131results about "Hydrocarbon oils refining" patented technology

The present invention provides a reforming oil hydrogenation de-olefin catalyst, which has an alumina carrier, a first active component of a Group VIB metal sulfide and a Group VIII metal sulfide, and a second active component of at least one of Pd and Pt. The first active component is distributed in a catalyst layer from the surface of the catalyst to a thickness of not more than 2 / 5 of the radius of the catalyst, and the second active component is distributed in a catalyst layer from the center of the catalyst to a thickness of not more than 4 / 5 of the radius of the catalyst. The catalyst is prepared by low-volume impregnation, in which a Group VIB metal salt and a Group VIII metal salt are first impregnated in the outer layer, dried and sulfided, then a promoter is impregnated in the outer layer, and a second active component metal salt is impregnated into the interior of the catalyst. The catalyst of the present invention prevents the inner layer of the reduced active component from being poisoned by sulfur, and also prevents the inner layer from being poisoned by metal impurities and carbon deposition, thereby improving the sulfur tolerance of the catalyst and prolonging the life of the catalyst.

Disclosed herein are methods and systems for producing hydrocarbon products through ebullated bed reactor platforms, where the feedstock to the ebullated bed reactor for hydrotreatment may be a renewable feedstock, circular feedstock, and or a blend of renewable and circular feedstocks. The disclosed methods and processes include a recycle pump system within the ebullated bed reactor vessel. This internal recycle dilutes olefins, thereby mitigating explosive olefin hydrogenation without limiting the flow of fresh feedstock to the ebullated bed reactor.

Disclosed herein are methods and systems for producing hydrocarbon products through reactor platforms utilizing a catalyst suspended in the reacting fluids, where the feedstock to the reactor may be a renewable feedstock, circular feedstock, and / or a blend of renewable and circular feedstocks. The disclosed methods and processes include a recycle pump system within the ebullated bed reactor vessel. This internal recycle dilutes olefins, thereby mitigating explosive olefin hydrogenation without limiting the flow of fresh feedstock to the ebullated bed reactor. The disclosed methods and processes include catalyst recovery systems for recovering the suspended catalyst and returning it to the reactor feed.

The present application relates to the raw material purification field, disclose a kind of porous material with desulfurization and denitrification function and its preparation method and application.The porous material of the present application has excellent desulfurization and denitrification performance, and can be prepared by one-step synthesis method.

The present invention relates to a method for preparing a bifunctional catalyst using IZM-2 zeolite, a hydrogenation function and a matrix. The preparation method according to the invention uses a specific thermal treatment of the catalyst to improve the selectivity of the isomerization of paraffinic feedstocks in middle distillates.

This invention relates to the field of petrochemical catalytic desulfurization technology, specifically disclosing a high-efficiency desulfurizing agent, its preparation method, and its application in the desulfurization of heavy naphtha. The desulfurizing agent provided by this invention has a "two-level" metal active center. The first level is a cobalt center in biochar, and the second level is a nickel-copper bimetallic center introduced through impregnation on the surface of a composite carrier. The desulfurizing agent provided by this invention has excellent desulfurization effect. Under conditions of 140°C and no hydrogen, it can simultaneously remove inorganic sulfur such as hydrogen sulfide and organic sulfur such as thiols, thioethers, and thiophenes from heavy naphtha obtained by hydrocracking of heavy diesel oil, wax oil, or mixed diesel and wax oil, reducing the total sulfur content from 25-40 μg·g. ‑1 Reduced to 0.2 μg·g ‑1 The following methods can effectively protect bimetallic (multimetallic) reforming catalysts from sulfur poisoning, and the preparation process is green and controllable, making it suitable for large-scale industrial applications.

The application discloses a method for treating hydrogen sulfide in oil wells, which comprises the following steps: (1) screening of test oil reservoir; (2) preparation of specific virulent SRB phage stock solution; (3) enrichment of specific virulent SRB phage; (4) determination of optimal titer of specific virulent SRB phage solution; (5) selection of phage fusion bactericide; (6) determination of optimal intervention point of bactericide; (7) field test and effect evaluation. The application has the following advantages: (1) wide adaptability, simple method and good operability; (2) strong pertinence; (3) phage bactericidal action can prevent the generation of bacterial drug resistance and can prolong the use time of bactericide; (4) the cost is reduced by more than 50% compared with the prior art; meanwhile, the damage of bactericide toxicity to the formation is reduced, and the method is economic and environment-friendly.

This utility model discloses a self-cleaning crude oil vacuum degassing filter assembly, comprising: a connecting pipe, with connecting flanges at both ends; a filter structure in the middle of the connecting pipe; and a cleaning component for cleaning the filter structure near the filter structure. In this utility model, by using a filter structure in conjunction with the cleaning component, when filtering a mixed gas, the filter plate blocks impurities in the mixed air, achieving a filtering effect. After the filter plate has been used for a period of time, a drive motor drives a drive wheel to rotate the connecting frame, rotating the filter plate into a protective housing. Then, an air blowing hood reverses the airflow, blowing away the impurities blocked by the filter plate. This cycle of operation maintains the filter plate's permeability while the filter assembly is in operation.

Processes integrating product streams from Fischer-Tropsch processes with other hydrocarbon processes, including, hydroprocessing, and naphtha to ethane and propane to ethylene and propylene, are described. In some cases, the Fischer-Tropsch product stream is separated into two or more streams before being sent to the later process, while in other cases the entire Fischer-Tropsch product stream is sent to the subsequent process.

The utility model discloses a kind of aromatization production devices for improving aromatic quality, the production device is connected by external diesel pipeline, and is interlocked with diesel flow controller by heavy tower bottom temperature transmitter, realizes according to operating condition change control diesel pipe feed quantity, solves the problem of unqualified quality of heavy aromatic hydrocarbon caused by aromatization due to aromatic raw material change.

This invention provides a multi-target adsorbent for removing thiols and thioesters from oil products, its preparation method, and its application, belonging to the field of adsorption desulfurization technology. The preparation method employs a two-step strategy of "matrix synthesis followed by group modification." First, a stable matrix is ​​formed by loading the MIL-53(Cr) framework onto a porous alkaline Al2O3 support via hydrothermal synthesis. Then, maleimide and primary amine groups are grafted sequentially to obtain the multi-target adsorbent. This adsorbent exhibits high adsorption capacity for sulfides in oil products and excellent targeting selectivity for thiols and thioesters, enabling deep removal of thiols, thioesters, and other sulfides.

This invention provides compositions and methods that inhibit formation of alkenyl sulfide polymers and allow the hydrogen sulfide to be removed when scavenging hydrogen sulfide by reaction with aldehydes.

A vapor pressure monitoring system can include a plurality of sensors disposed on equipment at a processing facility during one or more stages of refining and / or processing a fluid. The plurality of sensors can be configured to monitor one or more properties of the fluid. Further, one or more transmitters can be configured to transmit the one or more properties from the plurality of sensors to a computer system. The computer system can be configured to determine a vapor pressure of the fluid based on the one or more fluid properties.

The application discloses a combined hydrogenation catalyst for high-aromatic diesel hydro-upgrading and application thereof. The combined hydrogenation catalyst is prepared by grading and filling two catalysts, namely, a hydrocracking catalyst and a hydroisomerization catalyst, and the hydrocracking catalyst and the hydroisomerization catalyst are sequentially filled along a flow direction; wherein the hydroisomerization catalyst is a hydroisomerization catalyst containing HZSM-22 molecular sieve. In the application, the combination of the two catalysts is used in a hydrocracking-hydroisomerization reaction system, and the quality of catalytic diesel oil with high aromatic content can be remarkably improved in the high-aromatic diesel hydro-upgrading reaction.

This disclosure relates to the field of renewable oil compositions and to the use of renewable oil compositions for production of hydrocarbon compositions, which can be used for traffic fuels and other solutions. An exemplary composition contains free fatty acids and triglycerides, in a concentration of free fatty acids from 15 wt-% to 80 wt-% and a remainder being predominantly triglycerides. A method for producing hydrocarbons from a renewable oil feedstock, in which the feedstock which contains free fatty acids from 15 wt-% to 80 wt-%, and a remainder being predominantly triglycerides, is subjected to a pretreatment process followed by a hydrotreatment process for obtaining hydrocarbons.

The present invention relates to a reactor with an arrangement of at least two successive reactor layers comprising layers of bi-functional catalysts and mono-functional catalysts for improving the cold flow properties of higher hydrocarbon fractions, and to a process for the hydroconversion of a reaction fluid comprising a middle distillate fraction with a Watson K-factor > 11.8 in the presence of sulfur-containing organic compounds and / or nitrogen-containing organic compounds.

The invention relates to a process for treating a biocrude feedstock obtained from a hydrothermal liquefaction treatment to reduce the content of inorganic compounds, comprising: - a step of diluting the biocrude feedstock with a light organic diluent to obtain a diluted biocrude feedstock; - a step of washing the diluted biocrude feedstock with at least one aqueous solvent, followed by a step of backwashing with a counter-solvent comprising at least one hydrocarbon cut at a specific boiling point, in one or more countercurrent liquid-liquid extraction columns; - a raffinate fractionation step to obtain at least the biocrude feedstock depleted in inorganic compounds and a phase comprising the diluent.

The invention belongs to the technical field of chemical engineering separation, and provides a natural eutectic solvent and a preparation method and application thereof, the natural eutectic solvent comprises the following components: caprolactam, citric acid and water; wherein the molar ratio of caprolactam to citric acid is (1-4): (1-2); the mass of the water is 20-40% of the sum of the mass of the caprolactam and the mass of the citric acid. By introducing water as a third component, the viscosity of the system is effectively reduced, the mass transfer performance is improved, and the denitrification efficiency is improved. The eutecticevaporate solvent provided by the invention can provide more reaction sites, has relatively strong removal capacity and selectivity on nitrogenous organic matters, and can realize efficient denitrification under mild conditions. The natural deep-eutectic solvent prepared by the preparation method disclosed by the invention is applied to removal of basic nitrides of oil products, and has the advantages of short time consumption and low dosage, namely high removal efficiency.

The application discloses a catalyst for producing low-haze lubricating oil base oil and a preparation method and application thereof. The catalyst contains hydrogen type ZSM-22 / ZSM-23 eutectic molecular sieve, and the mass content of the ZSM-22 molecular sieve in the hydrogen type ZSM-22 / ZSM-23 eutectic molecular sieve is 10-95%, preferably 15-90%. The preparation method of the catalyst comprises the following steps: (1) preparing hydrogen type ZSM-22 / ZSM-23 eutectic molecular sieve; (2) mixing, shaping, drying and calcining the hydrogen type ZSM-22 / ZSM-23 eutectic molecular sieve prepared in the step (1), macroporous alumina and a binder to obtain a carrier; and (3) introducing noble metal active components into the carrier obtained in the step (2) and obtaining the final catalyst after drying and calcining. The catalyst prepared by the method has high weak acid content and appropriate strong acid content, can improve the liquid yield, and greatly reduces the haze point of the lubricating oil base oil.

Provided herein are processes for recycling hydrocarbons in a used high performance lubricant such as wind turbine gear oil. In the present process and methodologies, the used high performance lubricant is not mixed with another type of used oil. The used high performance oil is contacted with a solvent in an extraction process. Contaminates are extracted and circular hydrocarbons are formed. Solvent can be recovered, and the circular hydrocarbon combined with a high performance base stock for use as a high performance lubricant in a mechanical system.

The application belongs to the field of catalysis technology and discloses a high-density long-chain alkane dehydrogenation catalyst and a preparation method thereof.The high-density long-chain alkane dehydrogenation catalyst is a combination of Pt, Sn, Ni, Fe and alkali metals or oxides supported on a mesoporous and microporous alumina carrier.The catalyst is mainly used in the reaction process of dehydrogenation of long-chain normal alkane (C10-C13) to prepare mono-olefins, the catalyst uses a high-density carrier in the form of a rolling ball, the preparation process is more safe and environmentally friendly, and the catalyst dehydrogenation life is more improved, and the dehydrogenation stability is improved by 15-30%.

This invention discloses an alkane hydroisomerization catalyst, its preparation method, and its application. The catalyst comprises Pt / Al₂O₃, Pt-M / C₃N₄, and a molecular sieve, where M is a metal promoter. In Pt / Al₂O₃, Pt exists in the form of nanoclusters, while in Pt-M / C₃N₄, Pt exists in the form of single atoms. When used in alkane isomerization reactions, this catalyst significantly improves the utilization efficiency of Pt metal to obtain the optimal isomer yield and reduces the reaction temperature required to achieve the optimal yield.

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

This document provides systems and methods for converting CO2 and reducing gases, such as H2 or hydrocarbons, into alkane mixtures for use as alkane aviation fuels, and also into mixtures of alkanes and aromatic compounds suitable for use as aviation fuels. The systems and methods disclosed offer advantages over previous methods, involving increased carbon selectivity and improved catalyst stability and lifetime.

This invention discloses a process flow for water injection in a hydrogenation unit. It uses condensate from high-pressure (4.0–3.5 MPa) or medium-pressure steam (1.0–2.0 MPa) as the injection water, continuously injected before the amine salt crystallization temperature along with the reaction effluent or before the high-pressure gas heat exchanger, eliminating the need for a continuous water injection point before the air cooler. Compared with existing technologies, this method offers the following advantages: it minimizes the impact of water injection on the heat exchange of the high-pressure medium, maximizing heat recovery; it avoids the risk of intermittent water injection before conventional heat exchangers; it saves on water injection pipelines and valves before the high-pressure air cooler; and it incidentally recovers the heat from the high-temperature condensate, reducing overall plant energy consumption.

This invention provides compositions and methods that inhibit formation of alkenyl sulfide polymers and allow the hydrogen sulfide to be removed when scavenging hydrogen sulfide by reaction with aldehydes.

The utility model relates to the technical field of three-phase separators, in particular to a scum removing device of an oil field three-phase separator, which comprises a mounting sleeve, the mounting sleeve is fixedly mounted on the outer side of the three-phase separator through bolts, a containing shell is fixedly mounted on the outer side of the mounting sleeve, a fixing frame is fixedly mounted at the upper end of the containing shell, and a scum removing device is mounted on the fixing frame. An electric telescopic rod is fixedly mounted at the top of the fixing frame, a lifting frame is fixedly mounted at the lower end of the electric telescopic rod, a motor is fixedly mounted in the lifting frame, a connecting mechanism is fixedly mounted at the end of the motor, and a guide rod is fixedly mounted at the lower end of the connecting mechanism; the scum removing device can clean scum on the surface of the three-phase separator, the height of the scraping rod can be adjusted according to the height of the liquid level, and the scum removing device is worthy of popularization.