VERFAHREN ZUR HERSTELLUNG VON CHLOR AUS HCI
    31.
    发明公开
    VERFAHREN ZUR HERSTELLUNG VON CHLOR AUS HCI 有权
    用于生产氯FROM HCI

    公开(公告)号:EP2445831A1

    公开(公告)日:2012-05-02

    申请号:EP10725697.6

    申请日:2010-06-17

    Applicant: BASF SE

    CPC classification number: C01B7/04

    Abstract: The invention relates to a method for producing chlorine by the oxidation of hydrogen chloride with oxygen in a fluidized bed reactor in the presence of a particulate catalyst, the reaction heat produced by the exothermic hydrogen chloride oxidation being carried away by water which circulates in the tubes of a shell-and-tube heat exchanger. The method comprises the following steps: (i) heating the fluidized bed reactor to an operating temperature in the range of 350 to 420°C in a heating phase and (ii) reacting the hydrogen chloride with oxygen at the operating temperature in an operating phase. The method is characterized in that (i-1) the fluidized bed reactor is heated to a temperature below the operating temperature in a first heating phase, and (i-2) hydrogen chloride and oxygen are fed to the fluidized bed reactor and reacted in a second heating phase, the fluidized bed reactor being heated to the operating temperature by the reaction heat produced by the exothermic hydrogen chloride oxidation.

    VERFAHREN ZUR HERSTELLUNG VON CHLOR
    32.
    发明授权
    VERFAHREN ZUR HERSTELLUNG VON CHLOR 有权
    用于生产氯

    公开(公告)号:EP1866239B1

    公开(公告)日:2012-01-18

    申请号:EP06743192.4

    申请日:2006-02-20

    Applicant: BASF SE

    CPC classification number: C01B7/075 C01B7/04 C01B7/0743

    Abstract: The invention concerns a method for producing chlorine and a hydrochloric gas including the following steps: a) supplying via a stream containing hydrochloric gas (a1) and a stream containing oxygen (a2) an oxidation zone and a hydrochloric gas catalytic oxidation with chlorine, a stream of gaseous product (a3) containing chlorine, water, oxygen, carbon dioxide, and the inert gases obtained; b) cooling the stream of gaseous products (a3) and separating the water from the hydrochloric gas in the form of hydrochloric acid, a gas stream (b) containing chlorine, water, oxygen, carbon dioxide, and the inert gases still remaining; c) optionally drying the gas stream (b), and obtaining a gas stream (c) substantially water-free, containing chlorine, oxygen, carbon dioxide and inert gases; d) liquefying at least partly the gas stream (c) and a return stream (f1) rich in chlorine, containing chlorine, oxygen, carbon dioxide through thickening and cooling, a partly liquefied stream (d) being preserved; e) gas-liquid separation of the stream (d) into a gas stream (e1) containing chlorine, oxygen, carbon dioxide, and inert gases and into a liquid stream (e2) containing chlorine, oxygen, and carbon dioxide; f) introducing at least part of the gas stream (e1) into a unit with membrane and separating a return stream (f1) rich in chlorine and a gas flow (f2) poor in chlorine, containing chlorine, oxygen, carbon dioxide, via a separation by the membrane and reintroducing the return flux (f1) rich in chlorine in step d); g) separating the liquid stream (e2) by distillation into a stream of chlorine (g1) and a stream (g2) comprising substantially oxygen and carbon dioxide.

    VERFAHREN ZUR WIEDERGEWINNUNG VON RUTHENIUM AUS GEBRAUCHTEN RUTHENIUMOXIDHALTIGEN KATALYSATOREN
    35.
    发明公开
    VERFAHREN ZUR WIEDERGEWINNUNG VON RUTHENIUM AUS GEBRAUCHTEN RUTHENIUMOXIDHALTIGEN KATALYSATOREN 有权
    PROCESS FOR钌的从用于氧化钌催化剂RECOVERY

    公开(公告)号:EP2391740A2

    公开(公告)日:2011-12-07

    申请号:EP09801713.0

    申请日:2009-12-28

    Applicant: BASF SE

    Abstract: The invention relates to a method for recovering ruthenium from a spent ruthenium-containing catalyst which contains ruthenium in the form of ruthenium oxide on a support material that is poorly soluble in mineral acid. Said method comprises the following steps: a) the catalyst containing ruthenium oxide is reduced in a gas stream containing hydrogen chloride and an optional inert gas at a temperature ranging from 300 to 500°C; b) the catalyst that has been reduced in step a) and contains metallic ruthenium on the poorly soluble support material is treated with hydrochloric acid in the presence of a gas containing oxygen such that the metallic ruthenium on the support is dissolved in the form of ruthenium(III) chloride and is recovered in the form of aqueous ruthenium(III) chloride solution; c) if necessary, the ruthenium(III) chloride solution obtained in step b) is further processed.

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