公开(公告)号：US06274785B1

公开(公告)日：2001-08-14

申请号：US09710662

申请日：2000-11-10

Applicant: Walter Gore

Inventor： Walter Gore

IPC: C10G1700

CPC classification number: C10G27/04

Abstract: A method for the removal of sulfur and nitrogen containing compounds from petroleum distillates. Sulfur- and nitrogen-containing compounds are oxidized using a selective oxidant to create compounds that can be preferentially extracted from a petroleum distillate due to their increased relative polarity. Oxidation is accomplished by contacting an oxidant with a distillate under optimum conditions for that distillate and continuing the reaction until oxidized sulfur- and nitrogen-containing compounds are confirmed. Extraction is accomplished by contacting oxidized distillate with a non-miscible solvent that is selective for the relatively polar oxidized sulfur- and nitrogen-containing compounds. The oxidized compounds and solvent are separated from the distillate by gravity separation or centrifugation. The distillate is water washed and polished using clay filtration. The extraction solvent is separated from the solvent/oxidized compound mixture by a simple distillation for recycling. The high sulfur/high nitrogen fraction can be recovered using any number of treatments.

Abstract translation: 从石油馏分中除去含硫和氮的化合物的方法。 使用选择性氧化剂对含硫和氮的化合物进行氧化以产生由于其相对极性增加而能够从石油馏出物中优先提取的化合物。 氧化是通过使氧化剂与馏出物在最适条件下与该馏出物接触而进行的，并且继续反应，直到氧化的含硫和含氮化合物得到确认。 萃取是通过将氧化的馏出物与对相对极性的含氧化物和含氮化合物有选择性的不可混溶的溶剂进行接触而实现的。 通过重力分离或离心将氧化的化合物和溶剂与馏出物分离。 使用粘土过滤将馏出物进行水洗和抛光。 通过简单的蒸馏将提取溶剂与溶剂/氧化的化合物混合物分离以进行再循环。 可以使用任何数量的处理来回收高硫/高氮馏分。

公开(公告)号：US06596914B2

公开(公告)日：2003-07-22

申请号：US09941131

申请日：2001-08-25

Applicant: Walter Gore ,  Steve Bonde ,  Geoffrey E. Dolbear ,  Ebbe R. Skov

Inventor： Walter Gore ,  Steve Bonde ,  Geoffrey E. Dolbear ,  Ebbe R. Skov

IPC: C07C710

CPC classification number: C10G53/14 ,  C10G21/16 ,  C10G27/12

Abstract: A multi-step process for desulfurizing liquid petroleum fuels that also removes nitrogen-containing compounds and aromatics. The process steps are: thiophene extraction; thiophene oxidation; thiophene-oxide and -dioxide extraction; raffinate solvent recovery and polishing; extract solvent recovery; and recycle-solvent purification. The thiophene oxidation is accomplished with hydrogen peroxide and the extraction solvent is acetic acid in combination with secondary solvents. The operating conditions in the process are relatively mild at near ambient pressure and less than 145° C. throughout the process, and the only chemical consumed in the process is hydrogen peroxide. The process design can be modified to accommodate a variety of liquid hydrocarbon feeds. Depending on the selected feedstock and product specifications, several process design variations are readily apparent, including the design of the extraction process sections, the solvent purification sections and the elimination of the thiophene extraction section.

Abstract translation: 用于脱除含氮化合物和芳族化合物的液体石油燃料的多步法。 工艺步骤为：噻吩提取; 噻吩氧化; 噻吩 - 氧化物和二氧化物提取; 残液溶剂回收和抛光; 提取溶剂回收; 和再循环溶剂纯化。 噻吩氧化是用过氧化氢完成的，萃取溶剂是乙酸与二级溶剂的组合。 该过程中的操作条件在近环境压力下相对温和且在整个过程中小于145℃，并且在该方法中消耗的唯一化学物质是过氧化氢。 可以修改工艺设计以适应各种液态烃进料。 根据所选择的原料和产品规格，几个工艺设计变化是显而易见的，包括提取工艺部分的设计，溶剂净化部分和噻吩提取部分的消除。

公开(公告)号：US6160193A

公开(公告)日：2000-12-12

申请号：US199709

申请日：1998-11-23

Applicant: Walter Gore

Inventor： Walter Gore

IPC: C10G27/04 ,  C10G17/00 ,  C10G17/02 ,  C10G29/22 ,  C10G45/00

CPC classification number: C10G27/04

Abstract: A method for the removal of sulfur and nitrogen containing compounds from petroleum distillates. Sulfur- and nitrogen-containing compounds are oxidized using a selective oxidant to create compounds that can be preferentially extracted from a petroleum distillate due to their increased relative polarity. Oxidation is accomplished by contacting an oxidant with a distillate under optimum conditions for that distillate and continuing the reaction until oxidized sulfur- and nitrogen-containing compounds are confirmed. Extraction is accomplished by contacting oxidized distillate with a non-miscible solvent that is selective for the relatively polar oxidized sulfur- and nitrogen-containing compounds. The oxidized compounds and solvent are separated from the distillate by gravity separation or centrifugation. The distillate is water washed and polished using clay filtration. The extraction solvent is separated from the solvent/oxidized compound mixture by a simple distillation for recycling. The high sulfur/high nitrogen fraction can be recovered using any number of treatments.

Abstract translation: 从石油馏分中除去含硫和氮的化合物的方法。 使用选择性氧化剂对含硫和氮的化合物进行氧化以产生由于其相对极性增加而能够从石油馏出物中优先提取的化合物。 氧化是通过使氧化剂与馏出物在最适条件下与该馏出物接触而进行的，并且继续反应，直到氧化的含硫和含氮化合物得到确认。 萃取是通过将氧化的馏出物与对相对极性的含氧化物和含氮化合物有选择性的不可混溶的溶剂进行接触而实现的。 通过重力分离或离心将氧化的化合物和溶剂与馏出物分离。 使用粘土过滤将馏出物进行水洗和抛光。 通过简单的蒸馏将提取溶剂与溶剂/氧化的化合物混合物分离以进行再循环。 可以使用任何数量的处理来回收高硫/高氮馏分。