共查询到19条相似文献,搜索用时 46 毫秒
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对生物法净化低浓度甲苯废气的适宜装置及其操作特性的研究表明,生物膜填料塔对低浓度甲苯废气的净化性能优于筛板塔及鼓泡塔;生物膜填料塔采用逆流并在液气比0.03~0.1、气速(30~60)m·h~(-1)的条件下操作时,低浓度甲苯废气净化效率可保持在90%以上.经实验验证,本生物膜填料塔对废气中甲苯的同系物同样具有净化作用.并且对再生胶厂、印刷厂、铸造厂、油漆厂等企业的实际生产废气也有良好的净化效果. 相似文献
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工业生产会产生一些挥发性有机废气,给环境和人们的生活带来严重的威胁。因此,在研究废气治理新技术过程中发展出了生物净化技术,其存在效率高、投资费用低、无污染、安全性高等优点。主要分析生物法处理挥发性有机废气存在的优势,并就如何有效发挥生物法优势提出了具体的对策。 相似文献
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ISOBARIC VAPOR LIQUID EQUILIBRIUMS OF OCTANE ETHYL ACETATE AND OCTANE-ISOPROPYL ACETATE SYSTEMS 下载免费PDF全文
The isobaric vapor-liquid equilibrium data of systems of ethyl acetate_((1))-n-octane_((2)) andisopropyl acetate_((1))-n-octane_((2)) were determined at 0.0709 MPa and 0.1013 MPa by using a modifiedRose-Williams still.The experimental data were tested for thermodynamical consistency and correlatedsatisfactorily with p-T equation of state and Wilson equation. 相似文献
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The Purification experiments of waste gas containing low concentration toluene were made in trickling biofilter with ceramic spheres. The effects of liquid flow rate,gas flow rate,pH of circulation liquid, and toluene concentration in inlet gas on the purification efficiency of trickling biofilter were investigated. The pressure drop of the trickling biofilter was also measured during experiments.Increasing liquid flow rate and gas flow rate resulted in the decrease of purification efficiency of trickling biofilter. The highest purification efficiency of trickling biofilter was found at the circulation liquid pH of 7. The porosity of the packing material at the inlet of gas was higher than that at the outlet of gas in biofilter after continuous operation in 50 days. The decrease in the porosity of packing material caused a great increase in the pressure drop of the biofilter. 相似文献
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在一定的温度、压力下,利用乙酸乙酯溶解竹材中的木质素,乙酸乙酯通过蒸馏回收后,可以反复利用;而得到的高纯度木质素是重要的化工原料,整个过程形成一个封闭循环系统,基本上无三废排放。研究结果表明:乙酸乙酯浓度为80%,液固比为10∶1,反应温度155℃下保温3h,木质素的分离效果最佳。 相似文献
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Ethyl acetate cannot be easily removed from either mixtures with ethanol and water because of the minimum ternary azeotrope or from methyl ethyl ketone because of the proximity of boiling points. Ethyl acetate can be readily recovered from mixtures with these two by using extractive distillation in which the extractive agent is a higher boiling oxygenated, nitrogenous or sulfur-containing organic compound or a mixture of these. 相似文献
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乙酸乙酯合成实验的改进 总被引:4,自引:0,他引:4
实验室用石棉网直接加热进行酯化反应制备乙酸乙酯代替用油浴加热制备乙酸乙酯。这种实验方法的改进,缩短了加热时间,节省原料和仪器,产率与油浴相当,操作简单。 相似文献
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The continuous, steady-state saponification of ethyl acetate in the viscous-flow regime was studied in curved-tube reactors of helical coil and figure-eight coil configurations, with chemical reaction conversions being measured with electrolytic conductivity cells. Previous work by others on residence-time distribution and axial dispersion showed that helical coils should give higher chemical-reaction conversion than straight tubes. In this study, figure-eight coil reactors yielded higher conversions than helical-coil reactors of the same curvature ratio. This improvement is believed to be due to the crossing of flow from one side of the tube to the other at the intersection of the lobes of figure-eight coil reactors. 相似文献
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