 and lime, albeit indirectly, i.e., MgCl2 is first reacted with NH3 in aqueous medium and the slurry is then filtered with ease. The resultant NH4Cl-containing filtrate is then treated with any lime, to regenerate NH3 while the lime itself gets transformed into CaCl2 that is used for desulphatation of bittern so as to recover carnallite and thereafter MgCl2 of desired quality required in the present invention. The crude Mg(OH)2 is dried and calcined directly to produce pure MgO, taking advantage of the fact that adhering impurities in the Mg(OH)2 either volatilize away or get transformed into the desired product, i.e., MgO.
摘要翻译： 本发明提供了一种通过MgCl2和石灰反应获得的Mg（OH）2的中间形成，从盐卤盐制备高纯度> 99％的MgO的改进方法，尽管间接地，即MgCl 2首先与NH 3反应 在水性介质中，然后容易地过滤浆液。 然后将所得的含NH 4 Cl的滤液用任何石灰处理，以再生NH 3，同时将石灰本身转化成用于卤盐脱硫的CaCl 2，以回收光卤石，此后在本发明中需要所需质量的MgCl 2。 将粗Mg（OH）2干燥并直接煅烧以产生纯MgO，利用Mg（OH）2中附着的杂质挥发掉或转化为所需产物即MgO的事实。
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