VOCS废气净化的详细介绍

Release time：

2023/02/06 20:25

但如果长期不更换活性炭，孔隙堵塞了就起不到吸附净化废气的作用，导致废气未经收集处理直排外环境，对大气造成严重污染。

气催化燃烧设备,燃烧催化设备，voc废气催化燃烧设备技术是一种新型的废气净化方法。它是在催化氧化和蓄热式焚烧法（RTO）的基础上，采用了一系列节能设计和材料继而发展成为现代先进的有机废气处理技术。

目前吸附法主要用于低浓度有机物废气净化处理风量大、浓度低(≤800mg/m3)、无颗粒、无粘度、常温。活性炭净化率高(活性炭吸附率可达95%以上)，用途广泛，操作简单，投资少。吸附饱和后，需要更换新的活性炭，要。更换下来的饱和活性炭还需要找专业人员进行危废处理，运行成本高。燃烧技术燃烧技术只是在高温和充足的空气下，将挥发性有机物完全燃烧，分解为CO2和H2O。燃烧法适用于各种有机物废气，可分为直接燃烧法、热燃烧法和催化燃烧法。以下VOCs的定义和危害现状VOCs是指在一定条件下挥发性有机化合物的总称。挥发性有机物主要包括非甲烷总烃、含氧化合物、卤代烃、含氮化合物、含硫化合物等。

该过程不断循环交替，有效地降低了废气处理后的热量排放，同时节约了废气氧化升温时的热量损耗，使得废气在高温氧化过程中保持着较高的热效率（热效率95%左右），其设备可靠、操作简单、维护方便，运行费用低，有数据显示，VOCs废气的净化率高达99.5%。

活性炭是一种经过特殊处理的炭，它具有很强的吸附能力，常被企业用来净化工业废气，废气中的污染物质会被截留在活性炭孔隙中，从而防止污染大气外环境。

燃烧法处理VOCs废气处理效率高，但如果VOCs废气含有S、N等元素，燃烧后直接排放的废气会导致二次污染。通过热燃烧或催化燃烧处理废气，其净化率相对较高，但投资和运行成本极高。因为废气排出的点多且分散，很难实现集中收集。需要多套燃烧装置，并且需要大的占地面积。热燃烧更适合24小时连续运行、浓度高且稳定的废气工况，不适合间歇式生产线。除尘布袋品种多，应用范围广。一个好的除尘布袋直接影响袋式除尘器的集尘功能和排放标准。

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