NISCAIR Online Periodicals Repository

Research Journals >
Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.14 [2007] >
IJCT Vol.14(6) [November 2007] >

Title: Desilication of agro based black liquor and green liquor using jet loop reactor
Authors: Mandavgane, Sachin A
Paradkar, G D
Varu, J
Pamar, R
Subramanian, D
Keywords: Black liquor
Green liquor
Issue Date: Nov-2007
Publisher: CSIR
IPC CodeD21C
Abstract: Non-wood fibers represent the largest resource of fibrous materials for many developing countries in the world. Attention is now being focused on cellulose bearing agricultural residues, which can be used as raw materials for production of paper. Though chemical pulping of these raw materials poses no problem, major difficulty arises in the recovery of heat and chemicals from the spent cooking chemical (black liquor). The presence of silica in black liquor obtained from agro based pulp and paper mill causes serious problems at filtration, washing, evaporation, burning, recausticizing and clarification levels of chemical recovery. It is, therefore, necessary to remove silica before the black liquor is concentrated to high solid content. The success of the desilication process by carbonation lies in accurate pH control otherwise lignin co-precipitation occurs during desilication. In the present work, a high mass transfer efficient, compact Jet Loop Reactors (JLR) or some times called as Highly Compact Reactor (HCR) is used for desilication to obtain exact pH control. The experiments were carried out in a 15 L reactor at room temperature as well as at higher temperatures. The results obtained in JLR are compared with those obtained by Bubble Column Reactor (BCR). Desilication of green liquor in both the reactors at different temperatures is also studied. The results show that desilication in JLR is more efficient at higher temperatures.
Page(s): 606-610
ISSN: 0971–457X
Source:IJCT Vol.14(6) [November 2007]

Files in This Item:

File Description SizeFormat
IJCT 14(6) (2007) 606-610.pdf184.5 kBAdobe PDFView/Open
 Current Page Visits: 173 
Recommend this item


Online Submission of Articles |  NISCAIR Website |  National Knowledge Resources Consortium |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2015 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 168047 since 01-Sep-2015  Last updated on 29-Jun-2016Webmaster: