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A dense-phase semi-dry desulfurization device and its operating method

A technology of semi-dry desulfurization and operation method, which is applied in the field of sintering machine dense-phase semi-dry desulfurization device and sintering machine desulfurization device. and other issues, to achieve the effect of saving investment, significant economic and social benefits, and great promotion value

Active Publication Date: 2018-08-21
TANGSHAN IRON & STEEL GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem of canceling the bypass flue is that the original operation method relying on the bypass flue cannot guarantee the safe operation of the sintering machine and the dense-phase semi-dry desulfurization device. Once the dense-phase semi-dry desulfurization device fails, it will Cause the shutdown of the entire sintering system, so it is necessary to improve the existing dense-phase semi-dry desulfurization device and operation method

Method used

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  • A dense-phase semi-dry desulfurization device and its operating method

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Experimental program
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Effect test

Embodiment 1

[0031] Preparatory work: 1 DN900mm switch-type mixing air valve is installed in each of the 9 inlet main flue ducts (dual channels) of the main exhaust fan of the sintering machine, equipped with a silencer, and the temperature drop can reach up to 50°C;

[0032] The inlet flue of the dense-phase semi-dry desulfurization device is equipped with two DN900mm switch-type air mixing valves, equipped with a silencer, and the temperature drop is ≥ 50°C;

[0033] The original bypass valve of the sintering machine is blocked, and all interlocking, control, alarm and other related procedures are cancelled;

[0034] The computer screens of the sintering central control room and the desulfurization central control room display their respective fan pressure, damper opening, fan start signal and other parameters.

[0035] A. Start-up operation specific operation steps:

[0036] (1) 10 minutes before starting the main exhaust fan 9 of the sintering machine, start the desulfurization booste...

Embodiment 2

[0051] Preparatory work: The main exhaust fan 9 of the sintering machine is installed in the main flue (single flue) with a DN900mm switch-type air mixing valve 2, equipped with a silencer, and the temperature drop can reach up to 50°C;

[0052] The inlet flue of the dense-phase semi-dry desulfurization device is equipped with two DN900mm switch-type air mixing valves 2, equipped with a silencer, and the temperature drop is ≥ 50°C;

[0053] The original bypass valve of the sintering machine is blocked, and all interlocking, control, alarm and other related procedures are cancelled;

[0054] The computer screens of the sintering central control room and the desulfurization central control room display their respective fan pressure, damper opening, fan start signal and other parameters;

[0055] A. Start-up operation specific steps:

[0056] (1) 8 minutes before starting the main exhaust fan 9 of the sintering machine, start the desulfurization booster fan 8, open the air mixin...

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Abstract

The invention provides a dense phase semi-dry desulfurization apparatus and an operation method thereof, and belongs to the technical field of sintering machines, desulfurization equipment and operation methods. Based on the apparatus and the method, no operation is required for the dense phase semi-dry desulfurization apparatus of a sintering machine arranged at the back of a gas bypass. According to the technical scheme of the invention, the operation procedure for the gas bypass is removed, and the operations of starting and stopping the machine and replacing trolleys for the sintering machine are realized based on the control over the pressures and the temperatures of the sintering machine and the desulfurization apparatus, and the cooperation of a throttle. In this way, the synchronous operation of the sintering machine and the desulfurization apparatus is realized. The above apparatus and the above method are pioneered after existing desulfurization gas bypasses are forcedly removed in China. In this way, the problem in the prior art that once the desulfurization apparatus breaks down, the entire sintering system will break down after the removal of gas bypasses can be solved. Meanwhile, the above apparatus and the above method provide a reliable guarantee for the safe and stable operation of the desulfurization apparatus and the sintering machine. At the same time, the investment on the construction of gas bypasses is saved for newly built sintering machines. Therefore, the above apparatus and the above method have significant economic and social benefits and also have a great popularization value in the industry.

Description

technical field [0001] The invention relates to a sintering secret-phase semi-dry method desulfurization device and an operation method after the bypass flue is eliminated, and belongs to the technical field of the sintering machine desulfurization device and the operation method. Background technique [0002] Dense-phase semi-dry desulfurization technology is a relatively mature semi-dry flue gas desulfurization process. It has the advantages of simple process, low investment, small footprint, no waste water discharge, no equipment corrosion, high desulfurization efficiency, and good impact on flue gas. Medium SO 2 It has the characteristics of strong adaptability to fluctuations in concentration and flue gas volume, and has been successfully applied in many large-scale sintering flue gas desulfurization projects in China. The dense-phase semi-dry desulfurization device is installed at the head of the sintering machine and is used for desulfurization of sintering flue gas ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/80B01D53/50B01D50/00F27D17/00
CPCB01D50/00B01D53/50B01D53/80F27D17/002F27D17/008
Inventor 魏徵李元明张义明袁学军刘希文张晓强张洪建潘铁张炳安张建富
Owner TANGSHAN IRON & STEEL GROUP
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