A melting furnace chimney with a waste heat recovery structure
A waste heat recovery and melting furnace technology, applied in the field of chimneys, can solve the problems of increased fuel consumption, large fuel consumption, and reduction
Active Publication Date: 2015-11-25
烟台力量知识产权服务有限公司
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Problems solved by technology
[0002] The melting furnace is a melting furnace for melting alloy materials in liquid alloy die-casting. The chimney of the melting furnace in the prior art directly discharges the flue gas of the melting furnace into the atmosphere, and the heat energy available in the hot flue gas of the melting furnace is also consumed. At the same time, when the melting furnace is working, it needs to blow air to support combustion. The blown cold air will reduce the temperature of the combustion chamber, thereby increasing fuel consumption. If the waste heat of the hot flue gas can be used to generate hot air blown into the melting furnace , will help to reduce fuel consumption and increase the temperature of the combustion chamber; since the chimney of the melting furnace of the prior art does not have the function of recovering waste heat to generate hot air, the melting furnace of the prior art has the problem and deficiency of high fuel consumption
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[0019] refer to Figure 1 ~ Figure 3 , a melting furnace chimney provided with a waste heat recovery structure of the present invention includes a heat exchanger 1 and a smoke pipe 2, wherein: the heat exchanger 1 is a sandwich casing composed of a heat dissipation pipe 11 and an outer casing 12, The heat dissipation pipe 11 is a cylindrical thin-walled steel pipe with rectangular flanges at the upper and lower ends. The outer cylindrical surface of the heat dissipation pipe 11 is evenly provided with a number of protruding ribs parallel to the central axis called heat dissipation ribs. Rib 111, the inner lumen of heat dissipation pipe 11 is called heat-absorbing flue 16;
[0020] The outer casing 12 is a hollow, rectangular columnar pipe made of refractory and heat-insulating material. The heat dissipation pipe 11 is located at the center of the outer casing 12. The heat dissipation pipe 11 is closed and connected to the upper and lower ends of the outer casing 12 through the...
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The invention discloses a melting furnace chimney with a waste heat recovery structure. The melting furnace chimney comprises a heat exchanger (1) and a smoke tube (2). The melting furnace chimney is composed of the heat exchanger and the smoke tube, wherein the heat exchanger is an interlayer sleeve which is composed of a cooling tube and an outer sleeve, a gap which is used as a heat exchange channel is arranged between the cooling tube and the outer sleeve, a cold air inlet which is communicated with the heat exchange channel is formed in the upper portion of the outer sleeve, and a hot air outlet which is communicated with the heat exchange channel is formed in the lower portion of the outer sleeve. According to the technical scheme that the heat exchanger is used for recovering hot flue gas waste heat which generates hot wind used for combustion supporting, the defect of large fuel consumption in the prior art is overcome, and the purposes of lowering fuel consumption and improving the temperature of a combustor of a melting furnace are achieved.
Description
technical field [0001] The invention relates to a chimney, in particular to a chimney of a melting furnace equipped with a waste heat recovery structure, which is used for discharging flue gas from a melting furnace, and uses waste heat of the flue gas to generate combustion-supporting hot air. Background technique [0002] The melting furnace is a melting furnace for melting alloy materials in liquid alloy die-casting. The chimney of the melting furnace in the prior art directly discharges the flue gas of the melting furnace into the atmosphere, and the heat energy available in the hot flue gas of the melting furnace is also consumed. At the same time, when the melting furnace is working, it needs to blow air to support combustion. The blown cold air will reduce the temperature of the combustion chamber, thereby increasing fuel consumption. If the waste heat of the hot flue gas can be used to generate hot air blown into the melting furnace , will help reduce fuel consumptio...
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IPC IPC(8): F27D17/00F23L15/00
CPCY02E20/34Y02P10/25Y02P80/15
Inventor 金佩瑾
Owner 烟台力量知识产权服务有限公司