Hi aspirant,
Here are list of engineering college that offer B. Tech chemical engineering.
IIT MADRAS
NIT TRICHY
VIT VELLORE
SASTRA UNIVERSITY,  TANJORE
Amritha engineering college cbe
Srm university chennai
Cut cbe
Prist tanjore
Periya maniammai university
Csir, sivagangai
Vel tech chennai
Alagappa college, chennai
Ssn college chennai
Hits cbe
Karpagam university
Saveetha engineering college
Adhiyaman college of engineering
Aadhiparaasakthi engineering college
The last few colleges have low fee structure and high possibility of obtaining seat
Hope this helps
All the best

Hello Aspirant

The following colleges have btech chemical engineering with low fees:

• NIT Trichy
• AIT Karaikudi
• CIT Coimbatore
• Bharat university
• Kalasalingam academy of research and education

Hope this helps you!