Heat pipe-enhanced heat accumulation type indirect thermal desorption-based soil remediation device and method

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United States of America

PATENT NO 12103058
SERIAL NO

17542125

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
NANJING TECH UNIVERSITY211899 PUZHU SOUTH ROAD PUKOU DISTRICT NANJING JIANGSU 30 NANJING CITY JIANGSU PROVINCE 211899
NANJING INSTITUTE OF ENVIRONMENTAL SCIENCES MINISTRY OF ECOLOGY AND ENVIRONMENT OF THE PEOPLE'S REPUBLIC OF CHINA8 JIANGWANGMIAO STREET XUANWU NANJING JIANGSU 210042
CSSC NANJING LUZHOU ENVIRONMENT PROTECTION CO LTD210039 NEW BUILDING OUTSIDE ZHONGHUA GATE NANJING JIANGSU NANJING CITY JIANGSU PROVINCE 210039

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Jisai Nanjing, CN 3 1
Hu, Sun Nanjing, CN 2 1
Ling, Xiang Nanjing, CN 28 32
Qin, Haiyan Nanjing, CN 6 10
Wang, Xiaofeng Nanjing, CN 186 1161
Xu, Haitao Nanjing, CN 36 72
Zhang, Shengtian Nanjing, CN 5 1
Zhou, Yongxian Nanjing, CN 4 1

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