Compact anti-blocking radioactive flue gas cooling device

Abstract

The invention relates to a compact anti-blocking radioactive flue gas cooling device. The compact anti-blocking radioactive flue gas cooling device comprises an inner shell, an ash bucket installed at the bottom of the inner shell and a gas admission pipe arranged at the top of the inner shell and communicated with the inner shell, the inner shell comprises a barrel and a cone connected with the barrel, a reflecting screen is arranged at the bottom of the cone, vent holes are formed in the top of the reflecting screen, an annular gap is formed between the reflecting screen and the inner wall of the cone, and an inner cavity of the cone is communicated with an inner cavity of the ash bucket through the vent holes in the reflecting screen and the annular gap; and a water cooling jacket is arranged at the outer side of the inner shell and wraps the outer side of the barrel and the outer side of the cone, and the two ends of the water cooling jacket are connected with a cooling water filling pipe and a cooling water discharging pipe respectively. When the compact anti-blocking radioactive flue gas cooling device is used, high-temperature flue gas moves along the inner shell of the device and is in contact with the water cooling wall, so that a cooling effect is achieved; and meanwhile, high-temperature dust-containing flue gas tangentially enters the compact anti-blocking radioactive flue gas cooling device, and particulate matters in the flue gas can be preliminarily captured and dedusted under the action of centrifugal force.

Description

technical field [0001] The invention relates to the field of cooling and purifying radioactive high-temperature flue gas, in particular to a compact anti-blocking radioactive flue gas cooling device. Background technique [0002] Nuclear facilities such as military industry, scientific research, experiments, and nuclear power plants will generate a large amount of radioactive waste during operation and maintenance, of which combustible waste accounts for a large proportion (about 50%), such as plastics, rubber, cotton fabrics, wood, resin, waste oil, etc. , the average specific activity of most solid combustible wastes is ≤1×10 5 Bq / kg range. As one of the earliest radioactive waste volume reduction technologies, incineration is very suitable for the treatment of these low-level radioactive solid wastes. It can not only achieve a large volume reduction (volume reduction ratio can reach 80-120), but also realize the inorganicization of waste , which facilitates final dispos...

AI Technical Summary

Problems solved by technology

For conventional flue gas cooling equipment, especially the tube-and-tube heat exchanger, the inner tube is relatively thin, and it is easy to be blocked by dust and other particles in the flue gas during long-term operation. It is not easy to clean and maintain the blocked cooling equipment; at the same time, the conventional flue gas cooling device does not have the function of preliminary separation of particles in the flue gas, and it is necessary to add particle separation equipment in the subsequent process, which cannot meet the needs of compact integration. Design requirements

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