1. Dust damage to air compressor;
Air compressor population filter is mainly to remove dust particles from the air and prevent dust from being Compressor The balance of the impeller affects. Dust has three hazards for high speed aerodynamic equipment:
(1) Fouling. Small particle dust (particle size < 5, um) forms a solid scale inside the equipment, affects the air movement, reduces the operating efficiency of the equipment, causes the surge curve to drift, destroys the dynamic balance of the impeller, and causes the shaft vibration of the rotor to rise. High, resulting in forced shutdown and overhaul.
(2) Wear. Large particle dust (particle size & ge; 5, um) impinges on the blade and airflow path, causing surface wear.
(3) Corrosion. Corrosive dust causes chemical corrosion of the equipment. In petrochemical companies, aerodynamic equipment must operate year-round, and downtime may mean production stoppages. In order to ensure their trouble-free, high-efficiency operation and minimize the number of downtimes and maintenance work, it is necessary to install an air filter device with excellent performance in the air intake to reduce the damage of the dust to the equipment. The effect of the air filter filter directly affects the long-term operation of the air compressor.
2, air compressor performance index of air filter
The performance indicators of the filter are mainly dust removal efficiency, resistance and dust holding capacity of the filter. Dust removal efficiency is defined as the percentage of dust trapped by the filter as a percentage of the total amount of gas introduced into the filter, usually expressed in r/.
ie =(G2/G1)×100%
where: G1:—— dust amount g/h with human filter per unit time; G2:—— unit time The amount of dust trapped by the inner filter g/h.
Different dust particles have different dust removal efficiency. When measuring the dust removal capacity of a filter, the size of the particle size must be specified. Comparison is made on the premise of the same particle size, which is the classification efficiency. Resistance refers to the pressure drop of the gas passing through the filter, and the smaller the better, the better the filtration accuracy is. As the resistance of the filter increases gradually, it will affect the inlet pressure of the air compressor, resulting in an increase in the energy consumption of the air compressor; The press surged. Therefore, when the resistance of the filter reaches or approaches the allowable vacuum pressure of the air compressor, the filter material should be replaced in time.
The dust holding capacity indicates the amount of dust collected per unit area of ​​the filter during the time when the filter media starts to work until the filter material needs to be replaced, expressed in g/m2. This indicator reflects the consumption of filter materials and the cost of making filters.
Label [Air compressor post-processing] [Air filter]
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