In thermal power plants, the selection of coal ash pipelines is crucial because it directly affects the transportation efficiency of ash and slag, the operational stability of the equipment, and maintenance costs.

Requirements for coal ash pipes:

Wear resistance: Coal ash contains a large number of hard particles, so the pipe must have good wear resistance. Commonly used wear-resistant materials include high-chromium cast iron, ceramic composites, stainless steel and alloy steel. These materials can effectively resist the erosion and wear of coal ash and extend the service life of pipelines.

High temperature resistance: Coal ash pipes in thermal power plants are usually in high temperature environments, so the selected materials must be able to withstand high temperatures without deformation or damage. Materials such as stainless steel and alloy steel have high temperature resistance and are suitable for such environments.

Corrosion resistance: Coal ash may contain certain corrosive substances, so pipe materials should also have certain corrosion resistance. This helps reduce corrosion damage to pipelines and ensures long-term stable operation.

In the pipeline transportation of coal ash in thermal power plants, we give priority to ceramic lined pipelines, especially in the selection of pipeline elbows.

The following are the main advantages of ceramic lined pipes:

High wear resistance: Ceramic lining is usually made of high-hardness alumina ceramic or silicon carbide ceramic, which gives the pipe excellent wear resistance. When transporting highly abrasive media, such as pulverized coal, ash, ore, etc., the ceramic lining can effectively resist the impact and wear of particulate matter, thereby extending the service life of the pipeline.

Excellent corrosion resistance: Ceramic materials have excellent corrosion resistance and can resist erosion by corrosive media such as acids, alkalis, and salts. This enables ceramic-lined pipes to operate stably for a long time in corrosive environments, reducing equipment damage and repair costs caused by corrosion.

Low friction coefficient: The ceramic lined pipe has a smooth surface and a low friction coefficient. This helps reduce friction and wear of solid particles in the pipeline, reduces energy loss during transportation, and improves transportation efficiency.

Good temperature resistance: Ceramic materials have good high temperature resistance and can operate stably in high temperature environments. This makes ceramic-lined pipes suitable for use in high-temperature process systems, such as coal ash transportation in thermal power plants.

Long life: Ceramic lined pipes generally have a long service life due to their excellent resistance to wear, corrosion and high temperatures. This helps reduce the frequency of pipeline repairs and replacements, lowers maintenance costs and improves overall economic efficiency.