Large air separation FAQ

The analysis of the working principle of centrifugal compressor I. The explanation of common nouns: (1) level: each level of impeller and its matched fixed components (such as diffuser, etc.) constitute a basic unit, call it a level. For example: Hangzhou oxygen 2TYS100 2TYS76 oxygen turbine compressor high and low pressure cylinder has eight impellers, which is called eight levels. (2) segment: the unit separated by intermediate cooler is called segment. In this way, the compressor can be divided into many sections according to the number of coolers. A section can include many levels, or only one level. (3) standard state: 0℃, 1 standard atmospheric pressure. (4) air intake status: generally refers to the temperature and pressure of the gas at the inlet. (5) weight flow: the weight of gas flowing in one second. Volume flow: the volume of gas flowing in one second. Gauge pressure (G): The pressure measured based on the local atmosphere. Absolute pressure (A): The pressure measured o...

What safety precautions should be paid attention to when loading pearlite

How does the energy of the air in the air separation unit change after isothermal compression

How much influence does the temperature difference at the hot end of the air separation plant have on the incomplete heat exchange loss

Why is the lowest temperature in the air separation tower lower than the outlet temperature of the expander

Labyrinth compressor

How to warm and defrost the air separation unit during normal shutdown

What are the arrangement methods of the cooler of the piston compressor used in the air separation unit

How to optimize the structure of equipment support in the cold box of air separation plant

(1) advantages and disadvantages of nitrogen cyclic pressurization internal compression process Linde company of Germany developed the first air separation equipment for the internal compression process of the liquid oxygen pump in 1970s. However, this 35100m3/h air separation plant used in a fertilizer plant in Navmada, India, is not a common one that uses the high pressure air produced by the Air booster as a heat source to vaporize the high pressure liquid oxygen in the main heat exchanger, instead, the nitrogen circulating booster is adopted to reheat the gas and nitrogen on the top of the pressure tower through the heat exchanger, and then compress them into high-pressure nitrogen through the nitrogen circulating booster. The high-pressure nitrogen enters the high-pressure heat exchanger to vaporize liquid oxygen, and it enters the pressure Tower again after being liquefied. Three years later, in 1979, Linde company provided 3 sets of 28000m3/h air separation plant for Zhejiang...

Part temperature of upper tower top

Blowing off is the operation of removing solid impurities and free water by the impact of airflow, and at the same time, it can also expel part of the heat and cold energy stored in the equipment. After installation and overhaul, the air separation unit is easy to remain solid impurities and water drops, so it should be blown away; when the unit is stopped, the cooling volume of the expelled part should be blown away, in order to expel part of the heat and further clear the water after the heating operation, it should also be blown out. There are roughly two blowing methods: continuous blowing and intermittent blowing. The so-called "continuous blowing-off" is the blowing-off method that always opens the blowing-off valve and lasts for a period of time. The so-called "Intermittent blow-off" means that the blow-off valve is closed and open at the same time. When it is closed, it is opened suddenly after holding high pressure, and it is repeated. This method has better effect on remov...