BazTech - Yadda

1

The effect of solids on interfacial rheology and the performance of coalescence filters

Krasiński Andrzej, Sołtan Łukasz, Kozyrski Jakub

Chemical and Process Engineering

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2021

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Vol. 42, nr 4

337-–348

EN

The paper presents a research work on the process of emulsion separation by filtration-coalescence method in the presence of solid particles. A polyester PBT coalescence medium was used in experiments of water removal from diesel fuel. Apart from parameters representing the geometry and inherent properties of coalescence filters, the additional emulsion constituents such as surfactants and solid particles also affect the process. These constituent can cover fibres and they can also influence emulsion properties. It has been experimentally confirmed that contrary to surface active compounds, which stabilise the emulsion, the presence of specific solid particles decreased the system stability. If surface active compounds are present in the system, the influence of solid particles is different at the same concentration level depending on their type. The destabilization of emulsion due to the presence of Arizona dust was more pronounced. Although the presence of particles mitigated the effect of surfactants, their deposition in the filter media oppositely affected the coalescence process depending on solid type. Oleophilic iron oxide particles improved the separation efficiency of water from diesel fuel, while Arizona test dust had a negative impact on the separation process performance.

2

Badania usuwania zanieczyszczeń olejowych z wody po procesie szczelinowania

Krasiński A., Wierzba P.

Inżynieria i Aparatura Chemiczna

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2016

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Nr 2

58--59

PL

Przeprowadzono badania usuwania oleju z wody. Zweryfikowano działanie dwóch komercyjnie oferowanych deemulgatorów, zmieniając ich stężenie oraz czas. W instalacji pilotażowej pracę separatora koalescencyjnego wspomagano dodatkiem wybranego deemulgatora w dawce określonej w badaniach laboratoryjnych. Uzyskano redukcję stężenia zemulgowanego oleju poniżej 10 mg/dm3, pozwalającego na bezproblemową pracę modułów membranowych w zasadniczej części instalacji oczyszczania wody po szczelinowaniu.

EN

In this work the oil removal from water was studied. The effect of concentration and time was investigated for two commercial deemulsifiers. Then, selected product was used to improve the separation performance of coalescence separator in the pilot-scale rig. The oil concentration below 10 mg/dm3 was obtained, which enables a reliable long-time operation of membranes located downstream the coalescer in the cleaning system of water used for hydraulic fracturing.

3

Charakterystyka i separacja emulsji olejowo-wodnych

Mielczarski S.

Inżynieria Chemiczna i Procesowa

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2001

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T. 22, z. 3D

941--946

PL

Badano właściwości i separację emulsji „olej napędowy w wodzie”, powstających w mieszalniku. Struktury emulsji obserwowano metodami spektrofotometrii i fotografii mikroskopowej. Proces odolejania wody prowadzono w aparacie kolumnowym z nieruchomą olejową warstwą chłonną.

EN

Properties and separation of the diesel oil / water emulsion created in a vessel have been investigated. The emulsion structures were observed by means of spectroscopic and microscope photography methods. The water deoiling process has been carried out applicating column apparatus with oil absorption layer.