scholarly journals THE CHOICE OF FACTORS OF INFLUENCE ON VIBRO-CENTRIC SEPARATION OF LIQUID INHOMOGENEOUS RAW MATERSALS

Author(s):  
Yurii Polievoda ◽  
Alla Solomon

The development of modern equipment and technology leads to healthy competition, which in turn allows you to freely choose a machine or installation for the separation of liquid inhomogeneous systems. Each production when choosing equipment takes into account the relevant factors and its specifics. Mathematical and statistical planning of a multifactorial experiment was used to refine the glycerin quality indicators and determine their weight. The article constructs the response surfaces of the optimization criteria, which allow us to clearly illustrate the dependences of the values of the mass fraction of pure glycerin and energy consumption on individual optimization parameters. The research method includes the selection of optimal modes of operation of the vibrocentric machine for purification of liquid glycerol-containing raw materials according to technical and economic criteria for evaluation and determination of quality indicators of purified glycerol with variation of processing time, process temperature, etc. During the study, special attention was paid to the main operating parameters of this vibrating machine, namely: amplitude-frequency, power and energy. The efficiency of the process of vibration-based purification of crude glycerol was evaluated on such parameters as vibration control, angular rate of flow, rate of temperature. The recommendations of the second basic parameters of the lateral period were determined in accordance with the second set of the second order. Analyzing the results of studies of vibration-centrifugal separation of liquid inhomogeneous raw materials, it can be argued that the most influential factors in the separation of these products are the rotor speed, vibration shaft speed, oscillation amplitude, power, temperature and processing time.

2020 ◽  
Vol 175 ◽  
pp. 05006
Author(s):  
Galina Prokopetz ◽  
Anna Azarova ◽  
Anatoliy Prokopetz ◽  
Elena Murugova

This paper deals with the general structure of the technological system of vibration abrasive processing and main issues of ensuring the stability of quality indicators formed in the final vibration abrasive processing. The research results of the working chamber oscillation amplitude influence and processing time on the wear rate of the processing environment are presented. The sample of determining the wear tolerance of the processing environment based on the roughness tolerance is presented.


Author(s):  
G.A. Prokopets ◽  
◽  
A.A. Prokopets ◽  
T. Erina ◽  
◽  
...  

The paper considers the General structure of the technological system of vibration abrasive processing, the issues of ensuring the stability of quality indicators formed during the final vibration abrasive processing. The results of the study of the influence of the working chamber oscillation amplitude and processing time on the wear rate of the processing medium are presented. An example of determining the wear tolerance of the processing medium based on the roughness tolerance is given.


Author(s):  
Е.Е. Ульянченко

Исследовано влияние приема прорезания средней жилки на основные качественные показатели табачного сырья. Исследования проводили на листьях основных сортотипов табака Трапезонд и Остролист по массовым ломкам. Прорезание жилки осуществляли на инновационном оборудовании экспериментальном образце линии подготовки листьев табака к сушке ЛПТС360 (ВНИИТТИ, Краснодар). Качество табачного сырья с прорезанной жилкой определяли по товарным сортам, технологическим и курительным свойствам, химическому составу по методикам лабораторного контроля ВНИИТТИ. Инновационный способ подготовки табака к сушке в едином потоке с применением технологического оборудования, включающего прорезатель, выявил положительный технологический результат. Установлена эффективность приема прорезания средней жилки: срок естественной сушки листьев с прорезанной жилкой сократился в 2,5 раза выход 1го товарного сорта сырья составил 74,60 87,93 выход волокна сырья с прорезанной жилкой превышает минимальное значение технологических норм (75) в 1,15 1,26 раз условный расход сырья на единицу курительных изделий меньше норматива на 6 25 улучшен основной показатель химического состава табачного сырья (число Шмука) в 1,6 4,6 раза у сортотипа Трапезонд, в 1,2 1,5 раза у сортотипа Остролист дегустационные свойства сырья не ухудшились. Инновационный способ подготовки листьев табака к сушке, включающий прием прорезания средней жилки, рекомендуется для применения в производстве табачного сырья. The influence of middle vein cutting method on the main quality indicators of tobacco raw materials is studied. Studies were carried out on the leaves of the main varieties of tobacco Trapezond and Ostrolist, on mass breakdowns. Vein cutting was carried out on the innovative equipment of the line of preparation of tobacco leaves for drying LPTS360 (GNU VNIITTI RAA, Krasnodar). The quality of tobacco raw materials with a cut vein was determined by commercial grades, technological and Smoking properties, chemical composition in accordance with the methods VNIITTI. An innovative method of preparing tobacco for drying in a single stream with the use of technological equipment, including a cutter, revealed a positive technological result. The period of natural drying of leaves with cut veins decreased by 2,5 times. The yield of the 1st commercial grade of raw materials was 74,60 87,93. The output of the fiber raw material with cut vein exceeds the minimum value of technological norms (75) in 1,15 1,26 times. Conditional consumption of raw materials per unit of Smoking products is less than the norm by 6 25. The method of cutting the middle vein of the leaves improves the main indicator in the chemical composition of tobacco raw materials (Schmuck ratio) 1,6 4,6 times in the variety Trapezond and 1,2 1,5 times in the variety Ostrolist. The tasting properties of raw materials have not deteriorated. Analysis of raw material quality indicators showed that the innovative method of cutting the middle vein is effective and recommended for use in the production of tobacco raw materials.


2021 ◽  
Vol 17 (1) ◽  
pp. 70-77
Author(s):  
E. Е. Ulyanchenko ◽  
N. N. Vinevskaya

Cultivation and use of Virginia 202 broadleaf skeletal variety for the production of smoking tobacco has broad prospects. Problems of post-harvest processing of large leaves with a massive midrib consist in high energy costs with an artificial drying method or the provision of facilities for long-term natural drying. The aim of the research is to apply physical method of cutting the leaf midrib to intensify drying and to determine the effect of this technique on the quality indicators of raw materials. It has been found that the technique of cutting the midrib on the Virginia 202 variety contributes to a significant optimization of the drying process without reducing the quality of raw materials. The drying time of leaves with the combined method is reduced by 2,8 times, with the natural method – by 2,3 times, and the quality indicators of raw materials improve. Commercial quality is characterized by the yield of 1 commercial grade, for combined drying the yield of 1 grade has increased in comparison with the control sample by 27% and amounted to 86,5%, with natural drying – the increase in yield is 4%. Cutting the midrib increases the fiber yield by 3–5% and contributes to an increase in the volumetric-elastic properties of the fiber, providing an economical consumption of raw materials for the production of smoking articles, the consumption is 676,8–753,8 g/1000 pcs. The gustatory quality improves, raw materials with a cut midrib have optimal values of the ratio of carbohydrate-protein balance in the range of 1,08–1,5, the strength is preserved due to the lower consumption of nicotine during the shorter drying period, in comparison with drying the leaf without cutting the midrib. Cutting the midrib in Virginia 202 is cost effective.


2021 ◽  
Vol 296 ◽  
pp. 07009
Author(s):  
Svetlana Gabelko ◽  
Olesya Ionova

When developing a diet for citizens with diseases of the gastrointestinal tract or obesity, it is necessary to adhere to a therapeutic diet in which bakery products and dairy products with berry fillers can be wholesome ingredients. In order to increase the range of berry fillers based on local plant raw materials, the physicochemical quality indicators were studied and the organoleptic evaluation of fillers with various types of thickeners was given.


Author(s):  
Ю.Н. НИКОНОВИЧ ◽  
Н.А. ТАРАСЕНКО

Исследовано влияние гидратированных пшеничных волокон Камецель FW 200 и апельсиновых волокон Citri-Fi 200, внесенных в тесто взамен части кондитерского жира для повышения пищевой и биологической ценности продукта, на свойства мягких вафель. Готовили образцы вафельного теста: контрольный – тесто без добавок, образцы теста с заменой 10, 15 и 20% кондитерского жира на пшеничные волокна Камецель FW 200, образцы теста с заменой 10, 15 и 20% кондитерского жира на апельсиновые волокна Citri-Fi 200 – и определяли технологические свойства изготовленных образцов теста – влажность, плотность и количество оттеков вафельного листа. Установлено, что внесение пищевых волокон Citri-Fi 200 в исследованных дозировках 10, 15 и 20% от массы жира в рецептуру вафельного теста увеличивает количество оттеков выше допустимого уровня, т. е. увеличивает потери сырья. Оптимальные качественные показатели имеет образец вафельного теста с добавкой 15% гидратированных пищевых волокон Камецель FW 200, внесение которых позволит увеличить пищевую ценность кондитерского изделия. The influence of hydrated wheat fibers Kametsel FW 200 and orange fibers Citri-Fi 200, introduced into the dough instead of the confectionery fat to improve the nutritional and biological value of the product on the properties of soft waffles was investigated. Wafer dough samples: control - dough without additives, dough samples with replacement of 10, 15 and 20% confectionery fat by wheat fibers Kametsel FW 200, dough samples with replacement of 10, 15 and 20% confectionery fat by orange fibers Citri-Fi 200 – prepared and determined their technological properties – humidity, density and the number of flows of the wafer sheet. It is established that the introduction of Citri-Fi 200 dietary fibers in the studied dosages of 10, 15 and 20% by weight of fat in the formulation of wafer dough increases the number of flows the dough above the permissible level, i.e. increases the loss of raw materials. A sample of wafer dough with the addition of 15% hydrated dietary fiber Kametsel FW 200 has optimal quality indicators.


2020 ◽  
pp. 36-48
Author(s):  
V.A. Kochetkova

The article provides an overview of the production of binders, sets out the requirements for the quality indicators of colored asphalt, the technology of production of binders, and also considers promising areas in the production of colorless binders. The purpose of the work was to create an affordable organic binder based on light hydrogenated petroleum polymer resins and use the developed binder for colored asphalt. To achieve this goal, we analyzed patents for the production of binders, on the basis of which the composition of raw materials was selected, and studied the physical and mechanical characteristics of the obtained samples on both hydrogenated and non-hydrogenated petroleum polymer resin.


Author(s):  
Е.Е. УЛЬЯНЧЕНКО

При производстве табачного сырья важную роль играет сокращение продолжительности сушки табачных листьев. Одним из способов интенсификации сушки свежеубранных табачных листьев является прием прорезания средней жилки (ПСЖ) листьев вдоль волокон. По результатам исследований 2019–2020 гг. была создана база данных табачного сырья, полученного при естественном способе сушки с применением приема ПСЖ, которая может служить информационным материалом для производителей табака. Проведена оптимизация процесса сушки табачного листа ПСЖ по показателям качества табачного сырья для расширенного диапазона сортотипов табака. Объектом исследований были сорта отечественной селекции, включенные в Государственный реестр селекционных достижений, допущенные к использованию: Самсун 85, Вирджиния 202, Юбилейный новый 142, Трапезонд 92, Трапезонд 204, Дюбек 33, Американ 287 и Крупнолистный Ильский (находится в стадии государственных испытаний). Критерием оценки эффективности применения приема ПСЖ на исследованных сортах табака являлся совокупный сравнительный анализ следующих показателей контрольных (без ПСЖ листа) и опытных образцов: уровень интенсификации сушки, показатели товарного качества, технологических свойств и химического состава полученного сырья. Установлено, что ПСЖ позволяет интенсифицировать процесс сушки в 1,3–2,46 раза в зависимости от сорта табака и положительно влияет на технологические свойства сырья, у большинства сортов увеличивается выход волокна и сохраняются объемно-упругие свойства. Динамика сушки оказывает влияние на изменение химического состава сырья. В процессе сушки за счет гидролизации солей никотина и его освобождения путем окисления кислородом воздуха уровень никотина в ряде образцов снижается в пределах 10–30%. Чем выше содержание никотина, тем выше крепость табака, грубее его вкус. Изменения углеводно-белкового соотношения в сторону повышения углеводов улучшают вкусовые характеристики сырья. По каждому исследованному сорту не удалось выявить закономерной зависимости его структуры и характера процесса сушки при ПСЖ с преобразованиями химического состава сырья. На основе анализа технологических и качественных показателей табачного сырья, представленных в разработанной базе данных по интенсификации сушки различных сортов табака с применением приема ПСЖ табачных листьев, можно планировать выбор оптимального способа сушки для каждого сорта табака, позволяющего повысить эффективность использования сырья и улучшить его качественные характеристики. In the production of tobacco raw materials, reducing the drying time of tobacco leaves plays an important role. One of the ways to intensify the drying of freshly harvested tobacco leaves is the method of cutting the middle vein (CMV) of the leaves along the fibers. Based on the results of research in 2019–2020, a database of tobacco raw materials obtained by a natural drying method using CMV reception was created, which can serve as information material for tobacco producers. The optimization of the process of drying the CMV tobacco leaf according to the quality indicators of tobacco raw materials for an expanded range of tobacco variety types was carried out. The object of research was the varieties of domestic selection included in the State Register of Breeding Achievements, approved for use: Samsun 85, Virginia 202, Yubileyny novy 142, Trapezond 92, Trapezond 204, Dubek 33, American 287 and Krupnolistnyy Ilskiy (under state testing). The criterion for evaluating the effectiveness of the use of CMV intake on the studied tobacco varieties was a cumulative comparative analysis of the following indicators of control (without CMV sheet) and experimental samples: the level of drying intensification, indicators of commercial quality, technological properties and chemical composition of the obtained raw materials. It is established that CMV allows to intensify the drying process by 1,3–2,46 times, depending on the tobacco variety and has a positive effect on the technological properties of raw materials, most varieties increase the yield of fiber and retain volume-elastic properties. The dynamics of drying affects the change in the chemical composition of raw materials. During the drying process, due to the hydrolysis of nicotine salts and its release by oxidation with air oxygen, the nicotine level in a number of samples decreases within 10–30%. The higher the nicotine content, the higher the strength of tobacco, it is coarser in taste. Changes in the carbohydrate-protein ratio in the direction of increasing carbohydrates improve the taste characteristics of raw materials. For each studied variety, it was not possible to identify a regular dependence of its structure and the nature of the drying process at CMV with transformations of the chemical composition of raw materials. Based on the analysis of technological and qualitative indicators of tobacco raw materials presented in the developed database on the intensification of drying of various varieties of tobacco using the use of CMV of tobacco leaves, it is possible to plan the choice of the optimal drying method for each variety of tobacco, which allows to increase the efficiency of using raw materials and improve its quality characteristics.


2011 ◽  
Vol 15 (2) ◽  
pp. 281-292 ◽  
Author(s):  
Nikola Budimir ◽  
Marko Jaric ◽  
Branislav Jacimovic ◽  
Srbislav Genic ◽  
Nikola Jacimovic

This paper deals with the impact of the most important factors of the total production costs in bioethanol production. The most influential factors are: total investment costs, price of raw materials (price of biomass, enzymes, yeast), and energy costs. Taking into account these factors, a procedure for estimation total production costs was establish. In order to gain insight into the relationship of production and selling price of bioethanol, price of bioethanol for some countries of the European Union and the United States are given.


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