The Study On Thermal Disposal Characteristics Of Typical Hazardous Waste

With the rapid development of our country's economy, the yield of hazardous waste is increasing faster and faster. Because of its broad sources, various species and complex characters, the problem of hazardous waste disposal becomes much more signifiable and it needs to be solved urgently.As a recommendatory technology of our country's hazardous wastes administration, thermal treatment, represented by pyrolysis and incineration technology, has been widely used and well developed. However, the domestic study of industrial hazardous wastes' characters is barely underway. The research methods haven't matured. It causes serious problems in the design and function of multifarious disposal device.This dissertation attempts two new analysis techniques (thermodynamic equilibrium analysis, TG-FTIR united device) to study hazardous waste. The characteristics of flue gas and contamination in the thermal disposal process are analyzed, and the offsprings of the pyrolysis, gasification, incineration process are simulated using FactSage package in domestic advancing edge. The flue gas and contamination of hazardous waste is also traced by TG-FTIR in a real-time mode, and finaly a fast and valid method is explored in this field. Above all, concentration changes of CO₂, H₂O, CO, CH₄, SO₂, NOx, HCN, CH₃OH etc in different TG conditions are mainly focused on. Then the consult for industry application of design and function is expected.A preceding feasibility on the neutralization-incineration project of acid tar, an example of a typical liquid hazardous waste, is researched. The intermediate product "tar-residue" is destructed in a tube furnace and a fluidized bed incinerator in the condition of different temperatures and granularities etc. The emission concentration of SO₂ is mainly focused on and be compared with the national standard. Some helpful consults for the thermal disposal project of this kind of hazardous waste are obtained.