Objective
ENERGY SAVING : The organics from the dissolved material in the cooking process remain in the black liquor as dissolved solids. This residue is used to generate live steam. The saving involved is 46% of the total live steam required for the factory pulp.
CHEMICAL PRODUCTS :The caustic soda used as reactant in cooking is dissolved in the black liquor together with the organics. About 90% of it is recovered and reused.
POLLUTION ABATEMENT : The black liquor with a high content of dry solids is concentrated and burned with the corresponding heat recuperation of the organics, and the mineral compounds (salts) are treated in a recausticizing plant, in such way that the reactives are regenerated, and pollution is prevented.L%
Different data reffered to the concentrated black liquors recovered in the Evaporation Plant are available in Progress Report 2.
1.INNOVATIVE TECHNOLOGY :
The EPYTEK SYSTEM is specially adapted to the small sized pulp mill. This simplified system controls pollution, generates steam by recovering heat from dissolved organics in the black liquor, and recovers dissolved chemical reactants for reused in pulping 2. OPERATING CONTEXT :
THe context in which the technology is operating is in non-wood factories pulp, working with special raw materials, such as flax, hemp, sisal, abaca, cotton, kenaf,...
Non-wood pulp and paper factories, however have a small yearly output. As well the fibres treatment as the black liquor treatment, from the pulping process, poses special problems that cannot always be solved with the conventional systems.
3. ECONOMIC ASPECTS :
Costs project Physocal, chemical differences
& an-, aerobic
processes
1,labour 36,9 19,2 17,7
2,power 26,2 30,4 4,2
3,heat 68,9 39,1 29,8
4,chemicals 144,1 71 215,1
5,raw mater. 18,2 * 18,2
6,Maintenance 15,5 7,3 8,2
TOTAL 116,2 88,8 205
Total TEP/y before project : 6.383
after project : 3.191
difference : 3.192 (50%)
Observations : Complementary recycled water from other sources, such as the combined condensates from the evaporator (14.5 m/h) for pulp washing, will improve even further the applications of water resources and lower the fresh water consumption.
4.MONITORING PROCESS SYSTEM :
All the group of processes will be controlled by a DCS ( Distributed Control System) of a top modern technology.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques.
- engineering and technologyelectrical engineering, electronic engineering, information engineeringelectronic engineeringcontrol systems
- natural sciencesearth and related environmental scienceshydrology
- natural sciencesearth and related environmental sciencesenvironmental sciencespollution
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Topic(s)
Call for proposal
Data not availableFunding Scheme
DEM - Demonstration contractsCoordinator
08006 Barcelona
Spain