某医药化工企业废气治理工程设计

发布时间：2018-04-10 02:42

本文选题：恶臭　切入点：吸收　出处：《浙江大学》2017年硕士论文

【摘要】：近年来,随着医药化工行业的不断发展,医药化工废气污染已经成为一个大问题。本设计对浙江省某医药化工企业新建生产项目和其辅助的公用工程所带来的废气污染问题进行治理工程设计。设计内容包括对无组织废气的控制提出一系列措施,对有组织废气的收集系统、处理工艺和处理设备进行设计计算及选型,对竣工的废气治理工程进行调试并对治理效果进行监测和评价。在无组织废气治理方面,本设计对特定点位的无组织废气进行了治理和收集.在有组织废气治理方面,设计了1#废气处理系统和2#废气处理系统.其中,1#废气处理系统中采用"一级水洗+二级酸洗氧化+三级械洗"的处理工艺,设计采用填料塔,设计风量为2200 m3/h;2#废气处理系统采用"一级酸洗氧化+二级械洗"的处理工艺,设计采用填料塔,设计风量为2000m3/h。每套废气处理系统配置相应的辅助设备,如风机,循环泵、循环槽、加药罐等。对1#和2#废气处理系统进行工程调试,确定了1#和2#废气处理系统的最终处理工艺分别为"水洗+酸洗氧化+碱洗"和"酸洗氧化+碱洗",氧化剂皆为次氯酸钠,最佳处理参数为:酸洗氧化塔pH=2～3,ORP=800～900mV;碱洗塔pH=10～11。连续补充新鲜吸收液,确保稳定的吸收效率。废气处理工程实施后有效地去除了环氧氯丙烷、甲醇、氨气和硫化氢等污染物,建设完成后的1#和2#废气处理系统出口废气以及厂界无组织废气监测结果显示,1#出口废气环氧氯丙烷排放浓度和速率分别为0.99mg/m3、2.15kg/h,甲醇排放浓度和速率分别为33.5 mg/m3、0.056 kg/h,氨气排放浓度和速率分别为4.14 mg/m3、7.0×10-3 kg/h;2#出口废气硫化氢排放浓度和速率分别为4.52 mg/m3、7.94×10-3kg/h,恶臭平均浓度为1140;厂界3个监测点的甲醇浓度为1.70mg/m3、2.03 mg/m3、2.64 mg/m3,氨气浓度为0.897 mg/m3、0.900 mg/m3、0.835 mg/m3。均能达到相关标准。废气治理工程一次性投资为128万元,运行费用为1016元/天,具有一定的经济、环境和社会效益,有利于区域空气环境的改善和民众的身体健康。
[Abstract]:In recent years, with the development of medicine and chemical industry, the exhaust gas pollution has become a big problem.This design is designed to control the exhaust gas pollution caused by a new production project and auxiliary public works in a pharmaceutical and chemical enterprise in Zhejiang province.The design content includes a series of measures to control the unorganized exhaust gas. The collection system, the treatment process and the treatment equipment of the organized waste gas are designed, calculated and selected.Debug the completed waste gas treatment project and monitor and evaluate the treatment effect.In the aspect of unorganized waste gas treatment, this design has carried on the treatment and the collection to the special spot unorganized exhaust gas.In the aspect of organized waste gas treatment, the 1# waste gas treatment system and 2# exhaust gas treatment system are designed.In the waste gas treatment system, the process of "one stage water washing, two stage acid pickling and oxidation three stage mechanical washing" is adopted, and the packing tower is used in the design.The designed air volume is 2200 m3 / hnhn2#. The process of "one stage acid pickling and oxidation two stage mechanical washing" is adopted in the system. The packing tower is used and the design air volume is 2000m3 / h.Each exhaust gas treatment system is equipped with appropriate auxiliary equipment, such as fan, circulating pump, circulating tank, dosing tank and so on.The final treatment processes of 1# and 2# waste gas treatment systems were determined as "pickling, oxidation, alkali washing" and "pickling and oxidizing alkali washing", respectively, and the oxidants were sodium hypochlorite, sodium hypochlorate, sodium hypochlorite, sodium hypochlorite, sodium hypochlorate, sodium hypochlorite, sodium hypochlorite and sodium hypochlorate, respectively.The optimum treatment parameters were as follows: ph ~ (2 +) ~ (2) ~ 3 ~ (-1) ORP ~ (800) ~ 900mV in an acid pickling oxidation tower and pH 10 ~ (-1) ~ (11) in an alkaline washing tower.Continuously replenish fresh absorbent to ensure stable absorption efficiency.After the waste gas treatment project was implemented, pollutants such as epichlorohydrin, methanol, ammonia and hydrogen sulfide were effectively removed.After the completion of the construction, the emission concentration and rate of epichlorohydrin were 0.99 mg / m ~ (3) kg / h and 3.15 kg / h, respectively, and the concentration and rate of methanol emission were 33.5 mg / m ~ (-3) kg / h and 0.056 kg / h, respectively.Can reach the relevant standards.The exhaust gas treatment project has a one-time investment of 1.28 million yuan and an operating cost of 1016 yuan per day. It has certain economic, environmental and social benefits, and is conducive to the improvement of the regional air environment and the health of the people.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：X787

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