Air separation parts FAQ

How to cool the wastewater nitrogen in the water cooling tower of an air separation plant

The steam heater uses overheated steam as the heat source, so it is easy to leak and pollute the heating medium in the process of use. Therefore, the manufacturing requirements are strict and the cost of the equipment is relatively high; steam is used for heating, its price is cheaper than electricity, but it needs antifreezing in winter. From the perspective of operation, electric heating will not affect the regeneration of the adsorber due to steam leakage, so the cost of the equipment is relatively low. Whether steam or electric heating is used for the heating and regeneration of the molecular sieve purifier is related to the equipment capacity and factory conditions. Generally, if the equipment capacity is relatively large and the factory has sufficient steam source, steam heating is usually adopted; if the equipment capacity is relatively small and the factory has difficulty in steam source, electric heating is adopted. Some also adopt steam heating first and then electric heat...

After the gas expands through the guide valve and the impeller, the airflow at the outlet of the impeller still has a certain speed. This part of kinetic energy is not converted into mechanical energy for external work, and the resulting kinetic energy loss is called residual speed loss. Considering the rationality of impeller structure shape, the speed should be at 45 ~ 70 m/s. If a section of short tube with gradually expanding section is connected to the outlet of the impeller, then the flow velocity can be reduced and the kinetic energy can be reduced. A part of kinetic energy of the airflow can be converted into pressure energy, and the pressure at the outlet of the short tube will be increased. Therefore, this short tube is called the diffuser. In the air separation plant, the airflow velocity at the outlet of the diffuser is generally 5 ~ 10 m/s. After the diffuser, the temperature of the gas also rises. For the expansion machine used by the air separation unit, it is the p...

Why does the temperature of liquid oxygen in a condensing evaporator become lower than the temperature of gas nitrogen before it absorbs heat and evaporates

Relationship between the average temperature of liquid oxygen in an air separation plant and the main cooling liquid level

Which factors are related to the throttling effect refrigeration capacity of air separation equipment

1) cleaning method welding slag, rust, slag and so on in the pipeline will be blocked or stuck in the throttle, guiding position and the balance hole of the lower valve cover, which will cause the valve core curved surface, the guiding surface to be pulled and scratched, and the sealing surface to produce indentation and so on.. This often happens when the new system is put into operation and the initial stage after overhaul. This is the most common fault. In this case, it must be removed for cleaning, and the slag should be removed. If the sealing surface is damaged, it should also be grinded; at the same time, the underplug should be opened to wash away the slag falling from the balance hole into the lower valve cover, and wash the pipeline. Before being put into operation, let the regulating valve be fully open and the medium flow for a period of time before being brought into normal operation. 2) external scour method when using common valve to adjust some medium which is easy t...

The method of maintaining air compressor of air separation plant: I. Regular maintenance and maintenance of main components: In order to make the air compressor run normally and reliably and guarantee the service life of the unit, detailed maintenance plan should be formulated, and personnel operation, regular maintenance and regular inspection and maintenance should be carried out, keep the air compressor unit clean, oil-free and dirt-free. The maintenance of main components is conducted according to the following table: Note: A. it must be confirmed when repairing and changing parts according to the above table: the pressure in the air compressor system has been released, separated from other pressure sources, and the switch on the main circuit has been cut off, and the safety sign of not closing has been made. B. The replacement time of the compressor cooling lubricating oil depends on the use environment, humidity, dust and whether there is acid-alkaline gas in the air. New oil ...

Liquid distributor of packed tower

How to deal with water mixed with lubricating oil

What is throttling and why the fluid temperature generally decreases after throttling

What safety problems should be paid attention to when using liquid oxygen storage tank