Solvent deasphalting process flow diagram one facility reported using propane and phenol solvents for deasphalting residuum. The asphalthene products from the rose process is often blended to fuel oil, but can also be. 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. Formulating and blending is the process of mixing and combining hydrocarbon fractions, additives, and other.
Heavy oil upgrading by the separation and gasification of. Propane deasphalting is a process of recovery of hydrocarbon distillates from vacuum residue by extracting with liquid propane. We have been designing and constructing solvent deasphalting process sda units since the late 1940s. Procedure for development of mathematical model of propane deasphalting process p. Solvent recovery in solvent deasphalting process for. Liquid propane use in dewaxing,deasphalting, and refining. Deasphalting process using propane or other solvents employs relatively larger sf ratios hence in conventional units appreciable energy. Article views are the countercompliant sum of full text article downloads since november 2008 both pdf and html across all institutions and individuals. These applications were called propane deasphalting or propane deresining when used to separate high molecular weight resins from pennsylvaniagrade vacuum residue. Liquid propane use in dewaxing,deasphalting, and refining heavy oils. 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. Simplified flow diagram of a deasphalting process fsc 432. The solvent deasphalting process is a heavy oil upgrading process in which. Solvent deasphalting sda has a key role in todays refinery, as the technology can be used in a variety of ways for residue upgrading.
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. During process upsets, heavy hydrocarbons may become entrained in the solvent. This stateofart process extracts highquality deasphalted oil dao from atmospheric or vacuum residues and other feedstocks. Propane deasphalting visbreaking delayed coking flexicoking hydrotreating catalytic reforming catalytic cracking 6. Solvent recovery is a key procedure for determining the. The residuum oil supercritical extraction process is the premier deasphalting technology available in industry today.
The output from the deasphalter unit is deasphalted oil dao and asphalt. Supercritical extraction rose process is the premier deasphalting. In practice, residue is extracted with propane to maximize yield of deasphalted oil dao with an acceptable carbon conradson level. Separation of asphaltenes and lube oil from petroleum. Due to the current soaring energy prices, refineries are looking for ways to increase profits and margins. Supercritical process is the method of choice for new solvent deasphalting units.
Propane deasphalting is commonly used to precipitate asphaltenes from residual oils. Effective refinery planning is an essential part in achieving maximum profits and meeting market demands. One facility reported using propane and phenol solvents for deasphalting residuum. 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.
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. 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. Solvent deasphalting clg chevron lummus global mdr. This made the solvent deasphalting process much more energy efficient than not only older solvent deasphalting units, but also vacuum distillation process, both of which require evaporation and condensation. This report examines the basic technology of supercritical. Desalting is used to remove salt, minerals, grit, and water from crude oil. Rsr recovers a lowcontaminant, relatively high in hydrogen content, deasphalted oil product dao from the residue. Zolotarev 1 chemistry and technology of fuels and oils volume 20, pages 491 496.
Unesco eolss sample chapters petroleum engineering downstream future technology in heavy oil processing jorge ancheyta, mohan s. The process consists of mixing a water solution of lye sodium hydroxide or caustic soda. Deasphalting of crude oils using supercritical fluids. 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. Tutorial on upgrading of oilsands bitumen murray r gray imperial oilnserc industrial research chair in. Deasphalting process exxon research and engineering company. Extraction of dao with solvent deasphalting process has been studied under various conditions for maximum utilization of the heavier residue. When propane is used as solvent, the process is called propane deasphalting pda figure1 and it produces dao which is finished into extra heavy viscosity. 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. The uopfwusa solvent deasphalting process produces a lowcontaminant deasphalted oil dao rich in paraffinic type molecules. Request pdf sensibility analysis of propane deasphalting process variables the deasphalting process with liquid propane is a process aimed at the use of oil. Sensibility analysis of propane deasphalting process variables.
Liquid propane is a good solvent butane and pentane are also commonly used. On february 16, 2007, a propane fire erupted at the valero mckee refinery in sunray, texas, north of amarillo. The study makes use of the chemical process simulator aspen plus, through which the authors studied the influence of certain process variables. In an attempt to conserve energy mainly utilities and improve process economics, the. The earliest commercial applications of solvent deasphalting used propane as the solvent to extract highquality lubricating oil bright stock from vacuum residue. Sda unit as part of a modern residue processing technology. Us3975396a us05551,896 us55189675a us3975396a us 3975396 a us3975396 a us 3975396a us 55189675 a us55189675 a us 55189675a us 3975396 a us3975396 a us 3975396a authority us united states prior art keywords oil solvent deasphalting process ranging prior art date 19750221 legal status the legal status is an assumption and is not a legal conclusion. 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. 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. The objective of propane deasphalting is to produce bright stocks for downstream treatments. 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.
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. Dewaxing and deasphalting advances in chemistry acs. Bhts has the capability to conduct pilot plant tests to set the process design basis and provide. Chemical treatment of petroleum products the aims of chemical treatment is to remove the impurities, such as sulfur, nitrogen, oxygen. Propane deasphalting cokeforming tendencies of heavier distillation products are reduced by removal of asphaltenic materials by solvent extraction. The particular paraffins, such as npentane and nheptane, are used to precipitate asphaltenes from crude oil. 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. Propane deasphalting pda solvent extraction using propane to separate heavy lube components in vacuum residuum from the asphaltenes and resins. Procedure for development of mathematical model of propane.
Three workers suffered serious burns, and the refinery was forced to shut down. These metrics are regularly updated to reflect usage leading up to the last few days. The byproduct of deasphalting is an asphaltene stream for which it is often difficult to find a beneficial use. 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. As the first step in deasphalting, residue feedstock is. The solvent deasphalting process is a heavy oil upgrading process in which deasphalted oil is extracted from heavy oil feedstock by precipitating asphaltene using an excess amount of alkane solvent. Sensibility analysis of propane deasphalting process. Primary upgrading vacuum residue conversion thermal cracking coking. With the introduction of high vacuum distillation and the selective precipitation of the asphaltic materials with propane, increased recovery of the valuable high viscosity oil fractions has been realized. 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. A process for deasphalting an asphaltcontaining mineral oil which comprises. Refinery planning is a very complex problem with numerous inputs and outputs. Study of selected petroleum refining residuals epa archives. Citations are the number of other articles citing this article, calculated by crossref and updated daily.
Solvent deasphalting amec foster wheeler amec foster. As the first step in deasphalting, residue feedstock is mixed with four to eight times the volume of liquid propane. Deasphalting is based on solubility of hydrocarbons in propane, i. 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. Corrosion in propane deasphalting unit in a lube producing refinery. Process program sri international abstract menlo park, califomir 94025 process economics program report no. 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 dao is sent to lube oil processing and the asphalt fraction is sent to delayed coking or fuel oil blending. Simplified flow diagram of a deasphalting process fsc. The problem of processing heavy petroleum the situation of worldwide reserves of crude oils is very clear. These processes are the principal ones in commercial use today for deasphalting of petroleum.
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