2385results about "Treatment with hydrotreatment processes" patented technology

Methods and systems for converting a renewable fuel intermediate composition to finished transportation fuel are provided herein. In some examples, a renewable fuel intermediate composition is flowed over a first catalyst in a first reaction zone to generate a saturated, hydrodeoxygenated product. A liquid portion of the renewable fuel intermediate composition may be characterized as having more than about 70 wt % of the oxygen being within ketone groups. The saturated, hydrodeoxygenated product may be flowed over a second fixed-bed catalyst in a second reaction zone to generate a product including the finished transportation fuel.

A process is provided for upgrading low value lipid feedstocks for refinery processing. The process includes (a) treating a lipid feedstock comprising at least one fatty acid with a metal oxide catalyst on an oxide support under treating conditions to produce a treated stream, wherein the treating conditions include a temperature in a range of from 400° C. to 700° C.; a pressure in a range of from 0 to 10 MPa; and a liquid hourly space velocity in a range of from 0.1 to 10 h−1; and (b) fractionating the treated stream to obtain a gaseous fraction and a liquid fraction comprising a bio-oil; wherein the bio-oil has a lower content of oxygen and impurities as compared to the lipid feedstock.

The invention provides a flexible preparation system and method for sustainable aviation fuel, and the system comprises a green power supply module which is used for outputting fluctuating green electric energy; the process execution device is connected with the green power supply module and comprises five process modules, namely an air carbon capture module, a co-electrolysis module, a Fischer-Tropsch synthesis module, a hydrogen production module and a hydrogenation refining module; the data acquisition module is used for acquiring the temperature, the pressure, the liquid level, the raw material input flow and / or the product output flow of each process module in the process execution device; and the decision control module is used for predicting the future power supply condition of the green electricity based on the historical weather data of the green electricity location, adjusting the distribution of the power in each process module according to the future power supply condition, and adjusting the temperature, pressure and / or raw material input flow in each process module. According to the invention, the cost, the reliability, the operation and maintenance performance, the product quality and the green power utilization rate can be substantially improved at the same time, and the flexible and stable operation of the system under the green power condition is realized.

A process for upgrading plastic derived oil includes contacting a plastic derived oil stream with a decontamination catalyst in a first reactor, separating a first reactor effluent from a used decontamination catalyst, passing the first reactor effluent to a second reactor downstream of the first reactor, contacting the first reactor effluent with a cracking catalyst in the second reactor, and separating a second reactor effluent from a used cracking catalyst. The cracking catalyst is different from the decontamination catalyst. The process further includes regenerating the used decontamination catalyst in a decontamination catalyst regenerator to produce regenerated decontamination catalyst, and regenerating the used cracking catalyst in a cracking catalyst regenerator separate from the decontamination catalyst regenerator to produce regenerated cracking catalyst. Regenerating the used cracking catalyst separately reduces deactivation of the cracking catalyst by halogen-containing compounds produced during regeneration of the decontamination catalyst.

The invention discloses a production method and a production device of an energy-saving sustainable aviation fuel, and the production method comprises the following steps: S1, adsorbing carbon dioxide in air by using an adsorbent, desorbing through high-temperature carrier gas, and cooling and compressing the desorbed carbon dioxide; s2, carbon dioxide and deionized water are preheated and then electrolyzed, and synthesis gas and oxygen are generated; s3, after the synthesis gas is compressed, performing Fischer-Tropsch reaction to generate a mixture of Fischer-Tropsch oil wax, light hydrocarbon and water, cooling and separating, and returning the Fischer-Tropsch reaction heat to preheat the synthesis gas; s4, pressurizing the Fischer-Tropsch oil wax, mixing the Fischer-Tropsch oil wax with hydrogen, carrying out hydrofining reaction to generate a gas-liquid isomerous oil-gas mixture, cooling and separating, and recycling heat energy of a product to And S5, after gas-liquid separation, preheating a liquid phase, carrying out rectification operation, separating and cooling to obtain a sustainable aviation fuel product. By recovering the heat in each link, the heat is efficiently utilized, and the energy-saving performance of production is improved.

The invention discloses a waste plastic pyrolysis oil dechlorination method, which comprises: S1, removing mechanical impurities in waste plastic pyrolysis oil, washing to remove inorganic chloride, carrying out oil-water separation, and drying the obtained oil phase to obtain primary dechlorinated waste plastic pyrolysis oil; s2, mixing the primary dechlorinated waste plastic pyrolysis oil with hydrogen, feeding the mixture into a pre-hydrogenation reactor, and converting alkadiene in the primary dechlorinated waste plastic pyrolysis oil into monoolefine under the action of a pre-hydrogenation catalyst to obtain pre-hydrogenated waste plastic pyrolysis oil; s3, fractionating the pre-hydrogenated waste plastic pyrolysis oil into light distillate oil, medium distillate oil and heavy distillate oil; s4, the light distillate oil reacts with hydrogen under the action of a hydrodechlorination catalyst to remove organic chlorides, and a reaction product is subjected to gas-liquid separation to obtain hydrodechlorinated pyrolysis oil; and S5, contacting the medium distillate oil with an adsorbent to obtain adsorption dechlorinated pyrolysis oil. The method is high in chlorine removal rate and good in product quality.

A reactor system includes a reactor that treats a lipid feedstock using a metal oxide catalyst to produce a treated stream comprising a bio-oil. The metal oxide catalyst includes catalyst particles having a diameter of 0.01 to 0.5 mm. The metal oxide catalyst can comprise calcium on alumina. The bio-oil has an increased proportion of transportation fuels relative to other techniques for processing lipid feedstocks.

A process is provided for upgrading low value lipid feedstocks for refinery processing. The process includes (a) treating a lipid feedstock comprising at least one fatty acid with a metal oxide catalyst on an oxide support under treating conditions to produce a treated stream, wherein the treating conditions include a temperature in a range of from 400° C. to 700° C.; a pressure in a range of from 0 to 10 MPa; and a liquid hourly space velocity in a range of from 0.1 to 10 h−1; and (b) fractionating the treated stream to obtain a gaseous fraction and a liquid fraction comprising a bio-oil; wherein the bio-oil has a lower content of oxygen and impurities as compared to the lipid feedstock.

Methods for upgrading heavy aromatic waste streams, such as polystyrene, to chemical feedstocks are disclosed. The process involves feeding waste streams to a first pyrolysis zone followed by hydrogenation. The hydrogenation effluent is processed to recover ethylene, propylene, benzene, ethylbenzene, or their precursors. Optionally, the effluents are separated into light and heavy streams. The light stream from the first pyrolysis effluent is sent to hydrogenation, while the heavy stream is either removed, recycled to the first pyrolysis zone, or fed to a second pyrolysis zone. The light stream from the hydrogenation effluent is processed to recover the same chemicals, and the heavy stream is similarly managed. If present, the second pyrolysis effluent is separated into light and heavy streams, with the light stream processed to recover chemicals and the heavy stream managed as before.

Embodiments of the present disclosure relate to a method and system for producing refined hydrocarbons from waste plastic pyrolysis oil. The method and system for producing refined hydrocarbons from waste plastic pyrolysis oil according to the embodiments of the present disclosure may minimize formation of an ammonium salt (NH4Cl) and may prevent an adhesion phenomenon of impurity particles in a reactor in a refining process of waste plastic pyrolysis oil containing impurities including chlorine and nitrogen. In addition, the method and system for producing refined hydrocarbons according to the embodiments of the present disclosure may have excellent refining efficiency and may implement a long-term operation of a process because deactivation of a catalyst used in the process is prevented, and may produce refined hydrocarbons having a low content of impurities and a low content of olefins from waste plastic pyrolysis oil.

The application provides a method for grading diesel deep hydrodesulfurization catalysts, which comprises the following steps: loading catalysts containing AlPO4-5 phosphorus aluminum molecular sieves and catalysts containing ETS-10 titanium silicon molecular sieves in the upper and lower parts of a fixed bed hydrogenation reactor respectively according to a loading mass ratio of 1:3-3:1, so that diesel is subjected to hydrodesulfurization reaction through catalysts containing AlPO4-5 phosphorus aluminum molecular sieves first and then through catalysts containing ETS-10 titanium silicon molecular sieves; the carrier of the catalysts containing AlPO4-5 phosphorus aluminum molecular sieves comprises AlPO4-5 phosphorus aluminum molecular sieves and aluminum oxide powder, the carrier of the catalysts containing ETS-10 titanium silicon molecular sieves comprises ETS-10 titanium silicon molecular sieves and aluminum oxide powder, and the active components of the two kinds of catalysts respectively comprise a combination of two or three of nickel oxide, molybdenum oxide and cobalt oxide. The sulfur content of the hydrogenated diesel obtained through the method can be as low as 10 μg / g or below.

The invention discloses a waste plastic pyrolysis oil dechlorination method, which comprises: S1, removing mechanical impurities in waste plastic pyrolysis oil, washing to remove inorganic chloride, carrying out oil-water separation, and drying the obtained oil phase to obtain primary dechlorinated waste plastic pyrolysis oil; s2, the primary dechlorinated waste plastic pyrolysis oil and hydrogen are mixed and then subjected to pre-hydrogenation in a pre-hydrogenation catalytic distillation tower, dialkene is converted into monoolefine, chlorine-rich light pyrolysis oil is obtained at the tower top, chlorine-poor heavy pyrolysis oil is obtained at the tower bottom, and the chlorine-poor heavy pyrolysis oil is rich in sulfur, nitrogen and metal impurities; s3, the chlorine-rich light pyrolysis oil reacts with hydrogen under the action of a hydrodechlorination catalyst to remove organic chlorides, and a reaction product is subjected to gas-liquid separation to obtain hydrodechlorinated pyrolysis oil; and S4, contacting the chlorine-poor heavy pyrolysis oil with an adsorbent to obtain adsorption dechlorinated pyrolysis oil. According to the method, the chlorine removal rate of the waste plastic pyrolysis oil is high, coke is not easy to generate, and the catalyst deactivation is slow.

This application discloses an ionic liquid catalyst for producing renewable fuel from waste oils and fats, as well as its preparation method and application, belonging to the field of waste oil and fat processing technology. Using a self-synthesized ionic liquid catalyst to catalyze the hydrogenation of waste oils and fats to produce renewable fuels, this catalyst can adsorb or convert impurities in the waste oils and fats into products, improving product yield and quality. This paves the way for the industrialized production of second-generation biodiesel from waste oils and fats.

The present invention discloses a method, device and application for producing aviation kerosene from methanol, and belongs to the field of petrochemical product processing technology. The method comprises: generating a methanol dehydration reaction product from a methanol raw material under the catalytic action of a first molecular sieve catalyst, separating and treating the methanol dehydration reaction product, and then mixing it with one or more of recycled fuel gas, recycled liquefied gas or recycled gasoline under the catalytic action of a second molecular sieve catalyst to generate a reaction oil gas, the reaction oil gas is fractionated to obtain a kerosene fraction, and the kerosene fraction is subjected to a hydrogenation and refining treatment to obtain aviation kerosene. The method for producing aviation kerosene using methanol as a raw material provided by the present invention has opened up a new way to produce aviation kerosene; the process flow is short and compact, and can effectively achieve energy conservation and emission reduction.

Electrical power derived from a renewable energy source is used to perform water electrolysis to produce oxygen and hydrogen. A flue gas and heat are produced from combustion of a fuel using at least a portion of the oxygen generated by electrolysis. A feed stream including hydrocarbon oil is hydroprocessed using the generated heat and at least a portion of the hydrogen generated by electrolysis to produce a product including a saturated hydrocarbon. At least a portion of the flue gas is hydrogenated using at least a portion of the hydrogen generated by electrolysis to produce a second product stream including a hydrocarbon, an oxygenate, or both.

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.

The invention provides a process method and system for directly capturing carbon dioxide from air and converting and utilizing the carbon dioxide. The process method comprises the following steps: adsorbing raw material gas through a carbon dioxide trapping device, and heating and desorbing to obtain purified carbon dioxide gas; the purified carbon dioxide gas and the electrolyte are subjected to electrocatalytic conversion to obtain synthesis gas, oxygen and condensate water, and the condensate water is recycled through water treatment operation to be used for supplementing the electrolyte; the method comprises the following steps: carrying out Fischer-Tropsch synthesis reaction, hydrocracking and isomerization reaction on synthesis gas to obtain an isomerized oil-gas mixture, wherein heat energy generated by the reaction provides heating desorption heat; and carrying out gas-liquid separation on the heterogeneous oil-gas mixture to obtain combustible gas and an upgraded oil product, carrying out rectification operation on the upgraded oil product to obtain an SAF component and a heavy oil product, and carrying out oxygen-enriched combustion reaction on the combustible gas and oxygen to provide heating desorption heat or supply required heat energy. An integrated and flexible industrial technology platform is developed, carbon capture and conversion processes are seamlessly connected, full-chain optimization from CO2 removal to high-added-value product generation is realized, and self heat energy requirements and wastewater utilization can be met.

The invention discloses a combined processing technology of catalytically cracked gasoline, which belongs to the technical field of petrochemical engineering, and comprises the following steps: cutting the catalytically cracked gasoline into light component gasoline and heavy component gasoline; mixing the light-component gasoline with alkali liquor, continuously extracting with the alkali liquor, and collecting refined light-component gasoline; mixing the heavy-component gasoline with a hydrodesulfurization catalyst, carrying out hydrodesulfurization reaction, and collecting refined heavy-component gasoline; and mixing the refined light-component gasoline and the refined heavy-component gasoline to obtain a low-sulfur catalytically cracked gasoline product. The reinforcing material, the modified macroporous alumina, the organosilicon, the microcrystalline cellulose and the chitosan are mixed to form a cross-linked network structure aerogel as a hydrodesulfurization catalyst, stress generated under thermal shock of catalytically cracked gasoline can be absorbed and reduced, and the mechanical strength of the hydrodesulfurization catalyst is improved; the hydrodesulfurization catalyst has a large surface area and a porous structure, so that the specific surface area of the hydrodesulfurization catalyst is increased, and the desulfurization efficiency of the hydrodesulfurization catalyst is further improved.

The invention discloses an aviation kerosene quality online detection and optimization system based on a green hydrogen substitution technology, and relates to the technical field of quality detection, and the aviation kerosene quality online detection and optimization system comprises a quality monitoring module, an optimization control module and a carbon footprint tracking and verification module. The quality monitoring module monitors the purity of sulfide, aromatic hydrocarbon and hydrogen in real time through a multispectral and electrochemical sensor, determines the optimal mounting position of the sensor by combining hydrodynamic analysis, triggers early warning when the sensor exceeds the standard, and pushes the sensor to the optimization module. The optimization control module dynamically adjusts temperature, pressure and green hydrogen flow based on a deep reinforcement learning algorithm, constructs a multi-objective optimization model, maximizes sulfur removal efficiency, reduces energy consumption and carbon emission, and realizes closed-loop intelligent regulation and control; according to the method, the accuracy and real-time performance of aviation kerosene quality detection and regulation are improved, effective tracking and verification of the green hydrogen full-life-cycle carbon footprint are realized, and the green sustainable development of aviation kerosene production is promoted.

The present application relates to a kind of green olefin removal method completely replacing clay, which comprises under liquid phase continuous hydrotreating conditions, first, reforming generated oil is mixed with hydrogen through high-efficiency mixer, hydrogen is mixed with reforming generated oil intensively and quickly, and saturated hydrogen-dissolved reforming generated oil is obtained, the saturated hydrogen-dissolved reforming generated oil is sent into first hydrogenation reactor, first contact with nickel-containing catalyst, and the reaction product is then introduced into second hydrogenation reactor, and contact with noble metal-containing catalyst.Reformate is treated by olefin removal, and the product obtained mainly contains benzene, toluene, xylene and other aromatic hydrocarbons, the bromine index of which is less than 20 mgBr / 100g oil, and the loss of aromatic hydrocarbons is less than 0.1wt%.

The present invention relates to a process for producing a jet fuel composition (12), the process comprising: a) Processing an oxygenate stream (1) in an Oxygenate-to-Olefin (OtO) unit (2) to produce an olefin stream (3); b) Separating the olefin stream (3) in a fractionation unit (4) into at least a C2-olefin-rich stream (5), a C3-olefin-rich stream (6) and a C4+-olefin-rich stream (7); c) Dimerizing at least a portion of ethylene contained in the C2-olefin-rich stream (5) to C4-olefins in a dimerization unit (20), thereby producing a dimerized product stream (21); d) Processing an oligomerization feed (8) comprising at least a portion of the C4+-olefin-rich stream (7) and at least a portion of the dimerized product stream (21) in an oligomerization unit (9) to produce an oligomerized olefin stream (10); e) Hydrogenating at least a portion of the oligomerized olefin stream (10).

The invention relates to the technical field of waste tire recovery, in particular to a method and a system for preparing biological aviation fuel by hydrogenation of waste tire pyrolysis oil, a pretreatment unit is used for performing multi-stage filtration and preheating treatment on the waste tire pyrolysis oil; the hydrogenation reaction unit is used for carrying out hydrogenation reaction and shallow cracking reaction on the pretreated waste tire pyrolysis oil; the separation and purification unit comprises a hot high-pressure separator, a dechlorination reactor, a cold high-pressure separator, a hot low-pressure separator and a cold low-pressure separator, and is used for carrying out dechlorination reaction and gas-oil-water separation treatment on a product of the shallow cracking reaction; the circulating hydrogen unit is used for providing mixed hydrogen for the system; and the fractionation unit is used for fractionating the product separated by the separation and purification unit to obtain the biological aviation fuel. According to the method, the waste tire pyrolysis oil is converted into the biological aviation fuel by adopting a series hydrogenation process, so that the problem of waste tire treatment is solved, and high-value utilization of resources is also realized.

Integrated processes for upgrading a hydrocarbon condensate stream to enhanced value streams including splitting a desalted feed stream into a light cut, a middle cut, and a heavy cut. The light cut is provided to a steam cracker unit to generate a steam cracked gas stream, a C4+ hydrocarbon stream, and a C9+ hydrocarbon stream, the middle cut is provided to a first catalytic cracker unit to generate a first cracked product stream, and the heavy cut is provided to a second catalytic cracker unit to generate a second cracked product stream. The steam cracked gas stream is provided to an olefins separation unit to generate at least one light olefin stream. Other effluents from the olefins separation unit and the steam cracker unit are provided to a hydrogenation unit, an aromatic extraction unit, or recycled within the system.

Systems and methods are provided for production of renewable jet fuel and / or jet fuel blending component fractions using a single stage reaction system. Although only a single separation stage is used, the systems and methods can reduce or minimize the volume of feedstock that is exposed to hydrocracking conditions while still producing a jet boiling range fraction having beneficial cold flow properties.

The present invention relates to a process for producing a jet fuel composition (12), the process comprising: a) Processing an oxygenate stream (1) in an Oxygenate-to-Olefin (OtO) unit (2) to produce an olefin stream (3); b) Processing an oligomerization feed (8) comprising at least a portion of the olefin stream (3) in an oligomerization unit (9) to produce an oligomerized olefin stream (10); c) Hydrogenating at least a portion of the oligomerized olefin stream (10); wherein a fraction of the oligomerized olefin stream (10) is withdrawn as a recycle stream (40a, 40b) and passed to a steamcracking unit (41) to produce a steamcracking product stream (42), wherein at least a portion of the steamcracking product stream (42) is included in the oligomerization feed (8).

The invention relates to the technical field of biological aviation kerosene, and discloses a process for preparing biological aviation kerosene from waste grease. The method comprises the following steps: introducing waste oil into a hydrofining reactor, introducing hydrogen, carrying out a hydrodeoxygenation reaction under the catalysis of a hydrogenation catalyst, carrying out a reaction on the obtained hydrodeoxygenated oil in an isomerization pour point depressing reactor, and finally carrying out isomerization hot high-pressure separation treatment, isomerization cold high-pressure separation treatment and rectification tower segmentation to obtain the biological aviation kerosene. The specific surface area of a carbon matrix of the hydrogenation catalyst is large, the void structure is rich, a large number of Ni-Mo-P active catalytic centers can be exposed, precious metals such as platinum and ruthenium do not need to be added, the hydrodeoxygenation reaction efficiency of waste oil and fat is remarkably improved, the mass fraction of branched paraffin and cycloparaffin in biological aviation fuel is high, and the combustion performance is better.

A process for improving yield of kerosene and / or diesel from a renewable feedstock involves hydrotreating a renewable feedstock and hydroisomerizing the hydrotreated liquid. The isomerized effluent is separated to produce an offgas stream, at least one fuel stream having a desired boiling point range, and a heavy fraction having a boiling point greater than the desired boiling point range. The heavy fraction is passed to a hydrocracking zone to produce a hydrocracked effluent. The hydro-cracked effluent is passed to the hydroisomerization zone.

A method for producing liquid organic hydrogen carriers (LOHCs). The method includes passing a hydrocarbon feed stream rich in aromatics to a thermal treatment unit to convert olefinic compounds to heavier compounds through dimerization reaction and generate a dimerized feed stream; passing the dimerized feed stream to a fractionation unit to form a light fraction stream and a heavy fraction stream split at 115° C. to 150° C.; and passing the light fraction stream to an aromatics extraction unit to form an aromatic compounds stream and a non-aromatic compounds stream. The method also includes passing the aromatic compounds stream and an input hydrogen stream to a hydrogenation unit to form a hydrotreated effluent stream; and passing the hydrotreated effluent stream to a separator to remove unsaturated compounds to isolate the saturated compounds as a LOHC stream.

A process for preparing middle distillates from an olefinic feedstock, bya) oligomerization fed with the olefinic feedstock, a first recycle and a second recycle, and operated in the presence of at least one oligomerization catalyst, to produce a reaction effluent containing dimers, trimers and oligomers;b) fractionating the reaction effluent into:a light fraction containing at least part of the unconverted olefinic feedstock;an intermediate fraction containing at least part of the dimers and trimers; anda heavy fraction containing the oligomers;c) recycling by the preparation of a first recycle containing at least part of the light fraction; and a second recycle containing at least part of the intermediate fraction; and transfer of the first recycle and the second recycle to step a);d) hydrogenating at least part of the heavy fraction.

The present invention relates to a process for producing a jet fuel composition (12), the process comprising: a) Processing an oxygenate stream (1) in an Oxygenate-to-Olefin (OtO) unit (2) to produce an olefin stream (3); b) Providing an oligomerization feed (8) comprising at least a portion of the olefin stream (3) and at least a portion of an external C4+-olefin stream (30) comprising C4+-olefins; c) Processing the oligomerization feed (8) in an oligomerization unit (9) to produce an oligomerized olefin stream (10); d) Hydrogenating at least a portion of the oligomerized olefin stream (10).