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Blast furnace gas deacidification device

A technology of blast furnace gas and blast furnace, which is applied in the field of blast furnace gas acid removal device, and can solve problems such as consumption, large water resources, and increased system operation and maintenance costs

Active Publication Date: 2017-08-11
SHOUGANG CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a blast furnace gas acid removal device, which solves or partly solves the problem of removing most of the chlorine and sulfide in the gas through a large amount of alkali spraying and water spraying cycle washing in the prior art, which consumes a lot of water resources and increases the The technical problem of the operation and maintenance cost of the whole system has realized the absorption of most of the acid gases such as chlorine and sulfur in the blast furnace gas, which has the technical effect of saving water and electricity and reducing the generation of high-salt wastewater

Method used

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  • Blast furnace gas deacidification device

Examples

Experimental program
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Effect test

Embodiment 1

[0042] The blast furnace gas deacidification device includes: an injection tank 9 , a gas supply source and a powder spray gun 7 ; the powder spray gun 7 is arranged on the gas pipeline 4 between the cyclone dust collector 3 and the dry dust collector 5 . One end of the nozzle pipe of the powder spray gun 7 is closed, and the other end is connected with the powder spraying pipeline. Three groups of nozzles 12 are arranged on the nozzle pipe, and each group of nozzles 12 includes 8 nozzles arranged at equal intervals (20mm) along the axis of the nozzle pipe. ; 3 groups of nozzles 12 are evenly distributed on the circumference of the nozzle, and the diameter of the nozzles 12 is 5mm.

[0043] Lime powder is a by-product of steelmaking active ash produced by sleeve kiln; lime powder includes small-sized lime powder and large-sized lime powder; the mass ratio of small-sized lime powder to large-sized lime powder is 98:2; small-sized lime powder can pass 200 mesh sieve. The blowin...

Embodiment 2

[0049] The blast furnace gas deacidification device includes: a blowing tank 9, a gas supply source and three powder spray guns 7; the three powder spray guns 7 are respectively arranged on the gas pipeline 4 between the blast furnace 1 and the gravity dust collector 2, and the gravity dust collector 2 On the gas pipeline 4 between the cyclone dust collector 3 and on the gas pipeline 4 between the cyclone dust collector 3 and the dry dust collector 5 . One end of the nozzle pipe of the powder spray gun 7 is closed, and the other end is connected with the powder spraying pipeline 8. Three groups of nozzles 12 are arranged on the nozzle pipe, and each group of nozzles 12 includes 8 nozzles arranged at equal intervals (20mm) along the nozzle axis. Nozzle 12; 3 groups of nozzles 12 are evenly distributed on the circumference of the nozzle, and the diameter of the nozzle 12 is 5mm.

[0050] Lime powder is a by-product of steelmaking active ash produced by sleeve kiln; lime powder i...

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Abstract

The invention relates to a blast furnace gas deacidification device which comprises a powder spray gun, an injection tank and a gas source, wherein the powder spray gun is connected with a gas pipeline and comprises a spray pipe penetrating the gas pipeline and spray nozzles arranged on the spray pipe; the spray nozzles are located in the gas pipeline; the injection tank is fixedly connected with the powder spray gun through a powder spray pipeline and is provided with a fluidization spray nozzle; and the gas source is connected with the fluidization spray nozzle through a gas pipe and used for conveying an injection carrier. The blast furnace gas deacidification device can absorb most acid gases such as chlorine and sulfur in blast furnace gas, save water and electricity, reduce the generation of high-salinity wastewater, alleviate the corrosion of the gas pipeline and downstream gas user facilities caused by blast furnace gas, and guarantee the calorific value of gas and the generating capacity of a blast furnace top gas recovery turbine unit.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a blast furnace gas acid removal device. Background technique [0002] Blast furnace gas dry dedusting has the advantages of high dust removal efficiency, water saving, electricity saving, etc., and retains the pressure energy and heat energy of blast furnace gas, and improves the power generation of blast furnace gas residual pressure turbine power generation device (TRT), and is gradually being used It is used in newly built and expanded blast furnaces. In recent years, due to the extensive use of low-quality ore in blast furnaces, the spraying of imported ore with seawater to reduce dust, and the injection of CaCl in sinter 2 Improving the performance of low-temperature reduction and pulverization has led to a substantial increase in the content of acid gases such as chlorine and sulfur in the gas, and the dry dust removal system for blast furnace gas cannot remove the aci...

Claims

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Application Information

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IPC IPC(8): C21B7/22C21B5/06C10K1/22C10K1/30
CPCC10K1/22C10K1/30C21B5/06C21B7/22Y02P10/25
Inventor 刘文运陈辉孙健梁海龙武建龙王伟姜文豪贾国利贾军民崔化师赵京雁李洪亮
Owner SHOUGANG CORPORATION
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