首页> 外国专利> Process for the simultaneous scrubbing of NOx, SO2, HCl, HF and other flue gas pollutants, preferably from power station exhaust gases from fossil-fuelled power stations or heat and power stations, with addition of iron complex compounds and organic acids

Process for the simultaneous scrubbing of NOx, SO2, HCl, HF and other flue gas pollutants, preferably from power station exhaust gases from fossil-fuelled power stations or heat and power stations, with addition of iron complex compounds and organic acids

机译：同时洗涤NOx，SO2，HCl，HF和其他烟道气污染物的方法，最好是从化石燃料发电站或热力发电厂的发电站废气中加入铁络合物和有机酸

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摘要

The invention relates to a process for the simultaneous scrubbing of NOx, SO2, SO3, HCl, HF and other flue gas pollutants, in particular from power station exhaust gases. It has surprisingly been found that, according to the invention, the simultaneous scrubbing of NOx can be considerably increased and accelerated if the polycarboxylic acid (EDTA included) and/or phosphonic acid used is or are complexed with iron(II) sulphate prior to the addition to the scrubbing water. The polycarboxylic acid solutions (EDTA included) are acidified to an extent depending on pH, using mineral acids, preferably sulphuric acid, when polycarboxylic acids having an alkaline character, whose solutions are in the alkaline range, are used, iron chelate, preferably iron(II) sulphate, being simultaneously added in this mixing process.

机译：本发明涉及同时洗涤NO x，SO 2，SO 3，HCl，HF和其他烟道气污染物的方法，特别是从电站废气中洗涤。令人惊讶地发现，根据本发明，如果在使用之前将所用的多元羧酸（包括EDTA）和/或膦酸与硫酸铁（II）或与硫酸铁（II）络合，则可以显着增加和加速同时净化NOx。除了擦洗水。当使用具有碱性特性的多羧酸溶液（在溶液中处于碱性范围）时，使用无机酸（优选硫酸）将多羧酸溶液（包括EDTA）酸化至取决于pH的程度。 II）硫酸盐，在该混合过程中同时加入。

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公开/公告号DE3414471A1

专利类型
公开/公告日1985-10-17

原文格式PDF
申请/专利权人 HOELTERHEINZDIPL.-ING.;
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申请/专利号DE19843414471
发明设计人 HOELTERHEINZDIPL.-ING.;IGELBUESCHERHEINRICHDIPL.-ING.;GRESCHHEINRICHING.;DEWERTHERIBERTDIPL.-ING.;
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申请日1984-04-17
分类号B01D53/34;A62D3/00;
国家 DE
入库时间 2022-08-22 07:57:04

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