Waste-heat-recovery converter dry-method dust removal process

A technology of converter dry dust removal and waste heat boiler, which is applied in the fields of converter flue gas dust removal and waste heat recovery, can solve the problems of high cost of sewage recycling, large space occupation, and large water consumption, and achieve good economic benefits and environmental protection effects. The effect of increasing the occupied space and reducing power consumption

Inactive Publication Date: 2015-10-07
汤海军
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem of the wet dust removal method is that the dust removal effect is poor, it cannot meet the environmental protection requirements, the water consumption is large, the cost of sewage recycling is high, the power consumption of the exhaust fan is high, and the waste heat is not u

Method used

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  • Waste-heat-recovery converter dry-method dust removal process
  • Waste-heat-recovery converter dry-method dust removal process

Examples

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Example Embodiment

[0021] Example: such as figure 1 As shown, using the waste heat recovery type converter dry dust removal process of the present invention, the gas-containing flue gas below 1500°C produced by the converter 1 enters the steam fire extinguishing chamber 3 through the vaporization cooling flue 2, and the gas-containing converter flue gas is fired and explosion-proof with steam , Steam is only used when the flue gas is generated and terminated. The amount is small and the time is short, which can slightly cool the flue gas; the converter flue gas enters the waste heat boiler heat exchanger 5 through the connecting pipe 4 for heat exchange and recovers the heat energy of the converter flue gas The temperature of the converter flue gas passing through the waste heat boiler heat exchanger 5 is less than 300°C; the converter flue gas enters the deaerator water heat exchanger 7 through the connecting pipe 6 for heat exchange, recovers the heat energy of the converter flue gas, and passes ...

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Abstract

The invention relates to the technical field of converter smoke dust removal and waste heat recovery. The waste-heat-recovery converter dry-method dust removal process comprises the following steps: step 1, extinguishing converter smoke by utilizing steam; step 2, recovering the heat of the extinguished converter smoke by utilizing a waste heat boiler heat exchanger and an oxygen extractor water heat exchanger; step 3, removing the dust by utilizing a gravity dust collector, and collecting smoke and dust by utilizing a water sealing water tank below the gravity dust collector; step 4, introducing the converter smoke passing through the gravity dust collector into an industrial water heat exchanger, cooling the converter smoke to 40 to 50 DEG C, then sending the cooled converter smoke to a heating heat exchanger, and heating to 3 to 5 EG C; step 5, sending the heated smoke to an air filter to remove the dust, and discharging the converter smoke after the dust removal by virtue of an exhaust pipe. The waste-heat-recovery converter dry-method dust removal process is less in investment, when the dust removal problem is solved, a great amount of waste heat can be recovered, the environment-friendly index requirement can be completely met, and the economic benefit and environmental protection effect are good.

Description

technical field [0001] The invention relates to the technical field of converter flue gas dedusting and waste heat recovery, in particular to a waste heat recovery type converter dry dedusting process. Background technique [0002] At present, for the gas recovery and dust removal of high-temperature flue gas above 1500 °C produced in the steelmaking converter production process, after cooling the flue gas through vaporization and cooling to below 1000 °C, the dust is removed, and then the temperature can be drawn by the exhaust fan. The process of recovering part of the converter gas includes wet dust removal and dry dust removal. The wet method is to use sprinkler to extinguish the fire to cool down, and a large amount of water to wash the dust. The dry method is to use steam spraying to extinguish the fire, spray water in an appropriate amount to cool down, without excess water flow, and use electric dust removal. The problem of the wet dust removal method is that the d...

Claims

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Application Information

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IPC IPC(8): C21C5/38F27D17/00
CPCY02P10/25
Inventor 汤海军
Owner 汤海军
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