About catalytic riser nozzle selection
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The CS series and KH series of nozzles that are used more frequently by domestic manufacturers are now available. Can you tell us which model is used in your factory, and what is the product distribution and yield?
We use CS-II type high-efficiency atomization series nozzles. The yield and effect are very good.
Our factory uses KH series nozzles.
We also use the KH-4 type nozzle, which works well.
It seems that you are the same as us. We encountered some minor problems during use. In order not to ruin other people's reputations, we will not discuss them in detail (to respect the rules of the forum). If you are interested, please send me an email. l7391037@people.com.cn The first letter is a lowercase L. Our catalyst is now using the cs series, and we plan to change it to the kh series 2# caomingzhe
Our factory uses CS series. When processing vacuum wax oil and coking wax oil, the general yield is about 78%.
The CS series of nozzles we currently use for our 600,000 tons/year heavy oil catalytic unit have better results. The original BWJ nozzles had poor results, so we changed them to the CS series.
Our 120Mt catalytic device also uses CS nozzles to process minus three, minus four and hydrocracking tail oil, and the effect is very good!
Our factory uses KH-3 type nozzles. It turned out that I also used CS type nozzles. There are different differences between the two. The CS type is prone to coking at the riser nozzle. Later, after it was changed to KH-3, the coking situation in the riser was greatly improved. However, the coking situation in the settler is serious. Later, after technical improvements, the upper and lower diameters of the heavy oil riser were changed, and the situation improved significantly. In terms of atomized steam, the CS nozzle in our factory only has one channel of atomized steam, while the KH-3 has two channels of atomized steam, which effectively ensures the atomization effect of the raw materials. Generally speaking, I feel that the KH type nozzle is easier to use than the CS type nozzle.