The main advantages in the use of rotary compressors MAPRO palette ® for organic or natural gas gas compression are:
The MAPRO ® vane compressor is of the volumetric type. In other words, compression occurs by progressive reduction, during rotation, of the “volume” of gas transferred from the suction port to the delivery one.
The delivery ports are opened in the stator, from time to time, at a height determined by the expected operating pressure, in order to use only the power necessary for the effective "compression" of the gas. The result is an adiabatic compression efficiency that is always high and, in general, between 70 and 80% if referred to the compressor displacement.
The restricted internal clearances allow a volumetric efficiency which is also high and practically invariable since the wear of the slats over time is automatically compensated.
The power required for compression is therefore, in general, lower than that required by other types of compressors, with consequent low operating costs.
The reduced number of moving parts simplifies the disassembly and reassembly operations, thus making them much cheaper than other types of volumetric compressors.
A rapid external measuring system allows to evaluate, at predetermined time intervals, the state of wear of the blades without having to disassemble, even partially, the machine body to access the compression chamber. The replacement of the blades can therefore be programmed in advance, according to the work needs of the system or the maintenance needs of other parts, simplifying the management of the system and improving its economy.
The gas flow is continuous (not pulsating) both in suction and in delivery, therefore making no accumulation tanks or dampers necessary.
MAPRO ® rotary vane compressors are compact machines, in which the slight imbalance due to the different radial position of the blades with respect to the axis of rotation does not generate appreciable vibrations during operation, and therefore does not require special foundations.
Already in principle less noisy than other types of compressors, where required, they can be soundproofed.
The oil used for strictly mechanical purposes, namely for the lubrication of bearings, lamellae, mechanical seal, segments, also plays two other important roles in biological gas compressors. The thin film of lubricant, continuously renewed, first of all protects the internal surfaces from the acids contained in the biogas and also tends to incorporate the impurities present in it in the form of solid or liquid particles, thus also carrying out an internal cleaning action of the compression chamber .
The “disposable oil lubrication” therefore makes the MAPRO ® rotary vane a compressor, even if made with ordinary materials such as cast iron and carbon steel, particularly suitable for treating potentially corrosive gases, containing impurities and saturated in water vapor, all characteristics of biological gas.