论文总字数：18295字

摘 要

二苯甲酮类化合物在生产工艺流程中会产生大量的有机无机混合废气，包括各种取代苯系物、氯化氢等。介于这种生产现状，现在工程上大多是利用“三级降膜水吸收 碱吸收 活性炭吸收”的传统方式来解决，但用这种工艺会使气相中包含大量多为原料和产品的有机物，造成资源的浪费，而且制得的副产物盐酸中含有大量的有机杂质，品质很差，难有出路，此外，利用活性炭吸附工艺吸收尾气，更换频繁，“三废”产量大、二次污染以及运行成本昂贵等十分严肃的一系列问题，成为限制企业发展的重要难题。

本文针对以上几个问题，拟新增气相的有机无机分离工艺在原有的三级降膜水吸收工艺前，这种工艺不但能高效的回收有机组分，并且回收的有机物产物还能循环利用，节能降耗，同时能减少副产品盐酸中的大量有机杂质，大幅度提升盐酸品质，另外，还能大大降低活性炭吸收装置更换频率，降低运行成本、削减二次污染。

本论文研究了①吸附时间、②气体的进气流量、③气体的进气浓度以及④捕获剂的种类这四个因素下的单因素实验，来评估这四个因素对这项新型分离工艺功效的影响， 以找出最佳的工艺条件，通过实验证明：最优的实验反应条件为：处理时间是1.5小时、有机物进气浓度是1100ppm左右、混合气体流量：0.10 L/min、捕获剂种类：J。在此条件下，有机物的去除效率在95%以上，同时捕获剂J的饱和吸附量为12.45%wt。另外，通过工艺对比，分别研究了相同条件下，未采用捕获工艺与采用捕获工艺盐酸中有机物含量，实验结果表明：采用新增捕获工艺的盐酸酸度未明显下降，同时有机物浓度下降92%，品质显著提升。

关键词：氟苯 二苯甲酮废气 氯化氢 吸收

Treatment of waste gas from production process of benzophenone compounds

AbstractBenzophenone compounds will produce a large amount of organic and inorganic mixed waste gas in the production process, including various substituted benzenes, hydrogen chloride and so on. In view of the present production situation, most of the current projects are solved by the traditional method of "three-stage falling film water absorbs alkali to absorb with activated carbon", but the use of this process will make the gas phase contain a large number of organic compounds as raw materials and products. It causes waste of resources, and the by-product hydrochloric acid contains a large amount of organic impurities. The quality of the by-product is very poor and it is difficult to use. In addition, the waste gas is absorbed by the activated carbon adsorption process and replaced frequently, and the output of the "three wastes" is large. A series of serious problems, such as secondary pollution and expensive operation cost, have become an important problem restricting the development of enterprises.In order to solve the above problems, it is proposed that the organic and inorganic separation process of a new gas phase can not only recover the organic components efficiently, but also recycle the organic products before the original three-stage falling membrane water absorption process. At the same time, it can reduce a large amount of organic impurities in by-product hydrochloric acid and greatly improve the quality of hydrochloric acid. In addition, it can also greatly reduce the replacement frequency of the activated carbon absorber, reduce the operating cost and reduce the secondary pollution.In this paper, the single factor experiments of the inlet air concentration and the type of 4 trapping agents of the inlet air flow rate of 1 adsorption time and 2 gas have been studied. To evaluate the effects of these four factors on the efficiency of the new separation process, and to find out the best process conditions. The experimental results show that the optimal reaction conditions are as follows: the treatment time is 1.5 hours, and the concentration of organic matter inlet is about 1100ppm. Mixed gas flow: 0.10 L / min, trapping agent type: J. Under these conditions, the removal efficiency of organic matter is more than 95%, and the saturated adsorption capacity of trapping agent J is 12.45w. t. In addition, the content of organic matter in hydrochloric acid under the same conditions was studied by comparing the process. The experimental results showed that the acidity of hydrochloric acid with the new capture process did not decrease obviously. At the same time, the organic matter concentration decreased by 92%, and the quality was improved significantly.

Key words: fluorobenzene; benzophenone exhaust gas; hydrogen chloride; absorptio

目录

摘要 I

Abstract II

1.1 二苯甲酮类合成工艺及废气特点 1

1.1.1 合成工艺 1

1.1.2二苯甲酮类生产废气的特点及危害 2

1.2 废气的主要处理手段 2

1.2.1 主要处理工艺 2

1.3 本课题的研究内容 5

第二章 实验装置与方法 7

2.1 实验试剂与仪器 7

2.2 实验流程 7

第三章 实验结果 9

3.1 单因素实验 9

3.1.1 不同吸收时间对氟苯去除效率的影响 9

3.1.2 不同进气流量对氟苯去除效率的影响 10

3.1.3 不同进气浓度对氟苯去除效率的影响 12

3.1.4 不同捕获剂种类对氟苯去除效率的影响 14

3.2 捕获剂饱和吸收量 15

3.3 盐酸的酸度和TOC值 16

第四章 结论与展望 17

4.1 结论 17

4.2 展望 17

参考文献 18

致谢 21

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