公开(公告)号：US20180009014A1

公开(公告)日：2018-01-11

申请号：US15624876

申请日：2017-06-16

Applicant: ExxonMobil Research and Engineering Company

Inventor： Gregory P. Rockwell ,  Sean M. Mercer

IPC: B09C1/06

CPC classification number: B09C1/06 ,  B09B3/0083 ,  B09B5/00 ,  B09C1/00 ,  B09C1/08 ,  F23G5/027 ,  F23G5/24 ,  F23G7/001 ,  F23G7/14 ,  F23G2201/301 ,  F23G2201/302 ,  F23G2201/40

Abstract: Methods and systems are provided for two-stage treatment of contaminated particulate material, such as soil, sediment, and/or sludge. The methods and systems utilize a thermal desorption process combined with a smoldering combustion process. The contaminated particulate material is first exposed to thermal desorption at high temperatures (e.g., greater than 150° C.) to form a heated contaminated particulate material. Next, a smoldering combustion process is initiated by introducing a combustion-supporting gas. The combined process can take place in the same or different treatment units. Treating the particulate material with a thermal desorption process prior to a smoldering combustion process enhances the completeness and throughput compared to operating these processes separately.

公开(公告)号：US10569316B2

公开(公告)日：2020-02-25

申请号：US15624876

申请日：2017-06-16

Applicant: ExxonMobil Research and Engineering Company

Inventor： Gregory P. Rockwell ,  Sean M. Mercer

IPC: B09C1/06 ,  F23G7/00 ,  F23G5/027 ,  F23G7/14 ,  B09B5/00 ,  B09C1/08 ,  B09C1/00 ,  F23G5/24 ,  B09B3/00

Abstract: Methods and systems are provided for two-stage treatment of contaminated particulate material, such as soil, sediment, and/or sludge. The methods and systems utilize a thermal desorption process combined with a smoldering combustion process. The contaminated particulate material is first exposed to thermal desorption at high temperatures (e.g., greater than 150° C.) to form a heated contaminated particulate material. Next, a smoldering combustion process is initiated by introducing a combustion-supporting gas. The combined process can take place in the same or different treatment units.