公开(公告)号：US20150098876A1

公开(公告)日：2015-04-09

申请号：US14568810

申请日：2014-12-12

Applicant: SOLVAY SA

Inventor： Perrine DAVOINE ,  Francis M. COUSTRY ,  Jean-Paul DETOURNAY ,  Kurt ALLEN

IPC: C01D7/10

CPC classification number: C01D7/10 ,  B01D53/40 ,  B01D53/77 ,  B01D2251/304 ,  B01D2251/606 ,  B01D2257/2045 ,  B01D2257/302 ,  B01D2257/504 ,  C01D7/00 ,  C01D7/126 ,  C01D7/24 ,  Y02P20/152

Abstract: Process for the joint production of sodium carbonate and sodium bicarbonate crystals, according to which: a solid powder derived from sodium sesquicarbonate, having a mean particle diameter comprised between 0.1 and 10 mm is dissolved in water; the resulting water solution is introduced into a crystallizer, wherein a first water suspension comprising sodium carbonate crystals is produced; the first water suspension is subjected to a separation, in order to produce crystals comprising sodium carbonate on the one hand, which are valorized, and a mother liquor on the other hand; and a part of the mother liquor is taken out of the crystallizer and put into contact in, a gas liquid contactor, with a gas comprising carbon dioxide, in order to produce a second water suspension comprising sodium bicarbonate crystals, which are separated and valorized. A reagent powder comprising sodium bicarbonate crystals made by such process.

Abstract translation: 用于联合生产碳酸钠和碳酸氢钠晶体的方法，其中将来自碳酸二钠的固体粉末，其平均粒径为0.1至10mm，溶于水; 将所得水溶液引入结晶器中，其中制备包含碳酸钠晶体的第一水悬浮液; 将第一水悬浮液进行分离，以产生一方面包含加价的碳酸钠和另一方面是母液的晶体; 并将一部分母液从结晶器中取出并与气液接触器与包含二氧化碳的气体接触，以便产生包含碳酸氢钠晶体的第二水悬浮液，所述第二水悬浮液分离并加价。 包含通过这种方法制造的碳酸氢钠晶体的试剂粉末。

公开(公告)号：US20180222759A1

公开(公告)日：2018-08-09

申请号：US15944100

申请日：2018-04-03

Applicant: SOLVAY SA

Inventor： Perrine DAVOINE ,  Francis M. COUSTRY ,  Jean-Paul DETOURNAY ,  Kurt ALLEN

IPC: C01D7/10 ,  C01D7/24 ,  C01D7/12 ,  C01D7/00 ,  B01D53/40

CPC classification number: C01D7/10 ,  B01D53/40 ,  B01D53/77 ,  B01D2251/304 ,  B01D2251/606 ,  B01D2257/2045 ,  B01D2257/302 ,  B01D2257/504 ,  C01D7/00 ,  C01D7/126 ,  C01D7/24 ,  Y02P20/152

Abstract: Process for the joint production of sodium carbonate and sodium bicarbonate crystals, according to which: a solid powder derived from sodium sesquicarbonate, having a mean particle diameter comprised between 0.1 and 10 mm is dissolved in water; the resulting water solution is introduced into a crystallizer, wherein a first water suspension comprising sodium carbonate crystals is produced; the first water suspension is subjected to a separation, in order to produce crystals comprising sodium carbonate on the one hand, which are valorized, and a mother liquor on the other hand; and a part of the mother liquor is taken out of the crystallizer and put into contact in, a gas liquid contactor, with a gas comprising carbon dioxide, in order to produce a second water suspension comprising sodium bicarbonate crystals, which are separated and valorized. A reagent powder comprising sodium bicarbonate crystals made by such process.