Technical Specification for Pulverized Coal Filtration in Blast Furnace PCI System
Equipment Function
As the core purification unit of the blast furnace PCI system, the pulverized coal filter is used to remove oversized coarse particles, fibrous impurities, and foreign matter from the pulverized coal, ensuring the reliable operation of the coal conveying system. Its core functions include:
Impurity Filtration: Effectively filters particles ≥0.5mm in the pulverized coal to prevent clogging of distributors and lances;
System Protection: Reduces wear on downstream pipelines caused by high-speed coal flow, extending equipment service life;
Process Optimization: When used in conjunction with fluidizing devices, it improves the uniformity of coal conveying and supports stable blast furnace operation.

Technical Features Pressure-Resistant Design: Utilizes a double-cone butt-welded structure with an operating pressure of 1.0~2.5MPa (standard configuration 1.6MPa);
High-Efficiency Filtration: Filtration area ≥4 times the inlet cross-sectional area, with pressure loss controlled within 0.02MPa;
Material Upgrade: Shell made of Q345R carbon steel, filter plate made of high-chromium manganese steel (HRC≥58), with temperature resistance up to 150°C;

Smart Maintenance: New models are equipped with differential pressure monitoring modules and support automatic reverse-pulse cleaning.
System Integration Installation Node: Located on the main pipeline between the injection tank outlet and the pulverized coal distributor;
Collaborative Equipment: Must form a three-stage purification system with fluidizers and cyclone dust collectors;
Industry Applications: Suitable for powder conveying scenarios in industries such as steel, power, and chemical.
Technological Evolution Current mainstream equipment has evolved from traditional mechanical filtration to intelligent solutions, such as:
Using ceramic membrane composite filter materials to improve filtration precision;
Integrating PLC control systems for fault預警;
Modular design supporting rapid filter cartridge replacement.