In 1995, cooperate with Kaifeng air separation equipment factory Tianjin university first successfully revamped upper tower of 3200nm3/h air separation equipment. In these year, we work together with Kaifeng air separation equipment factory、Shchuan separation equipment group、Hangzhou oxygen manufacture machine factory have designed and making hundreds of air separation equipment, the scale of these equipment form 1000nm3/h to 28000 nm3/h. For example, a set of 6000 nm3/h air separation equipment, it’s main guideline like this:
Pure argon output: 190 nm3/h;Content of oxygen in Pure argon: 2ppm;Content of oxygen﹥99.6 %;Oxygen distill ratio 98 %;Dirt nitrogen purity﹤0.8%O2. Structure packing apply in air separation have strongpoint hereinafter:
1. The efficiency on mass and heat transfer, low HETP, high specific area, for instance, presently use packing, HETP=170-280mm, contrast to sieve-plate column the diameter of packing tower is small 30%.
2. the resistance of Structure packing column is 1/7-1/10 of sieve-plate column at the same theoretical stage, argon tower resistance only 0.01Mpa, this offer condition for higher argon distill ratio.
3. high flexibility, adapt wide range, it can work effectively in 40%-130% of normal load, the change of liquid load is effect little on packing efficiency.
save the energy. The main cost of air separation industry is energy, because of the low pressure drop, the coast of air separation production can reduce about 8%.
