Study of Live Oil Wax Precipitation with High-Pressure Micro-Differential Scanning Calorimetry†

2011 ◽  
Vol 25 (2) ◽  
pp. 568-572 ◽  
Author(s):  
Priyanka Juyal ◽  
Tran Cao ◽  
Andrew Yen ◽  
Rama Venkatesan
Keyword(s):  
Differential Scanning Calorimetry ◽  
High Pressure ◽  
Scanning Calorimetry ◽  
Wax Precipitation ◽  
Live Oil

The Impact of the Composition of the Crude Oils on the Wax Crystallization

2014 ◽  
Vol 625 ◽  
pp. 196-200 ◽  
Author(s):  
Arya Hosseinipour ◽  
Khalik M. Sabil ◽  
Andhy Arya Ekaputra ◽  
Azuraien B. Japper ◽  
Lukman B. Ismail
Keyword(s):  
Differential Scanning Calorimetry ◽  
High Pressure ◽  
Crude Oil ◽  
Crude Oils ◽  
Solubility Curve ◽  
Scanning Calorimetry ◽  
Wax Precipitation ◽  
Wax Appearance Temperature ◽  
Wax Crystallization ◽  
The Impact

One of the major problems in petroleum industry is wax precipitation and deposition. The component’s compositional and structural analysis of the crude oils is key factors to be studied to mitigate wax formation and precipitation tendency for the betterment of the crude oil flowability. In this work, the compositions and structures of two Malaysian and Sudanese crude oil samples were determined to investigate their effects on wax precipitation. The GC/MS was used to analyze hydrocarbon components. For this work, high pressure micro differential scanning calorimetry (HPμDSC) is used to determine the wax crystallization point and solubility curve. Results showed a linear relationship between wax appearance temperature (WAT) and weight percentage of component in the crude oil having > 14 carbon atoms. In addition, the effect of temperature on the amount of wax precipitation has also been investigated. Keywords: N-paraffin, Wax appearance temperature, Wax precipitation, High pressure micro differential scanning calorimetry

scholarly journals Polymorphism of 1,3-X-adamantanes (X = Br, OH, CH3) and the crystal plastic phase formation ability

CrystEngComm ◽  
2020 ◽  
Vol 22 (7) ◽  
pp. 1230-1238 ◽  
Author(s):  
Philippe Negrier ◽  
Bacem Ben Hassine ◽  
Maria Barrio ◽  
Michela Romanini ◽  
Denise Mondieig ◽  
...  
Keyword(s):  
Differential Scanning Calorimetry ◽  
High Pressure ◽  
Phase Formation ◽  
Powder Diffraction ◽  
Scanning Calorimetry ◽  
Density Measurements ◽  
X Ray ◽  
Plastic Phase

The polymorphism of 1,3-dimethyladamantane (13DMA), 1,3-adamantanediol (13DOHA) and 1,3-dibromoadamantane (13DBrA) has been studied by X-ray powder diffraction, density measurements and differential scanning calorimetry at normal and high-pressure.

The Thermal Processes within Polyethylene in Mixtures with a High Content of Inorganic Components after Plastic Deformation under High Pressure

2018 ◽  
Vol 45 (3) ◽  
pp. 79-86 ◽  
Author(s):  
V.A. Zhorin ◽  
M.R. Kiselev
Keyword(s):  
Differential Scanning Calorimetry ◽  
Plastic Deformation ◽  
High Pressure ◽  
Thermal Effects ◽  
Germanium Dioxide ◽  
Thermal Processes ◽  
Scanning Calorimetry ◽  
Interphase Interaction ◽  
Enthalpy Of Melting ◽  
Inorganic Components

Mixtures of polyethylene and 80% germanium dioxide, magnesium, magnesium oxide, and sodium chloride were subjected to plastic deformation under a pressure of 0.5–4.0 GPa, and were then investigated by differential scanning calorimetry. The enthalpy of melting of the polymer in certain mixtures reached 300 J/g. On thermograms of deformed mixtures, exothermic processes were observed. The observed thermal effects are possibly due to interphase interaction at the phase boundary.

Wax precipitation from North Sea crude oils. 3. Precipitation and dissolution of wax studied by differential scanning calorimetry

1991 ◽  
Vol 5 (6) ◽  
pp. 914-923 ◽  
Author(s):  
Asger Baltzer Hansen ◽  
Elfinn Larsen ◽  
Walther Batsberg Pedersen ◽  
Anne B. Nielsen ◽  
Hans Petter Roenningsen
Keyword(s):  
Differential Scanning Calorimetry ◽  
North Sea ◽  
Crude Oils ◽  
Scanning Calorimetry ◽  
Wax Precipitation
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