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구리도금 수지입자를 사용한 유동층 전극 반응기의 효율

Performance of Fluidized-Bed Electrode Reactor Containing Copper-Coated Resin Particles

HWAHAK KONGHAK, April 1982, 20(2), 151-160(10), NONE
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Abstract

무거운 금속입자를 사용하는 유동층전극반응기를 동력에너지 측면에서 조사해 보았다. 금속입자 대신에 가벼운 입자를 사용함으로써 동력에너지를 줄일 수 있다. 이러한 입자를 개발하기 위하여 유동화입자로서 구리를 입힌 macroreticular resin을 사용하였다. 정체용액에서 수소가 발생하지 않는 최대 음극전압을 reference voltage로 택하였으며, 유동층전극반응기에서의 전류 크기를 층공극률과 입자 직경 및 용액 농도의 함수형태로 표시하였다. 이러한 전류관계식과 압력강하 자료를 두 입자계를 비교하는 비용함수에 도입하였다. 구리용액의 농도를 낮추는 공정모델을 선택함으로써 비용함수에 의하여 두 계를 비교하여 조사하였다. 결과로서 두 계를 비교하는 데는 양수 비계수에 대한 자본비용계수의 비가 중요한 인자임을 알 수 있었다.
Copper-coated macroreticular resin was investigated as a possible replacement for heavy metal particles normally used as fluidized bed electrode. In view of the energy consumption for fluidization, the use of lighter particles may result in substantial saving of the energy for pumping. A voltage just below that of hydrogen evolution in the stationary bed was selected as the reference voltage and the corresponding currents in the fluidized bed were obtained to correlate them as functions of the bed porosity, particle diameter and concentration of copper solution. With these correlations for copper-coated resin and copper particles, pressure drop data were incorporated into the cost function which compares the performances of the two systems. Using a model process that reduces copper concentration to a certain preassigned value, two particle systems were examined. As a result, it has been found that the ratio of capital cost coefficient to that of pumping cost is an important parameter in determining the advantages between the two systems. In other words, the lower the ratio becomes, the more effective the copper-coated resin system.

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