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锅炉废气处理

来源:admin(传梦环保整理发布)   时间:2018-08-28

锅炉废气处理


锅炉烟气中所含粉尘(包括飞灰和炭黑)、硫和氮的氧化物都是污染大气的物质,未经净化时其排放指标可能达到环境保护规定指标的几倍到数十倍。控制这些物质排放的措施有燃烧前处理、改进燃烧技术、除尘、脱硫和脱硝等。借助高烟囱只能降低烟囱附近地区大气中污染物的浓度。 烟气除尘所使用的作用力有重力、离心力、惯性力、附着力以及声波、静电等。对粗颗粒一般采用重力沉降和惯性力的分离,在较高容量下常采用离心力分离除尘。 中央除尘具有较高的除尘效率。

烟气脱硫有吸收法和催化氧化法。锅炉烟气经过喷淋除尘洗气降温后进入等离子废气处理设备。锅炉烟气脱硫除尘是关键,我公司先采用除尘器除去粉尘,在用脱硫塔除去硫化物,最后经等离子除掉化学性质稳定的污染气体。

低温等离子体技术处理污染物的原理为:在外加电场的作用下,介质放电产生的大量携能电子轰击污染物分子,使其电离、解离和激发,然后便引发了一系列复杂的物理、化学反应,使复杂大分子污染物转变为简单小分子安全物质,或使有毒有害物质转变成无毒无害或低毒低害的物质,从而使污染物得以降解去除。因其电离后产生的电子平均能量在10ev ,适当控制反应条件可以实现一般情况下难以实现或速度很慢的化学反应变得十分快速。作为环境污染处理领域中的一项具有极强潜在优势的高新技术,等离子体受到了国内外相关学科界的高度关注。

锅炉废气处理方案

废气源→中央除尘(除去锅炉废气中的粉尘和冷凝部分雾状气体,降低气体温度)→高效除尘脱硫塔(吸收掉粉尘以及颗粒物,吸收二氧化硫,硫化氢等酸性气体,为等离子提供优良的运行环境)→低温等离子设备(破坏废气分子结构,转化为无污染物质)→光氧催化设备(进一步氧化分解废气)→高压风机(高压的吸力作用下将风抽出车间)→洗涤塔(洗涤塔水洗小分子碎片,利于检测达标)→烟囱高空排放。

烟气中氮氧化物主要是一氧化氮。烟气脱硝有光氧催化分解法、选择性催化还原法,也有采用高温活性炭吸收脱硝的。

燃煤锅炉在运行中必然要排出大量炉渣和由除尘器收集的飞灰,一般用水力或机械的方法清除送至堆渣场。

锅炉的灰渣还可以在利用,人们把灰渣利用在建筑行业,如水泥、砖和混凝土等建筑材料,二次利用,保护环境。

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我公司主要经营:脱硫塔、玻璃钢脱硫塔、烟气脱硫塔、旋流板脱硫塔、除尘脱硫塔、脱硫塔防腐、砖厂脱硫塔、沼气脱硫塔、麻石脱硫塔、废气处理、有机废气处理设备、旋流板塔、旋流板脱硫塔、玻璃钢脱硫塔、活性炭吸附RCO、催化燃烧、废气处理设备、VOCs废气处理设备、锅炉除尘器设备、UV光氧催化、喷淋塔、旋流塔、活性炭环保箱、水帘柜、中央除尘、烤漆房流水线等,并可根据客户需求进行设计,订做各类涂装设备。本公司自成...

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