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On August 17, the 800,000-ton/year ethylene plant of the Lanzhou Petrochemical Changqing Ethane-to-Ethylene Project has been running for half a month, with various data running smoothly
As the developer of this technology, the person in charge of China Huanqiu Engineering Co.
According to Wu Dejuan, the process manager of the project, the ethylene industry is the core of the petrochemical industry.
Ethane cracking to ethylene technology can better avoid this shortcoming.
To this end, the technical development team of China Huanqiu Engineering Co.
Large-scale cracking furnaces are the development trend.
Wu Dejuan introduced that decoking and degreasing of process water is the difficulty of this technology
In addition, the technology has also developed a hydrogenation separation process before deethane, using heat pump technology, and the cryogenic system has optimized the cooling capacity to achieve energy saving, emission reduction, cost reduction and efficiency increase
In particular, the emission of nitrogen oxides is reduced by 70% compared with the existing general-purpose ethylene plant, achieving ultra-low emission of waste gas; the waste water reuse rate reaches more than 95%, and the Lanzhou Petrochemical Ethane to Ethylene Project will become the first chemical industry with nearly zero waste water discharge from PetroChina.
The operating data of the Changqing Ethane-to-Ethylene Project further shows that with the help of global independent technology, the traditional ethylene production has solved the constraints of high energy and material consumption and low ethylene yield.