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我们考虑忽略光学斯塔克效应、原于均匀展宽的单模环形腔吸收型双光子光学双稳系统,研究平均场近似下的半经典Maxwell—Bloch方程:  相似文献   
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介绍了干式料包和不断流快速更换定径水口技术在小方坯连铸机上的应用.通过两项技术的综合应用,提高了包龄,稳定了生产组织,降低了事故,大幅度降低了钢水消耗,取得了良好的效果.  相似文献   
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Decoloration and mineralization of yeast wastewater were investigated by using Ce-Fe/Al2O3 as a heterogeneous photo-Fenton catalyst in fluidized bed reactor in order to solve the problem of yeast wastewater discharge. The experimental results were assessed in terms of total organic carbon(TOC) reduction. The operational and reaction conditions affecting the efficiencies of TOC removal such as initial pH value, H2O2 concentration, catalyst loading and UV power were studied. The results show that TOC is reduced from 347.6 mg/L to 10.8 mg/L, color is changed from 500 units to 0 under the conditions as follows: initial pH value 6. 0, H2O2 concentration of 1. 000 g/L, catalyst loading of 5 g/L, reaction duration of 120 rain and reaction temperature of 30 ℃. The irradiated Ce-Fe/Al2O3 catalyst was complexed with 1,10-phenanthroline and then it was subjected to Fourier transform infrared spectroscopy and diffuse reflectance spectroscopy to confirm the formation of Fe(Ⅱ) in the solid state. Heterogeneous photo-Fenton reaction proves to be effective for the treatment of yeast wastewater.  相似文献   
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1 INTRODUCTIONIn the yeast manufacturingindustry ,there ex-ists an environmental problem that yeastwastewater discharge can not meet emission con-trol regulations .For yeast wastewater ,the reduc-tion of the organic load by biological process is ahard task due to the effluent s toxicity[1]. Apossi-ble strategy for overcoming this problemshould bethe use of chemical oxidation as a pre-treat mentstepin order toi mprove wastewater biodegradabili-ty .Such processes prove to be particularly ef…  相似文献   
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对于带注入信号、原子均匀展宽的单模环形腔双光子激光器,给出半经典的Maxwell-Bloch方程,论证了该系统在调谐情况下会出现双稳态,并通过绝热消除描述了双稳性导致的输出光的瞬态行为和滞后循环。所得结果表明:在输出场不连续变化之处,出现临界慢化现象。“坏腔”极限下,在  相似文献   
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含甲醛废水的过氧化氢湿式氧化及其反应动力学   总被引:7,自引:0,他引:7  
在连续流釜式反应器中,以过氧化氢为氧化剂,辅以温度和压力,研究了湿式氧化法处理甲醛模拟废水的工艺条件:过氧化氢供氧量为废水理论需氧量的110%时为宜;160~180℃为甲醛湿式氧化的适宜温度范围;甲醛初始浓度在480~1500mgL-1范围内能保持较高的去除率。建立了该反应的指数型经验动力学模型方程,得出基于甲醛和COD的表观活化能分别是38.67kJmol-1和53.02kJmol-1。 反应产物的紫外光谱分析表明中间产物甲酸的进一步氧化是甲醛彻底降解的限速步骤。  相似文献   
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介绍了对方坯结晶器半板簧振动装置所进行的优化改造.改造后的振动装置运行平稳,在实际应用中取得了良好效果.  相似文献   
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