Selection of catalytic cracking termination
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We have a catalytic cracking unit with an annual processing capacity of 600,000 tons; there are two terminator nozzles at the upper part of the riser – one for crude gasoline and straight-run gasoline, and the other for acidic water. Everyone, please help – why is a terminator nozzle needed? What are the advantages and disadvantages of these terminators? ? ?
Acidic water is the best. It will not cause secondary cracking of crude gasoline.
http://wenku.baidu.com/view/15955f4ffe4733687e21aa8e.html Analysis of the issues related to terminators!
It’s best not to add any terminator, as this will lead to increased energy consumption~~~ If the reaction time is long and adjusting the reaction temperature does not improve the distribution of the product, it is possible to consider adding a smaller amount of terminator; be sure to use only a small amount~~~ With a well-designed lift tube, there is no need to add a terminator~~~