263results 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.

The invention relates to the field of needle coke production, and discloses needle coke as well as a preparation method and application thereof. The strength of the needle coke is 25-34%; the thermal expansion coefficient of the needle coke is 0.8 * 10 <-6 > / DEG C to 1.2 * 10 <-6 > / DEG C; in the microstructure of the needle coke, the content of the mosaic structure is 0.1%-10%; the content of the small sheet structures is 10%-30%; the content of the large sheet structure is 15-40%; the content of the fine fiber structure is 10%-45%; and the content of the crude fiber structure is 10-45%. The needle coke provided by the invention has better optical structure, thermal expansion coefficient and strength, and is suitable for producing large-diameter and ultrahigh-power graphite electrodes and graphite electrode joints.

A production method of high-structure carbon black based on petroleum-based composite raw oil comprises the following steps: S1, performing fraction cutting on the petroleum-based composite raw oil to obtain crude carbon black raw oil; s2, carrying out solvent extraction on the crude carbon black raw oil to obtain aromatic-rich carbon black raw oil; and S3, vaporizing and cracking the aromatic-rich carbon black raw oil to generate the high-structure carbon black. The method for producing the high-structure carbon black based on the petroleum-based composite raw material oil is different from the domestic existing production process of coal tar and anthracene oil, and the structure degree of the carbon black product can be improved by pretreating the petroleum residual oil and the tail oil, so that the production of the high-structure carbon black product is realized, the domestic raw material source of the high-structure carbon black is broadened, and the production cost of the high-structure carbon black is reduced. And the competitiveness of the product is improved.

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.

The present invention relates to a method for preparing high-performance coal-based needle coke by pyrolysis. The method uses coal tar pitch as the raw material, adds a polymerization promoter containing sulfur elements for thermal polymerization soaking, and then raises the temperature for pyrolysis. The raw material after pyrolysis is separated by flash evaporation to separate the heavy-phase asphalt and the raw material asphalt. The raw material asphalt is further separated by fractional distillation to separate the polymerization promoter and produce refined asphalt. The refined asphalt is calcined by coking to obtain a needle coke product. The present invention pre-treats the raw material by means of high-temperature soaking pyrolysis, effectively retains all beneficial components in the coal tar pitch, and the prepared needle coke has low sulfur and low CTE, and the quality is stable.

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.

A variety of systems and methods are disclosed, including, in one embodiment, a method of needle coke production. The method includes hydro-processing a hydrocarbon liquid by contacting the hydrocarbon liquid with at least one hydro-processing catalyst in one or more hydro-processing stages to form a hydro-processed product, wherein the hydro-processing of the hydrocarbon liquid in at least one of the one or more hydro-processing stages is performed in the presence of a utility fluid. The hydrocarbon liquid includes an initial boiling point at atmospheric pressure of about 200° C. or greater in accordance with ASTM 7500. The hydrocarbon liquid includes an aromatic content of about 50 wt. % or greater. The method further includes coking at least a portion of the hydro-processed product to form a coker effluent and coke, wherein the coke comprises needle coke.

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.

The invention provides an energy-saving rotary continuous discharging cracking furnace. The energy-saving rotary continuous discharging cracking furnace comprises a rotary furnace and a combustion furnace used for providing a heat source for the rotary furnace; the rotary furnace at least comprises a furnace body and a heating tube nest arranged in the furnace body, an outlet of the heating tube nest penetrates through the furnace wall of the furnace body and leads to the outside of the furnace body, the outer wall of the heating tube nest and the furnace wall of the furnace body are sealed, a heat collecting cover is arranged at the position, located at the outlet of the heating tube nest, outside the furnace body, and the heat collecting cover is communicated to a waste heat utilization unit. The combustion furnace is used for combusting combustible gas, generating heating gas and leading the heating gas to the heating tube nest; and the combustion furnace is connected with the heating tube nest through a heat supply main pipe penetrating through the furnace body. The heat waste in the cracking reaction process of the cracking furnace can be reduced.

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 recycling of plastic waste in crackers, including, in one embodiment, thermally cracking at least a plastic waste feed and a cracking feedstock to produce at least a cracking product comprising hydrocarbons, wherein the cracking feedstock comprises a T10 distillation point of 343°C or higher; measuring a contaminant concentration; and adjusting the plastic waste feed in response to the contaminant concentration.

A closed, gastight system for gaining sellable petroleum coke pieces out of solidified petroleum coke in a coke drum unit, wherein the system is configured to be connected to a coke drum unit (X) containing solidified petroleum coke and comprisesa coke crushing unit (C) for crushing the petroleum coke into sellable petroleum coke pieces, configured to be connected to the coke drum unit (X), particularly by means of a flexible transition piece (A);a closed sluice way (D) leading petroleum coke slurry to a closed slurry basin;a closed slurry basin (E);a dewatering bin unit (G) configured to receive the petroleum coke slurry from the slurry basin (E), to collect the sellable petroleum coke pieces, and to act as a filter leading runoff drain water from a lower area thereof as filtered water and petroleum coke fines out of it;a closed drain water basin (I), separate from the slurry basin (E), configured to receive the filtered water and the petroleum coke fines from the dewatering bin unit (G);a water tank (L) configured to receive the filtered water from the drain water basin (I);a hot quench water draining line (2) configured to receive hot quench water from the coke drum unit (X) and to lead the same to the closed slurry basin (E); andcharacterised:in that the water tank (L) is configured as single water tank (L) without a separate second tank; andby comprising one or more of the following elements:a first vent collection line (15a) extending from a top portion of the closed slurry basin (E) to the clean water tank (L), particularly a top portion thereof, for collecting excess amounts of gaseous phase from the slurry basin (E) and for feeding the same to the clean water tank (L);a second vent collection line (15b) extending from the dewatering bin unit (G), particularly a top portion thereof, to the clean water tank (L), particularly a top portion thereof, for collecting excess amounts of gaseous phase from the dewatering bin unit (G) and for feeding the same to the clean water tank (L); anda third vent collection line (15c) extending from the closed drain water basin (I), particularly a top portion thereof, to the clean water tank (L), particularly a top portion thereof, for collecting excess amounts of gaseous phase from the closed drain water basin (I) and for feeding the same to the clean water tank (L);and by comprising a fourth vent collection line (15d) extending from the water tank (L), particularly a top portion thereof, to a vent treatment unit, in particular to a vent incineration unit.

The present invention discloses a coke guide device for processing and producing petroleum coke, comprising a main support plate, a conveyor 1 being arranged between a plurality of the main support plates, the outer walls of two of the main support plates being fixedly connected to a same guard plate, a conveyor 2 being arranged between the two guard plates, one end of the driving shaft of the conveyor 1 passing through the main support plate and being fixedly connected to a first motor, the outer wall of the output shaft of the first motor being fixedly connected to a bevel gear 1. By providing a rectangular plate 1, a special block 2 and a special connecting rod, when the connecting belt 1 rotates, the special connecting rod will also rotate together. Since one end of the special connecting rod is slidably connected to the inner wall of a special groove, and the special connecting rod is fixed, under the joint action of the rectangular plate 1 and the special block 2, the rectangular plate 1 will perform rapid reciprocating motion in the horizontal direction, and the feed barrel 1 fixedly connected to one end of the rectangular plate 1 will also perform the same motion, greatly improving the efficiency of screening materials.

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.