Abstract: A medium internal circulation enhanced thermal desorption soil remediation reactor and a method thereof, and belongs to the technical field of soil remediation. Internal circulation of a thermal medium is realized through a specially designed rotary drum structure, and a way for heating soil by utilizing oxidative decomposition of organic contaminants is provided, so that the treatment efficiency of an apparatus and the contaminant removal effect are improved significantly on the premise of not increasing the scale of the apparatus, and at the same time, the energy consumption of a system is reduced.
Type:
Grant
Filed:
December 8, 2021
Date of Patent:
August 15, 2023
Assignees:
NANJING TECH UNIVERSITY, CSSC NANJING LUZHOU ENVIRONMENT PROTECTION CO., LTD., NANJING INSTITUTE OF ENVIRONMENTAL SCIENCES
Abstract: A hot air circulation type indirect thermal desorption-based soil remediation system and method, belonging to the technical field of soil remediation. The system includes a thermal desorption reactor, a dust remover, a hot air circulating fan, a hot air heater, an air preheater, a combustion fan and a combustion device. By using thermal desorption gas generated by soil being heated and volatilized as a heat transfer medium and by a circular heating manner, hot air efficiently transfers heat to the soil by contact, and the high-temperature fume is kept from direct contact with the soil, so the system has the advantages of high treatment capacity, small equipment scale and the like.
Type:
Grant
Filed:
December 8, 2021
Date of Patent:
July 11, 2023
Assignees:
CSSC NANJING LUZHOU ENVIRONMENT PROTECTION CO., LTD., NANJING TECH UNIVERSITY, NANJING INSTITUTE OF ENVIRONMENTAL SCIENCES, MINISTRY OF ECOLOGY AND ENVIRONMENT
Abstract: A medium internal circulation enhanced thermal desorption soil remediation reactor and a method thereof, and belongs to the technical field of soil remediation. Internal circulation of a thermal medium is realized through a specially designed rotary drum structure, and a way for heating soil by utilizing oxidative decomposition of organic contaminants is provided, so that the treatment efficiency of an apparatus and the contaminant removal effect are improved significantly on the premise of not increasing the scale of the apparatus, and at the same time, the energy consumption of a system is reduced.
Type:
Application
Filed:
December 8, 2021
Publication date:
June 9, 2022
Applicants:
NANJING TECH UNIVERSITY, CSSC NANJING LUZHOU ENVIRONMENT PROTECTION CO., LTD., NANJING INSTITUTE OF ENVIRONMENTAL SECIENCES, MINISTRY OF ECOLOGY AND ENVIRONMENT OF THE PEOPLE'S RE
Abstract: A heat pipe-enhanced heat accumulation type indirect thermal desorption-based soil remediation device and method. On the one hand, by using thermal desorption gas generated by soil through heating and volatilizing as a heat transfer medium and by a circular heating manner, hot air efficiently transfers heat to the soil by contact, the treatment capacity of equipment is high. Moreover, high-temperature flue gas is kept from direct contact with the soil, so the high-temperature flue gas is prevented from being mixed with gaseous organic contaminants. Therefore, only a small amount of excess gas needs to be purified, so the equipment scale is small. On the other hand, by equipping a reactor with heat pipes and a ceramic heat accumulator, a second soil heating manner is provided, so that the heat transfer capacity per unit volume of the reactor is increased, and the treatment efficiency is significantly improved under the same scale.
Type:
Application
Filed:
December 3, 2021
Publication date:
June 9, 2022
Applicants:
NANJING TECH UNIVERSITY, CSSC NANJING LUZHOU ENVIRONMENT PROTECTION CO., LTD., NANJING INSTITUTE OF ENVIRONMENTAL SCIENCES, MINISTRY OF ECOLOGY AND ENVIRONMENT OF THE PEOPLE'S REP
Inventors:
Haitao XU, Yongxian ZHOU, Shengtian ZHANG, Xiang LING, Jisai CHEN, Haiyan QIN, Xiaofeng WANG, Sun HU
Abstract: A hot air circulation type indirect thermal desorption-based soil remediation system and method, belonging to the technical field of soil remediation. The system includes a thermal desorption reactor, a dust remover, a hot air circulating fan, a hot air heater, an air preheater, a combustion fan and a combustion device. By using thermal desorption gas generated by soil being heated and volatilized as a heat transfer medium and by a circular heating manner, hot air efficiently transfers heat to the soil by contact, and the high-temperature fume is kept from direct contact with the soil, so the system has the advantages of high treatment capacity, small equipment scale and the like.
Type:
Application
Filed:
December 8, 2021
Publication date:
June 9, 2022
Applicants:
CSSC NANJING LUZHOU ENVIRONMENT PROTECTION CO., LTD., NANJING TECH UNIVERSITY, NANJING INSTITUTE OF ENVIRONMENTAL SECIENCES, MINISTRY OF ECOLOGY AND ENVIRONMENT