174results about "Coking carbonaceous materials" patented technology

The invention relates to the technical field of heavy oil product treatment, in particular to a method and device for co-production of a carbon material through molten salt pyrolysis of a liquid oil product, and the method comprises the following steps: the liquid heavy oil product is put into an electric heating molten salt reactor through a continuous feeding system, and the molten salt reactor is filled with a molten alkaline molten salt medium; carrying out catalytic pyrolysis reaction on the oil product in a liquid phase environment of the molten salt medium, wherein the oil product stays in the molten salt for 5-10 seconds; the liquid oil product is uniformly cracked in the liquid phase of the molten salt to generate low-carbon hydrocarbon gas, hydrogen and dispersed fine carbon particles, and the carbon particles suspend on the surface under the buoyancy action of the molten salt and are not deposited and gathered; suspended carbon particles are collected from the surface of the fused salt in real time through a mechanical push rod continuous collection system; according to the method, continuous and stable pyrolysis of the heavy oil product and efficient and continuous separation of the product can be realized in the liquid-phase molten salt environment, the production efficiency is improved, and the stability of the product quality is ensured.

Systems and methods are provided for co-processing plastic waste in a coker as part of an integrated refinery environment that produces kerosene, jet fuel, and / or jet fuel blending components as a product. The co-processing can be performed in a fluidized coker, a delayed coker, or a combination of fluidized cokers and delayed cokers. After coking, hydroprocessing can be performed on one or more portions of the coker effluent that contribute to formation of the kerosene, jet fuel, and / or jet fuel blending component product(s). The hydroprocessing can be used to reduce or minimize the presence of unexpected nitrogen contaminants in the resulting kerosene, jet fuel, and / or jet fuel blending component product(s).

The invention provides a high-performance negative electrode coke production process, and belongs to the technical field of negative electrode material production processes, and the high-performance negative electrode coke production process comprises the following steps: mixing solvent oil and maltha raw materials according to a solvent ratio of 0.9-1.2: 1, mixing the solvent oil and the maltha raw materials, carrying out settling separation through a settling tank to produce light-phase oil, heating the light-phase oil through a heating furnace, and feeding the light-phase oil into a light-phase tower, refined asphalt is produced from the tower bottom; heating the refined asphalt, fractionating in a fractionating tower, and producing coker oil from the bottom of the fractionating tower; the method comprises the following steps: heating coking oil, feeding the heated coking oil into a coke tower, and carrying out variable-temperature variable-pressure operation in a coking process to generate high-performance negative coke; by strictly controlling the solvent ratio and the ester-aromatic ratio, QI in the raw material can be efficiently removed, it is ensured that the QI content of the obtained refined asphalt is not larger than 0.1%, the softening point is controlled to be 35-50 DEG C, the heating furnace outlet temperature, the coke tower top pressure, the recycle ratio and the total feeding time are accurately controlled, variable-temperature and variable-pressure operation is implemented, and the optimal mesophase development environment is constructed; the grinding, graphitization and electricity storage properties of the negative electrode coke are improved.

The invention discloses an oil-containing solid waste and plastic co-pyrolysis method based on carbon residue in-situ catalysis, and belongs to the technical field of solid waste resource utilization. The method comprises the following steps: pre-treating and mixing oil-containing solid waste and waste plastic, and co-pyrolyzing to prepare primary carbon residue and pyrolysis steam; performing acid dipping or oxidation modification on the primary carbon residue to obtain modified carbon residue, performing in-situ catalytic reforming on the pyrolysis steam and the modified carbon residue under the condition that the temperature is not lower than the final pyrolysis temperature, performing fractional condensation separation on a product to obtain pyrolytic oil and hydrogen-rich gas, and performing high-valued preparation on a functional material from the secondary residue. According to the method, the problems that a catalyst needs to be additionally added and the product quality is low in the existing co-pyrolysis technology are solved. No additional catalyst is needed in the whole process, the process cost is reduced, and related secondary pollution of the catalyst is avoided; product quality improvement is effectively achieved, two kinds of solid waste are treated synchronously, and remarkable environmental protection and economic and social benefits are achieved.

A method / system, which can be modified from the Flexicoking™ process / system, includes introducing a heavy petroleum feed into a fluidized bed in a reactor and converting the feed via a coking operation within the fluidized bed, producing an overhead stream with entrained coke fines from the reactor overhead and solid coke from the base of the reactor. The method includes injecting the solid coke into a fluidized bed in a burner and combusting the solid coke in the burner, producing hot coke particles. The method includes recirculating a portion of the hot coke particles to the fluidized bed in the reactor, discharging the remainder of the hot coke particles from the base of the burner and a flue gas from the burner overhead, and passing the flue gas and a caustic dispersion to a venturi scrubber to obtain a scrubbed flue gas. More petroleum coke can be produced from the method / system.

A process includes receiving, in an unheated coke drum, a feedstock comprising a solid carbon-based material, heating the unheated coke drum and the feedstock comprising the solid carbon-based material to a first temperature to form a heated feedstock comprising the solid carbon-based material in a semi-solid state or a melted state in a heated coke drum, and processing the heated feedstock comprising the solid carbon-based material in the semi-solid state or the melted state in the heated coke drum with a heated petroleum residue-containing feedstock at a second temperature and under reaction conditions to convert at least a portion of the heated feedstock comprising the solid carbon-based material in the semi-solid state or the melted state to a product stream including a gas phase including hydrocarbons and hydrogen, and coke.

The invention belongs to the field of preparation of high-end carbon materials, and relates to a method for desulfurizing high-sulfur petroleum coke. The core of the invention is to construct a'desulfurization-acidification-regeneration 'three-step closed cycle system. The system takes magnesium oxide as a circulating medium, firstly magnesium oxide reacts with sulfur in petroleum coke at a high temperature to be converted into magnesium sulfide, then sulfur is released and recovered through an acidification step, meanwhile magnesium is converted into an intermediate product magnesium hydroxide, and finally, the magnesium medium is recovered to be active through a thermal regeneration step, magnesium oxide is obtained, and circulation is completed.

The invention relates to a method for obtaining hydrocarbon fluids from a fossil heavy hydrocarbon feedstock and a tyre oil, the method comprising: a) a step of providing a tyre oil or at least one fraction of a tyre oil; b) a step of thermal cracking in a visbreaking unit or a coking unit, during which the fossil heavy hydrocarbon feedstock, or a fraction of the heavy fraction of the fossil heavy hydrocarbon feedstock, is subjected to thermal cracking under visbreaking or coking conditions in the presence of tyre oil or the at least one tyre-oil fraction provided in step a), thereby producing an at least partially cracked effluent and a liquid or solid residue; c) a fractionation step in which the effluent from step b) is fractionated into at least one liquid hydrocarbon fraction.

This invention belongs to the field of coal tar technology and relates to a multi-stage fractional processing and utilization process for medium- and low-temperature coal tar, comprising the following steps: 1) Medium- and low-temperature coal tar is distilled under atmospheric pressure to separate light coal tar and heavy coal tar; 2) Crude naphthalene, crude anthracene, crude fluorene, and residual light oil components are separated from the light coal tar by distillation; then, refined naphthalene, refined fluorene, refined anthracene, phenol, cresol, xylenol, and diesel oil are obtained respectively; 3) Heavy coal tar and diesel oil are co-carbonized and thermally polymerized to obtain refined pitch and coking oil. The refined pitch is processed using a three-stage variable-speed heating and pressure process to obtain semi-coke; then, it is calcined and cooled to obtain needle-shaped coke powder, and the coking oil is returned to produce diesel oil. This invention provides a multi-stage fractional processing and utilization process for medium- and low-temperature coal tar, which greatly improves and enhances product performance, fully utilizes raw materials, avoids environmental pollution, and enables industrial application.

This invention discloses a method and system for the comprehensive utilization of catalytic oil slurry. The method first involves hydrogenating the catalytic oil slurry. The separated hydrogenated tail oil then undergoes a cracking reaction. The cracking products are treated with an extractant. After separation, the extract phase is processed by recovering the extractant to obtain aromatic oil. The heavy fraction obtained from the separation of the aromatic oil enters a coking reaction zone, where it reacts to yield oil gas and needle coke products. A comprehensive utilization system for catalytic oil slurry using the above method is also provided. The method and system of this invention can improve the mechanical strength of the obtained needle coke, effectively improve the microstructure of the needle coke, and obtain high-quality needle coke.

The invention discloses petroleum coke, a non-graphite carbon material, a negative electrode material and a preparation method thereof. The method comprises the following steps: performing first solid removal on a first heavy oil raw material to obtain first purified heavy oil; performing second solid removal on the second heavy oil raw material to obtain second purified heavy oil; mixing the second purified heavy oil with nano-porous carbon to obtain third purified heavy oil and heavy oil containing the nano-porous carbon; carrying out solid-liquid separation on the heavy oil containing the nano-porous carbon to obtain a non-graphite carbon material precursor and fourth purified heavy oil; mixing the third purified heavy oil, the fourth purified heavy oil and the first purified heavy oil to obtain heavy mixed oil; carrying out distillation, pyrolysis and modification treatment on the heavy mixed oil to obtain petroleum coke; carbonizing the non-graphite carbon material precursor to obtain a non-graphite carbon material; the negative electrode material is prepared from petroleum coke and a non-graphite carbon material. The petroleum coke and the non-graphite carbon material with relatively high quality are prepared, and the electrochemical performance of the negative electrode material can be improved.

The utility model relates to the technical field of needle coke granulating and coating, in particular to a needle coke granulating and coating system, which comprises an asphalt mixer, a mechanical fusion machine and a granulating and carbonizing machine, and is characterized in that the asphalt mixer, the mechanical fusion machine and the granulating and carbonizing machine are positioned in the same production workshop; the asphalt mixing machine, the mechanical fusion machine and the granulation carbonization machine are sequentially arranged on the same production line or the asphalt mixing machine, the mechanical fusion machine and the granulation carbonization machine are arranged in a triangular shape; wherein the distance between the asphalt mixing machine and the mechanical fusion machine is d1, the distance between the mechanical fusion machine and the granulation carbonization machine is d2, and at least one of d1 and d2 is not larger than 5 m.

The invention discloses a petroleum coke microstructure regulation and graphite negative electrode material and a preparation method thereof.The preparation method utilizes heavy oil containing polycyclic aromatic hydrocarbon to generate a petroleum coke and graphite negative electrode material, and comprises the steps that after impurities in the heavy oil are removed, a structure regulator is added under the ultrasonic action, and then upper-layer and lower-layer heavy oil is generated; the materials are respectively used as raw materials of petroleum coke and a negative electrode material. According to the method, the low-sulfur and low-nitrogen quality of petroleum coke can be achieved without complex raw material pretreatment, hydrogenation and other processes, the production cost is reduced, the method is easy to apply and popularize in common petrochemical companies, high-added-value utilization of heavy oil of the petroleum and petrochemical companies is achieved, and the method is suitable for industrial production. The high-performance preparation of petroleum coke and the overall improvement of the comprehensive performance of artificial graphite are realized.

Methods and systems for improving operation of a gasoline desulfurization system may include receiving gasoline blending pool data, the gasoline blending pool data indicative of one or more of a sulfur concentration, a current inventory, or an octane number of each current component of a gasoline blending pool. A machine learning model generates a light naphtha sulfur target for a light naphtha produced from a selective hydrogenation reactor of a gasoline desulfurization system based on the gasoline blending pool data and generates a heavy naphtha sulfur target for a desulfurized heavy naphtha produced from a hydrodesulfurization reactor of the gasoline desulfurization system based on the gasoline blending pool data. The machine learning model may be trained on historical data of the gasoline blending pool and historical data of operating parameters, resulting product attributes, and composition from the gasoline desulfurization system, including sulfur concentration and octane number.

The present invention relates to a process for needle coke production by co-processing coal tar pitch (CTP) with petroleum streams. The process utilizes a ‘multi-residence time mild thermal cracking’ of coal tar pitch with petroleum streams (CLO, PFO) followed by solvent-assisted selective separation of undesirable quinoline insoluble (QI) and solid catalyst fines from the mixed pitch and delayed coking thereafter to produce needle coke. The solvent employed for feedstock purification is a mixture prepared from an aromatic solvent which is a lighter fraction formed by mild and severe thermal cracking of mixed feedstock, an aliphatic solvent and a polar extraction solvent.

A computer-implemented method for predicting one or more parameters of calcinated coke produced by a coke production system includes acquiring data indicative of at least one of one or more feedstock properties, one or more coke heating properties, or one or more coke storage properties, inputting the acquired data into a coke predictive model, and providing by the coke predictive model one or more predicted coke parameters corresponding to a feedstock received by the coke production system and based on the acquired data.

The invention concerns a method for converting into hydrocarbon(s) a solid or liquid substrate (11) selected among substrates formed of plastics material and heavy oils, by a conversion reaction of hydrogenolysis and / or pyrolysis, occurring in a given temperature range. This method comprises contacting, in a reactor (10), the substrate (11) and a microscale heating element (12) formed of a ferromagnetic metal compound, under an oxygen-free atmosphere (23), and heating this heating element (12), at a temperature within said temperature range, by electromagnetic induction by means of a magnetic field inductor (18) external to the reactor (10).

Embodiments of systems and methods for operating a resid destruction unit include generating an input comprising target parameters and one or more sensor outputs from one or more sensors disposed in and / or proximate the resid destruction unit, one or more sample analyses from sample collection and analysis assemblies disposed in and / or proximate the resid destruction unit. A machine learning model may be applied to the input to generate an output comprising one or more predicted parameters. A machine learning model may be applied to the predicted parameters and the target parameters to generate an output indicative of operating conditions of the resid destruction unit achieve the target parameters. Related methods and systems are also disclosed.

Disclosed herein are methods and systems for removing hydrocarbon deposits or coking and minimizing fouling in coker furnaces. The method includes displacing at least one cleaning pig in a coker furnace tubing, introducing a displacement fluid into the coker furnace tubing after the at least one cleaning pig, introducing an inhibition composition into the coker furnace tubing after the displacement fluid, wherein the inhibition composition comprises a first organo sulfate compound with a divalent cation diluted in a hydrocarbon liquid, introducing a coker feed into the coker furnace tubing, and introducing a second organo sulfate compound with a divalent cation into the coker feed.

Systems and methods are provided for integrated coking and gasification of a biomass feed in a three-vessel fluidized coking system under co-processing conditions so that biomass is co-fed with a conventional and / or mineral coker feed, such as a feed containing resid or heavy crude oil. It has been discovered that co-processing of a biomass feed can unexpectedly increase the reaction rate for coking of the conventional / mineral coker feed. This unexpected increase in reaction rate can allow for modification of how the three-vessel fluidized coking reaction system is operated. The resulting modification in operating conditions can allow for production of a modified and / or improved product slate from the fluidized coker. The modifications in the product slate can include an increase in total liquid products as well as a decrease in micro carbon residue and / or n-heptane insolubles in the total liquid products.

A computer-implemented method for predicting one or more parameters of calcinated coke produced by a coke production system includes acquiring data indicative of at least one of one or more feedstock properties, one or more coke heating properties, or one or more coke storage properties, inputting the acquired data into a coke predictive model, and providing by the coke predictive model one or more predicted coke parameters corresponding to a feedstock received by the coke production system and based on the acquired data.

System for producing high-quality synthesis gas from household waste and carbon dioxide, characterized in that it comprises: a feeder (1), a dryer (2), a low-temperature pyrolysis reactor (3), a medium-temperature pyrolysis reactor (4) and a high-temperature pyrolysis reactor (5) connected in series; wherein the pyrolysis gas outlets of the low-temperature pyrolysis reactor (3) and the medium-temperature pyrolysis reactor (4) are successively connected to a dechlorination device (9) and a combustion chamber (8); wherein the flue gas outlet of the combustion chamber (8) is successively connected to the flue gas lines of the high-temperature pyrolysis reactor (5), the medium-temperature pyrolysis reactor (4) and the low-temperature pyrolysis reactor (3) as well as to the flue gas cleaner (10); The synthesis gas outlet of the high-temperature pyrolysis reactor (5) is successively connected to a heat exchanger (7) and a dryer (2).

The utility model relates to the field of pyrolysis equipment, in particular to a tar residue pyrolysis system for fuel preparation, which comprises a support, a feeding mechanism and a discharging mechanism are arranged on the support, the discharging mechanism is connected with a discharging pipe and an exhaust pipe, a rotating furnace is rotatably arranged between the feeding mechanism and the discharging mechanism, and a shell is sleeved on the outer side of the rotating furnace. An electric heating unit is arranged in the portion, below the rotary furnace, of the shell, a driving mechanism connected with the rotary furnace is arranged on the support, the feeding mechanism and the discharging mechanism are each provided with a vertically-extending telescopic rod, a cross beam is arranged between the two telescopic rods, and a scraping plate is arranged at the lower end of the cross beam. According to the utility model, the residue is reduced, so that the adverse effect on pyrolysis is reduced.

The invention relates to an integrated method for thermal conversion and indirect combustion of a heavy hydrocarbon feedstock in a redox chemical loop for producing hydrocarbon streams. The heavy hydrocarbon feedstock (1) is brought into contact with inert particles (2) in a thermal conversion zone (100). Thermal conversion in the absence of hydrogen, water vapour and a catalyst produces a first gaseous effluent of hydrocarbon compounds (4) and coke, which effluent is deposited on the inert particles (5). The latter is then burned in a redox chemical loop (200) in the presence of oxygen-carrying solid particles (6). The inert particles thus flow between the thermal conversion zone (100) and a reduction zone (300) of the chemical loop while the oxygen-carrying solid particles flow between the oxidation (400) and reduction zones (300) of the chemical loop.

Disclosed herein are methods and systems for removing hydrocarbon deposits or coking and minimizing fouling in coker furnaces. The method includes displacing at least one cleaning pig in a coker furnace tubing, introducing a displacement fluid into the coker furnace tubing after the at least one cleaning pig, introducing an inhibition composition into the coker furnace tubing after the displacement fluid, wherein the inhibition composition comprises a first organo sulfate compound with a divalent cation diluted in a hydrocarbon liquid, introducing a coker feed into the coker furnace tubing, and introducing a second organo sulfate compound with a divalent cation into the coker feed.

The invention relates to the technical field of isotropic coke preparation, in particular to isotropic coke and a preparation method thereof. The method comprises the following steps: (1) performing pressurized polycondensation reaction on petroleum-based heavy aromatic oil to obtain modified heavy aromatic oil containing mesophase microspheres; (2) mixing the modified heavy aromatic oil with a dispersing solvent, and settling to obtain a solvent insoluble substance; (3) carrying out coking treatment on the solvent insoluble substance to obtain green coke; and (4) calcining the green coke to obtain the isotropic coke. According to the method for preparing the isotropic coke, provided by the invention, the isotropic coke with a more uniform and fine microstructure, higher isotropy and lower impurity content can be prepared by taking the petroleum-based heavy aromatic oil as a raw material.

The application provides a method for improving the electric performance of needle coke, which comprises adding condensed aromatic hydrocarbon compounds during the coking reaction of coking raw materials, continuously performing the coking reaction, and obtaining needle coke products. The method is simple to operate, and the needle coke obtained by the method has excellent electric performance.

The invention relates to a coated catalyst as well as a preparation method and application thereof. The catalyst comprises a core-layer catalyst and a SiO2 layer coated on the surface of the core-layer catalyst, the core-layer catalyst comprises an alumina carrier as well as an active component and an auxiliary component which are loaded on the alumina carrier; the auxiliary agent component comprises alkali metal and / or alkaline earth metal; the active component comprises at least one group VIB metal; the content of the group VIB metal is 8-25wt% in terms of oxide and on the basis of the total weight of the core-layer catalyst. According to the invention, tetracyclic aromatic hydrocarbon is limited from entering the core layer catalyst by using the screening function of the SiO2 layer, so that the retention rate of tetracyclic aromatic hydrocarbon is improved while the desulfurization activity is improved; meanwhile, the modification of the alkali metal and / or alkaline earth metal is beneficial to enhancing the interaction between the carrier and the active component, and the dispersity of the active component in the hydrogenation catalyst is improved, so that the hydrodesulfurization activity of the catalyst is further improved.