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Steelmaking converter flue gas treatment device and method

A flue gas treatment and steelmaking converter technology, applied in the field of converter flue gas treatment, can solve problems such as unfavorable waste heat recovery, potential safety hazards, and easy explosion of mixed gas, and achieve the effect of avoiding explosions

Inactive Publication Date: 2019-01-29
SHOUGANG CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a steelmaking converter flue gas treatment device and method, which are used to solve the problems caused by the existence of a certain concentration of CO and O in the converter flue gas in the prior art. 2 The mixed gas is prone to explosion, which has potential safety hazards, and does not use the technical problem of waste heat recovery in the low-temperature section of the converter flue gas

Method used

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  • Steelmaking converter flue gas treatment device and method
  • Steelmaking converter flue gas treatment device and method
  • Steelmaking converter flue gas treatment device and method

Examples

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Effect test

Embodiment 1

[0030] figure 1 It is a schematic structural diagram of a steelmaking converter flue gas treatment device in an embodiment of the present invention. Such asfigure 1 As shown, the flue gas treatment device includes:

[0031] The converter 1 has a furnace mouth on the top of the converter 1, and the flue gas produced in the smelting of the converter 1 overflows from the furnace mouth.

[0032] Specifically, a large amount of primary flue gas will be produced during the smelting process of the steelmaking converter, and the flue gas temperature is high and the dust content is high. The top furnace mouth overflows, the flue gas produced by the converter 1 can be cooled and recovered, and the waste heat in the low temperature section can be reused, so as to achieve effective utilization of resources and be conducive to environmental protection.

[0033] A flue, the inlet of the flue is connected to the furnace mouth, and vaporizes and cools the flue gas generated by the converter...

Embodiment 2

[0051] Figure 4 It is a schematic flow chart of a steelmaking converter flue gas treatment method in an embodiment of the present invention. A steelmaking converter flue gas treatment method provided in an embodiment of the present invention is applied to the flue gas treatment device, such as Figure 4 As shown, the method includes:

[0052] Step 10: The high-temperature dusty flue gas generated by the converter 1 during the smelting process enters the flue for vaporization and cooling.

[0053] Specifically, steelmaking converter 1 produces a large amount of flue gas during the smelting process, the temperature of the flue gas is 1500-1700°C, and the flue gas contains a large amount of dust, with a dust content of 100g / m 3 Left and right, the flue gas will overflow from the furnace mouth of the converter 1 into the flue, and gradually vaporize and cool the flue gas and recover heat by moving in the flue.

[0054] Step 20: When the flue gas in the flue cools down to 600-1...

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Abstract

The invention discloses a steelmaking converter flue gas treatment device and method. The steelmaking converter flue gas treatment device comprises a converter, a flue, an ignition device, a dust removing device and a recycling device; the top of the converter is provided with a converter port; the flue is used for vaporizing and cooling flue gas generated by the converter; the ignition device isarranged on the flue wall of the flue and used for igniting the flue gas in the flue; the dust removing device is connected with an outlet of the flue and used for conducting dust removing treatment on the flue gas ignited by the ignition device; and the recycling device is used for recycling the flue gas obtained after dust removing. According to the steelmaking converter flue gas treatment device and method, the technical problem that low-temperature-section waste heat recycling of the converter flue gas is not facilitated due to the fact that CO and O2 mixed gas with a certain concentrationexists in the converter flue gas, explosion is prone to occurring, and potential safety hazards exist is solved; and the technical effects that the concentration of CO and O2 in the CO and O2 mixed gas is decreased through an ignition reaction before the CO and O2 mixed gas in the flue gas reaches an explosion temperature point, the condition that the flue gas explores in the low-temperature section is avoided, and effective recycling of the low-temperature-section waste heat of the flue gas is achieved are achieved.

Description

technical field [0001] The invention relates to the technical field of converter flue gas treatment, in particular to a steelmaking converter flue gas treatment device and method. Background technique [0002] During the steelmaking converter smelting process, the converter will produce a large amount of primary flue gas, and the temperature of the flue gas is about 1600 °C. At the same time, the flue gas contains a lot of dust, the dust content is 100g / m 3 Left and right, the flue gas needs to be dedusted and waste heat recovered through the converter flue gas treatment system. The main components of the primary flue gas of the steelmaking converter are CO, CO 2 , N 2 , O 2 , in the converter smelting process, the flue gas composition changes continuously with the blowing time, when the CO and O in the flue gas 2 When the concentration reaches a certain ratio and the temperature of the flue gas is lower than the ignition point of CO, the mixed flue gas is prone to expl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C5/40
CPCC21C5/40C21C2100/02Y02P10/25
Inventor 杨小龙张效鹏张殿伟李劲松赵志星
Owner SHOUGANG CORPORATION
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