Waste gas pre-heating type glory hole

Abstract

The present invention discloses an exhaust-gas preheat heating furnace, which comprises a lower heating furnace and an upper preheating furnace arranged on the lower heating furnace, wherein, the lower heating furnace is provided inside with a first flue, and the upper preheating furnace is provided inside with a second flue, both ends of the first flue are connected with a first feed outlet and a first feed inlet respectively, and both ends of the second flue are connected with a second feed outlet and a second feed inlet, the second feed outlet is communicated with the first feed inlet, wherein, the lower heating furnace is provided inside with a heater to heat the first flue, the high-temperature fume produced by the heating furnace in the lower lay is used by the preheating furnace in the upper layer to heat the second flue. The recycled usage of the high-temperature fume decreases the risk of environmental pollution, prevent the mass waste on the heat, while the preheating furnace on the upper lower need no additional fuels; therefore, the economic benefit is good; the material is preheated in the second flue, and reheated in the first flue; therefore, the material is heated with even temperature, and the preheating quality is steady.

Description

technical field [0001] The invention relates to a heating furnace, in particular to a waste gas preheating type heating furnace. Background technique [0002] The Chinese patent database disclosed a utility model named "Quenching Furnace" on July 13, 2005, and its patent number is 200320104080.2. A quenching furnace, comprising a furnace body, a first material inlet, a first outlet, and a furnace, the height of the first inlet is higher than that of the first outlet, the furnace is placed horizontally, and a rotating mechanism is connected with it connect. The quenching furnace has the following disadvantages: the furnace body generates and discharges high-temperature flue gas with a large amount of heat energy, which not only pollutes the environment but also wastes a large amount of heat energy. Contents of the invention [0003] In order to overcome the problems of polluting the environment and wasting a large amount of heat energy in the existing heating furnace, the...

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Problems solved by technology

[0003] In order to overcome the problems of polluting the environment and wasting a large amount of heat energy in the existing heating furnace, the present invention provides a waste gas preheating type heating furnace, wherein, the lower layer of the heating furnace heats the first furnace through the heating body, and the upper layer of the preheating furnace The high-temperature flue gas generated by the lower heating furnace is used to heat the second furnace, and the reuse of high-temperature flue gas reduces environmental pollution and prevents a large amount of waste of heat energy. The upper preheating furnace does not need to add fuel, and the economic benefit is good.

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