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    • 1. 发明授权
    • Vacuum method for removing soil contaminants utilizing thermal
conduction heating
    • 使用热传导加热去除土壤污染物的真空方法
    • US5318116A
    • 1994-06-07
    • US9505
    • 1993-01-26
    • Harold J. VinegarGeorge L. StegemeierEric P. de RouffignacCharles C. Chou
    • Harold J. VinegarGeorge L. StegemeierEric P. de RouffignacCharles C. Chou
    • B09C1/00B09C1/06E02D3/11E21B36/04E21B43/30E21B43/24
    • E21B43/30B09C1/005B09C1/062E02D3/11E21B36/04B09C2101/00
    • An in situ method for removal of contaminants from soil imposes a vacuum on the soil through perforated heater wells that are positioned in the soil. The heater wells heat the soil to elevated temperatures by thermal conduction. The heater wells are permeable to vapors which emanate from the soil when heated and which are drawn towards the heater wells by the imposed vacuum. An impermeable flexible sheeting on the soil surface reduces the amount of air that is being pulled into the heater well from the atmosphere. A thermal insulator covers the soil surface and reduces heat losses from the soil surface. The heater wells are connected to a vacuum manifold for collection of vapors. A heat front moves away from the heater wells through the soil by thermal conduction, and the superposition of heat from a plurality of heater wells results in a more uniform temperature rise throughout the well pattern. Soil contaminants are removed by vaporization, in situ thermal decomposition, oxidation, combustion, and by steam distillation. Both the presence of water vapor and the low pressure results in vaporization of the contaminants at temperatures well below their normal boiling points. Moreover, the heater wells and the nearby soil are extremely hot and most contaminants drawn into the wells will decompose with a residence time of the order of seconds. The heater well can also be packed with a catalyst that accelerates high temperature decomposition into simpler molecules. Water vapor and remaining contaminants may be incinerated in line or may be collected in a cold trap upstream from the vacuum pump.
    • 从土壤中去除污染物的原位方法通过位于土壤中的穿孔加热井在土壤上施加真空。 加热井通过热传导将土壤加热到升高的温度。 加热井对加热时从土壤发出的蒸气是可渗透的,并通过施加的真空向加热器井拉出。 在土壤表面上的不透水柔性薄板减少了从大气中吸入加热器的空气量。 绝热体覆盖土壤表面,减少土壤表面的热量损失。 加热器井连接到用于收集蒸汽的真空歧管。 热源通过热传导离开加热器井通过土壤,并且来自多个加热井的热量的叠加导致整个井模式中更均匀的温度升高。 通过蒸发,原位热分解,氧化,燃烧和蒸汽蒸馏除去土壤污染物。 水蒸汽的存在和低压都导致污染物在远低于其正常沸点的温度下蒸发。 此外,加热器井和附近的土壤是非常热的,并且大部分被吸入井中的污染物将以几秒的停留时间分解。 加热器井也可以填充催化剂,将催化剂高温分解加速成更简单的分子。 水蒸汽和剩余的污染物可以排成一行,或者可以被收集在真空泵上游的冷阱中。
    • 2. 发明授权
    • Thermally enhanced soil decontamination method
    • 热增强土壤去污方法
    • US06951436B2
    • 2005-10-04
    • US10279771
    • 2002-10-24
    • George L. StegemeierHarold J. VinegarEric P. de Rouffignac
    • George L. StegemeierHarold J. VinegarEric P. de Rouffignac
    • B09B3/00B09C1/06
    • B09C1/06B09C2101/00
    • A method is provided to remove contaminants from contaminated soil. The method may include withdrawing vapors from a vapor extraction well, estimating the amount of water vapor removed from the contaminated soil in the vapors being withdrawn from the vapor extraction well, and applying heat to the contaminated soil from a plurality of heater wells at a rate not greater than that which would vaporize the estimated amount of water vapor. The permeability of the soil may thereby increase by the application of heat. Six or more heat injection wells may be provided for each vapor extraction well, and the heat injection wells may be placed and energized in a regular pattern around the vapor extraction well, which may include multiple rings of heaters around each vapor extraction well.
    • 提供了一种从污染土壤中去除污染物的方法。 该方法可以包括从蒸气提取井中抽出蒸气,估计从蒸气提取井取出的蒸气中的污染土壤中去除的水蒸气的量,并以多个加热井以一定比例向受污染的土壤施加热量 不大于将蒸发估计的水蒸汽量。 因此,通过施加热可以增加土壤的渗透性。 可以为每个蒸气提取井提供六个或更多个热注入井,并且热注入井可以以围绕蒸气提取井的规则图案放置和通电,该蒸气提取井可以包括围绕每个蒸气提取井的多个加热环。
    • 4. 发明授权
    • Low cost, self regulating heater for use in an in situ thermal desorption soil remediation system
    • 低成本,自调节加热器,用于原位热解吸土壤修复系统
    • US06485232B1
    • 2002-11-26
    • US09549899
    • 2000-04-14
    • Harold J. VinegarGeorge L. Stegemeier
    • Harold J. VinegarGeorge L. Stegemeier
    • A62D300
    • H05B3/03B09C1/062B09C2101/00E21B36/04H05B3/0004
    • An in situ thermal desorption soil remediation system may be used to remove contamination from soil. Heat may be applied to the soil by metallic strip heaters that have large cross sectional areas as compared to conventional heater elements. The strip heaters may be made of stainless steel. Large cross sectional areas of the strip heaters allow for large areas of thermal contact between the strip heaters and the soil being treated. Casings may not be needed between the strip heaters and the soil. The operating temperature of the strip heaters is self-regulating. As the temperature of a strip heater increases, the electrical resistance of the strip heater also increases. The increase in resistance causes a decrease in the power dissipation of the strip heater. The decrease in power dissipation as temperature increases allows a steady state heater strip temperature to be attained during use.
    • 原位热解吸土壤修复系统可用于去除土壤污染。 与常规加热器元件相比,可以通过具有大横截面积的金属条加热器将热施加到土壤上。 带状加热器可以由不锈钢制成。 带状加热器的大横截面积允许带状加热器和待处理的土壤之间的大面积的热接触。 带状加热器和土壤之间可能不需要外壳。 带式加热器的工作温度是自调节的。 随着带状加热器的温度升高,带状加热器的电阻也增加。 电阻的增加导致带状加热器功率的降低。 随着温度升高,功耗的降低允许在使用期间获得稳态加热器带温度。
    • 6. 发明授权
    • Heater element for use in an in situ thermal desorption soil remediation system
    • 用于原位热解吸土壤修复系统的加热元件
    • US06632047B2
    • 2003-10-14
    • US09836447
    • 2001-04-16
    • Harold J. VinegarGeorge L. Stegemeier
    • Harold J. VinegarGeorge L. Stegemeier
    • A62D300
    • H05B3/03B09C1/062B09C2101/00E21B36/04H05B3/0004
    • An in situ thermal desorption (ISTD) soil remediation system may be used to remove or reduce contamination within soil. Heat may be transferred to the soil from resistively heated, bare metal heater elements. The heater elements may be placed directly within the soil. Alternately, the heater elements may be suspended within casings. The heater elements may be conductive heaters, or the heater elements may be radiative heater elements. The ISTD soil remediation system may include temperature-resistant, chemical resistant, flexible conduits that transport off-gas removed from the ground to a treatment facility. A residence time of off-gas within the conduits may be sufficient to allow the off-gas to cool so that the off-gas may pass to a treatment facility through a manifold and piping made of polymeric material.
    • 原位热解吸(ISTD)土壤修复系统可用于去除或减少土壤内的污染。 热可以从电阻加热的裸金属加热器元件转移到土壤中。 加热器元件可以直接放置在土壤中。 或者,加热器元件可以悬挂在壳体内。 加热器元件可以是导电加热器,或者加热器元件可以是辐射加热器元件。 ISTD土壤修复系统可以包括将从地面移除的废气输送到处理设施的耐温,耐化学腐蚀的柔性管道。 废气在管道内的停留时间可能足以使尾气冷却,使得废气可以通过歧管和由聚合材料制成的管道传递到处理设施。
    • 7. 发明授权
    • Perforated casing method and system
    • 穿孔套管方法和系统
    • US06543539B1
    • 2003-04-08
    • US09716366
    • 2000-11-20
    • Harold J. VinegarGeorge L. Stegemeier
    • Harold J. VinegarGeorge L. Stegemeier
    • E21B4312
    • B09C1/00E21B43/086
    • A perforated casing may be placed within contaminated soil. Perforations within the casing may be covered during insertion of the casing into the ground. Covering the perforations may inhibit plugging of the perforations during installation. Covering the perforations may also inhibit worker exposure to contaminant dust or vapors during insertion of the casing into the ground. The covering for the perforations in a casing may be plugs that are placed or formed in the casing perforations. Alternately, the covering for the perforations may be a sleeve placed adjacent to the perforations. After installation of the casing, heating or chemically treating the perforation coverings may remove the coverings and allow insertion or removal of fluids and vapor through the casing.
    • 穿孔的外壳可以放置在污染的土壤中。 外壳内的穿孔可能在套管插入地面时被覆盖。 覆盖穿孔可能会在安装过程中阻止穿孔堵塞。 覆盖穿孔也可以防止工人在将套管插入地面期间暴露于污染物的灰尘或蒸汽。 用于套管中的穿孔的覆盖物可以是放置或形成在套管穿孔中的塞子。 或者,用于穿孔的覆盖物可以是与穿孔相邻放置的套筒。 在安装壳体之后,加热或化学处理穿孔覆盖物可以移除覆盖物并允许流体和蒸气穿过套管的插入或移除。
    • 8. 发明授权
    • Soil remediation using heated vapors
    • 使用加热蒸气进行土壤修复
    • US07534926B2
    • 2009-05-19
    • US10438779
    • 2003-05-15
    • George L. StegemeierHarold J. Vinegar
    • George L. StegemeierHarold J. Vinegar
    • A62D3/00
    • B09C1/10B09C1/00B09C1/005B09C1/02B09C1/06B09C1/08
    • Methods are provided for remediating contaminated soil. The methods may include collecting contaminated soil at a plurality of treatment sites. The contaminated soil at one or more of the plurality of treatment sites may be at least partially contained. Vapors produced from heating soil at one site may be used to heat contaminated soil at another site. A fluid directed to a portion of heated contaminated soil may accelerate heat transfer through the site of contaminated soil or through another site of contaminated soil. A method may include heating contaminated soil from more than one site at substantially the same time. Heating contaminated soil from more than one site at substantially the same time may include in situ and ex situ treatment at a common location.
    • 提供了补救污染土壤的方法。 所述方法可以包括在多个处理部位收集污染的土壤。 可以至少部分地包含多个处理部位中的一个或多个的被污染的土壤。 在一个地方加热土壤产生的蒸气可用于加热另一地点的污染土壤。 导向受热污染土壤的一部分的流体可能加速通过污染土壤的位置或通过另一污染土壤的位置进行热传递。 一种方法可以包括在同一时间从多于一个地点加热受污染的土壤。 在同一时间从多个地点加热受污染的土壤可能包括在一个共同的位置的原位和非原位处理。