Year1
- 小型：
- 3立方制氧机
- 工业：
- 3立方制氧机
- 高纯度：
- 3立方制氧机
A series of pressure swing adsorption oxygen production equipment provided by Xinbang (it has the characteristics of low equipment cost, small size, It has the advantages of light weight, simple operation, convenient maintenance, low operating costs, fast on-site oxygen production, convenient switching, no pollution, etc. It can be applied to steel cutting, oxygen-rich combustion, etc.) and cryogenic oxygen production equipment (high oxygen purity, equipment It has a long service life and can produce nitrogen, oxygen and argon at the same time, suitable for oxygen station building and smooth cutting of steel).
The models that our company can choose are oxygen-generating equipment with an oxygen purity of %, and cryogenic oxygen-generating equipment with an oxygen purity of greater than .%.
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The working principle of the oxygen generator
Pressure swing adsorption oxygen production utilizes the selective adsorption characteristics of zeolite molecular sieves, using a cycle of pressure adsorption, decompression and desorption, so that the compression Air alternately enters the adsorption tower to achieve air separation, thereby continuously producing high-purity product oxygen.
The oxygen generator is based on the principle of pressure swing adsorption and uses high-quality zeolite molecular sieve as the adsorbent to produce oxygen from the air under a certain pressure. The purified and dried compressed air is adsorbed under pressure and desorbed under reduced pressure in the adsorber. Due to the aerodynamic effect, the diffusion rate of nitrogen in the pores of the zeolite molecular sieve is much greater than that of oxygen. Nitrogen is preferentially adsorbed by the zeolite molecular sieve, and oxygen is enriched in the gas phase to form finished oxygen. Then the pressure is reduced to normal pressure, and the adsorbent desorbs the adsorbed nitrogen and other impurities to achieve regeneration. Generally, two adsorption towers are set up in the system. One tower adsorbs and produces oxygen, and the other tower desorbs and regenerates. The program controller controls the opening and closing of the pneumatic valve, so that the two towers cycle alternately to achieve the purpose of continuous production of high-quality oxygen.
The complete system of the oxygen generator consists of the following components: compressed air purification components, air storage tanks, oxygen and nitrogen separation devices, and oxygen buffer tanks. If cylinders are needed to be filled, an oxygen booster and bottle filling device are installed at the end.
The pressure swing adsorption oxygen generator uses zeolite molecular sieve as the adsorbent and uses the principles of pressure adsorption and pressure reduction desorption to adsorb and release oxygen from the air, thereby separating oxygen. Zeolite molecular sieve is a spherical granular adsorbent processed by a special pore processing technology. The surface and interior are covered with micropores. It is white in color. Its pore characteristics enable it to achieve precise kinetic separation. The separation effect of zeolite molecular sieve on gas and gas is based on the slight difference in the kinetic diameter of the two gases. The molecules have a faster diffusion rate in the micropores of the zeolite molecular sieve, and the molecular diffusion rate is slower. The diffusion of water and nitrogen in compressed air is not much different from that of nitrogen. What is finally enriched from the adsorption tower is oxygen molecules.
Working Principle of Low Temperature Air Separation Oxygen Generation Equipment
The air is sucked in from the atmosphere, filtered by the filter, and then enters the air compressor. After being compressed and cooled step by step, it enters the air pre-cooling system for pre-cooling and passes through the water The separator separates the free water in the air, and then enters the purification system to remove moisture, carbon dioxide and most hydrocarbons in the air.
The purified air enters the plate-fin heat exchanger in the cold box of the fractionation tower and performs heat exchange with the returning oxygen, nitrogen and dirty nitrogen. Then a part of the air is extracted from the middle of the heat exchanger and enters the turbine expander. Expansion refrigeration is carried out, and part of the expanded low-temperature air enters the upper tower, and the other part bypasses and enters the waste nitrogen pipe. The remaining air is extracted from the bottom of the plate-fin heat exchanger, and is sent to the lower tower for distillation after throttling.
In the lower tower, the air is initially separated. The top is pure nitrogen and the bottom is oxygen-rich liquid air. The oxygen-rich liquid air is extracted from the bottom of the lower tower, and is sent to the middle of the upper tower after being subcooled by the cooler. After the nitrogen at the top of the lower tower is condensed into liquid nitrogen by the condensing evaporator, part of it returns to the lower tower as the reflux liquid of the lower tower. The other part is subcooled by the cooler and then throttled into the top of the upper tower as reflux of the rectification section of the upper tower. liquid.
After rectification in the upper tower, pure oxygen is finally obtained at the lower part of the upper tower. After being reheated by the heat exchanger, the oxygen is discharged out of the fractionation tower as product gas, sent into the air bag, and then compressed by the oxygen compressor, filled into bottles or used for other purposes.
Nitrogen is extracted from the top of the upper tower, reheated by the liquid nitrogen liquid-air subcooler and heat exchanger, and discharged out of the fractionation tower. It is sent to the user through the process pipeline or is pressurized by a nitrogen compressor and poured into cylinders for sale. .
The waste nitrogen gas is extracted from the waste nitrogen port of the upper tower. After being reheated by the heat exchanger, part of it is used as regeneration gas for the purifier, and the rest is vented.
It is an adsorbent that produces oxygen from the air under a certain pressure. The purified and dried compressed air is adsorbed under pressure and desorbed under reduced pressure in the adsorber. Due to the aerodynamic effect, the diffusion rate of nitrogen in the pores of the zeolite molecular sieve is much greater than that of oxygen. Nitrogen is preferentially adsorbed by the zeolite molecular sieve, and oxygen is enriched in the gas phase to form finished oxygen. Then the pressure is reduced to normal pressure, and the adsorbent desorbs the adsorbed nitrogen and other impurities to achieve regeneration. Generally, two adsorption towers are set up in the system. One tower adsorbs and produces oxygen, and the other tower desorbs and regenerates. The program controller controls the opening and closing of the pneumatic valve, so that the two towers cycle alternately to achieve the purpose of continuous production of high-quality oxygen.
The complete system of the oxygen generator consists of the following components: compressed air purification components, air storage tanks, oxygen and nitrogen separation devices, and oxygen buffer tanks. If cylinders are needed to be filled, an oxygen booster and bottle filling device are installed at the end.
The pressure swing adsorption oxygen generator uses zeolite molecular sieve as the adsorbent and uses the principles of pressure adsorption and pressure reduction desorption to adsorb and release oxygen from the air, thereby separating oxygen. Zeolite molecular sieve is a spherical granular adsorbent processed by a special pore processing technology. The surface and interior are covered with micropores. It is white in color. Its pore characteristics enable it to achieve precise kinetic separation. The separation effect of zeolite molecular sieve on gas and gas is based on the slight difference in the kinetic diameter of the two gases. The molecules have a faster diffusion rate in the micropores of the zeolite molecular sieve, and the molecular diffusion rate is slower. The diffusion of water and nitrogen in compressed air is not much different from that of nitrogen. What is finally enriched from the adsorption tower is oxygen molecules.
Working Principle of Low Temperature Air Separation Oxygen Generation Equipment
The air is sucked in from the atmosphere, filtered by the filter, and then enters the air compressor. After being compressed and cooled step by step, it enters the air pre-cooling system for pre-cooling and passes through the water The separator separates the free water in the air, and then enters the purification system to remove moisture, carbon dioxide and most hydrocarbons in the air.
The purified air enters the plate-fin heat exchanger in the cold box of the fractionation tower and performs heat exchange with the returning oxygen, nitrogen and dirty nitrogen. Then a part of the air is extracted from the middle of the heat exchanger and enters the turbine expander. Expansion refrigeration is carried out, and part of the expanded low-temperature air enters the upper tower, and the other part bypasses and enters the waste nitrogen pipe. The remaining air is extracted from the bottom of the plate-fin heat exchanger, and is sent to the lower tower for distillation after throttling.
In the lower tower, the air is initially separated. The top is pure nitrogen and the bottom is oxygen-rich liquid air. The oxygen-rich liquid air is extracted from the bottom of the lower tower, and is sent to the middle of the upper tower after being subcooled by the cooler. After the nitrogen at the top of the lower tower is condensed into liquid nitrogen by the condensing evaporator, part of it returns to the lower tower as the reflux liquid of the lower tower. The other part is subcooled by the cooler and then throttled into the top of the upper tower as reflux of the rectification section of the upper tower. liquid.
After rectification in the upper tower, pure oxygen is finally obtained at the lower part of the upper tower. After being reheated by the heat exchanger, the oxygen is discharged out of the fractionation tower as product gas, sent into the air bag, and then compressed by the oxygen compressor, filled into bottles or used for other purposes.
Nitrogen is extracted from the top of the upper tower, reheated by the liquid nitrogen liquid-air subcooler and heat exchanger, and discharged out of the fractionation tower. It is sent to the user through the process pipeline or is pressurized by a nitrogen compressor and poured into cylinders for sale. .
The waste nitrogen gas is extracted from the waste nitrogen port of the upper tower. After being reheated by the heat exchanger, part of it is used as regeneration gas for the purifier, and the rest is vented.
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