Novel Impact of Wet Dosages of NMP in Extraction for Production of High BMCI Carbon Black Feedstocks
IR@IIP: CSIR-Indian Institute of Petroleum, Dehradun
View Archive Info| Field | Value | |
| Creator |
Manoj,Kumar
Mandal,Susanta Srivastava,Manoj Agarwal,U.C Garg,M.O |
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| Date |
2009-06-23T09:55:18Z
2009-06-23T09:55:18Z 2009-06-23T09:55:18Z |
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| Identifier |
http://hdl.handle.net/123456789/252
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| Description |
In separation sciences, “Solvent Extraction” is one of the most important
unit operations, a very widely used process, next only to distillation. In the petroleum
refining industry, solvent extraction is commonly widely applied to produce a number
of specialty products such as BTX, lube base oils, waxes, etc. There are many solvents
used in various separation processes, like sulfolane, phenol, furfural, ketones, and Nmethyl
pyrollidone (NMP). NMP in particular is an environmentally benign, new
generation solvent, which can be tailored for specific separations by using it in
conjunction with small doses of water. In recent years, researchers are re-looking at the
separation processes and their modifications to exploit these for producing high-value
industrial products from low-value refinery streams. The present study deals with the
production of high-quality carbon black feedstocks (CBFS) from clarified oils. The
study shows the beneficial effect of using NMP in combination with different dosages
of water as extraction solvent to extract low-value clarified oil, a cracked material
from the FCC unit of an operating Indian refinery. In the present study, water ranging
from 0.3 wt% to 10 wt% was used with NMP to produce aromatic extract of BMCI
(Bureau of Mines Correlation Index) up to 146 through liquid-liquid equilibrium and
mass transfer studies on clarified oil (CLO). The effect of solvent-to-feed ratio at
constant temperature on solvent extraction was also studied. The addition of water in
NMP alters the “selectivity” of solvent, which can be exploited for producing aromatic
extracts of a wide range of BMCI for different end-use applications. The major users
of such high BMCI extracts are carbon black and electrode pitch manufacturers.
Regression analysis was also done to develop correlations between water percentage
in NMP and targeted BMCI of aromatic extract. Presently, CLO is blended with fuel
oil and sold as a very low value product in refinery. Since the demand of CBFS is increasing continuously and current short-fall in India is met through imports from
China, Korea, and Japan, it is desirable that such studies are undertaken and will lead
to production of high-value CBFS from low-value refinery streams through separation
processes.
Keywords: BMCI, CBFS, CLO, NMP, regression, solvent extraction, water dosages
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| Language |
en_US
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| Subject |
Carbon Materials
Solvent Extraction CBFC NMP |
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| Title |
Novel Impact of Wet Dosages of NMP in Extraction for Production of High BMCI Carbon Black Feedstocks
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| Type |
Article
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