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UPGRADATION OF TETRA ETHYLENE GLYCOL(TTEG) PROCESS USING CO-SOLVENTS

IR@IIP: CSIR-Indian Institute of Petroleum, Dehradun


Field	Value

Creator	Nautiyal,B.R Nanoti,S.M Khanna,M.K Prasad,Guru Paul,Dharam Garg,M.O

Date	2010-05-17T06:28:41Z 2010-05-17T06:28:41Z 2010-05-17T06:28:41Z

Identifier	547-Petrotech-05,2005 http://hdl.handle.net/123456789/562

Description	Pure aromatics like Benzene, Toluene and Xylenes are primary feed stocks for the petrochemical industry. With the growing demand for petrochemicals more and more extraction capacity will be needed. Commercial extraction units for the production of pure aromatics, worldover use Sulpholane (more than 160 units) as solvent, followed by Tetra ethylene glycol (more than 40 units). These solvents have high selectivity and optimum capacity. To enhance the capacity of these existing units, co-solvent have been tried which enhance the capacity of existing solvents. For example, CAROM process by UOP uses Tetra ethylene glycol + some glycol ethers as co-solvents. The same can be considered to enhance the capacity of Tetra ethylene glycol (TTEG) units. In this study, attempts have been made for the detailed studies on extraction of aromatics from naphtha reformate (60-90°C) fraction and model hydrocarbons (representing naphtha reformate fraction) as feedstocks with Tetra ethylene glycol (TTEG) + co-solvents under varying operating conditions followed by the solvent recovery step, with varying operating parameters i.e. co-solvent content of tetra ethylene glycol (TTEG), solvent to feed ratio, extraction temperature, etc. The results obtained in continuous extraction runs showed that S/F ratios of 2 to 3 is sufficient for extraction of aromatics in optimum yield and purity as compared to S/F ratio 4-6, in case of TETRA process.

Language	en_US

Subject	Co-Solvent Extraction Tetra ethylene glycol (TTEG) Selectivity Capacity Extract Yield Extract Purity

Title	UPGRADATION OF TETRA ETHYLENE GLYCOL(TTEG) PROCESS USING CO-SOLVENTS

Type	Article