Reddit mentions of PPI Chemical Engineering Reference Manual, 7th Edition (Paperback) – A Comprehensive Manual for the PE Exam, Covers Thermodynamics, Mass Transfer, Plant Design and More

As a process engineer here are some books i either use almost every day, or find very very useful:

Rules of Thumb for Chemical Engineers:

https://www.amazon.com/Rules-Thumb-Chemical-Engineers-Fifth/dp/0123877857

Crane Technical Paper no. 410.

https://www.amazon.com/Fluids-Through-Valves-Fittings-TP-410/dp/B003152YTG

Chemical Engineering Reference Manual:

https://www.amazon.com/Chemical-Engineering-Reference-Manual-7th/dp/1591264103

GPSA Data Book (I have an electronic copy, your mileage finding a paper copy may vary):

http://www.browntechnical.org/products/gpsa-engineering-data-book-fps-english-unit.html

Just get the book man... thats all u need honestly. I took the book and a few other support books (but this is honestly the only one i used) and i passed the first time.

https://www.amazon.com/Chemical-Engineering-Reference-Manual-7th/dp/1591264103/ref=sr_1_3?ie=UTF8&qid=1521490020&sr=8-3&keywords=chemical+engineering+PE

Also get the practice question book - very useful

https://www.amazon.com/Practice-Problems-Chemical-Engineering-Exam/dp/1591264111/ref=sr_1_2?ie=UTF8&qid=1521490020&sr=8-2&keywords=chemical+engineering+PE

That's because they have 2 reference manuals that condense everything down:

https://www.amazon.com/Chemical-Engineering-Reference-Manual-7th/dp/1591264103/ref=sr_1_1?ie=UTF8&qid=1481981946&sr=8-1&keywords=pe+chemical+engineering

https://www.amazon.com/Perrys-Chemical-Engineers-Handbook-Eighth/dp/0071422943/ref=sr_1_3?ie=UTF8&qid=1481981968&sr=8-3&keywords=perry%27s

How'd she do? I'm just about to start studying, taking the ChE PE in the spring