Air make-up unit (air make-up regulator) for steel plants and power plants

Steel Plant and Power Plant Air Supplement Device, also known as an air supplement regulator or pulverized coal blowing assistor, plays a crucial role in the pneumatic conveying systems of steel plants and power plants. The following is a detailed introduction to its applications in steel plants and power plants:

 - **Structure and Principle**: Air supplement devices typically come in two types: adjustable and non-adjustable. The adjustable type mainly consists of two sets of pipes: the inner pipe carries coal, while the annular gap between the outer and inner pipes allows supplementary gas to flow. By adjusting the circular nut, the gap of the air supplement channel is altered, thereby regulating the air volume and flow velocity to control the flow rate of powdered materials. The principle involves disrupting the formed material column by adjusting the bypass air supplement volume during dense-phase conveying, enabling stable long-distance transportation of pulverized coal and other powdered materials.

 - **Application in Steel Plants**: In the blast furnace injection systems of steel plants, the air supplement device is installed on the pulverized coal main pipe at the outlet of the injection tank. The high-concentration pulverized coal emerging from the injection tank is skillfully diluted by the air supplement device, resulting in a fully and uniformly mixed solid-gas combination that forms a stable dense-phase solid-gas two-phase flow, contributing to improved steelmaking efficiency.

 - **Application in Power Plants**: In power plants, the air supplement device is used for the transportation and regulation of pulverized coal and ash. For example, during pneumatic conveying of pulverized coal, it dilutes the high-concentration coal powder from the injection tank, forming a stable dense-phase solid-gas two-phase flow of coal and gas to ensure combustion efficiency. It can also be used for regulating the transportation of fly ash, ensuring stability throughout the conveying process.

 - **Product Features**: The air supplement device offers a variety of specifications, such as DN40, DN65, DN80, DN100, and DN125, to meet the needs of different scenarios. It is made of durable materials with high-temperature and corrosion-resistant properties, enabling long-term stable operation. It works reliably with minimal risk of failure, ensuring continuous production.