-
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。
-
公开(公告)号：US07811535B2
公开(公告)日：2010-10-12
申请号：US12400512
申请日：2009-03-09
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
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，但间接地即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。
-
公开(公告)号：US20070191214A1
公开(公告)日：2007-08-16
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
IPC分类号： B01J29/04
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 N 2直接煅烧，然后用水处理以自发分解物料，得到浆料并溶解掉可溶性盐。 这种浆料比原来的Mg（OH）2 N 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。
-
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。
-
5.发明授权公开(公告)号：US07014832B2
公开(公告)日：2006-03-21
申请号：US10814779
申请日：2004-03-30
申请人： Rajinder Nath Vohra , Pushpito Kumar Ghosh , Ashokkumar Bhagvanjibhai Kasundra , Himanshu Labhshanker Joshi , Rohit Harshadray Dave , Maheshkumar Ramniklal Gandhi , Kaushik Jethalal Langalia , Koushik Halder , Sohan Lal Daga , Ramjibhai Devjibhai Rathod , Hasina Hajibhai Deraiya , Purashottambhai Ravajibhai Jadav , Vadakke Puthoor Mohandas , Abdulhamid Usmanbhai Hamidani
发明人： Rajinder Nath Vohra , Pushpito Kumar Ghosh , Ashokkumar Bhagvanjibhai Kasundra , Himanshu Labhshanker Joshi , Rohit Harshadray Dave , Maheshkumar Ramniklal Gandhi , Kaushik Jethalal Langalia , Koushik Halder , Sohan Lal Daga , Ramjibhai Devjibhai Rathod , Hasina Hajibhai Deraiya , Purashottambhai Ravajibhai Jadav , Vadakke Puthoor Mohandas , Abdulhamid Usmanbhai Hamidani
IPC分类号： C01D3/06
CPC分类号： C01D3/14 , C01D3/06 , C01F5/22 , C01F5/30 , C01F11/46 , C01P2006/80 , C22B7/006 , C22B26/10 , Y02P10/234 , Y02P20/125
摘要： The present invention relates to recovery of industrial grade potassium chloride and low sodium edible salt from bittern as part of an integrated process. The process comprises, mixing low sulphate concentrated feed bittern (a by-product of salt industry) of density 31.5 to 32.5° Be (sp.gr. 1.277–1.289) with high density end bittern of density 36.5 to 37.5° Be′ (sp.gr. 1.336–1.35), thereby producing low sodium carnallite, from which industrial grade potassium chloride is produced. The resultant bittern is evaporated in forced evaporation system, thereby producing crude carnallite, from which low sodium salt that would be beneficial to persons suffering from hypertension is produced. When sulphate-rich bittern is used, such bittern is desulphated with CaCl2 that is generated from carnallite decomposed liquor through reaction with lime, and wherein low B2O3-containing Mg(OH)2 is a by-product. The entire content of potassium in feed bittern is recovered in the process of the invention.
摘要翻译： 本发明涉及工业级氯化钾和低钠食用盐的回收，作为一体化工艺的一部分。 该方法包括将密度为31.5至32.5°Be（sp.gr.1.277-1.289）的低浓度硫酸盐浓缩饲料卤水（盐工业的副产物）与密度为36.5至37.5°的高密度末端盐水混合。 ，1.336-1.35），由此生产低钠光卤石，产生工业级氯化钾。 由此产生的卤水在强制蒸发系统中蒸发，从而产生粗制光卤石，由此可产生对高血压患者有益的低钠盐。 当使用富含硫酸盐的卤水时，通过与石灰反应由光卤石分解的液体产生的CaCl 2 2将这种卤水脱硫，并且其中低B 2 O 2 含3％Mg（OH）2的化合物是副产物。 在本发明的方法中回收进料卤水中钾的全部含量。
-
公开(公告)号：US07041268B2
公开(公告)日：2006-05-09
申请号：US10814778
申请日：2004-03-30
申请人： Pushpito Kumar Ghosh , Kaushik Jethalal Langalia , Maheshkumar Ramniklal Gandhi , Rohit Harshadray Dave , Himanshu Labhshanker Joshi , Rajinder Nath Vohra , Vadakke Puthoor Mohandas , Sohan Lal Daga , Koushik Halder , Hasina Hajibhai Deraiya , Ramjibhai Devjibhai Rathod , Abdulhamid Usmanbhai Hamidani
发明人： Pushpito Kumar Ghosh , Kaushik Jethalal Langalia , Maheshkumar Ramniklal Gandhi , Rohit Harshadray Dave , Himanshu Labhshanker Joshi , Rajinder Nath Vohra , Vadakke Puthoor Mohandas , Sohan Lal Daga , Koushik Halder , Hasina Hajibhai Deraiya , Ramjibhai Devjibhai Rathod , Abdulhamid Usmanbhai Hamidani
CPC分类号： C01F5/22 , C01D5/00 , C05D1/02 , Y02P20/125
摘要： The present invention is directed to a novel integrated process for the recovery of sulphate of potash (SOP) from sulphate rich bittern. The process requires bittern and lime as raw materials. Kainite type mixed salt is obtained by fractional crystallization of the bittern, and is converted to schoenite which is subsequently reacted with muriate of potash (MOP) for its conversion to SOP. End liquor from kainite to schoenite conversion (SEL) is desulphated and supplemented with MgCl2 using end bittern generated in the process of making carnallite. Decomposed carnallite liquor produced is reacted with hydrated lime for preparing CaCl2 solution and high purity Mg(OH)2 having low boron content. It is shown that the liquid streams containing potash are recycled in the process, and the recovery of potash in the form of SOP is quantitative.
摘要翻译： 本发明涉及一种用于从富含硫酸盐的盐水中回收钾盐（SOP）的新型综合方法。 该过程需要卤水和石灰作为原料。 通过盐水的分级结晶获得海藻酸盐型混合盐，并转化为随后与钾盐（MOP）的酸性反应进行反应以转化为SOP的长铁矿石。 使用在制备光卤石的过程中产生的最终卤水，从赤铁矿向白铁矿转化（SEL）的终液脱硫并补充有MgCl 2。 所生产的分解的光卤石液与熟石灰反应，制备CaCl 2 O 2溶液和具有低硼含量的高纯Mg（OH）2。 显示含钾化合物的液体在该过程中循环使用，SOP形式的钾盐回收是定量的。
-
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。
-
公开(公告)号：US06890509B2
公开(公告)日：2005-05-10
申请号：US10062583
申请日：2002-01-31
申请人： Rajinder Nath Vohra , Pushpito Kumar Ghosh , Maheshkumar Ramniklal Gandhi , Himanshu Labhshanker Joshi , Hasina Hajibhai Deriya , 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 Deriya , Rohit Harshadray Dave , Koushik Halder , Kishorkumar Manmohandas Majeethia , Sohan Lal Daga , Vadakke Puthoor Mohandas , Rahul Jasvantrai Sanghavi
摘要： A new process for recovery of Low Sodium Salt from bittern has been described in the present invention, the said process comprising desulphatation of bittern (by-product of salt industry), evaporation of bittern in solar pans and processing of solid mixture with water to produce a mixture of sodium and potassium chlorides and optionally preparing “free flowing” and iodized, by known techniques.
摘要翻译： 在本发明中已经描述了从咸水中回收低钠盐的新方法，所述方法包括卤盐（盐工业的副产物）的脱硫，太阳能锅中的卤水蒸发和与水的固体混合物的加工以产生 氯化钠和氯化钾的混合物，并且通过已知技术任选地制备“自由流动”并碘化。
-
公开(公告)号：US20070219081A1
公开(公告)日：2007-09-20
申请号：US11375246
申请日：2006-03-15
IPC分类号： B01J29/04
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： 本发明提供了一种改进的方法，其通过从MgCl 2的反应获得的Mg（OH）2中间体形成从盐卤盐制备高纯度> 99％的MgO >和石灰，尽管间接地，即MgCl 2首先在水性介质中与NH 3 3反应，然后容易地过滤浆料。 然后用任何石灰处理所得的含有NH 4 Cl的滤液，以再生NH 3，同时将石灰本身转化为CaCl 2，其中 用于盐渍化的脱硫，以便回收光卤石，然后回收本发明所要求的质量的MgCl 2。 将Mg（OH）2粗品干燥并直接煅烧以产生纯的MgO，这是由于Mg（OH）2 2中附着的杂质挥发掉或者 变成所需的产品，即MgO。
-
公开(公告)号：US06776972B2
公开(公告)日：2004-08-17
申请号：US10003213
申请日：2001-10-29
申请人： Rajinder N. Vohra , Pushpito Kumar Ghosh , Vadakke Puthoor Mohandas , Himanshu Labhshanker Joshi , Hasina Hajibhai Deraiya , Rohit Harshadray Dave , Koushik Halder , Ran Bahadur Yadav , Sohan Lal Daga , Kishorkumar Manmohandas Majeethia , Upendra Padmakant Saraiya
发明人： Rajinder N. Vohra , Pushpito Kumar Ghosh , Vadakke Puthoor Mohandas , Himanshu Labhshanker Joshi , Hasina Hajibhai Deraiya , Rohit Harshadray Dave , Koushik Halder , Ran Bahadur Yadav , Sohan Lal Daga , Kishorkumar Manmohandas Majeethia , Upendra Padmakant Saraiya
IPC分类号： C01D300
CPC分类号： C01D3/06 , C02F1/5236 , C02F2101/10 , C02F2103/08 , Y02A20/128 , Y02A20/129 , Y02W10/37
摘要： A new process for recovery of common salt, potassium chloride, concentrated magnesium chloride with enriched bromide, and high purity magnesia from brine in an integrated manner, said process comprises preparation of calcium chloride by reaction of hydrochloric acid generated in the process with limestone, desulfatation of brine with calcium chloride, production of sodium chloride of superior quality in solar pans, solar evaporation of bittern thereby producing carnallite and end bittern, processing carnallite through established processes to produce potassium chloride, recovering end bittern containing highly concentrated magnesium chloride and enriched bromide and calcination of a part of the end bittern after solidification to produce high purity magnesia and hydrochloric acid utilizable in the process.
摘要翻译： 一体化方法从盐水中回收普通盐，氯化钾，浓氯化镁和高纯度氧化镁的新方法，所述方法包括通过与石灰石生成的盐酸反应制备氯化钙，脱硫 盐水与氯化钙生产，在太阳能锅炉中生产优质的氯化钠，卤水太阳能蒸发，从而生产光卤石和终止卤水，通过建立的氯化钾生产工艺处理光卤石，回收含有高浓度氯化镁和富含溴化物的终端卤水， 在固化后煅烧一部分末端卤水以产生在该过程中可利用的高纯度氧化镁和盐酸。
-
-
-
-
-
-
-
-
-
搜索结果
12 条记录 (耗时 0.029 秒)
