Process for the production of sulphuric acid
    141.
    发明公开
    Process for the production of sulphuric acid 有权
    一种用于生产硫酸的方法

    公开(公告)号:EP2163515A3

    公开(公告)日:2011-03-30

    申请号:EP09009857.5

    申请日:2009-07-30

    Inventor: Schoubye, Peter

    CPC classification number: C01B17/7655 C01B17/775

    Abstract: Process for the production of concentrated sulphuric acid and oleum from feed gases with up to 70 % SO 2 + SO 3 (SO x ) and a content of H 2 O corresponding to H 2 O/SO 3 molar ratios up to 1.6, particularly in the range of 0.5 to 1.6 upstream an intermediate sulphuric acid condenser comprising an air recycling loop with water addition. The process of the invention minimizes power consumption of the sulphuric acid plant by reducing the consumption of cooling water and obtaining maximum possible recovery of the heat liberated in the process for production of high pressure steam for power production. Up to 99.95% of the SO x in the feed gas can be recovered as typically 98.5-99.5 wt% concentrated sulphuric acid and/or oleum with up to 25 wt% SO 3 .

    Process and reactor for the thermoneutral conversion of ethanol to acetic acid
    143.
    发明公开
    Process and reactor for the thermoneutral conversion of ethanol to acetic acid 审中-公开
    伊斯法罕和Reaktor zurwärmeneutralenUmwandlung eines Ethanols inEssigsäure

    公开(公告)号:EP2194036A1

    公开(公告)日:2010-06-09

    申请号:EP09013879.3

    申请日:2009-11-05

    CPC classification number: C07C45/38 B01J8/04 C07C51/235 C07C47/06 C07C53/08

    Abstract: Process for the production of acetic acid comprising the steps of:
    (a) passing a feed stream containing ethanol and water together with a predetermined feed rate of an oxygen containing atmosphere in presence of one or more catalysts being active in simultaneous non-oxidative and oxidative conversion of ethanol to a product stream with acetic acid;
    (b) recovering from the product stream a stream of acetic acid;
    (c) optionally recovering reactive derivatives of acetic acid and recycling these to step (a).
    A reactor for use in the process comprises a first and at least a second fixed catalyst bed with a catalyst being active in simultaneous non-oxidative and oxidative conversion of ethanol to acetic acid;
    inlet means for a fed stream comprising ethanol, water and a first portion of an oxygen containing atmosphere to the first catalyst bed;
    between the first and at least second catalyst bed inlet means for a second portion of the oxygen containing atmosphere and means for distributing and mixing the second portion of the oxygen containing atmosphere into an effluent of partly converted feed stream from the first catalyst bed; and
    means for passing the partly converted feed stream and admixed with the oxygen containing atmosphere into the at least second catalyst bed.

    Abstract translation: 制备乙酸的方法包括以下步骤:(a)在一种或多种催化剂的存在下,将含有乙醇和水的进料流与含氧气氛的预定进料速率一起通过,同时具有非氧化和氧化性 用乙酸将乙醇转化成产物流; (b)从产物流中回收乙酸流; (c)任选地回收乙酸的活性衍生物并将其再循环到步骤(a)。 用于该方法的反应器包括第一和至少第二固定催化剂床,催化剂在乙醇同时不氧化和氧化转化为乙酸的同时具有活性; 用于包含乙醇,水和第一部分含氧气氛的进料流的入口装置到第一催化剂床; 在用于第二部分含氧气氛的第一和至少第二催化剂床入口装置之间,以及用于将第二部分含氧气氛分配和混合到来自第一催化剂床的部分转化的进料流的流出物的装置; 以及用于使部分转化的进料流通过并与含氧气氛混合进入至少第二催化剂床的装置。

    PROCESS FOR THE PREPARATION OF DIMETHYL ETHER
    144.
    发明公开
    PROCESS FOR THE PREPARATION OF DIMETHYL ETHER 审中-公开
    用于生产二甲醚

    公开(公告)号:EP2176206A1

    公开(公告)日:2010-04-21

    申请号:EP08773948.8

    申请日:2008-07-10

    CPC classification number: C07C41/01 C07C43/043

    Abstract: Process for the preparation of dimethyl ether by catalytic conversion of synthesis gas to dimethyl ether comprising contacting a stream of synthesis gas comprising carbon dioxide with one or more catalysts active in the formation of methanol and the dehydration of methanol to dimethyl ether, to form a product mixture comprising the components dimethyl ether, carbon dioxide and unconverted synthesis gas, washing the product mixture comprising carbon dioxide and unconverted synthesis gas in a first scrubbing zone with a first solvent rich in dimethyl ether and subsequently washing the effluent from the first scrubbing zone in a second scrubbing zone with a second solvent rich in methanol to form a vapour stream comprising unconverted synthesis gas stream with reduced content of carbon dioxide, transferring the vapour stream comprising unconverted synthesis gas stream with reduced carbon dioxide content for further processing to dimethyl ether.

    Method for purification of an exhaust gas from a diesel engine
    145.
    发明公开
    Method for purification of an exhaust gas from a diesel engine 有权
    伊斯法罕zum Reinigen des Abgases eines Dieselmotors

    公开(公告)号:EP2112341A3

    公开(公告)日:2010-02-17

    申请号:EP09005153.3

    申请日:2009-04-08

    Inventor: Gekas, Ioannis

    Abstract: The invention provides a method for removing impurities in exhaust gas from a diesel engine, where the impurities comprise nitrogen oxides, carbon monoxide, particulate matter and incompletely combusted hydrocarbons. The method comprises the steps of injection of a reductant comprising urea or ammonia into the exhaust gas from the engine, selective catalytic reduction of the nitrogen oxides in the exhaust gas by the reductant, and intermittent injection of a hydrocarbon into this effluent. The succeeding steps are oxidation of carbon monoxide, particulate matter, incompletely combusted hydrocarbons and injected hydrocarbon to carbon dioxide and water, and in selectively oxidising possible excess of reductant to free nitrogen, and finally filtration of the effluent by passing the gas through a catalysed filter, wherein the remaining particulate matter is retained in the filter, and wherein the carbon monoxide, particulate matter and hydrocarbons are oxidised to carbon dioxide and water, and the reductant is selectively oxidised to nitrogen, creating a purified exhaust gas.

    Abstract translation: 本发明提供一种从柴油发动机中除去废气中的杂质的方法,其中杂质包括氮氧化物,一氧化碳,颗粒物和不完全燃烧的烃。 该方法包括以下步骤:将来自发动机的废气中含有尿素或氨的还原剂注入,通过还原剂选择性地催化还原废气中的氮氧化物,并将烃间歇地注入该流出物。 后续步骤是将一氧化碳,颗粒物质,不完全燃烧的烃和注入的烃氧化成二氧化碳和水,以及选择性氧化可能过量的还原剂到游离氮,最后通过使气体通过催化过滤器过滤流出物 其中剩余的颗粒物质保留在过滤器中,并且其中一氧化碳,颗粒物质和碳氢化合物被氧化成二氧化碳和水,并且还原剂被选择性地氧化成氮气,产生净化的废气。

    Process for the recovery of sulfuric acid
    150.
    发明公开
    Process for the recovery of sulfuric acid 审中-公开
    Verfahren zur Wiedergewinnung vonSchwefelsäure

    公开(公告)号:EP1864947A2

    公开(公告)日:2007-12-12

    申请号:EP07010651.3

    申请日:2007-05-29

    CPC classification number: C01B17/90 C01B17/76

    Abstract: Process for the recovery of sulfuric acid comprising:
    (a) contacting a stream containing sulfuric acid vapor and/or sulfur trioxide in an absorption stage with a ionic liquid absorbent,
    (b) withdrawing a gas substantially free of sulfuric acid vapor and/or sulfur trioxide from said absorption stage,
    (c) withdrawing a stream comprising the ionic liquid absorbent from said absorption stage, in which said ionic liquid absorbent contains sulfuric acid,
    (d) recovering sulfuric acid from said ionic liquid absorbent by passing the stream of step (c) through a separation stage,
    (e) withdrawing from the separation stage (d) a stream rich in sulfuric acid,
    (f) withdrawing from the separating step (d) a ionic liquid absorbent stream in which said ionic liquid absorbent contains sulfuric acid and returning said stream to the absorption step (a).

    Abstract translation: 回收硫酸的方法包括:(a)在吸收阶段将含有硫酸蒸汽和/或三氧化硫的物流与离子液体吸收剂接触,(b)取出基本上不含硫酸蒸气和/或硫的气体 (c)从所述吸收阶段抽出包含离子液体吸收剂的物流,其中所述离子液体吸收剂含有硫酸,(d)通过使所述离子液体吸收剂流通过步骤 c)通过分离阶段,(e)从分离阶段(d)中排出富含硫酸的物流,(f)从分离步骤(d)中取出离子液体吸收剂流,其中所述离子液体吸收剂含有硫酸 并将所述物流返回到吸收步骤(a)。

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