161 results about "Fluid catalytic cracking" patented technology

The invention relates to the field of catalytic cracking, in particular to a modified catalytic cracking catalyst and a preparation method and application thereof. The modified catalytic cracking catalyst is of a core-shell structure and comprises an inner core and an outer shell, the inner core contains catalytic cracking catalyst finished product particles and alkaline earth metal elements, and the outer shell contains the alkaline earth metal elements and rare earth metal elements. Compared with other catalysts of the same type, the modified catalytic cracking catalyst has more excellent nickel resistance on the basis of not influencing the catalytic cracking performance, and also has lower dehydrogenation activity.

Methods and systems for mixing dissimilar hydrocarbon feedstock materials to form hydrocarbon feedstock blends for subsequent processing. The dissimilar hydrocarbon feedstock materials can differ by chemical composition, polarity, solubility, and / or physical state and include one or more of biomass-derived materials, non-petroleum-derived oils or fats, polymers, fabrics or textiles, paper or cardboard, rubber, waste products, pyrolysis products of the foregoing, or petroleum-derived materials. Efficient and thorough mixing of the dissimilar hydrocarbon feedstock materials is performed by static inline mixing to form an intermediate blend, which is further mixed by high shear mixing to form the hydrocarbon feedstock blend. The methods and systems may involve other processing equipment e.g., strainers, filters, pumps, furnaces, heat exchangers, reactors, separators, tanks, and / or distillation columns. The hydrocarbon feedstock blend may be further processed by hydrocracking or hydroconversion e.g., by ebullated bed, fixed bed, or slurry bed reactor), solvent deasphalting, coking, fluid catalytic cracking, hydroprocessing, or hydrotreating.

Systems and processes for cracking hydrocarbons to produce light olefins include an FCC reactor utilizing counter-current flow that includes a reaction zone comprising an elongated reaction tube that has a feed inlet, a product outlet, and a catalyst inlet. In embodiments, the FCC reactor further includes a freeboard zone. The freeboard zone is configured to reduce a superficial velocity of the cracked hydrocarbon fluids in the reaction zone, causing catalyst entrained in the cracked hydrocarbon fluids to at least partially separate from the cracked hydrocarbon fluids. In embodiments, the FCC reactor includes a dense fluidized bed unit. The dense fluidized bed unit is configured to inject a fluidizing gas such that bubbles are formed within the solid particles of the dense fluidized bed of solid particles, which causes the catalyst to overflow from the dense fluidized bed of solid particles into the reaction zone.

Processes, reactors, and systems for converting waste plastic feedstock into liquid and gaseous products suitable for use in either fluid catalytic cracking or steam cracking to produce ethylene and propylene are described.

The invention relates to the technical field of desulfurization tower steam-water separation, and particularly discloses a steam-water separation device applied to flue gas at the tail part of a desulfurization tower of a catalytic cracking unit, the steam-water separation device comprises a steam-water separator shell which is arranged on the desulfurization tower, and also comprises a humidity sensor for detecting the water content of the flue gas; the collecting parts of the blades are connected through a rotating shaft; the first driving device is used for driving the blades to revolve along the central axis of the steam-water separator shell; the second driving device drives the blades to rotate according to feedback data of the humidity sensor so as to change the inclination angle of the blades. Through the centrifugal effect of the cyclone separator and self-adaptive adjustment of the blade angle, the condensation efficiency of water vapor in flue gas is remarkably improved, meanwhile, the rotating speed of the motor and the inclination angle of the blade are dynamically adjusted in combination with linkage control of the humidity sensor and the industrial personal computer, energy consumption is reduced, and the optimal balance between the separation efficiency and energy consumption is achieved.

Processes and facilities for producing a recycled content organic chemical compound directly or indirectly from waste plastic. Processing schemes are described herein for converting waste plastic (or hydrocarbon having recycled content derived from waste plastic) into useful intermediate chemicals and final products. The waste plastic can be liquified before being introduced to downstream processing. In some aspects, recycled content aromatics (r-aromatics) can be processed to provide recycled content paraxylene (r-paraxylene), which can then be used to provide recycled content terephthalic acid (r-TPA) and / or recycled content polyethylene terephthalate (r-PET).

Provided is a fluid catalytic cracking catalyst including faujasite-type zeolite, boehmite, a binder, and clay minerals, and satisfying the following formulas (1) and (2) in powder X-ray diffraction analysis:A / B≤1.2(1)A / C≥0.8(2)in the formulas (1) and (2), A is an integrated intensity of a diffraction peak attributed to (020) plane of the boehmite, B is an integrated intensity of a diffraction peak attributed to (120) plane of the boehmite, and C is an integrated intensity of a diffraction peak attributed to (331) plane of the faujasite-type zeolite.

A catalyst for fluid catalytic cracking is provided which contains faujasite-type zeolite, boehmite, a binder and clay minerals and which satisfies the following formulas (1) and (2) in powder X-ray diffraction analysis: A / B ≤ 1 .2 A / C ≤ 0.8 where in formulas (1) and (2), A is the integrated intensity of a diffraction peak assigned to the (020) plane of boehmite, B is the integrated intensity of a diffraction peak assigned to the (120) plane of boehmite, and C is the integrated intensity of a diffraction peak assigned to the (33 1) plane of the faujasite-type zeolite.

The utility model belongs to the field of petrochemical engineering devices, and relates to a catalytic cracking device reactor riser nozzle dismounting tool which comprises a vibration motor, a connecting plate is fixedly connected to the vibration motor, a telescopic assembly is arranged on the connecting plate, and a hanging piece is arranged on the telescopic assembly. The time for welding a tool on a nozzle and a sleeve and installing a jack, a chain block and other structures is shortened, a large amount of labor cost and material cost are saved, manual work is replaced by the vibration motor, the tool is firmly installed, the vibration motor is started for automatic dismantling, the safety risk of construction operation is reduced, and the working efficiency is improved. Meanwhile, the vibration motor and the nozzle can be hung on the sleeve after being pulled out through the hanging piece and the telescopic assembly and cannot fall off suddenly to cause damage.

A catalyst composition and method for treating a feed including oxygen is provided. The catalyst composition includes a zeolite and a coprocessing material including an oxide of at least one of magnesium (Mg), vanadium (V), and cerium (Ce).

The present invention relates to a process for producing olefins and aromatics from a hydrocarbon feedstock comprising crude oil, the process comprising the following steps: a) an atmospheric distillation step; b) a fluid catalytic cracking step; c) a fixed bed hydrocracking step; d) a steam cracking step; e) a catalytic reforming step; f) an aromatics transformation and / or separation step; g) a one-step oligomerization and catalytic cracking step. Figure 1 to be published

The invention provides a fluidized catalytic cracking catalyst with high rare earth content, a preparation method and application of the fluidized catalytic cracking catalyst in a high-iron vanadium-nickel feed catalytic cracking process, the preparation method comprises the following steps: step 1, mixing and stirring clay, pseudo-boehmite, cerium chloride, alumina sol, silica sol and water to obtain a first mixed solution; step 2, adding a P modified USY molecular sieve, cerium chloride and a silicon-containing macroporous bauxite slurry into the first mixed solution in the step 1, pulping, homogenizing, forming, roasting, washing and drying to obtain the fluidized catalytic cracking catalyst with high rare earth content. At present, the conventional rare earth content in the industry is less than 3.5% and is not more than 5% at most, while the catalyst disclosed by the invention adopts the design of high rare earth content and low molecular sieve content, iron, vanadium and nickel are passivated by the high rare earth content, and the structural stability of the catalyst is guaranteed.

A fluidized catalytic cracking unit system includes: a fluidized catalytic cracking unit assembly including a first catalyst regenerator and a cracking unit, the cracking unit configured to output spent catalyst to the first catalyst regenerator; and a reformer-electrolyzer-purifier assembly comprising a reformer-electrolyzer-purifier cell, the reformer-electrolyzer-purifier cell comprising an anode section and a cathode section.

The invention relates to the cross technical field of computer data processing technology and chemical engineering, in particular to a chemical equipment fault detection data analysis system. Comprising a data feature unit used for providing input for accurate quantification of a system state; the state fusion unit is used for receiving the feature vector and performing time sequence modeling on the strong coupling characteristic of the system by using a graph attention network so as to output a coupling state vector which can quantify the health state of the current system and predict the future evolution trend; the economic decision unit is used for formulating an optimal catalyst emission strategy capable of maximizing global economic benefits and outputting an optimal target emission rate; and the optimization execution unit is used for generating and issuing a group of underlying hardware equipment control instructions which simultaneously meet multiple constraints of safety, environmental protection and process stability so as to realize closed-loop intelligent management of catalyst inventory. According to the method, the global economic benefit of the whole fluidized catalytic cracking device is maximized, and the economic benefit of an enterprise is remarkably improved.

A process for upgrading a naphtha feed includes separating the naphtha feed into at least a light naphtha fraction, contacting the light naphtha fraction with hydrogen in the presence of at least one cyclization catalyst, and contacting the cyclization effluent with at least one cracking catalyst. Contacting the light naphtha fraction with hydrogen in the presence of at least one cyclization catalyst may produce a cyclization effluent comprising a greater concentration of naphthenes compared to the light naphtha fraction. Contacting the cyclization effluent with at least one cracking catalyst under conditions sufficient crack at least a portion of the cyclization effluent may produce a fluid catalytic cracking effluent comprising light olefins, gasoline blending components, or both. A system for upgrading a naphtha feed includes a naphtha separation unit, a cyclization unit disposed downstream of the naphtha separation unit, and a fluid catalytic cracking unit disposed downstream of the cyclization unit.

An apparatus and method for co-current gas-solid down-flow fluid catalytic cracking, comprising / using: a conduit (1) adapted to convey a down-flow (4) of catalyst particles; a mixing chamber (2) connected to the conduit and fed by the conduit with catalyst particles, the mixing chamber (2) comprising an inner wall, at least one first injector (5) for injecting a hydrocarbon feedstock (6) and a central plug (12) defining an annular region (13) through which the catalyst particles pass through the mixing chamber; and a co-current gas-solid down-flow fluidized bed reactor (3) fed from the mixing chamber with a mixture comprising catalyst particles and a hydrocarbon feedstock wherein the central plug comprises at least one internal member (11) arranged below the at least one first injector and adapted to distribute the mixture towards the walls of the mixing chamber.

Methods for producing bio-olefins by fluidized catalytic cracking (FCC) may comprise introducing a feedstock comprising a C2-C4 bio-alcohol and a petroleum-based hydrocarbon feed into an FCC reactor containing a catalyst, wherein a concentration of the C2-C4 bio-alcohol in the feedstock is about 0.5 wt% to about 99.5 wt% and the C2-C4 bio-alcohol is introduced to a first reaction zone of the FCC reactor and the petroleum-based hydrocarbon feed is introduced to a second reaction zone of the FCC reactor, the first reaction zone being located spatially below the second reaction zone; dehydrating at least a portion of the C2-C4 bio-alcohol in the first reaction zone to produce a bio-olefin; cracking at least a portion of the petroleum-based hydrocarbon feed in the second reaction zone to produce a cracking product; and obtaining an FCC product comprising the bio-olefin and the cracking product.

Assemblies and methods to enhance a fluid catalytic cracking (FCC) process associated with a refining operation, during the FCC process, may include supplying a hydrocarbon feedstock to first processing units associated with the refining operation. The assemblies and methods also may include conditioning a hydrocarbon feedstock and unit material samples, and analyzing the samples via one or more spectroscopic analyzers. The assemblies and methods further may include prescriptively controlling, via one or more FCC process controllers, based at least in part on the hydrocarbon feedstock properties and the unit material properties, the FCC processing assembly, so that the prescriptively controlling results in causing the FCC process to produce intermediate materials, the unit materials, and / or the downstream materials having properties within selected ranges of target properties, thereby to cause the FCC process to achieve material outputs that more accurately and responsively converge on one or more of the target properties.

A control system for automatic operation of a fluid catalytic cracking unit includes a reactor severity control device operable to modulate a temperature affecting volume gain within the fluid catalytic cracking unit and a controller. The controller includes a processing circuit configured to calculate the volume gain within the fluid catalytic cracking unit by comparing a volume based on one or more input oil feeds to the fluid catalytic cracking unit to a volume of one or more output oil products of the fluid catalytic cracking unit. The processing circuit is further configured to use a neural network model to generate a target severity predicted to optimize the volume gain within the fluid catalytic cracking unit. The processing circuit is further configured to operate the reactor severity control device using the target severity to modulate the temperature affecting the volume gain within the fluid catalytic cracking unit.

Systems and processes for the production of circular products, including circular olefins and circular products derived from the circular olefins, by feeding particular hydrocarbons derived from one or more feed source to steam cracking and to fluid catalytic cracking and by sending the product of steam cracking and the product of fluid catalytic cracking to an integrated separation system. The circular olefins can be used in any downstream process to produce any circular product, such as a circular product produced through polymerization, oligomerization, or hydrogenation of the circular olefins.

A resource treatment method for the flue gas desulfurization wastewater of fluid catalytic cracking, belonging to the technical field of wastewater treatment. The treatment method of the present invention for the flue gas desulfurization wastewater of fluid catalytic cracking includes steps such as aeration oxidation, carbon dioxide neutralization reaction, flocculation precipitation, evaporation concentration, double decomposition reaction, concentration separation, centrifugal separation, evaporation in an ammonia stripping tower, concentration in an evaporation kettle, and centrifugal separation. The present invention prepares sodium bicarbonate that can be recycled for desulfurization through a double decomposition reaction with the sodium sulfate in the flue gas desulfurization wastewater of fluid catalytic cracking, and the by-product is ammonium sulfate, which is used as a fertilizer; the products are sodium bicarbonate and ammonium sulfate with economic value, truly realizing a closed-loop of resource utilization from "waste" to "product"; no new "three wastes" such as waste residue, waste gas, and wastewater are generated, achieving zero discharge of wastewater in the entire desulfurization system; reducing the treatment cost; completely solving the problem of the disposal of the flue gas desulfurization wastewater of fluid catalytic cracking.

Disclosed herein is a fluid catalyst cracking (FCC) catalyst component including an in-situ crystallized zeolite on pure alumina particles, wherein the FCC catalyst component has a ratio of zeolite surface area (ZSA) to matrix surface area (MSA) of less than about 1.3. Also disclosed herein FCC catalyst compositions that include said FCC catalyst components, methods of preparing the FCC catalyst composition, methods of preparing the FCC catalyst component, and methods of using the FCC catalyst composition or the FCC catalyst component.

A process and system for fluid catalytic cracking (FCC) of hydrocarbon feeds using a multi-riser FCC reactor are described. The conditions in each riser can be adjusted to process various feeds. For example, one riser may be configured to crack heavy hydrocarbons such as vacuum gas oil (VGO) to produce intermediate and light products. Other risers may be configured to crack low and / or intermediate hydrocarbons to produce light olefins. Embodiments of the disclosed process and system may be used to provide a product spectrum having a greater amount of light olefins.

A catalyst regeneration method is suitable for a fluidized catalytic cracking unit has a catalytic cracking reactor and a catalyst regenerator. The regeneration method has the following steps: 1) providing a biomass-derived biomass charcoal; 2) feeding the biomass charcoal and the catalyst to be regenerated from the catalytic cracking reactor into the catalyst regenerator together or separately; 3) introducing an oxygen-containing gas into the catalyst regenerator, wherein the oxygen content of the oxygen-containing gas is 14-28% by volume; and 4) contacting the catalyst to be regenerated with the biomass charcoal and oxygen-containing gas in the catalyst regenerator for coke-burning regeneration. The method can significantly reduce carbon emissions from the catalytic cracking unit, realize the recycling of carbon elements, and provide energy for other process units.

A method of processing a crude oil feedstock may include: separating the crude oil feedstock to produce: a first feed fraction comprising hydrocarbons having a boiling point of greater than 350° C., a second feed fraction comprising hydrocarbons having a boiling point of greater than or equal to 160° C. and less than or equal to 350° C., and a third feed fraction comprising hydrocarbons having a boiling point of less than 160° C.; cracking the first feed fraction in a first downflow reaction zone of a fluid catalytic cracking (FCC) unit; cracking the second feed fraction in a second downflow reaction zone of the FCC unit; fractionating an effluent from the FCC unit to produce an FCC mixed C4 stream; and processing the third feed fraction and saturated C4 hydrocarbons from the FCC mixed C4 stream in a cracking unit to produce light olefins.

The present technology provides a fluid catalytic cracking (FCC) catalyst composition that includes a Y-zeolite that includes a rare earth element or oxide thereof and an alumina matrix, wherein the alumina matrix includes y-AhCb or pseudo-boehmite and a dopant; and the dopant is selected from a Group IIIB metal, Group IVB metal, Group IV A element, Group VA element, an oxide thereof, or a combination of two or more thereof.

Disclosed herein is a catalyst for use in fluid catalytic cracking comprising a zeolite material and a matrix material. In at least one embodiment, the matrix material comprises mullite at a mullite index of about 35% or greater. In at least one embodiment, a matrix surface area is less than about 150 m2 / g.

The invention relates to a method of treating a microporous crystalline zeolite, such as a Ultrastable Zeolite Y, in particular for modifying acidic properties thereof. This method comprises successive steps of: impregnating said zeolite with a solution containing a tetraalkyl ammonium hydroxide in a liquid vehicle, drying the impregnated zeolite, and contacting the dried zeolite with water vapor at a temperature of between 100 and 200 °C. The zeolite thus obtained is particularly useful for use as a catalyst in fluid catalytic cracking processes.

A process for converting a crude oil can include contacting the crude oil with one or more hydrotreating catalysts to produce a hydrotreated effluent, and contacting the hydrotreated effluent with a fluid catalytic cracking (FCC) catalyst composition in an FCC system to produce a cracked effluent comprising at least olefins. The crude oil may have an API specific gravity of 25 to 29. The FCC system can be operated at a temperature greater than or equal to 580 DEG C, the weight ratio of the FCC catalyst composition to the crude oil is from 2: 1 to 10: 1, and the residence time is from 0.1 second to 60 seconds. The FCC catalyst composition may include an ultra-stable Y-type zeolite (USY zeolite) impregnated with lanthanum; a ZSM-5 zeolite impregnated with phosphorus; an alumina binder; colloidal silicon dioxide; and a matrix material comprising kaolin.

The invention discloses an efficient FCC (fluid catalytic cracking) gasoline desulfurization device, which belongs to the technical field of gasoline processing, and comprises a treatment cylinder, an inlet / outlet is formed in the top end of the treatment cylinder, a cover plate is hinged in the inlet / outlet, a shaft rod is rotatably connected to the center of the side wall of the bottom end of the treatment cylinder, and a blade plate b positioned in the treatment cylinder is fixed on the side surface of the shaft rod; the output end of the driving motor is fixed to the bottom end of the blade plate b, an auxiliary stirring assembly is arranged in the treatment barrel, a cleaning assembly is arranged on the shaft rod, and a knocking assembly is arranged outside the treatment barrel. Materials close to the inner side wall of the treatment barrel are fully stirred through the auxiliary stirring assembly, the problem that local materials in the treatment barrel are not fully stirred and mixed is avoided, the side wall of the treatment barrel is continuously knocked through the knocking assembly, so that the side wall of the treatment barrel is vibrated, and the treatment effect is improved. And thus, material particles on the inner side wall of the treatment barrel are shaken off into the raw materials to participate in stirring and mixing, and the sufficiency of desulfurization processing is further improved.