Process for removing sulfur oxides from a gas by means of an absorption
mass regenerable by reaction with elemental sulfur
    3.
    发明授权
    Process for removing sulfur oxides from a gas by means of an absorption mass regenerable by reaction with elemental sulfur 失效
    通过与元素硫反应可再生的吸收物质从气体中除去硫氧化物的方法

    公开(公告)号:US4855117A

    公开(公告)日:1989-08-08

    申请号:US160973

    申请日:1988-02-26

    IPC分类号: B01D53/50

    CPC分类号: B01D53/508

    摘要: The invention relates to a process for removing sulfur oxides, particularly sulfur dioxide, contained in gases such as industrial fumes, characterized in that the gas is contacted with a solid absorbent containing magnesium oxide, in such conditions that sulfur oxides are fixed mainly as magnesium sulfate and then the used solid absorbent is contacted with a gas stream containing elemental sulfur in such conditions that magnesium oxide is regenerated with the production of an effluent of sulfur dioxide containing gas.

    摘要翻译: 本发明涉及一种除去气体如工业烟气中所含的硫氧化物,特别是二氧化硫的方法,其特征在于,气体与含氧化镁的固体吸收剂接触,硫氧化物主要以硫酸镁的形式固定 然后将所使用的固体吸收剂与含有元素硫的气流接触,使得氧化镁在产生含二氧化硫气体的流出物的条件下再生。

    Process for purifying a gas containing hydrogen sulfide and carbon
dioxide and apparatus therefor
    5.
    发明授权
    Process for purifying a gas containing hydrogen sulfide and carbon dioxide and apparatus therefor 失效
    用于净化含有硫化氢和二氧化碳的气体的方法及其设备

    公开(公告)号:US4421725A

    公开(公告)日:1983-12-20

    申请号:US281798

    申请日:1981-07-09

    CPC分类号: B01D53/18

    摘要: Process for separating H.sub.2 S from CO.sub.2, both contained in a treated gas, wherein said gas is contacted with a solution which selectively absorbs H.sub.2 S, wherefrom H.sub.2 S is separated in a regeneration zone, CO.sub.2 being released, said contact step being effected in a contact apparatus comprising 1 to 10 stages each formed of parallel vertical tubes whose bottom portion is provided with injection means of the cyclonic type imparting to the supplied gas and liquid a swirling ascending motion.

    摘要翻译: 二氧化碳的分离方法,二者都包含在处理气体中,其中所述气体与选择性吸收H 2 S的溶液接触,其中H 2 S在再生区域中被分离,CO 2被释放,所述接触步骤在接触装置中进行,包括 1至10级,每个级别由平行的垂直管形成,其底部设置有向所供应气体和液体赋予旋转上升运动的旋风式喷射装置。

    Process for purifying a sulfur dioxide containing gas by washing with an
ammonia aqueous solution
    7.
    发明授权
    Process for purifying a sulfur dioxide containing gas by washing with an ammonia aqueous solution 失效
    通过用氨水洗涤来净化含二氧化硫的气体的方法

    公开(公告)号:US4180550A

    公开(公告)日:1979-12-25

    申请号:US835085

    申请日:1977-09-20

    CPC分类号: C01B17/60 B01D53/501

    摘要: Process for purifying a sulfur dioxide containing gas, by washing with an ammonia aqueous solution, comprising the following steps:(a) contacting a sulfur dioxide containing gas with ammonia and/or ammonium sulfite in the presence of water, to form a solution containing ammonium bisulfite and/or sulfite;(b) reacting at least a portion of the solution obtained in step (a) with ammonium bisulfate, so as to decompose the ammonium bisulfite and sulfite and to obtain ammonium sulfate as an aqueous solution and gaseous sulfur dioxide;(c) recovering the sulfur dioxide;(d) heating the aqueous solution obtained in step (b) for vaporizing at least a portion of the water;(e) heating the product from step (d) to convert the ammonium sulfate to ammonium bisulfate and gaseous ammonia;(f) separating the gaseous ammonia obtained in step (e) and feeding it to step (a) either as such or as ammonium sulfite and,(g) feeding to step (b) the ammonium bisulfate obtained in step (e) either as such or after dissolution in water, wherein, in order to avoid an accumulation of ammonium sulfate and/or bisulfate, due the undesirable formation of ammonium sulfate, at least a portion of the ammonium sulfate and/or bisulfate from step (e) is heated with a molybdenum and/or tungsten compound for converting a portion of said ammonium sulfate and/or bisulfate to sulfur dioxide and ammonia, which are fed back to step (a).

    摘要翻译: 通过用氨水洗涤来净化含二氧化硫气体的方法,包括以下步骤:(a)在水存在下使含二氧化硫的气体与氨和/或亚硫酸铵接触,形成含有铵的溶液 亚硫酸氢盐和/或亚硫酸盐; (b)使步骤(a)中获得的溶液的至少一部分与硫酸氢铵反应,以分解亚硫酸氢铵和亚硫酸盐,得到作为水溶液和气态二氧化硫的硫酸铵; (c)回收二氧化硫; (d)加热步骤(b)中获得的水溶液以使至少一部分水蒸发; (e)加热来自步骤(d)的产物以将硫酸铵转化为硫酸氢铵和气态氨; (f)分离步骤(e)中获得的气态氨,并将其进料到步骤(a)中,或者以亚硫酸铵形式进料到步骤(a),和(g)将步骤(b)中得到的硫酸氢铵 这样或之后溶解在水中,其中为了避免硫酸铵和/或硫酸氢盐的积聚,由于不期望的形成硫酸铵,将来自步骤(e)的至少一部分硫酸铵和/或硫酸氢盐加热 与用于将一部分所述硫酸铵和/或硫酸氢盐转化成二氧化硫和氨的钼和/或钨化合物反馈到步骤(a)。

    Process for converting heavy petroleum residues to hydrogen and gaseous
distillable hydrocarbons
    8.
    发明授权
    Process for converting heavy petroleum residues to hydrogen and gaseous distillable hydrocarbons 失效
    将重质石油残渣转化为氢气和气态可馏分烃的方法

    公开(公告)号:US4609456A

    公开(公告)日:1986-09-02

    申请号:US699540

    申请日:1985-02-08

    CPC分类号: C10G47/26 C10G47/04

    摘要: The invention concerns a process for converting heavy petroleum residues to hydrogen and to gaseous and distillable hydrocarbons, comprising the association of a step of hydropyrolysis (inside tube 3) with a step of catalytic steam-gasification of the formed coke (outside tube 3), characterized in that the hydropyrolysis step is performed in the presence of a solid supporting a carbon gasification catalyst circulating between the hydropyrolysis zone and the coke steam-gasification zone, said steam-gasification being performed in the absence of oxygen.The petroleum residue, hydrogen and steam are introduced respectively through lines 5, 6 and 7.The products are withdrawn through line 10. Heat may be supplied by the radiating tube 4.

    摘要翻译: 本发明涉及将重质石油残余物转化为氢气和气态和可馏出烃的方法,其包括加氢热解步骤(管3内)与成形焦炭(外管3)的催化蒸汽气化步骤的关联, 其特征在于,所述加氢热解步骤在支持在所述加氢热解区和所述焦炭蒸汽 - 气化区之间循环的碳气化催化剂的固体存在下进行,所述蒸汽气化在不存在氧的情况下进行。 石油渣,氢气和蒸汽分别通过管线5,6和7引入。产物通过管线10排出。热量可以由辐射管4供应。