化工进展2024，Vol.43Issue(8)：4642-4653,12.DOI:10.16085/j.issn.1000-6613.2023-1130
陈腐垃圾掺烧对垃圾炉焚烧特性的影响
Influence of mixed burning of aged refuse on the incineration characteristics of waste furnace
摘要
Abstract
In order to study the influence of mixed burning of aged refuse on incineration characteristics of waste furnace,a mechanical grate incinerator of a waste incineration plant in Ziyang city,Sichuan province was taken as the research object.Its disposal capacity was 375t/d,and the calorific value of waste was 7315kJ/kg.FLUENT and FLIC software were used to simulate and analyze the incineration characteristics of the waste incinerator under different mixing ratios and heating value conditions of aged refuse.Field tests were also carried out.The results showed that as the mixture ratio of aged refuse increased from 0 to 30%,the mass fraction of O2 at the outlet of the incinerator increased,while the flue gas temperature at different height sections decreased.Additionally,the moisture evaporation,volatile pyrolysis and fixed carbon combustion rates on the surface of the waste bed were decreased by 19kg/(m2·h),29kg/(m2·h)and 25kg/(m2·h),respectively.The waste incineration end position lagged by 0.69m.When the heating value of aged refuse raised in the range of 2110-5156kJ/kg,the mass fraction of O2 at the outlet of the incinerator decreased,and the flue gas temperature at different height sections increased.The moisture evaporation,volatile pyrolysis and fixed carbon combustion rates on the surface of the waste bed were improved by 14kg/(m2·h),14kg/(m2·h)and 11kg/(m2·h),and waste incineration end position advanced by 0.85m.Therefore,it is recommended to control the calorific value of the blended waste within the range of 6849-8374kJ/kg,under the premise that the incineration temperature was greater than 1123K and the calorific value design of the incinerator was satisfied.These simulation results provided a practical engineering solution for mixed burning of aged refuse.关键词
混燃/陈腐垃圾/计算流体力学/两相流/反应动力学Key words
co-combustion/aged refuse/computational fluid dynamics/two-phase flow/reaction kinetics分类
能源科技引用本文复制引用
曾武清,王润其,武丽雯,刘晨,马洪亭,王予,卜庆国,马硕,白东明,张宗建,张鹏,马丹丹,王圣博..陈腐垃圾掺烧对垃圾炉焚烧特性的影响[J].化工进展,2024,43(8):4642-4653,12.基金项目
十四五国家重点研发计划(2022YFC3902300). （2022YFC3902300）
