Abstract: An off gas purification system provides superior results to other systems for removing volatile organic compounds from off gas, especially off gas from soil, groundwater, industrial processes, pipelines and storage tanks. Off gas is extracted, followed by compression and condensation. Compression and condensation produce an off gas that must be further treated to produce pollutant-free exhaust. A separation device cleans the influent gas/air by separating residual chemical vapor from the gas stream and returning that chemical vapor to the compression and condensation step. After removal of all detectable volatile organic compounds, the air stream may be further separated into segregated gases, and heated gas is used to thermally enhance the desorption or degradation of volatile organic compounds from the off gas source or a separation device.

Abstract: An off gas extraction system provides superior results to other systems for cleaning polluted soil. Off gas is extracted, followed by compression and condensation. Compression and condensation produce an off gas further treated to produce pollutant-free exhaust. A regenerative adsorber cleans the influent gas/air by adsorbing residual chemical vapor and concentrates the removed chemical vapor and reprocesses them. Conventional scrubbers are used on the back end of the system to produce a final exhaust as prescribed by environmental regulation. Methods of accomplishing the same are likewise taught including combinations and additions consistent with schemes as they evolve.

Abstract: A thermal conductive heating and desorption system is disclosed, which provides superior results to other systems for the removal of pollutants from soil, groundwater and other affected medias using a novel enhanced gas fired recuperative heater and oxidation system. Pollutants in the affected, heated media are partially destroyed by hydrolysis, pyrolysis and/or oxidation processes. Remaining pollutants are extracted from the affected media, and pollutant off gas is then introduced into the heater system where it is both thermally and catalytically oxidized. Heat from combusted fuel and pollutant off gas in the heater system is used to preheat incoming combustion air through a recuperative heat exchanger, enabling significant reductions in fuel usage by the heater system. Combusted fuel and off gas discharged from the heater system may be further treated to achieve specified discharge standards.

Abstract: An off gas purification system provides superior results to other systems for removing volatile organic compounds from off gas, especially off gas from soil, groundwater, industrial processes, pipelines and storage tanks. Off gas is extracted, followed by compression and condensation. Compression and condensation produce an off gas that must be further treated to produce pollutant-free exhaust. A separation device cleans the influent gas/air by separating residual chemical vapor from the gas stream and returning that chemical vapor to the compression and condensation step. After removal of all detectable volatile organic compounds, the air stream may be further separated into segregated gases, and heated gas is used to thermally enhance the desorption or degradation of volatile organic compounds from the off gas source or a separation device.

Abstract: An off gas extraction system provides superior results to other systems for cleaning polluted soil. Off gas is extracted, followed by compression and condensation. Compression and condensation produce an off gas further treated to produce pollutant-free exhaust. A regenerative adsorber cleans the influent gas/air by adsorbing residual chemical vapor and concentrates the removed chemical vapor and reprocesses them. Conventional scrubbers are used on the back end of the system to produce a final exhaust as prescribed by environmental regulation. Methods of accomplishing the same are likewise taught including combinations and additions consistent with schemes as they evolve.