Unstable Operation in an Acetaldehyde Purification Tower

Abdolahi, Farzad; Vatani, Ali

doi:10.1002/ceat.200402022

Cited by 3 publications

(1 citation statement)

References 6 publications

(2 reference statements)

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“…The efficiency of industrial processes can be seriously reduced by excessive foaming or froth formation [1] . A foam is commonly defined as a dispersed system of many gas bubbles in a liquid or solid matrix [2] .…”

Section: Introductionmentioning

confidence: 99%

New PEG‐Modified Ladder‐Like Silsesquioxane as an Antifoaming Agent

Goodarzi

Karimi

2020

ChemistrySelect

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New ladder‐like silsesquioxane modified with polyethylene glycol as an antifoaming agent based on silicone was synthesized. Silsesquioxane containing polyethylene glycol fragments was successfully fabricated through the reaction of silsesquioxane bearing cyanuric chloride as a linker molecule with polyethylene glycol groups. The structure of the modified silsesquioxane was characterized by middle infrared spectroscopy (MIR), proton nuclear magnetic resonance (1H‐NMR), field emission scanning electron microscopy (FE/SEM), energy‐dispersive X‐ray spectroscopy (EDX), and transmission electron microscopy (TEM). In addition, thermogravimetric analysis (TGA) showed that the new silsesquioxane had excellent thermal stability. This modified structure was used as antifoaming agent for prevention of carryover in boiler systems. Furthermore, the results indicate that the combination of silsesquioxane and polyethylene glycol groups tends to increase the antifoaming properties of the new silicone‐based agent.

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Section: Introductionmentioning

confidence: 99%