Dr. Bachan Singh Rawat

Scientist G and HOD, Separation Processes Division

Areas of Interest:

Petroleum Refining, particularly physical separation processes like solvent extraction, adsorption, liquid and solid membranes, solvent dewaxing and deoiling processes.


Specialised in developing solvent Extration technologies for production of aromatics like benzene, toluene.

Consultancy Areas:

petroleum studies in general and studies related to liquid-liquid & vapour-liquid equilibrium, separations through membranes, adsorptions in particular.


Sector Associated With:

R & D

Sectors Interested to Offer Service:

Petroleum technologies related to petroleum separation processes mentioned above.

Major Professional Contributions:

1. Development & commercialisation of sulpholane extraction technology for production of pure benzene -toluene in collaboration with E I L.
2. Development & commercialisation of N M P extraction technology for production of food grade hexane. These are large scale plants operating in different refineries in India (BPCL, CRL, HPCL).

Professional Experience:

  • Worked for 34 yrs in R & D in IIP on the subjects mentioned above.
  • Was Emeritus scientist for 5yrs & was consultant to IOC R&D Centre, Faridabad for 2 yrs.


solvent extraction technologies for benzene extraction, liquid-liquid Equilibrium with hydrocarbon sulpholane/NMP, liquid Membrane studies for aromatics separation


Contact Information


52/1, Teg Bahadur Road - 3, Dehradun - 248001.

Phone: 9411110809 (M)


Email: This email address is being protected from spambots. You need JavaScript enabled to view it.



  • M. Sc., Chemistry
  • PhD


Awards and Major Professional Recognitions

CSRI technology awards : 4.

  • NRDC award.
  • CSRI Technoloy shield.
  • Best paper in Liquid Membrane work.
  • Doon Ratana etc.

Link to Website

INAE Section Affiliated To: Section IV: Chemical Engineering

Year of Election to Fellowship: 1998

Year of Birth: 1937