Equipment Introduction
Pure nitrogen, high-purity nitrogen equipment is a kind of equipment based on the air as raw materials, preparation of cryogenic nitrogen, high-purity nitrogen (nitrogen gas, liquid nitrogen) by a method of deep cooling. Pure nitrogen, high-purity nitrogen is widely used in petroleum, chemical, metallurgy, building materials, electronics, food, aerospace, medical and health fields. Our Company can provide users with a variety of small and medium types of purity nitrogen, high-purity nitrogen equipment and electronic equipment to purify. And in accordance with the requirements of the users of nitrogen production of the equipment, liquid nitrogen production, the product purity technical indicators, we can do the specific design, manufacturing and supplying complete sets. A brief flow introduction
The air is absorbed by air filter, entering no-oil lubricating centrifugal type air compressor after get rid of mechanism impurity like dust. After two-stage compression, cooled to normal temperature levels, access to pre-cooling units and heat exchange with Freon in cooling units and is cooled to about 5 ~ 8 ?, removing condensate water, and then purified into the molecular sieve, removing the residual moisture in it and carbon dioxide in the air and other hydrocarbons, and so on.
The purified dry air enters fractionation tower system, heat-exchanging in main heat-exchanger with return flow air, then the air is cooled down to about -150?. (Normal working condition) taking part of the air into the expansion refrigeration machine for expansion and cooling, and then move to the next tower, as rising gas involved in distillation. Another part of the air continues to meet the cooling air temperature liquefied gas, into the condenser K2 at the bottom of the next tower, condensed to be liquid air by oxygen-enriched liquid air under the lower tower,and then gets through the V1 valve after throttle into the middle bottom of the tower. As the oxygen, nitrogen components under the same pressure with the different boiling points , the air in the next tower gets block-by-plate distillation, and produce oxygen-enriched air at the bottom of the next tower, getting high-purity nitrogen on the top of the tower. After cooling of the oxygen-enriched liquid air at the bottom of the next tower by the cooler, then throttle in the valve V2 into condensate evaporation of liquid air side, gasification after heat transfer at the top of the next tower with nitrogen at the top of the next tower, the oxygen-enriched air is formed. , And then leaded from the top of the mail cooler, return to subcooler and the main heat-exchanger, then discharged from cold boxes after cold recovery, as a re-gas of the purification devices, some of the extra.
The purity nitrogen at the top of the next tower as part of the nitrogen products is sent to the user after reheated in the main heat exchanger when drawn out of the lower tower, and for the remaining nitrogen in the main cooler, a small amount of it is sent into storage tank as a liquid nitrogen product after being condensed, and is sent to outside of the tower at regular time. The rest of it returns to the top of the lower tower, as a circumfluence liquid of lower tower back to participate in distillation.
| MODEL | CAPACITY Nm3/h | CAPACITY L/h | PURITY (ppm) | PRESSURE BAR(Mpa(G)) | AIR PRESSURE Mpa(G) |
| KDN-150/10Y | 150 | 20 | =1 | 0.7 | 1 |
| KDN-200/20Y | 200 | 20 | =3 | 0.7 | 0.9 |
| KDN-300/25Y | 300 | 25 | =3 | 0.55 | 0.9 |
| KDN-500/30Y | 500 | 30 | =3 | 0.55 | 0.7(0.8) |
| KDN-800/40Y | 800 | 40 | =3 | 0.23 | 0.6 |
| KDN -1000/40Y | 1000 | 40 | =3 | 0.2 | 0.6 |
| KDN-1000/50Y | 1000 | 50 | =3 | 0.5 | 0.6 |
| KDN-1100/40Y | 1100 | 40 | =3 | 0.2 | 0.75 |
| KDN-1500/120Y | 1500 | 120 | =3 | 0.5 | 0.65 |
| KDN-1600/50Y | 1600 | 50 | =3 | 0.2 | 0.75 |
| KDN-1600/70Y | 1600 | 70 | =3 | 0.5 | 0.6 |
| KDN-2000/70Y | 2000 | 70 | =3 | 0.2 | 0.6 |
| KDN-2400/60Y | 2400 | 60 | =3 | 0.6 | 0.7 |
| KDN-2400/70Y | 2400 | 70 | =3 | 0.2 | 0.7 |
| KDN-2400/110Y | 2400 | 110 | =3 | 0.45 | 0.6 |
| KDN-3000/100Y | 3000 | 100 | =3 | 0.8 | 0.9 |
| KDN-4500/400Y | 4500 | 400 | =3 | 0.85 | 0.95 |
| KDN-5600/155Y | 5600 | 155 | =3 | 1 | 1.1 |