scholarly journals Оптимизация технологии получения молодых коньячных дистиллятов с использованием математического моделирования

2019 ◽  
pp. 162-167
Author(s):  
Aleksandr Vasylyk ◽  
Anatoly Yalanetskiy

Приведены основные схемы получения молодых коньячных дистиллятов на аппаратах периодического действия двойной сгонки (шарантского типа), традиционно применяемые в отечественном коньячном производстве и у классических французских производителей. При помощи математического моделирования проведен анализ и определен выход коньячного дистиллята с заданными кондициями и удельные энергетические затраты при одинаковых начальных условиях, но при различных вариантах перегонки. Произведен расчет кондиций основных получаемых продуктов и промежуточных фракций за один цикл дистилляции, а также за длительную последовательность циклов для учета влияния возвращаемых головных и хвостовых фракций, на процесс последующих перегонок. Установлено, что схемы получения коньячных дистиллятов, традиционно используемые в странах СНГ, и метод дистилляции MARTELL, являются менее эффективными с точки зрения выхода коньячного дистиллята и удельных энергозатрат, чем метод дистилляции коньячных домов REMY MARTIN и HENNESSY. Установлено, что регулирование объемной доли этилового спирта в спирте-сырце коньячном за счет отбора хвостовой фракции при первой перегонке является эффективным способом управления процессом дистилляции, который оказывает влияние на общий выход кондиционного коньячного дистиллята и удельные энергетические затраты. Максимальный выход коньячного дистиллята и минимальные удельные энергозатраты при перегонке виноматериала с объемной долей этилового спирта 10,5 % и получением коньячного дистиллята с объемной долей этилового спирта 70% достигаются в случае начала отбора хвостовой фракции при объемной доле этилового спирта в парах (спиртовом фонаре) в диапазоне 14-16%. Показано, что применяемые различными производителями схемы получения коньячных спиртов имеют потенциал для оптимизации, позволяющий увеличить выход коньячного спирта до 2,4 % и снизить удельные энергозатраты до 5 %. Оптимизация схемы получения коньячных дистиллятов не требует дополнительных капиталовложений и может служить дополнительным источником прибыли без какой-либо модернизации оборудования.The paper describes basic schemes for producing young brandy distillates on double distillation batch machines (charente type) traditionally used in domestic brandy production and by traditional French producers. Mathematical modelling was used to analyze and determine the output of brandy distillate with predetermined parameters and specific energy costs under the same initial conditions, but with different distillation options. We calculated quality parameters of the main resultant products and intermediate fractions during one distillation cycle, as well as during the long cycle sequence to estimate the effect of returned fraction heads and tails on the subsequent distillation process. The analysis established that brandy distillate production schemes traditionally used in the CIS countries and the MARTELL distillation method are less effective in terms of brandy distillate output and specific energy consumption as compared to the REMY MARTIN and HENNESSY cognac distillation method. It was established that control of the volume fraction of ethyl alcohol in the raw brandy alcohol by tail fraction takeoff during the first distillation is an effective way to control the distillation process, which affects the overall output of conditioned brandy distillate and specific energy costs. The maximum brandy distillate output and the minimum specific energy consumption during base wine distillation with volume fraction of ethyl alcohol at 10.5 % and brandy distillate production with volume fraction of ethyl alcohol at 70 % is achieved when the tail fraction takeoff begins with ethyl alcohol volume fraction in pairs (alcohol lamp) within the range of 14-16 %. It is demonstrated that production schemes used by various producers to obtain brandy spirits can be optimized, which would increase the output of brandy spirits by 2.4 % and reduce the specific energy costs by 5 %. Optimization of the cognac distillates production scheme does not require additional investment, and can serve as an additional profit source without any equipment upgrade.

2021 ◽  
Vol 51 (2) ◽  
pp. 395-401
Author(s):  
Vladimir Kharitonov ◽  
Vladimir Asafov ◽  
Pavel Kuznetsov ◽  
Valentina Gabrielova

Introduction. One of the promising methods in the production of dairy and other food in concentrated, condensed and dry forms is a consistent combination of dehydration methods. The subject of this research relevant now is approaches to the calculation of such processes. The work objective is to analyze the dehydration staging effect on the energy consumption in this process. Study objects and methods. Liquid, concentrated and powdered dairy products: whole and skim milk, milk whey, whole milk substitutes, as well as their dehydration parameters at certain stages. The determination of moisture and solids mass fraction in products was carried out with a standard method. Results and discussion. The feasibility of using a multi-stage dehydration method for the production of various types of powder milk products has been justified. The characteristic boundaries of solids mass fraction at different stages of the process were determined. The material-balance equation made it possible to define the formula for the total specific energy consumption relative to the unit of the final dry product at an arbitrary number of dehydration stages. The paper contains examples of a comparative efficiency assessment of the dehydration process carried out at different stages from the point of view of energy costs of its implementation. Conclusion. The research featured various issues related to the use of dehydration methods in the production of milk powder products. An equation has been drawn up to estimate the specific energy consumption of the multi-stage dehydration process relative to a unit of the final dry product. The use of a multi-stage process allows to effectively reduce the specific energy consumption, as well as to generate new high quality products.


Author(s):  
M. A. Promtov ◽  
S. E. Kutukov ◽  
A. N. Koliukh ◽  
F. S. Zverev

The regularities of changes in energy consumption to reduce the viscosity of highly paraffinic oil during processing in an installation based on a rotary impulse apparatus (RIA) are experimentally investigated. The decrease in oil viscosity during processing in RIA exceeds 40%. An increase in the amount of oil supply to the RIA makes it possible to reduce the specific energy consumption for its processing at the same relative value of the decrease in viscosity. Specific energy consumption decreases with an increase in oil consumption through the RIA according to the dependence close to the logarithmetic one.


The article presents the results of driving and static tests of pile models with different longitudinal shapes, carried out in laboratory conditions. It was revealed that the specific energy consumption of driving a pyramidal-prismatic pile can either exceed or be less than the specific energy consumption of driving a prismatic pile. Unlike pyramidal piles, pyramidal-prismatic piles have less specific energy consumption for driving. Energy costs for driving pyramidal-prismatic piles, as well as their resistance to pressing vertical loads depend on the length of the pyramidal section and rise with its increase. It has been established that, with the same depth of driving and with the same piles, the specific bearing capacity of the pyramidal-prismatic piles is higher than the prismatic piles and less than the pyramidal pile. The revealed features of the behavior of the pyramidalprismatic piles are due to the influence of the longitudinal shape and the length of the pyramidal part of their shaft on the driving process and behavior under the loads.


1970 ◽  
Vol 26 (1) ◽  
pp. 16 ◽  
Author(s):  
S Balasubramanian ◽  
Rajkumar Rajkumar ◽  
K K Singh

Experiment to identify ambient grinding conditions and energy consumed was conducted for fenugreek. Fenugreek seeds at three moisture content (5.1%, 11.5% and 17.3%, d.b.) were ground using a micro pulverizer hammer mill with different grinding screen openings (0.5, 1.0 and 1.5 mm) and feed rate (8, 16 and 24 kg h-1) at 3000 rpm. Physical properties of fenugreek seeds were also determined. Specific energy consumptions were found to decrease from 204.67 to 23.09 kJ kg-1 for increasing levels of feed rate and grinder screen openings. On the other hand specific energy consumption increased with increasing moisture content. The highest specific energy consumption was recorded for 17.3% moisture content and 8 kg h-1 feed rate with 0.5 mm screen opening. Average particle size decreased from 1.06 to 0.39 mm with increase of moisture content and grinder screen opening. It has been observed that the average particle size was minimum at 0.5 mm screen opening and 8 kg h-1 feed rate at lower moisture content. Bond’s work index and Kick’s constant were found to increase from 8.97 to 950.92 kWh kg-1 and 0.932 to 78.851 kWh kg-1 with the increase of moisture content, feed rate and grinder screen opening, respectively. Size reduction ratio and grinding effectiveness of fenugreek seed were found to decrease from 4.11 to 1.61 and 0.0118 to 0.0018 with the increase of moisture content, feed rate and grinder screen opening, respectively. The loose and compact bulk densities varied from 219.2 to 719.4 kg m-3 and 137.3 to 736.2 kg m-3, respectively.  


2021 ◽  
Vol 13 (10) ◽  
pp. 5617
Author(s):  
Raman Kumar ◽  
Sehijpal Singh ◽  
Ardamanbir Singh Sidhu ◽  
Catalin I. Pruncu

This paper’s persistence is to make an inclusive analysis of 268 documents about specific energy consumption (SEC) in machining operations from 2001 to 2020 in the Scopus database. A systematic approach collects information on SEC documents’ primary data; their types, publications, citations, and predictions are presented. The VOSviewer 1.1.16 and Biblioshiny 2.0 software are used for visualization analysis to show the progress standing of SEC publications. The selection criteria of documents are set for citation analysis. The ranks are assigned to the most prolific and dominant authors, sources, articles, countries, and organizations based on the total citations, number of documents, average total citation, and total link strength. The author-keywords, index-keywords, and text data content analysis has been conducted to find the hotspots and progress trend in SEC in machining operations. The most prolific and dominant article, source, author, organization, and country are Anderson et al. “Laser-assisted machining of Inconel 718 with an economic analysis”, the Int J Mach Tools Manuf, Shin Y.C., form Purdue University Singapore, and United States, respectively, based on total citations as per defined criteria. The author keywords “specific cutting energy” and “surface roughness” dominate the machining operations SEC. SEC’s implication in machining operations review and bibliometric analysis is to deliver an inclusive perception for the scholars working in this field. It is the primary paper that utilizes bibliometric research to analyze the SEC in machining operations publications expansively. It is valuable for scholars to grasp the hotspots in this field in time and help the researchers in the SEC exploration arena rapidly comprehend the expansion status and trend.


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