Researches And Applications Of Calculating Methods About Ethene Tube Pyrolyzer

Based on predigestion two-dimensional model about ethene pyrolyzer established by Da Qing Petroleum Institute and characters of literature reported about two-dimensional model, a promoting pyrolyzer reaction tube two-dimensional model based on 49 species and 49 reactions sophisticated system, is founded. The model uses FOR90 language, which has big calculating capacity, good construction and well being read to edit program, It uses method of controlling cubage of total hiding to calculate material and heat balances equation of such system, and uses slowly iterative technic and scan point by point to calculate linear equation after dispersing. This design consider effect of radial diffuse item on the cracking process, and calculate simulate to EF-111E pyrolyzer about two different material in Da Qing using the program. Calculating consequence, Compared with the datum in documents, shows: the algorithm according to commercial operation results has good astringency, quick rapidity of calculation, and has rationality to radial temperature and concentration, especially near tube wall, the current of change is ideal to radial velocity, temperature and concentration. A series of complete data for optimization of running conditions of pyrolyzer and for design of reaction tube may be supplied. This shows two-dimensional model improved has good reliability.