Hi there,
Hope you are doing well.
11549 rank is awesome and congratulations to you for such a good rank.
Now for your question, here are the probable NITs that you can get Chemical Engineering with their previous year closing ranks for General category in:-
1) NIT Trichy                11579
2) NIT Surathkal           12396
3) NIT Warangal           13933
4) MNNIT Allahabad      18010
5) SVNIT Surat             19162
6) NIT Rourkela            19874
7) MANIT Jaipur            20273
8) NIT Calicut               21692
9) MNIT Bhopal             22943
10) VNIT Nagpur           22484

Hope it would help.
Check out our college predictor to see your chances into various NITs, IIITs and GFTIs:-
https://engineering.careers360.com/jee-main-college-predictor

Thank You.