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1.发明申请公开(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
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.
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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
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.
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Patent Agency Ranking
3.发明申请公开(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
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.
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4.发明申请公开(公告)号：US20190381452A1
公开(公告)日：2019-12-19
申请号：US16464067
申请日：2017-12-07
Applicant: Solvay SA
Inventor： Thierry DELPLANCHE , Antonella GERVASINI
Abstract: A porous material comprises at least 60 wt % of a calcium-deficient hydroxyapatite having a Ca/P molar ratio of less than 1.67, having a specific BET surface area of at least 110 m2/g and a pore volume of at least 0.41 cm3/g, both measured after heat treatment at 120° C. A catalyst composition for catalytic reduction of NOx compounds, comprising an active catalyst component: Cu and/or CuO deposited on the porous material as support. A deNOx process according to which an ammonia source is injected into a combustion waste gas stream containing NOx; and to which the catalyst composition is brought into contact with the waste gas stream at a temperature of at least 100° C. and preferably at most 600° C. to carry out, in the presence of O2, a reduction by NH3 of at least a portion of the NOx.
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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
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.
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公开(公告)号：US20190381453A1
公开(公告)日：2019-12-19
申请号：US16464069
申请日：2017-12-07
Applicant: Solvay SA
Inventor： Thierry DELPLANCHE , Antonella GERVASINI
Abstract: Process for treating a combustion waste gas stream containing NOx and contaminants such as heavy metals and/or acid gases, e.g., halogens, SOx, comprising: injecting an alkali sorbent, into the waste gas stream; removing some contaminants with the alkali sorbent from the waste gas stream; injecting an ammonia source into the gas stream; injecting a deNOx catalyst into the gas stream at a temperature of 100° C. to preferably not more than 600° C. to reduce with NH3, in the presence of O2, some NOx to N2 and water in the gas stream, wherein the deNOx catalyst comprises copper and/or copper oxide deposited on a porous support comprising at least 60 wt % of a calcium-deficient hydroxyapatite having a Ca/P of less than 1.67. A blend comprising the alkali sorbent and the deNOx catalyst may be formed to inject them together into the waste gas stream. The ammonia source and the deNOx catalyst are preferably injected simultaneously. Alternatively, the ammonia source may be included in the alkali sorbent and/or the deNOx catalyst.
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7.发明申请公开(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.
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