{"id":624,"date":"2022-05-13T10:27:50","date_gmt":"2022-05-13T02:27:50","guid":{"rendered":"http:\/\/www.zjjiwei.com\/?page_id=624"},"modified":"2022-08-03T11:32:27","modified_gmt":"2022-08-03T03:32:27","slug":"steel","status":"publish","type":"page","link":"http:\/\/www.zjjiwei.com\/index.php\/en\/application\/steel\/","title":{"rendered":"Steel"},"content":{"rendered":"

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Steel Industry<\/span><\/span><\/strong><\/p>\n<\/div>

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In order to ensure that the project meets the 10mg emission requirements, the company uses independently developed and designed high-precision filter materials to make filter bags, which can ensure that the ultra-low emission requirements can be met; at the same time, the company arranges technical experts in various aspects such as project installation, testing, and protection. Fine management of the whole process.<\/p>\n<\/div><\/div><\/div>[\/vc_column][\/vc_row][vc_row][vc_column]

The iron and steel industry has the most dust control points, and the basic application is the bag filter, which is also the industry where the bag filter was applied earlier.<\/p>\n

From mining, crushing, screening, transfer, coking, sintering, blast furnace smelting, converter steelmaking, electric furnace steelmaking, steelmaking auxiliary raw material system, molten steel refining, slab cutting (including flame cleaning) to hot rolling, cold rolling, etc. During the production process of the technological process, a large amount of dust and smoke are generated, and all the dust is filtered by a bag filter.<\/p>\n<\/div><\/div><\/div>

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According to different operating conditions, our company selects the most suitable filter material with the highest libido ratio for customers according to local conditions, so as to achieve the effect of low resistance, high efficiency, stable operation and ultra-low emission.<\/p>\n

Selection of filter materials: According to different operating conditions in the steel industry, filter materials such as polyester series, acrylic series, PPS series, aramid series, glass fiber film series, PTFE+PPS blended, PTFE+glass fiber blended, etc. can be selected.<\/b><\/strong><\/p>\n<\/div><\/div><\/div>

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The company’s ultra-clean filter material series products are a new generation of special new filter materials developed for the new environmental protection requirements of ultra-low emission, low resistance and long life of fine dust. It adopts a new design concept and raw material formula, and introduces ultra-fine fibers and selects high-performance fibers in a targeted manner. The stable running resistance ensures the emission of smoke and dust up to the standard.<\/p>\n<\/div><\/div><\/div>[\/vc_column][\/vc_row][vc_row][vc_column]

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Ultra-low emissions in the steel industry\uff1a<\/span><\/strong><\/p>\n<\/div><\/div><\/div>

Dust removal in the iron and steel industry has always been the company’s traditional advantage: for dust removal at room temperature, the company’s unique polyester microfiber filter material, high-density special effect filter material,
\nAnd the membrane filter material, in the filtering wind speed within 0.8m\/min, the discharge is basically below 5mg, and maintains a low and stable pressure difference;<\/p>\n<\/div><\/div><\/div>[\/vc_column][\/vc_row][vc_row][vc_column]

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Sintering machine semi-dry desulfurization and dust removal\uff1a<\/span><\/strong><\/p>\n<\/div><\/div><\/div>

In view of the dry high-concentration dust conditions, the company uses the PPS microfiber surface layer filter material to make filter bags through fine processing techniques such as bag head sewing and seam coating silica gel. meet high emission requirements;<\/p>\n<\/div><\/div><\/div>[\/vc_column][\/vc_row][vc_row][vc_column]

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Steel industry dust control point\uff1a<\/span><\/strong><\/p>\n<\/div><\/div><\/div>

From mining, crushing, screening, transfer, coking, sintering, blast furnace smelting, converter steelmaking, electric furnace steelmaking, steelmaking auxiliary raw material system, molten steel refining, slab cutting (including flame cleaning) to hot rolling, cold rolling, etc. A large amount of dust and smoke are generated in the production process of the technological process;<\/p>\n<\/div><\/div><\/div>[\/vc_column][\/vc_row][vc_row][vc_column]

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Dedusting of blast furnace and converter raw material systems\uff1a<\/span><\/strong><\/p>\n<\/div><\/div><\/div>

A large amount of dust is generated in the process of transportation, screening, storage and feeding, and the dust composition is diverse, such as pellets, sintered ore, miscellaneous ore, coke powder, coal powder, clay, ferroalloy and lime, etc., which belong to normal temperature conditions. .<\/p>\n<\/div><\/div><\/div>

Dust concentration: about 5 g\/Nm3\uff5e15 g\/Nm3.
\nFilter material scheme: PE is the base material, and anti-static, oil-proof and water-proof, film coating and other processes can be selected according to particle size and working conditions.<\/p>\n<\/div><\/div><\/div>

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Blast furnace casting yard dust removal\uff1a<\/span><\/strong><\/p>\n<\/div><\/div><\/div>

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When the blast furnace is tapping, a large amount of dusty flue gas is generated in the tap hole, main trench, slag skimmer, slag trench, and molten iron tank.<\/p>\n<\/div><\/div><\/div>

Flue gas temperature: 60\u2103\uff5e100\u2103
\nDust concentration: 5 g\/Nm3\uff5e15 g\/Nm3
\n50% particle size: 5 \u00b5m to 10 \u00b5m
\nFilter material scheme: 550 grams of PE film, 650 grams of PE filter material.<\/p>\n<\/div><\/div><\/div>

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Converter secondary dust removal\uff1a<\/span><\/strong><\/p>\n<\/div><\/div><\/div>

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The converter produces a large amount of secondary flue gas during the process of mixing molten iron, adding scrap steel, tapping, and converter blowing, and the dust is basically iron oxides.<\/p>\n<\/div><\/div><\/div>

Flue gas temperature: 60\u2103\uff5e130\u2103
\nDust concentration: 2g\/Nm3\uff5e5g\/Nm3
\nFilter material scheme: 550 grams of PE filter material, 550 grams of PE film, PE microfiber filter material.<\/p>\n<\/div><\/div><\/div>

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Steelmaking electric furnace dust removal\uff1a<\/span><\/strong><\/p>\n<\/div><\/div><\/div>

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The steelmaking electric furnace produces a large amount of flue gas during the smelting process; the main characteristics of the working conditions are the large amount of flue gas and the fine dust particles; almost 100% of them are below 5 \u03bcm ~ 10 \u03bcm, and the viscosity is large.<\/p>\n<\/div><\/div><\/div>

Flue gas temperature: <130\u2103
\nDust concentration: 8g\/Nm3\uff5e15g\/Nm3
\nFilter material scheme: 650 grams of PE filter material, 650 grams of PE film coated filter material, 550 grams of PE film coated, PE ultrafine fiber filter material.<\/p>\n<\/div><\/div><\/div>[\/vc_column][\/vc_row][vc_row][vc_column width=”2\/3″]

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Dedusting of blast furnace and converter raw material systems\uff1a<\/span><\/strong><\/p>\n<\/div><\/div><\/div>

A large amount of dust is generated in the process of transportation, screening, storage and feeding, and the dust composition is diverse, such as pellets, sintered ore, miscellaneous ore, coke powder, coal powder, clay, ferroalloy and lime, etc., which belong to normal temperature conditions. .<\/p>\n<\/div><\/div><\/div>

Dust concentration: about 5 g\/Nm3\uff5e15 g\/Nm3.
\nFilter material scheme: PE is the base material, and anti-static, oil-proof and water-proof, film coating and other processes can be selected according to particle size and working conditions.<\/p>\n<\/div><\/div><\/div>[\/vc_column][vc_column width=”1\/3″][\/vc_column][\/vc_row][vc_row][vc_column width=”2\/3″]

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Converter + blast furnace gas power generation and dust removal\uff1a<\/span><\/strong><\/p>\n<\/div><\/div><\/div>

After the surplus gas is burned for power generation, the exhaust gas has the characteristics of relatively stable working conditions, low flue gas corrosion, low dust content, and low flue gas temperature.
\nFilter material scheme: PPS550g should be used; the filtering wind speed is less than 0.75m\/mi.<\/p>\n<\/div><\/div><\/div>

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Sintering flue gas dust removal\uff1a<\/span><\/strong><\/p>\n<\/div><\/div><\/div>[vc_row_inner][vc_column_inner width=”1\/2″]

Nose smoke<\/span><\/strong><\/p>\n

Dust is mineral powder, coke, etc.; contains harmful gases such as SO 2 and NO X, dust
\nStrong abrasiveness, high humidity, strong corrosiveness; cold water is produced from cold state to hot state;
\nElectrostatic precipitator + wet desulfurization is changed to semi-dry desulfurization + cloth bag.
\nFilter scheme: 100%PPS, PPS\/TF, PPS+TF\/TF.<\/p>\n<\/div><\/div><\/div>

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Tail Smoke<\/span><\/strong><\/p>\n

The working condition of unloading flue gas is relatively simple, and the selection of filter material is mainly based on temperature.
\nMixed flue gas dust concentration: 5-15g\/Nm3, unmixed dust concentration is lower
\nFlue gas temperature: 60~180 \u2103
\nFilter material scheme: PE, acrylic (DT), DT composite, PI composite felt, etc.<\/p>\n<\/div><\/div><\/div>[\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row]<\/p>\n","protected":false},"excerpt":{"rendered":"

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