visbreaking

visbreaking

[′vis‚brāk·iŋ]
(chemical engineering)
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Built by Snamprogetti of Italy and the local Tekfen, this includes units for vacuum distillation, visbreaking, and sulphur recovery.
It describes the origin, occurrence, and properties of naphthenic acids in crude oil; the mechanism of acid corrosion, including types of corrosion, corrosion by acidic species, sulfidic corrosion, and physical effects; corrosion by high acid crude oil and process effects, corrosion of refinery equipment, and the interaction of acids with refinery equipment; effects in refining (process effects, desalting, distillation, visbreaking, coking, catalytic cracking, hydroprocesses, and mitigation); and removing acid constituents from crude oil through physical and chemical methods, as well as corrosion monitoring and prevention.
The firm also will provide technology and Feed services for a crude distillation unit, vacuum distillation unit, and visbreaker in a complex that will utilise the Shell Soaker Visbreaking technology jointly licensed by CB&I and Shell, according to the service company.
During this spring's shutdown, the visbreaking unit was cleaned up to return to the original condition and throughput capacity.
Thermal cracking includes gas oil, visbreaking, fluid coking, delayed coking, and other thermal cracking processes (e.
However, it is a polymorphism character of non-smooth morphologies due to living creature diversity and complexity of nature surroundings, which have divers functions (such as hydrophobicity, anti-adhesion, visbreaking, wear-resistant, noise elimination etc.
Applications and case studies are included, in areas such as fouling mitigation, coking, visbreaking, and hydroconversion.
5] observed that pyrolysis of crude oil in porous media went through three overlapping stages: distillation, visbreaking and coking.
They are polymerized directly in the reactor and still have the narrowest molecular weight distribution even without the need for post-reactor chemical visbreaking.
Conventionally, processes such as coking, visbreaking, vacuum distillation, solvent deasphalting or residual cracking have effected the upgrading of residual feedstocks.
The equipment will be part of the refinery's gudron visbreaking unit.
The basic mechanisms of this process and in particular the competition between visbreaking and cross-linking have been extensively studied on EPM rubbers from Vanadium Catalysts (1), whereas less is known about the cross-linking behavior of EPM rubbers from heterogeneous Ziegler-Natta catalysts, such as those based on titanium tetrachloride supported on activated magnesium chloride (MgC[l.