EP4662178A1 - Procédé de séparation de solvant de courants de déchets - Google Patents

Procédé de séparation de solvant de courants de déchets

Info

Publication number
EP4662178A1
EP4662178A1 EP24708665.5A EP24708665A EP4662178A1 EP 4662178 A1 EP4662178 A1 EP 4662178A1 EP 24708665 A EP24708665 A EP 24708665A EP 4662178 A1 EP4662178 A1 EP 4662178A1
Authority
EP
European Patent Office
Prior art keywords
waste stream
additive
solvent
alkyl
distillation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP24708665.5A
Other languages
German (de)
English (en)
Inventor
Nathan Andrew EBERHARDT
Nick Sherman
Jonathan Isaac POLLACK
Demetrius Michos
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WR Grace and Co Conn
WR Grace and Co
Original Assignee
WR Grace and Co Conn
WR Grace and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by WR Grace and Co Conn, WR Grace and Co filed Critical WR Grace and Co Conn
Publication of EP4662178A1 publication Critical patent/EP4662178A1/fr
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/009—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping in combination with chemical reactions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/14—Fractional distillation or use of a fractionation or rectification column
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/34—Organic compounds containing oxygen
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/36—Organic compounds containing halogen
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/38—Organic compounds containing nitrogen
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/40—Organic compounds containing sulfur
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32

Definitions

  • a method of concentrating a waste stream includes adding an additive to the waste stream to form an additive mixture, where the waste stream comprises a process solvent, titanium tetrachloride, titanium alkoxides, an organic compound, and/or degradation products thereof; and concentrating the additive mixture to form a concentrated waste stream having a lower volume compared to the waste stream.
  • Methods for concentrating the additive mixture can include, but are not limited to, evaporating the process solvent from the additive mixture or distilling the additive mixture.
  • a method of separating solvents from a waste stream includes adding an additive to the waste stream to form an additive mixture, where the waste stream comprises a process solvent, titanium tetrachloride, titanium alkoxides, an organic compound, and/or degradation products thereof; and separating the process solvent from the additive mixture.
  • the separated process solvent may have an increased purity compared to the waste stream.
  • An exemplary method for separating the process solvent from the additive mixture may be distillation of the additive mixture.
  • a method of recovering solvents from a waste stream includes adding the waste stream comprising a process solvent, titanium tetrachloride, titanium alkoxides, an organic compound, and/or degradation products thereof to a distillation apparatus; adding an additive to the distillation apparatus to form a distillation mixture; and distilling the distillation mixture to recover the solvent exhibiting an increased purity compared to the waste stream.
  • the pH of the waste stream is acidic.
  • the method(s) further comprises neutralizing the waste stream with a neutralizing agent before adding the additive.
  • the method further includes neutralizing the waste stream during addition of the additive.
  • the additive neutralizes the waste stream.
  • the waste stream is partially neutralized. In other embodiments, the waste stream is fully neutralized.
  • the additive is added to the waste stream as an aqueous solution. In other embodiments, the additive is added to the waste stream as a suspension in water. In some embodiments, the waste stream is hydrolyzed as a result of the addition of the additive as an aqueous solution or as a suspension in water.
  • the organic compound is an alcohol, an ester, a ketone, an ether, an amide, an amine, a carbonate, a carbamide, an alkyl urea, an imine, a sulfide, a thioester, or a combination of two or more thereof.
  • the organic compound may be a catechol, a diol, a multidentate alcohol such as glycol, or a diol diester.
  • the organic compound is an internal donor.
  • the waste stream further comprises an internal donor decomposition product. The internal donor decomposition product may initially be present in the waste stream, or the internal donor decomposition product may be formed from neutralization or hydrolysis of the waste stream.
  • the additive comprises a metal salt.
  • the additive comprises a metal hydroxide salt, a metal chloride salt, a metal sulfate salt, or a combination of two or more thereof.
  • the additive comprises a metal salt having a metal source with a valency of 1 or greater. Examples of a metal source include, but are not limited to, Na + , Mg 2+ , Ca 2+ , Fe 2+ , Fe 3+ , Ni 2+ , or Cu 2+ .
  • the additive comprises a metal salt and another additive selected from silica, silicone oil, a silica containing material, and a combination of two or more thereof.
  • the additive includes silica, silicone oil, a silica containing material, or a combination of two or more thereof.
  • the additive comprises a compound comprising Si and O.
  • the additive comprises SiR'a(OR 2 )4-a, where a is 0, 1, 2, or 3.
  • the additive reduces waste stream volume during distillation, and the additive prevents waste stream components from adhering to the distillation apparatus.
  • waste streams that include a process solvent, titanium tetrachloride, titanium alkoxides, organic compounds, and/or degradation products thereof are difficult at high concentrations.
  • the present disclosure relates to the addition of an additive(s) to the waste streams to separate the solvent from the mixture, to recover the solvent that exhibits an increased purity compared to the waste stream.
  • the present disclosure also relates to methods of concentrating waste streams, leading to the recovery of process solvents.
  • the waste stream is produced from the generation of a solid catalyst component comprising magnesium, titanium, and an organic compound.
  • the solid catalyst component is generated from the creation or dissolution of a magnesium chloride species.
  • the magnesium chloride species is treated with a titanium species such as TiCk.
  • the species is treated with an organic compound containing an ester, an ether, an amide, a carbonate, an amine, a carbamide, or a combination of two or more thereof.
  • the process solvent may be generated from the separation of solvent and soluble components from the generated species.
  • organic compounds include, but are not limited to, those shown below:
  • R 3 , R 4 , R 5 , R 6 , R 7 , and R 8 are each independently H, F, Cl, Br, I, a heteroatom, C1-C20 alkyl, C5-C20 cycloalkyl, C5-C20 cycloalkylalkyl, C6-C20 aryl, C6-C20 alkylaryl, heterocyclyl, heterocyclylalkyl, heteroaryl, or heteroarylalkyl;
  • R 10 -R 13 are each independently selected from H, a heteroatom, C1-C20 alkyl, C5-C20 cycloalkyl, C5-C20 cycloalkylalkyl, C6-C20 aryl, C6-C20 aralkyl, alkylaryl, or an -OR 15 where R 15 is C1-C20 alkyl, C6-C20 aryl, C6-C20 aralkyl, or C6-C20 alkylaryl; R 9 and R 14 are each independently selected from F, Cl, Br, I, C1-C20 alkyl, C5-C20 cycloalkyl, C5-C20 cycloalkylalkyl, C6-C20 aryl, C6-C20 aralkyl, alkylaryl, -OR 16 , or -NR2 17 ; R 16 is C1-C20 alkyl, C6-C20 aryl, or alkylaryl
  • each of R 19 through R 32 is independently H, F, Cl, Br, I, C1-C20 alkyl, C5-C20 cycloalkyl, C5-C20 cycloalkylalkyl, C6-C20 aryl, C6-C20 aralkyl, heterocyclyl, heterocyclylalkyl, heteroaryl, or heteroarylalkyl;
  • each of R 33 through R 38 is independently H, F, Cl, Br, I, NR2 39 , SiR 40 3, Ci- C20 alkyl, C5-C20 cycloalkyl, C5-C20 cycloalkylalkyl, C6-C20 aryl, C6-C20 aralkyl, heterocyclyl, heterocyclylalkyl, heteroaryl, or heteroarylalkyl; q is an integer from 0 to 12; each R 39 is independently selected from H, C1-C20 alkyl, C6-C20 aryl or alkylaryl; and each R 40 is independently C1-C20 alkyl, C5-C20 cycloalkyl, C1-C20 alkoxy, cycloalkylalkyl, C6-C20 aryl, C6-C20 aralkyl, heterocyclyl, heterocyclylalkyl, heteroaryl, or heteroarylalkyl;
  • each of R 41 through R 46 is independently H, F, Cl, Br, I, NR2 47 , SiR 48 3, Ci- C20 alkyl, C5-C20 cycloalkyl, C5-C20 cycloalkylalkyl, C6-C20 aryl, C6-C20 aralkyl, heterocyclyl, heterocyclylalkyl, heteroaryl, or heteroarylalkyl; r is an integer from 0 to 12; each R 47 is independently selected from H, C1-C20 alkyl, C6-C20 aryl or alkylaryl; and each R 48 is independently C1-C20 alkyl, cycloalkyl, C1-C20 alkoxy, cycloalkylalkyl, aryl, aralkyl, heterocyclyl, heterocyclylalkyl, heteroaryl, or heteroarylalkyl;
  • each of R 49 through R 54 is independently H, F, Cl, Br, I, NR2 55 , SiR 56 3, Ci- C20 alkyl, C5-C20 cycloalkyl, C5-C20 cycloalkylalkyl, C6-C20 aryl, C6-C20 aralkyl, heterocyclyl, heterocyclylalkyl, heteroaryl, or heteroarylalkyl; t is an integer from 0 to 12; each R 55 is independently selected from H, C1-C20 alkyl, C6-C20 aryl or alkylaryl; each R 56 is independently C1-C20 alkyl, cycloalkyl, alkoxy, cycloalkylalkyl, C6-C20 aryl, C6-C20 aralkyl, heterocyclyl, heterocyclylalkyl, heteroaryl, or heteroarylalkyl; and each E 1 and E 2 is independently O, S, or NR
  • each of R 58 through R 65 are independently H, F, Cl, Br, I, a heteroatom, Ci- C20 alkyl, C5-C20 cycloalkyl, C5-C20 cycloalkylalkyl, C6-C20 aryl, C6-C20 aralkyl, heterocyclyl, heterocyclylalkyl, heteroaryl, or heteroarylalkyl;
  • each R 66 through R 79 is independently H, F, Cl, Br, I, a heteroatom, C1-C20 alkyl, C5-C20 cycloalkyl, C5-C20 cycloalkylalkyl, C6-C20 aryl, C6-C20 aralkyl, heterocyclyl, heterocyclylalkyl, heteroaryl, or heteroarylalkyl; and each X 3 and X 4 is independently O, S, or NRso, where Rso is H, C1-C20 alkyl, C6-C20 aryl, C6-C20 aralkyl; and
  • R 81 , R 82 , R 83 , R 84 , R 85 , and R 86 are each independently H, F, Cl, Br, I, a heteroatom, C1-C20 alkyl, C5-C20 cycloalkyl, C5-C20 cycloalkylalkyl, C6-C20 aryl, C6-C20 alkylaryl, heterocyclyl, heterocyclylalkyl, heteroaryl, or heteroarylalkyl.
  • the solvent stream is mixed with an aqueous solvent after separation from the solid catalyst components.
  • the aqueous solvent may include a base or other ionic salts.
  • the aqueous solvent including a base is neutral or basic in pH.
  • the waste stream is acidic.
  • the pH of the waste stream may be less than about 7.
  • the waste stream may be neutralized with a neutralization agent before the addition of the additive.
  • the additive neutralizes the waste stream.
  • the additive may be added to the waste stream as a metal hydroxide salt.
  • the waste stream is partially or fully neutralized.
  • the additive may be added to the waste stream as a salt, as an aqueous solution, or as a suspension in water. The addition of the additive as an aqueous solution or as a suspension in water may result in hydrolysis of the waste stream.
  • the waste stream may include a decomposition product of the organic compound.
  • the organic compound is an alcohol, an ester, a ketone, an ether, an amide, an amine, a carbonate, a carbamide, an alkyl urea, an imine, a sulfide, a thioester, or a combination of two or more thereof.
  • the organic compound and/or its decomposition product may be a multidentate compound (i.e., a compound that binds to a metal atom through at least two atoms on the compound).
  • the organic compound may include a diol, such as a catechol or a glycol.
  • the organic compound is an internal donor.
  • the decomposition product may be present in the waste stream before the addition of the additive or before neutralization or hydrolysis of the waste stream. In some embodiments, the decomposition product may be a result of neutralization or hydrolysis of the waste stream.
  • additives examples include, but are not limited to, a metal salt which allows for the separation of solvents from neutralized process solvent water mixtures at higher solvent concentrations.
  • Suitable metal salts for use in the present methods include metal salts having a group 1 metal, a group 2 metal, a transition metal, or a combination of two or more thereof.
  • Other illustrative additives include metal sources with valency of one or greater. Suitable metal sources with valency of one or greater include, but are not limited to, Na + , Mg 2+ , Ca 2+ , Fe 2+ , Fe 3+ , Ni 2+ , or Cu 2+ .
  • the additive may be a metal hydroxide salt, a metal chloride salt, or a metal sulfate salt.
  • the additives include silica, silicone oil, a silica containing material, or a combination of two or more thereof.
  • Another embodiment of the additive includes silica, silicone oil, a silica containing material, or a combination of two or more thereof.
  • silica, silicone oil, and/or silica containing material is added with a metal salt having a metal source with valency of one or greater to aid in the separation of the waste stream.
  • the additive comprises a compound comprising Si and O.
  • the additive comprises SiR'a(OR 2 )4-a, where a is 0, 1, 2, or 3, and R 1 and R 2 may each independently be H, alkyl, or aryl.
  • the additive includes Si, the Si is polymeric.
  • additives prevents the components of the waste stream from adhering to materials commonly used for processing vessels such as glass or steel.
  • the additives described herein prevent components of the waste stream from adhering to the distillation apparatus and/or other components involved with delivery of the waste stream into the distillation apparatus such as mixers, mixer shafts, piping, or columns in the event of process upset. Further, the additive reduces waste stream volume during distillation.
  • Titanium tetrachloride recovery in the presence of select donor species leads to the decomposition of donors to create surfactant species that make separation difficult.
  • Post TiCk recovery process solvent needs removal of decomposition species for TiCh recovery distillation to remain functional.
  • Donor decomposition rich process solvent can be neutralized for additional solvent recovery.
  • R 3 , R 4 , R 5 , R 6 , R 7 , and R 8 are each independently H, F, Cl, Br, I, a heteroatom, C1-C20 alkyl, C5-C20 cycloalkyl, C5-C20 cycloalkylalkyl, C6-C20 aryl, C6-C20 alkylaryl, heterocyclyl, heterocyclylalkyl, heteroaryl, or heteroarylalkyl;
  • R 10 -R 13 are each independently selected from H, a heteroatom, C1-C20 alkyl, C5-C20 cycloalkyl, C5-C20 cycloalkylalkyl, C6-C20 aryl, C6-C20 aralkyl, alkylaryl, or an -OR 15 where R 15 is C1-C20 alkyl, C6-C20 aryl, C6-C20 aralkyl, or C6-C20 alkylaryl; R 9 and R 14 are each independently selected from F, Cl, Br, I, C1-C20 alkyl, C5-C20 cycloalkyl, C5-C20 cycloalkylalkyl, C6-C20 aryl, C6-C20 aralkyl, alkylaryl, -OR 16 , or -NR2 17 ; R 16 is C1-C20 alkyl, C6-C20 aryl, or alkylaryl
  • each of R 19 through R 32 is independently H, F, Cl, Br, I, C1-C20 alkyl, C5-C20 cycloalkyl, C5-C20 cycloalkylalkyl, C6-C20 aryl, C6-C20 aralkyl, heterocyclyl, heterocyclylalkyl, heteroaryl, or heteroarylalkyl;
  • each of R 33 through R 38 is independently H, F, Cl, Br, I, NR2 39 , SiR 40 3, Ci- C20 alkyl, C5-C20 cycloalkyl, C5-C20 cycloalkylalkyl, C6-C20 aryl, C6-C20 aralkyl, heterocyclyl, heterocyclylalkyl, heteroaryl, or heteroarylalkyl; q is an integer from 0 to 12; each R 39 is independently selected from H, C1-C20 alkyl, C6-C20 aryl or alkylaryl; and each R 40 is independently C1-C20 alkyl, C5-C20 cycloalkyl, C1-C20 alkoxy, cycloalkylalkyl, C6-C20 aryl, C6-C20 aralkyl, heterocyclyl, heterocyclylalkyl, heteroaryl, or heteroarylalkyl;
  • each of R 41 through R 46 is independently H, F, Cl, Br, I, NR2 47 , SiR 48 3, Ci- C20 alkyl, C5-C20 cycloalkyl, C5-C20 cycloalkylalkyl, C6-C20 aryl, C6-C20 aralkyl, heterocyclyl, heterocyclylalkyl, heteroaryl, or heteroarylalkyl; r is an integer from 0 to 12; each R 47 is independently selected from H, C1-C20 alkyl, C6-C20 aryl or alkylaryl; and each R 48 is independently C1-C20 alkyl, cycloalkyl, C1-C20 alkoxy, cycloalkylalkyl, aryl, aralkyl, heterocyclyl, heterocyclylalkyl, heteroaryl, or heteroarylalkyl;
  • each of R 49 through R 54 is independently H, F, Cl, Br, I, NR2 55 , SiR 56 3, Ci- C20 alkyl, C5-C20 cycloalkyl, C5-C20 cycloalkylalkyl, C6-C20 aryl, C6-C20 aralkyl, heterocyclyl, heterocyclylalkyl, heteroaryl, or heteroarylalkyl; t is an integer from 0 to 12; each R 55 is independently selected from H, C1-C20 alkyl, C6-C20 aryl or alkylaryl; each R 56 is independently C1-C20 alkyl, cycloalkyl, alkoxy, cycloalkylalkyl, C6-C20 aryl, C6-C20 aralkyl, heterocyclyl, heterocyclylalkyl, heteroaryl, or heteroarylalkyl; and each E 1 and E 2 is independently O, S, or NR
  • each of R 58 through R 65 are independently H, F, Cl, Br, I, a heteroatom, Ci- C20 alkyl, C5-C20 cycloalkyl, C5-C20 cycloalkylalkyl, C6-C20 aryl, C6-C20 aralkyl, heterocyclyl, heterocyclylalkyl, heteroaryl, or heteroarylalkyl;
  • each R 66 through R 79 is independently H, F, Cl, Br, I, a heteroatom, C1-C20 alkyl, C5-C20 cycloalkyl, C5-C20 cycloalkylalkyl, C6-C20 aryl, C6-C20 aralkyl, heterocyclyl, heterocyclylalkyl, heteroaryl, or heteroarylalkyl; and each X 3 and X 4 is independently O, S, or NRso, where Rso is H, C1-C20 alkyl, C6-C20 aryl, C6-C20 aralkyl; and
  • R 81 , R 82 , R 83 , R 84 , R 85 , and R 86 are each independently H, F, Cl, Br, I, a heteroatom, C1-C20 alkyl, C5-C20 cycloalkyl, C5-C20 cycloalkylalkyl, C6-C20 aryl, C6-C20 alkylaryl, heterocyclyl, heterocyclylalkyl, heteroaryl, or heteroarylalkyl.
  • Catalyst compositions including a donor species that leads to difficult separation can be prepared as described, for example, in WO 2023/034334, WO 2022/197491, WO 2010/078494, and/or U.S. Pat. Nos. 7,381,779; 7,491,670; 7,678,868; 7,781,363; 7,989,383;
  • Salt additives reduces the solvent volume during the distillation of neutralized process solvent.
  • Salt additives can include group 2 metal sources of magnesium and calcium ions. The addition of these salts was found to help prevent materials from adhering to equipment in addition to reducing the volume needed for distillation.
  • Table 1 Examples of salt additives.
  • the process solvent may contain one or more organic components or the decomposition products of these organic components.
  • the organic components may be present in the process solvent resulting from the synthesis of the solid catalyst component.
  • a divalent or greater salt can be used so that the neutralization of process solvent does not form problematic surfactant species.
  • the metal source can be added before or during the neutralization, or as a hydroxide source.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Un procédé de récupération de solvant d'un flux de déchets comprend l'ajout du flux de déchets comprenant un solvant de traitement, du tétrachlorure de titane, des alcoxydes de titane, un composé organique et/ou des produits de dégradation de celui-ci dans un appareil de distillation ; l'ajout d'un additif dans l'appareil de distillation pour former un mélange de distillation ; et la distillation du mélange de distillation pour récupérer le solvant présentant une pureté accrue par rapport au flux de déchets.
EP24708665.5A 2023-02-10 2024-02-09 Procédé de séparation de solvant de courants de déchets Pending EP4662178A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202363484422P 2023-02-10 2023-02-10
PCT/US2024/015212 WO2024168274A1 (fr) 2023-02-10 2024-02-09 Procédé de séparation de solvant de courants de déchets

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EP4662178A1 true EP4662178A1 (fr) 2025-12-17

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EP (1) EP4662178A1 (fr)
JP (1) JP2026504551A (fr)
CN (1) CN120936578A (fr)
WO (1) WO2024168274A1 (fr)

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JP2024533176A (ja) 2021-09-02 2024-09-12 ダブリュー・アール・グレース・アンド・カンパニー－コーン 改善された触媒性能を有するプロピレン重合のための触媒成分

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