Major breakthrough in online chromatographic analy

2022-08-20
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Major breakthroughs have been made in pyrolysis gas chromatographic analysis

breakthroughs have been made in pyrolysis gas chromatographic analysis technology of ethylene cracking units in China. The development and service of chromatographic analysis system for ethylene cracking unit, a key scientific and technological project of Sinopec jointly undertaken by Tianhua chemical machinery and automation research and Design Institute and Yangzi Petrochemical Company, passed the technical appraisal organized by Sinopec in Beijing a few days ago

the stable operation of the chromatographic analyzer can be optimized. However, it is beneficial to detect materials with very large or very small elongation and obtain accurate experimental results. It provides important control data for ethylene production and improving ethylene yield. It is one of the key process parameters for ethylene installation. 6. Be careful not to plug and unplug power lines. According to the introduction, aiming at the problems of unstable operation and inaccurate sampling data of pyrolysis gas chromatography analyzer in petrochemical plant, this technology pioneered the secondary cyclone separation technology on the basis of the original sampler, so that the analytical sample gas can achieve good oil and gas separation effect after twice cyclone separation, and ensure the long-term stable operation of the analyzer

the application of new technology makes the analysis and measurement results of the chromatograph more accurate and stable. At the same time, the maintenance workload of the whole analysis system is greatly reduced, which effectively reduces the operation risk of the ethylene complex. The key technology of this achievement, the vortex refrigeration oil mist separation method, has applied for the national invention patent for allowing the piston to fall back freely

at present, the chromatographic analyzers of 10 ethylene cracking furnaces listed in the research plan operate stably and analyze data accurately, meeting the requirements of cracking depth control, and the success rate of research is 100%

ethylene cracking gas chromatographic analysis is to analyze the cracking gas produced from naphtha, light naphtha, atmospheric diesel, vacuum diesel, hydrogenation tail oil, ethane, LPG, etc., so as to detect the yield of cracking raw materials into cracking products - ethylene, propylene, butadiene, and measure the effect of cracking process

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