DEAR Liquid air separation unit.If the tray leaks, the purity will be destroyed more quickly. Therefore, when the forced valve breaks down, it will cause a series of changes in the tower, the working condition will be destroyed, and the harm will be great, so we must pay enough attention to it.DEAR Liquid air separation unit.For the same oxygen generator, the amount of accumulated liquid required is the same, so the cooling capacity required is the same. However, the total cooling capacity and total cooling loss of an oxygen generator are related to the specific conditions, and sometimes there is a big difference. It is related to the installation, maintenance quality and start-up operation of the oxygen generator.The better the ability of liquid oxygen to scour the wall of the channel, the more acetylene and other hydrocarbons are not easy to precipitate on the wall, and the carbon dioxide particles are not easy to block the channel section; from the perspective of heat transfer, because the boiling heat transfer coefficient of the liquid oxygen side of the plate fin condensing evaporator is related to the fluid flow, the better the flow is, the greater the heat transfer coefficient is.
DEAR Liquid air separation unit.Platinum plating on activated alumina. The catalyst can directly hydrogenate oxygen to water at room temperature and raise the temperature to 130-400 ℃. The oxygen content is less than 0.5 × 10 ~ (- 6) and no additional heat source is needed. But it's expensive.DEAR Liquid air separation unit.Adjust the excess hydrogen in hydrodeaeration to meet the process requirements. Adjust the working conditions of the deaerator, and the furnace temperature is generally stable between 350 ℃ and 450 ℃ (if the furnace temperature does not meet the requirements, the palladium metal on the surface of the palladium catalyst may be lost due to long-term use, and the efficiency will be reduced, so the palladium catalyst can be replaced);During the pressure relief of molecular sieve switching operation, if the pressure relief is too fast, because the pressure relief valve is under the molecular sieve bed, the pressure in the lower part of molecular sieve can be relieved quickly, and the pressure above the molecular sieve bed can only be relieved through the molecular sieve bed.
When there is liquid in the storage tank, it is strictly forbidden to use hot work for repair; the thawing of equipment pipeline should be heated slowly, and do not use overheated working medium or open fire to thaw; protective gloves should be worn when contacting low-temperature liquid to avoid direct contact between skin and low-temperature liquid; the transportation process should be stable, and there should be no big bumps.DEAR Liquid air separation unit.The oxygen content of liquid oxygen and liquid air in the air separation unit is high, which will cause the oxygen concentration to increase in local range after evaporation in the air. If there is a fire, there is a risk of combustion and explosion. A large amount of liquid oxygen was discharged into the trench in a chemical fertilizer plant, and the electric welding spark caused an explosion injury accident. Therefore, it is strictly forbidden to discharge the liquid into the trench at will, and it should be discharged into the liquid evaporation tank or special low temperature resistant metal discharge pit through pipeline.
