STEEL INDUSTRY

In order to ensure that the project meets the 10mg emission requirements, Yanpai uses high-precision filter materials independently developed and designed to make filter bags, which can ensure that the ultra-low emission requirements are met; at the same time, the company arranges technical experts in various aspects such as project installation, testing, and protection. Carry out fine management of the whole process.

The steel industry has the most dust control points, and the basic application is the bag filter, which is also the earliest application of the bag filter.

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.

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.

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.

Yan brand 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 product has low resistance and high efficiency, good temperature resistance and corrosion resistance, and can help users to intercept fine dust efficiently. Maintain a stable operating resistance to ensure that the smoke and dust are discharged up to the standard.

Ultra-low emissions in the steel industry:

Dust removal in the iron and steel industry has always been the traditional advantage of Yanpai Co., Ltd.: For dust removal in the normal temperature section, Yanpai Co., Ltd.
And 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;

Sintering machine semi-dry desulfurization and dust removal:

According to the dry high-concentration dust conditions, Yanpai Co., Ltd. uses the PPS microfiber surface layer filter material to make the filter material through fine processing such as bag head sewing and seam coating silica gel.
Bags, professional installers are responsible for the combined process construction process to meet high emission requirements;

Dust control points in iron and steel industry:

From mining, crushing, screening, transfer, coking, sintering, blast furnace smelting, converter steelmaking, electric furnace steelmaking, steelmaking auxiliary raw material systems, molten steel refining, slab cutting
A large amount of dust and smoke are generated in the production process of the whole process (including flame cleaning) to hot rolling and cold rolling;

Dedusting of blast furnace and converter raw material systems:

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. .

Dust concentration: about 5 g/Nm3～15 g/Nm3.
Filter 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.

Dust removal in blast furnace casting yard:

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.

Flue gas temperature: 60℃～100℃
Dust concentration: 5 g/Nm3～15 g/Nm3
50% particle size: 5 µm to 10 µm
Filter material scheme: 550 grams of PE film, 650 grams of PE filter material.

Converter secondary dust removal:

The converter produces a large amount of secondary flue gas during the process of mixing molten iron, adding scrap steel, tapping and converter blowing, etc.
The dust is essentially an oxide of iron.

Flue gas temperature: 60℃～130℃
Dust concentration: 2g/Nm3～5g/Nm3
Filter material scheme: 550 grams of PE filter material, 550 grams of PE film, PE microfiber filter material.

Steelmaking electric furnace dust removal:

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 μm to 10 μm, and the viscosity is large.

Flue gas temperature: <130℃
Dust concentration: 8g/Nm3～15g/Nm3
Filter 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.

Dedusting of blast furnace and converter raw material systems:

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. .

Dust concentration: about 5 g/Nm3～15 g/Nm3.
Filter 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.

Converter + blast furnace gas power generation and dust removal:

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.
Filter material scheme: PPS550g should be used; the filtering wind speed is less than 0.75m/mi.

Sintering flue gas dust removal: