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四氢呋喃-水-钾盐体系相平衡数据的测定和关联
四氢呋喃–水–氟化钾 四氢呋喃–水–碳酸钾 液–液相平衡
2009/11/9
测定了四氢呋喃–水–氟化钾及四氢呋喃–水–碳酸钾体系在25℃时高盐浓度下的液–液相平衡数据，用Pitzer理论和NRTL方程对相平衡数据进行了关联计算，计算值与实验值吻合较好.
新型混合反胶团萃取溶菌酶的平衡行为
混合反胶团 非离子表面活性剂 含水量
2009/11/6
研究了由阴离子表面活性剂二-(2-乙基己基)琥珀酸酯磺酸钠(AOT)和非离子表面活性剂聚氧乙烯基(聚合度为4)壬基酚醚(OPE4)组成的一种新型混合反胶团体系及其萃取溶菌酶的平衡行为. 结果表明，该反胶团体系具有较大的含水量，且其含水量在较大的表面活性剂配比(0~0.8)范围内维持恒定，是由静电作用和胶束形态改变共同作用的结果. 无机盐种类和离子强度对上述混合反胶团的含水量有着显著的影响，继而影响...
优势区相图在Al-TiO2-C-ZrO2燃烧合成体系热力学分析中的应用
优势区相图 燃烧合成 热力学分析
2009/11/6
以TiO2, Al, C和ZrO2为原料, 燃烧合成制备Al2O3-TiC-ZrO2纳米复相陶瓷是一种方法简单、节时省能的新工艺. 对Al-TiO2-C-ZrO2体系进行了热力学分析，计算出该体系的绝热燃烧温度, 并利用Al-O-N，Ti-O-N，Zr-O-N，C-O-N四个体系的叠加优势区相图, 分析了各相间反应进行的趋势和最终稳定存在的平衡相. 热力学分析表明：绝热燃烧温度为2327 K, 燃...
氢/氩热等离子体裂解煤碳-氢-氧-氩多相多组分体系的热力学分析
热力学平衡 Gibbs自由能 等离子体
2009/11/5
采用Gibbs自由能极小化法对等离子体裂解煤制乙炔碳-氢-氧-氩多相多组分体系的化学反应平衡组成进行了计算，结果表明，在C-H-Ar平衡体系中，惰性组分氩的存在降低了乙炔的最高平衡产率，氩在5000 K以下基本不电离，典型组成为C:H:Ar=1:13.39:0.6的液化石油气裂解反应体系的最佳反应温度区间为2800~3200 K. 在C-H-Ar-O多相平衡体系中，氧作为杂质同样降低了乙炔的平衡产...
升温鼓泡塔内有机溶液的气含率
升温鼓泡塔 近沸点 有机溶液
2009/11/5
以对二甲苯氧化为背景，在直径300 mm、高1.2 m、大直径多管式分布器升温鼓泡塔内，采用压缩空气为气相，自来水、醋酸、二甲苯(邻、间、对二甲苯混合物)为液相，在表观气速0.009~0.224 m/s、温度11~99℃范围内，系统地考察了气速、温度、溶液组成对气含率的影响. 结果表明，不同温度范围表观气速对气含率的影响程度不同，气速幂律指数n在常温下约为0.6，升温情况下减小为0.4~0.5，接...
RESEARCH NOTE ON A PARABOLIC HEAT-BALANCE INTEGRAL METHOD WITH UNSPECIFIED EXPONENT: AN ENTROPY GENERATION APPROACH IN OPTIMAL PROFILE DETERMINATION
heat-balance integral method parabolic profile unspecified exponent
2009/10/14
The heat-balance integral method of Goodman is studied with two simple 1-D heat conduction problems with prescribed temperature and flux boundary conditions. These classical problems with well known e...
THE HEAT-BALANCE INTEGRAL METHOD BY A PARABOLIC PROFILE WITH UNSPECIFIED EXPONENT: ANALYSIS AND BENCHMARK EXERCISES
heat-balance integral method heat-conduction parabolic profile unspecified exponent
2009/10/14
The heat-balance integral method of Goodman has been thoroughly analyzed in the case of a parabolic profile with unspecified exponent depending on the boundary condition imposed. That the classical Go...
EXPERIMENTAL STUDY ON THE PERFORMANCE LIMITATION OF MICRO HEAT PIPES OF NON CIRCULAR CROSS-SECTIONS
micro heat pipe non circular cross-section
2009/10/14
An experimental study of three different cross-sections (circular, semicircular and rectangular) of micro heat pipes having same hydraulic diameter (D = 3 mm) is carried out at three different inclina...
INCORRECT INVERSE PROBLEM SOLUTION METHOD FOR PARAMETER IDENTIFICATION OF TRANSPORT PROCESSES MODELS
model parameter identification incorrect inverse problems iterative method
2009/10/13
A method for model parameter identification on the bases of minimization of the least square function has been proposed. An iterative regularization procedure and a numerical algorithm have been devel...
INFLUENCE OF THE DEGREE OF IRREVERSIBILITY OF THERMAL AND MECHANICAL TREATMENT REGIME ON THE FINAL QUALITIES OF A REACTING-SYSTEM
thermal and mechanical treatment entropy generation in chemical and physical conversions
2009/10/13
The final qualities of interest (such as grain size, chemical purity, degree of stability, transition order) of new compounds, synthesised in solid state transformation processes (chemical reactions, ...
DFT Calculation on 76 Polychlorophenazines: Their Thermodynamic Function and Implication of Cl Substituted Position
DFT 76 Polychlorophenazines Thermodynamic Function
2009/9/2
Thermodynamic functions, including enthalpy (Hθ) and entropy (Sθ) for 76 polychlorophenazines (PCPZs) in the gas state at 298.15 K and 101.325 kPa, have been calculated using the B3LYP/6-3...
煅烧升温速率对于钙基吸收剂脱碳性能的影响
脱碳 钙基吸收剂 煅烧
2009/8/31
A wire-mesh reactor capable of heating samples at a given heating-rate (1—1000 K•s-1) was used to investigate the effect of heating-rate on Ca-based absorbent performance of CO2 capture.BET meth...
10 kWth级串行流化床中木屑化学链燃烧试验
串行流化床 10 kWth级
2009/8/31
设计并建立了10 kWth级串行流化床化学链燃烧反应器系统，以NiO/Al2O3为载氧体，在该系统上进行生物质（松木木屑）化学链燃烧分离CO2的试验研究，探讨了燃料反应器温度T、水蒸气/生物质比率S/B对两个反应器（空气反应器和燃料反应器）气体产物组成以及燃烧效率的影响。试验结果表明，燃料反应器温度是影响生物质化学链燃烧过程的重要因素，随着温度的升高，燃料反应器气体产物中CO2浓度不断上升，CH4...
化学法制备高纯碲过程中杂质元素脱除的热力学分析
热力学分析 硫化沉淀 净化 高纯碲
2009/8/28
通过对Te(Ⅳ)-Pb(Ⅱ)-Cu(Ⅱ)-As(Ⅲ)-H2O和Te(Ⅳ)-MeS-H2O系热力学分析,得到溶液中Te(Ⅳ), Pb(Ⅱ),Cu(Ⅱ)和As(Ⅲ)离子总浓度与溶液pH值、温度以及溶液中S2-浓度的关系。热力学分析结果表明:采用硫化物沉淀法可以深度净化Na2TeO3溶液,去除其中大部分重金属离子及砷离子,确定理论上去除Na2TeO3溶液中Pb(Ⅱ),Cu(Ⅱ)和As(Ⅲ)离子的最佳pH...