公开(公告)号：US20240141262A1

公开(公告)日：2024-05-02

申请号：US18548903

申请日：2022-03-03

Applicant: Chevron U.S.A. Inc.

Inventor： Adam James Dassey ,  Manoj Ramachandran ,  Shaik Mohammed Mushtaq ,  Thomas Peter Hoelen

IPC: C11D7/08 ,  B63B57/02 ,  C11D3/00

CPC classification number: C11D7/08 ,  B63B57/02 ,  C11D3/0073 ,  C11D2111/16 ,  C11D2111/42

Abstract: A process to remove impurities from a surface of a cargo tank of a vessel used to transport liquid hydrocarbons includes using an active chemical solution to dissolve at least a portion of the impurities or the matrix in which they are embedded deposited n the surface of the cargo tank. The process also includes allowing the active chemical solution to subsequently remove embedded impurities from the surface.

公开(公告)号：US20170361142A1

公开(公告)日：2017-12-21

申请号：US15664266

申请日：2017-07-31

Applicant: Chevron U.S.A. Inc.

Inventor： Thomas Peter Hoelen ,  Gabriel P. Sabadell

IPC: A62D3/38 ,  B01J8/10 ,  B01J8/24 ,  B01J8/08 ,  A62D101/20

CPC classification number: B01J8/24 ,  B01J8/085 ,  B01J8/087 ,  B01J8/10 ,  B01J2208/00752 ,  B01J2208/00858 ,  B01J2208/00893 ,  B09C1/00 ,  B09C1/06 ,  B09C1/08

Abstract: Disclosed are a process and a system for treating contaminated soil. The process includes introducing a contaminated soil to an agitation unit. Ozone is supplied to the agitation unit thereby forming a soil-gas mixture, and the soil-gas mixture is agitated for sufficient time for the ozone to contact the contaminants thereby forming an ozone-treated soil and a residual gas-particulates mixture. The ozone-treated soil and the residual gas-particulates mixture are removed from the agitation unit. If necessary, remaining ozone is then flushed from the soil. The process occurs under negative pressure to prevent ozone from being released to the atmosphere.

公开(公告)号：US09750967B1

公开(公告)日：2017-09-05

申请号：US15188023

申请日：2016-06-21

Applicant: Chevron U.S.A. Inc.

Inventor： Thomas Peter Hoelen ,  Gabriel P. Sabadell

IPC: A62D3/38 ,  B01J8/10 ,  B01J8/08 ,  B01J8/24 ,  A62D101/20

CPC classification number: B01J8/24 ,  B01J8/085 ,  B01J8/087 ,  B01J8/10 ,  B01J2208/00752 ,  B01J2208/00858 ,  B01J2208/00893 ,  B09C1/00 ,  B09C1/06 ,  B09C1/08

Abstract: Disclosed are a process and a system for treating contaminated soil. The process includes introducing a contaminated soil to an agitation unit. Ozone is supplied to the agitation unit thereby forming a soil-gas mixture, and the soil-gas mixture is agitated for sufficient time for the ozone to contact the contaminants thereby forming an ozone-treated soil and a residual gas-particulates mixture. The ozone-treated soil and the residual gas-particulates mixture are removed from the agitation unit. If necessary, remaining ozone is then flushed from the soil. The process occurs under negative pressure to prevent ozone from being released to the atmosphere.

公开(公告)号：US10093556B2

公开(公告)日：2018-10-09

申请号：US14933084

申请日：2015-11-05

Applicant: Chevron U.S.A. Inc.

Inventor： Dennis John O'Rear ,  Thomas Peter Hoelen ,  Kevin J. Grice

IPC: C02F1/28 ,  B01J20/12 ,  C10G31/08 ,  C10G33/06 ,  C10G25/00 ,  B01J20/20 ,  B01J20/26 ,  C02F1/40 ,  C02F101/20 ,  C02F101/32 ,  C02F103/36 ,  C02F101/10 ,  C02F103/10

Abstract: Disclosed is a process to remove neutrally buoyant metal particles composed of solid particles and droplets of oil from water such as produced water from petroleum production or refinery wastewater. In one aspect, the water is contacted with oleophilic adsorbent materials which adsorb the neutrally buoyant metal particles. Also disclosed is a process for removing metal particles from a fluid volume that includes crude oil and/or condensate. The fluid volume is washed with a volume of water to form a volume of wastewater, thereby transferring at least a portion of the metal particles from the fluid into the wastewater. The volume of wastewater including the transferred metal particles is then contacted with an oleophilic adsorbent material wherein the neutrally buoyant metal particles are adsorbed by the adsorbent material. The adsorbent material is then separated from the wastewater. Finally, the treated wastewater is used to wash the crude and/or condensate.

公开(公告)号：US09878191B2

公开(公告)日：2018-01-30

申请号：US15664266

申请日：2017-07-31

Applicant: Chevron U.S.A. Inc.

Inventor： Thomas Peter Hoelen ,  Gabriel P. Sabadell

IPC: B01J19/18 ,  A62D3/38 ,  B01J8/08 ,  B01J8/10 ,  B01J8/24 ,  A62D101/20

CPC classification number: B01J8/24 ,  B01J8/085 ,  B01J8/087 ,  B01J8/10 ,  B01J2208/00752 ,  B01J2208/00858 ,  B01J2208/00893 ,  B09C1/00 ,  B09C1/06 ,  B09C1/08

Abstract: Disclosed are a process and a system for treating contaminated soil. The process includes introducing a contaminated soil to an agitation unit. Ozone is supplied to the agitation unit thereby forming a soil-gas mixture, and the soil-gas mixture is agitated for sufficient time for the ozone to contact the contaminants thereby forming an ozone-treated soil and a residual gas-particulates mixture. The ozone-treated soil and the residual gas-particulates mixture are removed from the agitation unit. If necessary, remaining ozone is then flushed from the soil. The process occurs under negative pressure to prevent ozone from being released to the atmosphere.

公开(公告)号：US20170129784A1

公开(公告)日：2017-05-11

申请号：US14933084

申请日：2015-11-05

Applicant: Chevron U.S.A. Inc.

Inventor： Dennis John O'Rear ,  Thomas Peter Hoelen ,  Kevin J. Grice

IPC: C02F1/28 ,  C10G31/08

CPC classification number: C02F1/28 ,  B01J20/12 ,  B01J20/20 ,  B01J20/26 ,  C02F1/281 ,  C02F1/283 ,  C02F1/285 ,  C02F1/286 ,  C02F1/40 ,  C02F2101/10 ,  C02F2101/20 ,  C02F2101/32 ,  C02F2103/10 ,  C02F2103/365 ,  C10G25/00 ,  C10G31/08 ,  C10G33/06 ,  C10G2300/205

Abstract: Disclosed is a process to remove neutrally buoyant metal particles composed of solid particles and droplets of oil from water such as produced water from petroleum production or refinery wastewater. In one aspect, the water is contacted with oleophilic adsorbent materials which adsorb the neutrally buoyant metal particles. Also disclosed is a process for removing metal particles from a fluid volume that includes crude oil and/or condensate. The fluid volume is washed with a volume of water to form a volume of wastewater, thereby transferring at least a portion of the metal particles from the fluid into the wastewater. The volume of wastewater including the transferred metal particles is then contacted with an oleophilic adsorbent material wherein the neutrally buoyant metal particles are adsorbed by the adsorbent material. The adsorbent material is then separated from the wastewater. Finally, the treated wastewater is used to wash the crude and/or condensate.