desilication of black liquor pilot plant tests

Enhanced Scrubbing of Black Liquor Boiler Fume by ...

BLACK LIQUOR CIRCULATING PUMP Fig. 4. General pilot plant installation arrangement. Fig. 5. Flooded-disc scrubber schematic. 624 demister outlet for determination of over-all system efficiencies. Results and Analysis of Scrubber Tests Figure 6 shows the results of flooded-disc scrubber tests on the raw salt cake fume as it leaves the recovery ...

Modeling of desilication of green liquor using artificial ...

Pilot plant studies on partial desilication of 250 m3/day of liquor by venturi absorber showed 90% efficiency in China4. Gruen5 investigated lime desilication at elevated temperature using excess of lime (up to 6 times of stoichiometric quantity). Jayme6 modified the process using semi-concentrated black liquor (30% solids) and reduced

Upgrading of biomass-derived liquids in a biorefinery ...

Up-scaled batches of the catalyst were prepared in-house to produce the amount needed for the pilot plant tests (50 g). The pilot plant experiments were conducted under the same experimental conditions as those in the bench scale unit, i.e. pressure of 30 bar and WHSV of 2 h-1. The total conversion of n-paraffins as a function of reaction ...

Settling and filtration characteristics of carbonated ...

11 Passinen B K, Lignin recovery from black liquor, Proc Symp Recovery of Chemicals, Helsinik, 1968. 12 Kopfmann K & Hudeczek W, Desilication of black liquor: Pilot plant tests, TAPPI J, 71 (1988) 140-177. 13 Chemical recovery plant for small pulp mills using non-wood raw materials, UNIDO/CPPRI Terminal Report Project

2-1 Recausticizing - Principles and Practice

of white liquor required from the recausticizing plant. Target values of Total Titratable Alkali (TTA) and Active Alkali (AA) and Sulfidity (% Na2S) are set by the digester design. Recausticizing system operators perform routine tests (ABC tests - See Tappi Test Methods for more details) to check that the plant is operating close to these design

(PDF) Desilication of agro based black liquor and green ...

These stages are: absorption of CO//2; conditioning of treated black liquor; separation of silica sludge from black liquor. After modifications to the system, the pilot plant obtained desilication ...

Hydrometallurgy - Academic Accelerator

Desilication of low alumina to caustic liquor seeded with sodalite or cancrinite: ... Experimental studies and pilot plant tests for acid leaching of low-grade copper oxide ores at the Tuwu Copper Mine: ... Effect of carbon black to facilitate galvanic leaching of copper from chalcopyrite in the presence of manganese(IV) oxide ...

On the influence of Si:Al ratio and hierarchical porosity ...

A study of black liquor and pyrolysis oil co-gasification in pilot scale A study of black liquor and pyrolysis oil co-gasification in pilot scale. ... Al ratio, and/or hierarchical porosity introduced via post-synthetic alkaline desilication treatment, have been evaluated as solid acid catalysts for esterification pretreatments of pyrolysis bio ...

Dr. Sanjay Naithani CV – UJPAH

Desilication Pilot plant for bamboo black liquor CPPRI Research report No.23. Supporting Desilication research work on Desilication of black liquor CPPRI,Research report No. 22. Basic black liquor properties. Synthetic lignosulphonate. Alkaline Peroxide Mechanical Pulp from Populus deltoides.

(PDF) The potential for bagasse pulping in Australia ...

Against these test Tappi J 139, (Oct 1988) (15) Judt, M. – Desilication problems can be overcome PPI Feb 1991, 65 cost imposts there are some offsets including the lower raw (16) Judt M. – Successful operation of industrial desilication plant in India material cost, the lower chemical costs for pulping and bleach- Straw – Opportunities ...

Determination of aluminum in bamboo pulp black liquor by ...

The aluminum concentration in black liquor produced from the cooking phase was below 10 μg/mL, with desilication agents in the range of 0.09 wt.% to 0.65 wt.%. The RSD obtained from ICP-AES measurements was below 0.5225%, indicating that the ICP-AES technique is a satisfactory method to determine the aluminum content in bamboo pulp black liquor.

(PDF) Desilication of agro based black liquor using bubble ...

pilot plant tests, TAPPI J, 71 (1988) ... Presence of silica in relatively high concentration causes several problems in chemical recovery plants. Desilication of black liquor, green liquor, soda ...

Peter Hart - Atlanta, Georgia, United States ...

When evaluating the composition of black liquor using material balance techniques that estimate the organics from the wood and the inorganics from the cooking liquor, the solids content of the ...

Leena Paavilainen, Jorma Tulppala, Antero Varhimo ...

removed from black liquor with commercial desilication techniques, by precipitation with ... of the plant at harvest. If reed canary grass is grown in humus-rich soil, produces a large ... The results of the laboratory tests were confirmed in pilot-scale trials by making

The History, Challenges, and New Developments in the ...

The paper serves as a brief overview of the history and trends in the management and use of bauxite residue, outlining: the dimensions of the problem; the characteristics of bauxite residue; how methods of storage and disposal have developed over time and the implications for bauxite residue use; an example of a soil less free rehabilitation method; the technically successful uses; the ...

Extractive Content - an overview | ScienceDirect Topics

For Strategy 3, waste biomass or black liquor could potentially be integrated into combined cycle gasification systems, thus increasing the efficiency of heat and power generation [53–57]. Alternatively, it is possible to use synthesis gas to synthesize fuels, including mixed alcohols, Fischer-Tropsch diesel [ 55 ], dimethyl ether [ 57 ], and ...

Efficient desilication by adsorption with aluminum salt ...

Full Article. Efficient Desilication by Adsorption with Aluminum Salt-modified Bentonite from Green Liquor. Tao Lin, a, * Xue Li, a, * Yongjian Xu, a,b,c Xuefeng Yin, a Dingjun Zhang, c and Yong Tian c The objective of this work was to investigate the possibility of using Na-bentonite as a raw material to produce aluminum salt-modified bentonite (AlMB) for desilication of green liquor.

Agro Residue_Paper Industry | Pulp (Paper) | Paper

Kulkarni has pioneered the research work on Desilication of black liquor with eventual development of mill scale plant, installed at Hindustan Newsprint Ltd., Kerala and High Rate Bio-methanation of black liquor rich effluent and a mill scale unit is successfully operating at Satia Paper Mi"s is another achievement of Dr. Kulkarni.

Method of black liquor combustion to remove silicon from ...

The purpose of this research is to study the effect of aluminum desilicating agents on the viscosity of thick black liquor, its isothermal volume expansion coefficient (VIE), and desilication rate, with an expectation to provide some data and basic theories of aluminum salt for pilot plant testing of the alkali recovery system.

(PDF) CHEMICAL RECOVERY TECHNOLOGY - A REVIEW | …

Recently, a pilot trial of desilication of rice straw black liquor was described. Partially concentrated black liquor at 8-14% solids was reacted with flue gas to drop the pH to between 9 and 10. The carbonated liquor was sent to a decanter to separate the precipitate from the clean liquor, and the filtrate was passed through a centrifugal ...

DesilicationofWheatStrawBlackLiquor

Black Liquor Desilication Black liquor desilication studies were conducted on semi pilot scale. The reactor consists of two communicating tubes of about 2.5 meter height and 10 em diameter, through which a high speed centrifugal pump circulates the black liquor to be treated. Near the upper end of the tube provision ismade

Mill case, simulation, and laboratory plant study of black ...

In this study, the impact of black liquor shocks on multiple stage biological treatment plant was studied. The tests were carried out in a lab scale plant and using a mathematical simulation model. The results showed good relation to a parallel situation at the Gruvön Mill. The MultiBio concept is persistent to short-term black liquor spills ...

Operating Experience of Black Liquor Desilication at APPM ...

The Demo and Semi Commercial plant for de-silicating the black liquor generated from 30 tons of Rice Straw pulp per day was commissioned in March, 2007. This article deals with the commissioning experiences and the trouble shooting of the plant after commissioning. Prior to the installation of the plant in depth pilot plant trials were ...

Entkieselung von Ablaugen aus der Herstellung von ...

In cooperation with the rice straw pulp mill of RAKTA, General Comp. for Paper Industry, Alexandria/Egypt, black liquor desilication tests have been made in a pilot plant with the aim of developing a large scale desilication process, which can be applied for alkaline black liquors prior to treating them in further conventional chemical recovery ...

LignoForce System - FPInnovations

The technical feasibility of producing lignin from black liquor using the LignoForce TM system can be evaluated initially with small amounts of black liquor at the laboratory and pilot plant levels at our facilities in Pointe-Claire, Quebec. Further investigations can then be conducted on a larger scale at FPInnovations' Thunder Bay demo plant.

Handbook On Pulp And Paper Processing by Npcs Board Of ...

Pilot Plant Trials at Cellulose and Paper Branch, Forest Research institute and colleges, Dehradun ... DESILICATION OF SULPHATE WEAK BLACK LIQUOR BY THE ADDITION OF LIME Experimental Procedure of Desilication Results & Discussion ... For all tests carried out TAPPI or ISI Standard methods or standard methods for the examination of water and ...

Desilication of agro based black liquor and green liquor ...

Desilication of agro based black liquor and green liquor using jet loop reactor ... pilot plant scale using a disc mill and achieved 50% removal of silica. Partial desilication of BL is achieved by storing (ageing)4 at elevated temperature, where silica together with some lignin precipitates.

Kinetics of CO sub 2 gasification of fast pyrolysis black ...

OSTI.GOV Journal Article: Kinetics of CO sub 2 gasification of fast pyrolysis black liquor char