公开(公告)号：US20170080401A1

公开(公告)日：2017-03-23

申请号：US15311396

申请日：2015-05-18

Applicant: SOLVAY SA

Inventor： Patrick PERRIN ,  Olivier Jacques F.J.G. BODSON ,  Thierry DELPLANCHE ,  Dirk BREUGELMANS

IPC: B01J20/04 ,  C02F1/28 ,  B01J20/28 ,  C01B25/32 ,  B01J20/30

Abstract: A process for producing a calcium phosphate reactant, according to which: in a first step, use is made of a source of calcium and a source of phosphate ions in water, in a molar ratio that is adjusted so as to obtain a Ca/P molar ratio of between 0.5 and 1.6, and the source of calcium is reacted with the phosphate ions at a pH of between 2 and 8, in order to obtain a suspension (A) of calcium phosphate, and in a second step, added to the suspension (A) are an alkaline compound comprising hydroxide ions in order to set a pH of more than 8 and an additional source of calcium in order to obtain a suspension (B) of calcium phosphate reactant having a Ca/P molar ratio of more than 1.6.A calcium phosphate reactant obtainable by such a process.

公开(公告)号：US20200330955A1

公开(公告)日：2020-10-22

申请号：US16920796

申请日：2020-07-06

Applicant: SOLVAY SA

Inventor： Patrick PERRIN ,  Olivier Jacques F.J.G. BODSON ,  Thierry DELPLANCHE ,  Dirk BREUGELMANS

IPC: B01J20/04 ,  B01J20/28 ,  C01B25/32 ,  C02F1/28 ,  B01J20/30

Abstract: A process for producing a calcium phosphate reactant, according to which: in a first step, use is made of a source of calcium and a source of phosphate ions in water, in a molar ratio that is adjusted so as to obtain a Ca/P molar ratio of between 0.5 and 1.6, and the source of calcium is reacted with the phosphate ions at a pH of between 2 and 8, in order to obtain a suspension (A) of calcium phosphate, and in a second step, added to the suspension (A) are an alkaline compound comprising hydroxide ions in order to set a pH of more than 8 and an additional source of calcium in order to obtain a suspension (B) of calcium phosphate reactant having a Ca/P molar ratio of more than 1.6. A calcium phosphate reactant obtainable by such a process.

公开(公告)号：US20180050919A1

公开(公告)日：2018-02-22

申请号：US15554381

申请日：2016-03-02

Applicant: SOLVAY SA

Inventor： Thierry DELPLANCHE ,  Marc THIJSSEN ,  Dirk BREUGELMANS

IPC: C01D3/08 ,  C01D7/18 ,  C01F11/24 ,  B01D21/32 ,  B01F17/00

CPC classification number: C01D3/08 ,  B01D21/32 ,  B01F17/0092 ,  C01D3/04 ,  C01D3/16 ,  C01D7/00 ,  C01D7/18 ,  C01F11/24

Abstract: A process for manufacturing an aqueous sodium chloride solution and the use of such solution for the manufacturing of crude sodium bicarbonate from SOLVAY ammonia process or for the manufacturing of soda ash, comprising the steps of: a) dispersing a first solid material comprising sodium chloride, sodium carbonate, and sodium sulfate, and a second solid material comprising calcium chloride in an aqueous liquid to produce an aqueous medium; b) subjecting the aqueous medium to clarification to produce a clarified aqueous medium; and c) recovering the clarified aqueous medium as aqueous sodium chloride solution; wherein a weight L/S ratio between the weight of the aqueous liquid used to produce the aqueous medium and the total weight of the first solid material and the second solid material is in the range of from 0.7 to 3.5.

公开(公告)号：US20180169573A1

公开(公告)日：2018-06-21

申请号：US15578865

申请日：2016-06-03

Applicant: SOLVAY SA

Inventor： Thierry DELPLANCHE ,  Olivier BODSON ,  Dirk BREUGELMANS ,  Patrick PERRIN ,  Jean-Pascal BALLAND

IPC: B01D53/34 ,  B01J20/04 ,  B01D53/44 ,  B01D53/64 ,  B01D53/80 ,  B01D53/46 ,  B01D53/83 ,  B01D39/06 ,  B01D53/72 ,  B01D53/75

CPC classification number: B01D53/346 ,  B01D39/06 ,  B01D53/44 ,  B01D53/46 ,  B01D53/64 ,  B01D53/72 ,  B01D53/75 ,  B01D53/80 ,  B01D53/83 ,  B01D2239/0208 ,  B01D2251/304 ,  B01D2251/404 ,  B01D2251/512 ,  B01D2251/60 ,  B01D2251/606 ,  B01D2251/61 ,  B01D2253/102 ,  B01D2253/112 ,  B01D2253/306 ,  B01D2257/2045 ,  B01D2257/2047 ,  B01D2257/206 ,  B01D2257/302 ,  B01D2257/60 ,  B01D2257/602 ,  B01D2257/7027 ,  B01D2257/708 ,  B01D2258/0283 ,  B01D2258/0291 ,  B01D2259/128 ,  B01J20/041 ,  B01J20/043 ,  B01J20/048

Abstract: Process for treating a gas contaminated by at least one element selected from the group consisting of heavy metals, organic compounds, and combinations thereof, wherein a calcium-phosphate reactant (reagent) particle comprising apatite is brought into contact with the contaminated gas at a temperature of at least 30° C. and preferably at most 1100° C. The metal(s) and/or organic compound(s) to be removed from the contaminated gas may be selected among the list of: Al, Ag, As, Ba, Be, Bi, Ce, Co, Cd, Cu, Cr, Fe, Hf, Hg, La, Li, Mg, Mn, Mo, Ni, Pb, Pd, Rb, Sb, Se, Sn, Sr, Th, Ti, U, V, Y, Zn, Zr, VOC, aromatic compounds, PAHs, dioxins, furans, or any mixture thereof. In such process, an alkaline compound particle comprising sodium bicarbonate, sodium carbonate, sodium sesquicarbonate (trona), quick lime, hydrated lime, lime stone or combinations thereof, may be further brought into contact with the contaminated gas.