Air separation parts FAQ

What are the impacts of scaling in the cooling system of air separation equipment and how can it be prevented?

Saturation temperature and saturation pressure are terms in gas-liquid equilibrium. If it is not filled with liquid in a sealed container, part of liquid molecules will enter the upper space, which is called "evaporation ". As the number of vapour molecules in space increases, the pressure of vapour generated by it also increases. At a certain time, the number of vapour molecules in space will not increase any more. At this time, the number of molecules leaving the liquid and the number of molecules returning the liquid from Space reach a dynamic balance, which is also called "saturated state ". At this time, the pressure generated by vapour is called "saturated pressure ". For the same substance, the saturation pressure is related to the temperature. The higher the temperature is, the greater the energy the molecule has, the easier it is to get rid of the liquid and gasification, and the corresponding saturation pressure is also higher. A certain temperature corresponds to a certai...

What are the performance requirements of air separation equipment for environmental conditions?

In the air separation plant, the adsorption capacity of the adsorbents is expressed by static adsorption capacity and dynamic adsorption capacity. The static adsorption capacity is the largest amount of adsorbed substance when the adsorbents per unit mass (or unit volume) reach the adsorption equilibrium under certain temperature and certain concentration of absorbed components, that is the ratio of the maximum adsorptive capacity (equilibrium value) that can be reached by the adsorbents to the adsorbents. The dynamic adsorption capacity is the adsorptive capacity when the absorbents reach the "conversion point" (expressed by the average adsorptive capacity per unit of absorbents in the adsorber ). Generally, it is calculated by "conversion time", that is, the time from the fluid contacting the absorbents layer to the "conversion point. "Turning effect point" is the point where the concentration of absorbed component increases obviously when fluid flows out of the absorption layer. ...

What is the purpose of liquefaction equipment in air separation plants?

Before starting, the following preparations should be done first: 1) Check whether the unit has the starting conditions (including the reason of last stop and the condition of overhaul; check whether there are obstacles around the unit; whether the starting tools, listening needles, recording tables and so on are ready); 2) Check whether the motor, electric, instrument and lighting signal are normal, especially whether the accident chain system can act correctly (including water break, low oil pressure, axial displacement, etc.); 3) oil supply lubrication system is normal (fuel tank oil level, fuel tank bottom whether the water, auxiliary oil pump and oil circuit normal); 4) conditions of cooling system and cooling water (including whether the cooler valve is flexible, water supply pressure and water volume, etc.); 5) whether various valves are flexible and easy to use, and whether they can be closed or opened as required; 6) turn the wheel before starting, check whether the rotatin...

What is the working principle of the pre cooling system for air separation equipment?

What are the main characteristics of air separation equipment in steel matching?

How to store liquid products in air separation equipment?

Air compressor intermediate cooler is generally shell-tube structure. Water is supplied inside the pipe, and gas is supplied between the pipes, which plays a cooling role through the heat exchange of fluid inside and outside the pipe. The reasons that affect the cooling effect of compressor intermediate cooler include: 1) insufficient cooling water. The heat of the air is not enough to be taken away by the cooling water, resulting in the increase of the next level of suction temperature, the decrease of gas density, and finally the reduction of exhaust volume. Therefore, the water supply pressure of cooling water should be closely monitored during operation to control the water supply. The process generally requires that the cooling water pressure should be greater than 0.15MPa (surface pressure); 2) the cooling water temperature is too high. High water temperature reduces the temperature difference between water and gas, and reduces the effect of heat and cooling. Even if the amoun...

What is the working principle of the distillation process in air separation equipment?

What are the effects of steam temperature on the safety performance of air separation unit turbines?