If you have basic knowledge, you can read two review books from 6 months to a year. But looking at your question, it is estimated that you are likely to be the following

basic knowledge

If you don't have a foundation, spend two years reading advanced math and one year reading computer (advanced math accounts for 20% of the score, so increase your time appropriately); Get chemistry and physics in three years; Two and a half years to understand fluid mechanics, material mechanics, fluid mechanics (this part is more difficult, if you look at it on the basis of 0, you can change it to three and a half years);

chemical engineering thermodynamics

With the above foundation, the next chemical thermodynamics can be done in about 3 -6 months (retarded detour);

electrician

Then there is electrotechnics. Congratulations on your foundation in junior high school physics. Here you can shorten the time by about 2 months and stick to the expected 6-7 months.

professional ethics

The rest of the engineering economy and professional ethics can be taken with you at ordinary times, and it is enough to look at it for half a year.

Review the whole book

After reading the book, it only takes one year to practice comprehensively, and you can apply for it in September next year!

Beyond ordinary people

If the landlord has the ability beyond ordinary people, I can guarantee that you can definitely get the basic examination certificate of registered chemical engineer within ten years! I gave you such detailed cheats, and I'm sorry you didn't give the best!