FAQ

Screw compressor is a positive displacement compressor from the mechanical type, which is composed of the driving rotor and driven rotor, the main body and a pair of synchronous gears. Therefore, the common faults of screw compressor are as follows: 1. The bearing is burnt out. Because of the foreign matter in the oil system, the oil pressure and the quality of the oil are reduced, resulting in the bearing burning out. The main treatment methods are: check the oil supply system; clean the oil filter and the cooling pipe of the oil cooler; check and adjust the oil pressure regulating valve; test the oil quality, and replace the oil when it is not good; check and deal with the oil leakage points. 2. The rotor is burnt out. When foreign matters enter into the compressed medium system, the temperature of the rotor rises, the temperature of the cooling oil of the rotor increases due to the high temperature of the inhaled medium, and the compression ratio increases, which may cause the

Why only cryogenic air separation equipment can be selected for large industrial gas?

The raw air is passed through an air filtration system to remove dust and mechanical impurities, and the filtered air is compressed by a multi-stage turbocompressor with an intercooler to the required pressure for the process. The compressed air is cooled and cleaned by two layers of cooling water in an air cooling tower of small air separation unit. Chemical impurities in the compressed air that are soluble in water are also absorbed by the falling cooling water cleaning. The remaining impuriti...

Why is pressure maintenance required for cold box of air separation equipment? What is the core purpose?

What are the core components of cold box of air separation equipment?

The non-power consuming option for liquid air separation plants can be used for full liquid air separation plants，where the produced liquid is sold off. This approach is currently available for most LNG receiving stations. For air separation units with a large cold capacity, the liquid air can be pressurised to 6baA in a vacuum storage tank, and then heat exchanged through a heat exchanger, instead of the air compressor, directly into the cold box for distillation. At the same time in the cold b...

1. Before connecting the pipe orifice of each container, clean white cloth shall be used to tie the orifice to prevent grease and dirt from entering. 2. When welding in the cold box and in the condensing evaporator, it is strictly forbidden for flame or arc to touch the surface of vessels and pipes. 3. The containers, valves, pipes and corresponding supports in the cold box, the surface of the cold box and the foundation surface shall not be stained with grease after installation, otherwise, degreasing treatment shall be carried out.

What should be paid attention to when adjusting the air separation equipment when oxygen is abundant and oxygen production needs to be reduced