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利用塔顶废水采出量模拟计算酯化率 总被引:1,自引:0,他引:1
主要介绍了酯化系统内水的来源 ,并对水量进行衡算 ,根据衡算结果推导出计算酯化率的公式 ,将计算结果与分析测试数据比较 ,效果良好 相似文献
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一、问题的提出 在传热章的学习中,热量衡算的观点是学生早已掌握的,而传热速率的观点往往易为学生所忽视。因此,在教学中,强调牢固树立衡算与速率二者联立的观点是至关重要的。 相似文献
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根据热力学原理,在对中变串低变系统进行物料、能量衡算的基础上,对该系统进行有效能衡算,找出有效能损失的分布情况,为进一步技改提供一定的理论依据。 相似文献
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结合化工原理课程内容特点,讲述了类比法在化工原理课程中吸收与干燥系统之间物料衡算、对流传热与对流传质之间机理分析的运用,从而让学生更好地学习与掌握化工原理这门专业基础课程。 相似文献
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我根据多年教学的若干体会,结合实验教学环节,进一步探讨了物料衡算和热量衡算在冷回流下精馏过程计算中的应用.我将课堂教学与实验教学有机结合,使学生更好地掌握化工单元操作的基本内容,学会如何将书本上的理论知识运用于工程问题. 相似文献
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根据势力学原理,在对中变患低变系统进行物料,能量衡算的基础上,对该系统进行有效能衡算,找出有效能损失的分布情况,为进一步技改提供一定的理论依据。 相似文献
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An approach to modernizing aluminum production technology based on an intense beam of accelerated electrons representing a principally new energy carrier for this production branch is proposed. Physicochemical principles for creating a new technology and reasons based on interest in modernization are discussed. Some peculiarities of the effect of accelerated electrons on the initiation of chemical reactions in liquid and solid materials used in aluminum production industry are considered. The energy balance of the classic thermal aluminum production technology is analyzed, and conclusions about engineering, economics, and the environmental advisability of developing an approach to modernizing aluminum production technology with a new energy carrier, an accelerated electron beam, is formulated based on theoretical and experimental data. The parameters of some electron accelerators that satisfy the conditions needed to develop the proposed technology even now are given. 相似文献
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同时涉及反应平衡与相平衡的综合性反应平衡计算是化工生产过程中经常遇到的问题,亦是化工热力学课程中的重要内容,但其涉及原理多、计算过程复杂,是教学中的一大难题。文中以乙醇脱水生产乙烯的反应为例,提出在合理的假设前提下,用ThermalCal软件辅助计算,能在减少计算工作量的同时得到更接近真实系统的结果。使用ThermalCal软件辅助计算有助于提高学生的计算效率,加深其对反应平衡与相平衡计算原理的理解,从而有效改善课堂教学效果。 相似文献
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针对4万t玻璃纤维窑炉和通路建立热平衡测算方案并进行热工平衡测试和计算;分析了影响热平衡的各个因素,为玻璃纤维窑炉开展节能降耗工作提出建议。 相似文献
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《Chemical engineering science》1986,41(6):1689-1698
Engineers, physiologists and physicians all have a role to play in developing equipment and procedures that allow man to work safely in extreme environments. One aspect of life support is maintaining an acceptable thermal balance, which involves some very interesting engineering analysis. Since man responds to thermal stress by adjusting blood flow to control transport of heat to the skin and by sweating or shivering, the dynamic characteristics of human thermoregulation must be considered in designing the thermal components of a life-support system. In this paper, a mathematical model of human thermal regulation is outlined in general terms before specific aspects of the method used to simulate various kinds of clothing and active heating/cooling devices are discussed. Application of the model is illustrated by using it to analyse the performance of air or liquid-cooled vests developed to alleviate heat stress in soldiers wearing the chemical defence overgarment in a warm environment. 相似文献
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Ana Paula Filippin Lucídio Molina Filho Valmir Fadel Maria Aparecida Mauro 《Drying Technology》2018,36(14):1662-1677
This study investigated thermal intermittence in apple drying, conducted in two stages, and its effect on energy consumption, drying kinetics, color and chlorogenic acid retention. The energy consumption was measured using an energy analyzer and calculated through an energy balance. The results indicate intermittent drying advantages, such as an improvement in effective diffusivities and drying rates, a consequent reduction in the total processing time (35%) and no impairment of color parameters and chlorogenic acid retention. The consumption measures showed 17% energy savings, which could have been higher if insulation was improved, and a theoretical energy savings of up to 35% was obtained from calculations in adiabatic conditions. 相似文献