31results about "Refining with acid-containing liquids" patented technology

Bio-sulphur produced in a biological desulfurization unit has an alkali-metal content in a range of from 0.5 to 4.0 wt.%. The bio-sulphur is treated to produce a sulphur additive having an alkali-metal content in a range of from 0.001 to 0.4 wt.%. The sulphur additive is passed to a processing step for production of fuels, base oils, and / or chemicals.

The invention relates to a method for purifying a composition comprising a plastic liquefaction oil, wherein: (a) a plastic liquefaction oil composition is provided, then (b) washed with a first aqueous solution to obtain an organic phase containing the washed composition and a first aqueous effluent, then (c) the organic phase from step (b) is treated in the presence of a basic compound at a temperature of at most 450°C to obtain an organic effluent comprising a treated composition, and (d) the organic effluent from step (c) is washed with a second aqueous solution to obtain a purified composition having a reduced heteroatom content, and a second aqueous effluent. In addition, during step (b), the first aqueous effluent is entirely or partially returned to step (d), and / or during step (d), the second aqueous effluent is entirely or partially returned to step (b).

A process is provided for reducing the nitrogen content of a renewables stream originating from a liquid renewables stream, a fraction thereof, comprising a step of treating said renewables stream or said fraction with acid. A plant for carrying out the process is also provided.

A method of preparing graphene from coal can include thermally processing raw coal and, after the coal has been at least partially cooled from thermal processing, forming reduced graphene oxide from the coal.

The present invention relates to a method for the production of a lignin oil, and the lignin oil obtained by the method. The method comprises liquefying a lignin material by thermal treatment at a temperature of from 100 °C to 245 °C in the presence of a base comprising potassium ions, and a non-aqueous fluid comprising ethanol; followed by addition of an acid to the lignin oil to precipitate potassium salt, and thereafter subjecting the lignin oil to demetallization.

The application provides a crude oil demetallization method and relates to the technical field of petroleum refining processing. The method avoids the disadvantages of the traditional demetallization method of an electric desalting device, selects the ultrasonic technology to strengthen the crude oil demetallization process before the crude oil enters the electric desalting device, removes the chelate precipitate by using the cross-flow filtration technology and the phase separation technology, improves the utilization rate of the demetallization agent, controls the residence time of the demetallization reaction by using a permeation side control valve, makes the oil agent mixture circulate in the system, realizes the efficient removal of the metal in the crude oil, and constructs a continuous online recyclable demetallization process technology.

The invention relates to a method for obtaining heteroatom-containing monomers during the pyrolysis of polymer-containing starting materials, the method comprising: providing a starting material (30) which comprises at least one heteroatom-containing polymer, introducing the starting material into a pyrolysis reactor (16), pyrolysing the starting material (30) in the pyrolysis reactor (16), wherein at least the heteroatom-containing polymer is pyrolytically cleaved, and wherein a product gas is obtained which comprises heteroatom-containing monomers (M), spray cooling the product gas, wherein the product gas already comprises a polar solvent prior to spray cooling, and / or wherein a polar solvent is added to the product gas during spray cooling, wherein a multi-phase product liquid (32) is obtained as a result of the spray cooling and comprises a polar liquid phase (34) and a non-polar liquid phase (36), wherein the heteroatom-containing monomer (M) and the polar solvent are enriched in the polar liquid phase, and separating the polar liquid phase (34) from the non-polar liquid phase (36).

The invention discloses a method for removing 2, 5-diphenyloxazole in linear alkylbenzene and application thereof.The linear alkylbenzene containing 2, 5-diphenyloxazole is subjected to shallow sulfonation in the presence of catalysts such as a 4A molecular sieve, activated carbon, kaolin and bentonite at the temperature of 0-30 DEG C, the content of 2, 5-diphenyloxazole in the linear alkylbenzene can be reduced to 6 ppm or below from 3000 ppm through simple filtration, and the 2, 5-diphenyloxazole in the linear alkylbenzene can be reduced to 6 ppm or below. And sulfonating through an SO3 membrane reactor to obtain an alkyl benzene sulfonic acid superior product.

The present invention relates to an improved method for treating liquefied waste plastic, comprising: providing a volume of oil based on liquefied waste plastic; heat treating the volume of LWP-based oil; phase-separating the resulting heat-treated mixture volume into a first aqueous phase volume and a first oil phase volume; separating out a first aqueous phase volume; adjusting the pH of the first aqueous phase volume to a pH 9.0 or less; and separating the pH-adjusted volume phase into at least a second aqueous phase volume and a second oil phase volume.

The present invention belongs to the field of energy and chemical industry, and specifically discloses a method for selective oxidative desulfurization in petroleum and its products. In this method, in a polar phase composed of water and acetonitrile, organic sulfides in a non-polar phase oil solution are selectively removed by direct oxidation of peroxy organic acid and activation of the peroxy organic acid by a catalyst to produce active substances. In the polar phase, peroxypropionic acid is used as an oxidant, and low-valent transition metals are used as catalysts to activate the peroxypropionic acid to produce active substances to achieve oxidative removal of organic sulfur in the non-polar phase. This process is suitable for the direct removal of organic sulfur in petroleum and the selective removal of organic sulfur in petroleum products, and can be expanded to the selective desulfurization of various liquid phase systems, such as the desulfurization of waste tire pyrolysis liquid. This process is suitable for reactions under normal temperature and pressure, and the process flow is simple and can be flexibly adjusted according to actual needs.

A method of preparing graphene from coal can include thermally processing raw coal and, after the coal has been at least partially cooled from thermal processing, forming reduced graphene oxide from the coal.

The present invention provides a method of reducing the nitrogen content in a renewable material stream derived from a liquid renewable material stream or a fraction thereof, the method comprising the step of treating the renewable material stream or the fraction with an acid. The invention also provides a device for implementing the method.

The invention discloses a method for extracting and removing a nitrogen-containing compound in fuel oil by using an acidic natural eutectic solvent. The method comprises the following steps: forming the acidic natural eutectic solvent from L-proline, mandelic acid and water, forming L-proline, ascorbic acid and water, and forming L-proline and glycollic acid / lactic acid; the method comprises the following steps: adding nitrogen-containing fuel oil and an acidic natural eutectic solvent into a reactor according to a certain mass ratio, and stirring at a certain temperature; standing and layering to obtain an upper-layer low-nitrogen oil product phase and a lower-layer nitrogen-rich eutectic solvent phase; and performing back extraction on the lower nitrogen-rich eutectic solvent phase to obtain a nitride-containing organic phase and a eutectic solvent phase, and performing reduced pressure distillation after liquid separation to obtain a nitrogen-containing compound and a regenerated eutectic solvent. The acidic natural eutectic solvent disclosed by the invention is simple in preparation process, easily available in raw materials, low in price, green and non-toxic, capable of efficiently removing alkaline and neutral nitrogen compounds in fuel oil at the same time, and excellent in cycle performance.

A plant and a purification process for the removal of metals, halogens and heteroatoms from oil made by pyrolysis or thermochemical conversion, for example of waste plastics, comprises at least the first two of the following steps: treating (4) the pyrolysis oil with an inorganic or organic acid or a combination thereof; washing (5) with a solvent, followed by separation of the pyrolysis oil from a contaminant laden solvent fraction; adding acid followed by a two-step bleaching earth process comprising a wet vacuum bleaching (16) step followed by a dry vacuum bleaching step (20); removing (24) the bleaching earths from the pyrolysis oil; and contacting the oil with an ion exchange material (27, 28). All these steps may be used in succession.

An acid medium is provided comprising one or more water-soluble oxidized disulfide oil ODSO compounds. The use of such an acid medium is disclosed as a replacement for conventional acids. Embodiments of the present disclosure are directed to an ODSO acid or ODSO acid mixture medium comprising, consisting of or consisting essentially of one or more polar water-soluble ODSO compounds, including polar water-soluble ODSO compounds present in an effluent refinery hydrocarbon stream recovered following catalytic oxidation of mercaptans present in a petroleum feedstream.

The present invention relates to a method for providing a bio-oil from biomass, wherein the method comprises the steps of: - adding a biomass with a lignin content of from 0 to 40 wt%; - adding a non-aqueous fluid; - adding a base comprising potassium ions; - subjecting the mixture to thermal treatment at a temperature of from 100 °C to 320 °C to obtain a liquid comprising bio-oil; - adding an acid to precipitate salts; - subjecting the liquid comprising bio-oil to a temperature of from 10 °C to 320 °C to obtain a mixture comprising an aqueous phase and a bio-oil; and - removing the aqueous phase from the mixture to obtain a demetallized bio-oil; - whereby the demetallized bio-oil obtained has a total metal content of less than 200 ppm, and a total phosphorus content of less than 10 ppm.

This invention relates to a method for purifying crude pyrolysis products, the method comprising the following steps: A1) providing crude pyrolysis products containing hydrocarbons and impurities, the crude pyrolysis products being obtained at least partially through the pyrolysis of plastic waste; A2) contacting the crude pyrolysis products with an alkali metal hydroxide in a continuous mode at a temperature of 330°C to 400°C, preferably 340°C to 360°C, for a residence time of less than 10 min, to obtain a treated pyrolysis product and a residue containing reaction impurities; A3) washing the treated pyrolysis products with a polar washing solvent to obtain a purified pyrolysis product and a polar washing solvent phase; A4) separating the polar washing solvent phase and the purified pyrolysis product.

Methods for converting renewable feedstock containing refractory nitrogen to hydrocarbon fuels such as renewable diesel and jet fuel. The method may include pretreating a lipid feedstock with refractory and non-refractory nitrogen compounds to produce a pretreated lipid. The pretreated lipid is processed through a hydroprocessing reactor system comprising hydrodeoxygenation and a hydropolishing catalyst beds. Effluent from the hydroprocessing reactor system comprises a paraffinic hydrocarbon and water vapor. The water vapor and the paraffinic hydrocarbon are separated to provide a paraffinic hydrocarbon with residual refractory nitrogen and liquid water with low turbidity and a low Biological Oxygen Demand (BOD) value. The paraffinic hydrocarbon is subsequently subjected to hydroisomerization to produce an isoparaffinic hydrocarbon effluent for fractionation into a naphtha fraction and a renewable diesel fraction and / or a jet fuel fraction.

H from Stream 2 1. A method for removing S, comprising adding a silica nanoparticle composition, and optionally a triazine, wherein the stream is an oil stream, a gas stream, a CO 2 point source purification streams, and geothermal energy system streams.

An acid medium is provided comprising one or more water-soluble oxidized disulfide oil ODSO compounds, and uses thereof. The use of such an acid medium is disclosed as a replacement for conventional acids. Embodiments of the present disclosure are directed to the use of an ODSO acid or ODSO acid mixture medium having one or more polar water-soluble ODSO compounds, including polar water-soluble ODSO compounds present in an effluent refinery hydrocarbon stream recovered following catalytic oxidation of mercaptans present in a petroleum feedstream.

In an aspect, a method is disclosed that includes contacting a composition with an aqueous solution to yield a mixture, where the composition includes one or more of animal fats, animal oils, plant fats, plant oils, vegetable fats, vegetable oils, greases, and used cooking oil, about 5 wt.% or more of free fatty acids, about 10 wppm or more of total metals, about 8 wppm or more phosphorus, about 20 wppm or more of nitrogen, and the aqueous solution includes ((NH4)2H2EDTA, (NH4)4EDTA, a monoammonium salt of diethylenetriaminepentaacetic acid, a diammonium salt of diethylenetriaminepentaacetic acid, a triammonium salt of diethylenetriaminepentaacetic acid, a tetraammonium salt of diethylenetriaminepentaacetic acid, (NH4)5DTPA, a combination of citric acid and Na4EDTA, a combination of citric acid and Na2H2EDTA, a combination of citric acid and a monosodium salt of diethylenetriaminepentaacetic acid, a combination of citric acid and a disodium salt of diethylenetriaminepentaacetic acid, a combination of citric acid and a trisodium salt of diethylenetriaminepentaacetic acid, a combination of citric acid and a tetrasodium salt of diethylenetriaminepentaacetic acid, a combination of citric acid and NasDTPA, or a combination of any two or more thereof, where the method further includes centrifuging the mixture to yield a first treated composition, wherein the first treated composition has less total metals and less phosphorus than the composition.

Disclosed herein is Method for selective oxidative desulfurization in oil and product thereof, which belongs to the field of energy and chemical engineering. This method operates in a polar phase composed of water and acetonitrile, through the direct oxidation of peroxide organic acids and the activation of the catalyst on the peroxide organic acids to produce active substances, for the selective removal of organic sulfides in the non-polar phase oil solution. In the polar phase, peroxide acetic acid is used as the oxidant, and low-valent transition metals are used as catalysts to activate peroxide acetic acid to produce active substances to achieve the oxidation and removal of organic sulfur in the non-polar phase.

The invention discloses a method for reducing viscosity of carbon black raw oil, which comprises the following steps: premixing a viscosity reducer A and a viscosity reducer B, adding into the carbon black raw oil, stirring and reacting for a period of time at a certain temperature, and crushing the mixture in an ultrasonic crusher. The viscosity of the carbon black raw oil is reduced by adopting the compound viscosity reducer, so that the viscosity reduction effect is more remarkable, the viscosity reduction rate of the carbon black raw oil can be up to 90% or above, and the problem of difficulty in transmission and processing caused by over-high viscosity of the carbon black raw oil is solved.

The invention relates to a method for treating a hydrocarbon stream (1) containing phosphorus (P), comprising the steps of:-providing a hydrocarbon stream (1); -separating a P-rich fraction (9) from the hydrocarbon stream (1), wherein the P-rich fraction (9) has a lower boiling range limit of at least 350 DEG C and a P content of at least 10 ppm; -treating the P-rich fraction (9) in a fluid catalytic cracking (FCC) unit (20).

To provide a method for purifying a flow of synthetic crude oil.SOLUTION: A method for purifying a flow of synthetic crude oil includes a step of supplying a flow of synthetic crude oil, a step of cleaning the flow of the synthetic crude oil with first water-soluble cleaning liquid at a first temperature, so as to obtain a flow of first purified synthetic crude oil, and a step of cleaning the flow of the first purified synthetic crude oil with second water-soluble cleaning liquid at a second temperature, so as to obtain a flow of second purified synthetic crude oil, wherein the first water-soluble cleaning liquid is basic, the second water-soluble cleaning liquid is acid, and the second temperature is lower than the first temperature. A method for producing synthetic crude oil includes a step of producing a flow (1) of synthetic crude oil by depolymerization of, preferably, a synthetic resin material, particularly, a synthetic resin waste, and a step of purifying the flow (1) of the synthetic crude oil according to the method of the present invention.SELECTED DRAWING: Figure 1

Disclosed herein is A process for producing levoglucosenone and / or chloromethylfurfural from biomass comprising cellulosic and / or hemicellulosic material, the process comprising subjecting the biomass to a first thermal treatment at a temperature of from about 200 °C to about 275 °C to form torrefied biomass and torrefaction gas; and subjecting the torrefied biomass to a second thermal treatment at a temperature of from about 300 °C to about 350 °C in the presence of an inorganic acid to form a pyrolysis gas comprising levoglucosenone and / or chloromethylfurfural.

A method for purifying a composition having a plastic liquefaction oil, wherein (a) a composition of a plastic liquefaction oil is provided, then (b) washed with a first aqueous solution to obtain an organic phase containing the washed composition and a first aqueous effluent, then (c) the organic phase of step (b) is treated in the presence of a basic compound at a temperature of at most 450° C. to obtain an organic effluent comprising a treated composition, and (d) the organic effluent of step (c) is washed with a second aqueous solution to obtain a purified composition having a reduced heteroatom content, and a second aqueous effluent. Furthermore, in step (b), the first aqueous effluent is returned in whole or in part to step (d), and / or in step (d), the second aqueous effluent is returned in whole or in part to step (b).

The invention relates to a process for obtaining heteroatom-containing monomers during the pyrolysis of polymer-containing starting materials, the process comprising: providing a starting material (30) comprising at least one heteroatom-containing polymer, introducing the starting material into a pyrolysis reactor (16), pyrolyzing the starting material (30) in the pyrolysis reactor (16), wherein at least the heteroatom-containing polymer is pyrolytically cleaved, and wherein a product gas comprising heteroatom-containing monomers (M) is obtained, spray-cooling the product gas, wherein the product gas already contains a polar solvent before spray-cooling, and / or wherein a polar solvent is added to the product gas during spray-cooling, wherein a multiphase product liquid (32) is obtained by spray-cooling, comprising a polar liquid phase (34) and a nonpolar liquid phase (36).wherein the heteroatom-containing monomers (M) and the polar solvent are enriched in the polar liquid phase, and separation of the polar liquid phase (34) from the nonpolar liquid phase (36).

The invention relates to a method for treating a silicon (Si)-containing hydrocarbon stream (1), comprising the steps of:-providing a hydrocarbon stream (1); -removing a Si-rich fraction (24) from the hydrocarbon stream (1), wherein the Si-rich fraction (24) has a lower boiling range limit of at least 120 DEG C and a Si content of at least 10 ppm; -treating the Si-rich fraction (24) in a fluid catalytic cracking (FCC) unit (20).

The invention relates to a method for purifying a composition comprising a plastic liquefaction oil, wherein: (a) a plastic liquefaction oil composition is supplied, then (b) washed with a first aqueous solution to obtain an organic phase containing the washed composition and a first aqueous effluent, then (c) the organic phase from step (b) is treated in the presence of a basic compound at a temperature of not more than 450°C to obtain an organic effluent comprising a treated composition, and (d) the organic effluent from step (c) is washed with a second aqueous solution to obtain a purified composition having a reduced heteroatom content, and a second aqueous effluent. Furthermore, in step (b), the first aqueous effluent is returned in whole or in part to step (d), and / or in step (d), the second aqueous effluent is returned in whole or in part to step (b). Abstract figure: Fig. 1