Application of air compressor in thermal power station
Mar 05, 2020
1. Compressed air system for control instrument:
The operation of thermal power generating units requires a large number of control instruments to support operation. The actions of these control instruments are controlled by compressed air. For control instruments, the compressed air system is usually 0.650.70Mpa. Generally for 2300MW thermal power, it can be determined according to the thermal power unit capacity.
The quality grade ISO / DP8573 / 188 of compressed air for instrumentation is generally set to 2-3-2, that is, solid particle level 2; water content level 3; oil content level 2. past. When the compressed air injection screw for instrumentation was developed slowly, the Kaishan air compressor developed slowly. Domestic commonly used 2Z3 / 82Z3 / usually use oil-free reciprocating air compressor to produce.
Now the outstanding advantages of screw air compressors determine its phasing out of reciprocating air compressors. The improvement of the technical level of air purification equipment, moreover. The spray can completely achieve the instrument compressed air oil screw air compressor plus air purification equipment. Quality requirements. Of course, oil-free screw air compressors are also possible, but from an economic perspective
Say. Operation and maintenance are easier. The cost of using oil-injected screw air compressors is lower.
2. Factory mixed compressed air system:
The amount of gas consumption is generally determined according to the size of the power station and its use. For example: a 2300MW thermal power unit. The amount of air used by the factory for mixed compressed air is generally up to two 20m3 / min screws. The compressed air is used to purge the pipeline or repair the air supply of the machine compressor.
When used for pneumatic tools. Moreover, the quality of miscellaneous compressed air is not so low. Therefore, the general factory miscellaneous compressed air system, such as instrument compressed air, cannot stop the air supply. The compressed air system does not need a backup machine. According to the requirements of ISO / DP8573 / 183 specification. The quality requirement is 4-6-5, that is, the solid particle is 4 grade; the water content is 6 and the oil content is 5 grade.
3. Water treatment compressed air system:
Water treatment systems of hydropower stations are generally divided into boiler make-up water treatment systems and industrial wastewater treatment systems.
