High purity nitrogen production equipment

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 liquid nitrogen Nuclear magnetic resonance (NMR) spectroscopy provides qualitative structural information about the type, number, existing form, connection mode and relative orientation of atoms in molecules through the spectra of different nuclei, chemical shift values, peak multiplicity, coupling constant values, peak relative strength and correlation peaks in various two-dimensional and multi-dimensional spectra.  liquid nitrogen The quantitative analysis of NMR is based on the structure...


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 liquid nitrogen

Nuclear magnetic resonance (NMR) spectroscopy provides qualitative structural information about the type, number, existing form, connection mode and relative orientation of atoms in molecules through the spectra of different nuclei, chemical shift values, peak multiplicity, coupling constant values, peak relative strength and correlation peaks in various two-dimensional and multi-dimensional spectra.

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 liquid nitrogen

The quantitative analysis of NMR is based on the structure analysis. The relationship between the number of protons of specific groups and the peak area of corresponding peaks is used for quantitative determination. Nuclear magnetic resonance (NMR) spectroscopy is mainly used to determine the structures of small molecules of organic compounds and biomacromolecules in solution. It is widely used in chemistry, biology, physics, materials, pharmacy and medicine

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The superconducting magnet is immersed in liquid helium, and the outer layer of liquid helium is liquid nitrogen. The function of liquid helium is to maintain the superconductivity of the magnet to provide the required magnetic field environment. The purpose of liquid nitrogen is to add a “insulating layer” between the liquid helium and the external environment to reduce the volatilization of liquid helium.

Model LPLN3 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

CryomedicineThe rapid development of clinical hypothermia in China has promoted the development of transplantation medicine, especially in the cryopreservation and transplantation of bone marrow, hematopoietic stem cells, skin, cornea, endocrine glands, blood vessels and valves. Successful hematopoietic stem cell transplantation depends on the preservation of hematopoietic stem cell viability. During the cooling and freezing process of biological samples, a certain amount of heat will be released during the phase transition from liquid to solid, which makes the temperature rise. The freezing process without controlling the cooling rate will lead to the death of tissue cells. The key to improve the survival rate of frozen samples is to accurately determine the phase transition point of biological samples, and to program the cooling program with microcomputer, so as to increase the input of liquid nitrogen during the phase transition of samples, overcome the temperature rise of phase transition samples, and make the cells pass the phase transition period safely and quickly.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 requirementsLiquid nitrogen production: 1-50L / h
Storage capacity: 120L, environment: 10 ºC – 38 ºC
Control: PLC touch screen, power: 200v-400v, 3P, 50 / 60Hz


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  • Beijing LDH Technology Development Co., Ltd is a company specializing in gas separation equipment. There are mainly integrated enterprises in the design, research and development, production and sales of nitrogen generators, oxygen generators, ozone generators and liquid nitrogen generator. In the years of production and sales, we have met friends from all over the world and established a good partnership. Products are exported to Bangladesh, Indonesia, Pakistan, the Netherlands, Brazil, Australia and other countries.

    The company has more than 10 years of experience in the professional technical team is engaged in gas design, research and development, to provide users with pre-sale, in-sale, after-sales technical support, including technical design, drawings, schedules, key projects, guidance installation, training, etc…Our equipment is subject to international standards. Before the equipment leaves the factory, we will conduct a comprehensive inspection and testing of each equipment so that each equipment can reach the standard before leaving the factory.

    Our working attitude is to make every reliable product, solve the actual problems of customers, make every beautiful product, let customers feel not only easy to use, but also good-looking.

    Our goal is to become the best enterprise in China’s gas separation industry. We have modern factories, modern production tools and young and passionate colleagues. We will strive to surpass ourselves and provide gas solutions for enterprises all over the world. We will use the best service to reflect our professionalism!

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