Shaft furnace pellet clinker waste heat recycling method and device

A waste heat recovery and clinker technology, applied in furnaces, waste heat treatment, furnace components, etc., can solve problems such as unsatisfactory waste heat recovery effects, achieve considerable economic benefits, small amount of engineering transformation, and good heat preservation measures

Active Publication Date: 2015-09-16
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And the recovery of heat is not considered from the overall process flow, so the effect of waste heat recovery is not ideal

Method used

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  • Shaft furnace pellet clinker waste heat recycling method and device
  • Shaft furnace pellet clinker waste heat recycling method and device
  • Shaft furnace pellet clinker waste heat recycling method and device

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Embodiment Construction

[0027] Specific embodiments of the present invention, below in conjunction with picture Detailed description.

[0028] see picture 1, picture 2, picture 3 and picture 4. A method for recovering waste heat from shaft furnace pellet clinker, the steps of which include:

[0029] (1), install the first insulation cover 2 on the chain plate machine 1 conveying pellet clinker to carry out sealing and heat preservation treatment;

[0030] (2), use the cooling machine 3 to cool the high-temperature pellet clinker during transportation, and install the second insulation cover 4 on the cooling machine 3 to carry out sealing and heat preservation treatment; the outlet of the cooling machine 3 is docked with a hopper 10;

[0031] (3), hot blast enters respectively in shaft furnace, wet pellet conveying belt air cover and drier under the effect of induced draft fan 7, and hot blast adopts dust collector to carry out dedusting treatment before entering induced draft fan 7; Accordi...

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PUM

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Abstract

The invention discloses a shaft furnace pellet clinker waste heat recycling method and device. The temperature of pellet clinkers coming from a shaft furnace exceeds 550 DEG C, then the clinkers are conveyed to a clinker bin through a chain-slat conveyer and a belt cooler, and in this process, pellets dissipate heat outwards in a radiation mode. The pellet clinker waste heat can heat cooling air of the belt cooler through sealing of the chain-slat conveyer and the belt cooler, then hot air is subjected to dedusting processing through a dust remover and then is distributed by a pipeline, and a part of hot air is used for the shaft furnace and a drying kiln to support combustion of air, so that the temperature of combustion-supporting air of the shaft furnace and the drying kiln is improved and gas is saved; another part of hot air is used for predrying wet pellets on a discharging belt of the shaft furnace, and the gas consumption is reduced; the left air is used for the shaft furnace to cool air. The shaft furnace pellet clinker waste heat recycling method and device is obvious in energy conservation effect, small in operation and maintenance workload, low in operation cost, high in economic benefit and capable of reducing the enterprise cost and reducing environment pollution.

Description

technical field [0001] The invention relates to a method for recovering waste heat, in particular to a method for recovering waste heat of shaft furnace pellet clinker. Background technique [0002] In iron and steel enterprises, the energy consumption of sintering operation is second only to ironmaking. The heat taken away by the exhaust gas of the sintering cooler accounts for 25% to 30% of the total energy consumption of the sintering plant, and the recovery of waste heat from the exhaust gas is an important part of energy saving in sintering operations. [0003] At present, the waste heat recovery technologies mainly include: ① separated heat pipe waste heat recovery technology; ② integral heat pipe waste heat recovery technology. Different designs and methods of waste heat recovery will bring completely different benefits. Generally, waste heat recovery and utilization methods include: ① install heat exchanger; ② install waste heat boiler. [0004] The waste heat rec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D17/00F27D15/02
Inventor 邓胜祥贺真白龙宫天丰陈刚
Owner CENT SOUTH UNIV
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