First flue gas dust removal and waste heat recovery system for electric stove

A technology of waste heat recovery system and waste heat recovery device, applied in lighting and heating equipment, furnace, waste heat treatment, etc., can solve the problem of reducing heat transfer efficiency and service life of heat pipe heating surface, increasing maintenance workload and running resistance, wasting energy, etc. problem, achieve the effect of saving the cost of secondary cooling equipment, safe and stable operation of the system, and high dust removal efficiency

Inactive Publication Date: 2009-09-23
BAOSTEEL ENG & TECH GRP
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Problems solved by technology

But in this way, a lot of energy is wasted due to the mixing of a large amount of air and the system becomes huge. More importantly, the flue gas of the electric furnace has not been dust-removed, and the high-temperature gas contains a large amo

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  • First flue gas dust removal and waste heat recovery system for electric stove

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Embodiment Construction

[0026] A preferred embodiment of the present invention will be specifically introduced below in conjunction with the accompanying drawings.

[0027] Referring to the accompanying drawings, the electric furnace flue gas primary dust removal and waste heat recovery system of the present invention is connected to the electric furnace smoke exhaust hole 1, and the system consists of a water-cooled moving tube 2, a combustion chamber 3, a water-cooled flue 4, and a high-temperature dust collector 5 , a pressure regulating valve 6 , a waste heat recovery device 7 , a bypass pipe 8 , a switching valve 9 , a dust removal fan 10 , a frequency converter 11 and a chimney 12 .

[0028] Wherein, the inlet of the combustion chamber 3 is connected to the smoke exhaust hole 1 of the electric furnace through the water-cooled moving tube 2 , and the outlet of the combustion chamber 3 is connected to the high-temperature-resistant dust collector 5 through the water-cooled flue 4 . The outlet of ...

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Abstract

The invention relates to a first flue gas dust removal and waste heat recovery system for an electric stove. The system is connected with the smoke hole of the electric stove and comprises a water cooling travelling tube, a combustor and a water cooling flue gas path, and the system also comprises a high temperature resistant dust remover, a waste heat recovery device, a dust removal fan and a chimney. The outlet of the combustor is communicated with the smoke hole of the electric stove by the water cooling travelling tube and the outlet of the combustor is communicated with the high temperature resistant dust remover by the water cooling flue gas path. The outlet of the high temperature resistant dust remover is communicated with the inlet pipeline of the waste heat recovery device, thus the flue gas after dust removal can be sent into the waste heat recovery device. The outlet of the waste heat recovery device is communicated with the chimney by the fan, and the waste heat recovery device is used for absorbing the heat of the flue gas. The dust removal fan is arranged on the pipeline between the waste heat recovery device and the chimney. The system of the invention has the advantages of high dust removal efficiency, strong operability, safe and steady operation, low energy consumption and steam recovery, thus realizing flue gas emission reduction and energy conversation of the electric stove.

Description

technical field [0001] The invention relates to the field of industrial furnace flue gas treatment and heat recovery, in particular to a high-temperature flue gas primary dust removal and waste heat recovery system used in the electric furnace steelmaking process of a metallurgical steel plant. Background technique [0002] At present, the production pace of electric furnaces in steel mills is generally accelerated, and the proportion of molten iron is increased, resulting in a substantial increase in the amount of flue gas during electric furnace smelting. For electric furnace dust removal, it mainly involves the recovery and non-recovery of waste heat from electric furnace flue gas. [0003] Most of the existing electric furnace flue gas waste heat is not recycled, and the high-temperature flue gas generated during electric furnace smelting is combined with the secondary dust removal of flue gas during electric furnace feeding and tapping to set up an electric furnace dust...

Claims

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Application Information

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IPC IPC(8): F27D17/00B01D46/02B01D46/04B01D46/42
CPCY02P10/25
Inventor 王永忠沈晓红朱军
Owner BAOSTEEL ENG & TECH GRP
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