POLYAMINE PHOSPHORUS DENDRIMER MATERIALS FOR METAL SEQUESTRATION

    公开(公告)号:EP4321247A2

    公开(公告)日:2024-02-14

    申请号:EP23211002.3

    申请日:2020-01-16

    IPC分类号: B01J20/34

    摘要: The present disclosure provides novel solid sorbents synthesized by the reaction of polyamines with polyaldehyde phosphorus dendrimer ( P -dendrimer) compounds for metal sequestration. The sorbents are highly stable and exhibit desirable thermodynamics and reaction kinetics with a wide variety of metals including heavy metals and rare earth elements. The sorbents can be easily regenerated for repeated use to extract metals from an aqueous solution. The materials are stable to aqueous and organic media, as well as strong acid and bases. The sorbents maintain full capacity over many cycles of use.

    INTEGRATED METHOD FOR REMOVING ACID GAS FROM A GAS STREAM

    公开(公告)号:EP3871755A1

    公开(公告)日:2021-09-01

    申请号:EP21156390.3

    申请日:2015-10-20

    IPC分类号: B01D53/48 B01D53/62 B01D53/50

    摘要: This invention relates to a method for removing acid gases from a gas stream, the method comprising: flowing a feed gas into a desulfurization unit including a fluidized-bed reactor to remove a substantial fraction of a sulfur compound from the feed gas, wherein the desulfurization unit produces a desulfurized gas, and wherein flowing the feed gas into the desulfurization unit comprises flowing the feed gas into contact with a sorbent; and flowing the desulfurized gas into a CO 2 removal unit to selectively remove a substantial fraction of CO 2 from the desulfurized gas, wherein flowing the feed gas into the desulfurization unit is done at a temperature range of 204 °C or greater; characterised in that the method comprises flowing the desulfurized gas, before CO 2 removal, into contact with steam in a water-gas-shift unit in the presence of a shift catalyst to produce carbon dioxide (CO 2 ) and hydrogen gas (H 2 ), and in that the sorbent is selected from the group consisting of: a metal oxide, zinc oxide, copper oxide, iron oxide, vanadium oxide, manganese oxide, stannous oxide, nickel oxide, a metal titanate, zinc titanate, a metal ferrite, zinc ferrite, copper ferrite, and a combination of two or more of the foregoing, wherein the sorbent comprises a support selected from the group consisting of: alumina (Al 2 O 3 ), silicon dioxide (SiO 2 ), titanium dioxide (TiO 2 ), a zeolite, and a combination of two or more of the foregoing, and wherein the sorbent is regenerable.