Pollution nitrogen deoxygenation device and PPM-level oxygen sensor: stable guarantee for high-purity gas production

In the modern chemical production process, the preparation of high-purity gas is a key link in many technological processes. As an efficient oxygen removal equipment, the waste nitrogen deoxygenation device plays an irreplaceable role in the production of high-purity gas. At the same time, in order to ensure the stability of the production process and the quality of high-purity gas, the application of oxygen content analyzers is also particularly important. The working principle of the pollution nitrogen deoxygenation device is to remove oxygen from the pollution nitrogen by adding hydrogen to the pollution nitrogen, using a catalyst to react at a specific temperature and pressure , and reacting the oxygen in the pollution nitrogen with the hydrogen to generate water. In this process, the measurement of oxygen concentration at the reactor outlet is the key to ensuring the reaction effect and the stable operation of subsequent processes. If the oxygen concentration is too high, it may mean that the reaction is insufficient or the oxygen-hydrogen ratio is improper, which will directly affect the quality of high-purity gas. Therefore, it is essential to install an oxygen content analyzer in the process. National standards stipulate that the oxygen content in high-purity gases should be controlled below a few ppm, so accurately measuring the oxygen content is very critical. The waste nitrogen deoxidation process consists of two parts: a waste nitrogen compressor and a deoxidation device. First, the pressure of the polluted nitrogen gas is increased to 0.5MPa through the action of the pollutant nitrogen compressor, and then it is transported to the deoxygenation area. In this process, the steam heater heats the gas to above 100°C, effectively suppressing the negative impact of carbon monoxide in the hydrogen on the deoxygenation reaction. Subsequently, the gas enters the deoxygenation reactor, which is filled with an efficient palladium-based catalyst. Under the action of a catalyst, oxygen and hydrogen react chemically to produce water and release a large amount of energy. After this reaction process, the purity of nitrogen reaches an astonishing 97%, providing high-quality raw materials for subsequent synthesis and compression. In order to ensure the stability of nitrogen quality, we set an analysis point for the oxygen content in nitrogen at the outlet of the deoxygenation reactor. After precise detection, the nitrogen concentration of the gas components was 97%, oxygen was 3ppm, hydrogen was 2.47%, carbon monoxide was 0.04%, and moisture was 0.39%. This strict quality control process ensures the purity and stability of nitrogen and provides a solid foundation for the synthetic compression process.
Oxygen content analyzers have high accuracy and stability, and their accuracy and stability largely depend on the performance of sampling and pretreatment. The pretreatment system is a key configuration of the entire analysis system. It can effectively reduce pressure, cool down, remove dust, and remove water from impurities to ensure the accuracy of analysis. This kind of pretreatment can not only reduce the frequency of equipment maintenance and spare parts costs, but also reduce the work intensity of maintenance personnel. As a sensor
for detecting PPM level oxygen concentration in an oxygen content analyzer , Gongcai.com recommends the American Southland PPM level oxygen sensor – TO2-1X . The measurement range is 0-10PPM and 0-10000PPM. It adopts micro fuel cell sensor technology and has high performance. Accuracy, long life and other characteristics, it is widely used in air separation equipment, chemical & petrochemical processes, steelmaking and other fields. Oxygen content British SST fluorescent trace oxygen transmitter – LOX-TRACE-1000-BLX can measure exposure to any oxygen concentration environment and will not damage the sensor. It has high selectivity and sensitivity for oxygen, fast response speed, and short purification time. It is directly connected to the controller through the RS485 interface. Oxygen measurement range 0-1000ppm In summary, the combined application of the waste nitrogen deoxygenation device and the oxygen content analyzer not only improves the efficiency and quality of high-purity gas production, but also reduces the company’s operating costs and maintenance difficulty. This technology combination will continue to play an important role in future chemical production and contribute to the continued progress and development of the industry.