Coking wax oil goes into catalysis – is coking powder filtered?
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As the title suggests, have all the factories installed filters? What is the effect of coke powder on catalysis? What should be the limit on the coke dust content? Thank you!
Coking wax oil generally has a filter before entering the hydrogenation unit; it seems there is no such filter before it enters the catalytic unit, so entering it directly into the catalytic unit should not cause any problems. It’s just that the higher content of basic nitrogen in coker wax oil has an impact on the catalytic catalyst.
The presence of coke dust certainly affects the catalyst’s activity, and it also reduces the service life of the pumps. The amount of coke dust carried must be controlled by addressing the coking process itself.
In our production process, we currently use coker wax oil without a filter, and the performance is satisfactory; no issues have occurred.
Coking wax oil is, after all, a distillate oil – it contains very little coking dust! Think about it: which company these days processes heavy oil without catalysis? The residual carbon in that oil is much higher than that in coker wax oil! ! So there’s no need to worry about the impact of coking coke dust on the catalyst; just pay attention to the flow rate in terms of pipeline design, making sure it’s not too slow so that the material doesn’t settle inside the pipes! The biggest problem with using coker wax oil in catalytic processing is alkaline nitrogen, which affects the catalyst and its acidic sites; however, it causes deactivation during operation, but this issue is resolved after regeneration through carbon burning. For coking wax oil, pay attention to measuring the alkaline nitrogen level – it shouldn’t be too high! Also pay a little attention to the composition of the alloy; a blending ratio of around 20% should not pose any problems!
The content of coking dust in coked paraffin oil should be very low. There are no filters at the exit of the coking unit, and not much is known about catalysis either. From the responses from those upstairs, it seems that there are no filters even when the material enters the catalytic system as well; I’ve learned something from this. The output of wax oil from our unit is significantly different from the designed output; often it’s just enough to meet our own needs. The amount produced by the unit is usually 0, and when there is some output, it’s at most around 10 tons. Is this due to an excessively low circulation ratio?
Mainly, the basic nitrogen compounds in CGO affect the acidic active sites of the catalyst, thereby impacting its activity; furthermore, excessive incorporation of such compounds can also affect the quality of the product
It mainly depends on whether there is coke dust? If there is any, a filter is needed. It’s not that the lift pipe is afraid of coking powder; rather, if coking powder is present, it will accumulate on the baffle plates in the shell side of the heat exchanger, causing poor flow.