The role and the influence of fine pulp in sugar beet processing

2015 ◽  
pp. 370-374
Author(s):  
Ermanno Prati
Keyword(s):  
Sugar Beet ◽  
Infection Level ◽  
Correct Operation ◽  
Sugar Factory ◽  
The Press ◽  
Pressing Operation

Recycling of fine pulp, i.e. small pulp fragments, formed during pressing of exhausted cossettes impairs the correct operation and the performance of the pulp press station. In general, the recycling negatively influences the economics of a sugar factory causing increasingly higher costs in the course of the campaign, for example, due to lower perfomance of the pulp presses and extractors or by increasing the infection level In order to optimise the pulp pressing operation it is recommended first to separate fine pulp from the press water and then to press fine pulp by means of dedicated presses, thus increasing the overall value of pressed pulp.

Investigation of nitrite pathways in sugar beet extraction

2014 ◽  
pp. 626-635 ◽  
Author(s):  
Florian Emerstorfer ◽  
Christer Bergwall ◽  
Walter Hein ◽  
Mats Bengtsson ◽  
John P. Jensen
Keyword(s):  
Sugar Beet ◽  
Laboratory Experiments ◽  
Ph Value ◽  
Full Scale ◽  
Chemical Effect ◽  
Spectrophotometric Detection ◽  
Sugar Factory ◽  
Chemical Effects ◽  
Set Up ◽  
Nitrate And Nitrite

The investigations presented in this work were carried out in order to further deepen the knowledge about nitrite pathways in the area of sugar beet extraction. The article consists of two parts with different experimental set-up: the first part focuses on laboratory trials in which the fate of nitrate and nitrite was studied in a so-called mini-fermenter. These trials were carried out using juice from the hot part of the cossette mixer of an Agrana sugar factory in Austria. In the experiments, two common sugar factory disinfectants were used in order to study microbial as well as microbial-chemical effects on nitrite formation and degradation caused by bacteria present in the juice. The trials demonstrated that the direct microbial effect (denitrification) on nitrite degradation is more pronounced than the indirect microbial-chemical effect coming from pH value decrease by these bacteria and subsequent nitrite loss. The second part describes the findings from laboratory experiments and full scale factory trials using a mobile laboratory set-up based on insulated stainless steel containers and spectrophotometric detection of nitrite in various factory juices. The trials were made at two Nordzucker factories located in Finland (factory A) and Sweden (factory B). The inhibiting effect of the two common sugar factory disinfectants on nitrite formation was evaluated in laboratory trials, whereas the full scale trials focused on one disinfectant. Other trials to evaluate potential contamination sources of thermophilic nitrite producing bacteria to the extraction system, reactivation of nitrite producing bacteria in raw juice and the effect of a pH gradient on bacterial nitrite activity in cossette mixer juice are also reported.

Possibilities of joint treatment of spent sugar beet pulp and waste water from a sugar factory

2012 ◽  
pp. 756-761 ◽  
Author(s):  
Miroslav Hutnan ◽  
Štefan Tóth ◽  
Igor Bodík ◽  
Nina Kolesárová ◽  
Michal Lazor ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Sugar Beet ◽  
Pilot Plant ◽  
Biogas Production ◽  
Sugar Beet Pulp ◽  
Spare Capacity ◽  
Anaerobic Reactor ◽  
Sugar Factory ◽  
Beet Pulp ◽  
Joint Treatment

The possibility of joint treatment of spent sugar beet pulp and wastewater from a sugar factory was studied in this work. Works focused on processing of spent sugar beet pulp separately or together with other substrates can be found in the literature. In the case of some sugar factories, which have spare capacity in the anaerobic reactor on an anaerobic-aerobic wastewater treatment plant, joint processing of spent sugar beet pulp and wastewater from the sugar factory might be an interesting option. The results of the operation of a pilot plant of an anaerobic reactor with a capacity of 3.5 m3 are discussed. Operation of the pilot plant confirmed the possibility of cofermentation of these materials. The organic loading rate achieved in the anaerobic reactor was higher than 6 kg/(m3·d) (COD), while more than half of the load was provided by spent sugar beet pulp. The addition of sugar beet pulp decreased the concentration of ammonia nitrogen in the anaerobic reactor and it was even necessary to add nitrogen. However, the nitrogen content in sludge water depends on the C:N ratio in the processed sugar beet pulp, therefore this knowledge cannot be generalized. About 1.5 to 2-fold biogas production can be expected from the cofermentation of wastewater with sugar beet pulp in an anaerobic reactor, compared with the biogas production from just wastewater treatment.

Optimization of Pre-Stressed Press Frames

2012 ◽  
Vol 504-506 ◽  
pp. 625-630 ◽  
Author(s):  
Matteo Strano ◽  
Michele Monno ◽  
Andrea Rossi
Keyword(s):  
High Performance ◽  
Frame Structure ◽  
Analytical Models ◽  
Simple Analytical Model ◽  
Objective Functions ◽  
Global Optimization Algorithm ◽  
Fem Simulations ◽  
The Press ◽  
Pressing Operation ◽  
The Cost

Pre-stressing is a technique often used in presses, and it is obtained either by wire or tape winding or by bolted rods. Pre-stressing is always performed by combining two materials: one which is tougher and used as the pre-stressing medium and one which is less resistant and used as the pre-compressed casing. Pre-stressing can be applied for several reasons: for reducing the cost of manufacturing and assembling the press frames in case of very large tonnage presses, for reducing the deflections and elongations of the frames during pressing operation, for improving the fatigue resistance of the press components, etc. In this paper a simple analytical model of loads, stresses and deformations will be proposed for pre-stressed columns. The results of the model will be validated and compared to the results of realistic FEM simulations of the behavior of the press frame in operation. The equations of the analytical models will be then used as the constraints of a global optimization algorithm, implemented with Matlab. The results clearly show that, only if the press frame structure is monolithic, it is possible to obtain a solution which is truly optimal by pre-stressing, i.e. by combination of a more expensive and high performance material with a relatively “poor” material. This conclusion seems to be robust with respect to potential noise or uncertainty issues, which in this case are mainly related to the coefficient of the objective functions.

scholarly journals Multi-criteria optimization of beet juice obtaining process by press-diffusion method

2021 ◽  
Vol 82 (4) ◽  
pp. 30-37
Author(s):  
V. Y. Ovsyannikov ◽  
V. V. Toroptsev ◽  
A. A. Berestovoy ◽  
N. N. Lobacheva ◽  
M. A. Lobacheva ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Sugar Beet ◽  
Maximum Yield ◽  
Production Costs ◽  
Diffusion Method ◽  
Regression Equations ◽  
Pressing Pressure ◽  
Technological Parameters ◽  
The Press ◽  
Pretreatment Temperature

Currently, the application of advanced technologies in sugar factories is relevant. These technologies are based on the use of a combination of physical and energy effects on the feedstock and provide a reduction in sucrose losses at the stage of diffusion juice obtaining. A method of press-diffusion production of juice from sugar beet which allows to increase the yield of sucrose from beet chips and to reduce losses at the stage of diffusion juice obtaining and production costs is suggested by us. The press-diffusion method of extracting juice from sugar beet with the methods of mathematical planning and statistical processing of the experimental results was studied in the work. Regression equations and suboptimal parameters providing the maximum yield of beet juice with minimum energy consumption for its implementation were received in experimental plants under the influence of technological parameters, which were the pressure applied to the beet mass at the pressing stage, the temperature at the diffusion stage, and the pretreatment temperature of beet chips before pressing and the frequency of ultrasonic vibrations of the emitter in the diffusion installation. These operating parameters were the following: pressing pressure 0.27–0.33 MPa, pretreatment temperature of beet chips 334.2–337.3 K, diffusion temperature 342.5–345.0 K and frequency of ultrasonic radiation 21.25–23.36 kHz. The engineering nomograms presented make it possible to determine the value of the specific energy consumption and the value of the liquid phase output from the technological parameters of the press-diffusion method for producing beet juice in a quick and qualitative way.

Influence of laser irradiation on sowing qualities and infection level of sugar beet seeds

2019 ◽  
Vol 327 (2) ◽  
pp. 62-64
Author(s):  
O.A. Podvigina ◽  
O.I. Stognienko ◽  
E.S. Stognienko ◽  
◽  
Keyword(s):  
Sugar Beet ◽  
Laser Irradiation ◽  
Infection Level

Extraction and composition of pectins and hemicelluloses of cell walls of sugar beet roots grown in Morocco

2001 ◽  
Vol 36 (1) ◽  
pp. 35-46 ◽  
Author(s):  
Khalid Fares ◽  
C. M. G. C. Renard ◽  
Qamar R'Zina ◽  
Jean-Francois Thibault
Keyword(s):  
Sugar Beet ◽  
Cell Walls

Analyses of the stomach deposit that develops inMyzus persicaefeeding on sugar beet

1998 ◽  
Vol 23 (4) ◽  
pp. 347-353
Author(s):  
N. B. Kift ◽  
F. A. Mellon ◽  
A. M. Dewar ◽  
A. F. G. Dixon
Keyword(s):  
Sugar Beet

Protein synthesis in mitochondria purified from roots, leaves and flowers of sugar beet

1991 ◽  
Vol 83 (1) ◽  
pp. 7-16 ◽  
Author(s):  
Christina Lind ◽  
Christer Hallden ◽  
Ian M. Moller
Keyword(s):  
Protein Synthesis ◽  
Sugar Beet
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