Beijing Lidaheng Technology Co., Ltd. focuses on the development and production of gas separation technology and equipment, with pressure swing adsorption nitrogen production and gas purification and other products. Has a group of engaged in nitrogen machine, nitrogen machine, food nitrogen machine, pressure swing adsorption type nitrogen machine product design, production, technology development of technical personnel, to adapt to and meet the needs of nitrogen machine product diversity. According to the different needs of customers, design and manufacture the required products. Reliable quality of products and perfect after-sales service, will make the majority of customers satisfied. We always attach importance to product quality, adhere to the "customer requirements is our responsibility, and strive to provide customers with good products" guidelines, commitment to product lifelong service. Warmly welcome new and old customers to visit. Sincerely hope that there are more old and new friends to work together to create a better future.
Liquid Nitrogen system - Small liquid nitrogen machine
LDH small liquid nitrogen machine is a plug-in liquid nitrogen solution. Using the MRJT process of mixed working medium refrigeration, based on the throttling refrigeration cycle of the reheating type multiple mixed working medium, from the ambient temperature to the target refrigeration temperature, the high, medium and low boiling point pure components are selected to form the multiple mixed working medium, and the effective cooling temperature zone of each boiling point component is matched by relay. It is a refrigerator that can efficiently realize the temperature zone of -40~-196ºC.
| Model |
LPLN-3 |
LPLN-5 |
LPLN-10-W |
LPLN-20-W |
LPLN-40-W |
| Liquid nitrogen production (L/day) |
80 |
120 |
240 |
500 |
720 |
1000 |
1200 |
| Liquid nitrogen production (L/h) |
3 |
5 |
10 |
20 |
30 |
40 |
50 |
| Installed power(kW) |
8 |
9 |
11 |
25 |
25 |
35 |
35 |
| Type(AC V) |
380/50Hz |
380/50Hz |
380/50Hz |
380/50Hz |
380/50Hz |
380/50Hz |
380/50Hz |
| Cooling form |
Air cold |
Air cold |
Water cold |
Water cold |
Water cold |
Water cold |
Water cold |
The working principle of
The compressed air passes through the oil-free air compressor, after cold dry absorption and filtration, enters the PSA nitrogen maker, passes through the sterilizing filter, and generates sterile nitrogen with dew point of -60ºC. Sterile nitrogen enters the refrigerator and liquefies into liquid nitrogen.
Technical principle of liquid nitrogen machine
The liquid nitrogen machine is a cryogenic mixed working medium throttling refrigerator driven by a single compressor with precooling to achieve nitrogen liquefaction (-180ºC). Cryogenic mixed working medium throttling refrigerator is based on the regenerative type of multiple mixed working medium throttling refrigeration cycle. From the ambient temperature to the target refrigeration temperature, the highest, middle and low boiling point pure components constitute multiple mixed working medium, and realize the relay matching of the effective cooling temperature zone of each boiling point element. It is a kind of refrigerator that can be used to realize the temperature zone of -40ºC~-196ºC. The advantages of this product are: it can use mature commercial compressors, heat exchangers and other equipment in the market; High liquefaction efficiency, high reliability, no maintenance, long service life.
The principle of liquid nitrogen machine equipment is based on the principle of pressure swing adsorption, using high-quality carbon molecular sieve as adsorbent, under a certain pressure, nitrogen from the air. After purifying and drying compressed air, the adsorption and desorption are carried out under pressure and pressure in the adsorber. Due to the kinetic effect, the diffusion rate of oxygen in the micropores of carbon molecular sieve is much higher than that of nitrogen. When the adsorption is not in equilibrium, nitrogen is enriched in the gas phase to form the finished nitrogen. Then the pressure is reduced to normal pressure, and the adsorbent desorbs the adsorbed oxygen and other impurities to achieve regeneration. Generally set up two adsorption tower in the system, one tower adsorption nitrogen production, the other tower desorption regeneration, through PLC program automatic control, so that the two tower alternating cycle work, oxygen and nitrogen adsorption separation, so as to get qualified nitrogen.
Product features
Liquid nitrogen production: 10L-120L per day
Regular start and stop: You can set the power on and off time every day
Start and stop of liquid level: If equipped with liquid nitrogen tank with liquid level gauge, start and stop can be controlled according to the liquid level and display the liquid level
Remote MONITORING: MCGS remote monitoring, remote download of historical operation records, online program upgrade, convenient remote maintenance
Fully enclosed box type compact design
Liquid nitrogen dewar (optional)
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