Regarding the issue of the three spins
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Everyone, what is the configuration of the catalytic three-spin system in your company? What are its operating conditions, and what are the operating conditions of the smoke exhaust equipment? What is the most advanced technology available for three-spin systems at present?
Large catalytic units with an annual processing capacity of over 1.6 million tons generally use horizontal tubular triple spinners. Its disadvantages are: the air handling capacity per individual duct is low, a large number of ducts are required, and installation and maintenance are relatively difficult ； It has a large height, resulting in higher material consumption for the external foundation steel frame, platforms, and piping systems. Other catalytic units generally use vertical tubular triple rotors. Its drawback is that the partition is prone to deformation at high temperatures, requiring special reinforcement ； It has poor adaptability to operational conditions over a century period ； The wear of single tubes is more severe than that of horizontal tube types. Advantages: Stable performance, easy to install and maintain, low equipment height, and low consumption of consumables.
My workplace uses vertical three-spin and cyclone-type three-spin systems; each set of these three-spin systems has been in use for over 10 years, and they exhibit high efficiency.
Currently, there are mainly four structural types of three-spinners used for heavy oil catalytic cracking in China: vertical multi-tube type, horizontal multi-tube type, Buehler type, and swirl type.
The three-spin configuration developed by SEI is similar to a coarse-spin arrangement within a three-spin shell, with 10 single three-spin tubes at the top. Lined inside. The pressure drop is high, and the efficiency is lower than that of a single tube. But if the regenerator has low leakage, this type is very suitable. Construction, investment, and maintenance are all significantly reduced.