394results about "Hydrocarbon distillation" patented technology

A geothermally powered petrochemical refining system includes a geothermal system with a wellbore extending from a surface into an underground magma reservoir. A geothermally powered fractional distillation system receives crude oil and produces distillates which are separated by molecular weight. The distillates may be provided to a geothermally powered cracking system that is heated by a heat transfer fluid heated by the geothermal system to crack heavy hydrocarbons into lighter ones. The distillates may be provided to a geothermally powered reforming system that is heated by a heat transfer fluid heated by the geothermal system to reform hydrocarbons into different structures.

Embodiments of systems and methods to produce aviation fuel are disclosed. An example of a method to produce aviation fuel includes fractionating a renewable diesel feedstock in a fractionator to produce a C8− fraction, a C8-18 fraction, and a C18+ fraction. Additionally, the method includes providing the C8-18 fraction to an isomerization reactor to produce an aviation fuel product. The method includes supplying at least a portion of the C18+ fraction to a hydrocracking reactor to produce a hydrocracked product. The method further includes recycling at least a portion of the hydrocracked product to the fractionator for fractionating along with the renewable diesel feedstock.

Processes and systems for making recycle content hydrocarbons, including olefins, from recycled waste material. Recycle waste material may be pyrolyzed to form recycle content pyrolysis oil composition (r-pyoil), at least a portion of which may then be cracked to form a recycle content olefin composition (r-olefin). The r-olefin may then be further separated into product streams in a separation zone downstream of the cracker furnace. The presence of recycle content hydrocarbons may facilitate more efficient operation of one or more distillation columns in the separation zone, including the propylene fractionator.

The invention provides lubricant base oil and a preparation method thereof, and the preparation method comprises the following steps: carrying out a hydroisomerization reaction on Fischer-Tropsch wax with a distillation range of 400-550 DEG C under the action of a hydroisomerization catalyst, and then carrying out a hydrofining reaction and rectification under the action of a hydrofining catalyst to obtain the lubricant base oil, the preparation method of the hydroisomerization catalyst comprises the following steps: synthesizing a ZSM-48 seed crystal, preparing a ZSM-48 molecular sieve, forming a carrier, loading noble metal ions, roasting and the like. The hydroisomerization catalyst shows high isomerization selectivity for Fischer-Tropsch wax with a distillation range of 400-550 DEG C, and lubricating oil base oil with high viscosity index, low pour point and low cloud point can be prepared from the catalyst under the action of the hydroisomerization catalyst. The method for preparing the lubricant base oil not only has the advantages of high yield and simple preparation process flow, but also can produce high-quality 4cSt base oil and 6cSt base oil at the same time.

The invention belongs to the technical field of preparation of biological aviation kerosene, and particularly relates to a composite catalyst, a preparation method thereof and a preparation method of the biological aviation kerosene. The isomerization catalyst and the cracking catalyst are combined, the active site of the composite catalyst is optimized, the yield of the biological aviation kerosene and the proportion of isomerization products are increased, the catalyst cost is low, and the technological process is flexible and controllable.

The invention relates to the field of chemical rectification, in particular to a modular quick assembly type oil refining tower which comprises a plurality of sections of tower cylinders and a plurality of telescopic filler cylinders which are coaxially inserted into the tower cylinders. The lower limiting piece is arranged on the lower side of the inner wall of the tower drum and used for limiting the position of the bottom of the filler drum in the tower drum; the connecting rings are coaxially arranged between the adjacent tower barrels and used for connecting the adjacent tower barrels, the inner diameter of the connecting rings is smaller than that of the tower barrels, and a plurality of elastic pressing pieces with the outer sides capable of abutting against the inner circumferential walls of the tower barrels are evenly formed on the lower sides of the parts, extending into the tower barrels, of the connecting rings; the elastic inserting columns are evenly distributed on the upper side of the inner circumferential wall of the tower drum, and the elastic inserting columns are kept protruding out of the inner circumferential wall of the tower drum in a normal state and can retract to the inner circumferential wall of the tower drum after being pressed. The oil refining tower solves the problem of filler filling of a traditional oil refining tower so as to guarantee the effect of stable performance of the oil refining tower.

The present invention relates to a falling film distillation system for separating dichloromethane and white oil, which comprises a distillation tower and an evaporator, wherein the distillation tower comprises an upper tower body and a lower tower body; the evaporator comprises an upper tube plate and a lower tube plate respectively arranged at the top and bottom of the upper tower body and forming a closed evaporation chamber with the circumferential inner wall of the upper tower body, a plurality of evaporation tubes, and a steam supply component, wherein the plurality of evaporation tubes are arranged spaced apart from each other, and the upper ports of the plurality of evaporation tubes are connected to the liquid inlet pipe, and the lower ports are connected to the cavity formed by the lower tower body; the distillation system also comprises a gas-liquid separator that can be connected to the gas outlet pipe. The present invention adopts a falling film evaporator, the material residence time is short, the steam working pressure is small and the steam consumption is low, and the evaporated white oil concentrate has a low temperature, light color and high purity, and the evaporated dichloromethane gas is separated and subsequently condensed and dehydrated, and the white oil content in the dichloromethane is within 20ppm.

The invention relates to the technical field of fraction optimization, and discloses a catalytic isomerization-based fraction optimization regulation and control device and method.The catalytic isomerization-based fraction optimization regulation and control device comprises a rectifying tower, the outer wall of the rectifying tower is in through connection with an air inlet, the outer wall of the rectifying tower is in through connection with a liquid inlet, the outer wall of the rectifying tower is in through connection with a reflux inlet, and the top of the rectifying tower is in through connection with an air outlet; when a gas phase passes through the gas outlet, the gas phase jacks the floating valve shell to move upwards, makes contact with the inner wall of the top of the floating valve shell, is blocked by the limiting plate and flows out of the gas outlet groove, and a plurality of gas holes are formed in a catalyst, so that the contact time of the gas phase and the catalyst is prolonged; the problems that when a conventional float valve rectifying tower is used, the contact time of a gas phase in a catalyst layer is short, the deep isomerization reaction time of light naphtha is usually long, only low-carbon hydrocarbon isomerization or simple etherification reaction can be treated, and deeper catalytic isomerization cannot be carried out are effectively solved.

The present invention discloses a method for co-producing bio-aviation fuel from corncobs, which comprises the following steps: screening and pulverizing corncobs to control the particle size to be 10-15 mm; mixing the pulverized corncobs with furfural production wastewater containing acetic acid for hydrolysis reaction to generate a dilute furfural solution at 195-205 °C and 1.25-1.3 MPa; subjecting the solid residue after hydrolysis to alkali treatment to separate and obtain crude cellulose; subjecting the crude cellulose to acidolysis reaction by microwave heating in a solid acid catalyst and formic acid solution to generate a dilute levulinic acid solution; catalytically polymerizing the dilute furfural solution and the dilute levulinic acid solution under the action of a copper-based catalyst to generate a C10-C15 hydrocarbon mixture; generating a C10-C15 saturated hydrocarbon liquid mixture through oil-water separation and deoxygenation and hydrogenation reaction of a nickel-based catalyst; and finally through fractional distillation and activated carbon filtration; this method realizes the efficient co-production of furfural, cellulose and bio-aviation fuel from corncobs, and has the advantages of high raw material utilization rate, excellent catalytic efficiency, low energy consumption and environmental friendliness.

A process reacts olefins having 4 to 20 carbon atoms and the feed stream used, containing at least linear olefins and branched olefins, is distilled between two reaction steps and only the high-boiler phase obtained in this distillation is subjected to the second reaction, a heterogeneously catalysed hydroformylation, a homogeneously catalysed hydroformylation or a homogeneously catalysed alkoxycarbonylation.

The invention relates to the field of comprehensive utilization of biomass energy, and particularly discloses a process for preparing biological coal based on atmospheric distillation of biochar and biological oil, which comprises the following steps: performing atmospheric distillation on unpickled biochar or pickled biochar and biological oil to finally obtain light fraction and biological coal; biochar which is not subjected to acid pickling or biochar subjected to acid pickling serves as an in-situ catalyst, rich pores and oxygen-containing functional groups of the biochar can synergistically catalyze bio-oil to be subjected to condensation polymerization such as esterification and etherification, and finally the prepared bio-coal is good in combustion performance and high in productivity; the process is simple and controllable, and large-scale industrial production is expected to be carried out.

The apparatus may include a memory storing instructions and a processor configured to execute the instructions to determine an initial mass of the sample, distill the sample to at least a thermal destruction temperature, record vapor temperature values, liquid temperature values, and vapor pressure values ​​associated with the sample at a set of time points during the distillation, and determine a residual mass of the sample. The processor may be further configured to generate a pressure curve based on the vapor pressure values, calculate a summary integral surface of the generated pressure curve, and generate a distillation curve relating the vapor temperature values ​​and liquid temperature values ​​to a mass percentage of the sample evaporated based on the calculated summary integral surface, the initial mass of the sample, and the residual mass of the sample.

The present invention relates to a method and a system for producing aviation fuel. This method comprises the steps of: preparing FT synthetic oil as a feed; introducing the feed into a first distillation column for separating the feed into a plurality of fractions including an aviation fuel boiling point range fraction and an aviation fuel boiling point range exceeding fraction; introducing the aviation fuel boiling point range exceeding fraction into an HCK reactor to produce an HCK reaction product; recycling at least a portion of the HCK reaction product into the first distillation column; introducing the aviation fuel boiling point range fraction into an HDI reactor to produce an HDI reaction product; and recovering aviation fuel from the HDI reaction product.

The invention discloses a fluorine-containing aromatic polyamide film as well as a preparation method and application thereof, and belongs to the technical field of separation film materials. The invention aims to solve the problems of low flux and poor selectivity of the existing membrane material in non-polar solvent separation. The fluorine-containing aromatic polyamide film comprises a porous supporting layer and a fluorine-containing polyamide selection layer formed by interfacial polymerization, the invention discloses application of a fluorine-containing aromatic polyamide film in hydrocarbon separation. The membrane has excellent separation performance (toluene flux gt, 0.1 L.m <-2 >. H <-1 >. Bar <-1 > and TIPB rejection rate gt, 50%) on a toluene / TIPB binary system, can effectively separate complex multi-element organic compound mixtures, shows differential separation performance on different types of hydrocarbon compounds, realizes accurate screening based on molecular size and affinity, and can be used for separation of real crude oil. The method is simple in preparation process, mild in condition and easy for large-scale production.

A process for improving yield of kerosene from a renewable feedstock involves directing a to a lead stripper to separate a lead stripper bottoms stream comprising naphtha and higher boiling point range hydrocarbons and a lead stripper overhead stream. The lead stripper bottoms stream is passed to a naphtha recovery column to separate a vapor stream comprising naphtha and water in an overhead stream from a heavy hydrocarbon product stream. The vapor stream is condensed and water is removed to produce a product naphtha stream. Kerosene and diesel boiling point range product streams are separated from the heavy hydrocarbon product stream in a vacuum fractionator.

A refining apparatus for producing aromatic hydrocarbon solvents, comprising: a tank body (1); an inlet pipe (2), penetrating and being fixedly connected to a top of the tank body (1); a sealing cover (3), threadedly connected to the top of the inlet pipe (2); a first servo motor (4), fixedly connected to the top of the tank body (1); a fixed rod (5), fixedly connected to an output end of the first servo motor (4); two stirring paddles (6), fixedly connected to an outer circumference of the fixed rod (5); a driving gear (7), fixedly connected to the top of the outer circumference of the fixed rod (5); and a driven gear (8), rotatably connected to the top of an inner wall of the tank body (1), the driving gear (7) and the driven gear (8) being meshingly connected. The first servo motor (4) drives the two stirring paddles (6) to rotate, stirring and mixing raw materials to ensure uniform mixing of aromatic hydrocarbon solvents during a rectification process.

The invention provides a tire pyrolysis oil fractionation method, and relates to the technical field of chemical separation. Tire pyrolysis oil needs to be modified and upgraded due to the defects of high sulfur content, large viscosity and the like, and an existing modification method has the problems of harsh reaction conditions, high cost and the like. The method comprises the following steps: diluting the tire pyrolysis oil, putting the diluted tire pyrolysis oil into a feeding device, adjusting system pressure and molecular distillation equipment parameters for separation, recovering part of escapes through secondary condensation and cold trap condensation, and evaporating out a diluent by using a rotary evaporator to obtain light and heavy distillate oil. According to the method, efficient separation and nondestructive collection can be achieved, the modification effect and economic value of the pyrolysis oil are improved, and waste tire treatment modes are increased.

To provide a fuel supply system for driving a gas turbine cogeneration system using off-gas generated in a process in which bio liquid fuel is generated from biomass as fuel, and a fuel supply method for the gas turbine cogeneration system.SOLUTION: A fuel supply system includes: a fuel gas supply line for supplying fuel gas to a combustor of a gas turbine; a first off-gas supply device for supplying first off-gas generated in a fuel refining plant to the combustor; a second off-gas supply device for supplying second off-gas that is generated in a bio liquid fuel generation plant and has a heating value per unit mass smaller than that of the fuel gas to the combustor; a gas mixing device for mixing the fuel gas supplied by the fuel gas supply line, the first off-gas supplied by the first off-gas supply device and the second off-gas supplied by the second off-gas supply device; and a mixed gas fuel supply line for supplying the mixed gas fuel generated in the gas mixing device to the combustor.SELECTED DRAWING: Figure 4

A low-pressure condensed water treatment device of a naphtha separation system comprises a pressure-bearing tank and a condensed water output assembly, the pressure-bearing tank is located on the ground, a water inlet of the pressure-bearing tank is connected with a low-pressure condensed water main pipe of the naphtha separation system, and the condensed water output assembly is connected to a water outlet of the pressure-bearing tank. And a water inlet main gate valve is arranged on a pipeline between the water inlet of the pressure-bearing tank and a low-pressure condensed water main pipe of the naphtha separation system. The condensed water output by the naphtha separation system is collected through the pressure-bearing tank, steam contained in the condensed water is liquefied by increasing pressure, meanwhile, the pressure-bearing tank is placed on the ground to exchange heat with the ground, liquefaction of the steam in the condensed water is accelerated, it is guaranteed that no steam is contained in the output condensed water, and energy is saved. Therefore, leakage caused by flushing of pipelines and elbows is avoided, and stable operation of the naphtha separation system is guaranteed.

The invention relates to the technical field of rectification, and discloses a high-purity isoparaffin efficient rectification upgrading device for aerospace kerosene, which comprises a tank body, the surface of the tank body is fixedly connected with a motor, the output end of the motor is fixedly provided with a rotating rod, the right end of the rotating rod is fixedly connected with a first bevel gear, and the right end of the first bevel gear is fixedly connected with a second bevel gear; a rotating part is rotatably connected to the top end of the inner wall of the tank body, a connecting rod is fixedly connected to the bottom end of the rotating part, a second bevel gear is fixedly connected to the surface of the connecting rod, the second bevel gear is in meshed connection with the first bevel gear, and a rotating cylinder is slidably connected to the surface of the connecting rod. The rotating rod and the first bevel gear are driven by the motor to rotate, so that the second bevel gear and the connecting rod are driven to rotate, and the rotating cylinder and the fixed disc on the surface of the connecting rod are synchronously driven to rotate when the connecting rod rotates, so that the disturbance and mixing effects of gas and liquid phases between tower plates are enhanced, and the gas-liquid mass transfer efficiency is improved.

The utility model relates to the technical field of petrochemical engineering, and particularly discloses a cracking tail oil heat recovery system of a slurry bed residual oil hydrogenation device, which comprises a fractionating tower, a fractionating tower bottom pump, an aviation kerosene tower bottom heat exchanger, a debutanizer bottom heat exchanger, an isopentane tower bottom heat exchanger and a tail oil cold feed preheater, the fractionating tower bottom pump, the aviation kerosene tower bottom heat exchanger, the debutanizer bottom heat exchanger, the isopentane tower bottom heat exchanger and the tail oil cold feed preheater are sequentially arranged on the fractionating tower, and a tail oil discharge pipeline is arranged on the tail oil cold feed preheater. The tail oil temperature of the cracking device is reasonably utilized, the heat exchange process is optimized, efficient recovery of tail oil heat is achieved, the potential safety hazard of leakage of a heat exchange system of the isopentane tower is eliminated, temporary shutdown overhaul of the device caused by leakage of a heat exchanger is avoided, meanwhile, effective and stable control over the tail oil temperature is achieved, and the service life of the device is prolonged. The operation cost of tail oil air cooling is saved, and safe and stable operation of a heat exchange system of the device is effectively guaranteed.

The utility model relates to a device for recovering light hydrocarbon from plastic pyrolysis gas. The device comprises a first cooling unit, a second cooling unit and a light hydrocarbon collecting unit, wherein the first cooling unit and the second cooling unit are heat exchange elements serving as a light hydrocarbon collecting unit; the light hydrocarbon collecting unit is used for collecting light hydrocarbon from raw material gas generated by plastic pyrolysis, the plastic pyrolysis gas is retreated through the device, stable light hydrocarbon recovery is achieved, and good economic benefits are achieved.

The present invention is directed to a method for removing elemental mercury from liquid natural gas comprising changing the stabilizer column operating conditions to beneficially transfer mercury from the stabilized condensate phase to the overhead gas phase, where it may be compressed and recycled with the gas going to the existing feed gas mercury removal units.

The present invention provides a method of preparing a pyrolysis oil from waste plastics, the method comprising the steps of: (S1) supplying a waste plastic raw material to a first reactor to perform primary pyrolysis, and upwardly discharging a gaseous stream generated by the pyrolysis; (S2) supplying the overhead gaseous stream of the first reactor to at least one distillation column and separating the overhead gaseous stream by boiling point to obtain a stream containing a C5-12 light oil (LO), a stream containing a C13-22 middle oil (MO), and a stream containing a C23 or higher heavy oil (HO); and (S3) supplying a portion of the middle oil (MO)-containing stream separated in the distillation column to a second reactor to perform secondary pyrolysis, and supplying a gaseous stream generated by the secondary pyrolysis to the distillation column, wherein the primary pyrolysis and the secondary pyrolysis are each performed under high pressure conditions of 2-40 bar.

The present disclosure provides a method of purifying an organic material of biological origin, which includes providing a feedstock containing organic material of biological origin; purifying the feedstock in a pre-treatment step including heating the feedstock in a presence of an adsorbent at a temperature of at least 150° C., to obtain a heat-treated feedstock; filtering the heat-treated feedstock to remove adsorbent and to obtain a purified feedstock; and optionally subjecting the purified feedstock to further processing, wherein the purifying is performed in a cone vessel having a first cross sectional area in an upper part of the vessel which decreases downwards to a second cross sectional area, which is smaller than the first cross sectional area.

The present invention relates to a process for producing olefins and aromatics from a hydrocarbon feedstock comprising crude oil, the process comprising the following steps: a) an atmospheric distillation step; b) a fluid catalytic cracking step; c) a fixed bed hydrocracking step; d) a steam cracking step; e) a catalytic reforming step; f) an aromatics transformation and / or separation step; g) a one-step oligomerization and catalytic cracking step. Figure 1 to be published

The application discloses a hydroprocessing method and a hydroprocessing system. The hydroprocessing method comprises a first-stage hydroprocessing step, a middle-stage separation step and a second-stage hydroprocessing step under the condition of 4-15 MPa. The middle-stage separation step separates the effluent obtained in the first-stage hydroprocessing step into heavy components and light components. The second-stage hydroprocessing step processes the heavy components. The reaction raw material of the hydroprocessing method of the application comprises any one, two, three or four of crude benzene full fraction, heavy benzene, coal-based light hydrocarbon and coal tar. The hydroprocessing system is used for implementing the hydroprocessing method of the application. The application realizes two-stage hydroprocessing through the middle-stage separation processing, and effectively separates the heavy components and the light components, so that each reaction stage processes the corresponding best adaptation effect according to the different properties of the raw materials, and the best selection of each component in the raw material into the target product is ensured.

The utility model relates to the technical field of slurry bed vacuum towers, and discloses an anti-blocking structure for removing particles in ascending gas of a slurry bed vacuum tower, which comprises a tower body, six fillers are arranged in the tower body, the six fillers are BED1, BED2, BED3, BED4, BED5 and BED6 in sequence from top to bottom, the six fillers are longitudinally arranged at intervals in sequence, and the six fillers are arranged in the tower body. The top of each of the six fillers is provided with a filler pressing ring, the bottom of each of the six fillers is provided with a filler support and a truss girder, and the BED1, the BED2, the BED3, the BED4 and the BED5 are structured fillers. A traditional four-line oil collecting tank is changed into the design that the lifting cylinders incline towards the extraction opening and are not equal in height, so that under the condition that the extraction opening is blocked, liquid is accumulated to the height of the low lifting cylinder and overflows from the low lifting cylinder, the high lifting cylinder is reserved to enable gas phase to pass, and the gas-liquid shunting function of the oil collecting tank can still be reserved; and the conditions of entrainment and blockage of the gas raising cylinder caused by gas and liquid walking in the same place are avoided.

The present invention relates to a separator and a method for separating crude oil. The separator comprises: a shell and a second support member having a gap with the wall of the separation chamber, a first support member sealed and connected to the shell being spaced apart above the second support member along the height direction of the separation chamber; the second support member is an impermeable support member, and an overflow plate is provided at one end of the gap, the overflow plate, the second support member and the wall of the separation chamber together form a second phase separation zone; each first support member comprises a permeable support portion and an impermeable support portion, an overflow plate is provided between the permeable support portion and the impermeable support portion, so that the overflow plate and the wall of the separation chamber together form a first phase separation zone, and a decompression medium is provided in the first phase separation zone and the second phase separation zone. The separator of the present invention can separate different components in crude oil using carbon dioxide at a relatively low temperature.