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| Application Fields: | Pharmaceutical |
| Certification: | RoHS, ISO, CE |
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Beijing LIdaheng Technology Development Co., Ltd. is a high-tech enterprise specializing in the research, development, design, manufacturing, sales and service of all kinds of air separation equipment and low temperature application equipment. The company has a number of national patent certificates, computer soft certificate, and passed the European CE certification and ISO9001 certification.
The company pays attention to scientific and technological innovation, cooperates with foreign counterparts, and exchanges and cooperation with many domestic research institutions, universities and colleges. Fully absorb domestic and foreign enterprises advanced design concept, strict management procedures and exquisite manufacturing technology. On the basis of sincere service support, bold use of new technology, new technology, enhance the company's product research and development, manufacturing and service capabilities, to energy saving, superior quality and diversification.
Through years of research and exploration in the gas industry, we always insist on providing high-quality products and professional services for customers in various industries. We adhere to the concept of serving global users with Chinese products, and use cloud technology to serve customers around the world more quickly and intuitively.
The company's products involve metallurgy, petrochemical, electronics, machinery, building materials, food, medicine, new materials and other fields. Products sell well all over the country, but also exported to Peru, Venezuela, Austria, Nicaragua, Iraq, India, Bangladesh, Pakistan, Philippines, Angola, Kazakhstan and other countries.
Physical properties
The diatomic character of the N2 molecule is retained after liquefaction. The weak van der Waals interaction between the N2 molecules results in little interatomic interaction, manifested in its very low boiling point.[1]
The temperature of liquid nitrogen can readily be reduced to its freezing point −210 °C (−346 °F; 63 K) by placing it in a vacuum chamber pumped by a vacuum pump. Liquid nitrogen's efficiency as a coolant is limited by the fact that it boils immediately on contact with a warmer object, enveloping the object in an insulating layer of nitrogen gas bubbles. This effect, known as the Leidenfrost effect, occurs when any liquid comes in contact with a surface which is significantly hotter than its boiling point. Faster cooling may be obtained by plunging an object into a slush of liquid and solid nitrogen rather than liquid nitrogen alone.
As a cryogenic fluid that rapidly freezes living tissue, its handling and storage require thermal insulation. It can be stored and transported in vacuum flasks, the temperature being held constant at 77 K by slow boiling of the liquid. Depending on the size and design, the holding time of vacuum flasks ranges from a few hours to a few weeks. The development of pressurised super-insulated vacuum vessels has enabled liquid nitrogen to be stored and transported over longer time periods with losses reduced to 2% per day or less.
Liquid nitrogen is a compact and readily transported source of dry nitrogen gas, as it does not require pressurization. Further, its ability to maintain temperatures far below the freezing point of water makes it extremely useful in a wide range of applications, primarily as an open-cycle refrigerant, including:
| NO. | LN80-A | LN120-A | LN240-W | LN500-W | LN720-W | LN1000-W | LN1200-W |
| Capacity(L/day) | 80 | 120 | 240 | 500 | 720 | 1000 | 1200 |
| Capacity (L/h) | 3 | 5 | 10 | 20 | 30 | 40 | 50 |
| Power(kW) | 8 | 9 | 11 | 20 | 25 | 35 | 40 |
| purity(99%~99.999%) | 99.9% | 99.9% | 99.9% | 99.9% | 99.9% | 99.9% | 99.9% |
| Outlet (MPaG) | ≥0.8 | ≥0.8 | ≥0.8 | ≥0.8 | ≥1.6 | ≥0.8 | ≥1.6 |
| Power supply | 380/50Hz | 380/50Hz | 380/50Hz | 380/50Hz | 380/50Hz | 380/50Hz | 380/50Hz |
| Cooling | air | air | water | water | water | water | water |
| Water cooling(m3/h) | - | - | ≥4 | ≥8 | ≥12 | ≥15 | ≥20 |
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