Waste heat recovery device for low hood

Abstract

The invention discloses a waste heat recovery device for a low hood, which comprises a low hood base, wherein a feeding door panel is arranged in the middle of the front end surface of the low hood base. A low hood cover plate is arranged on the top surface of the low hood base, a flue gas exhaust pipe is arranged in the middle of the top surface of the low hood cover plate, and water storage tanks are arranged on the left and right side surfaces of the low hood base. A water pipe and a return pipe are arranged between the two water storage tanks, a water inlet pipe is arranged at the positionwhich is near to the bottom on the left side surface of the left water storage tank, and a water outlet pipe is arranged at the position which is near to the bottom on the right side surface of the right water storage tank. The waste heat recovery device is provided with the water storage tanks, the water pipe and the return pipe, which can fully absorb the internal heat energy, and waste of heatenergy is avoided; the device is also provided with a fixing sleeve matched with a fixing rod, which facilitates the opening and closing of the feeding door panel; the device is provided with a heatabsorbing device, which expands the range of heat absorption.

Description

technical field [0001] The invention relates to a waste heat recovery device for a low fume hood. Background technique [0002] The fume hood is a cage-shaped device used to capture and export the flue gas. In the early stage of the submerged arc furnace, the high fume hood exposed on the hood was used. With the development of the submerged arc furnace technology, the modern submerged arc furnace generally adopts a low Fume hood or semi-closed fume hood, as one of the large parts of semi-closed submerged arc furnace, the low fume hood is a new type of fume hood developed by alloy submerged arc furnace, which improves the poor electrode sealing of traditional high fume hood electric furnace, The high-temperature flue gas is easy to damage and radiate the equipment around the electrode and the staff, the service life is short, and the copper busbar is vulnerable. , improve the operating environment, which has obvious advantages, the introduction of water cooling system, which...

AI Technical Summary

Problems solved by technology

[0002] The fume hood is a cage-shaped device used to capture and export the flue gas. In the early stage of the submerged arc furnace, the high fume hood exposed on the hood was used. With the development of the submerged arc furnace technology, the modern submerged arc furnace generally adopts a low Fume hood or semi-closed fume hood, as one of the large parts of semi-closed submerged arc furnace, the low fume hood is a new type of fume hood developed by alloy submerged arc furnace, which improves the poor electrode sealing of traditional high fume hood electric furnace, The high-temperature flue gas is easy to damage and radiate the equipment around the electrode and the staff, the service life is short, and the copper busbar is vulnerable. , improve the operating environment, which has obvious advantages, the introduction of water cooling system, which greatly reduces the external temperature of the low fume hood, reduces the heat radiation to the surroundings, and improves the service life of the equipment. The low fume hood can be provided by setting the furnace door Feeding, feeding and other operations can control the amount of cold air entering and adjust the temperature in the furnace. The short mesh busbar is directly installed on the water-cooled furnace cover, which shortens the length of the busbar, which is beneficial to reduce power consumption, reduce flue gas volume, and increase temperature. It is conducive to purification treatment and waste heat utilization, but the traditional low fume hood often only collects the exhausted gas, and after unified treatment, it is discharged into the air, but the heat trapped in the gas will also be discharged together, so One is the waste of resources, based on the above problems, it is necessary to provide a short smoke hood that can solve the problem

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