25results about "Vacuum distillation" patented technology

To provide a method for operating a distillation column that is compatible with various operations and saves energy.SOLUTION: A method of operating a distillation column and a distillation system comprises supplying at least one fraction distilled from the distillation column and / or a fraction corresponding to the one fraction to the distillation column in the distillation column that distills two or more fractions.SELECTED DRAWING: None

The invention relates to a process for treating biomass oil comprising: (a) a step of supplying biomass oil selected from biomass pyrolysis oil, biomass hydrothermal liquefaction oil, lignin oil, and mixtures thereof; (b) a step of oxidizing the biomass oil supplied in step (a) in the presence of an oxidizing agent at a temperature of 90 °C or lower, this step producing an effluent containing at least partially oxidized biomass oil and water; (c) a step of distilling the effluent from step (b) under reduced pressure, separating a distillate containing water from a residue under vacuum to form a stabilized biomass oil with a reduced water content. Figure 1

A system for refining crude oil to minimize emissions of toxic compounds in the atmosphere during refining. The crude oil is treated with viscosity-reductant additives, reducing viscosity by up to 50% and increasing API gravity by more than 2 points. The method of spray-cracking and vacuum-flashing of crude oil, the system separates light and heavy end chains within the reactor. The vapor is condensed into designer fuels using a multi-stage horizontal reverse condensate-condenser or closed-loop distillation tower. Process heater directs flue gases through high-salinity fluids, such as a brine-processing device to capture, sequester, or mineralize the CO2, CO, NOx, and other contaminants from the flue gases. This results in a significant reduction in emissions, a further reduction to near-zero emissions (>95-98%) is achieved by the combination of (1) the closed loop processes, tank blanketing and capturing, sequestering and mineralizing emitted flue gases from the heater combustion-exhaust.

The invention discloses a vacuum flash tower based on vacuum deep distillation and a crude oil processing system and method, and belongs to the technical field of petroleum refining. According to the method, vacuum residue at the bottom of a vacuum tower is subjected to secondary flash evaporation by additionally arranging a vacuum flash evaporation tower, and light components (mainly wax oil) in the vacuum residue are further recovered. The vacuum flash tower adopts a combined design of an upper packed tower section and a lower plate tower section, the packed tower section is used for absorbing light components, and the plate tower section is used for prolonging the residence time of residual oil. And part of vacuum third-line wax oil extracted from the side line of the vacuum tower enters the top of the flash tower as an absorbent, absorbs flash light components and then is refined back to the vacuum tower, so that the product quality is ensured. The vacuum flash tower and the vacuum tower share a vacuum system, and the tower pressure is maintained at 4 kPa. According to the method, the vacuum residue extraction rate is remarkably increased, vacuum equipment does not need to be additionally arranged, the problem that light-component metal and residual carbon exceed the standard in a traditional process is solved, and economic benefits are remarkable. The method is suitable for heavy crude oil processing and has the advantages of low equipment investment, simple operation and the like.

Low polynuclear aromatic hydrocarbon (low-PAH) naphthenic lubricating oils or process oils are produced within a viscosity range (including but not limited to 30 SUS to 6000 SUS) at 100 °F by the following steps: pretreating pyrolysis oil to reduce the amount of one or more of minerals, metals, halides, alkenes, or olefins (e.g., by hydroprocessing); blending the treated or untreated pyrolysis oil with naphthenic oil in a feedstock blending and storage unit to produce at least one blended feedstock; and hydroprocessing the blended feedstock to produce a low-PAH naphthenic lubricating oil or process oil. The hydroprocessing step can include reacting the pyrolysis oil with hydrogen in the presence of a non-noble metal catalyst, and the hydroprocessing step can include reacting the blended feedstock with hydrogen in the presence of a non-noble metal catalyst to produce a naphthenic lubricating oil or process oil.

The invention relates to an atmospheric pressure residual oil reduced pressure distillation-visbreaking combined processing device and method, the combined processing device comprises: (1) a reduced pressure distillation heating furnace, the reduced pressure distillation heating furnace comprises a feed port and a discharge port; (2) a reduced pressure distillation tower, a tower bottom discharge port of which is connected with a feed port of the reduced pressure distillation heating furnace through a pipeline; a feed port of the viscosity reducing tank is connected with a discharge port at the bottom of the reduced pressure distillation tower through a pipeline; (4) a visbreaking flash tank, the middle feed port of the visbreaking flash tank is connected with the discharge port at the top of the visbreaking tank through a pipeline; and (5) a bottom discharge port of the viscosity reduction flash tank is connected with a coking device or a solvent deasphalting device. By improving the processing device and process, a visbreaking heating furnace and heating energy of the visbreaking heating furnace are omitted, materials are efficiently modified, and the yield of high-value products is greatly increased.

Provided is a system for bio-oil utilization that can effectively exploit a bio-oil with ease without consideration of its properties and supply-demand balance while utilizing an existing oil refinery facility. The system for bio-oil utilization includes: an atmospheric distillation unit and a bio-oil-supplying mechanism; and at least one kind of unit selected from a gas-recovering unit, a hydrorefining unit, a naphtha-fractionating unit, a catalytic cracking unit, and a vacuum distillation unit. The bio-oil-supplying mechanism is configured to supply a bio-oil, which is derived from a biomass and is subjected to hydrodeoxygenation treatment, to the atmospheric distillation unit together with a stock oil containing crude oil.

The present disclosure provides a versatile process for producing valuable renewable hydrocarbons from triglyceride containing feedstock. In the stepwise process, the triglyceride containing feedstock is first split to provide a mixture comprising fatty acids, glycerol and water, from which a phase separation provides an oily phase, and an aqueous phase. Said oily phase comprising fatty acids is subjected to fractionation. Fractionation divides the fatty acids to specific fractions, which may be refined to products with controlled hydroprocessing. Products may comprise paraffinic renewable aviation fuel components, paraffinic renewable base oil, renewable paraffinic diesel fuel components, renewable paraffinic technical fluid, or any combination thereof.

The invention relates to the technical field of petrochemical engineering, in particular to a production method of straight-run environment-friendly asphalt. The method comprises the following steps that 1, low-density naphthenic low-sulfur crude oil and high-density naphthenic low-sulfur crude oil are blended into mixed crude oil according to a certain proportion, the low-density naphthenic low-sulfur crude oil accounts for 60%-80% of the mass of the mixed crude oil, and the high-density naphthenic low-sulfur crude oil accounts for 40%-20% of the mass of the mixed crude oil; and 2, carrying out atmospheric and vacuum distillation on the blended mixed crude oil to obtain a residual oil fraction with an initial boiling point of more than 460 DEG C, namely the straight-run environment-friendly asphalt finished product with toxic and harmful aromatic hydrocarbons meeting requirements. According to the invention, the content of toxic and harmful polycyclic aromatic hydrocarbons in the asphalt is effectively reduced, and the environmental protection performance of the asphalt product is obviously improved.

The invention discloses a method for extracting and removing a nitrogen-containing compound in fuel oil by using an acidic natural eutectic solvent. The method comprises the following steps: forming the acidic natural eutectic solvent from L-proline, mandelic acid and water, forming L-proline, ascorbic acid and water, and forming L-proline and glycollic acid / lactic acid; the method comprises the following steps: adding nitrogen-containing fuel oil and an acidic natural eutectic solvent into a reactor according to a certain mass ratio, and stirring at a certain temperature; standing and layering to obtain an upper-layer low-nitrogen oil product phase and a lower-layer nitrogen-rich eutectic solvent phase; and performing back extraction on the lower nitrogen-rich eutectic solvent phase to obtain a nitride-containing organic phase and a eutectic solvent phase, and performing reduced pressure distillation after liquid separation to obtain a nitrogen-containing compound and a regenerated eutectic solvent. The acidic natural eutectic solvent disclosed by the invention is simple in preparation process, easily available in raw materials, low in price, green and non-toxic, capable of efficiently removing alkaline and neutral nitrogen compounds in fuel oil at the same time, and excellent in cycle performance.

The utility model discloses a lubricating oil base oil vacuum distillation device and relates to the technical field of lubricating oil base oil treatment. A supporting pipe and a positioning ring are welded on the base, the positioning ring is connected with a gear motor through a bolt and a nut, a shaft of the gear motor is fixedly connected with a rotating shaft through a jackscrew, the rotating shaft is in sealing connection with a center hole of the blind plate through a sealing ring, the rotating shaft extends into a lower end socket of the reaction kettle and then is fixedly connected with a supporting frame, and steel brushes are fully distributed on the lower portion of the supporting frame. The reaction kettle has the beneficial effects that the rotatable support frame and the steel brush are arranged at the bottom of the reaction kettle, after vacuum distillation is finished, the speed reducing motor is firstly started, impurities adhered in the sealing head are cleaned through the steel brush, and then the petroleum residue inlet and outlet pipe is opened to discharge the impurities, so that the operation is convenient and fast. The gear motor is hung below the positioning plate through the compression spring, and torque is transmitted through the bolt, so that the steel brush cleans the reaction kettle under the self-weight action of the gear motor, the rotating shaft and the supporting frame, and the cleaning effect is improved.

The invention belongs to the technical field of asphalt deliming and purification, and discloses a distributed grading deliming process and device for high-ash oil residues, and the specific technical scheme is as follows: the process adopts a treatment mode of solvent dispersion, grading parallel filter pressing and solvent recovery, each stage of filter pressing unit is provided with a plurality of pressure-adjustable hydraulic drive plunger filter presses, and each stage of filter pressing unit is provided with a plurality of pressure-adjustable hydraulic drive plunger filter presses; graded deliming is realized through three-stage gradient pore diameters, common, superior and special-grade low-ash asphalt products are produced, and meanwhile, a high-solid component is subjected to solvent removal and converted into a solid fuel; according to the device, a pressure-adjustable hydraulic drive plunger filter press is adopted, the filter press comprises an air cylinder barrel, a connecting barrel and a filter barrel which are sequentially arranged, the connecting barrel is provided with a filter pressing feeding port, the connecting barrel and the filter barrel are separated through a metal filter plate, the filter barrel is provided with a filter pressing discharging port, and a filter pressing piston is connected into the air cylinder barrel in a sliding mode; according to the device, the pressure can be accurately adjusted, no waste filter bag solid waste is generated, and the treatment efficiency and the productivity are greatly improved.

Used lubricating oils are fed to a dehydration / fuel stripping unit to create de-watered / defueled feedstock which is fed to a Vacuum Distillation Column ( VDC) to remove and send lighter fractions for processing into base oil. Vacuum Tower Asphalt Extender (VI' AE) is collected from the Vacuum Distillation Bottom (VDB) of the VDC and fed to a Solvent Deasphalting unit (SDA) along with a. hydrocarbon solvent, to create a Concentrated Asphaltene Polymer Residue (CAPR) containing concentrations of the depleted polymer additives and wear metals. In particular embodiments, the CAPR is used to create relatively high- grade asphalt binders suitable for paving applications.

Assemblies, systems, apparatuses, and processes to enhance a fractionation or distillation process associated with a refining operation may include analyzing, via one or more spectroscopic analyzers, samples of a hydrocarbon feedstock supplied to one or more processing units associated with the refining operation, unit materials, and / or downstream materials. The assemblies, systems, and processes further may include prescriptively controlling, via one or more process controllers, based at least in part on feedstock properties, unit material properties, and / or downstream material properties, the one or more processing units, so that the prescriptively controlling results in causing the fractionation or distillation process to produce unit materials and / or downstream materials having properties within selected ranges of target properties, thereby to cause the fractionation or distillation process to achieve material outputs that more accurately and responsively converge on one or more of the target properties.

The invention discloses a waste mineral oil reduced pressure distillation device and method, and relates to the technical field of waste mineral oil recycling treatment.The waste mineral oil reduced pressure distillation device is characterized in that a vacuum pump is started for vacuumizing, so that the pressure in a distillation retort is reduced, waste mineral oil is injected into the distillation retort through a feeding pipe, and the waste mineral oil in a circulation channel of the feeding pipe is preheated and sprayed out through a heating pipe; the driving unit drives the rotating disc to rotate through the transmission unit, the smearing block on the rotating disc smears sprayed waste oil on the outer side wall of the feeding pipe, a thin oil film is formed, the heating area is increased, the waste oil is rapidly evaporated, the gap between the smearing block and the feeding pipe is adjusted through the adjusting mechanism, and therefore the smearing thickness is controlled, and the smearing efficiency is improved. The phenomenon that an oil film is too thin to cause coking or too thick to affect the evaporation effect is avoided, evaporated waste mineral oil is scraped out of the rotating disc through the scraper, and therefore reduced pressure distillation is conducted on the waste mineral oil.

The utility model relates to a kind of deteriorated substance separation device in organic heat carrier, including: rectifying kettle is connected with the input pipeline with first valve;Slag tank is communicated with the bottom outlet of rectifying kettle between inlet by slag pipeline with second valve;Product tank is communicated with the top outlet of rectifying kettle between inlet by product pipeline with cooler and third valve;The bottom of product tank is connected with the product output pipeline with fourth valve;Light component tank is communicated with the light component pipeline with fifth valve between inlet and product pipeline;The bottom of light component tank is connected with the light component output pipeline with sixth valve;Vacuum pumping device is communicated with rectifying kettle, slag tank, product tank and light component tank between vacuum pumping inlet;Temperature sensor is used to detect the temperature in rectifying kettle;Controller, its input end connects temperature sensor, its output end connects each valve and vacuum pumping device.

The invention relates to the technical field of synthetic lubricating oil, and discloses a method for preparing poly-alpha-olefin from a coal-based alkene mixture and recycling production wastewater. The method comprises the following steps: (1) carrying out polymerization reaction on a coal-based C8-C12 alkene mixture under the catalytic action of boron trifluoride, distilling the obtained reaction product, carrying out alkali washing on the separated heavy component, and carrying out oil-water separation; (2) carrying out hydrofining reaction on an oil phase separated in the oil-water separation process in the step (1) in a hydrogen atmosphere, and then carrying out reduced pressure distillation on a reaction product to obtain poly-alpha-olefin base oil; and (3) carrying out evaporation concentration on the wastewater separated in the oil-water separation process in the step (1), carrying out centrifugal separation on the obtained concentrated solution, adding a sodium tetrafluoroborate seed crystal into the separated solution, crystallizing and drying to obtain a sodium tetrafluoroborate crystal. The technical scheme provided by the invention can realize efficient recovery and utilization of fluorine resources in the production process of poly-alpha olefin.

Provided is a system for bio-oil utilization that can be used easily and effectively without considering the properties of the bio-oil or the supply-demand balance while utilizing existing refinery equipment, the system comprising a normal-pressure distillation device and a bio-oil supply mechanism, as well as at least one device selected from a gas recovery device, a hydrorefining device, a naphtha fractionation device, a catalytic cracking device, and a reduced-pressure distillation device, the bio-oil supply mechanism supplying a biomass-derived hydrodeoxygenated bio-oil to the normal-pressure distillation device together with a raw-material oil that contains crude oil.

A system is provided for upgrading an input stream 101 of straight run vacuum residue or cracked feedstock, including a vacuum tower 500, a hydrocracking unit 510, a high lift solvent deasphalting unit 520, a low lift solvent deasphalting unit 530, and a bitumen injection unit 540 or a pitch pelletizing unit 640, and optionally a hydrotreating reactor 750. The system and its components can deliver distillate and naphtha products, light ends products, an asphaltene lean heavy deasphalted oil stream 125, an asphaltene rich pitch stream 126, a light deasphalted oil that is a lubricant base oil feedstock, a heavy oil stream 137, a bitumen and asphalt stream 145, or a solid fuel. Further provided is a process including the steps of introducing straight run vacuum residue or cracked feedstock into the system and operating the system, the steps of operating the system including fractionation, solvent stage deasphalting, and hydrocracking.

The utility model relates to the technical field of petrochemical engineering, in particular to a vacuum tower for a slurry bed residual oil hydrogenation device, which comprises a tower body, a vacuum fourth distributor, a gas stripping distributor and a heavy wax oil line, a plurality of liquid collecting tower plates are arranged in the tower body from top to bottom at intervals, the vacuum fourth distributor comprises a vacuum fourth downward return pipeline and a vacuum fourth downward return distribution pipe, and the gas stripping distributor is arranged in the tower body. The gas stripping distributor comprises a steam inlet pipeline, an annular distribution pipe and two straight rod distribution pipes, the annular distribution pipe is arranged on the inner side wall of the tower body, and the two straight rod distribution pipes are arranged in the middle of the tower body. According to the device disclosed by the utility model, the two vacuum four-down-return distribution pipes are arranged, so that the vacuum four-down-return quantity is increased, the spraying effect is improved, the feeding temperature is reduced through a heavy wax oil line, slurry is diluted at the first time, the thermal stability of asphaltene is improved, and the probability of blockage of a gas stripping filter is reduced; and the tower bottom material retention time is shortened.

The utility model relates to the technical field of petrochemical engineering, and particularly discloses a heavy oil heating furnace which comprises a furnace body, a first radiation chamber and a second radiation chamber are arranged in the furnace body, a first branch furnace tube, a second branch furnace tube and a first radiation burner are arranged in the first radiation chamber, and a converging radiation furnace tube is arranged in the second radiation chamber. The converging radiation furnace tube is heated by flue gas in the first radiation chamber or is heated by arranging a second radiation burner in the second radiation chamber; the outlet ends of the first branch furnace tube and the second branch furnace tube are converged and connected with the inlet end of the converging radiation furnace tube, and the sum of the inner diameter sectional areas of the first branch furnace tube and the second branch furnace tube is larger than the inner diameter sectional area of the converging radiation furnace tube. The first branch furnace tube, the second branch furnace tube and the convergence radiation furnace tube are respectively provided with a group of injection ports which are arranged at intervals, the injection ports are connected with injection pipelines, and the aim of prolonging the maintenance period of the heating furnace can be fulfilled by reducing the coking area and the coking rate.

The present application relates to the technical field of crude oil molecular level physical analysis, and specifically discloses a process simulation optimization method and system for a molecular level crude oil atmospheric and vacuum distillation unit, which breaks through the limitations of traditional virtual component simulation by constructing a full distillation molecular library and a molecular level composition model, establishing accurate mapping of virtual components and molecules, and having the following advantages: 1) realizing two-way conversion between the molecular level and the macro level, improving the prediction accuracy of product molecular composition by accurately quantifying the mapping rules and the reliability of the mapping rules; 2) accurately predicting the macro properties and molecular composition of each side product by combining real-time data dynamic regulation, realizing process visualization, and enhancing the stability of the unit operation; 3) relying on a multi-dimensional process scheme matrix and parallel computing, efficiently screening the optimal scheme, taking into account the product yield and quality, and adapting to the downstream process requirements, which promotes the atmospheric and vacuum distillation unit to move from macro simulation to molecular level fine optimization, and significantly improves the process control efficiency.

The utility model relates to a light component removal device of organic heat carrier, including: light component removal cauldron, the upper part of which is connected with light component removal input pipeline, the bottom is connected with light component removal output pipeline, is equipped with first valve on light component removal input pipeline, is equipped with second valve on light component removal output pipeline, light component tank, the top part outlet of light component tank is communicated with the top part outlet of light component removal cauldron through light component pipeline, is equipped with cooler and third valve on light component pipeline, the bottom of light component tank is connected with light component output pipeline, is equipped with fourth valve on light component output pipeline, vacuumizing device, the vacuumizing mouth of which is communicated with light component removal cauldron and light component tank, temperature sensor is used to detect the temperature in light component removal cauldron, controller, the input end of which is connected temperature sensor, the output is connected first, second, third, fourth valve and vacuumizing device, is used to control each valve and the work of vacuumizing device according to the signal of temperature sensor output, the utility model can improve the precision of light component removal, reduce waste.

The application relates to a coal chemical oil product fractionation heating system and method, which comprises a dephenol tower system and a pressurized tower system, the dephenol tower system comprises a dephenol tower, a centrifugal machine, a phenol ammonia water tank, a raw material buffer tank, the raw material buffer tank is communicated with a dewatering tank, a multielement hydrocarbon raw material pipeline is further connected on a pipeline communicated between the two, and the dewatering tank is communicated with the dephenol tower; the top of the dephenol tower is communicated with a dephenol tower top reflux tank, the dephenol tower top reflux tank is communicated with a flare or fuel gas system, a phenol ammonia water tank and a light hydrocarbon tank area; the middle section of the dephenol tower is communicated with a reflux pipeline; the bottom of the dephenol tower is communicated with a bottom oil pipeline; the top of a vacuum tower is communicated with a vacuum tower top reflux tank and a flare or fuel gas system, the vacuum tower top reflux tank is communicated with a vacuum tower and a washing oil tank area; the middle section of the vacuum tower is communicated with a reflux pipeline; and the bottom of the vacuum tower is communicated with an asphalt tank area through an asphalt pipeline. The application greatly saves the use amount of low-pressure steam, reduces the discharge amount of sewage and reduces the operation cost.

The invention concerns a short-path evaporator (SPE) (1), comprising a housing (2) with: at least one evaporation section (4, 28), configured to be kept at an evaporation temperature (T1), at least one condensation section (6, 29) associated with the at least one evaporation section, configured to be kept at a condensation temperature (T3), a main inlet (5) for feeding a liquid (26) to be distilled to the at least one evaporation section, a distillate collection device (7) for collecting condensed distillate (8) from the at least one condensation section, a distillate outlet (9) for removing the condensed distillate from the housing, and a main outlet (17) for removing residue (10) from the at least one evaporation section from the housing.