Nitrogen Oxide Limits Displace Particulate As Binding Constraint
Regional regulation has largely settled the particulate question, with most large emitters now meeting limits through precipitators or fabric filters already installed. Nitrogen oxides are where the current tightening happens, across coal power, cement kilns, glass furnaces and waste incineration alike. Chinese ultra-low emission limits now require outlet concentrations below 50 milligrams per cubic metre on coal units, and Indian norms have moved toward comparable levels. That shift moves spending decisively toward catalytic systems carrying recurring consumable revenue rather than the one-off dust removal equipment that dominated the previous decade.
Market Impact: Covers 140 gigawatts of coal capaci








