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Title: System for enhanced destruction of hazardous wastes by in situ vitrification of soil

Abstract

The present invention comprises a system for promoting the destruction of volatile and/or hazardous contaminants present in waste materials during in situ vitrification processes. In accordance with the present invention, a cold cap (46) comprising a cohesive layer of resolidified material is formed over the mass of liquefied soil and waste (40) present between and adjacent to the electrodes (10, 12, 14, 16) during the vitrification process. This layer acts as a barrier to the upward migration of any volatile type materials thereby increasing their residence time in proximity to the heated material. The degree of destruction of volatile and/or hazardous contaminants by pyrolysis is thereby improved during the course of the vitrification procedure.

Inventors:
 [1]
  1. Richland, WA
Issue Date:
Research Org.:
Battelle Memorial Institute, Columbus, OH (United States)
OSTI Identifier:
867868
Patent Number(s):
5024556
Assignee:
Battelle Memorial Institute (Richland, WA)
Patent Classifications (CPCs):
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21B - EARTH DRILLING, e.g. DEEP DRILLING
E - FIXED CONSTRUCTIONS E02 - HYDRAULIC ENGINEERING E02D - FOUNDATIONS
DOE Contract Number:  
AC06-76RL01830
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
enhanced; destruction; hazardous; wastes; situ; vitrification; soil; comprises; promoting; volatile; contaminants; waste; materials; processes; accordance; cold; cap; 46; comprising; cohesive; layer; resolidified; material; formed; mass; liquefied; 40; adjacent; electrodes; 10; 12; 14; 16; process; barrier; upward; migration; type; increasing; residence; time; proximity; heated; degree; pyrolysis; improved; course; procedure; situ vitrification; residence time; hazardous waste; waste material; waste materials; hazardous wastes; vitrification process; cold cap; heated material; type materials; enhanced destruction; type material; /405/

Citation Formats

Timmerman, Craig L. System for enhanced destruction of hazardous wastes by in situ vitrification of soil. United States: N. p., 1991. Web.
Timmerman, Craig L. System for enhanced destruction of hazardous wastes by in situ vitrification of soil. United States.
Timmerman, Craig L. Tue . "System for enhanced destruction of hazardous wastes by in situ vitrification of soil". United States. https://www.osti.gov/servlets/purl/867868.
@article{osti_867868,
title = {System for enhanced destruction of hazardous wastes by in situ vitrification of soil},
author = {Timmerman, Craig L},
abstractNote = {The present invention comprises a system for promoting the destruction of volatile and/or hazardous contaminants present in waste materials during in situ vitrification processes. In accordance with the present invention, a cold cap (46) comprising a cohesive layer of resolidified material is formed over the mass of liquefied soil and waste (40) present between and adjacent to the electrodes (10, 12, 14, 16) during the vitrification process. This layer acts as a barrier to the upward migration of any volatile type materials thereby increasing their residence time in proximity to the heated material. The degree of destruction of volatile and/or hazardous contaminants by pyrolysis is thereby improved during the course of the vitrification procedure.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1991},
month = {1}
}

Patent:

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