發(fā)布時(shí)間：2018-06-28 14:19

  本文選題：氯氣 + 化學(xué)吸收��； 參考：《大連理工大學(xué)》2015年碩士論文

【摘要】：本文通過對恒盛工廠現(xiàn)有氯氣吸收系統(tǒng)的調(diào)查、分析,以及對氯氣吸收的工藝、設(shè)備及氣體吸收的理論研究,并結(jié)合工廠的實(shí)際運(yùn)營情況,我們開發(fā)了氯氣回用和氯氣吸收的組合優(yōu)化方案。首先,以水作為吸收劑,選用GX500-20型號(hào)石墨塊孔型降膜吸收器,將尾氣中的HCl氣體吸收制成30%濃度的鹽酸,供生產(chǎn)其它工序使用；尾氣經(jīng)水吸收去除HC1后,采用水噴射器將此部分混合氣體壓縮到0.06-0.07MPa,直接供生產(chǎn)系統(tǒng)回用；當(dāng)生產(chǎn)系統(tǒng)不需回收氯氣時(shí),通過自控裝置將此部分尾氣輸送到氯氣吸收系統(tǒng)進(jìn)行吸收,副產(chǎn)次氯酸鈉。對于氯氣的吸收,考慮到恒盛化工的生產(chǎn)屬于典型的間歇式精細(xì)化工生產(chǎn),尾氣排放量波動(dòng)很大,傳統(tǒng)的雙塔吸收工藝不適合恒盛化工間歇式生產(chǎn)方式。通過研究,在雙塔吸收工藝基礎(chǔ)上建立了三塔間歇吸收模型,并開發(fā)了針對三塔間歇吸收模型噴淋量的計(jì)算方法。對恒盛氯氣吸收系統(tǒng)的改造結(jié)果證明,吸收系統(tǒng)滿負(fù)荷運(yùn)轉(zhuǎn)時(shí),三塔間歇吸收模型的吸收效率和能力能夠滿足生產(chǎn)要求；尾氣排放達(dá)到國家環(huán)保標(biāo)準(zhǔn)；并且有效氯含量能夠達(dá)到10%以上,達(dá)到吸收液作為次氯酸鈉副產(chǎn)銷售的指標(biāo)；較原氯氣吸收裝置,提高液堿的利用率10%,吸收成本降低約30%。
[Abstract]:Through the investigation and analysis of the existing chlorine absorption system in Hengsheng factory, and the theoretical study of the process of chlorine absorption, the theoretical study of the absorption of equipment and gas, combined with the actual operation of the factory, we have developed a combination optimization scheme for the reuse of chlorine gas and the absorption of chlorine gas. First, the GX500-20 type graphite block hole is selected with water as absorbent. Type falling film absorber, the HCl gas in the tail gas is absorbed into 30% concentration of hydrochloric acid to be used in other processes. After the tail gas is absorbed by water to remove HC1, a water ejector is used to compress this part of the mixture to 0.06-0.07MPa, which is directly used for the production system. When the production system does not need to recover chlorine gas, this part is carried out through the automatic control device. The gas is transported to the absorption system of chlorine gas and the by-product of sodium hypochlorite. For the absorption of chlorine gas, it is considered that the production of Hengsheng chemical production belongs to the typical batch fine chemical production, the emission of the tail gas fluctuates very much. The traditional Twin Towers absorption process is not suitable for the Hengsheng chemical batch production mode. Through the study, the Twin Towers absorption process is based on the research. The Three Pagoda intermittent absorption model was established, and the calculation method for the spray amount of the three pylon intermittent absorption model was developed. The results of the transformation of the constant chlorine gas absorption system proved that the absorption efficiency and capacity of the three pylon intermittent absorption model could meet the production requirements when the absorption system was full load, and the exhaust emission reached the national environmental protection standard. And the content of effective chlorine can reach more than 10%, and the absorption solution can be used as an index of the by-product of sodium hypochlorite, and the utilization rate of liquid base is 10% and the absorption cost is reduced by about 30%. compared with the original chlorine absorption device.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TQ124.4

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本文編號(hào)：2078263