The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 01, 2024
Filed:
Dec. 03, 2021
Nanjing Tech University, Jiangsu, CN;
Cssc Nanjing Luzhou Environment Protection Co., Ltd., Jiangsu, CN;
Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of the People's Republic of China, Jiangsu, CN;
Haitao Xu, Nanjing, CN;
Yongxian Zhou, Nanjing, CN;
Shengtian Zhang, Nanjing, CN;
Xiang Ling, Nanjing, CN;
Jisai Chen, Nanjing, CN;
Haiyan Qin, Nanjing, CN;
Xiaofeng Wang, Nanjing, CN;
Sun Hu, Nanjing, CN;
Abstract
The present invention discloses a soil remediation device and method. Soil is remediated by (i) introducing hot air at 550-650° C. from an outlet of an air heater into the drum from a circulating hot air inlet of a discharge end fixed hood and transferring heat with the soil by direct countercurrent contact such that the soil is heated, and (ii) releasing heat from a heat accumulator at a bottom of the drum through heat pipes such that the soil is heated. As a temperature of the soil gradually rises to about 300-500° C., water and organic contaminants in the soil are volatilized into a gaseous state and carry dust to become thermal desorption offgas that is separated from the soil, the thermal desorption offgas becoming part of the hot air and flowing from the drum to a dust remover. Part of the hot air is recirculated to the drum, and another part of the hot air is discharged after being purified.