The small mobile laboratory liquid nitrogen machine LPLN-3 is mainly composed of a pressure swing adsorption nitrogen generator and a nitrogen liquefaction unit. The nitrogen liquefaction unit consists of a mixed refrigerant throttling refrigeration stage and a carrier refrigeration cycle stage. Among them, the refrigeration cycle stage transfers the cold energy between the mixed refrigerant throttling refrigeration stage and the nitrogen flow path
The mixed working medium in the throttling refrigeration stage of the mixed working medium is throttled by the single-stage compressor, condenser, and regenerative heat exchanger to provide cold capacity for the refrigerating cycle. The refrigerant is cooled by the mixed working fluid throttling refrigeration stage in the regenerative heat exchanger after passing through the compressor and the condenser, and then enters the nitrogen liquefier after throttling to provide cold energy for the nitrogen liquefaction supplied by the PSA nitrogen production unit . The mixed refrigerant pre-cooler is based on a regenerative throttling refrigeration cycle. From ambient temperature to target refrigeration temperature, high, medium and low boiling point pure components are preferably composed of multiple mixed refrigerants, so that the effective cooling temperature areas overlap each other partially, In this way, the cooling temperature zone distribution matching is perfected, and the effective cooling temperature zone matching of each boiling point component is realized, thereby realizing high-efficiency refrigeration with a large temperature span, and a relatively high throttling refrigeration effect can be obtained under a relatively small pressure difference. This makes it possible to adopt a closed-cycle throttling refrigerator driven by a single-stage compressor.
Application of small mobile laboratory liquid nitrogen machine LPLN-3:
Mainly based on universities and scientific research laboratories, the advantage is that it can produce liquid nitrogen independently, and can be produced as soon as it is used. There is no need to purchase liquid nitrogen dewars remotely, which improves the convenience of use.
convenient and small, easy to move, low energy consumption.
During the use of the equipment, one-key startup and one-key shutdown can be realized, and the degree of automation is high. Generally, it can be realized after simple training without too much professional knowledge and skills.
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!