1. What is reflux ratio? What influence does it have on rectification? Answer: reflux ratio refers to the ratio of the amount of liquid in the lower s...
I. The basic principle of membrane separation and oxygen generation the study of gas's mass transfer process in membrane has a history of more than 10...
1 The condensing evaporator connected with the upper and lower towers arranges multiple plate units in a single layer, or adds auxiliary condensing ev...
Temperature difference is the power of heat transfer. As long as there is temperature difference between two materials, they will carry out the heat o...
In order to reduce the air temperature in the low temperature air separation unit, various heat exchange equipment are needed for cold and heat exchan...
In the air separation unit, the function of air cooling column is to reduce the temperature of air compressed by air compressor. Air cooling column is...
According to the dye composition of penetrant, it can be divided into fluorescent penetrant testing, dye penetrant testing and fluorescent dye penetra...
1. Before hoisting, check and confirm whether the crane body, crane legs, lifting rigging and wire rope meet the safety requirements and hoisting cond...
1. The removal of perlite site shall be supervised by full-time personnel and guided by professionals. The principle of who organizes, who takes respo...
The pressure relief of molecular sieve in the purification system is generally rapid in the early stage, not complete and running overtime in the late...
1. It is easy to produce air hole when the flux is wet 2. If the welding speed is too fast, it is easy to produce welding porosity 3. Welding gas ho...
1. When working at a height of more than 2 meters or multilevel cross operation, special personnel shall be assigned to guard or contact with each oth...
