Plasma furnace for comprehensively treating solid and liquid wastes

Abstract

The invention discloses a plasma furnace for comprehensively treating solid and liquid wastes. The plasma furnace comprises a furnace body consisting of a top cover, a furnace body and a furnace bottom, wherein a hearth is formed in the furnace body and is divided into a gasifying area and a melting area; a high-temperature refractory fiber layer, a high-temperature insulating layer and an insulating fiber layer are sequentially arranged between the hearth and a casing of the furnace body from the inside to the outside; a solid feeding channel, an exhaust channel, a waste liquid feeding spray opening, a plasma generator installation interface and a discharging interface are arranged on the furnace body. By implementing the plasma furnace disclosed by the invention, the capability of simultaneously treating solid waste and liquid waste can be realized; in addition, the plasma furnace has the characteristics of simple structure, good convenience for detaching and maintaining, high utilization rate of heat and the like.

Description

technical field [0001] The invention relates to the technical field of waste treatment in nuclear power plants, in particular to a plasma furnace for comprehensive treatment of solid and liquid waste. Background technique [0002] A certain amount of radioactive waste will inevitably be generated during the operation and maintenance of nuclear power plants, and these radioactive wastes must be treated, for example, by radionuclide stabilization and containment before they can be finally disposed of. At present, for solid radioactive waste, the common treatment process of domestic nuclear power plants is cement solidification technology, but its capacity is too large, which brings great pressure to the disposal of radioactive waste. [0003] In addition, a plasma technology has emerged in the prior art to treat radioactive waste. This plasma technology uses the characteristics of high temperature and energy density of thermal plasma to quickly pyrolyze waste at high temperat...

AI Technical Summary

Problems solved by technology

[0007] First of all, in the existing plasma treatment technology, it is difficult to apply to the treatment of solid waste and liquid waste at the same time;

[0008] Moreover, in the formation process of the glass solidified body, there are stability problems. When the glass body flows out from the plasma melting furnace, due to reasons such as excessive temperature difference, when the glass body is formed, it is easy to produce situations such as delamination and cracking of the glass solidified body. Or there is a situation where the melt solidifies and cannot be discharged;

[0009] In addition, existing plasma furnaces also have disadvantages such as complex structure, low heat utilization rate, and inconvenient disassembly, maintenance and repair.

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