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。