| Generation of industrial hazardous waste increases rapidly with the increase of the productive development and improvement of industry. Toxicity, explosibility, causticity, inflammability, chemical reactivity and infectiousness of hazardous waste do great harm to human health and surroundings. If hazardous waste is not treated appropriately, poisonous matters such as heavy metal, chemical matters and pathogenic microorganism could transmit to the circumstance by soil, air and water. At present, treatment of industrial hazardous waste in China is in a primary stage, with technology falling behind and standard not being built. Thus, research of industrial hazardous waste treatment is of great benefit to control pollution and ensure human health. The government, science and technology circle, industry circle and environmental protection circle has pay plenty attention to this object. Among the present industrial hazardous waste treatment, incineration is well developed because of its decrement, harmless, resource and low secondary pollution. In this work, pyrolysis and combustion characteristics of hazardous waste powder and particles are carried out. Hazardous waste treatment procedure and incinerator of 1500kg/h are designed.Pyrolysis experiments of industrial hazardous waste powder are carried out by using TG-FTIR. The change law of pyrolysis characteristic temperatures, pyrolysis yields, released pyrolysis gas with heating rate, final temperature and particle size are discussed. The release temperature range of CO, CO2, NH3 and CH4, gas release and maximum release rate temperature are curtained. Pyrolysis kinetics model are proposed. Preexponential factor and activation energy of the pyrolysis process are calculated.Pyrolysis characteristics of industrial hazardous waste particle are discussed by using pyrolysis and combustion experimental rig. Pyrolysis yields and influence of heating rate and final temperature on pyrolysis characteristics are discussed. Pyrolysis kinetics model are developed and pyrolysis kinetics parameters are calculated. Combustion characteristics of hazardous waste and influence of excess air coefficient and furnace temperature on combustion weight loss rate are discussed.Combustion experiments of industrial hazardous waste particles are carried out by using fixed bed experimental rig. Influence of primary air flow, moisture, bed height and particle size on weight loss rate, combustion rate, igration front speed, highest temperature within the bed, combustion gas and O2 concentration are discussed.Combustion characteristics of industrial hazardous waste on grate furnace are studied with PHOENICS. One-dimensional unstable state model is developed. Basic control equation, moisture evaporation model, volatile release model, char combustion model and NO generation model are developed. Calculation results of bed weight, temperature distribution and combustion gas are obtained. Influence of primary air flow on combustion rate, highest temperature and combustion gas in the bed are discussed. The results show that calculated results are in agreement with experimental results.Treatment procedure of 1500kg/h industrial hazardous waste is determined and incinerator is designed. Incinerator structure, thermal and hindrance are obtained. Influences of furnace temperature on CO, NOx and dust concentration are discussed. The monitoring show that release of harmful gas, dust, heavy metal reaches the standard. Blackness, dioxins in ash residue and dioxins in fly ash satisfy the national standard.
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