Deep freezing technology

Deep freezing technology is the most widely used air separation technology at present, and it is also the focus of competition among countries in air separation technology.
Cryogenic technology uses the principle of different boiling points of oxygen and nitrogen gases under the same pressure to separate gases
Compared with the separation device of other processes, the air separation device developed by cryogenic technology can easily meet the requirements of high yield and high purity, which can meet the requirements of modern large-scale industrial production.
Therefore, the most discussed and widely used in the air separation industry is the air separation device using cryogenic technology.
 

 

(source:http://www.airseparation-plant.cn/air-separation/)

Piston compressor

What classifications of the piston type compressor?
The piston compressor has various kinds of types, and also has different kinds of classification.
It is classified into vertical, horizontal type, angle type, symmetrical balance and contrast-position type according to the figuration of cylinder in the piston compressor.
It can be classified into single stage type, double stage and multistage according to the the compressed series of the piston compressor.
As for the set mode of the piston compressor, it can be classified into mobile type and stationary type.
It can be classified into unloading type and pressure switch type according to the control type of the piston compressor.
How the compressor works?
The theory of the piston compressor works: AS the piston to reciprocate in the cylinder to cyclically change the gas volume of the cylinder.
The crankshaft of the piston compressor rotate a circle, the piston reciprocate once, the cylinder successively complete air inlet, compression and discharge process.
What characteristics of the piston compressor?
The piston compressor has its unique advantages, and it also has disadvantages.
Advantages: A wide range of pressure usage; high thermal efficiency, lower unit energy-consumption; a wide range of discharge; lower requirement of material; mature technology, enriched production experience; simple device system.
Disadvantages: lower rotation, larger and heavy machine;complicate structure, difficult maintenance; interrupted discharge; larger vibration of running.
                                              
（source：http://www.airseparation-plant.cn/piston-compressor/）