scholarly journals Prospects of using a liquid ring vacuum pump with automatic adjustable discharge window when grinding grape seeds and pomace

2021 ◽  
pp. 55-60
Author(s):  
Юрий Юрьевич Родионов ◽  
Анастасия Игоревна Скоморохова ◽  
Юрий Викторович Родионов ◽  
Дмитрий Вячеславович Никитин ◽  
Сергей Иванович Данилин ◽  
...  
Keyword(s):  
Vacuum Pump ◽  
Grape Pomace ◽  
Biologically Active ◽  
Specific Power ◽  
Industrial Complex ◽  
Grape Seeds ◽  
Two Stage ◽  
Plant Products ◽  
Plant Powders ◽  
Liquid Ring

Для повышения сохранения биологически активных веществ, уменьшения энергопотребления в процессе измельчения и получения порошка заданной степени помола из виноградных выжимок и семян предлагается использование установки двухступенчатой дисково-шаровой вакуумной мельницы. Предложенная конструкция двухступенчатой мельницы оказывает влияние на безопасность работы (исключаются взрывы) и экологичность (не создает запыленности окружающей среды). В конструкции разработанной установки важным объектом является вакуумный насос. Приведены устройство и основные принципы работы классического одноступенчатого водокольцевого вакуумного насоса производства ОАО «БЕСКОМ» и жидкостно-кольцевого вакуумного насоса с возможностью автоматического регулирования размеров нагнетательного окна, разработанного в ФГБОУ ВО «ТГТУ» на кафедре «МИГ». Показаны основные преимущества предлагаемого насоса по сравнению с классическим вариантом. На основе испытаний был проведен сравнительный анализ разработанного жидкостно-кольцевого вакуумного насоса с автоматическим регулируемым размером нагнетательного окна и классического вакуумного насоса равной быстроты действия, результаты которого продемонстрировали существенную эффективность использования первой машины. Установлено, что затраты удельной мощности в процессе транспортирования растительных порошков на 20-25% ниже при равной быстроте действия. Экономический расчет демонстрирует эффективность применения новой конструкции разработанного вакуумного насоса в технологическом процессе тонкого измельчения сухих растительных продуктов за счет вакуумного отвода заданной фракции помола. Поэтому разработанный насос рекомендуется использовать для измельчения сухих сыпучих растительных продуктов на крупных перерабатывающих предприятиях агропромышленного комплекса, пищевой, фармацевтической и парфюмерной отраслях промышленности. To increase the preservation of biologically active substances, reduce energy consumption in the grinding process and obtain a powder of a given degree of grinding from grape pomace and seeds, it is proposed to use a two-stage disk-ball vacuum mill. The proposed design of a two-stage mill affects the safety of work (excluding explosions) and environmental friendliness (does not create a dusty environment). An important object in the design of the developed installation is the vacuum pump. The device and basic principles of operation of a classic single-stage liquid ring vacuum pump manufactured by JSC "BESCOM" and a liquid ring vacuum pump with the ability to automatically adjust the size of the discharge window, developed at the TSTU Department of MIG are presented. The main advantages of the proposed pump in comparison with the classic version are shown.Based on the tests, a comparative analysis of the developed liquid ring vacuum pump with an automatically adjustable discharge window size and a classical vacuum pump of equal action speed was carried out, the results of which demonstrated the significant efficiency of using the first machine. It has been established that the specific power consumption in the process of transporting plant powders is 20-25% lower with the same speed of action. An economic calculation demonstrates the effectiveness of using a new design of the developed vacuum pump in the technological process of fine grinding of dry plant products due to the vacuum removal of a given grinding fraction. Therefore, the developed pump is recommended to be used for grinding dry bulk plant products at large processing enterprises of the agro-industrial complex, food, pharmaceutical and perfumery industries.

scholarly journals Liquid Ring Vacuum Pumps for Heat and Mass Transfer Processes

2021 ◽  
Vol 27 (3) ◽  
pp. 428-441
Author(s):  
D. V. Nikitin ◽  
Yu. V. Rodionov ◽  
M. A. S. Makhmud ◽  
A. I. Skomorokhova ◽  
A. N. Pakhomov ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Vacuum Pump ◽  
Specific Power ◽  
Two Stage ◽  
Second Stage ◽  
Mass Transfer Processes ◽  
Impulse Drying ◽  
Liquid Ring ◽  
Account Heat

The paper examines the calculation of a liquid ring vacuum pump, using the example of the drying process of various materials. It was found that for two-stage convective vacuum-impulse drying it is economically efficient to use a two-stage liquid ring vacuum pump with the ability to turn off the second stage. A method for calculating the specific power of one-stage and two-stage liquid ring vacuum pumps, taking into account heat and mass transfer and thermal processes that occur during operation is proposed.

scholarly journals Solid Dispersions of Anthelmintics and Plant Protection Preparations

Solids ◽  
2021 ◽  
Vol 2 (1) ◽  
pp. 60-75
Author(s):  
Salavat S. Khalikov
Keyword(s):  
Plant Protection ◽  
Rapid Development ◽  
Solid Dispersions ◽  
Animal Health ◽  
Water Soluble ◽  
Biologically Active ◽  
Cultivated Plants ◽  
Industrial Complex ◽  
Scientific Papers ◽  
Poorly Soluble

Because of the rapid development of nanotechnologies, materials, in particular, solid dispersions (SDs), which are actively introduced into the life of modern man, have been obtained. Special progress in this area is observed in industry and medicine. The use of SDs in agriculture is lagging far behind, despite the growing number of scientific papers on this topic. At the same time, the prospects for the introduction of SDs in the agro-industrial complex are obvious. The review presents the results of research on the development of innovative preparations based on SD to protect plants from diseases and pests of cultivated plants, as well as parasiticides to protect animal health based on modern achievements of nanotechnology. One of these technologies is the methods of mechanochemistry, which improve the properties of poorly soluble biologically active substances by their joint mechanical treatment with water-soluble polymers and auxiliary substances.

Design of Liquid-Ring Vacuum Pump with Adjustable Degree of Internal Compression

2021 ◽  
Author(s):  
Yu. V. Rodionov ◽  
Yu. T. Selivanov ◽  
D. V. Nikitin ◽  
M. A. Mahmood ◽  
N. V. Mikheev
Keyword(s):  
Vacuum Pump ◽  
Liquid Ring

scholarly journals Recovery of Oligomeric Proanthocyanidins and Other Phenolic Compounds with Established Bioactivity from Grape Seed By-Products

Molecules ◽  
2019 ◽  
Vol 24 (4) ◽  
pp. 677 ◽  
Author(s):  
Federica Pasini ◽  
Fabio Chinnici ◽  
Maria Caboni ◽  
Vito Verardo
Keyword(s):  
Phenolic Compounds ◽  
Grape Seed ◽  
Grape Pomace ◽  
Grape Seeds ◽  
Esi Ms ◽  
Oligomeric Proanthocyanidins ◽  
Main Class ◽  
Normal Phase Hplc ◽  
By Products

Grape seeds are a copious part of the grape pomace produced by wine and juice industry and they represent an interesting source of phenolic compounds. Proanthocyanidins (PAs) are the main class of grape seed phenols and are important dietary supplements for their well-known beneficial properties. In this study enriched extracts obtained from Chardonnay and Pignoletto grape seeds were characterized for their proanthocyanidins and other minor phenolic compounds content and composition. Seed PAs were fractionated using Sephadex LH-20, using different ethanol aqueous solutions as mobile phase and analysed by normal phase HPLC-FLD-ESI-MS. Monomers, oligomers up to dodecamers and polymers were recorded in all samples. For both cultivars, the extracts showed a high content in PAs. The determination of other phenolic compounds was carried out using a HPLC-QqQ-ESI-MS and Chardonnay samples reported a greater content compared to Pignoletto samples. Contrary to PAs fraction, extracts obtained with ethanol/water 50/50 (v/v) presented a significant higher phenolic content than the others.

Grape Seeds Dehydration under Forced Convection Conditions

2009 ◽  
Vol 283-286 ◽  
pp. 610-615
Author(s):  
G. Clemente ◽  
N. Sanjuán ◽  
J. Bon ◽  
R. Peña ◽  
J.V. García-Pérez
Keyword(s):  
Effective Diffusivity ◽  
Internal Resistance ◽  
Drying Kinetics ◽  
Grape Pomace ◽  
Wine Industry ◽  
Added Value ◽  
Grape Seeds ◽  
External Resistance ◽  
Experimental Conditions ◽  
Grape Skin

Grape pomace is the main by-product from the wine industry. It is principally made up of grape skin and seeds. Drying this by-product is the first step for the later extraction of components with high added value like oil or antioxidants. Due to the different characteristics of the components, the study of the drying kinetics of grape pomace must be addressed taking its components into account one by one. For that purpose, grape seeds from the Spanish wine industry were dehydrated in a convective laboratory dryer at 70 °C and at 1, 2 and 3 m/s until a weight loss of 40% was reached. Drying kinetics was determined in triplicate. Modelling was carried out by means of a diffusion model without considering shrinkage and external resistance. Grape seeds were assumed to be spherical. For all the fits, the explained variance was higher than 96.9 % and the mean relative modulus was lower than 1.7 %. Between 1 and 2 m/s, effective diffusivity increased in line with air velocity, although the values of effective diffusivity calculated for 2 and 3 m/s were similar. It seems to indicate that for the experimental conditions under study, the external resistance is not negligible at 1 and 2 m/s and for higher air velocities the internal resistance to mass transfer controls the drying process. These results coincide with those found by other authors when studying different food products.

Sign in / Sign up

Export Citation Format

Share Document