FORMATION OF CHLORINATED ORGANICS DURING SOLID-WASTE COMBUSTION

被引：40

作者：

GULLETT, BK

BRUCE, KR

BEACH, LO

机构：

[1] United States Environmental Protection Agency, Air and Energy Engineering Research Laboratory, Research Triangle Park

[2] Acurex Corporation, Research Triangle Park

来源：

WASTE MANAGEMENT & RESEARCH | 1990年 / 8卷 / 03期

关键词：

Chlorinated organics; chlorine; combustion; copper chloride; Deacon process; dioxins; furans; hydrochloric acid; mechanisms; municipal waste;

D O I：

10.1016/0734-242X(90)90064-T

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The formation mechanisms of the precursors of polychlorinated dibenzo-p-dioxin (PCDD) and polychlorinated dibenzofuran (PCDF) were examined in a laboratory reactor. Both homogeneous and heterogeneous reactions were studied between 200 and 800 °C with HCl, Cl2, and phenol as reactants in a simulated flue gas containing oxygen. Analysis of the reactor effluent showed that homogeneous phase production of chlorophenols and non-chlorinated dioxin and dibenzopdioxin and dibenzofuran, benzofuran potential precursors to PCDD and PCDF, was related to HCl concentration, reaching a maximum formation level around 650 °C. However, Cl2 produced a greater variety of chlorinated aromatics at levels over three orders of magnitude greater than with HCl, with product concentrations reaching maximum formation levels around 350 °C. Heterogeneous tests at 450 °C using a CuCl catalyst increased formation of chlorinated organics and PCDDs and identified the major chlorinating reactant to be Cl2. © 1990.

引用

页码：203 / 214

页数：12

共 24 条

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