【作者】 刁春燕；

【导师】 王良恩；

【作者基本信息】 福州大学 ， 环境工程， 2004， 硕士

【摘要】 本文首次提出以BDO作为新型吸收剂治理有机废气，并进行了深入研究。实验采用θ网环填料吸收塔，以自行配制的有机废气为研究对象，系统地考察了吸收有机质进口浓度、BDO喷淋量、空塔气速、液气比、吸收温度、塔高等因素对吸收效率的影响；针对有机废气设计正交实验，应用方差分析法分析正交实验数据，找出影响实验吸收效率的主要因素，确定最佳工艺参数。另外，建立了填料吸收塔的数学模型，对有机废气的吸收过程进行了模拟计算，为有机废气的工业化治理提供必不可少的基础数据和工艺参数。本文实验研究结果表明：1）BDO吸收剂对有机废气的吸收效果甚好。甲苯吸收率可达到96%以上，丁酮吸收率可达到95%以上，醋酸丁酯吸收率可达到100%。因此可以认为对这些有机废气来说，BDO是一种优良的吸收剂。2）正交实验结果表明，吸收过程的主要影响因素是吸收温度；次要因素为BDO喷淋量和进口气体流量。3）本文通过实验得到有机废气的最佳工艺操作参数。甲苯的最佳工艺操作参数为：BDO吸收剂喷淋量为1.633L/h，进口甲苯气量129.87L/h，吸收温度为10℃。丁酮的最佳工艺操作参数为：BDO吸收剂喷淋量为1.893L/h，进口丁酮气量0.6m3/h，吸收温度为13℃。由于出口醋酸丁酯浓度很低而检测不到，所以本文认定醋酸丁酯可全部吸收。本文对有机废气的吸收过程进行了模拟计算，取得了令人满意的模拟结果：丁酮吸收率的实验值与计算值的最大相对误差为4.54%，平均相对误差为2.19%；醋酸丁酯吸收率的相对误差最大值为0.80%，平均值为0.32%；甲苯吸收率的相对误差的最大值为4.27%，平均值为2.22%。本文还应用该模型对苯废气、甲苯和苯混合废气、丁酮和醋酸丁酯混合废气分别进行了模拟计算。更多还原

【Abstract】 The treatment of organic waste gases with BDO absorbent was studied in this paper for the first time. We systematically investigated the influence of operational variables on absorption efficiency, such as the entrance concentration of absorbed hydrocarbon, the liquid volume of BDO, the gas flow velocity , ratio of volume of liquid to gas, the absorption temperature, and the height of packing-tower. Through the variance analysis of experimental data, we established the primary factors and optimal operation conditions. In addition, the mathematic model of packing-absorption tower was established. And we simulated and calculated the absorption process using the model, which can provide basic data and technical parameter for the industrialization of the treatment of the organic waste gases. The main results of experimental research are as follows:(1) BDO can absorb organic waste gases very well. The absorption efficiency of toluene is greater than 96%. The absorption efficiency of methyl ethyl ketone is greater than 95%. And the absorption efficiency of n-butyl acetate can reach 100%. So BDO is a favorable absorbent for these waste gases.(2) From the analysis of experimental results, we can conclude that the temperature is the most primary factor, and the liquid volume of BDO absorbent and the gas flow velocity are secondary. (3) The optimal operating conditions are obtained in the experiment.Those of toluene are as follows: the volume of liquid is 1.633L/h, the volume of gas is 129.87L/h, and the temperature is 10℃. And those of methyl ethyl ketone are as follows: the volume of liquid is 1.893L/h, the volume of gas is 0.6m3/h, and the temperature is 13℃. Because the concentration of n-butyl acetate cann’t be determined, the paper considers that n-butyl acetate can be absorbed entirely.By simulating the absorption process of organic waste gases, we <WP=4>can conclude that the most relative error of the absorption efficiency of methyl ethyl ketone is 4.54%, the average relative error is 2.19%. And the most relative error of the absorption efficiency of n-butyl acetate is 0.80%, the average relative error is 0.32%. And the most relative error of the absorption efficiency of toluene is 4.27%, the average relative error is 2.22%. And then the paper simulates and calculates the absorption process of organic waste gases containing benzene with this model. And it simulates and calculates the absorption process of organic waste gases containing toluene and benzene, and that of organic waste gases containing methyl ethyl ketone and n-butyl acetate.更多还原