VUC Prague

Prague, Czech Republic

VUC Prague

Prague, Czech Republic
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Gebler J.,VUC Prague | Koznarova V.,Czech University of Life Sciences | Hajkova L.,Cesky hydrometeorologicky ustav
Listy Cukrovarnicke a Reparske | Year: 2016

The year 2015/2016 can be assessed as very successful although the values did not reach those of the previous campaign, which was historically the most successful as well as record-breaking in length. The article sums up the information on weather during the individual months of the year 2015. The text itself only comments on several values and is accompanied by tables with average or respectively summary data from the final technological, water-management, and energetical reports. There were seven sugar factories in operation, or rather five companies, similar number as during the previous years. The processing capacities ranged from 2,000 to 14,850 t/day of beet, campaign operation in the Czech Republic lasted from 21 September 2015 to 16 January 2016. The average sugar content of the processed beet reached 18.01%. The total amount of the processed standard beet was 4.017 mil. t, sugar 3.392 mil. t. The total physical production of sugar in the Czech Republic (i.e. production for the Czech Republic and foreign production, made-to-order, outside the Czech Republic) corresponds to the processing capability of 521,180 t, production only in the Czech Republic was 498,974 t. The biological sugar yield was 10.3 t ha. Apart from the production of white sugar, certified organic sugar and fermentation alcohol (bioethanol) were also produced. © 2016, Listy Cukrovarnicke a Reparske. All rights reserved.


Slavicek P.,Moravskoslezske cukrovary | Vyhnalkova H.,Moravskoslezske cukrovary | Gebler J.,VUC Prague
Listy Cukrovarnicke a Reparske | Year: 2015

The article describes the issues connected to organic beet processing and production of organic sugar (bio-sugar) and other organic products (organic molasses, organic pulp, organic sludge etc.) used in organic farming. In the Czech Republic, there is only a single sugar factory capable of processing organic farming products for sugar industry – Hrušovany nad Jevišovkou sugar factory that belongs to the group Moravskoslezské cukrovary, a. s., i. e., Agrana Group (Austria). Annual production of organic sugar is about 4,000–6,000 t. Other products necessary for organic farming are also produced (organic sludge – fertilization, organic pulp – fodder etc.). A number of tables show the results of analysis – conventional as well as organic sugar - regarding contaminating substances, granulometry etc. The amount of processed organic sugar beet from 2008 to 2013 can also be found there. © 2015, Listy Cukrovarnicke a Reparske. All rights reserved.


Gebler J.,Vuc Prague | Koznarova V.,Czech University of Life Sciences | Hajkova L.,Cesky hydrometeorologicky ustav
Listy Cukrovarnicke a Reparske | Year: 2015

The article presents assessment and campaign results of the year 2014/2015. Weather during 2014 could be viewed as ideal during the whole vegetation period in Bohemia and as less favorable in Moravia, which resulted in significantly lower sugar content. These differences could be seen already during the pre-vegetative period when the precipitations were 235% and 46% of long-term average; by the end of autumn, the precipitation rate changed (30% and 310%). The end of the year was characterized as warm, deviation of average annual air temperature from the long-term average was +0.8 °C. Sugar beet processing in Czech sugar factories was the longest since 1918 and took 178.5 days (from 8 September 2014 to 3 March 2015). Average output was 111%, which represents daily processing capacity in individual factories from 2,133 t d–1 to 20,398 t d–1 of sugar beet. Average sugar content was 15.98% (it was within 15.14–17.40%). The amount of produced sugar was 595,440 t in white sugar value. Total of 4.2 mil. t of sugar beet and 314 thousand t of sugar beet for bio-sugar was processed. The main investment projects before the campaign aimed at boosting storage capacities for sugar (three silos for total 90 thousand t) and molasses (35 thousand m3) and at improvement of operation and the environment (pulpress, central dust collector, WWTP for sugar factory and distillery, candle filter and new carbonator with Richter pipes as well as actualization of the software and process controlling of several technological stations). Failure of the Krupp India centrifuge can be considered a blessing in disguise. © 2015, Listy Cukrovarnicke a Reparske. All rights reserved.


Sarka E.,ICT Prague | Bubnik Z.,ICT Prague | Hinkova A.,ICT Prague | Gebler J.,VUC Prague | Kadlec P.,ICT Prague
Procedia Engineering | Year: 2012

The aim of C sugar operation in a sugar factory is a high quality C sugar for effective follow-up refining, minimizing sugar in molasses together with low energy consumption. On the other hand, biotechnology - ethanol fuel production - can change these targets: either sugar in molasses is increased for fermentation processing (higher sugar content) or C sugar operation is excluded from the sugar technology at all so that the refinery process can be simplified. To optimize the effect of cooling crystallization, a new static model was developed. The model involves balance equations for a horizontal crystallizer or for a part of vertical crystallizer of C-sugar operation and takes in account the balance of the sucrose ratio in liquid and solid phase. An addition of mixing media, such as syrup or water, into the crystallizer has been also considered. Molasses is applied in many food or non-food processes because of high content of nitrogenous compounds, carbohydrates and its sweet taste. Molasses is traditionally used in fermentation technologies to produce ethanol and for production of animal feed. The further potential applications are given. © 2012 Published by Elsevier Ltd.


Gebler J.,VUC Prague | Koznarova V.,Czech University of Life Sciences
Listy Cukrovarnicke a Reparske | Year: 2010

The sugar beet campaign 2009/10 was, compared to the previous one, characterized by a lower sugar content. The yield significantly increased, and is comparable with values of quality growers of the neighboring states. The amount of sugar prescribed by the quota system was easily fulfilled and, as in other EU states, even a certain amount of surplus sugar was produced: in the Czech Republic, this was 29% of total sugar produced (for bioethanol, chemical use, etc.) The whole EU quota for the 2009/10 campaign was 13,121 kt and the surplus quota 4,347 kt, thus 33.1%. The average sugar content was 16.85% (18.70-15.99%). The average duration of a campaign in the Czech Republic was 93.4 days, and the total production of white sugar from beet was 431.8 kt. Seven sugar factories were operating in the Czech Republic during the past sugar campaign, the total standard capacity was 37,394 tons per day while one of the factories had surpassed 14,296 tons in a single day. The data confirm the fact that the Czech Republic with a 200 year tradition of sugar beet production is among the leading sugar producers in the European Union. The article briefly mentions investment events aimed at the improvement of ecology, technology and energetics that were realized in Czech sugar factories during the 2009/10 campaign.


Gebler J.,Vuc Prague | Koznarova V.,Czech University of Life Sciences
Listy Cukrovarnicke a Reparske | Year: 2014

The sugar campaign 2013/2014 was characterized by excellent technological quality of the processed beet. Climatic conditions throughout the growing and treatment seasons are characterized by the WMO as "normal" but the variability of individual months, which is discussed in the article in detail, was considerably different. Czech average sugar content was 17.19% (range 18.07-16.52%). The campaign took 107 days; i.e., it was 4 days shorter than the campaign last year. The amount of sugar from beet was 535.36 kt in white sugar. Regarding the production capacity and daily standard there are big differences - among individual companies and sugar factories - from 14,300 t.d-1 to 2,087 t.d-1 of beet; the total processing capacity in the Czech Republic is 37,372 t.d-1, which is about 5,350 t.d-1 in average. As last year, seven sugra factories were in operation in the Czech Republic. The campaign opened in Moravia (Opava) on 24 September 2013 and closed in Moravia as well (Hrušovany) on 26 January 2014. Intensive and extensive quantities reached predominantly positive values, which prove that within the EU Czech Republic is a producer of high quality sugar beet and high quality sugar. In 2013/2014 investments in Czech sugar factories concentrated mostly on improving the efficiency of technology and improving ecology.


Gebler J.,VUC Prague | Koznarova V.,Czech University of Life Sciences
Listy Cukrovarnicke a Reparske | Year: 2012

Sugar beet campaign 2011/2012 in the Czech Republic was characterized by great quality of sugar beet which was achieved thanks to almost ideal weather conditions not only during the vegetative period of sugar beet but also during the processing campaign. The year 2011 was evaluated as dry (precipitation total was 83 % of long-time average). The average temperature difference on the area of the Czech republic was +0,8 °C which placed this year in the group of the so called "warm years". Total processed amout of sugar beet was 3.576 mil tonnes with the average tuber yield of 71.25 t.ha-1 and polarizing sugar yield of 12.57 t.ha-1. During processing of sugar beet which took 114.1 days, 564,440 tonnes of white sugar were made. As in the last four years, there were seven sugar factories belonging to five different companies. These seven sugar factories had a standard processing capacity of 39,914 t.d-1. Standard processing in one factory reached 15,285 t.d-1. Biosugar production amounted to 7,000 t. The given data prove that the Czech Republic with its 200 year tradition belongs among top sugar beet growers and processors in the EU. Apart from beet for sugar, there was also processed 740,000 t of beet for bioethanol in Tereos TTD company. The article lists the main investments of individual companies before the campaign of 2011.


Gebler J.,VUC Prague | Koznarova V.,Czech University of Life Sciences
Listy Cukrovarnicke a Reparske | Year: 2013

The sugar campaign 2012/2013 was characterized by excellent technological quality of the processed beet and favorable climatic conditions throughout the growing and treatment seasons. A total of 4.293 mil. tons of beet were processed in the campaign with average root yield 66.99 t.ha-1 and polarized sugar yield 11.41 t.ha-1. The weighted average sugar content has surpassed 17.61 % (range 18.07-16.61 %) in the Czech Republic. The campaign took 110.9 days; the amount of sugar from beet was 535.5 kt in white sugar. Seven sugar factories were in operation in the Czech Republic during the past sugar campaign. Regarding the production capacity and daily standard there are big differences - among individual companies and sugar factories - from 14,000 t.d-1 to 2,000 t.d-1 of beet; the total processing capacity in the Czech Republic id 37,212 t.d-1. Intensive and extensive quantities reached predominantly positive values which prove that within the EU Czech Republic is a producer of high quality sugar beet and high quality sugar. In 2012/2013 investments in Czech sugar factories concentrated mostly on improving ecology, technology and increasing efficiency of beet products.


The article refers to sugar industry expositions' tradition, at the occasion of a new museum opening in Dobrovice. The Czech sugarproduction history is well known and goes a long way back - we must not forget that there used to be more than 200 beet sugar factories in the country in the 19th century. The first industrial exhibition on the European continent was held in Prague Klementinum as early as in 1791. Other major exhibitions - national, ethnographic, jubilee etc. (1891, 1895, 1908...) always included large sugar industry displays. The same applied to regional exhibitions. Prof. Pries' "Sugar Industry Collections" of 1896 represented the centrepiece of the Technical University Sugar Industry Museum, later National Technology Museum. The importance of sugar industry is also apparent from the fact that a 1908 sugar factory model (1:10, for a 500 mt/day capacity, Mr. Hoffmeister's design) made together by all industrial equipment manufacturers of that time bears the acquisition number "1" and has been maintained until our time. Three other sugar factory models were described, but their fate is unknown: a) a 1896 model, from the Budapest Millennium Show; b) a 1901 model, from Prof. Preis' research station, designed by Mr. Kašpárek; c) a 1948 model from the town of Kroměříž. Moreover, the Dačice Lump Sugar Museum is reminded of, as the world's first lump sugar was produced there in 1843.


Hotovy Z.,VUC Prague
Listy Cukrovarnicke a Reparske | Year: 2013

During his more than 25-year work in the field of preparation of fillmass and automation, the author of the article encountered a number of superstitions, myths and incorrect opinions regarding preparation of massecuites and work in boilinghouses. His often unbelievable findings including unverified opinions still surviving today are summarized in this article. The readers thus also get a closer look on the historic development of sugar making in the 1970s and 1980s.

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