Coal Powder Distributor (Steel Plant Coal Injection) DN65-25-14

Based on the model "Pulverized Coal Distributor DN65-25-14" you provided, it is a type of pulverized coal distributor used in the pulverized coal injection system of blast furnaces in steel plants. Its specific parameters may include: main pipe diameter DN65, branch pipe diameter DN25, and 14 branch pipes.
Product Overview
The pulverized coal distributor is a key piece of equipment in the blast furnace pulverized coal injection system. Its main function is to evenly distribute pulverized coal delivered through a single pipeline to multiple branch pipes (typically corresponding to multiple tuyeres of the blast furnace), ensuring uniform combustion of the coal in the furnace hearth.

The main technical parameters are as follows:
Working pressure: 1.6 MPa - 2.5 MPa
Applicable medium: Dry pulverized coal
Working temperature: ≤ 80°C
Connection method: Typically flange connection, some models also offer threaded connection.
Material: The main body is usually made of carbon steel or stainless steel, while the branch pipes may use wear-resistant alloys or wear-resistant ceramics to extend service life.

Common Types and Features
Pulverized coal distributors can be classified into various types based on shape and structure. Among those commonly used in steel plant pulverized coal injection systems are:
Cone type (deflector type): Simple internal cavity structure, compact size, lightweight, and easy maintenance. Pulverized coal forms a vortex within the cone cavity, ensuring even distribution, low resistance loss, and minimal powder accumulation.
Disk type: Similar to the cone type, with fixed coal flow direction, low resistance, high distribution accuracy, and long service life.
Bottle type: Relatively complex structure, prone to internal vortex formation, higher resistance, and risk of powder accumulation; gradually being replaced by cone and disk types.

Applications and Advantages
This equipment is widely used in boiler systems across industries such as power, chemical, textile, and petroleum, particularly in blast furnace pulverized coal injection processes in steel plants. Its advantages include:
Even distribution: High precision control of coal injection volume at each tuyere, achieving ±3% of the maximum injection volume, ensuring uniform combustion in the blast furnace hearth.
Stable operation: No swirling or pulsation during coal powder flow, ensuring stable and reliable injection.
Long service life: Use of wear-resistant materials minimizes wear and extends operational lifespan.
We hope this information helps you understand this model of pulverized coal distributor. If you require more specific product manuals, please contact Lanhao Environmental Protection for further details.