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    • 3. 发明授权
    • Method and apparatus utilizing ethanol in non-thermal plasma treatment
of effluent gas
    • 在非热等离子体处理废气中使用乙醇的方法和设备
    • US06139694A
    • 2000-10-31
    • US86303
    • 1998-05-28
    • John W. RogersAllen J. NejezchlebGlenn E. RoladerSteven P. FederleDonald M. Littrell
    • John W. RogersAllen J. NejezchlebGlenn E. RoladerSteven P. FederleDonald M. Littrell
    • B01D53/32B01D53/56H05H1/24B01J19/08
    • B01D53/32B01D53/56H05H1/24B01D2257/404B01J2219/0894
    • An improved non-thermal plasma treatment method and apparatus provide for the pretreatment of nitric oxide-bearing exhaust gas with ethanol, either by vapor absorption or direct vapor injection. Advantageously, the high vapor pressure of ethanol permits a significant portion of the ethanol to be absorbed. Moreover, the solubility of ethanol permits the ethanol to be readily scrubbed from the exhaust gas, along with the nitrogen dioxides converted from the nitric oxides. The non-thermal plasma apparatus comprises a non-thermal plasma reactor having a chamber which provides a plurality of electrodes. The apparatus further comprises an inlet and an outlet connected to the reaction chamber, permitting the exhaust gas to enter and leave the chamber. In one embodiment, the inlet is further connected to a diverter equipped with an injector, which diverts a portion of the gas stream through the ethanol bath before reinjecting the ethanol-bearing gas stream into the inlet. In another embodiment, the inlet is equipped with an injector which receives a supply of ethanol that is sprayed directly into the gas stream. A reservoir stores the ethanol which is delivered to the injector by a metered pump. The apparatus may also include a scrubber and a stack.
    • 改进的非热等离子体处理方法和装置通过蒸汽吸收或直接蒸汽注入提供用乙醇预处理一氧化氮负载废气。 有利地,乙醇的高蒸气压允许大部分乙醇被吸收。 此外,乙醇的溶解度允许从废气中容易地洗涤乙醇,以及从一氧化氮转化的二氧化氮。 非热等离子体装置包括具有提供多个电极的室的非热等离子体反应器。 该装置还包括连接到反应室的入口和出口,允许废气进入和离开室。 在一个实施例中,入口还连接到配备有喷射器的分流器,该喷射器在将含乙醇的气流再注入入口之前将一部分气流转移通过乙醇浴。 在另一个实施例中,入口装有一个喷射器,该喷射器接收直接喷射到气流中的乙醇供应。 储存器储存通过计量泵输送到注射器的乙醇。 该装置还可以包括洗涤器和堆叠。