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least a portion of the oligomerized olefin stream (10); wherein a fraction of the oligomerized olefin stream (10) is withdrawn as a recycle stream (40a, 40b) and passed to a steamcracking unit (41) to produce a steamcracking product stream (42), wherein at least a portion of the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

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 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 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.

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 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.

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.

The gasification furnace bar is of a square frame furnace bar structure formed by welding and splicing square pipes, round steel and strip-shaped steel plates, when the square pipes are spliced, two diagonal lines of square pipe openings are in a horizontal and vertical cross-shaped prismatic state, the square pipes are welded and spliced into a right-angle comb tooth shape, the round steel is welded between the comb teeth to adjust the distance between the furnace bars, and the strip-shaped steel plates are welded and spliced into the square frame furnace bar structure. A comb tooth end is welded and spliced into a square frame structure through strip-shaped steel plates to serve as a grate main body, a traditional grate is prone to being blocked by ash and charcoal fire fragments, air inlet and oxygen supply in a hearth are affected, air inlet is insufficient, combustion is incomplete, and fuel is wasted, a square pipe pipeline supplies oxygen through gasification holes, the charcoal fire fragments can be rapidly combusted, and the temperature of the hearth is increased; under the condition that an ash pool of the hearth is blocked, oxygen is directly and evenly supplied to a specific area in the hearth from the square pipe, the supplied oxygen can be conveyed to the position below a chimney smoke outlet at the topmost end of the hearth, oxygen is supplied for the last time for unburned firewood smoke which is about to be discharged from the hearth for combustion, and complete combustion is guaranteed.

The present specification describes an acid condensation catalyst comprising: a zeolite having a pore size of 10 tetrahedral atoms, a porosity of > = 0.05 mL / g in the range of 20-100, and a silica: alumina ratio (SAR) of 10 to 50; an alumina binder in which the zeolite is dispersed; and at least one metal; wherein the acid condensation catalyst has a porosity of > = 0.06 mL / g in the range of 20-100 measured by physical adsorption using the BJH method. Also described is a method for preparing the catalyst, and a process for acid condensation of a feed stream comprising one or more oxygenates, the process being performed in the presence of the catalyst as described.

A process for producing oxygenates from syngas is provided. The process involves mixing syngas with hydrogen sulfide, forming a syngas mixture; contacting the syngas mixture with a catalyst composition in a reactor to obtain a first product stream; splitting the first product stream into a non-condensable material stream and a condensable material stream; directing the non-condensable material stream back into the reactor; and directing the condensable material stream to a distillation column, producing a product stream having a high percentage of ethanol. The catalyst composition includes rhodium, lanthanum, gallium, vanadium and a support.

The utility model discloses an environment-friendly efficient fire observation heating furnace which comprises a furnace body, a hearth is fixedly arranged in the furnace body, the top end of the hearth is communicated with a waste gas chamber, a secondary oxygen supply channel is formed between the hearth and the furnace body, the top of the other end of the furnace body is fixedly communicated with a material adding opening, and one end of the material adding opening is hinged to a first furnace door through a first hinge. And a plurality of uniformly distributed first oxygen supply holes are formed in the middle of the other end of the furnace body. The secondary oxygen supply channel formed by the furnace body and the hearth is communicated with the second oxygen supply hole, and the secondary gasification combustion hole, the third gasification combustion hole and the fourth gasification combustion hole which are formed in the hearth are communicated with the secondary oxygen supply channel, so that substances such as smoke, dust and the like generated after fuel is subjected to primary combustion in the hearth are subsequently subjected to multiple combustion; the dust and smoke are effectively reduced, emission of the dust and the smoke is reduced, use is more environmentally friendly, meanwhile, sufficient combustion of fuel is guaranteed, and resource waste is avoided.

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.

The present application relates to a kind of biomass heating stove, comprising: bunker for storing fuel;Combustion chamber, including upper furnace and lower furnace, lower furnace is equipped with combustion cup and ignition mechanism;Feeding mechanism, for the combustion in bunker is transported to combustion cup;Air inlet mechanism, for air supply to combustion chamber;Multi-stage oxygen aid mechanism, including two-stage oxygen aid pipe and three-stage oxygen aid pipe, two-stage oxygen aid pipe is used to supply oxygen to lower furnace, and three-stage oxygen aid pipe is used to supply oxygen to upper furnace;Smoke exhaust mechanism, for the flue gas generated after combustion in combustion chamber is discharged;The present application can effectively reduce the smoke generation in the combustion process of biomass fuel, more environmentally friendly.

An integrated process for producing light olefins by integrating methanol purification with production of olefins from methanol. The methanol fed to the MTO process may be crude methanol or purified methanol in which the heavy oxygenates are removed and treated with the heavy oxygenates in the MTO effluent. By removing or reducing the need for methanol vendors to purify methanol, the cost of converting methanol to olefins or fuels will be reduced.

According to the efficient separation device for the coal-based high-purity alkane oxygen-containing compound and the use method of the efficient separation device, one end of a fixed pipe A (11) is connected with an infusion pump A (17), the other end of the fixed pipe A (11) extends into the upper part in a kettle body (1) along a through hole A formed in a kettle cover (2), one end of a fixed pipe B (22) is connected with an infusion pump B (21), and the other end of the fixed pipe B (22) extends into the middle part in the kettle body (1) along a through hole B formed in the kettle cover (2); according to the invention, coal-based high-purity alkane is in full contact with cleaning water in the kettle body, the high-power infusion pump A is used for extracting an upper-layer oil phase, and the low-power infusion pump B is used for extracting an upper-layer oil phase positioned at a lower-layer water phase interface; and after the upper-layer oil phase is extracted in one area, the upper-layer oil phase in other areas can timely supplement the liquid level height, so that the defect that the extraction is not thorough or the lower-layer water is extracted out due to too high extraction speed is avoided, and the economic cost is effectively reduced.