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Our ServicesChoose from the list below to view information on the services provided by M.L. Chartier, Inc.
Soil Reclamation through Thermal Destruction The key to efficient soil remediation is material handling ability. FEED SYSTEM THE THERMINATOR's heavy duty feed system allows even clay type materials to be processed with minimal effort. Soils and debris that do not process easily through the two inch screening, move into a crusher and are reduced to uniform, ingestible sizes. This insures complete removal of hydrocarbons trapped in the soil because heat is evenly dispersed throughout the material. When soil is reduced into pieces under two inches, the appropriate temperatures are reached quickly and cost effectiveness is attained. After material is reduced to the correct size it drops through the hopper and onto a feed conveyor. At this point the soil is weighed and fed to the drier. Material under 2" in size is conveyed into the vaporizing drier. The delivered material is heated to an average temperature of 550 degrees F, creating a condition where remediation begins. When the hydrocarbons reach their boiling point they vaporize, separate from the soil, and are channeled to the baghouse. The soil, now clean, exits through a soil discharge chute. The soil exiting from the discharge chute travels through a reconstitution mixer and discharge conveyor. This unit injects and mixes an adequate amount of water to lower soil temperatures to approximately 212 degrees F, and control fugitive dust emissions. A steam collection hood contains the steam created by injecting water into the reconstitution mixer. The particulate drop-out from the steam is reverted back into the filterhouse for secondary cleaning. The portable filterhouse receives the gas stream from the drier via insulated ductwork. The filterhouse contains 3,520 square feet of cloth providing a 3.5:1 air to cloth ratio. Filtering of airborne particulate is controlled by a pressure drop across the filterhouse from the clean side to the unclean side. Cleaning of the bags is accomplished by blowing pulsating jets of air through each row of bags on a timed cycle. Particulate dislodged from the filters during the cleaning cycle is collected on the floor of the filterhouse and pneumatically returned to, and re-introduced into the dryer. This process insures that all particulate matter is liberated of petroleum contamination. The gas stream, after having passed through the clean side of the filterhouse, is channeled into the thermal oxidizer for the last stage of the cleaning process. Air entering into the thermal oxidizer is heated to a maximum temperature of 1600 degrees F and held in the heating chamber of the thermal oxidizer (afterburner) for a retention time of 1.4 seconds. This assures efficient destruction of the incoming gas stream carrying the vaporized petroleum hydrocarbons. In addition to housing the controls of the functions already discussed, the control center's recorder documents the material discharge temperature, drier gas discharge temperature, filterhouse inlet temperature, and thermal oxidizer outlet temperature.
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M. L. Chartier, Inc. offers a soil treatment alternative which eliminates landfilling and the liabilities associated with it. Our medium temperature thermal desorption unit is a viable technology for reclaiming soil that has been contaminated with hydrocarbons. This unit is capable of processing 71 tons an hour under ideal conditions. M. L. Chartier's portable unit is transported on two chassis with a separate 10' X 24' control center.
The primary chassis contains a feed system which reduces soil material size to less than two inches. The soil is then carried into a drier where temperatures average 850 degrees F and hydrocarbons are forced to separate from the soil. Soil exits through a screw pugmill equipped with a quench unit to regain moisture content. Processed soil is then stockpiled, analyzed, and placed back into the excavated area, meeting even the most stringent cleanup criteria.
