| A relatively large portion of radwaste is combustible. The scattered storage of huge waste not only needs a large room, but also is not convenient to take. Moreover, the chronically stored radwaste may result in the radioactive contamination of the storage room and even the accident of environment pollution if the packing materials are damaged when the accidents such as fire hazard occur.Based on the requirements of national laws and standards, the radwaste should be handled in advance before sent to the national place of radwaste disposal. In order to decrease the storage and the disposal fare, eliminate the possinility of radioactive leakage, it is necessary to reduce the waste volume and stabilize it.Incineration complies with the principal of minimum radwaste, and is the best method of reducing the volume and stabilizing. The combustible waste (in liquid or in solid) is placed into the high temperature furnace to burn, and the produced inert cinder or ash can be solidified further to achieve the purpose of reducing the volume and stabilization. The combustion disposal of combustible radwaste can greatly reduce the volume and the weight. The coefficient of reducing volume can reach 10 to 100, and the coefficient of reducing weight 20 to 200.This design discusses in detail the role, composition, and technological condition of main technology system of radwaste combustion in China Academy of Engineering Physics, and the structure design of key equipments, and the composition of aid systems. The feasibility and the reliability of design of main technology systen, flue gas purification system, and other chief nonstandard equipments have been demonstrated by the engineering proof test. The designindices for the disposal ability, the coefficient of reducing volume, the coefficient of reducing weight, the carbon residue in ash, and the pollutant discharge concentration of flue gas, have also been discussed. The experiences and the existing problems of operation of Incineration systems have been summarized.Experimental results show that the system can handle solid waste, oil waste, and graphite waste. The disposal ability for solid waste is about 23.9—26.0 kg/h, for oil waste 7.5—8.2 L/h, for graphite waste 5kg/h. The coefficient of reducing volume is 51.8 to 89.3, and the coefficient of reducing weight is 17.0 to 28.6. The waste burns completely, and the carbon residue is less than 5%. The CO concentration in flue gas satisfies the national discharge standard. The purification technology of flue gas is efficient. The dust, the heavy metal, and the acid pollutant after the purification, which satisfy the discharge standard, can be discharged. The cracker and the thermal decomposition furnace performance well, and meet the demands of breaking, pyrolysis, and core—burning of waste.The new points of this thesis are: (a)this Incineration system is the first system for the pyrolysis of radwaste, which is developed and set up by ourselves and has applied to engineering disposal; (b)the different Incineration technologies for solid waste, oil waste, and graphite waste can be carried out in the same system; (c)the combustion system needs little or no aid fuel; (d)the system performance has been tested by the engineering proof.The results of this thesis provide experiences for the research and the design of combustion system of radwaste and bases for its appli cations.
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