Solid waste incineration is a major emission source of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs). The injection of N- and S-containing compounds is an effective way to suppress the formation of PCDD/Fs, but this approach is still shortcoming because additional pollutants such as NH₃ and SO_x are emitted. To avoid the secondary pollutions, a de novo synthesis inhibition mechanism in the presence of CaO was postulated to transform CuCl₂ to CuO and deplete Cl₂ and HCl. Chlorobenzenes (CBzs), which are indicators and precursors of PCDD/Fs, were adopted to prove the inhibitory effect of CaO at 400 °C, using both simulated synthetic ash and extracted air pollution control residues. As the molar ratio of CaO to CuCl₂ exceeded 3, the residual carbon increased, and the inhibition efficiency of CBzs exceeded 93%. This performance is superior to the corresponding performance of NH₄H₂PO₄, which has been proved to be a potential inhibitor. Furthermore, with CaO, chlorides remained in the solid phase and had inactive catalytic performance; and they were the major products rather than HCl, Cl₂ and Cu₂OCl₂. The addition of CaO during waste incineration therefore can facilitate the abatement of PCDD/Fs contamination and reduce the emissions of acid gas simultaneously.

固体废物焚烧是多氯二苯并-对-二恶英和多氯二苯并呋喃（PCDD / Fs）的主要排放源。注入含N和S的化合物是抑制PCDD / Fs形成的有效方法，但是该方法仍然存在缺陷，因为会排放出其他污染物，例如NH ₃和SO _x。为避免二次污染，假定存在CaO时从头合成抑制机理将CuCl ₂转化为CuO并消耗Cl _2。和HCl。采用氯苯（CBzs）作为PCDD / Fs的指示剂和前体，使用模拟合成灰分和提取的空气污染控制残留物，证明了CaO在400°C时具有抑制作用。当CaO与CuCl ₂的摩尔比超过3时，残余碳增加，并且CBzs的抑制效率超过93％。该性能优于已被证明是潜在抑制剂的NH ₄ H ₂ PO ₄的相应性能。此外，使用CaO时，氯化物保留在固相中，并具有惰性催化性能。它们是主要产品，而不是HCl，Cl ₂和Cu ₂ OCl ₂。因此，在废物焚烧过程中添加CaO可以减轻PCDD / Fs污染，同时减少酸性气体的排放。