89 results about "Pyrolysis oil" patented technology

The application discloses a catalytic combustion heater principle prototype, which comprises an air tank, a methane tank, a mixed gas tank and a combustion chamber, the air tank is connected with the mixed gas tank through a connecting pipeline, the gas outlet of the mixed gas tank is connected with the methane tank and the combustion chamber through two connecting pipelines respectively, the top of the combustion chamber is provided with a mixed gas inlet, and a blower is arranged outside the combustion chamber, the application simulates the operation state of the underground catalytic combustion heater, high-temperature tail gas released by catalytic combustion mixed gas is used for heating oil shale layers, so that the oil shale is pyrolyzed to obtain the purpose of exploiting oil and gas, the simulation reference result of the experimental prototype can be understood as the actual operation result, the application not only reduces the exploitation cost of the oil shale in-situ conversion exploitation, but also improves the oil and gas exploitation efficiency, reduces the exploitation cost and reduces the harm of the toxic tail gas generated by incomplete combustion to animals, plants and the environment caused by direct release of the toxic tail gas into the atmosphere.

The embodiment relates to a polishing pad that comprises a polishing layer. When pyrolysis oil obtained from the polishing pad is analyzed according to the KS M 2457 standard, the content of chlorine components is 13,000 mg / kg or more. The pyrolysis oil can be used as a high-quality heat source through a refining process. Accordingly, the embodiment can contribute to improving environmental problems while increasing the recycling rate of polishing pads.

A method for producing a higher alcohol from a waste plastic feedstock is disclosed, comprising: (a) providing a hydrocarbon feed stream comprising a pyrolysis oil feed obtained from pyrolysis of plastic waste, wherein the pyrolysis oil comprises at least 20 wt % higher olefins with a carbon number in the range C5-C20, based on its total hydrocarbon content; (b) contacting the hydrocarbon feed stream with synthesis gas under hydroformylation conditions in the presence of a hydroformylation catalyst and recovering a hydroformylation product; (c) subjecting the hydroformylation product to hydrogenation and / or a distillation to recover a higher alcohol product.

The invention relates to a method for producing a label-free aromatic process oil from a pyrolysis oil from used tires. The method has the steps of distilling the pyrolysis oil from used tires in a fractional distillation process, wherein at least one low-boiling fraction, at least one high-boiling fraction, and optionally an atmospheric residue are obtained; and selectively hydrogenating the at least one high-boiling fraction or the atmospheric residue with hydrogen, a label-free aromatic process oil being obtained. The invention further relates to a label-free aromatic process oil and to the use of the process oil in tires or rubber mixtures.

The present application relates to low rank coal / biomass energy clean, efficient, cascade polygeneration technology field, and relates to a kind of pulverous low rank coal / biomass rapid pyrolysis device and process, including pyrolysis reactor, the shell of pyrolysis reactor is composed of cylinder and cone, cylinder and cone are integrally formed in upper and lower, both sides of cylinder top end are equipped with feed inlet, feed inlet is tangent to cylinder;Cylinder top center is equipped with upper exhaust pipe;Tapered middle lower part is equipped with stop piece, the upper part of stop piece is conical, the lower part is cylindrical shell and bottom is empty, tapered lower end is welded with discharge pipe, the lower part of stop piece is equipped with lower exhaust pipe, discharge pipe and lower exhaust pipe are coaxial, the cylinder, cone, discharge pipe, upper exhaust pipe and lower exhaust pipe are coaxial, the lower part of discharge pipe is connected with expansion bin, overflow port is equipped on the side of expansion bin.The above structural members cooperate with each other, build the reactor of centrifugal force field and gas cyclone combination, realize the rapid heating of granular raw material while effectively removing the dust in pyrolysis oil gas.

The present invention relates to a process for pyrolyzing a polyolefin recovered from a solid material M containing said polyolefin, a production unit for carrying out said process, a pyrolysis oil obtainable or obtained by said process and a use of said pyrolysis oil.

1. The name of the design product: mixed suction type household garbage pyrolysis gasification furnace. 2. The use of the design product: for pyrolysis gasification of household garbage, and recycling of pyrolysis oil gas produced in the process of pyrolysis gasification for energy supply. 3. The design points of the design product: the overall shape of the design product. 4. The picture or photo that best indicates the design points: perspective view. 5. Omit the view: the upside down view is not easy to see when in use, omit the upside down view.

This invention relates to the field of waste plastic chemical recycling technology, and discloses a waste plastic pyrolysis system and method. The method includes the following steps: (1) deoxygenating waste plastic particles; (2) mixing the waste plastic particles obtained after the deoxygenation treatment with diesel fraction under anaerobic conditions, and then separating the diesel fraction in the resulting mixture to obtain preliminary liquefied plastic; (3) mixing the preliminary liquefied plastic with wax oil fraction under anaerobic conditions, and then separating the wax oil fraction in the resulting mixture to obtain waste plastic liquefied liquid; (4) subjecting the waste plastic liquefied liquid to a viscosity reduction reaction to obtain viscous liquid plastic; (5) heating the viscous liquid plastic and subjecting it to a pyrolysis reaction to generate pyrolysis oil and gas and pyrolysis residue; (6) fractionating the pyrolysis oil and gas to separate rich gas, diesel fraction, wax oil fraction and circulating oil. This invention achieves efficient liquefaction and generates high-value-added products.

The utility model discloses a tunnel kiln car for pyrolyzing large-size fan blades, which comprises a kiln car main body, a plurality of groups of steel clamping mechanisms are arranged on the kiln car main body, the kiln car main body comprises a single-layer steel frame, a double-layer composite heat-insulating layer is paved on the single-layer steel frame, a refractory slab is paved on the double-layer composite heat-insulating layer, and the refractory slab is arranged on the single-layer steel frame. According to the device, an adjusting screw rod is rotated by rotating a knob, the adjusting screw rod rotates to drive an adjusting block to move up and down, the adjusting block drives a clamping arm to move up and down, the clamping arm is clamped on the adjusting screw rod, the clamping arm is clamped on the adjusting screw rod, the clamping arm is clamped on the clamping arm, and the clamping arm is clamped on the clamping arm. Therefore, fan blades with different sizes can be clamped.

The present invention concerns a method for processing a plastic pyrolysis oil, comprising: a) a step of selective hydrogenation of the feedstock in the presence of hydrogen and at least one selective hydrogenation catalyst, at a temperature between 100 and 150°C, a partial pressure of hydrogen between 1.0 and 10.0 MPa absolute and an hourly space velocity between 1.0 and 10.0 h-1, in order to obtain a hydrogen effluent; b) a step of hydroprocessing said hydrogen effluent in the presence of hydrogen and at least one hydroprocessing catalyst, at a temperature between 250 and 370°C, a partial pressure of hydrogen between 1.0 and 10.0 MPa absolute and an hourly space velocity between 0.1 and 10.0 h-1, in order to obtain a hydroprocessing effluent; c) a step of separating the hydroprocessing effluent originating from step b) in the presence of an aqueous flow, said step being performed at a temperature between 50 and 370°C, in order to obtain at least one gaseous effluent, one aqueous liquid effluent and one hydrocarbon liquid effluent.

This utility model discloses an integrated system for hydrogen production from bio-waste pyrolysis and catalytic reforming. It includes a pretreatment module, a feed hopper, a pyrolysis reactor, a post-reformer, and a gas purification module connected in sequence. The pressure, temperature, and oxygen content are monitored and controlled in real time by a control module. The pretreatment module dehydrates and crushes the bio-waste. The feed hopper stores the bio-waste and discharges it into the pyrolysis reactor. The pyrolysis reactor has multiple heating sections for gradient pyrolysis of the bio-waste into biochar and pyrolysis steam in an anaerobic environment. The post-reformer is filled with a catalyst and catalytically reforms the pyrolysis steam to generate hydrogen-rich syngas, which is then discharged into the gas purification module. The gas purification module purifies the hydrogen-rich syngas to obtain pure hydrogen and pyrolysis oil. This system has a simple and compact structure, small footprint, and high thermal efficiency, providing an efficient solution for the resource utilization of bio-waste.

A pyrolysis method and system are provided that may utilize a recycled plastic feedstock that comprises various types of waste plastics or a feedstock that comprises various types of waste plastics and at least one crude post-industrial liquid waste. The disclosed pyrolysis method and system may be configured to convert various types of waste plastics, including post-customer and post-industrial wastes, and / or crude post-industrial liquid wastes into useful pyrolysis oils.

The invention relates to a composition comprising a pyrolysis oil and a polymeric additive for reducing the pour point, viscosity, or both, of the pyrolysis oil. The invention also relates to a method of manufacturing said composition and to the use of a polymeric additive for reducing the pour point, viscosity, or both, of the pyrolysis oil. Furthermore, the invention relates to a method for transporting or storing a pyrolysis oil.

A poly(vinyl acetal) composition, such as a poly(vinyl butyral) composition or resin, can be made containing recycle content by the use of a recycle content aldehyde composition as a feedstock to make the PVA or by application of a recycle allotment, such as an allocation or credit, applied to either the aldehyde composition or to the PVA composition. The recycle content is obtained by cracking a recycle content pyrolysis oil to make a variety of olefins, such as propylene or ethylene.

The application relates to the technical field of waste plastic recycling, and discloses a mixed plastic waste high-value recycling method based on pre-classification and sequential depolymerization. First, mixed plastic waste is crushed and dried, then wet flotation is carried out by using two solutions with different densities, and PET-rich material pieces, PS-rich material pieces and polyolefin-rich material pieces are separated. Subsequently, the PET-rich material pieces are subjected to catalytic alcoholysis to recycle high-purity bis-hydroxyethyl terephthalate monomers; the PS-rich material pieces are subjected to catalytic pyrolysis to recycle high-purity styrene monomers; and the polyolefin-rich material pieces and process residues are subjected to pyrolysis to be converted into pyrolysis oil. By the strategy of 'first separation and then treatment', high-selectivity and high-yield recovery of high-value components in complex mixed plastics is realized, the process route is clear, and the method is economic and environmentally friendly.

This invention discloses a method for preparing diesel fraction from waste tire pyrolysis oil via catalytic hydrogenation, and the resulting diesel fraction, belonging to the field of solid waste resource utilization and petroleum hydrorefining technology. This invention addresses the problems of high sulfur, nitrogen, and gum content in waste tire pyrolysis oil, easy catalyst deactivation in laboratory trials, difficulty in controlling the hydrogenation upgrading effect, and the inability of the product to consistently meet the China VI standard. The method first removes solid slag, heavy gum, and moisture through a stepped pretreatment process to obtain refined raw materials. Then, hydrogenation upgrading is completed in an intermittent high-pressure reactor using a pre-sulfurized hydrogenation catalyst. Finally, the target product is obtained through fractionation. This invention's process is compatible with conventional laboratory equipment, is safe and controllable, and the core indicators of the product diesel fraction fully comply with the China VI b automotive diesel standard.

This invention relates to a method and chemical apparatus for separating steam cracker feedstock from a liquid stream containing at least one type of plastic pyrolysis oil, preferably derived from plastic waste. The liquid stream is converted in a first hydrotreating step, and then a stream of organic compounds depleted of C-C double and / or C-C triple bonds is separated from the hydrotreated liquid stream and subjected to a second hydrotreating step to produce a steam cracker feedstock stream from the hydrotreated stream. The method and chemical apparatus according to the invention are suitable for avoiding undesirable polymerization and scaling.

The application provides a heat recovery method and device of a pyrolysis rotary furnace, and the heat recovery method comprises pyrolysis gas flow condensation: high-temperature pyrolysis gas flows out from a pyrolysis furnace, enters a high-temperature condenser after slag removal, is cooled by a light working medium, high-boiling-point pyrolysis oil components are condensed out, are collected and discharged into a high-boiling-point oil tank for storage, and meanwhile, medium-temperature pyrolysis gas is obtained; working medium circulation: the light working medium absorbs the heat of the high-temperature pyrolysis gas in the high-temperature condenser, evaporates water vapor and becomes a concentrated working medium which is discharged from the lower part of the condenser and returned to a medium absorber, during which, the concentrated and light liquid heat exchanger is used to transfer the heat of the working medium to the light working medium of the high-temperature condenser; the application of the mature technology is a derivative application of the absorption heat pump technology, the working principle is simple, the system route is safe, and the operation is stable.

Process and plant for producing hydrocarbon products from a solid renewable feed-stock, where in a thermal decomposition section such as a pyrolysis section for the treatment of the solid renewable feedstock, a pyrolysis off-gas stream and a pyrolysis oil stream are generated, and where after hydroprocessing of the pyrolysis oil in a hydroprocessing section, a hydrogen-rich stream and an off-gas stream comprising hydrocarbons are produced. A portion of the hydrogen-rich stream is used as a recycle gas stream in the hydroprocessing section for the production of said hydrocarbon products, such as naphtha and diesel, and another portion may be used for hydrogen production in a hydrogen producing unit, while the off-gas stream is used together with the pyrolysis off-stream in the hydrogen producing unit. The produced hydrogen, i.e. make-up hydrogen, is used in the hydroprocessing section.

A solvent stripping process has been developed for separating the pyrolysis oil in an extracted phase feed stream from an organic solvent used for extraction. The process involves using a stripping solvent to strip the organic solvent from the pyrolysis oil in a stripping column. The stripping column bottom stream comprising the pyrolysis oil and part of the stripping solvent can be separated into a vapor stream comprising the stripping solvent and a liquid stream comprising the pyrolysis and a portion of the stripping solvent. The stripping column overhead stream comprising the stripping solvent and the organic solvent can be separated in a recovery column into a recovery column overhead stream comprising the stripping solvent and a recovery column bottom stream comprising the organic solvent.

This invention discloses a process for selective dechlorination of cracked oil under hydrotreating, belonging to the field of heavy oil processing and refining technology. The process includes: pressurizing and heating the feedstock cracked oil to 250-350°C, mixing it with hydrogen, and then feeding it into a fixed-bed dechlorination reactor packed with a specific dechlorinating agent; the reaction is carried out under a pressure of 2.5-3.0 MPa, where organochlorides in the cracked oil are selectively converted and fixed onto the dechlorinating agent, while impurities such as organic sulfur and basic nitrogen do not undergo significant hydrogenation reactions. After cooling and gas-liquid separation, the reaction product yields dechlorinated cracked oil with a chlorine content of less than 10 μg / g, which can be directly used for subsequent hydrorefining. This invention solves the problem of organochlorine removal before hydrorefining of cracked oil. Through selective dechlorination, it avoids equipment corrosion problems caused by hydrogen chloride generation in subsequent processes, while reducing ineffective hydrogen consumption. The process is simple and economical.

Provided here are methods and systems for converting mixed plastic waste into pyrolysis oil with a filtration unit integrated upstream of one or more reactors. A method provided herein includes depolymerizing a polyolefin feed stream to produce a molten oligomer stream and a chlorine-rich gas stream and dechlorinating the molten oligomer stream to produce a dechlorinated molten oligomer stream and a chlorine-rich fluid stream. The method includes filtering the dechlorinated molten oligomer stream through a heated melt filter to produce a filtered molten oligomer stream and a solid residue. The method includes thermally cracking the filtered molten oligomer stream to produce a cracked product stream, distilling at least a portion of the cracked product stream to produce a pyrolysis oil product stream having a final boiling point of about 350 degrees Celsius (°C) or less and a heavy distillate stream, and supplying the pyrolysis oil product stream for steam cracking.

A process for producing monomers is disclosed. The process comprises hydrocracking a pyrolysis oil stream in a hydrocracking reactor over a hydrocracking catalyst in the presence of a hydrocracking hydrogen stream at hydrocracking conditions to open rings present in said pyrolysis oil stream to produce a hydrocracked effluent stream. The hydrocracked effluent stream is fractionating in a fractionation column to provide a naphtha stream. The naphtha stream is contacted with a NEP catalyst and hydrogen to produce a light paraffinic stream or with a reforming catalyst to produce an aromatics stream.

This document provides systems and methods for limiting gum formation in pyrolysis oils and removing gum impurities from pyrolysis oils during storage and / or transportation, as well as improved techniques for removing gum deposits from the inner surfaces of sealed containers during storage and / or transportation. One such method includes loading a sealed container with a dispersant, which is a polar surfactant immiscible with the pyrolysis oil. The steps include contacting the pyrolysis oil with the dispersant inside the sealed container to produce a stabilized pyrolysis oil and form water-dispersible gum deposits on the inner surface of the sealed container. In some examples, after removing the stabilized pyrolysis oil from the sealed container, the step includes applying an aqueous fluid to the inner surface of the sealed container to disperse and remove the water-dispersible gum deposits from the inner surface of the sealed container.

This invention discloses an experimental apparatus for separating and purifying biomass pyrolysis oil, belonging to the technical field of pyrolysis oil purification experiments. The apparatus includes a support frame, with the waste inlet located at the crest of a wavy surface. An oscillating tensile peeling component is installed inside the support frame to provide periodic shear force, causing velocity differences and stratification tendencies in biomass pyrolysis oil components with varying flow rates. By employing an oscillating tensile peeling component combined with the wavy curved surface structure of the tank's inner wall, this invention achieves a composite output of rotation and axial reciprocating motion under a single drive source. It constructs a dynamically variable gap high-frequency shear flow field and a periodic tensile peeling force field inside the tank, enabling efficient and continuous separation of light and heavy components in biomass pyrolysis oil without additional auxiliary devices. This effectively solves the problems of low separation efficiency, poor purification effect, high energy consumption, or secondary pollution associated with traditional separation methods.

Process for the treatment of a feedstock comprising a fraction of plastic and / or tyre and / or solid recovered fuel pyrolysis oil and a heavy fraction of hydrocarbons of fossil origin, said fraction of pyrolysis oil constituting less than 50% by weight of said feedstock, said process comprising:a) a hydrodemetallization stage in a fixed bed reaction section comprising at least two permutable reactors which is fed at least by said feedstock and a gas stream comprising hydrogen, in the presence of a hydrodemetallization catalyst,b) a hydrotreating stage in a reaction section comprising at least one fixed bed reactor, said section being fed by said effluent resulting from stage a) and optionally a gas stream comprising hydrogen, in the presence of a hydrotreating catalyst,c) a stage of separation of the effluent resulting from stage b).

This invention relates to a method and chemical apparatus for separating benzene from a liquid stream containing at least one pyrolysis oil manufactured from plastic waste and further converting said benzene into cyclohexanone. Cyclohexanone is suitable as a precursor for azircycloheptane-2-one (ε-caprolactam) and adipic acid (at least a portion of which is based on benzene manufactured from plastic waste). Furthermore, polyamide-6 and polyamide-66 can be manufactured by the method according to the invention.

This utility model discloses an oily sludge recycling and treatment device, including a heating furnace heated by a burner structure. The upper end of the heating furnace is connected to a water washing tower via a first pipe. The water washing tower is connected to a post-treatment structure. An oil-water separator is connected below the water washing tower, and a heat exchange box is located below the oil-water separator. The heat exchange box has a jacket on its outer wall, and the oil-water separator is connected to the jacket. There are two sets of heat exchange boxes, with the jackets of the two heat exchange boxes used to hold the aqueous phase and the oil phase, respectively. An outlet is located below the jacket. The burner structure is connected to a desulfurization tower, and a spray structure is installed inside the desulfurization tower. The spray structure is connected to a slurry tank, and the heat exchange box is also connected to the slurry tank. This utility model improves the recycling and treatment effect of oily sludge by washing the oil and water in the pyrolysis oil and gas and then recovering the waste oil. On the other hand, the heat exchange between the washed oil and water and the desulfurization slurry accelerates the cooling rate of the oil and water, improving its recycling efficiency.

The present invention relates to a composition comprising pyrolysis oil and a polymer additive for reducing the pour point, the viscosity, or both the pour point and the viscosity of the pyrolysis oil. The present invention further relates to a method of manufacturing said composition, the use of a polymer additive for reducing the pour point, the viscosity, or both the pour point and the viscosity of the pyrolysis oil. The present invention further relates to a method of transporting or storing pyrolysis oil.