Solvent deasphalting of Saudi residue to produce 30# hard ...

30 # asphalts produced directly by de-oiled asphalt (DOA) showed poor ductility at low temperature and deasphalted oil (DAO) yield was below 17.6%. Combination technology of solvent deasphalting and blending was investigated to produce 30 # asphalt and results demonstrated that the 30 # blended asphalt with Saudi residue and DOA prepared under conditions of temperature of 105°C, pressure of …

Deasphalting | FSC 432: Petroleum Refining

Deasphalting. While distillation achieves separation/fractionation of the feed components with respect to differences in their boiling point, deasphalting (as a solvent extraction process) fractionates the feedstock, atmospheric, or more often vacuum distillation residue (VDR), with respect to solubility/insolubility of molecular components in a given solvent.

Solvent deasphalting effects on whole Cold Lake bitumen ...

@article{osti_215062, title = {Solvent deasphalting effects on whole Cold Lake bitumen}, author = {Brons, G and Yu, J M}, abstractNote = {Solvent separation of bitumen from the Cold Lake region of Alberta, Canada, into deasphalted oils and asphaltenes has been studied using propane, i-butane, n-butane and n-pentane. The resulting range of deasphalting was from 20 to 50 wt.% of the …

Solvent Deasphalting - Chevron Lummus

The CLG Residue Solvent Refining Solvent Deasphalting (RSR) process is a specialized solvent extraction process that separates by molecular type instead of by boiling point, as in the vacuum distillation process. RSR recovers a low-contaminant, relatively high in hydrogen content, deasphalted oil product (DAO) from the residue.

New insights into the effects of styrene-butadiene-styrene ...

This paper deals with the poorly understood effects of styrene-butadiene-styrene (SBS) copolymer on the bitumen performance. It focuses on determining the impact of various concentrations (e.g., 0, 4, 8, and 12 wt. %) of SBS on the attributes of two types of asphalt namely AP-5 asphalt and solvent deasphalting (SDA) pitch.

Asphalt coking method (Patent) | OSTI.GOV

It comprises: demetallizing the feed by deasphalting the feed in a solvent deasphalting means operating at solvent deasphalting conditions including a solvent: feed volume ratio of about 1:1 to 4:1, using a solvent selected from the group of C{sub 4} to 400{degrees}F. hydrocarbons and mixtures thereof; recovering from the solvent rich fraction ...

Lesson 5 Overview | FSC 432: Petroleum Refining

One important solvent technique is deasphalting, which is done to remove asphalt, the stuff that you put on the road for pavement, and the function, the principal objective of deasphalting is not to make asphalt, really. It is a byproduct, but it to remove asphalt so what remains after removing the asphalt from the residue could be used for ...

The method of deasphalting heavy oil and natural bitumen

(57) Abstract: Usage: in the oil industry in the process for deasphalting heavy oil and natural bitumen. The inventive asphalt destroying the hydrocarbon solvent, for example n-heptane, carried out with the addition of non-ionic surfactants Dowfax with mass fraction of it in the solvent of 0.005 to 0.5% at a volume ratio solvent : raw material 3 : 1 to 20 : 1.

STUDY OF SELECTED - US EPA

Figure 3.8.1. Solvent Deasphalting Process Flow Diagram • One facility reported using propane and phenol solvents for deasphalting residuum. The DAO is sent to lube oil processing and the asphalt fraction is sent to delayed coking or fuel oil blending. During process upsets, heavy hydrocarbons may become entrained in the solvent

What Is Deasphalting? (with pictures) - wiseGEEK

Inappropriate solvents may fail to lift the asphalt and other impurities, which would make the resulting oil less usable. Refineries and chemical companies may experiment with new deasphalting technology to determine if it is possible to get cleaner, more usable materials with greater efficiency.

Solvent Deasphalting PPT Final - 1 | PDF | Cracking ...

SOLVENT DEASPHALTING A physical separation based residue upgradation process, separates vacuum residue on the basis of both molecular type & size. Produces extra heavy viscosity lube base stock and / or feedstock for conversion units. Pitch or Asphalt is obtained as bottom product 5 Applications of solvent deasphalting

[17]P7 Use of Solvent Deasphalting Process in Residues ...

Solvent deasphalting is a proven process for extracting a high purity deasphalted oil (DAO) from atmospheric or vacuum residues. The residual asphalt concentrates asphaltenes, metals and other contaminants. As a general trend, when the DAO yield increases, its purity decreases while asphalt becomes harder and more difficult to handle.

US9315733B2 - Asphalt production from solvent deasphalting ...

The asphalt can comprise asphaltic material obtained from a solvent deasphalting unit, and spent adsorbent material in the asphalt composition was previously utilized in the solvent deasphalting unit. The asphalt composition can also include process reject materials.

Enhanced solvent deasphalting process for heavy ...

A solvent deasphalting of crude oil or petroleum heavy fractions and residues is carried out in the presence of a solid adsorbent, such as clay, silica, alumina and activated carbon, which adsorbs the contaminants and permits the solvent and oil fraction to be removed as a separate stream from which the solvent is recovered for recycling; the adsorbent with contaminants and the asphalt bottoms ...

Pentane Solvent Deasphalting of Tahe Atmospheric Residue ...

Based on continuous thermodynamics analysis, relative molecular mass distribution model for solvent deasphalting was established. The effects of different operating conditions of solvent deasphalting on the relative molecular mass distribution and yield of deasphalting oil and de-oil asphalt were investigated by the model.

Refining Community | » Solvent Deasphalting 101

Solvent Deasphalting (SDA) is a highly efficient crude oil pretreatment– a separation process within the oil refining process typically utilized in a crude oil process or bitumen upgrader. It separates the crude according to molecular type, dissolving certain components and then leaving behind a residue which contains contaminants.

deasphalting.htm - Pennsylvania State University

Usually, the VDR goes directly into a propane deasphalter to precipitate the asphalt (asphaltenes, hard and soft resins). Purpose of Process: 1. Produce asphalt as a final product 2. Remove asphaltenes to prevent coke buildup on catalyst in further processing of the DAO The deasphalting process also removes metals and sulfur.

Asphalt production from solvent deasphalting bottoms -

The asphalt can comprise asphaltic material obtained from a solvent deasphalting unit, and spent adsorbent material in the asphalt composition was previously utilized in the solvent deasphalting unit. The asphalt composition can also include process reject materials.

US4239616A - Solvent deasphalting - Google Patents

US4239616A US06/059,719 US5971979A US4239616A US 4239616 A US4239616 A US 4239616A US 5971979 A US5971979 A US 5971979A US 4239616 A US4239616 A US 4239616A Authority US United States Prior art keywords separation zone solvent phase heavy temperature Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.

Advances in solvent deasphalting technology (Miscellaneous ...

@article{osti_403512, title = {Advances in solvent deasphalting technology}, author = {Northup, A H and Sloan, H D}, abstractNote = {The introduction of the Residuum Oil Supercritical Extraction (ROSE{trademark}) process in the 1970`s made it possible to design energy efficient, cost effective deasphalting units of larger capacity. This breakthrough allowed solvent deasphalting technology …

Propane deasphalting - Big Chemical Encyclopedia

Propane deasphalting solvent deasphalting using propane as the solvent. Solvent deasphalting is carried out primarily to recover lube or catalytic cracking feedstocks from asphaltic residuals, with asphalt as a byproduct. Propane deasphalting is the predominant technique. The vacuum fractionation residual is mixed in a fixed proportion with a ...

Extractive deasphalting as a method of obtaining asphalt ...

At the next stage, it was proposed to carry out the process of deasphalting of bitumen with acetone at a solvent:crude ratio of 3:1. Therefore, production of deasphalted oil, with viscosity close to that of natural crude oil, and asphalt, as a feedstock for the production of universal road bitumen, intended for both summer and winter operating ...

Asphalt compositions containing solvent deasphalted ...

The asphalt composition of claim 4 containing i) said asphalt component containing 10 to 80 wt % of said solvent deasphalting bottoms, ii) 2 to 10 wt. % of said bottoms from rerefining of a lube oil, iii) 0 to 20 wt. % of fluxing component, and iv) 0 to 50 wt. % of said vacuum bottoms.

The Role of Solvent De-Asphalting (SDA) in Refining

Solvent deasphalting or SDA is a separation process based on differences in molecular types ... asphalt from the feedstock using a much lighter (low molecular weight) solvent hydrocarbon, which will dissolve . aliphatic compounds but not . asphaltenes. The output from the SDA unit is deasphalted oil ("DAO") and pitch or asphalt. Introduction.

Solvent Deasphalting - Refinery Distillation - Buffalo ...

The asphalt produced can be blended with straight-run asphalts or blended back with fuel oil. Modern solvent deasphalting units usually use a blend of light hydrocarbon solvents (C5-C6 paraffinic cut) to allow maximum operating flexibility. The solubility of oil in solvent at a fixed temperature increases as the concentration of heavier ...

Asphalt coking method - Foster Wheeler USA Corporation

The apparatus includes a solvent deasphalting section, in which a heavy hydrocarbon feed, such is whole crude, atmospheric or vacuum residues or any other heavy oil stream rich in asphaltenes, is contacted with a solvent to produce an asphalt mix, which is a mixture of asphalt and the solvent, and a deasphalted oil mix, which is a mixture of ...

Effect of the Phase State of the Solvent on Solvent ...

Fuel development for solvent deasphalting (SDA), by means of which it is possible to obtain high yields of deasphalted oil (DAO) with acceptable quality for subsequent refining in catalytic cracking processes and hydrocracking in particular, is nowadays becoming increasingly important. In this paper, an experimental study of the SDA of tar (vacuum residue) with n-pentane at various extraction ...

Solvent deasphalting of vacuum residue using carbon ...

Abstract. Solvent deasphalting of vacuum residue using carbon dioxide-toluene mixture was studied to assess the effect of the process parameters and mixture composition on the yield and composition of deasphalted oil (DAO) produced. An insignificant effect of the toluene content in the mixture on the DAO yield was found at a concentration above ...

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