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首页> 外文会议>AWMA's (Air Waste Management Association) annual conference exhibition >Concomitant Adsorption and Desorption for Dampening Fluctuations in Organic Vapors Concentrations for Use Upstream of Biofilters
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Concomitant Adsorption and Desorption for Dampening Fluctuations in Organic Vapors Concentrations for Use Upstream of Biofilters

机译：伴随吸附和解吸以减少生物过滤器上游使用的有机蒸气浓度的波动

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Fluctuations in organic vapor concentrations make it challenging for biofilters and thermal oxidizers to operate efficiently and economically. For example, too high of an organic vapor concentration is toxic while too low of a concentration causes starvation of microorganisms in a biofilter, which results in reduced organic vapor removal efficiency. A new system, referred to as Concomitant Adsorption-Desorption (CAD), is described here that can stabilize the concentration of organic vapors upstream of a biofilter or a thermal oxidizer. CAD controls the desorption of organic vapor from an adsorbent by controlling the temperature of the adsorbent to force the concentration of the desorbed organic vapor to match a user-defined set-point concentration.CAD was used here to experimentally stabilize the concentration of methyl ethyl ketone (MEK) in an air stream using activated carbon fiber cloth adsorbent with microwave (μCAD) and electrical resistive (eCAD) heating. The μCAD system's inlet MEK concentration switched between 5 and 1,020 ppmv every 10 min, while its concomitant outlet concentration was stabilized at 500 ± 2 ppmv. The set-point for the adsorber's outlet concentration was 500 ppmv. The normalized average absolute error (NAAE) between the measured and set-point MEK concentrations was 0.3%. The inlet MEK concentration for the eCAD system switched between 0 ppmv and 530 ppmv every 10 to 20 min for dry and for humid air streams. The NAAE values for the dry and humid gas streams were 0.4% and 0.3%, respectively. eCAD is able to readily
机译：有机蒸气浓度的波动使生物过滤器和热氧化器的高效经济运行具有挑战性。例如，有机蒸气浓度太高是有毒的，而浓度太低会引起生物滤池中微生物的饥饿，这导致有机蒸气去除效率降低。本文介绍了一种新系统，称为伴随吸附-解吸（CAD），该系统可以稳定生物过滤器或热氧化剂上游有机蒸气的浓度。 CAD通过控制吸附剂的温度以迫使解吸的有机蒸汽的浓度达到用户定义的设定点浓度来控制吸附剂对有机蒸汽的解吸.CAD在这里用于通过实验来稳定甲乙酮的浓度（MEK）在空气中使用活性炭纤维布吸附剂进行微波（μCAD）和电阻（eCAD）加热。 μCAD系统的入口MEK浓度每10分钟在5和1,020 ppmv之间切换，而其伴随的出口浓度稳定在500±2 ppmv。吸附器出口浓度的设定点为500 ppmv。测量和设定点MEK浓度之间的标准化平均绝对误差（NAAE）为0.3％。对于干燥和潮湿的空气流，eCAD系统的入口MEK浓度每10至20分钟在0 ppmv和530 ppmv之间切换。干湿气流的NAAE值分别为0.4％和0.3％。 eCAD能够轻松

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  • 会议地点 Portland OR(US)
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    Zaher Hashisho; Hamidreza Emamipour; Mark J. Rood; K. James Hay; Byung J.Kim; Deborah Thurston;

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    Department of Civil and Environmental Engineering University of Alberta Edmonton Alberta Canada T6G 2W2;

    Department of Civil and Environmental Engineering University of Illinois at Urbana-Champaign Urbana Illinois 61801 USA;

    Department of Civil and Environmental Engineering University of Illinois at Urbana-Champaign Urbana Illinois 61801 USA Industrial Enterprise Systems Engineering University of Illinois at Urbana-Champaign Urbana Illinois 61801 USA;

    Engineer Research and Development Center Construction Engineering Research Laboratory Champaign Illinois 61826 USA;

    Department of Civil and Environmental Engineering University of Illinois at Urbana;

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