Problems with the forward and reverse sequences in lubricant production?
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Our toluene unit is going to be upgraded; the old dewaxing process will be replaced by a two-stage dewaxing and two-stage oil removal process. There’s also a 50 W-ton refining unit for fusel oils. I heard that we operate in normal sequence, using oils from the fourth and fifth grades, while another set of toluene dewaxing and oil removal units operates in reverse sequence, using oils from the second and third grades. Is there any difference between these approaches?
The overall energy consumption for producing lubricating oil in the normal sequence is relatively low. For toluene, the raw material is refined using furfural, which removes some impurities, thereby improving the quality of the raw material. Reverse production is necessary for some facilities or manufacturers that require furfural-extracted oil. You are Takahashi’s:funk:
Yeah, are you also from Area 1 of Takahashi’s team?
I’d like to know what positive sequence is What is reverse order?
Reply to 4# zhaochhf: In the normal production process, furfural is refined first and then toluene is used for dewaxing; in the reverse process, it’s the other way around – toluene is used first followed by furfural
I’m not from District 1, but I’m involved in production there
Oh, hehe:handshake
Why are you interested in the freezing station as well? I used to work at a centrifugal freezing station for 12 years; now I’ve been transferred to Station 2
Looking at your previous posts, I’ll ask questions about the freezing station
Station 2# with the same benzene cooling system is under renovation; please keep an eye on it: lol
Yeah, that’s right. Our centrifugal freezing units are being removed, and screw compressors will be used in their place