To improve the yield of products, what are the typical control values for the top temperature, cut-off point, and low temperature in the catalytic fractionation process?
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To improve the yield of products, what are the typical control values for the top temperature, cut-off point, and low temperature in the catalytic fractionation process?
This post was last edited by smshe on 2011-5-20 21:17. Top of tower temperature: Boiling range of the product at the top of the tower; Middle temperature: Optimal reaction temperature for the catalyst (taking both conversion rate and reaction rate into account); Bottom of tower temperature: Boiling range of the product at the bottom of the tower
Reply to 2# smshe: We observe that the outlet temperature of the promotion pipe is stable at 518°C, reaching 108°C at its peak and dropping to 255°C, with a low value of around 345°C. Is this reasonable?
These temperatures are necessary to ensure that all product specifications are met; for example, the top temperature is intended to guarantee that the dry point of gasoline meets the required standards, while the intermediate temperature control is used to ensure that the dry point of diesel meets the requirements
The specific parameters vary from company to company and from one set of equipment to another. For example, the 70,000-ton and 500,000-ton units from Zhenghe are different from the current 1.4 million-ton unit; although there are similarities, what matters is that the product quality remains the same. The parameters of the production process need not be identical – for instance, the temperature at the bottom of the stabilizer can be 180 degrees in some units and 210 degrees in others, but the steam pressure and initial boiling point remain the same. Therefore, the operating parameters of the equipment are determined by the production process and the required product quality.