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    Process, method, and system for removing heavy metals from fluids
    1.
    发明授权
    Process, method, and system for removing heavy metals from fluids 有权
    从流体中除去重金属的工艺，方法和系统

    公开(公告)号：US08992769B2

    公开(公告)日：2015-03-31

    申请号：US13895983

    申请日：2013-05-16

    Applicant: Chevron U.S.A. Inc.

    Inventor： Dennis John O'Rear ,  Russell Evan Cooper ,  Sujin Yean ,  Stephen Harold Roby ,  Hosna Mogaddedi ,  Manuel Eduardo Quintana ,  Jerry Max Rovner

    IPC: C10G17/02 ,  C10G17/08 ,  C10G29/06 ,  C10G29/10 ,  C10G29/12 ,  C10G53/04 ,  C10G29/20 ,  C10G29/02 ,  C10G29/22 ,  C10G53/08

    CPC classification number: C10G29/205 ,  C10G29/02 ,  C10G29/06 ,  C10G29/20 ,  C10G29/22 ,  C10G53/04 ,  C10G53/08 ,  C10G2300/201 ,  C10G2300/205

    Abstract: Trace amount levels of heavy metals such as mercury in crude oil are reduced by contacting the crude oil with a sufficient amount of a reducing agent to convert at least a portion of the non-volatile mercury into a volatile form of mercury, which can be subsequently removed by any of stripping, scrubbing, adsorption, and combinations thereof. In one embodiment, at least 50% of the mercury is removed. In another embodiment, the removal rate is at least 99%. In one embodiment, the reducing agent is selected from sulfur compounds containing at least one sulfur atom having an oxidation state less than +6; ferrous compounds; stannous compounds; oxalates; cuprous compounds; organic acids which decompose to form CO2 and/or H2 upon heating; hydroxylamine compounds; hydrazine compounds; sodium borohydride; diisobutylaluminium hydride; thiourea; transition metal halides; and mixtures thereof.

    Abstract translation: 通过使原油与足够量的还原剂接触将原油中的汞等痕量的重金属还原，以将至少一部分非挥发性汞转化为挥发性汞，后者可以随后 通过任何剥离，洗涤，吸附及其组合除去。 在一个实施方案中，除去至少50％的汞。 在另一个实施方案中，去除率至少为99％。 在一个实施方案中，还原剂选自含有氧化态小于+ 6的至少一个硫原子的硫化合物; 亚铁化合物; 亚锡化合物; 草酸盐 亚铜化合物; 在加热时分解形成CO 2和/或H 2的有机酸; 羟胺化合物; 肼化合物; 硼氢化钠 二异丁基氢化铝; 硫脲 过渡金属卤化物 及其混合物。

    METHOD FOR REMOVING MERCURY FROM CRUDE OIL
    3.
    发明申请
    METHOD FOR REMOVING MERCURY FROM CRUDE OIL 审中-公开
    从原油中去除汞的方法

    公开(公告)号：US20160251582A1

    公开(公告)日：2016-09-01

    申请号：US15016407

    申请日：2016-02-05

    Applicant: Chevron U.S.A. Inc.

    Inventor： Dennis John O'Rear ,  Russell Evan Cooper ,  Shabbir Husain

    IPC: C10G21/08 ,  C04B18/04 ,  E21B43/40 ,  C10G21/28

    CPC classification number: C10G21/08 ,  C04B18/0472 ,  C10G21/28 ,  C10G2300/205 ,  E21B43/40

    Abstract: A method is provided for recovering mercury from a crude oil into an alkaline ammonium sulfide contacting solution. Soluble mercury complexes in the contacting solution are converted to particulate mercury. The particulate mercury can be recovered by filtering, and the ammonium sulfide in the contacting solution recycled to the aqueous contacting solution.

    Abstract translation: 提供了一种从原油中回收到碱性硫化铵接触溶液中的汞的方法。 接触溶液中的可溶性汞络合物转化成颗粒状汞。 可以通过过滤回收颗粒状汞，并将接触溶液中的硫化铵再循环到含水接触溶液中。

    Process, Method, and System For Removing Heavy Metals From Fluids
    4.
    发明申请
    Process, Method, and System For Removing Heavy Metals From Fluids 审中-公开
    从流体中去除重金属的工艺，方法和系统

    公开(公告)号：US20160122658A1

    公开(公告)日：2016-05-05

    申请号：US14922383

    申请日：2015-10-26

    Applicant: Chevron U.S.A. Inc.

    Inventor： Dennis John O'Rear ,  Russell Evan Cooper

    IPC: C10G31/06 ,  C10G7/00

    CPC classification number: C10G31/06 ,  C10G7/00

    Abstract: Particulate mercury, in the form of metacinnabar, is removed from crude oil by thermally treating the crude oil at temperatures in a range from 150° C. to 350° C. and at a pressure sufficient to limit the amount of crude vaporizing to no more than 10 wt. %. In the thermal treatment, the particulate mercury is converted into elemental mercury, which can be removed by directly adsorption from the crude onto a support. In one embodiment, the elemental mercury can be removed by stripping the crude with a gas, and then adsorbing the mercury onto a support. The crude oil can be optionally treated prior to stabilization and contains 0.1 wt. % or more of C4-hydrocarbons. Following the thermal treatment, the treated crude is cooled and the pressure is reduced. The C4-hydrocarbons then vaporize from the crude and carry the elemental mercury with them. The elemental mercury in this hydrocarbon gas stream may then be removed by a solid adsorbent.

    Abstract translation: 通过在150°C至350°C的温度范围内热处理原油，并以足以将原油蒸发量限制为不超过的压力，从原油中除去颗粒状的金属微粒形式的汞 超过10重量％ ％。 在热处理中，颗粒状汞转化为元素汞，可通过将粗品直接吸附到载体上来除去。 在一个实施方案中，可以通过用气体汽提粗品，然后将汞吸附到载体上来除去元素汞。 原油可以在稳定化之前任选地处理，并且含有0.1wt。 ％以上的C4烃。 热处理后，将处理后的粗品冷却并降低压力。 然后，C4-烃从原油中蒸发并携带元素汞。 然后可以通过固体吸附剂除去该烃气流中的元素汞。

    Process, method, and system for removing heavy metals from fluids
    10.
    发明授权
    Process, method, and system for removing heavy metals from fluids 有权

    公开(公告)号：US10179880B2

    公开(公告)日：2019-01-15

    申请号：US14922383

    申请日：2015-10-26

    Applicant: Chevron U.S.A. Inc.

    Inventor： Dennis John O'Rear ,  Russell Evan Cooper

    IPC: C07C7/148 ,  C10G31/06 ,  C10G7/00

    Abstract: Particulate mercury, in the form of metacinnabar, is removed from crude oil by thermally treating the crude oil at temperatures in a range from 150° C. to 350° C. and at a pressure sufficient to limit the amount of crude vaporizing to no more than 10 wt. %. In the thermal treatment, the particulate mercury is converted into elemental mercury, which can be removed by directly adsorption from the crude onto a support. In one embodiment, the elemental mercury can be removed by stripping the crude with a gas, and then adsorbing the mercury onto a support. The crude oil can be optionally treated prior to stabilization and contains 0.1 wt. % or more of C4-hydrocarbons. Following the thermal treatment, the treated crude is cooled and the pressure is reduced. The C4-hydrocarbons then vaporize from the crude and carry the elemental mercury with them. The elemental mercury in this hydrocarbon gas stream may then be removed by a solid adsorbent.

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