External cooling air separation system using liquid nitrogen/liquid oxygen/LNG as the cooling source

Thread Content

Is there anyone among my friends who is interested in such a technology? Case study: A certain manufacturer needs to use LNG as fuel, and at the same time, nitrogen or oxygen is required for its processes. In this case, LNG can be used to provide cooling energy for the production of nitrogen and oxygen through a small-scale air separation unit (liquid products can also be produced; using liquid oxygen results in lower power consumption, as there is no need to vent oxygen). The power consumption is less than 0.3 kW·h/Nm3 for N2/O2 (electricity consumption). One ton of LNG can produce approximately 2 tons of LIN or LOX. If the manufacturer does not have LNG, we can purchase LIN externally to use as a cooling source. The amount of liquid nitrogen required is approximately 4% to 5% of the gas production volume. For example, if the nitrogen production requirement is 1000 Nm3/h, then the liquid nitrogen consumption per hour will be 50 Nm3/h. The power consumption is also less than 0.3 kW·h/Nm3 for N2/O2; the gas production volume ranges from 600 to 3000 Nm3/h, with a purity of over 99.999%.