82 results about "Oxygenate" patented technology

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 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at least a portion of the oligomerized olefin stream (10); wherein a fraction of the oligomerized olefin stream (10) is withdrawn as a recycle stream (40a, 40b) and passed to a steamcracking unit (41) to produce a steamcracking product stream (42), wherein at least a portion of the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 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).

The present invention provides an integrated plasma catalytic system for biogas conversion comprising a plasma treated mesoporous or microporous catalyst and a plasma source for converting biogas containing methane and carbon dioxide to liquid oxygenates rich in methanol or acetic acid. Biogas from different solid wastes can be converted into liquid oxygenates including methanol and acetic acid under normal temperature and pressure conditions.

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) Processing an oligomerization feed comprising a first oligomerization feed stream (8a) containing at least a portion of the C3-olefin-rich stream (6) and a second oligomerization feed stream (8b) containing at least a portion of the C4+-olefin-rich stream (7) in an oligomerization unit (9) to produce an oligomerized olefin stream (10); d) Hydrogenating at least a portion of the oligomerized olefin stream (10); wherein the oligomerization unit (9) comprises at least a first reaction zone (9a), and a second reaction zone (9b) downstream of the first reaction zone (9a); wherein the first oligomerization feed stream (8a) is introduced into the oligomerization unit (9) at a position upstream of the first reaction zone (9a), and the second oligomerization feed stream (8b) is introduced into the oligomerization unit (9) at a position downstream of the first reaction zone (9a) and upstream of the second reaction zone (9b).

Processes for dehydrogenating normal paraffins derived from natural oils to olefins are described. The feed stream is passed through an adsorption bed comprising alkaline or alkaline earth cation exchange X-Zeolite to removes essentially all oxygenates and aromatics from the feed stream. One or more additional adsorbent beds having different adsorbents can also be included to remove additional oxygenates and aromatics as well as sulfur compounds, nitrogen compounds, phosphorous compounds, or combinations thereof. The dehydrogenation process can be part of a process for producing alkylbenzenes from natural oils.

The present invention discloses a method for deep dephosphorization of a chromium-nickel pig iron melt in an electric furnace, comprising: charging the chromium-nickel pig iron into an electric furnace and melting it into a chromium-nickel pig iron pre-melt; after the electric furnace is smelted clean, desiliconizing and dechromizing, adding a solid dephosphorizing agent, supplying oxygen through a furnace door oxygen lance, and adding lime to form slag; after stopping desiliconization and dechromization, skimming the slag and conducting electric furnace deep dephosphorization, adding a solid dephosphorizing agent, continuing to supply oxygen through the furnace door oxygen lance, spraying a powdered dephosphorizing agent through the electric furnace carbon powder lance, and adding lime to form slag; after completing the electric furnace deep dephosphorization, switching the furnace door oxygen lance to nitrogen for strong stirring. The present invention solves the technical problem of high cost caused by the difficulty of electric furnace dephosphorization of the chromium-nickel pig iron melt, which results in the need to use dephosphorized molten iron + pure nickel in stainless steel smelting. The present invention achieves the purpose of using cheap chromium-nickel pig iron as a raw material to prepare a low-phosphorus, high-nickel stainless steel mother liquor through electric furnace deep dephosphorization, and then producing a low-phosphorus special stainless steel variety by adding high-carbon ferrochrome to the low-phosphorus, high-nickel stainless steel mother liquor, thereby simplifying the production process and reducing smelting costs.

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).

Electrochemical CO2 upgrading into C2 oxygenates is achieved a membrane electrode assembly (MEA) cell comprising metal plates, an anion exchange membrane (AEM), a cathode and anode, wherein the cathode comprises nanoscale Cu and Ag nanoparticles on a hydrophobic carbon substrate, wherein CO2 is fed to the cathodic side and converted to C2 oxygenates at the electrocatalyst surface.

The application relates to a high-efficiency molecular sieve adsorbent for deep purification of oxygenates and preparation and application of the adsorbent, and the preparation process comprises the following steps: 1) molecular sieve synthesis: uniformly mixing an aluminum source, a silicon source, alkali, a template agent and water to obtain a crystallization liquid, aging, then carrying out microwave hydrothermal crystallization and traditional hydrothermal crystallization to obtain EMT / 13X mixed crystal molecular sieve, and then carrying out pressure filtration to obtain a wet filter cake; 2) granulation: drying the wet filter cake, uniformly mixing inorganic additives and pore-forming agents, rolling and granulating, and then drying; and 3) calcination: placing the granulated product in an oxygen-containing atmosphere for calcination, so that the EMT / 13X composite molecular sieve adsorbent is obtained. The application breaks through the double-template method for synthesizing the EMT / 13X mixed crystal molecular sieve with an EMT molecular sieve as the main component, complete structure and high crystallinity, the specific surface area of the molecular sieve is greater than or equal to 450 m 2 / g, ethylene adsorption heat is less than or equal to 70 DEG C, the oxygenate adsorption capacity is increased by more than 30%, the purification depth can reach below 1 ppb, and the molecular sieve is suitable for efficient removal of trace nonpolar or polar oxygenates such as dimethyl ether, methanol and propyl aldehyde in low-carbon olefins.

The present application provides a catalyst for preparing oxygen-containing compounds by olefin hydroformylation reaction, and a preparation method and use thereof, the catalyst is Fe x Co y M, the catalyst contains 0.1-15wt% M, 85-99.9wt% Fe and Co, the atomic ratio of x to y is 0.1-10, and M is a metal element. When the catalyst is used for preparing oxygen-containing compounds by olefin hydroformylation reaction, the conversion rate of olefin can reach 93-99.9%, and the selectivity of oxygen-containing compounds can reach 89-98.8%; and the catalyst is in a solid state during the reaction, which is easy to realize solid-liquid separation with the product, and also avoids the loss of the catalyst during the separation process.

The present disclosure relates to methods for producing hydrogen and calcium- or magnesium-bearing carbonates by capturing, converting, and storing carbon dioxide. The methods may include providing one or more calcium- or magnesium-bearing compounds; providing one or more water-soluble oxygenates; providing a plurality of catalysts; and reacting one or more calcium- or magnesium-bearing compounds and one or more water-soluble oxygenates with plurality of catalysts under conditions to produce hydrogen and calcium- or magnesium-bearing carbonates. The methods may include providing one or more calcium- or magnesium-bearing silicates; providing carbon monoxide; providing water vapor; and reacting one or more calcium- or magnesium-bearing silicates, carbon monoxide, and water vapor. The methods may include providing one or more calcium- or magnesium-bearing compounds; providing one or more water-soluble oxygenates; providing a catalyst; and reacting one or more calcium- or magnesium-bearing compounds and one or more water-soluble oxygenates with said catalyst.

A CO2-derived synthetic aviation fuel composition is disclosed comprising distilled paraffine, cycloparaffin and aromatic product mixtures and having an average carbon number between about 10 and about 11.4, and less than about 500 ppm oxygenates. Methods for converting CO2 and a reduction gas, such as H2 or a hydrocarbon, using a reduction catalyst and an aromatic catalyst into mixtures of paraffins, and aromatics into the CO2-derived synthetic aviation fuel are also disclosed.

The present invention relates to AB2O4 type mixed metal oxide catalyst system having spinel / inverse spinel structure with support. The present invention also relates to the process for preparation of mixed metal oxide catalyst system. More particularly, the present invention relates to a process for the partial oxidation of alkanes to value added products and corresponding oxygenates by using said AB2O4 type mixed metal oxide catalyst with support(s).

The present invention relates to AB2O4 type mixed metal oxide catalyst system having spinel / inverse spinel structure with support. The present invention also relates to the process for preparation of mixed metal oxide catalyst system. More particularly, the present invention relates to a process for the partial oxidation of alkanes to value added products and corresponding oxygenates by using said AB2O4 type mixed metal oxide catalyst with support(s).

A method for dehydration of a gas stream is disclosed. The method comprises contacting an oxygenate containing gas stream with a water stream in a contactor column to absorb the oxygenate and provide a washed gas stream. The washed gas stream is contacted with a first adsorbent in a first adsorbent layer to adsorb the oxygenate to provide a first contacted gas stream. The first contacted gas stream is contacted with a second adsorbent in a second adsorbent layer to adsorb water and provide a dehydrated gas stream.

A process for dehydrating ethanol to ethylene. The steps include: (a) reacting an ethanol feed stream over a dehydration catalyst to produce ethylene in a dehydration product stream; (b) separating said dehydration product stream into a product liquid stream comprising water and dissolved oxygenates and a product vapor stream of ethylene; (c) taking a bypass stream from said product liquid stream; and, (d) sending the bypass stream to the dehydration reactor bypassing a wastewater stripping column.

The invention provides a method for efficiently dephosphorizing converter slag by using electric furnace slag, which comprises the following steps: discharging the electric furnace slag after electric furnace smelting is finished, sampling and analyzing main chemical components of the electric furnace slag, and calculating the amount of active lime needing to be supplemented and added; the discharged electric furnace slag is conveyed to a converter area through a special slag tank with a heat preservation function, and the hot-state electric furnace slag is poured into a converter through a traveling crane; the method comprises the following steps: firstly adding scrap steel into a converter, then adding molten iron, supplying oxygen for blowing, finally adding active lime, adjusting the alkalinity of slag to 2.5-4.5, blowing to the end point, and tapping. According to the method, the low-phosphorus characteristic of the electric furnace slag is combined, the electric furnace slag has good interface reaction performance and dephosphorization capacity in the thermal state and is directly returned to the converter smelting process, lime consumption is reduced, efficient dephosphorization of the converter slag is achieved, efficient dephosphorization and resource utilization of the electric furnace slag are achieved, and the method has the advantages of saving energy, reducing emission, reducing cost, improving efficiency and recycling resources.

The present invention discloses a method for separating oxygenates from Fischer-Tropsch oil. A gaseous boron halide is introduced into the Fischer-Tropsch oil to cause the boron halide to undergo a complexation reaction with the oxygenates in the Fischer-Tropsch oil, thereby forming a heterogeneous system of the oxygenate complex and the Fischer-Tropsch oil. The heterogeneous system is then separated to obtain a deoxygenated Fischer-Tropsch oil phase and an oxygenate complex phase. The boron halide pressure in the system is 0.05 to 1 MPa. By controlling the amount of boron halide added, the boron halide can be complexed with the oxygenates in the Fischer-Tropsch oil to separate the oxygenates from the oil, while preventing the boron halide from causing polymerization of olefins in the oil.

A problem arises when purifying a triglyceridic and / or free fatty acid feedstock for renewable hydrocarbon production, where such feedstock comprises C2-C6 aliphatic oxygenates, as they are transferred to the aqueous wastewater during the course of the purification, and which contributes to the degree of pollution of the aqueous wastewater measured as the chemical oxygen demand. The aqueous wastewater is extracted with the purified feedstock for renewable hydrocarbon production, which reduces the chemical oxygen demand of the aqueous wastewater by extracting the C2-C6 aliphatic oxygenates therefrom, while maintaining the purified feedstock for renewable hydrocarbon production in a quality that can be directly processed in a hydrotreating step, where the extracted C2-C6 aliphatic oxygenates are also converted to valuable hydrocarbons.

A process for upgrading a bio-oil stream is disclosed. The process comprises reacting a bio-oil stream with hydrogen in the presence of a catalyst in a reactor to produce an upgraded bio-oil stream. A recycle oil stream is taken from the upgraded bio-oil stream. The recycle oil stream is recycled to the reactor to provide the upgraded bio-oil stream. Concentration of functional groups such as an oxygenate group in the recycle oil stream is measured. Based on the measurement of the concentration of the oxygenate in the recycle oil stream, the recycle rate of the recycle oil stream can be adjusted.

A process, a system, and an apparatus are provided for converting a lower alkane to an alkene. Oxygen and the lower alkane are provided to an ODH reactor to convert at least a portion of the lower alkane to an alkene. An ODH stream comprising the alkene, an oxygenate, steam, and a carbon-based oxide is produced. The bulk of the oxygenate is removed from the ODH outlet stream by non-dilutive cooling, with residual oxygenate being removed using dilutive quenching with a carbonate. Subsequently, separation of the carbon-based oxide from the alkene is achieved using a caustic tower, which also produces spent caustic in the form of a carbonate, which is then used as the carbonate for dilutive quenching. Dilutive quenching using a carbonate allows conversion of the oxygenate to an acetate, which can then be used to simplify separation of the oxygenate from water.

The present invention relates to a method for thermolytic fragmentation of a sugar into C1-C3 oxygenates, comprising cooling the fragmentation product downstream of the reactor to a cooling temperature of from 230° C. to 390° C. and then separating solids from the fragmentation product cooled to the cooling temperature. The present invention also relates to a system for performing the thermolytic fragmentation of a sugar into C1-C3 oxygenates. The method and the system are suitable for industrial scale production.

The invention relates to the technical field of green methanol preparation, in particular to a system and method for preparing green methanol through biomass gasification. The invention provides a method for preparing green methanol through biomass gasification. The method comprises the following steps: S1; placing the treated biomass raw material in a biomass gasification device, adding a metal oxide with a set mass into the reaction equipment, controlling the internal reaction temperature, and decomposing the metal oxide in the reaction equipment to generate a secondary metal oxide and O2; and then the generated O2 is conveyed into the biomass gasification device 3 to provide oxygen participating in the biomass gasification reaction. According to the method for preparing green methanol by biomass gasification, oxygen is supplied by decomposing the metal oxide catalyst instead of electrolyzed water, so that the system energy consumption and the investment cost are remarkably reduced, and meanwhile, the gasification efficiency and the economical efficiency of methanol synthesis are improved.

The invention discloses a sludge oxygen-enriched combustion system and a sludge oxygen-enriched combustion method based on oxygen concentration zoning regulation, which are characterized in that combustion zoning oxygen concentration setting is adopted for sludge with different characteristics, a differential oxygen supply mechanism is established, and two combustion zones with different oxygen concentrations, namely a low-oxygen combustion zone I and a high-oxygen combustion zone II, are constructed in a hearth of a combustion boiler; the oxygen concentrations of combustion gases introduced by the two combustion chambers are 28-32% and 35-42% respectively; the method comprises the following steps: pre-drying sludge, detecting the contents of C and H elements of the dried sludge in real time based on a near-infrared spectrometer, and marking the sludge with high and low C / H molar ratios as S1 type sludge and S2 type sludge respectively; the dried S1 type sludge is conveyed to the low-oxygen combustion zone I for combustion, and the dried S2 type sludge is conveyed to the high-oxygen combustion zone II for combustion. The oxygen production energy consumption is reduced by adopting relative low concentration aiming at the S1 type sludge, and the high heat efficiency is maintained; the problem of burnout is solved by adopting relative high concentration aiming at the S2 type sludge.

An integrated process for producing light olefins is disclosed. The integrated process includes passing a syngas stream and a hydrogen stream to a methanol synthesis section to provide a reactor effluent comprising methanol. The reactor effluent is separated into a vapor stream and a liquid stream comprising methanol. A liquid stream comprising methanol is passed to a methanol purification section comprising at least two distillation columns, a first distillation column and a second distillation column, to provide a methanol product stream. At least a portion of the methanol product stream is passed to an oxygenate conversion unit to provide an effluent comprising olefins. Reboiling heat is provided to the first and second distillation columns from a separation section of the oxygenate conversion unit.

A method can include oxidizing hydrocarbons (and optionally oxygenates with oxygenation states less than carboxylic acids such as alcohols, aldehydes, etc.), separating the oxygenated hydrocarbons into saponifiable species and nonsaponifiable species, and treating the saponifiable species (e.g., heat treating, hydrogenation, etc. such as to reduce unsaturated bonds to saturated bonds, to convert oxygenates with greater degrees of oxygenation than monocarboxylic acids into monocarboxylic acids, etc.).

The invention provides a device and a method for purifying and recycling water generated by a process for preparing aromatic hydrocarbon and low-carbon olefin from an oxygen-containing compound, and relates to the technical field of purification treatment. The purifying and recycling method comprises the following steps: washing water, olefin washing water and condensate between olefin separation sections are fed into a stripping tower after passing through a buffer tank, and concentrated water at the top of the stripping tower is fed into sump oil for recycling; purified water generated by the stripping tower is cooled by an air cooler and a heat exchanger and then is pumped into a rotational flow air flotation device for oxidation and flotation, the purified water of the stripping tower is fed into the rotational flow air flotation device, and ozone and the purified water pass through a rotational flow microbubble generator and then are fed into the rotational flow air flotation device; purified water clear liquid obtained through rotational flow air flotation is recycled, and gas-liquid-solid wastewater is fed into a gas-liquid separator to separate gas and solid-containing wastewater; liquid-solid wastewater obtained by underflow of the gas-liquid separator is fed into a filter pressing device for liquid-solid separation, recovery of a catalyst and reuse of purified water are realized, and the device and the system realize oxidation of organic matters and separation of fine particles.

The utility model provides ground torch equipment, which belongs to the technical field of solid waste recovery treatment and comprises a plurality of combustors, an air distribution pipeline, an exhaust gas pipeline, a water-sealed tank and a heat shield. The combustor is used for carrying out combustion treatment on the discharged combustible gas; an air outlet of the air distribution pipeline is connected with the combustor and supplies oxygen to the combustor; a gas outlet of the exhaust gas pipeline is connected with the combustor and conveys exhausted combustible gas to the combustor; the water-sealed tank is connected with a gas inlet of a gas discharging pipeline; a containing space is defined by the heat insulation cover and used for containing the combustor. The utility model solves the technical problem that black smoke is difficult to burn completely in the existing torch equipment, and has the characteristics of ensuring that hydrocarbons in the torch equipment are completely burnt and realizing low-noise smokeless combustion.

A method of making an electroactive nanocomposite material from a bioderived product comprising ash and char. The method includes removing silicon dioxide from a bioderived byproduct to form a silica-depleted bioderived byproduct having silicon dioxide at ≥ about 40% to ≤ about 65% by weight and hard carbon at ≥ about 35% to ≤ about 60% by weight. The method includes treating a surface of the silica-depleted bioderived byproduct in an inert environment to remove surface oxygenates to form an electroactive nanocomposite material comprising silicon dioxide and hard carbon. The method is free of any subsequent treatment at temperatures of greater than or equal to about 1,000°C after the treating. An electrode for an electrochemical cell includes an electroactive nanocomposite material comprising silicon dioxide and hard carbon formed by such methods derived from a silica-depleted bioderived byproduct.