There are no such very good private colleges available but you can consider below names which are only average -

KANAD INSTITUTE OF ENGINEERING AND MANAGEMENT - [KIEM], DURGAPUR
INSTITUTE OF ENGINEERING AND INDUSTRIAL TECHNOLOGY, DURGAPUR
BENGAL COLLEGE OF ENGINEERING - [BCE], DURGAPUR
SANAKA EDUCATIONAL TRUST'S GROUP OF INSTITUTIONS- [SETGOI], DURGAPUR
DURGAPUR INSTITUTE OF ADVANCED TECHNOLOGY & MANAGEMENT - [DIATM], DURGAPUR
DR. B.C. ROY ENGINEERING COLLEGE - [BCREC], DURGAPUR etc.

Hope this helps!!!