Small air separation FAQ

1. When all kinds of mechanical injuries occur, the power supply should be cut off first, and then the treatment should be carried out according to the injury location and nature. 2. According to the degree of injury, the first aid hospital should be informed at the same time, and the minor injured person should be rescued at the same time. 3. If the injured person does not know the injury location and degree, do not rescue blindly to avoid more serious injury.

What is bare cooling in air separation equipment and why it is necessary to perform bare cooling

Molecular sieve adsorber can adsorb water and carbon dioxide at normal temperature, and at the same time, it can adsorb hydrocarbon such as acetylene. According to the data provided by Linde company, the formula and experimental data of the adsorption efficiency of molecular sieve removing acetylene and other hydrocarbon are as follows: ηx=(1-yci/yji)×100%. Thereinto, the adsorption efficiency of 96.h6 and C2H6 is almost zero; that of C3H8 is 89%; that of C2H4 is 97%; that of C3H6, C2H2 and C4H10 is almost 100%. It can be seen from the above data that molecular sieve purification can be used to clear acetylene, propylene and so on, but it is ineffective to methane and acetane. In order to ensure the safe operation of the unit, the following problems should be paid attention to during the operation: 1) the molecular sieve adsorber should be in a good working state, with complete desorption and regeneration, full and smooth bed and no short-circuit airflow passing; 2) keep the main co...

The content of oxygen in liquid and liquid in the air separation plant is high, which will cause the increase of oxygen concentration in local range after evaporating in the air. If there is fire, there is a danger of burning and explosion. A fertilizer plant once had an explosion accident that hurt people because a large amount of liquid oxygen was discharged into the trench, and it also encountered electric welding sparks. Therefore, it is strictly prohibited to discharge the liquid into the trench at will, and it should be discharged into the liquid steam tank or the special low temperature resistant metal discharge pit through the pipeline. The discharge pits should be kept clean regularly, and organic matters or oil deposits are strictly prohibited. When discharging liquid, fire is forbidden around. Low temperature liquid contacting with skin will cause severe frostbite. If it is light, the skin will form blisters, red and swollen, which will cause pain; if it is severe, it wil...

Reasons for the decrease in moisture content of air after passing through the cooling tower of an air separation plant

What factors are related to the magnitude of cooling loss in air separation equipment

Water cooling tower is a hybrid heat exchanger. The relatively high temperature cooling water (about 35℃) from the air cooling tower flows down from the top spray, and the relatively low temperature sewage nitrogen (about 27℃-27℃) from the switching heat exchanger) the bottom-up flow, the direct contact between the two, not only heat transfer but also mass transfer, is a relatively complex heat transfer process. On the one hand, because the temperature of water is higher than that of sewage nitrogen, there is heat which is directly transmitted from water to sewage nitrogen to cool it down; on the other hand, due to the relatively dry sewage nitrogen, the relative humidity is only about 30%, therefore, the molecules of water can continuously evaporate and spread into the dirt and nitrogen. However, the evaporation of water needs to absorb the latent heat of vaporization. Taking away the heat from the water makes the temperature of the water lower continuously. This phenomenon is like...

What inspections and records should air separation equipment gas companies conduct when receiving gas cylinders sent by users

Structural characteristics of oxygen compressor of air separation plant

Why does the temperature difference at the hot end of an air separation unit cause cold loss

Avoid cavitation of centrifugal pump of air separation equipment

What proportion of the total refrigerating capacity of the expander in the low-pressure air separation unit