振动筛板鼓泡塔中NaCO_3-CO_2-H_2O体系的反应速率  

Reaction Rate of NaCO_3-CO_2-H_2O System in Bubbling Column with Reciprocating Plate

作　　者：安钢[1] 孙波[1] 安以弘[1] 钱美华[1] 许庆[1] 

机构地区：[1]天津理工大学化学化工学院,天津300384

出　　处：《过程工程学报》2010年第4期696-700,共5页The Chinese Journal of Process Engineering

摘　　要：研究了不同CO_2流量、筛板振幅、筛板振动频率下,反应时间对振动筛板鼓泡塔中NaCO_3-CO_2-H_2O体系的NaHCO_3浓度和NaHCO_3生成速率的影响,测定了振动筛板鼓泡塔、鼓泡塔和筛板鼓泡塔在相同条件下的反应速率.结果表明,在振动筛板鼓泡塔中反应20~25min时,CO_2高流量与低流量下的NaHCO_3浓度比为1.39.反应进行5min时,NaHCO_3生成速率在筛板振幅为0.5cm时是1.5cm时的1.76倍,振动频率为120min^(-1)时是60min^(-1)时的1.46倍.振动筛板鼓泡塔比筛板鼓泡塔节省反应时间10%,比鼓泡塔省时26%.The reaction behavior of NaCO_3-CO_2-H_2O system in bubbling column with reciprocating plates was investigated.The effects of reaction time on the concentration of sodium bicarbonate and NaHCO_3 generating rate at different volumetric flow rates of CO_2 gas,vibration amplitudes of sieve plates and vibration frequencies of sieve plates were discussed,and the reaction rates in the reciprocating plate column,bubbling column and sieve plate bubbling column were experimentally determined at the same conditions.The results show that the concentration of sodium bicarbonate obtained at a high volumetric rate of CO_2 is about 1.39 times of that at a low one when the reaction proceeds for 20~25 min in the reciprocating plate column,NaHCO_3 generating rate at a vibration amplitude of 0.5 cm is 1.76 times of that at 1.5 cm while the reaction has been carried out for 5 min,and NaHCO_3 generating rate at a frequency amplitude of 120 min-1 is 1.46 times of that at 60 min-1.Compared with the sieve plate bubbling column and bubbling column,the reaction time in reciprocating plate column is reduced by 10% and 26%,respectively.

关 键 词：振动筛板鼓泡塔 振幅 振动频率 NaCO3-CO2-H2O系 

分 类 号：TQ114.17[化学工程—无机化工]