Large air separation FAQ

The actual running current of 132kw-8 electric motor is 220A ~ 240A, four air compressors share one air storage tank, and the actual pressure required is 0.6 ~ 0.7Mpa, remote pressure gauge indication is 0.64Mpa. How to reform? 1. Only one (132kw-8) of the four air compressors is changed to be added with a pressure transmitter, and the actual pressure of the sampling pipe network is fed back to the inverter. Inverter automatically adjusts output voltage through software (PID function. (That is to reduce the actual power) to meet the actual gas consumption. After agreement, in order not to affect the motor temperature, we adopt RB600-3P160G type (160kw inverter ). II. Adopt manual switching of power/frequency conversion. If there is something wrong with the frequency converter, it can be changed to power frequency operation. It really does not affect the actual production of the factory and ensures the long-term operation of the air compressor. Third, according to the pressure requir...

The unit power consumption of oxygen production W02 (kW • h/m3) is one of the important economic indicators of oxygen production. In the power consumption of the oxygen generation of the air separation plant, the power consumption of the air compressor is the most important part. Its power consumption (kw • h/h) is related to the pressure ratio, and the calculation formula is E02 = yo2ρ r'tln (p2/p1)/(⊙yk 3600 ε T ε M), thus it can be seen that the unit power consumption of oxygen generation is roughly proportional to the logarithm of pressure ratio and the purity of oxygen; it is inversely proportional to the extraction rate of oxygen and the efficiency of compressor. Therefore, during the operation, the working pressure should be reduced as much as possible; the compressor should be fully cooled to improve the isotherm efficiency of the compressor; the oxygen extraction rate should be improved as much as possible; on the premise of ensuring the product quality, do not pursue produ...

At present, most of the cooling materials filled in the cooling box of the air separation plant are Pearl sand. Pearl sand is a particle with small apparent density, which is easy to fly. It will invade the facial features, stimulate the throat and eyes, and even suck in the lung through the respiratory tract. Therefore, wear a protective mask when working. The fluidity of Pearl sand is very good, and its density is smaller than that of water. People will be drowned and suffocated when they fall into the Pearl sand layer. Therefore, the manhole on the top of the cold box and the loading position should all be installed with 8 ~ 10mm steel bar welded square-shaped safety iron fence to prevent accidents. When the Pearl sand needs to be removed, the leaking parts are found in the cold box. If it is oxygen leakage, it will increase the oxygen concentration in the cold box, and if it is fire overhaul, explosion accident may occur; if it is nitrogen leakage, the nitrogen concentration in ...

Why do we need to balance the pressure when the molecular sieve adsorber is switching: (1) when the molecular sieve adsorber is switching, we need to balance the pressure first to ensure the smooth operation of the whole device. When the molecular sieve adsorber is switching, if the pressure is uneven, then in order to fill the inner space of the container, the air flow and pressure of the device will fluctuate suddenly. (2) In addition, if the molecular sieve adsorber which is going to be put into use does not carry out uniform pressure first, it will be strongly impacted by the air when switching, which will deform or even damage the barrier. Aluminum glue and molecular sieve also rub and squeeze each other because of the impact. After producing dust particles, they enter the internal channel of the absorbant, causing blocking and reducing the adsorption efficiency. Therefore, the molecular sieve adsorber must be under average pressure before switching.

Why is there both liquid nitrogen and gas nitrogen at the top of the air separation tower

What are the requirements for the main tower when configuring the argon tower in the air separation tower

Industry insiders of membrane separation gas industry think that the technological development of membrane separation gas industry in our country mainly includes the following technical points: (1) for membrane technology which has been applied in industrialization in our country, such as micro-filtration, superfiltration, reverse permeability and gas separation membrane, we should strengthen the development efforts, improve product quality and form scale benefits. Take solving membrane materials and membrane manufacturing technology as the core, break through the preparation technology of composite reverse permeability membrane, and make the products reach the international level; carry out Industry Planning and scientific and technological development, and improve the technical level of domestic superfiltration membrane, maintain a relatively high market share. On the basis of successful industrial application of membrane hydrogen extraction, membrane oxygen enrichment, membrane n...

Why does the liquid air level and liquid oxygen level rise when the air separation equipment is temporarily stopped

1. Air separation plant and its performance characteristics 1.1 air separation plant the air separation plant uses air as the raw material, and converts the air into liquid state through compression cycle and deep freezing, after rectification, the equipment is gradually separated from the liquid air to produce lazy gases such as oxygen, nitrogen and argon. At present, there are various forms and types of air separation equipment produced in our country. There are devices for producing gas oxygen and nitrogen, and also devices for producing liquid oxygen and nitrogen. But in terms of basic process, there are mainly four kinds, which are high pressure, medium pressure, high and low pressure and full and low pressure process. The production scale of air separation plant in our country has been able to produce only 20m3/h (oxygen) oxygen generator from the early stage, up to now, it has the ability to produce 20000 m3/h, 30000 m3/h and 50000 m3/h (oxygen) super large air separation pla...

What impact does the air separation equipment have on the device when extracting rare gases

Distillation process of fractionator of air separation plant

What drive modes are available for compressors of large air separation plants