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

IPC分类号： C01D5/00 ,  C01D3/06

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：US20050220698A1

公开(公告)日：2005-10-06

申请号：US10814778

申请日：2004-03-30

申请人： Pushpito Ghosh ,  Kaushik Langalia ,  Maheshkumar Gandhi ,  Rohit Dave ,  Himanshu Joshi ,  Rajinder Vohra ,  Vadakke Mohandas ,  Sohan Daga ,  Koushik Halder ,  Hasina Deraiya ,  Ramjibhai Rathod ,  Abdulhamid Hamidani

发明人： Pushpito Ghosh ,  Kaushik Langalia ,  Maheshkumar Gandhi ,  Rohit Dave ,  Himanshu Joshi ,  Rajinder Vohra ,  Vadakke Mohandas ,  Sohan Daga ,  Koushik Halder ,  Hasina Deraiya ,  Ramjibhai Rathod ,  Abdulhamid Hamidani

IPC分类号： C01B17/96 ,  C01D5/00 ,  C01F5/22 ,  C05D1/02

CPC分类号： C01F5/22 ,  C01D5/00 ,  C05D1/02 ,  Y02P20/125

摘要： A novel integrated process for the recovery of sulphate of potash (SOP) from sulphate rich bittern is disclosed. The process requires only bittern and lime as raw materials. Kainite type mixed salt is obtained by fractional crystallization of the bittern, Kainite is converted to schoenite with simultaneous removal of NaCl by processing it with water and end liquor obtained from reaction of schoenite with MOP for its conversion to SOP. The end liquor from kainite to schoenite conversion (SEL) is used for the recovery of MOP. SEL is desulphated and supplemented with MgCl2 using end bittern generated in the process of making carnallite. The carnallite is decomposed to get crude potash which in turn processed to get MOP. The carnallite decomposed liquor produced in the decomposition of carnallite is reacted with hydrated lime for preparing CaCl2 solution and high purity Mg(OH)2 having low boron content, The CaCl2 solution is used for desulphatation of SEL producing high purity gypsum as a byproduct. It is shown that the liquid steams containing potash are recycled in the process, the recovery of potash in the form of SOP is quantitative.

摘要翻译： 公开了一种用于从富含硫酸盐的盐水中回收钾盐（SOP）的新颖的综合方法。 该过程只需要盐水和石灰作为原料。 通过盐水的分级结晶获得凯氏铁矿型混合盐，通过用水和硫酸钠与MOP的反应得到的终浓度同时除去NaCl，转化为SOP，将凯氏铁矿转化为白铁矿。 使用从赤铁矿转变为白铁矿转化（SEL）的终液用于回收MOP。 SEL在制备光卤石的过程中产生的终止盐酸脱硫并补充有MgCl 2。 光卤石被分解以得到粗制的钾盐，然后将其处理得到MOP。 碳酸钙分解中产生的光卤石分解液与用于制备CaCl 2 2溶液的熟石灰和具有低硼含量的高纯度Mg（OH）2 N 2反应， SUB> 2 溶液用于SEL生产高纯度石膏作为副产物的脱硫。 结果表明，含钾化合物的液体在回收过程中，以SOP形式回收钾肥是定量的。

公开(公告)号：US20050220697A1

公开(公告)日：2005-10-06

申请号：US10814779

申请日：2004-03-30

申请人： Rajinder Vohra ,  Pushpito Ghosh ,  Ashokkumar Kasundra ,  Himanshu Joshi ,  Rohit Dave ,  Maheshkumar Gandhi ,  Kaushik Langalia ,  Koushik Halder ,  Sohan Daga ,  Ramjibhai Rathod ,  Hasina Deraiya ,  Purashottambhai Jadav ,  Vadakke Mohandas ,  Abdulhamid Hamidani

发明人： Rajinder Vohra ,  Pushpito Ghosh ,  Ashokkumar Kasundra ,  Himanshu Joshi ,  Rohit Dave ,  Maheshkumar Gandhi ,  Kaushik Langalia ,  Koushik Halder ,  Sohan Daga ,  Ramjibhai Rathod ,  Hasina Deraiya ,  Purashottambhai Jadav ,  Vadakke Mohandas ,  Abdulhamid Hamidani

IPC分类号： C01D3/06 ,  C01D3/14 ,  C01F5/22 ,  C01F5/30 ,  C01F11/46 ,  C22B7/00 ,  C22B26/10

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：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

IPC分类号： C01D3/06 ,  C01D3/04 ,  C01D3/08 ,  C01D3/12 ,  C01D3/16 ,  C01F11/46

CPC分类号： C01D3/06 ,  C01D3/16 ,  C01F11/46

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：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。

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。