Thermal integration of multiple effect evaporator in sugar plant

2009 ◽  
Vol 29 (2-3) ◽  
pp. 515-522 ◽  
Author(s):  
M. Higa ◽  
A.J. Freitas ◽  
A.C. Bannwart ◽  
R.J. Zemp
Keyword(s):  
Multiple Effect ◽  
Sugar Plant ◽  
Thermal Integration

scholarly journals Shale gas flowback water desalination: Single vs multiple-effect evaporation with vapor recompression cycle and thermal integration

Desalination ◽  
2017 ◽  
Vol 404 ◽  
pp. 230-248 ◽  
Author(s):  
Viviani C. Onishi ◽  
Alba Carrero-Parreño ◽  
Juan A. Reyes-Labarta ◽  
Rubén Ruiz-Femenia ◽  
Raquel Salcedo-Díaz ◽  
...  
Keyword(s):  
Shale Gas ◽  
Water Desalination ◽  
Flowback Water ◽  
Multiple Effect ◽  
Thermal Integration ◽  
Vapor Recompression ◽  
Recompression Cycle

Thermal integration analysis and improved configuration for multiple effect evaporator system based on pinch analysis

REAKTOR ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 74-93
Author(s):  
Indra Riadi ◽  
Zulfan Adi Putra ◽  
Heri Cahyono
Keyword(s):  
Production Capacity ◽  
Energy Utilization ◽  
Wash Water ◽  
Plant Production ◽  
Pinch Analysis ◽  
Multiple Effect ◽  
Pressure Steam ◽  
Sugar Plant ◽  
Energy Consumptions ◽  
Integration Analysis

Pinch analysis for a sugar plant production capacity 4000 TCD has been carried out to reduce its energy consumptions. The plant has ten evaporators that can be configured to several multiple effect evaporators. It has been running with five-effect evaporator (quintuple) scheme. To maximize energy utilization within the plant, three multiple effect evaporator schemes were evaluated. They are triple effect evaporator, quadruple effect evaporator, and quintuple effect evaporator as the benchmark. The result shows that the quintuple effect evaporator yields the highest energy efficiency by about 10%. Options to achieve such target is to use low pressure steam only for the first effect and to use steam bleeding from the first effect to heat a tertiary juice heater. With this proposed scenario, sugar dryer, wash water RVF unit and wash water HGF unit no longer need external steam for its operation.

Exergy and sensibility analysis of each individual effect in a kraft multiple effect evaporator

TAPPI Journal ◽  
2019 ◽  
Vol 18 (10) ◽  
pp. 607-618
Author(s):  
JÉSSICA MOREIRA ◽  
BRUNO LACERDA DE OLIVEIRA CAMPOS ◽  
ESLY FERREIRA DA COSTA JUNIOR ◽  
ANDRÉA OLIVEIRA SOUZA DA COSTA
Keyword(s):  
Optimization Problem ◽  
Real Data ◽  
Kraft Pulping ◽  
Steam Temperature ◽  
Input Flow ◽  
Transfer Coefficients ◽  
Heat Transfer Coefficients ◽  
Multiple Effect ◽  
Sensibility Analysis ◽  
Exergetic Analysis

The multiple effect evaporator (MEE) is an energy intensive step in the kraft pulping process. The exergetic analysis can be useful for locating irreversibilities in the process and pointing out which equipment is less efficient, and it could also be the object of optimization studies. In the present work, each evaporator of a real kraft system has been individually described using mass balance and thermodynamics principles (the first and the second laws). Real data from a kraft MEE were collected from a Brazilian plant and were used for the estimation of heat transfer coefficients in a nonlinear optimization problem, as well as for the validation of the model. An exergetic analysis was made for each effect individually, which resulted in effects 1A and 1B being the least efficient, and therefore having the greatest potential for improvement. A sensibility analysis was also performed, showing that steam temperature and liquor input flow rate are sensible parameters.

Multiple-Effect Solar Distillers

1987 ◽  
Author(s):  
Ho-Ming Yeh ◽  
Shau-Wei Tsai ◽  
Nien Tung Ma
Keyword(s):  
Multiple Effect

ENVIRONMENTALLY FRIENDLY POWER DISPATCH AT SUGAR PLANT WITH OPTIMUM BAGASSE UTILIZATION

2017 ◽  
Vol 16 (1) ◽  
pp. 235-243 ◽  
Author(s):  
Faisal Pazheri ◽  
Mohd Othman ◽  
Zakariya Kaneesamkandi ◽  
Nazar Malik
Keyword(s):  
Environmentally Friendly ◽  
Power Dispatch ◽  
Sugar Plant

Innovative and sustainable concept of regeneration of decolorization ion exchange resins

2012 ◽  
pp. 381-384 ◽  
Author(s):  
M.A. Theoleyre ◽  
Anne Gonin ◽  
Dominique Paillat
Keyword(s):  
Ion Exchange ◽  
Water Requirement ◽  
Ion Exchange Resins ◽  
Salt Solutions ◽  
Nanofiltration Membranes ◽  
Industrial Efficiency ◽  
Salt Consumption ◽  
Multiple Effect ◽  
Exchange Resins

Regeneration of resins used for decolorization of sugar solutions is done with concentrated salt solutions. Nanofiltration membranes have been proven effective, in terms of industrial efficiency in decreasing salt consumption. More than 90% of the salt that is necessary for regeneration can be recycled through a combination of direct recycling of intermediate eluates, the separation of colored compounds by use of very selective nanofiltration membranes and a multiple-effect evaporation of salty permeates. The desalted color compound solution is sent to the molasses, limiting considerably the effluent to be treated. Starting from a liquor of 800 IU, the water requirement is limited to less than 100 L/t of sugar and the amount of wastewater can be reduced to less than 40 L/t of sugar.

Innovative concepts of regeneration of decolorization ion exchange resins in sugar refineries

2016 ◽  
pp. 377-380
Author(s):  
Marc André Théoleyre ◽  
Anne Gonin ◽  
Dominique Paillat
Keyword(s):  
Ion Exchange ◽  
Reverse Osmosis ◽  
Energy Supply ◽  
Ion Exchange Resins ◽  
Salt Solutions ◽  
Nanofiltration Membranes ◽  
Local Conditions ◽  
Salt Consumption ◽  
Multiple Effect ◽  
Exchange Resins

Regeneration of resins used for decolorization of sugar solutions is done with concentrated salt solutions. Nanofiltration membranes have been proven effective, in terms of industrial efficiency in decreasing salt consumption. More than 90% of the salt that is necessary for regeneration can be recycled through a combination of direct recycling of intermediate eluates, the separation of colored compounds by use of very selective nanofiltration membranes and a system to concentrate salty permeates. According to specific local conditions on energy supply and cost, the concentration of salty permeates can be either a multiple effect evaporator or a combination of electrodialysis and reverse osmosis. The desalted color compound solution is sent to the molasses, limiting considerably the effluent to be treated. Starting from a liquor of 800 IU, the water requirement is limited to less than 100 L/t of sugar and the amount of wastewater can be reduced to less than 40 L/t of sugar.

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