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使用磁钢传动搅拌反应器,在反应温度70—110℃、乙炔压力2 kgf/cm~2和甲醛初始浓度3.3—4.0mol/l的条件下,研究了甲醛水溶液和乙炔在W—1型乙炔铜催化剂上合成丁炔二醇的本征动力学。实验表明,甲醛初始浓度对反应速率有明显的影响。甲醛初始浓度越低,反应速率越大。按並-串联复合反应的经验模型,将实验数据用非线性最小二乘法回归得到的模型表达式如下: r_F=dC_F/dt·V_1/Wcat=2.03×10~2 exp(14024/R_gT)C_F~(1.1)+2.96×10~2 exp(13992/R_gT)C_F~(1.6)C_P~(0.8) r_P=dC_P/dt·V_1/Wact=2.03×10~2 exp (14024/R_gT)C_F~(1.1)-2.96×10~2 exp(13992/R_gT)C_F~(1.6)C_P~(0.8) r_B=dC_B/dt·V_1/Wact=2.96×10~2 exp(13992/R_gT)C_F~(1.6)C_P~(0.8)式中r_E、r_P和r_B分别是甲醛消耗速率、丙炔醇和丁炔二醇生成速率,mol/sec·g,cat。
Under the conditions of reaction temperature of 70-110 ℃, pressure of acetylene of 2 kgf / cm ~ 2 and initial concentration of formaldehyde of 3.3-4.0 mol / l, the reaction of formaldehyde aqueous solution and acetylene on W-1 type acetylene Intrinsic Kinetics of Synthesis of Butynediol on Copper Catalyst. Experiments show that the initial concentration of formaldehyde on the reaction rate has a significant impact. The lower the initial concentration of formaldehyde, the greater the reaction rate. According to the empirical model of combined reaction and tandem reaction, the regression equation of the experimental data obtained by nonlinear least square method is as follows: r_F = dC_F / dt · V_1 / Wcat = 2.03 × 10 -2 exp (14024 / R_gT) C_F ~ (1.1) + 2.96 × 10 -2 exp (13992 / R_gT) C_F 1.6 C_P 0.8 0.8 r_P = dC_P / dt V_1 / Wact = 2.03 × 10 -2 exp (14024 / R_gT) C_F 1.1 ) -2.96 × 10 -2 exp (13992 / R_gT) C_F ~ (1.6) C_P ~ (0.8) r_B = dC_B / dt · V_1 / Wact = 2.96 × 10 -2 exp (13992 / R_gT) C_F ~ (1.6) C_P ~ (0.8) where r_E, r_P and r_B are the formaldehyde consumption rate, the production rate of propargyl alcohol and butynediol, mol / sec · g, cat respectively.