Кафедра "Безпека праці та навколишнього середовища"

Постійне посилання колекціїhttps://repository.kpi.kharkov.ua/handle/KhPI-Press/2354

Офіційний сайт кафедри http://web.kpi.kharkov.ua/safetyofliving

Від 2020 року кафедра має назву "Безпека праці та навколишнього середовища", попередня назва – "Охорона праці та навколишнього середовища", первісна назва – кафедра "Охорона праці".

Кафедра "Охорона праці" була створена в 1963 році. Першим її завідувачем був доцент Наумов С. С., який очолював кафедру протягом 1963-1970 років.

За час існування кафедри, крізь її "стіни" пройшло понад 70 тисяч студентів.

Кафедра входить до складу Навчально-наукового інституту механічної інженерії і транспорту Національного технічного університету "Харківський політехнічний інститут".

У складі науково-педагогічного колективу кафедри працюють 25 викладачів, серед яких 2 доктора технічних наук, 17 – кандидатів технічних, біологічних та психологічних наук, 1 – доктор філософії, 3 співробітника мають звання професора, 14 – доцента.

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20173

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Містить файли: ТакORCID: search.filters.orcid.https://orcid.org/0000-0002-1974-0290

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  • Ескіз
    Документ
    A study of the flocculs strength of polydisperse coal suspensions to mechanical influences
    (Scientific Route, 2017) Shkop, Andrii; Tseitlin, Musii; Shestopalov, Oleksii; Raiko, Valentina
    The effect of the concentration and disperse composition on the flocculation strength to mechanical influence is investigated. It is found that the residual rate of floccules sedimentation after the mechanical influence at a constant rate of flocculant has a maximum value at a concentration of solids in the slime in the range of 7–30 g/dm3. The best results are obtained in all the experiments at a solids concentration of 10 g/l. It is found that at a concentration up to 7 g/l and more than 30 g/l, the floccules is formed. They have the lowest residual rate after mechanical influences. With increasing content of the solid fraction of 40–100 microns over 15 %, the strength of floccules increases. They retain their shape and relatively high sedimentation rate even after mechanical influence. The obtained data allow to recommend correction of the slime composition before flocculant injection both the concentration close to the optimum, and the content of size fraction of 40–100 mm more than 15 %.
  • Ескіз
    Документ
    Исследование путей снижения механического воздействия на флокулы в центрифуге
    (Полтавська державна аграрна академія, 2017) Шкоп, Андрей Александрович; Цейтлин, Моисей Абрамович; Шестопалов, Алексей Валерьевич; Райко, Валентина Федоровна
    The ways to reduce the mechanical influence on flocculed aggregates of polydisperse sludge at its dewatering in the centrifuges are studied. It is determined that by changing the design of the feed pipe and the conditions of slurry supply in the centrifuge can be reduced hydromechanical effect on sludge floccules, providing their minimum destruction. It is proposed to install the guide channels along the side surface of the feed pipe so that the direction of slurry flow from the channels coincides with the direction of rotor rotation. Pulp flows along a tangent to the drum surface and only a small part of the flow experiences shear stresses. Installation of booster sleeve with guide pipes, preventing suspension spraying, in the drum allows the slurry to flow down smoothly directly on the surface of the rotor bath depth. It is found that such improvement of centrifuge design increases the efficiency of treatment of flocculed sludge to 99 % and reduces the entrainment of solids with centrate by minimizing destruction of floccules.
  • Ескіз
    Документ
    Study of the strength of flocculated structures of polydispersed coal suspensions
    (Технологічний центр, 2017) Shkop, Andrii; Tseitlin, Musii; Shestopalov, Oleksii; Raiko, Valentina
    The influence of concentration, dispersed composition and degree of thickening of the flocculated slime on the strength of floccules was studied. It was revealed that for the formation of durable aggregates of polydispersed coal slime it is recommended to apply the combination of the non-ionogenic and anionogenic flocculant in the ratio of 20:80 % respectively. It was established that the residual sedimentation rate of floccules after mechanical influence at the constant consumption of the flocculant has the greatest value at the concentration of solid phase in slime of 10–30 g/dm3. With an increase in the content of the portion of solid phase with coarseness of more than 40 µm, the strength of floccules increases to the larger degree than the influence of the initial concentration. This makes it possible to recommend the correction of the slime composition not only by the concentration, but also by the content of medium grade of more than 15–20 %. It was shown that with an increase in the degree of thickening of more than 140–150 g/l the resistance of aggregates to mechanical influence substantially decreases due to an increase in pseudo-plastic properties of flocculated slime.