Steel plant dust collector

Steel plant dust collector; The layout of pipelines is similar to that of dust collector pipelines in steel mills and cement plants, mainly adhering to the following principles: not affecting process production, easy installation and maintenance, reducing dust removal pipe network resistance, and saving investment for users. Dust collector pipelines should be considered in conjunction with production equipment to make the process flow reasonable.

The steel plant dust collector combines the characteristics of chamber back blowing and pulse cleaning, overcoming the shortcomings of insufficient intensity of ordinary chamber back blowing and general pulse cleaning dust re adsorption. Moreover, the extended filter bag fully utilizes the function of compressed air dust cleaning.

Steel plant dust collector is a large-scale dust removal equipment with good dust removal efficiency, small footprint, stable operation, stable performance, and easy maintenance. Widely applicable for flue gas treatment in industries such as power, building materials, metallurgy, and chemical engineering, especially for flue gas from large storms and high temperatures.

Characteristics of dust collector equipment in steel mills:

1. The key filter material for steel plant dust collectors generally has a service life of over 2 years, and there have been achievements of up to 4-6 years.

2. In dry and semi dry desulfurization systems, it further reduces the SO2 content in flue gas.

3. Flexible in use, the air volume can range from several hundred cubic meters per hour indoors, to several hundred thousand cubic meters per hour near the machine tool. It can be directly set up as a unit or used as a large dust removal room, also known as a "bag room".

4. Good dust removal efficiency, capable of capturing fine dust particles larger than 0.3 microns, with a dust removal efficiency of over 90%.

5. The structure of bag type dust collectors in steel mills is relatively simple, the operation is relatively stable, the initial investment is relatively small (compared to electrostatic precipitators), and maintenance is convenient. Therefore, bag filters are widely used in steel plants to eliminate dust pollution, with practical effects mainly on the environment and material recycling.

Its working principle: The dust collector in the steel plant is mainly composed of ash hopper, filter chamber, clean air chamber, bracket, lifting valve, and spray cleaning device. During work, dusty gas enters the ash hopper through the air duct. Large particles of dust directly fall into the bottom of the ash hopper, while smaller dust enters the filtering chamber upwards with the turning of the airflow and is trapped on the outer surface of the filter bag. The purified flue gas enters the bag and flows through the bag mouth and the clean air chamber into the exhaust outlet, where it is discharged.

Installation plan for dust collectors in steel mills:

1. The on-site storage, transportation, and lifting of the dust collector body and components shall comply with the provisions of the product technical documents.

2. Dust removal engineering installation includes: installation of dust collector body, high and low voltage power supply and its control system, installation of system related equipment and devices, connection of air ducts and electrical, gas, and water pipelines; Dust removal system insulation, rain protection, etc. The construction unit should develop an installation technical plan.

3. The installation of bag filter should comply with the provisions of JB/T8471, and the installation of electrostatic precipitator should comply with the provisions of JB/T8536.

4. The installation of the bag filter bag in the bag filter should be carried out after the completion of all installation work. After the bag filter is installed, welding and gas cutting with open flames should not be carried out inside or outside the shell.

5. The four corners of the shell of the electrostatic precipitator should be grounded separately, and the grounding resistance of the newly built electrostatic precipitator should be less than or equal to 2 Ω.

6. The pressure relief device of the dust collector should have a pressure relief function. The pneumatic system should be sealed, and the pneumatic components should operate flexibly and correctly. All moving parts should be installed firmly and run smoothly.

7. After the installation of the dust removal project is completed, the debris inside the dust collector, dusty gas pipeline, and compressed air pipeline should be removed, and all inspection doors should be closed.

8. The installation requirements for control cabinets/boxes are as follows:

a) The installation of control cabinets/boxes should be kept perpendicular to the horizontal plane, with an inclination of less than 5%;

b) Avoid situations with strong electricity, magnetic fields, and severe vibrations;

c) Grounding of control cabinet/box body;

d) Indoor installation should pay attention to ventilation and heat dissipation, while outdoor installation should have measures to prevent dust, rain, and sun exposure.

9. Dust removal system debugging

10. The debugging of the dust removal system is divided into three stages: single machine commissioning, no-load joint commissioning with process equipment, and material carrying commissioning. After passing the previous stage of testing, proceed to the next stage of testing.