Heating furnace

Abstract

The invention relates to a heating furnace comprising a furnace shell with a lower opening and a furnace pipe assembly arranged in the furnace shell in a penetrating manner. The furnace pipe assembly comprises a furnace pipe and a furnace table arranged in the furnace pipe and capable of ascending and descending; the position between the periphery of the lower portion of the furnace pipe and the bottom of the furnace shell is sealed through a lower sealing assembly; the upper portion of the furnace pipe is provided with a furnace pipe top connection pipe; the position between the periphery of the furnace pipe top connection pipe and a top plate of the furnace shell is sealed through an upper sealing assembly; and a plurality of heating elements inserted from the top of the furnace shell are arranged between the inner wall of the furnace shell and the furnace pipe. The heating furnace can heat radioactive materials in a closed environment and can utilize the rest of heating bodies to continue to complete heating under the condition that part of heating bodies lose efficacy; in a weak sealing link, a structure capable of performing double sealing and pressure detection is designed, and sealing reliability is improved; after heating ends, forced cooling can be performed, cooling time is saved, and the production efficiency is improved; and a modular structure is adopted, gradation is distinct, fast overhaul and replacement of parts are achieved, and time is saved.

Description

technical field [0001] The invention belongs to the field of heating equipment, in particular to a heating furnace, which is mainly used for heating toxic or radioactive materials. Background technique [0002] In the chemical industry, it is often necessary to heat materials. When the material is toxic or radioactive, in order to avoid the spread of toxicity or radioactivity, it is necessary to heat the material in a closed environment; at the same time, due to the existence of radioactivity, it needs as little maintenance time as possible when repairing and replacing the heating equipment. There are heating devices that cannot meet these requirements. In addition, for the batch heating method, since the furnace temperature needs to be lowered to a reasonable temperature before the materials can be taken out, the cooling time is very long, which greatly restricts the improvement of productivity. When the heating element breaks down, it is difficult for the existing electr...

AI Technical Summary

Problems solved by technology

When the material is toxic or radioactive, in order to avoid the spread of toxicity or radioactivity, it is necessary to heat the material in a closed environment; at the same time, due to the existence of radioactivity, it needs as little maintenance time as possible when repairing and replacing the heating equipment. There are heating devices that cannot meet these requirements

In addition, for the batch heating method, since the furnace temperature needs to be lowered to a reasonable temperature before the materials can be taken out, the cooling time is very long, which greatly restricts the improvement of productivity

When the heating element fails, it is difficult for the existing electric heating furnace to continue to complete the heating work

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