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。