Class / Patent application number | Description | Number of patent applications / Date published |
405128850 | Temperature | 18 |
20090067930 | METHOD OF REMEDIATING SOIL CONTAMINATED WITH POLYHALOGENATED HYDROCARBONS - Method of remediating a soil contaminated by polyhalogenated hydrocarbons, in particular PCBs, PCDDs and PCDFs, comprising the steps of removing and sieving the soil to free it of stones and gravel; possibly regulating the moisture content of the sieved soil to a value of 10-30%; subjecting the sieved soil to thermal treatment while it flows in the form of a thin, turbulent, dynamic layer in contact with a wall heated to at least 250° C.; separating the thermally treated soil from the steam generated following such treatment, the soil being substantially free of the aforementioned polyhalogenated hydrocarbons. | 03-12-2009 |
20090180836 | Method and Apparatus for Remediating Contaminated Land - A method for remediating land contaminated by a combustible material, in particular, land contaminated with non-aqueous phase liquids (NAPLs), which includes the steps of locating a subterranean volume of combustible material such as a DNAPL in land to be remediated, and igniting the combustible material to combust the material and thereby remediate the land. By monitoring combustion of the material, combustion may be optimised by, for example, supplying an oxidant or a combustion suppressant. | 07-16-2009 |
20100104369 | Thermal Driven Soil Venting System - A soil venting system driven by air thermal property is developed to deaf with tow concentration gaseous hazard materials in unsaturated zone of soil. A process utilizes the thermal driven soil venting system to create air gradient in the unsaturated zone of soil and force the gaseous hazard materials out the contaminated soil. | 04-29-2010 |
20110211912 | METHODS AND SYSTEMS FOR REMEDIATING CONTAMINATED SOIL - A system and method for remediation of contaminated soil are provided. The system comprises a soil remediation cell of contaminated soil and a plurality of multi-functional conduits located within the contaminated soil. Each multi-functional conduit defines a reaction housing. The multi-functional conduits includes heating elements for introducing heat into the contaminated soil for volatilizing the contaminants located within the contaminated soil, without utilizing mechanically driven forced air. This produces a contaminated vapor. The system and allows for re-circulation of vapors generated during breakdown of contaminants allowing for use of the re-circulated vapor for heat production and energy use. The system may be utilized for remote access and portability to disparate locations whereby the system does not require use of a container or receptacle. A substantial portion of the contaminants in the contaminated vapor are destroyed in the reaction housing. A substantially non-contaminated vapor is produced in which at least about 80% by weight of the contaminants have been destroyed. | 09-01-2011 |
20120155966 | GAS AND LIQUID RECOVERY FROM REGOLITH - A resource recovery system includes a capture container located at a desired surface defining a capture volume between the surface and an interior of the capture container. One or more hole-making devices are configured to excavate soil from at least one hole in the surface. One or more energy emitters direct energy toward the excavated soil to heat the excavated soil thereby releasing one or more compounds. The capture container is configured to capture gas and/or liquid compounds released from the excavated soil. A method of resource extraction from soil includes covering a desired surface with a capture container defining a capture volume between the desired surface and an interior of the capture container. Soil is excavated from a hole in the desired surface into the capture volume. The excavated soil is heated via one or more energy emitters thereby releasing one or more compounds into the capture volume. | 06-21-2012 |
20120177442 | METHOD FOR THE REMEDIATION OF CONTAMINATED SOIL - A containment chamber is constructed by excavating a pit at the site of oil-contaminated sand and lining the pit with an impermeable, heat-resistant, flexible plastic liner. An array of spaced apart heating assemblies is positioned to cover the bottom of the chamber. Each heating assembly may include an elongate linear electric resistance heater positioned within a tubular slotted sand screen. The containment chamber is filled with a charge of contaminated sand. Solvent, such as diesel fuel, is pumped into the elongate passageways defined between the heaters and screens. The heaters are actuated to vaporize the solvent, which moves through the screen slots and convectively permeates the charge. The vapor transfers heat to the oily sand and condenses. Condensed solvent and heated oil drain and are recovered from the chamber. | 07-12-2012 |
20120230769 | SYSTEM AND METHOD FOR DESTROYING GROUND PEARL - A method and apparatus is described for treating ground pearl in infested soil. An apparatus including a plurality of vertically oriented probes having steam outlets in communication with a common source of steam is provided. The probes are arrayed in a plurality of parallel rows with each row including a plurality of probes. The probes are inserted into the soil to a depth of at least 12 inches, and steam is injected through the probes and out of the steam outlets to contact the ground pearl, where all of the soil between said probes is heated to a temperature at least sufficient to kill ground pearl. In a preferred embodiment, the apparatus includes a means for injecting high pressure water or other penetrating fluid into the soil beneath the probes to form holes into which the probes are inserted. | 09-13-2012 |
20120263538 | SOIL REMEDIATION SYSTEMS AND METHODS - Soil remediation systems containing at least one heating device configured to heat contaminated soil for remediation and at least one storage tank configured to contain an ionic liquid are described. The soil contaminated by a volatile compound is heated by the heating device to vaporize the volatile compound, which is trapped by the ionic liquid. | 10-18-2012 |
20140321917 | Soil box for evaporative desorption process - Simple flow path with minimum turns for the vapor extraction flow paths can provide maximum air flow with minimal head loss, leading to higher efficiency in a thermal desorption process. Hot air vapor extraction arrangement can include large diameter vertical or horizontal trunk line or curved plate with continuous wire wrap well screens. The vapor extraction trunk can draw all vapors to the center of the soil box, which can reduce the treatment time by substantially removing condensation zone. The interior of the vapor extraction well screen and trunk can include porous material, which can reduce dust within the vapor stream, eliminate potential short circuiting in the event of a screen rupture and reduce potential explosion hazards. | 10-30-2014 |
20140321918 | Flow treatments in evaporative desorption processes - Treating an immediate exhaust of a thermal desorption chamber can improve the safety of the treatment process, such as reducing potential explosion or flammability when treating highly contaminated soil. Mean free paths of the exhaust gas exiting a thermal desorption chamber are restricted to limit the flame propagation and explosion fronts. For example, a section of the gas exhaust conduit can be filled with a porous media, which can assist in reducing or eliminating the potential explosion hazard in the conduit. Temperature and concentration of flammable elements can be monitored and controlled to prevent explosion hazards. An isolation valve and a pressure relief chimney can also be coupled to the exhaust of the thermal desorption chamber. | 10-30-2014 |
20140363234 | APPARATUS AND METHOD FOR SOIL REMEDIATION - A remediation processor for extracting volatiles from contaminated material includes at least a first set of augers stacked above a second set of augers wherein each set of augers can include at least two counter-rotating side-by-side augers to upwardly churn contaminated material. A burner provides heated air that is forced along an airflow path over the sets of augers. The contaminated material is conveyed along the sets of augers flows in a direction counted to the airflow path of the heated air. | 12-11-2014 |
20140377008 | Controlling processes for evaporative desorption processes - Active or closed loop controls can be used to improve the operation of a thermal desorption process. Characteristics of the thermal desorption process can be monitored, and then can be used to predict the end point of the thermal desorption process. Inputs and effluent treatment elements can also be modulated to further optimize the treatment time and quality (completeness) and to avoid any unwanted effects associated with excess processing. | 12-25-2014 |
20150010359 | Advanced Thermal Conductive Heater System for Environmental Remediation and the Destruction of Pollutants - 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. | 01-08-2015 |
20150078828 | In-situ thermal desorption processes - Contaminated soil can be in-situ cleaned without an excavation process. Heated gas can be injected to the contaminated soil to heat the soil for vaporizing the contaminants. Vacuum extraction can be used for extracting the volatile contaminants. Cool air can be injected to the cleaned soil to prevent total organic carbon degradation. | 03-19-2015 |
20150078829 | Uniform vapor pathways for soil evaporative desorption - Disclosed is a method and a system of uniform vapor pathways for soil evaporative desorption. In one embodiment, a batch of contaminated soil is placed inside a treatment compartment through a hopper. The contaminated soil is moved across an inner length of the treatment compartment. As the contaminated soil moves toward a far end of the treatment compartment, planes surrounding the contaminated soil vibrates to facilitate mixing and loosening of the contaminated soil, thereby creating uniform vapor pathways around the surface and within the contaminated soil. A plurality of helical stem auger comprising helical flights may rotate to further mix and loosen the contaminated soil. Heat is applied to the contaminated soil to desorb contaminates within the soil. A vapor extraction line within a core of the hollow stem auger suctions vaporized contaminates out of the treatment compartment and into a reclamation system. | 03-19-2015 |
20150078830 | High resolution modular heating for soil evaporative desorption - Disclosed is a method and a system of high resolution modular heating for soil evaporative desorption. In one embodiment, a soil box comprising contaminated soil is mounted within a treatment chamber. Heated gas are directed into the soil box through a plurality of injection ports. A heat front from the heated gas desorbs the surrounding contaminated soil. The delivery of the heated gas may be in sections and independently controlled among the plurality of injection ports. A bottom section of the soil box is heated prior to a top section to minimize or reduce condensation formation within lower areas of the soil box, thereby creating roadways of desiccated, heated, and/or cracked soil at the bottom section. Vaporized contaminants from the top section is able to flow freely through the roadways to get to an exit pathway at the bottom of the soil box. | 03-19-2015 |
20160129488 | SOIL REMEDIATION UNIT - A soil remediation unit that changes the use and purpose of certain commercially available aggregate mixing devices and or pug mills for removing unwanted contaminants from a quantity of contaminated soil aggregate or substrate which includes a canopy and a burner tube attached to the canopy. The burner tube includes an upper securing element and a lower adjustment element. The soil remediation unit also includes a burner supported in a desired position within the burner tube by the upper securing element and the lower adjustment element. | 05-12-2016 |
405128900 | Vitrify | 1 |
20120315094 | METHOD TO PROCESS CONTAMINATED SOIL OR WASTE IN HIGH TEMPERATURE - A method to process contaminated soil or waste in high temperature. The material ( | 12-13-2012 |