Fluidized bed reactor for treating radioactive waste graphite

Abstract

The invention relates to a fluidized bed reactor for treating radioactive waste graphite, which belongs to the technical field of radioactive waste treatment and comprises a combustion furnace, wherein a feeder and an ignition tuyere are arranged on the cylindrical surface of the combustion furnace close to the lower section, the bottom of the combustion furnace is connected with an ash discharge system, an air supply outlet is further arranged at the bottom of the combustion furnace, an air outlet is arranged at the top of the combustion furnace, and the whole reactor is fixed on a rack. Radioactive waste graphite to be treated enters the combustion furnace through a feeder, waste is ignited through the ignition tuyere, and air preheated by an air preheater is fed into the combustion furnace through the air supply outlet; and air in the combustion furnace and graphite particles form a fluidized state in the combustion furnace and are fully combusted, residue ash generated by combustion enters an ash discharging system under the action of gravity to be collected, and tail gas generated by combustion is discharged out of the combustion furnace through the air outlet. The fluidized bed reactor is simple in structure and convenient to operate, and the high volume reduction ratio can be achieved by conducting incineration heat treatment on graphite through the fluidized bed treatment technology.

Description

technical field [0001] The invention belongs to the technical field of radioactive waste treatment, in particular to a fluidized bed reactor for treating radioactive waste graphite. Background technique [0002] With the continuous development of nuclear power in my country, the power generation of nuclear power has increased year by year. Compared with coal-fired power generation, nuclear power generation is equivalent to reducing the burning of standard coal by 49.2843 million tons, reducing the emission of carbon dioxide by 129.1249 million tons, reducing the emission of sulfur dioxide by 418,900 tons, and reducing the emission of nitrogen oxides by 364,700 tons. As a clean energy source, nuclear energy can effectively alleviate the consumption of fossil fuels, reduce greenhouse gas emissions, and reduce the problem of uneven energy distribution. [0003] In many nuclear reactors, graphite is widely used in gas-cooled reactor moderators, reflective layers and Structural...

AI Technical Summary

Problems solved by technology

The volume of waste graphite is huge, and a good volume reduction effect can be achieved through incineration heat treatment technology, but the fixed bed combustion technology used at this stage still cannot achieve a good volume reduction ratio after incineration treatment

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