55results about "Naphtha reforming" patented technology

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).

The application belongs to the technical field of new materials, and relates to a catalyst based on Sn modified KL molecular sieve as well as a preparation method and application thereof. An aluminum source and a potassium source are added into water to prepare a KAlO2 solution, an ethanol solution of a divalent tin salt is added into a silicon source to uniformly mix to obtain a mixed solution, the KAlO2 solution is added into the mixed solution to fully stir to obtain an initial sol, the initial sol is subjected to crystallization treatment, and then is heated to 450-650 DEG C to perform calcination treatment to obtain Sn modified KL molecular sieve, and Pt is loaded on the Sn modified KL molecular sieve by using an atomic layer deposition method. The catalyst based on the Sn modified KL molecular sieve prepared by the application has better catalytic performance in a naphtha reforming reaction for preparing aromatic hydrocarbons.

Proposed is a method for manufacturing aviation fuel, the method including preparing a feed, preparing an FT syncrude by subjecting the feed to a Fischer-Tropsch (FT) reaction, wherein the FT syncrude includes a first fraction and a kerosene fraction, the first fraction being a fraction with a boiling point range below that of kerosene, and the total content of the first fraction and the kerosene fraction in the FT syncrude being equal to or greater than 85 wt %, subjecting the first fraction to a reaction for increasing the boiling point, wherein the first fraction is converted to the second fraction, and the second fraction has a higher boiling point than the first fraction, and collecting aviation fuel from the kerosene fraction and the second fraction.

Systems and methods of producing biocrude oil include a well having a depth, a top positioned at surface, a bottom portion positioned at a subterranean location, the well comprising casing and tubing positioned therein, forming an annulus. The casing and tubing define a hydrothermal liquefaction (HTL) reaction zone in a bottom portion of the well and a heat transfer and separation zone above the HTL reaction zone. The well includes a cable having an electric heating element positioned in the tubing in the HTL reaction zone configured to transfer energy to biomass slurry flowing through the tubing, converting some of the biomass slurry into biocrude oil by HTL. The well depth and the electrical heating element are sized to produce temperature and pressure in the HTL reaction zone sufficient to form sub-critical water and produce a product fluid comprising the biocrude oil.

A method for reducing or preventing corrosion or fouling in an apparatus for carrying out a chemical process, where corrosion or fouling is caused by acidic compounds present in the chemical process, which comprises the addition of at least one quaternary ammonium hydroxide of the formula (I) to the apparatus, wherein the chemical process is carried out: [Chem. 1] where R1, R2, R3 are each independently C1-C10 alkyl; R4 is inter alia C1-C18 alkyl, benzyl, monocycloalkyl having 5, 6, 7 or 8 carbon atoms, bicycloalkyl having 6 to 8 carbon atoms, tricycloalkyl having 7 to 10 carbon atoms, where monocycloalkyl, bicycloalkyl and tricycloalkyl are unsubstituted or substituted by 1 or 2 methyl groups, or tri-C1-C4 alkyl ammonium groups. R1 and R2 together with the nitrogen atom may also form a 5 or 6-membered, saturated nitrogen heterocycle, which is unsubstituted or carries 1 or 2 methyl groups; and / or R3 and R4 together with the nitrogen atom may also form a 5 or 6-membered, saturated nitrogen heterocycle, which is unsubstituted or carries 1 or 2 methyl groups.

The invention discloses a preparation method of a C5 and C6 alkane isomerization alkylation catalyst, which comprises the following steps: (1) adding a roasted MOR molecular sieve into alkali liquor, and carrying out ultrasonic oscillation, so that the MOR molecular sieve is partially dissolved in the alkali liquor to obtain alkali liquor A with a basic structural unit of an MOR topological structure; (2) adding a nano ZSM-5 molecular sieve and an MOR seed crystal into the alkaline solution A, and stirring to obtain an alkaline solution B; (3) crystallizing, filtering, washing, drying and roasting the alkali liquor B to obtain a ZSM-5-MOR composite molecular sieve with nano ZSM-5 as a core and MOR on the outer surface as a shell; and (4) carrying out active metal modification on the ZSM-5-coated MOR composite molecular sieve according to an impregnation method to obtain the catalyst. According to the preparation method, the catalytic stability of the catalyst can be improved, and the alkylation performance of C5 and C6 alkanes is improved.

A novel synthetic crystalline borongermanosilicate molecular sieve material, designated boron SSZ-117x, is provided. The boron SSZ-117x can be synthesized using N,N,N,3,5-pentamethyladamantan-1-ammonium cations as a structure directing agent. The synthesis employs a boron pathway to achieve the boron molecular sieve. The boron SSZ-117x may be used in organic compound conversion reactions, such as reforming, and / or sorptive processes.

Catalysts and method of preparing the catalysts are disclosed. One of the catalysts includes a zeolite support, a Group VIII metal on the zeolite support, and at least two halides bound to the zeolite support, to the Group VIII metal, or to both, and can have an average crush strength greater than 11.25 lb based on at least two samples of pellets of the catalyst measured in accordance with ASTM D4179.

Processes for activating a high-chlorine content aromatization catalyst in a reactor system include the steps of contacting the aromatization catalyst with an inert gas stream in the reactor system at a drying temperature of 300-400° C. to form a treated catalyst, and then contacting the treated catalyst with a reducing gas stream in the reactor system to form an activated catalyst. Subsequently, a hydrocarbon feed can be contacted with the activated catalyst under reforming conditions in the reactor system to produce an aromatic product.

A novel synthetic crystalline molecular sieve material, designated boron ITQ-21, is provided. The boron ITQ-21 can be synthesized using an N,N-diethyl-5,8-dimethyl-2-azonium bicyclo [3.2.2] nonane cation as a structure directing agent. The boron ITQ-21 may be used in organic compound conversion reactions and / or sorptive processes.

This invention discloses a method for microwave-catalyzed dehydrogenation of naphtha to produce aromatics, specifically comprising the following steps: Step 1, oxidizing and etching the surfaces of four different diameter carbon fibers to obtain four modified carbon fibers; Step 2, preparing four platinum-carbon fibers of different diameters based on the four modified carbon fibers obtained in Step 1; Step 3, preparing a gradient-pore structured platinum-carbon fiber paper based on the four different diameter platinum-carbon fibers obtained in Step 2; Step 4, using the gradient-pore structured platinum-carbon fiber paper obtained in Step 3 to catalyze the dehydrogenation of naphtha to obtain aromatics. This invention uses microwave-assisted catalysis to lower the reaction temperature, achieving localized catalytic heating to reduce side reactions, and also achieves high dehydrogenation efficiency.

A catalyst composition including a metal oxide catalyst having a surface containing M-O site pairs of the acid-base Lewis type and of balanced acid-base strength; and a cracking component. The catalyst composition as disclosed herein is used in treating a variety of feeds including, but not limited to, naphtha, pyrolysis oil, polyolefins, or a combination thereof. The bifunctional catalytic nature of the catalyst composition enables catalytic cracking as well as hydrogenation and dehydrogenation reaction for the conversion of long-chain alkanes to mixture of short chain alkanes and alkenes using a catalyst composition based on metal-oxides that avoids the use of precious metals.

Provided is a method for preparing synthesis gas, and more particularly, a method for preparing synthesis gas including: supplying a cracked gas stream discharged from a cracking furnace of a naphtha cracking center (NCC) process to a gasoline fractionator, separating a side discharge stream from the gasoline fractionator using a first stripper, and separating a lower discharge stream from the gasoline fractionator using a second stripper, wherein a mixed oil stream of a PGO stream and a PFO stream formed by controlling a flow rate of each stream are used.

Processes for activating a high-chlorine content aromatization catalyst in a reactor system include the steps of contacting the aromatization catalyst with an inert gas stream in the reactor system at a drying temperature of 300-400 °C to form a treated catalyst, and then contacting the treated catalyst with a reducing gas stream in the reactor system to form an activated catalyst. Subsequently, a hydrocarbon feed can be contacted with the activated catalyst under reforming conditions in the reactor system to produce an aromatic product.

A novel synthetic crystalline borongermanosilicate molecular sieve material, designated boron SSZ-117x, is provided. The boron SSZ-117x can be synthesized using N,N,N,3,5-pentamethyladamantan-1-ammonium cations as a structure directing agent. The synthesis employs a boron pathway to achieve the boron molecular sieve. The boron SSZ-117x may be used in organic compound conversion reactions, such as reforming, and / or sorptive processes.

The invention provides a novel synthetic crystal molecular sieve material which is named as boron ITQ-21. The boron ITQ-21 may be synthesized using a N, N-diethyl-5, 8-dimethyl-2-azoniumbicyclo [3.2. 2] nonane cation as a structure directing agent, and a method for synthesizing the boron ITQ-21 using the N, N-diethyl-5, 8-dimethyl-2-azoniumbicyclo [3.2. 2] nonane cation. The boron ITQ-21 may be used in organic compound conversion reactions and / or adsorption processes.

The invention discloses a catalyst for improving an octane number in light naphtha isomerization and a preparation method of the catalyst. The catalyst comprises 40-70wt% of a carrier, 5-15wt% of a dispersing agent, 15-25wt% of a pore forming agent and 8-20wt% of transition metal, wherein the transition metal is based on the oxide thereof. The two active centers of the ZSM-5-5at-ZrO2 composite molecular sieve catalyst cooperate to catalyze cracking and alkylation, and due to the mesopores of the shell, the diffusion resistance is reduced, and the diffusion of reactants and products is accelerated, so that the ZSM-5-5at-ZrO2 composite molecular sieve catalyst has the characteristics of good accessibility of the catalytic active centers, high catalytic activity, good stability and the like.

A method for producing light aromatic hydrocarbons from C9+ aromatic hydrocarbons includes a step of contacting a C9+ aromatic hydrocarbon with a dealkylation catalyst comprising a KL zeolite, and platinum and a modifying metal supported thereon in the presence of hydrogen, to obtain a light aromatic hydrocarbon. The modifying metal is selected from the group consisting of Group IIA metals and rare earth metals. By using a Pt / KL catalyst comprising a specific modifying metal in the dealkylation reaction of C9+ aromatic hydrocarbons for producing light aromatic hydrocarbons, the method shows the advantages of high conversion rate of feedstock, high yield of light aromatic hydrocarbons, good reaction selectivity.

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. In some aspects, recycled content aromatics (r-aromatics) from a hydrocarbon resin production facility 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).

The integrated process for producing paraxylene involves catalytically reforming a naphtha feed stream to form a reformed oil stream; this reformed oil stream is then converted into a C1-C7 hydrocarbon stream and C 8+ Steps to separate into hydrocarbon streams; steps to expose the C1-C7 hydrocarbon streams to a first solvent in a solvent extraction unit to form non-aromatic hydrocarbon streams and C6-C7 aromatic compound streams; steps to separate the C6-C7 aromatic compound streams into at least a toluene feed stream; C 8+ Hydrocarbon flow C 9+ Steps to separate the hydrocarbon stream and the xylene stream; steps to separate the xylene stream in a p-xylene separation unit to form a para-xylene stream and a xylene isomer stream; steps to isomerize the xylene isomer stream to produce a para-xylene-rich stream; and steps to separate the toluene feed stream and C in a hybrid dealkylation / transalkylation unit. 9+ The process may include upgrading the hydrocarbon stream with a hydrogen stream and a hybrid transalkylation / dealkylation catalyst to produce a product stream containing paraxylene.

A novel synthetic crystalline aluminogermanosilicate molecular sieve material, designated SSZ-117x, is provided which exhibits increased acidity. The SSZ-117x can be synthesized using N,N,N,3,5-pentamethyladamantan-1-ammonium cations as a structure directing agent. The synthesis employs a boron pathway to achieve increased acid sites. The SSZ-117x of increased acidity may be used in organic compound conversion reactions and / or sorptive processes.

A method for scheduling a naphtha cracking center by at least one processor includes: obtaining input information; determining incoming tank information using a first agent based on the input information; determining mixing tank combination information using a second agent; and determining cracking furnace operation information using a third agent.

Provided is a novel synthetic crystalline borongermanosilicate molecular sieve material, designated boron SSZ-113. The boron SSZ-113 can be synthesized using 1,3 bis(2,3-dimethyl-1H-imidazolium) propane dications as a structure directing agent. The boron SSZ-113 may be used in organic compound conversion reactions and / or sorptive processes, and in particular, in reforming reactions.

The utility model relates to a reforming pre-hydrogenation unit, in particular to a flow control system of a naphtha extraction pump at the top of a naphtha separation tower of the reforming pre-hydrogenation unit, which belongs to the field of petrochemical engineering and comprises a naphtha separation tower, a reflux tank, a reflux pump, a light naphtha pump and a crossing pipeline. The naphtha separation tower is connected to the reflux tank through a tower top outlet pipeline, the reflux tank is connected to an inlet of the naphtha separation tower through a reflux pipeline and a reflux pump, and the reflux tank extracts light naphtha through a light naphtha delivery pipeline and a light naphtha pump; the reflux pump outlet is connected to the light naphtha pump outlet through a crossover line. The light naphtha pump can be stopped when pumice is insufficient, and small-flow stable delivery of the light naphtha is realized by crossing a pipeline. Furthermore, the stability of the feeding flow and components of the C4 / C5 separation tower and the product quality are ensured, and the start-stop frequency of a pump and the adjustment difficulty of internal operation are greatly reduced.

The invention belongs to the technical field of oil and gas exploitation, and particularly relates to a shale oil adsorption state-free state targeted conversion method based on pore wall surface in-situ electrochemical modification. According to the method, a pulse electric field is utilized to drive a special targeting modification liquid to enter shale nano pores, an electrochemical polarization reaction is induced on the kerogen / mineral surface (pore wall surface), and the original oleophylic (Oil-wet) pore wall is forcibly modified into hydrophilic / aerophilic (Water / Gas-wet), so that the interfacial adsorption energy is greatly reduced, and the technical effects of stripping adsorbed oil and converting the adsorbed oil into flowable free oil are achieved. Compared with the prior art, the treatment efficiency is greatly improved, the chemical properties of kerogen / mineral wall surfaces can be permanently changed, and secondary adsorption of crude oil is avoided.

The invention discloses a preparation method of a catalyst for improving the octane number of light naphtha, and the preparation method comprises the following steps: (1) adding a roasted MCM-22 molecular sieve into alkali liquor, and carrying out ultrasonic oscillation, so that the roasted MCM-22 molecular sieve is partially dissolved in the alkali liquor to obtain an alkali solution A with a basic structure unit of an MWW topological structure; (2) adding a nano ZSM-5 molecular sieve and an organic template agent into the alkaline solution A, and stirring to obtain an alkaline solution B; (3) crystallizing the alkali liquor B, filtering, washing, drying and roasting to obtain a ZSM-5-MCM-22 composite molecular sieve with nano ZSM-5 as a core and MCM-22 as a shell on the outer surface; and (4) carrying out transition metal ion modification on the ZSM-5-coated MCM-22 composite molecular sieve according to an impregnation method to obtain the catalyst. The ZSM-5-coated MCM-22 composite molecular sieve catalyst obtained by the preparation method disclosed by the invention not only has high catalytic activity in a light naphtha catalytic reaction, but also has excellent isomerization performance and stable catalytic stability.

Methods of transporting hydrogen may include, at a first hydrocarbon processing facility, hydrogenating a C9+ aromatic compounds-containing stream to form a saturated cyclic C9+ containing effluent stream; transporting the saturated cyclic C9+ containing effluent stream to a second hydrocarbon processing facility; and at the second hydrocarbon processing facility, and passing the saturated cyclic C9+ containing effluent stream and a hydrotreated heavy naphtha stream to a catalytic reformer to form a reformate stream; and separating a hydrogen gas product stream from the reformate stream. The first hydrocarbon processing facility and the second hydrocarbon processing facility may be separated by at least 100 km. The methods for processing hydrogen may include hydrotreating a heavy naphtha stream and passing a saturated cyclic C9+ containing effluent stream and the hydrotreated heavy naphtha stream to a catalytic reformer to form a reformate stream comprising hydrogen gas; and separating hydrogen gas from the reformate stream.