基于玻璃态膜组件的油气污染排放控制技术研究
Experimental research of oil vapor pollution control with galssy membrane separation technology
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摘要: 针对加油站收油和发油过程中产生的油气污染，采用新型的玻璃态油气截留型PEEK中空纤维膜组件，在自行设计建造的膜分离设备上，分别考察了膜组件和整个膜系统对油气污染治理和回收的效果，提出了一种研究膜法油气回收过程的新思路。对于膜组件的分离实验结果发现，处理流量在2.5~7.5 m3/h、系统压力在525~825 Pa之间的中试规模运行条件下，膜组件对油气氮气混合气有很好的净化能力，尾气能够达标排放；在渗余的富油气返回油罐的模拟加油站实际运行情况的循环实验条件下，尾气也低于25 g/m3的国标。Abstract: A new type of vapor retained galssy membrance， which was based on PEEK hollow fiber membranes， was used to control the oil vapor pollution during the course of receieving and transfering gasoline in oil stations.The efficiencies of the membrance module and the membrance system were evaluated respectively in the facalities which were designed and set up by ourselves， and the results of these experiments may provide a new method for membrance seperation on oil vapor recovery. It was found that the membrance module had high efficiency for the seperation of VOCs-N2 mixed gases， with the operational capacity from 2.5 m3/h to 7.5 m3/h and the systemic pressure from 525 Pa to 825 Pa. The outlet vapor after treatment can meet the national standard. When the residue vapor-enriched gas was returned to the oil tank to simulate the continuously cycle test， the concentration of VOCs in the outlet was also below 25 g/m3.
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