Introduction to the working principle and technical characteristics of laboratory nitrogen generator

　　Laboratory nitrogen generator refers to equipment that uses air as raw material and uses physical methods to separate oxygen and nitrogen to obtain nitrogen. According to the different classification methods, namely cryogenic air separation method, molecular sieve air separation method (PSA) and membrane air separation method, the nitrogen generators used in industry can be divided into three types.

　　First, I will introduce you to the working principle of the laboratory nitrogen generator:
　　1. Hollow fiber membrane separation technology is a high-tech developed in the middle of the twentieth century. In the past two to thirty years, it has developed rapidly in the world. Membrane separation technology is bringing huge benefits to mankind. The membrane has selective permeability and diffusion characteristics for certain gas components, so it can achieve the purpose of gas separation.
　　2. The hollow fiber membrane is actually a microporous tube with the same inner and outer diameter, and its structure is similar to that of a tubular heat exchanger. The fiber bundles are independent of each other, and the two ends of the membrane group are sealed with epoxy resin. Hundreds of thousands of fibers are bundled together to provide the required surface area.
　　3. Under the action of pressure, the adsorption, diffusion, and permeation rates of various gases in the hollow fiber membrane are different. They are arranged in order. We call the gas with high permeation rate as "fast gas", such as oxygen and water vapor; the permeation rate is small Is "slow gas", such as nitrogen. After the mixed gas penetrates the membrane, the "fast gas" is concentrated on the outside of the low pressure, and the "slow gas" is concentrated on the inside of the high pressure, thus realizing the separation of the mixed gas.
　　The following introduces you the technical characteristics of the laboratory nitrogen generator:
　　1. Choose high-strength, high-efficiency, low-energy molecular sieve, and intelligent interlocking unqualified nitrogen exhaust device to ensure the quality of product nitrogen.
　　2. The equipment has stable performance, simple operation, stable operation, high degree of automation, unmanned operation can be realized, and the annual operation failure rate is low.
　　3. The compressed air is equipped with an air purification and drying processing device. The clean and dry compressed air is beneficial to prolong the service life of the molecular sieve.
　　4. It adopts PLC control, which can realize fully automatic operation, optional nitrogen device flow, automatic purity adjustment system, and remote control system.
　　5. Perfect process design, uniform airflow distribution, reducing the impact of high-speed airflow. Reasonable internal components that reduce energy consumption and investment costs.
　　6. The adopted new pneumatic shut-off valve has fast opening and closing speed, no leakage, long service life, can meet the frequent opening and closing of the pressure swing adsorption process, and has high reliability.
　　The above is all the content that Xiaobian brings to you today, and I hope to enable you to better use the product.