Detailed product analysis method and product distribution automatic generation strategy for Fischer-Tropsch synthesis
Fischer-Tropsch synthesis reaction has the characteristics of complex product types,wide distribution of carbon numbers and long collection process.The qualitative and quantitative analysis of product components involves multiple steps,laborious spectrum peak identification and data processing,which is time-consuming,labor-intensive and easy to produce human errors.Combined with the latest analytical technology,a combination analysis method was designed and verified for the analysis of tail gas,water phase and oil phase low-carbon product components by one-dimensional gas chromatography,oil phase and wax phase products(C≤30)components by two-dimensional gas chromatography with backflushing device,wax phase products(C31～C100)components by high temperature simulated distillation,and C100+ product components by theoretical extrapolation.By using the data processing function of Python language,detailed product analysis and data automatic processing strategies of Fischer-Tropsch synthesis were proposed.Through in-depth analysis of product spectral peak data characteristics,corresponding quantitative calculation methods were proposed for different product flows,and an efficient and accurate automatic processing scheme for total product distribution of Fischer-Tropsch synthesis was finally formed.The accuracy of product distribution calculation under various operating conditions was verified.It is found that under the reaction conditions of Fischer-Tropsch synthesis with high chain growth factor(temperature of 275℃,pressure of 3 MPa,syngas space velocity of 35 L/(g·h)and n(H2):n(CO)= 1),the maximum carbon number of products determined by this method can reach 164.
Fischer-Trosch synthesisproduct distributionchromatographysimulated distillationretention time
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