25results about "Refining by solvent de-asphalting" patented technology

A method for stabilizing asphaltenes in petroleum feedstocks such as crude oil includes adding to the feedstock an effective amount of an additive containing at least one waste plastic. Suitable waste plastics include, but are not necessarily limited to, polyethylene, polyethylene terephthalate, polystyrene, polycarbonate, polyamide, and polyurethane, and combinations thereof. By "stabilizing" is meant keeping the asphaltenes in solution in the petroleum feedstocks.

The process herein can be used to thermally crack various hydrocarbon feeds and can completely omit the refinery link while the process of making crude oil into chemicals is very flexible in the crude oil aspect. In embodiments herein, the crude oil is gradually separated into at least a light fraction and a heavy fraction. These fractions are delivered to one of three upgrading operations, including a fixed bed hydroconversion unit, a solvent deasphalting unit, or an ebullated bed hydrocracking unit, depending on the mass of the light fraction and the heavy fraction. The product from the upgrading operation may be used as a feed to a steam cracker.

Processes herein may be used to thermally crack various hydrocarbon feeds, and may eliminate the refinery altogether while making the crude to chemicals process very flexible in terms of crude. In embodiments herein, crude is progressively separated into at least light and heavy fractions. Depending on the quality of the light and heavy fractions, these are routed to one of three upgrading operations, including a fixed bed hydroconversion unit, a solvent deasphalting unit, or an ebullated bed hydrocracking unit. Products from the upgrading operations may be used as feed to a steam cracker.

A process and system to deasphalt used motor oil distillate residue including VTAE the process including feeding the used motor oil distillate residue and a supercritical solvent to an asphaltene separator that outputs an overhead having deasphalted oil and a bottoms that includes pitch.

A method for producing one or more olefins and one or more lubricant base oils is disclosed. The method includes hydrocracking hydrocarbons from a hydrocarbon feed stream comprising vacuum gas oil to produce a stream comprising hydrocracked hydrocarbons. The method further includes fractionating the hydrocracked hydrocarbon-containing stream to form an intermediate stream. The method further includes steam cracking the one or more intermediate streams to produce at least one olefin and processing the one or more intermediate streams to produce at least one lubricant base oil.

The present invention relates to a process for hydroconversion of a feedstock comprising a plastic fraction (102), in particular derived from plastic waste, and a heavy hydrocarbon fraction (101) containing a portion of at least 50% by weight, or even at least 80% by weight, having a boiling point of at least 300°C. The hydroconversion uses one or more ebullated bed or hybrid ebullated-entrained bed reactors (20) operating in the presence of hydrogen and H2S, and preferably two successive hydroconversion steps, in order to produce materials of higher quality, with a lower boiling point, for example for the production of fuels, while enabling plastic waste to be upgraded. H2S is used to improve the conversion of the plastic fraction of the feedstock, and is contained in a recycled hydrogen stream resulting from the process, wherein the content of H2S is between 2% and 70% by weight relative to the plastic fraction of the feedstock.

The present invention relates to a process for producing middle distillates from a feedstock comprising a residual hydrocarbon feedstock and a hydrogen-deficient feedstock. The process comprises: (a) a step of dewaxing the residual hydrocarbon feedstock to obtain a dewaxed product having at least 50% by weight of a boiling point above 550 °C and an asphaltene product; (b) a step of combining the dewaxed product with the hydrogen-deficient feedstock to produce a mixed dewaxed product, wherein the hydrogen-deficient feedstock has a hydrogen (H) content of at least 6% by weight to a maximum of 11.3% by weight; (c) a step of hydrodemetallizing at least a part of the mixed dewaxed product obtained from step (b) to produce a hydrodemetallized product; (d) a step of hydrotreating at least a part of the hydrodemetallized product obtained from step (c) to produce a hydrotreated product; (e) a step of hydrocracking at least a part of the hydrotreated product obtained from step (d) to produce a hydrocracked product; and (f) a step of subjecting at least a part of the hydrocracked product obtained from step (e) to a separation treatment to produce at least a middle distillate fraction.

Systems and methods are provided for partial upgrading of heavy hydrocarbon feeds to meet transport specifications, such as pipeline transport specifications. The systems and methods can allow for one or more types of improvement in heavy hydrocarbon processing prior to transport. In some aspects, the systems and methods can produce a partially upgraded heavy hydrocarbon product that satisfies one or more transport specifications while incorporating an increased amount of vacuum gas oil and a reduced amount of pitch into the partially upgraded heavy hydrocarbon product. In other aspects, the systems and methods can allow for increased incorporation of hydrocarbons into the fraction upgraded for transport, thereby reducing or minimizing the amount of hydrocarbons requiring an alternative method of disposal or transport. In still other aspects, the systems and methods can allow for reduced incorporation of external streams into the final product for transport while still satisfying one or more target properties.

The present invention relates to resid processing, particularly related to conversion of resid material with maximum recovery of lighter hydrocarbons. The invented process utilizes a novel scheme for integration of solvent de-asphalting and delayed coking processes to maximize the residue conversion to valuable products, with cleaner quality of middle distillates and fuel oil products, in comparison with other integrated solvent de-asphalting and delayed coking schemes. This process also has an additional flexibility to vary the recycle quantity, without impacting fractionator operation of the delayed coking section, which further enhances the product recovery and achieves maximum conversion of the resid feedstock, with minimum impact on liquid product properties.

Used lubricating oils are fed to a dehydration / fuel stripping unit to create de-watered / defueled feedstock which is fed to a Vacuum Distillation Column ( VDC) to remove and send lighter fractions for processing into base oil. Vacuum Tower Asphalt Extender (VI' AE) is collected from the Vacuum Distillation Bottom (VDB) of the VDC and fed to a Solvent Deasphalting unit (SDA) along with a. hydrocarbon solvent, to create a Concentrated Asphaltene Polymer Residue (CAPR) containing concentrations of the depleted polymer additives and wear metals. In particular embodiments, the CAPR is used to create relatively high- grade asphalt binders suitable for paving applications.

A process for steam cracking a whole crude including a volatilization step performed to maintain a relatively large hydrocarbon droplet size. The process may include contacting a whole crude with steam to volatilize a portion of the hydrocarbons, wherein the contacting of the hydrocarbon feedstock and steam is conducted at an initial relative velocity of less than 30 m / s, for example. The resulting vapor phase, including volatilized hydrocarbons and steam may then be separated from a liquid phase comprising unvaporized hydrocarbons. The hydrocarbons in the vapor phase may then be forwarded to a steam pyrolysis reactor for steam cracking of the hydrocarbons in the vapor phase.

A process and system for converting a high-pour-point organic feedstock to an upgraded product that exhibits good low-temperature properties (cloud point, pour point, and viscosity) and improved transportability. The high-efficiency process includes a continuous-flow, high-rate hydrothermal reactor system and integrated separation systems that result in low complexity, small footprint, high energy efficiency, and high yields of high-quality upgraded product. The system is specifically desirable for use in converting waxy feedstocks, such as yellow and black wax petroleum crudes and wax from the Fischer-Tropsch (FT) process, into upgraded crude that exhibits a high diesel fraction and, correspondingly, low vacuum gas oil (VGO) fraction.

An exemplary embodiment of the present disclosure provides a system and process for making fuel from fossil and non-fossil feedstocks. The system and process can include adding a reaction product of the fossil feedstock from a first ebullated bed (EB reactor to a separator, adding a deasphalted oil product from a solvent deasphaltene (SDA) extractor to a second EB reactor, adding the non-fossil feedstock to the second EB reactor, performing a catalytic reaction on the deasphalted oil product and the non-fossil feedstock in the second EB reactor to form a mixed effluent, and mixing the mixed effluent from the second EB reactor and the fossil feedstock reaction product in the separator, thereby producing unconverted heavy oil, partially converted intermediates, and hydroconverted products.

The invention relates to a process for the hydroconversion of a feedstock comprising a plastic fraction (102), in particular derived from plastic waste, and a heavy hydrocarbon fraction (101) containing at least 50% by weight or even at least 80% by weight of a fraction having a boiling point of at least 300 DEG C. The hydroconversion uses one or more ebullated beds or hybrid ebullated-entrained bed reactors (20), operated in the presence of hydrogen and H2S, and preferably two successive hydroconversion steps, to produce higher quality, lower boiling materials, such as for producing fuels, while being able to upgrade the plastic waste. H2S is used to improve the conversion of the plastic fraction in the feedstock, and it is contained in a recycle hydrogen stream obtained from the process wherein the content of H2S is from 2 wt% to 70 wt% relative to the plastic fraction of the feedstock.

The present invention relates to a process for hydroconversion of a feedstock comprising a plastic fraction containing at least 70% by weight of PE in the high density and / or low density form (102), in particular derived from plastic waste, and a non-asphaltene heavy hydrocarbon fraction (101) containing a portion of at least 90% by weight having a boiling point of at least 300°C, for example of VGO or DAO type. The hydroconversion uses one or more ebullated bed or hybrid ebullated-entrained bed reactors (20), and preferably two successive hydroconversion steps, with a view to producing materials of higher quality, with a lower boiling point, for example for the production of fuels, while enabling plastic waste to be upgraded.

Processes herein may be used to thermally crack various hydrocarbon feeds, and may eliminate the refinery altogether while making the crude to chemicals process very flexible in terms of crude. In embodiments herein, crude is progressively separated into at least light and heavy fractions. Depending on the quality of the light and heavy fractions, these are routed to one of three upgrading operations, including a fixed bed hydroconversion unit, a fluidized catalytic conversion unit, or a residue hydrocracking unit that may utilize an ebullated bed reactor. Products from the upgrading operations may be used as feed to a steam cracker

The present disclosure provides a process and system for deasphalting a waste oil distillate residue including VTAE, the process including feeding the waste oil distillate residue and a supercritical solvent to an asphaltene separator, the asphaltene separator outputting an overhead having deasphalted oil and a bottoms distillate including pitch.

The invention provides application of deasphalted oil in viscosity reduction of thick oil. According to the method, n-pentane is adopted as a deasphalting solvent, the obtained deasphalted oil has good viscosity reduction performance under the conditions that the temperature is 170 DEG C and the pressure is 3.5 MPa, and the viscosity of thickened oil can be reduced by 90% or above under the condition that the mass ratio of the n-pentane deasphalted oil to Tahe crude oil is 1: 1.

Compositions may include an asphaltene dispersant that is the product of a reaction between a polysaccharide having at least two sugar subunits and one or more fatty acid reagents, and a petroleum fluid produced from a subterranean formation and containing asphaltenes therein. The asphaltene dispersant may have a molecular weight of at least 4000 Da. Compositions may further include an aromatic solvent. Methods may include contacting a hydrocarbon fluid with an asphaltene dispersant dissolved in an aromatic solvent, wherein the asphaltene dispersant is the product of the reaction of a polysaccharide and one or more fatty acid reagents. Methods may also include contacting a hydrocarbon fluid with an asphaltene, wherein the asphaltene dispersant is the product of the reaction of a polysaccharide and one or more fatty acid reagents and has a molecular weight of at least 4000 Da.

A system for steam cracking a whole crude that may include a volatilization device, a control system, a separator, and a steam pyrolysis reactor. The volatilization device may be configured to separate a vapor phase from a liquid phase. The control system may be configured to maintain a flow rate of the whole crude and steam, at an initial relative velocity of less than 30 m / s. The separator may be fluidly connected to the volatilization device and configured to separate the liquid phase into a second vapor phase, and a second liquid phase. The steam pyrolysis reactor may include a convection section and a steam pyrolysis heater section, the convection section configured to heat the vapor phase, the liquid phase, and the second vapor phase, and the steam pyrolysis heater section configured to steam crack hydrocarbons in the vapor phase thereby generating a cracked hydrocarbon product.

A system is provided for upgrading an input stream 101 of straight run vacuum residue or cracked feedstock, including a vacuum tower 500, a hydrocracking unit 510, a high lift solvent deasphalting unit 520, a low lift solvent deasphalting unit 530, and a bitumen injection unit 540 or a pitch pelletizing unit 640, and optionally a hydrotreating reactor 750. The system and its components can deliver distillate and naphtha products, light ends products, an asphaltene lean heavy deasphalted oil stream 125, an asphaltene rich pitch stream 126, a light deasphalted oil that is a lubricant base oil feedstock, a heavy oil stream 137, a bitumen and asphalt stream 145, or a solid fuel. Further provided is a process including the steps of introducing straight run vacuum residue or cracked feedstock into the system and operating the system, the steps of operating the system including fractionation, solvent stage deasphalting, and hydrocracking.

The invention relates to a process for the hydroconversion of a feedstock comprising a plastic fraction (102), in particular derived from plastic waste, containing at least 70% by weight of PE in high-density and / or low-density form, and a heavy fraction (101) of non-asphaltene hydrocarbons containing at least 90% by weight of fractions having a boiling point of at least 300 DEG C, for example of the VGO or DAO type. The hydroconversion uses one or more ebullated bed or hybrid ebullated-entrained bed reactors (20), and preferably two successive hydroconversion steps, to produce higher quality, lower boiling materials, for example for fuel production purposes, while being able to upgrade the plastic waste.

The composition may include an asphalt composition having an MCR of greater than 30% by weight, a softening point of about 30 DEG C to about 240 DEG C, and wherein the asphalt composition is 100% by weight soluble in toluene.

Embodiments of the present disclosure are directed to a process for producing upgraded product from residue comprising atmospheric residue or vacuum residue upgrading comprising separating the residue through a Solvent Deasphalting (SDA) unit, wherein the SDA unit includes an asphaltene separator that separates the residue into asphaltene pitch and a stream comprising deasphalted oil (DAO) and resin, and a resin separator that subsequently separates the stream comprising DAO and resin into separate DAO and resin streams, treating the resin stream with supercritical water (SCW) to produce an upgraded resin stream, and hydroprocessing a portion of the upgraded resin stream and the DAO stream to produce the upgraded product.

A method may include: introducing a stream comprising a vacuum gas oil into a liquid-liquid extraction unit; contacting the vacuum gas oil with a dihydrolevoglucosenone solvent to extract a portion of aromatic compounds from the vacuum gas oil to produce a raffinate stream with reduced aromatic compound concentration; and dewaxing the raffinate stream to form a base stock.