公开(公告)号：US20180050916A1

公开(公告)日：2018-02-22

申请号：US15538774

申请日：2015-12-22

Applicant: SOLVAY SA

Inventor： Eric VANDERVORST ,  David Jean Lucien SAVARY ,  Gérard DUPONT ,  Hugo WALRAVENS ,  Eric DUBOIS ,  Jean-Paul COQUEREL ,  Perrine DAVOINE ,  Karine CAVALIER ,  Ines HURTADO DOMINGEZ ,  Salvador ASENSIO

IPC: C01B32/60 ,  C01D7/12 ,  C01D7/18 ,  B01D53/04 ,  B01D53/047 ,  B01D53/22 ,  B01D53/00

CPC classification number: C01B32/60 ,  B01D53/002 ,  B01D53/0462 ,  B01D53/047 ,  B01D53/22 ,  B01D53/64 ,  B01D2256/22 ,  B01D2257/504 ,  B01D2258/02 ,  B01D2258/0283 ,  C01D7/12 ,  C01D7/18 ,  Y02C10/08 ,  Y02C10/10 ,  Y02P20/152

Abstract: Process for producing sodium carbonate with ammonia and/or for producing refined sodium bicarbonate, wherein: a low CO2 content gas generated by a unit for producing sodium carbonate with ammonia and/or generated by a unit for producing refined sodium bicarbonate is enriched into a CO2-enriched gas by using a CO2 concentration module, such as an amine-type or ammonia or PSA or TSA or cryogenic distillation or membrane-type CO2 concentration module, and said CO2-enriched gas has an increased CO2 content of: +10% (at least) to +90% (at most), by volume on a dry gas basis relative to the CO2 concentration of the low content gas, and the CO2-enriched gas is subsequently recycled to the unit for producing sodium carbonate with ammonia and/or to the unit for producing refined sodium bicarbonate, to produce sodium carbonate, or sodium bicarbonate, or to carbonate at least one part of effluent from the unit for producing sodium carbonate and/or from the unit for producing sodium bicarbonate.

公开(公告)号：US20220081334A1

公开(公告)日：2022-03-17

申请号：US17426645

申请日：2020-02-20

Applicant: SOLVAY SA

Inventor： Eric COUDRY ,  Sabrina BEDEL ,  Perrine DAVOINE ,  Thierry DELPLANCHE

IPC: C02F1/68 ,  C02F1/66 ,  B01D53/92 ,  F01N3/08 ,  B01F3/12 ,  B01F5/00 ,  B01F5/04

Abstract: A method for the removal of at least one contaminant from an aqueous liquor or a gas, comprising: preparing a solution or slurry of a solid alkali reagent by supplying a solid alkali reagent into a pre-wetting chamber via a feed pipe; supplying a liquid via two or more liquid sidestreams, each through a liquid inlet positioned on a side wall of the chamber to allow the liquid sidestreams to wash an internal wall of a frusto-conical section of the chamber and flow, preferably tangentially onto the internal wall in a downward spiraling manner thereby forming a vortex, towards a fluid outlet of the chamber and to further wet the solid alkali reagent with the supplied liquid thereby forming a pre-wetted reagent; and flowing a stream though a conduit, thereby creating a suction by the eductor to draw the pre-wetted reagent out of the chamber fluid outlet and mixing it with the stream to form a slurry or solution; and directing the slurry or solution exiting the eductor to an aqueous liquor or gas treatment unit, removing at least a portion of the contaminant from the aqueous liquor or gas in the treatment unit.

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.

公开(公告)号：US20180169567A1

公开(公告)日：2018-06-21

申请号：US15739350

申请日：2016-07-01

Applicant: SOLVAY SA

Inventor： Eric VANDERVORST ,  David Jean Lucien SAVARY ,  Gérard DUPONT ,  Hugo WALRAVENS ,  Eric Pierre DUBOIS ,  Jean-Paul COQUEREL ,  Perrine DAVOINE ,  Karine CAVALIER ,  Ines HURTADO DOMINGEZ ,  Salvador ASENSIO

IPC: B01D53/04 ,  B01D53/06 ,  C01D7/18

CPC classification number: B01D53/0462 ,  B01D53/06 ,  B01D2257/504 ,  B01D2259/40005 ,  C01D7/18 ,  Y02C10/08 ,  Y02P20/152

Abstract: Process wherein a low CO2 content process gas generated by an ammonia-soda process unit or a refined sodium bicarbonate unit is enriched by using a Temperature Swing Adsorption CO2 concentration module into a CO2 enriched gas whose CO2 content is increased by at least +10% by volume on dry gas basis relative to the process gas, and which is subsequently recycled to the ammonia-soda process unit or optionally to the refined sodium bicarbonate unit, in order: to produce sodium carbonate, or sodium bicarbonate, or to carbonate at least part of effluent from the unit for producing sodium carbonate or bicarbonate. The TSA CO2 concentration module comprises a stator and a rotor connected to the stator and rotatable relatively to the stator about a rotational axis, the rotor comprising a plurality of sectors, each sector containing a separation device to separate at least part of the CO2 from the process gas which is led into the separation device, and each sector being fluidically connected with at least one rotary active valve.

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。