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전해수,이제근 ( Hai Soo Chun,Jea Keun Lee ) 한국화학공학회 1978 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.16 No.2
In recent years some noteworthy developments and the practical applications of fluidized beds to industry have been reported as the significance of fluidized bed has been recognized more and more. In this part Ⅱ, recent advances on applied parts of fluidized beds are reviewed and characteristics of some special types will be discussed.
전해수,이제근 ( Hai Soo Chun,Jea Keun Lee ) 한국화학공학회 1978 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.16 No.1
Fluid-solid fluidized bed reactors may be classified by various types according to kinds of contacting of solids by fluid, operating conditions, the dynamic behaviour of the solids, or the mode of solid movement(circulation). The fluid-solid fluidized system which belong to the first(kinds of contacting of solids by fluid) divide into two categories, so-called $quot;an aggregative fluidized bed, or a bubbling fluidized bed$quot; and $quot;a particulate fluidized bed, or a homogeneously fluidized bed$quot;. The former is industrial importance for many gas-solid reactions. Many two-phase reactor models have been proposed in. an effort to predict chemical conversions in aggregative fluidized beds(or gas-fluidized beds) . In this paper the assumptions underlying these models are considered, and it is show en their characteristics of some models. In recent years a considerable amount of work has been carried out on electrodepositions, batteries and preparations of chemicals using electrochemical fluidized bed reactors(fluidized bed electrode), one of particulate fluidized beds. It is consists of a bed of conducting particles fluidized by the upward flow of electrolyte through some form of distributor and all bed-particles act as an electrode. The basic principles of the fluidized bed electrode and their characteristics are also reviewed here.
전해질 첨가제가 알루미늄 - 공기전지의 성능에 미치는 영향
박권필,전해수 ( Gwun Pil Park,Hai Soo Chun ) 한국공업화학회 1998 공업화학 Vol.9 No.1
알루미늄-공기전지의 4M KOH전해질에 아연화합물과 같은 첨가제를 넣어 수소발생 및 알루미늄의 부식에 미치는 영향을 검토하였다. 첨가제중의 아연화합물들은 수소발생과전압을 증가시키고, TPC(tripotasium citrate)와 CaO는 알루미늄표면에 치밀한 막을 형성하여 수소발생속도와 알루미늄부식속도를 감소시켰다 이들 첨가제들에 의해 고순도알루미늄(순도, 99.999%)의 개회로전위는 양의 방향으로, 알루미늄 No 1050(순도, 99.5%)의 개회로전위는 음의 방향으로 약간 이동했다. 개회로전위에서 첨가제는 수소발생속도와 알루미늄 부식속도를 감소시켰으며, 과전압이 증가할수록 수소발생속도가 감소하여 알루미늄의 이용율이 증가하였다. 높은 전류밀도(>100mA/cm²)에서는 TPC/CaO/ZnO 첨가제에 의해 고순도 알루미늄의 이용율이 In,Ga,Tl 합금 알루미늄의 이용율과 비슷하였다. The effects of additives such as zinc compounds in 4M KOH electrolyte of Al-air cell have been studied. Zinc compounds in electrolyte increased hydrogen evolution overpotential and TPC(tripotasium citrate)/CaO formed fine film on aluminum surface, and these additives decreased hydrogen evolution rate and corrosion rate of aluminum. These additives shifted the OCP in the positive direction on high purity aluminum(purity, 99.999%) and in the negative direction on Al No 1050(purity,99.5%). Addition of two or more additives resulted in the prevention or the reduction of corrosion rate and hydrogen evolution at OCP. As the overpotential on Al electrode increased, the hydrogen evolution rate decreased and the utilization of aluminum increased. At high current density(>100mA/cm²), TPC/CaO/ZnO additives increased the utilization of high purity aluminum up to that of aluminum alloys containing indium, gallium and thallium.
蛇紋石의 利用에 關한 硏究 [I] 蛇紋石의 化學的 方法에 依한 肥效檢討
함용묵,전해수,김용배,Ham, Yong-Mook,Chun, Hai-Soo,Kim, Yong-Bai 대한화학회 1964 대한화학회지 Vol.8 No.1
In order to investigate the availability of serpentines occurring in Korea as fertilizer, the dissolving rates of Magnesia and Silicate contents in 0.5N HCl solution after heat treatment of the serpentines, have been studied. It was found that calcination of the serpentines at $700^{\circC$ for 30 min. was the best condition for utilization of serpentines as fertilizer. The weight decrease on calcining has also been discussed from the chemical point of view.