China Ldh Nitrogen Production Equipment Price Air Compressor Pry

Product Description

LDH GAS Bovine sperm freezing liquid nitrogen generator


Company introduction

LDH GAS is a high-tech GAS company. We have been engaged in the development and production of GAS and liquid nitrogen products for more than 10 years. The core technical personnel of the company are composed of technical personnel from Peking University and Chinese Academy of Sciences, which has absolute advantages in technology. Our products are mainly: high purity nitrogen generator (99-99.9995%), high purity oxygen generator (90-99.5%) liquid nitrogen generator (95-99.9995%). The products are mainly used in industry, medical, laboratory research, cell research, biological science and so on. Our liquid nitrogen products have been sold to the United States, Peru, Southeast Asian countries, Germany, HangZhou, China, and are used stably at an altitude of 4500 meters
LDH GAS Bovine sperm freezing liquid nitrogen generator

1. Capacity from 3L/h to 50L/h. Meet all your requirements.
2. Low power consumption.
3. Automatic operate. One key start.
4. Small floor space.
5. Durable. Can work 24 hours per day.
6. One station of liquid nitrogen generator manufacture. ( we supply liquid nitrogen generator, vacuum tube and liquid nitrogen dewar.)



LDH Liquid nitrogen generator models and technical sheet:

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

LDH is 1 of the professional liquid nirogen generator manufacturer ,we can offer all modes of liquid nitrogen generators.
From 3L/hr to 50L/hr ,purity 95% to 99.999% 
We can offer 1 full system also can offer the parts of equipment as your need.
Any need welcome contact us,get more information 

LDH Liquid nitrogen generator drawing 

working principle


Mixed-refrigerant Joule-Thomson (MRJT) refrigerator at low temperature ranges driven by
single compressor with precooling is applied to liquefy nitrogen (-180ºC) for Nitrogen Liquefier
from TIPC, CAS. MRJT, a Joule-Thomson cycle based on reoccupation and multicomponent
mixed-refrigerants through optimizing various refrigerants with different boiling points
with a good match along with their respective efficient refrigeration temperature ranges,
is an efficient refrigerator for the temperature range from -40 to -196ºC.
The feature of this product is as following: the available mature commercial compressors
and heat exchanges, high liquefaction efficiency, high reliability, no maintenance and long life.



LDH LN2 Generatior applications 

Mainly in universities, scientific research laboratories, the advantage is that the independent
production of liquid nitrogen, with the production, no need to go far to purchase liquid nitrogen dew-pot, improve the convenience of use.

Output is customized from 1 litre to 50 liters per hour. Depending on the user’s usage.

Convenient compact, easy to move, low energy consumption.

During the use of the equipment, it can realize one-button startup and one-button shutdown with a high degree of automation. Generally, it can be achieved after simple training and does not require too much professional knowledge and skills.



In industrial production, liquid nitrogen obtained by compressed liquid air fractionation can be used as deep refrigerant. Because of its chemical inertia, it can directly contact with biological tissue and CZPT immediately without destroying biological activity, so it can be used as deep refrigerant

(1) Rapidly freezing and transporting food, or making ice products;

(2) Research on low temperature physics;

(3) Demonstrate the low temperature state in science education. At room temperature, a soft object soaked in liquid nitrogen will be as brittle as glass;

(4) Provides the temperature required for high temperature superconductors to show superconductivity.

(5) It can be used as refrigerant to quickly CZPT biological tissue to prevent tissue damage.

(6) It is used for industrial nitrogenous fertilizer.

(7) For chemical detection.
Uses of Liquid Nitrogen
Storage of sperm, eggs and other cellular materials
Beverage industry (coca cola ,juice bottling )
Glass industry
Freezing seafood
Nitrogen refinery
Tunnel freezin

Liquid nitrogen is a liquid with a low temperature of – 196 ºC and is obtained from nitrogen which occupies more than 70% of the air. Inert, colorless, non-toxic, volatile, very wide range of use. Liquid nitrogen is easy to volatilize at low temperature, so it is generally stored in a special container liquid nitrogen tank.

According to the use of liquid nitrogen purity classification, often divided into food grade liquid nitrogen, industrial grade liquid nitrogen. The purity of food grade liquid nitrogen is high, because considering the safety of human consumption, the purity reaches 5 9, that is 99.999%. The purity of industrial grade liquid nitrogen is not as high as that of food grade liquid nitrogen.

In the process of using liquid nitrogen, people often think that the safety is not good, but because of the low temperature of liquid nitrogen, it will gasify immediately when it meets air, so the safety is still guaranteed. Just pay a little attention to safety, and there should be safety awareness in any case.

Performance requirements

Liquid nitrogen production: 1-50L / h
Storage capacity: 120L, environment: 10 ºC – 38 ºC
Control: PLC touch screen, power: 200v-400v, 3P, 50 / 60Hz

Applications of Nitrogen
Nitrogen is very important gas for various industries including chemical where it is used for making fertilizers, nitric acid, nylon, dyes, and explosives. Being known for its inerting properties, nitrogen is ideal for preservation of food and making of diodes and transistors. The non-reactive gas is used on a large scale in annealing stainless steel and various other products used in the generation of steel. Annealing is a heat treatment that making it easier to work on steel. It is used for freezing foods and helping them to maintain texture, flavor, color and moisture. Numerous other applications include:

Liquid Nitrogen is used in many applications because of its very low temperature and low reactivity. Some of the common applications are:

It is used in cryo therapy to remove skin abnormalities
Serves as a source of an extremely dry gas
Freezing and transporting of food products
Cooling of superconductors like vacuum pumps, and other equipment
Cryo preservation of blood
Cryo preservation of biological samples like eggs, sperms, and animal genetic samples.
Preserving of animal’s semen
Branding of cattle
Cryosurgery (removing dead cells from the brain)
Quick freezing of water or pipes to let workers work on them when valves are not available.
Protects materials from oxidization.
The shielding of materials from oxygen exposure.
Other applications that include creating Nitrogen fog, making ice-cream, flash-freezing, flowering that shatters when tapped CZPT a hard surface.
If you require Liquid Nitrogen plant for your application, our team can CZPT you the best

Liquid nitrogen is a colorless, odorless, non-flammable, non-corrosive and extremely cold element that finds a lot of applications including research and development.

Liquid Nitrogen Liquefaction :

Liquid Nitrogen Plant (LNP) draws out Nitrogen gas from the atmospheric air and then liquefies it with the help of Cryo cooler.

There are 2 methods through which Nitrogen can be liquefied:

Pressure Swing Adsorption with Cryo generator.
Distillation of liquid air.
Working principle of Liquid Nitrogen Plant

In a Liquid Nitrogen plant, the atmospheric air is first compressed to 7 bar pressure into compressor. This high temperature compressed air is then cooled in  the external refrigeration system.  Then, the cooled compressed air is passed through moisture separator to trap the moisture from the air. This dry compressed air is then passed through a bed of carbon molecular sieves where Nitrogen and Oxygen are separated from the air. Separated Nitrogen is then allowed to get through Cryo cooler which cools the gaseous Nitrogen to a liquid state at the boiling point of Nitrogen (77.2 Kelvin). Finally, the Liquid Nitrogen gets collected in Dewar’s vessel where it gets stored for several industrial purposes.

The spectrum of nuclear magnetic resonance spectrum through different nuclear spectrum peaks, chemical shift value, multiplicity, coupling constant value, the relative intensity of peaks and present in all kinds of two-dimensional spectrum and multidimensional spectrum of the correlation peak, species, number of atoms in molecules, space form, the connecting way of atoms, the structure of the relative orientation of qualitative information.

Quantitative NMR analysis is based on structural analysis, using the relationship between the proton number of a specific group of molecules and the CZPT area of the corresponding spectrum. NMR spectroscopy is mainly used to determine the structure of small organic compounds and biological macromolecules in solution. It is widely used in chemistry, biology, physics, materials, pharmacy and medicine

Superconducting magnets are immersed in liquid helium, which is coated with liquid nitrogen. The role of liquid helium is to maintain superconductivity of the magnet to provide the desired magnetic field environment, and liquid nitrogen is to add a “temperature barrier” between liquid helium and the outside environment to reduce the evaporation of liquid helium.

After Sales Service

1, all products provide 1-year warranty, online guidance installation and debugging, installation and debugging video materials, all products to establish files, for years to provide a more convenient guarantee.
2. All products shall be tested on the machine before leaving the factory, and only after CZPT the standard can they leave the factory.

The Air Compressor Is a Versatile Tool

The Air Compressor is 1 of the most versatile tools in any garage or workshop. It is easy to use and can perform a variety of tasks, from jackhammering to drilling. These machines are available in a wide variety of sizes and types, making it an excellent choice for a variety of situations. With a single motor, you no longer need separate motors for each tool. Its lightweight, compact design makes it easy to handle, and the single motor also reduces wear on parts.


Oil-injected air compressors require a large amount of lubricant, which needs to be added to the sump regularly to maintain optimum performance. As there are many types of industrial fluids, a well-intentioned maintenance technician may add the wrong lubricant to the compressor. If this happens, the compressor will become incompatible with the lubricant, resulting in excessive carryover and the need to flush and replace downstream air treatment components.
Typically, the G 110-250 oil-injected rotary screw compressor from Atlas Copco provides reliable compressed air, preventing costly downtime. The G110-250 oil-injected rotary screw compressor is highly reliable and durable, enabling it to function in temperatures up to 46degC/115degF. Despite the oil-injected air compressor’s robust design, this unit requires very little on-site installation, and it features simple operation.
The primary advantage of oil-injected air compressors is the reduced cost of running. The cost of oil-free compressors is less than half of that of oil-injected ones, and it will require fewer maintenance costs in the long run. Moreover, the oil-free system is more environmentally friendly than oil-injected air compressors. But the drawbacks of oil-injected air compressors are substantial, too. It can contaminate finished goods and cause a significant financial risk for the manufacturer.
An oil-injected rotary screw air compressor offers several advantages over its counterpart. First, it features an innovative vertical design with variable-speed drive, allowing it to run more efficiently. Second, oil-injected air compressors reduce energy consumption by up to 50% compared to non-oil-injected air compressors. They also have a thermostatic valve, allowing them to maintain an optimum temperature. Thermostatically-regulated oil coolers allow the compressor to run more quietly.


What is an oil-free air compressor? The name refers to a type of air compressor that does not contain oil in the compressor chamber. Oil-free air compressors still use oil for various purposes, including lubricating the moving parts and managing waste heat. However, many people do not realize that their air compressor still requires oil for proper functioning. This article will explore why this type of air compressor is preferable for many users.
First of all, oil-free air technology has many benefits. For one, it reduces the energy cost involved in filtering air, and it minimizes leaks. Moreover, it also reduces the oil costs associated with compressor refills. And finally, it reduces the risks of contamination. Oil-free air technology is the future of compressed air. If you’re looking for an oil-free air compressor, here’s what to look for in your search.
Depending on the purpose of your air compressor, it may be beneficial to invest in an oil-free air compressor. Oil-lubricated air compressors are generally more durable than their oil-free counterparts, but they may cost twice as much. You should still consider the cost of ownership before purchasing an oil-free compressor. The oil-free models can be easier to transport, and they are more powerful. Moreover, they’re quieter than oil-lubed models.
An oil-free air compressor also means less maintenance, as it doesn’t need oil to work. This type of air compressors also features fewer moving parts, which means fewer places for problems to develop. All oil-free air compressors are manufactured to meet ISO Class 0 and 1 air purity standards. They also have less noise and vibration compared to their oil-based counterparts. So, why not choose an oil-free air compressor for your business?


When choosing a gas-powered air compressor, it’s important to consider the advantages of gasoline. This energy source can power a large air compressor without electricity. However, this type of air compressor lacks electrical hookup, so you’ll need to run an extension cord if you need to use it at a distance. However, gas compressors are able to function with just a gas tank. This makes them ideal for medium to heavy-duty industrial applications.
Another important consideration when choosing a gas air compressor is its size. Larger compressors are typically larger than portable ones and require more space. This makes them easier to transport and operate on the go. However, if you’re not sure which type of air compressor is best for you, consider the gas-powered versions. While they may be lighter, they don’t run as smoothly as their electric counterparts. Gasoline-powered compressors are not as portable as their electric counterparts and require proper maintenance.


Electricity in an air compressor is not cheap. A 25 HP air compressor runs for 10 hours each day, 5 days a week. The motor in these machines consumes 746 watts per hour. To find out how much electricity the equipment uses, multiply the wattage by the running time. For example, if the compressor runs for 3 hours, then it will use 1.9 kilowatt hours of electricity. To determine how much electricity an air compressor uses per day, you can calculate the kilowatt hours and multiply the number by the utility rate. Considering this, you can determine the cost of running your air compressor once per month.
The cost of operating an air compressor depends on the type of compressor. Electric air compressors are often silent and can run without any maintenance. These tools can be left unattended for up to 4 thousand hours before requiring repair. Electric air compressors require higher power for higher pressure, so you should plan accordingly. Whether or not you need a maintenance visit is up to you, but the benefit of not having to spend a fortune on repairs is priceless.
Although compressed air is not an energy-efficient source, its use in a variety of applications may save you money and kilowatts. Since an air compressor uses power when it is running, the cost is lower than the cost of operating a power tool. If you plan to use your air compressor for a long time, make sure that it is maintained properly. Proper care will save you money and power, and you may even be able to get an extended warranty if the compressor breaks down.

Variable frequency drive

The main purpose of a variable frequency drive (VFD) in an air compressor is to reduce energy consumption in the process of compression. A single motor drag system cannot adjust its speed continuously according to the weight of the load. By applying frequency control to the compressor, the power consumption can be reduced while maintaining the same pressure level. Therefore, a VFD is an excellent choice for compressors. Its benefits are numerous.
A VFD can also monitor the temperature of the motor and send error signals if the motor is running too hot or too cold. This eliminates the need for a separate sensor to monitor the oil pressure. These functions are useful not only in lowering energy consumption, but also in improving the performance of an application. Moreover, a VFD can monitor additional variables such as temperature and motor speed. Hence, it is a useful investment.
When using a VFD, it is crucial to choose the right motor. The speed of the compressor should be within the maximum starting limit of the motor. The air tank may be of any size, but a constant pressure limit is required to keep the VFD running within the service factor of the motor. In addition to a VFD, a master controller should also include a remote pressure set point and a PID card for a master controller. The transmitter should incorporate all useful data from the VFD, including the speed and the oil temperature. The VFD must be tested before it is integrated with the master control. It should be tested for min and max speed, temperature, and current within the expected range.
The use of a VFD in an air compressor has many benefits. One of the most notable is the reduction in power consumption. Fixed-speed compressors run on set points of 6 to 7 bar. An extra bar of compression uses 7 percent of energy. This energy is wasted. A VFD-powered air compressor can also increase the life span of compressor parts. It is 1 of the best investments in your compressor. So, why wait any longer?

China Ldh Nitrogen Production Equipment Price Air Compressor Pry  China Ldh Nitrogen Production Equipment Price Air Compressor Pry

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