Electric furnace waste heat recycling and dedusting device

Abstract

The invention relates to an electric furnace waste heat recycling and dedusting device which comprises a deduster, a main fan, an exhaust cylinder and a heat pipe steam generator that are sequentially connected. The electric furnace waste heat recycling and dedusting device is characterized in that the heat pipe steam generator is connected with a fully-closed electric furnace through an insulation flue, and the output end of the heat pipe steam generator is connected with the deduster. The electric furnace waste heat recycling and dedusting device is further characterized in that the heat pipe steam generator is formed by combining a heat exchange pipe bundle, the heated section of the heat exchange pipe bundle is arranged in a high-temperature flue, the smoke transversely passes through the heat pipe heated section, and the heating section of a heat pipe element is inserted into a water-steam system. In the structure, the heat pipe steam generator is replaced with an equipment combination of a power cooler, a spraying cooler and the like, thus the system configuration is simplified, the smoke waste heat is recycled furthest, the cooling range is large and the operation cost is lowered.

Description

technical field [0001] The invention relates to an electric furnace waste heat recovery and dust removal device. Background technique [0002] In the prior art, the high-temperature combustible gas purification device of a fully enclosed electric furnace is a high-temperature combustible gas generating device, a cooling facility, and a dust collector connected in sequence through pipelines. [0003] At present, the commonly used cooling methods are: mechanical cooler air cooling, spray cooling, etc. The above cooling methods all have certain disadvantages. The mechanical cooler is air-cooled, and the cooling effect is poor. The temperature of the inlet flue gas should not exceed 500°C, the cooling is limited, it is easy to block ash, and requires frequent maintenance; spray cooling is easy to increase the water content in the flue gas , not only makes the dust bag easy to harden, but also easily causes the bag to fail due to hydrolysis. [0004] Based on the above shortcom...

AI Technical Summary

Problems solved by technology

The above cooling methods all have certain disadvantages. The mechanical cooler is air-cooled, and the cooling effect is poor. The temperature of the inlet flue gas should not exceed 500°C, the cooling is limited, it is easy to block ash, and requires frequent maintenance; spray cooling is easy to increase the water content in the flue gas , not only makes the dust bag easy to harden, but also easily causes the bag to fail due to hydrolysis

[0004] Based on the above shortcomings, most of the above cooling methods are used in combination in the project, resulting in complex flue gas cooling system, huge equipment, heavy operation and maintenance workload, high resistance of the whole device, between 5500-8000Pa, and large energy consumption of the main fan

At the same time, the above-mentioned cooling methods are only pure cooling, resulting in the failure to fully utilize the sensible heat of high-temperature combustible gas, and a large amount of heat energy is wasted

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