A petroleum product refining process for removing petroleum oil and bitumen oil from the vacuum residue obtained by distillation of crude oil sometimes also from atmospheric residue to obtain deasphalted oil and simultaneously producing petroleum pitch raw materials. Supercritical extraction rose process is the premier deasphalting technology. Tutorial on upgrading of oilsands bitumen murray r gray imperial oilnserc industrial research chair in. Us2729589a us293114a us29311452a us2729589a us 2729589 a us2729589 a us 2729589a us 293114 a us293114 a us 293114a us 29311452 a us29311452 a us 29311452a us 2729589 a us2729589 a us 2729589a authority us united states prior art keywords butane solvent oil deasphalting propane prior art date 19520612 legal status the legal status is an assumption and is. In this work, the effect of nanoparticles in deasphalting heavy oil and extraheavy oil process at laboratoryscale based on the conventional solvent deasphalting process was studied and named enhancedsolvent deasphalting esda process. The deasphalting process with liquid propane is a process aimed at the use of oil waste, which is still present in the composition light fractions of hydrocarbons. Rsr recovers a lowcontaminant, relatively high in hydrogen content, deasphalted oil product dao from the residue. Supercritical extraction rose process is the premier deasphalting technology available in industry today. Maximizing the lift while maintaining stable process conditions can be a challenge.
When propane is used as solvent, the process is called propane deasphalting pda figure1 and it. Uniting the refining community around this process to prevent safety and reliability incidents is a. These metrics are regularly updated to reflect usage leading up to the last few days. This article explores the overview of solvent deasphalting, how it works, what it is used for, and what sdas are currently in the market. Simplified flow diagram of a deasphalting process fsc. Deasphalting is based on solubility of hydrocarbons in propane, i.
Separation of asphaltenes and lube oil from petroleum. The solvent used in generally propane, butane or even light gasoline. We can define deasphalting process as a liquidliquid separation operation that extracts the last of the easily convertible hydrocarbons from heavy oil 6. Solvent deasphalting, as stated earlier, utilizes light hydrocarbon solvents and produces valuable extract product, called deasphalted oil dao and thus reduces the net availability of vacuum residue in a refinery. Refinery options to process mazut 4 1 vacuum distillation and optionally solvent deasphalting sda to maximise hydrocracker hcufcc feed 2 conversion of vrsda pitch to valuable light products via slurry bed process such as uniflex mc process. Solvent deasphalting amec foster wheeler amec foster. It is part of the refining process used to break crude oil down into various components of commercial value. Deasphalting article about deasphalting by the free. Solvent deasphalting is used in refineries processing heavy crude oils to upgrade heavy bottoms streams to deasphalted oil that may be processed to produce. Deasphalting is a chemical process that separates asphalt and other compounds from petroleum products. These applications were called propane deasphalting or propane deresining when used to separate high molecular weight resins from pennsylvaniagrade vacuum residue. Kaiser, 5th edition, crc press ny, 2007, chapter 15, pp. The scheme envisages process modification at propane deasphalting and mek dewaxing unit of lube refinery in order to improve overall thermal efficiency of heat exchanging equipment and to improve yield of lube oil from slack waxes in which valuable oils are still entrained.
Solvent deasphalting is a pretreatment process for inferior residual oil. This is 2nd part of how petroleum refinery workoverview of petroleum refinery lecture series. The process is also used for debottlenecking of existing vacuum distillation units and cokers. Depending on the solvent selection, the dao can be an excellent feedstock. Solvent deasphalting units sda are susceptible to all the fouling mechanisms present in other heavy processing units yet have the added complexity of higher pressure and complicated solvent recovery systems.
Solvent recovery is a key procedure for determining the. Sda produces a lowcontaminant, relatively high hydrogen deasphalted oil product dao and a pitch product that. The deasphalting process with liquid propane is a process aimed at the use of oil waste, which is still present in the composition light fractions. A costeffective solution for the disposal of solvent deasphalting process bottoms that include spent solid adsorbent material containing ashproducing constituents, asphalt and process reject materials is provided by introducing them in the form of a flowable slurry into a membrane wall gasification reactor to produce a synthesis gas and. Propane deasphalting article about propane deasphalting. Overview 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. The pda process using propane as the only solvent has been implemented by edl on industrial scale in hamburg. Study of selected petroleum refining residuals epa web archive. Refining operations petroleum refining processes and operations can be separated into five basic areas. The us patent and trademark office has granted patent for the enhanced solvent deasphalting process for heavy hydrocarbon feedstocks utilising solid adsorbent, a process improvement, invented by the head of clean fuels project team at saudi aramco.
Each barrel of oil can yield a variety of useful products which can be sold after separation. Vacuum residue seperation process which produces a very heavy product with a high impurity content, asphalt, and a deasphalted oil dao. Solvent deasphalting sda is a separation process in which residues are selectively separated by molecular type by mixing with paraffinic solvents and. This work evaluated the effect of the nanoparticles of sio 2 in the separation efficiency based on deasphalted oil dao fraction quality compared to the. Deasphalting process exxon research and engineering company.
This stateoftheart process extracts highquality deasphalted oil dao and asphaltenes from atmospheric or vacuum residues and other feedstocks. The process may also be used in the oil field to enhance the value of heavy crude oil before it gets to the refinery. Solvent deasphalting sda is a separation process in which residues are selectively separated by molecular type by mixing with paraffinic solvents and precipitating out of solution asphaltenes and other residue heavy components. It is less expensive to build and operate than other residue conversion processes and is especially useful in recovering large quantities of highquality oils, which can be further upgraded via traditional fcc and hydrocracking units. Most deasphalting process use light aliphatic hydrocarbon such as propane, butane, pentane, etc. The solvent deasphalting sda process is a heavy oil upgrading process and used to separate asphaltene, the heaviest and most polar fraction of vacuum residue vr of heavy oil, by using density differences, to obtain deasphalted oil dao. Sensibility analysis of propane deasphalting process variables. Us2729589a us293114a us29311452a us2729589a us 2729589 a us2729589 a us 2729589a us 293114 a us293114 a us 293114a us 29311452 a us29311452 a us 29311452a us 2729589 a us2729589 a us 2729589a authority us united states prior art keywords butane solvent oil deasphalting propane prior art date 19520612 legal status the legal status is an assumption and is not a legal conclusion.
Uopfwusa solvent deasphalting process refining refining solvent deasphalting is a unique separation process in which residue is separated by molecular weight density, instead of by boiling point, as in the vacuum distillation process. Simplified flow diagram of a deasphalting process fsc 432. The objective of propane deasphalting is to produce bright stocks for downstream treatments. As the first step in deasphalting, residue feedstock is mixed with four to eight times the volume of liquid propane. In this work, the effect of nanoparticles in deasphalting heavy oil and extraheavy oil process at laboratoryscale based on the conventional solvent deasphalting process was studied and named enhancedsolvent deasphalting e sda process. Solvent deasphalting sda has a key role in todays refinery, as the technology can be used in a variety of ways for residue upgrading. This requires more efficient residue processing technologies. The earliest commercial applications of solvent deasphalting used propane as the solvent to extract highquality lubricating oil bright stock from vacuum residue. We have been designing and constructing solvent deasphalting process sda units since the late 1940s. See a more detailed flow diagram in your textbook along with a description of the operating conditions in the commercial process. Solvent recovery in solvent deasphalting process for. In this process c 3 and c 4 are normally mixed to reach higher yields of dao which leads to a deteriorating quality of dao, however.
Propane and butane have been generally used in the sda process for high quality dao while heavier deasphalting solvent c5, c6 or a mixture are utilized to generate higher dao yield. Fractionation distillation is the separation of crude oil in atmospheric and vacuum distillation towers into groups of hydrocarbon compounds of. Separation of asphaltenes and lube oil from petroleum residuum. It has the advantage of being a relatively low cost process that has flexibility to meet a wide range of dao qualities. Pilot plant study on continuous propane deresining of. Citations are the number of other articles citing this article, calculated by crossref and updated daily. Propane deasphalting cokeforming tendencies of heavier distillation products are reduced by removal of asphaltenic materials by solvent extraction. One facility reported using propane and phenol solvents for deasphalting residuum. We provide both propane sda, usually for lube base oils production, and butanepentane sda units for catalytic cracker and hydrocracker feed production, through our alliance with uop. While distillation achieves separationfractionation 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 solubilityinsolubility of molecular components in a given solvent. Article views are the countercompliant sum of full text article downloads since november 2008 both pdf and html across all institutions and individuals. Extraction of dao with solvent deasphalting process has been studied under various conditions for maximum utilization of the heavier residue.
The output from the deasphalter unit is deasphalted oil dao and asphalt. Sensibility analysis of propane deasphalting process. In practice, residue is extracted with propane to maximize yield of deasphalted oil dao with an acceptable carbon conradson level. Resid is charged through a mixer m1, where it is mixed with solvent before entering the asphaltene separator v1, which uses special internals to achieve maximum benefit of counter current solvent flow. Us3278415a us280562a us28056263a us3278415a us 3278415 a us3278415 a us 3278415a us 280562 a us280562 a us 280562a us 28056263 a us28056263 a us 28056263a us 3278415 a us3278415 a us 3278415a authority us united states prior art keywords solvent oil residuum asphaltenes light prior art date 19630515 legal status the legal status is an assumption and is not. The scheme envisages process modification at propane deasphalting and mek dewaxing units of lube refinery in order to improve overall thermal efficiency of heat exchanging equipment and to improve yield of lube oil from slack waxes in which valuable oils are still untrained. The uopfwusa solvent deasphalting process produces a lowcontaminant deasphalted oil dao rich in paraffinic type molecules. Solvent deasphalting sda is a unique separation process in which the residue is separated by molecular weight density instead of by boiling point, producing a low contaminant deasphalted oil dao that is rich in paraffins.
Liquid propane is a good solvent butane and pentane are also commonly used. Solvent deasphalting clg chevron lummus global mdr. Heavy oil upgrading by the separation and gasification of. Desalting is used to remove salt, minerals, grit, and water from crude oil feedstocks before refining. Solvent used in the deasphalting process is a furfurol b phenol c propane d hexane. Request pdf solvent recovery in solvent deasphalting process for economical vacuum residue upgrading the solvent deasphalting sda process is a heavy oil upgrading process and used to. 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. Significantly increase transport fuel yields in your refinery the uopfw solvent deasphalting process sda separates residue by molecular weight, instead of by boiling point to produces a lowcontaminant deasphalted oil that is rich in paraffinictype molecules and a high viscosity residue by product pitch. The study makes use of the chemical process simulator aspen plus, through which the authors studied the influence of certain process variables.
Deasphalting process for production of feedstocks for dual applications. Physical and chemical processes catalytic thermal hydrotreating catalytic reforming catalytic cracking hydrocracking catalytic dewaxing alkylation polymerization isomerization visbreaking delayed coking flexicoking distillation solvent extraction propane deasphalting solvent dewaxing blending chemical physical 14. Since the sda technology has the lowest invest ment cost compared to other residue technolo gies. Liquid propane use in dewaxing,deasphalting, and refining. In this work, the effect of nanoparticles in deasphalting heavy oil and extraheavy oil process at laboratoryscale based on the conventional solvent deasphalting process was studied and named. This work evaluated the effect of the nanoparticles of sio2 in the separation efficiency based on deasphalted oil dao fraction quality compared to the. The byproduct of deasphalting is an asphaltene stream for which it is often difficult to find a beneficial use. Us20140238903a1 deasphalting process for production of.
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