Wet gas purification method and system for practicing the same
    3.
    发明申请
    Wet gas purification method and system for practicing the same 有权
    湿气净化方法和系统实践相同

    公开(公告)号:US20060110304A1

    公开(公告)日:2006-05-25

    申请号:US10523679

    申请日:2003-08-06

    IPC分类号: B01D53/58

    摘要: The present invention provides a wet gas purification method in which ammonia in the gas is removed, and a system for carrying out said method, characterized in that the method includes a washing step in which ammonia in the gas is absorbed in an absorbent for removal; and an ammonia treating step in which ammonia is stripped from the discharged absorbent at a following stage of the washing step, wherein the absorbent is divided into an off-gas containing ammonia and effluent. In the washing step makeup water is charged continuously or intermittently so that the concentration of ammonia in the gas having passed through the washing step is 10 ppm or lower. According to the present invention, a wet gas purification method can be performed in which the running costs involved in operation is reduced, the manipulation step and system are simple, operation is easy, and the reliability is high.

    摘要翻译: 本发明提供一种其中除去气体中的氨的湿气净化方法,以及用于实施所述方法的系统,其特征在于,所述方法包括洗涤步骤,其中所述气体中的氨被吸收剂吸收除去; 以及在洗涤步骤的后续阶段从排出的吸收剂中除去氨的氨处理步骤,其中吸收剂被分成含有氨和废水的废气。 在洗涤步骤中,连续地或间歇地加入水,使得通过洗涤步骤的气体中的氨浓度为10ppm以下。 根据本发明,可以进行操作中涉及的运行成本降低的操作步骤和系统简单,操作容易,可靠性高的湿气净化方法。

    Wet gas purification method and system for practicing the same
    4.
    发明授权
    Wet gas purification method and system for practicing the same 有权
    湿气净化方法和系统实践相同

    公开(公告)号:US07381389B2

    公开(公告)日:2008-06-03

    申请号:US10523679

    申请日:2003-08-06

    IPC分类号: B01D53/58 B01J10/00

    摘要: A wet gas purification method is provided for removing ammonia from a heavy oil gasification gas, such as coal. The method principally involves a washing step during which absorbent is charged into the gas to absorb ammonia and an ammonia treating step wherein absorbent discharged from the washing step is separated into an effluent and an off-gas containing ammonia. The amount of absorbent charged during the washing step is controlled such that the ammonia concentration of gas exiting the washing step is 10 ppm or less.

    摘要翻译: 提供湿气净化方法,用于从重油气化气体如煤中除去氨。 该方法主要涉及洗涤步骤,在该步骤中将吸收剂装入气体中以吸收氨和氨处理步骤,其中将从洗涤步骤排出的吸收剂分离成流出物和含有氨的废气。 控制在洗涤步骤中加入的吸收剂的量使得离开洗涤步骤的气体的氨浓度为10ppm以下。

    Mercury removal method and system
    5.
    发明授权
    Mercury removal method and system 有权
    汞去除方法和系统

    公开(公告)号:US06770119B2

    公开(公告)日:2004-08-03

    申请号:US10233526

    申请日:2002-09-04

    IPC分类号: B01D5314

    摘要: The present invention provides a mercury removal method which can effectively remove very small amounts of mercury components present in a gas during wet gas purification such as coal or heavy oil gasification gas purification and petroleum refining. A mercury removal method for the removal of mercury present in a gas, the method comprising the steps of bringing a gas containing at least mercury and not less than 10 ppm of hydrogen sulfide into gas-liquid contact with an absorbing fluid under pressurized conditions so as to cause mercury to pass into the absorbing fluid; flashing the mercury-containing absorbing fluid under lower-pressure conditions to separate it into gaseous components and liquid components; and removing the mercury contained in the separated gaseous components by adsorption to an adsorbent.

    摘要翻译: 本发明提供了一种除汞方法,其可以有效地去除在湿气净化中例如煤或重油气化气净化和石油精炼中的气体中存在的非常少量的汞成分。 一种用于除去存在于气体中的汞的汞去除方法,该方法包括以下步骤:在加压条件下使至少包含汞和不少于10ppm硫化氢的气体与吸收液体气液接触,以便 使汞进入吸收液; 在低压条件下闪烁含汞吸收液,将其分离成气态组分和液体组分; 并且通过吸附到吸附剂上除去分离的气态组分中所含的汞。

    Method for removing mercury in exhaust gas and system therefor

    公开(公告)号:US07572420B2

    公开(公告)日:2009-08-11

    申请号:US10815419

    申请日:2004-04-01

    IPC分类号: B01D53/64

    摘要: The present invention provides a method for removing mercury in exhaust gas, in which mercury in exhaust gas discharged from combustion equipment is removed, characterized by including a mercury oxidation process in which mercury in the exhaust gas is converted to mercury chloride in the presence of a catalyst; a contact process in which the exhaust gas is brought into contact with an absorbing solution in a scrubber to absorb and remove mercury components from the exhaust gas; and a control process in which blowing of air or addition of an oxidizing agent into the scrubber is accomplished, and the amount of blown air or the added amount of oxidizing agent is regulated to control the oxidation-reduction potential of the absorbing agent, and a system for removing mercury in exhaust gas. According to the mercury removing method in accordance with the present invention, a phenomenon that mercury chloride is reduced into metallic mercury by SO2 etc. and the metallic mercury scatters in the exhaust gas can be prevented, and mercury in the exhaust gas can be decreased effectively.

    Method for removing mercury in exhaust gas and system therefor
    8.
    发明授权
    Method for removing mercury in exhaust gas and system therefor 有权
    废气中汞的去除方法及其系统

    公开(公告)号:US08703080B2

    公开(公告)日:2014-04-22

    申请号:US12459023

    申请日:2009-06-25

    摘要: The present invention provides a method for removing mercury in exhaust gas, in which mercury in exhaust gas discharged from combustion equipment is removed, characterized by including a mercury oxidation process in which mercury in the exhaust gas is converted to mercury chloride in the presence of a catalyst; a contact process in which the exhaust gas is brought into contact with an absorbing solution in a scrubber to absorb and remove mercury components from the exhaust gas; and a control process in which blowing of air or addition of an oxidizing agent into the scrubber is accomplished, and the amount of blown air or the added amount of oxidizing agent is regulated to control the oxidation-reduction potential of the absorbing agent, and a system for removing mercury in exhaust gas. According to the mercury removing method in accordance with the present invention, a phenomenon that mercury chloride is reduced into metallic mercury by SO2 etc. and the metallic mercury scatters in the exhaust gas can be prevented, and mercury in the exhaust gas can be decreased effectively.

    摘要翻译: 本发明提供了一种去除废气中排出的废气中的汞的方法,其中废气中排出的废气中的汞被除去,其特征在于包括一种汞氧化法,其中废气中的汞转化为氯化汞, 催化剂; 接触方法,其中废气与洗涤器中的吸收溶液接触以从废气中吸收和去除汞组分; 以及控制方法,其中完成吹入空气或将氧化剂加入到洗涤器中,并且调节吹入空气量或氧化剂的添加量以控制吸收剂的氧化还原电位,并且 废气中汞去除系统。 根据本发明的水银除去方法,可以防止将二氧化氯还原成金属汞,并且可以防止金属汞在排气中飞散的现象,从而可以有效地降低废气中的汞 。