Generally liquid air separation plants have 2 combined expanders. The price is around 4 million RMB. The expansion air in the air separation plant is no longer required, so for the internal compression process air separation, the inlet air volume of the circulating booster is reduced by about 40% (from 5.A-2A). The energy consumption of the booster is reduced and the investment is reduced. Liquid air separation equipment, on the other hand, requires a low-temperature recirculating nitrogen press, which is a higher investment than an ambient temperature recirculating nitrogen press due to the lower temperature, and must be imported. For the internal compression process air separation also requires low temperature nitrogen presses, while liquid air separation plant cold energy use air separation device heat exchangers than conventional air separation device, so the overall investment in liquid air separation plant cold energy use air separation device investment is slightly higher than about 15%. The air separation system is an oxygen enriched area and natural gas, as a hydrocarbon, is an extremely sensitive hazardous substance. If the liquid air separation plant cold energy is recovered using a circulating nitrogen system, contact between liquid air separation plant and oxygen is eliminated as far as possible to ensure system safety. The safety of the air separation system in the liquid air separation plant receiving station is the key to the viability of the system.
Dear Air Separation attaches great importance to the design and development part of the product in the pre-sales phase, however, to make this part of the work solid, it is often inseparable from the long-term persistence and efforts of the company in the investment in research and development.
