Radioactive waste treatment system and treatment method including same

A radioactive waste and treatment system technology, applied in the field of radioactive waste treatment system, can solve the problems of complex equipment and operation, strict raw material requirements, large amount of fly ash, etc., and achieve long residence time, high volume reduction ratio and simple tail gas treatment Effect

Active Publication Date: 2017-03-22
EAST CHINA UNIV OF SCI & TECH +1
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Problems solved by technology

[0006] The technical problem that the present invention aims to solve is to overcome the defects of strict requirements on raw materials, easy to wear, large amount of fly ash, low temperature, complicated equipment and operation existing in existing radioactive waste treatment methods, and provide a radioactive waste processing system and its processing method

Method used

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  • Radioactive waste treatment system and treatment method including same
  • Radioactive waste treatment system and treatment method including same

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Embodiment 1

[0060] The process flow diagram and structural diagram of the processing system of the present embodiment are as follows: Figure 1~2 shown.

[0061] The treatment system of radioactive waste provided by the present embodiment comprises a fixed-bed gasifier 1, a cyclone separator 2, a secondary combustion chamber 3, a quenching tower 4 and a purification system connected in sequence; the fixed-bed gasifier The roof of the furnace 1, the upper section of the furnace, the lower section of the furnace and the bottom of the furnace are respectively provided with a feed inlet 101, a crude gas outlet 103, a gas inlet 105 and a solidified slag outlet 106, and the crude gas outlet 103 is connected to the The cyclone separator 2 is connected, the gas outlet of the cyclone separator 2 is connected with the second combustion chamber 3, the gas outlet of the second combustion chamber 3 is connected with the quench tower 4, and the second combustion chamber 3 is also provided with a A hea...

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Abstract

The invention discloses a radioactive waste treatment system and a treatment method including the same. The treatment system comprises a fixed bed gasifying furnace, fine ash separation equipment, a secondary burning chamber, a quenching tower and a purifying system which are in sequential connection, a feeding port, a coarse fuel gas outlet, a gas inlet and a solidifying residue discharging port are arranged at the top of the fixed bed gasifying furnace, on the upper section of a hearth, on the lower section of the hearth and at the bottom of the fixed bed gasifying furnace, the coarse fuel gas outlet is connected with the fine ash separation equipment, a gas outlet of the fine ash separation equipment is connected with the secondary burning chamber, a gas outlet of the secondary burning chamber is connected with the quenching tower, the secondary burning chamber is further provided with a heat exchange passage which comprises a cold water inlet pipe and a hot water outlet pipeline, and the hot water outlet pipeline is sequentially connected with a steam generator, a gas mixer and the gas inlet of the fixed bed gasifying furnace. The treatment system combines fixed bed gasifying technology with steam reforming technology, thereby being capable of substantially reducing volume of radioactive waste and stabilizing and solidifying nuclide.

Description

technical field [0001] The invention relates to the field of radioactive nuclear waste treatment, in particular to a radioactive waste treatment system and a treatment method thereof. Background technique [0002] Disposal of radioactive waste is safe, expensive and highly dependent on the volume of waste being disposed of. Common organic wastes include: radioactive resins, combustible dry waste, and chemical waste liquid, etc., with complex components and forms. Therefore, reliability, volume reduction ratio and adaptability are important indicators for evaluating the radioactive waste treatment process. [0003] The curing process selects a curing medium with high stability, generates mineral-like substances with radioactive waste under high temperature and other conditions, and fixes radionuclides. This method can immobilize radionuclides for an extremely long time and is the key to the safe disposal of radioactive waste. Its advantages include: low leaching rate, larg...

Claims

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Application Information

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IPC IPC(8): G21F9/06G21F9/20G21F9/30G21F9/34
CPCG21F9/06G21F9/20G21F9/30G21F9/34
Inventor 李伟锋李超赵辉刘海峰许建良龚欣王辅臣于广锁王亦飞陈雪莉代正华郭庆华郭晓镭王兴军梁钦锋刘霞陆海峰龚岩王立赵丽丽
Owner EAST CHINA UNIV OF SCI & TECH
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