24results about "Hydrocarbon distillation" patented technology

The application discloses a solvent separation and recovery process of a vinyl lubricating oil base oil, and comprises the following steps: step S1, obtaining organic solvent vapor and crude oil by removing the reaction liquid from a dissolving unit; step S2, obtaining refined solvent by refining the organic solvent vapor in a solvent rectification unit; step S3, obtaining tail gas condensate and tail gas non-condensable gas by condensing tail gas containing solvent vapor in a tail gas condensation recovery unit; and step S4, passing the tail gas non-condensable gas through a tail gas adsorption unit. The application mainly solves the problems of poor separation effect of reaction products, low product quality and inability to reach an industrial scale in the prior art.

A pyrolysis method and system are provided that may utilize a recycled plastic feedstock that comprises various types of waste plastics or a feedstock that comprises various types of waste plastics and at least one crude post-industrial liquid waste. The disclosed pyrolysis method and system may be configured to convert various types of waste plastics, including post-customer and post-industrial wastes, and / or crude post-industrial liquid wastes into useful pyrolysis oils.

The utility model relates to the technical field of petroleum chemical industry especially, relate to a kind of preflash heating's split quality feed device, the preflash heating's split quality feed device, including, storage tank, the storage tank outside is provided with shunt tank, the storage tank bottom is fixedly connected with support plate symmetrically, the support plate bottom is fixedly connected with bottom plate, feed mechanism, the storage tank bottom is installed with feed mechanism, feed mechanism can add material equally, the accurate equal addition of material is realized, effectively avoids the production fluctuation, quality defect or raw material waste caused by uneven feeding, for stable process flow, improve product consistency and optimize resource utilization rate provide reliable guarantee, separation mechanism, the shunt tank inside is installed with separation mechanism, separation mechanism can gas-liquid separation avoid the gas-liquid two item flow deflection, in heating furnace internal heating uneven and produce local hot spot coking;The utility model improves the use efficiency of device by the cooperation of feed mechanism and separation mechanism.

The present invention provides lubricant base oil and a preparation method therefor. The preparation method comprises: subjecting Fischer-Tropsch wax having a distillation range of 400-550°C to a hydroisomerization reaction under the action of a hydroisomerization catalyst, and then to a hydrofining reaction under the action of a hydrofining catalyst and rectification to obtain lubricant base oil, wherein the preparation of the hydroisomerization catalyst comprises the steps of: ZSM-48 seed crystal synthesis, ZSM-48 molecular sieve preparation, carrier forming, noble metal ion loading, calcining, etc. The hydroisomerization catalyst exhibits relatively high isomerization selectivity for Fischer-Tropsch wax having a distillation range of 400-550°C. Under the action of the hydroisomerization catalyst, the Fischer-Tropsch wax can be used to prepare lubricant base oil having a high viscosity index, a low pour point, and a low cloud point. The method for preparing the lubricant base oil not only has the advantages of high yield and a simple preparation process flow, but also can simultaneously produce 4cSt base oil and 6cSt base oil of relatively high quality.

Methods and systems for converting waste plastics into various useful downstream recycle content products are provided. More particularly, the present systems and methods involve integrating a pyrolysis facility with a cracker facility by introducing at least one r-pyrolysis gas stream into the cracker facility. In the cracker facility, the r-pyrolysis gas can be separated to form one or more recycle content products, and operation of the facility can be improved.

The utility model provides a distillation device for petroleum refining belongs to petroleum processing technical field to solve the problem that the flange hole position of tower body is difficult to fast accurate alignment when the existing atmospheric distillation column is in the upper and lower two tower body splicing, is affected by hoisting error, tower body dead weight, including distillation tower main part, fixed butt joint block, transmission box, lifting ring, auxiliary positioning assembly and protection assembly, a plurality of fixed butt joint blocks are fixedly connected in the front and back sides of the top of the tower body of distillation tower main part, a plurality of protection boxes are fixedly connected in the front and back sides of the top of the tower body of distillation tower main part, a plurality of auxiliary positioning assemblies are arranged in the inside and above a plurality of fixed butt joint blocks, and a plurality of protection assemblies are arranged on the top of a plurality of protection boxes, the utility model realizes the auxiliary accurate positioning when the tower body splicing, eliminates the flange butt joint deviation caused by hoisting error, drives the shielding plate protection lifting ring automatically when the auxiliary tower body positioning, reduces the corrosion risk.

The application discloses a heat exchange assembly and a hydrogenation system for diesel and wax oil hydrogenation, and the heat exchange assembly comprises a first heat exchanger, an inlet of a first heat medium channel of the first heat exchanger is used for inputting a first reaction effluent, an inlet of a first cold medium channel of the first heat exchanger is used for inputting a first reaction feed, and an outlet of the first cold medium channel is used for outputting the first reaction feed after heat exchange; a second heat exchanger, an inlet of a second heat medium channel of the second heat exchanger is communicated with an outlet of the first heat medium channel, an outlet of the second heat medium channel is used for being communicated with an inlet of a hot high separation tank, and an inlet of a second cold medium channel of the second heat exchanger is used for inputting a stripping tower bottom liquid; a third heat exchanger, an inlet of a third heat medium channel of the third heat exchanger is used for inputting a second reaction effluent, an inlet of a third cold medium channel of the third heat exchanger is communicated with an outlet of the second cold medium channel, and an outlet of the third cold medium channel is used for being communicated with downstream equipment; and a fourth heat exchanger. Compared with the prior art, the application can reduce equipment investment and improve heat exchange efficiency.

The present invention describes an improved method for synthesizing high value chemical products from low carbon synthesis gas. In one aspect, a method for producing chemicals is provided. The process includes: feeding a feedstock comprising hydrogen and carbon monoxide to a liquid fuel production reactor, the liquid fuel production reactor comprising a catalyst, thereby producing a product, the product comprising a liquid phase and a solid phase, the liquid phase being a C5-C 23 and an oxygenated hydrocarbon, said solid phase being C 24 -C 45 The liquid phase comprises 51 to 99% by volume of the product, and contains aliphatic hydrocarbons.

Process to mitigate the formation of unwanted polymers in a primary fractionator of a steam cracking plant, comprising: providing a feedstream comprising steam and one or more cracked hydrocarbons, providing a primary fractionator; injecting one or more anti-polymerizing additives having a boiling temperature in the range of 145 to 240 °C into the primary fractionator while passing the feedstream into the primary fractionator; recovering tars, pyrolysis oil, and gazole from the primary fractionator; and recovering vapor-phase effluent at the top of said primary fractionator.

The present invention pertains to an organic feedstock decomposition method comprising: a feedstock supply step for supplying, to a fluidized bed decomposition device, artificial carbon particles and an organic feedstock containing biomass and / or organic polymer waste; and a decomposition step for, while introducing a carrier gas into the fluidized bed decomposition device and fluidizing the artificial carbon particles, decomposing the organic feedstock and discharging the result with the carrier gas as a non-solid-state decomposition component, whereas solid residue generated by said decomposition is discharged separate from the non-solid decomposition component.

The heat exchange assembly comprises a first heat exchanger, a second heat exchanger, a third heat exchanger, and a fourth heat exchanger. An inlet of a first hot medium passage is used for importing a first-stage reacting product, an inlet of a first cold medium passage is used for importing a first-stage reacting feedstock, and an outlet of the first cold medium passage is used for exporting the first-stage reacting feedstock after heat exchange. An inlet of a second hot medium passage communicates with an outlet of the first hot medium passage, an outlet of the second hot medium passage communicates with an inlet of a hot high separation tank, and an inlet of a second cold medium passage is used for importing bottom liquid of a stripping tower.

A process for managing drilling waste, including pyrolyzing at least a portion of the drilling waste in a pyrolysis reactor to produce a stream comprising solid carbon and a gaseous pyrolysis product stream; and using heat present in at least a portion of the gaseous pyrolysis product stream to form electrical energy using an organic Rankine cycle, increase a temperature of a stream through heat exchange, or a combination thereof.

The utility model discloses a carbon five fraction equipment relates to petroleum processing technical field, including raw material storage tank, and raw material storage tank is connected with pumping system, and pumping system is connected with fractionating column, and raw material in raw material storage tank is transported to fractionating column in through pumping system, and the top of fractionating column is equipped with condenser, and the gas of fractionating column top is condensed into liquid through condenser, and the bottom of fractionating column is equipped with heater, and heater is used for heating raw material to the temperature required by fractionating column. The utility model discloses through optimizing the design of the filler or tray in the tower, effectively separates different boiling point components, ensures the high purity of carbon five fraction, and through reflux system and automation control system improves the process efficiency, adjusts temperature, pressure and reflux ratio in real time, ensures the best operating state of fractionation process, and exhaust gas treatment system handles exhaust gas through condensation and adsorption etc. mode, is equipped with complete safety system, such as pressure -relief valve, gas detection and fire alarm, ensures the safe operation of equipment and reduces environmental risk.

The application discloses a preparation system and method of sustainable aviation fuel, comprising at least one distributed pyrolysis unit and one centralized gasification and synthesis unit; the distributed pyrolysis unit comprises a pyrolysis reactor and a condensation oil collecting device connected in sequence, the pyrolysis reactor is used for pyrolyzing household garbage into pyrolysis gas, the condensation oil collecting device is used for condensing the pyrolysis gas into pyrolysis oil, and the non-condensable gas outlet of the condensation oil collecting device is connected with the gas inlet of the pyrolysis reactor; the centralized gasification and synthesis unit comprises a gasification furnace, a synthesis gas purifier, a Fischer-Tropsch synthesis reactor and a rectifying column connected in sequence, the gasification furnace is connected with the condensation oil collecting device and is used for conveying the pyrolysis oil into the gasification furnace for gasification; the synthesis gas outlet of the gasification furnace is connected with the synthesis gas purifier, and the synthesis gas purifier is used for removing CO2 in the synthesis gas; the Fischer-Tropsch synthesis reactor is used for preparing the synthesis gas into Fischer-Tropsch oil, and the rectifying column is used for processing the Fischer-Tropsch oil into sustainable aviation fuel, so that the carbon conversion rate and the yield of the sustainable aviation fuel are improved.

A process for managing drilling waste, including pyrolyzing at least a portion of the drilling waste in a pyrolysis reactor to produce a stream comprising solid carbon and a gaseous pyrolysis product stream; and using heat present in at least a portion of the gaseous pyrolysis product stream to form electrical energy using an organic Rankine cycle, increase a temperature of a stream through heat exchange, or a combination thereof.

The invention relates to the technical field of petrochemical engineering, and provides a crude oil steam cracking method, an evaluation system and an evaluation method.The evaluation system comprises a crude oil treatment device and a cracking and product separation device which are connected; the crude oil treatment device comprises a first flash evaporation unit, a second flash evaporation unit and a buffer unit, the first flash evaporation unit is connected with a raw material supply unit and a steam supply unit, the second flash evaporation unit is connected with the first flash evaporation unit, and the buffer unit is connected with the first flash evaporation unit; the cracking and product separating device comprises a cracking heating furnace, a liquid supply unit and a cooling unit, a convection section and a radiation section which are parallel are arranged in the cracking heating furnace, the convection section is respectively connected with the second flash evaporation unit and the buffer unit, the liquid supply unit is connected with the convection section, and an outlet of the radiation section of the cooling unit is connected. The problem that the crude oil steam cracking process lacks flexible crude oil fraction separation and cracking process condition guidance can be solved, the crude oil steam cracking performance evaluation is completed, and an efficient steam cracking utilization scheme is obtained.

The invention relates to a method for producing hydrocarbon fluids from a fossil hydrocarbon feedstock and a waste oil, the method comprising: a) a first step of converting the fossil hydrocarbon feedstock in a first conversion section (Cunit) producing a converted hydrocarbon effluent, b) a second fractionation step in which the converted hydrocarbon effluent is fractionated in a second fractionation section (Funit) into at least one liquid hydrocarbon fraction, and optionally into at least one gaseous fraction. The waste oil is fractionated with the converted hydrocarbon effluent in the second fractionation section (Funit).

The invention relates to a method concerning hydrocarbon fluids from a fossil hydrocarbon feedstock and a waste oil, the method comprising: a) a first step of treating the fossil hydrocarbon feedstock in a first treatment section producing a hydrocarbon effluent, b) a second fractionation step in which the hydrocarbon effluent is fractionated in a second fractionation section into at least one liquid hydrocarbon fraction, and optionally into at least one gaseous fraction, and wherein: - the first treatment section is chosen from a first desalting section producing a desalted hydrocarbon effluent and a first atmospheric-pressure distillation fractionation section producing at least one bottom fraction, and - the desalted hydrocarbon effluent or the at least one bottom fraction is fractionated in the presence of at least part of the waste oil in the second fractionation section.

The utility model discloses a naphtha energy -conserving fractionating device, it includes base frame, the inner surface fixedly connected with heater of base frame, the outer surface of heater is provided with oil inlet pipe, the upper surface of heater is provided with oil gas pipe, the oil gas pipe is provided with processing box away from one end of heater, the right surface of processing box is provided with the communicating pipe, the communicating pipe is provided with fractionating column away from one end of processing box. Through setting motor, pivot and stirring shaft, can carry out sufficient stirring to the naphtha that enters the inside of heater to reduce temperature gradient to improve heat transfer efficiency, make the naphtha in the inside of heater reach the required temperature faster, finally reduce heating time, reduce energy consumption, through setting filter screen, can remove the impurity in oil gas to improve the purification effect of naphtha, and through setting the structure such as insertion slot, buckle seat and buckle assembly, can dismantle filter screen whole to improve practicality.

This application discloses a continuous waste oil recycling device for a venting tower. The device includes a quench system and a coking tower top oil / gas line. The output of the quench system is connected to the coking tower top oil / gas line and then to the venting tower inlet. A spray device is installed inside the venting tower. The oil-throwing pipeline and the quenching oil pipeline are mixed and then output to the venting tower. A reboiler is located at the bottom of the venting tower. Medium-pressure steam is connected to the reboiler shell-side inlet, and the reboiler shell-side outlet is connected to the steam condensate pipeline system. The output of the reboiler tube-side is connected to the oil-throwing pipeline and the quenching oil pipeline. This application achieves a continuous rather than intermittent operation mode, avoiding the problems of bottom pump cavitation and top reflux interruption caused by temperature fluctuations. It achieves continuous and stable operation of the venting tower, and without increasing the number of reaction towers, it not only achieves zero external waste oil discharge from the coking unit but also meets the external waste oil recycling requirements, greatly improving oil yield and reducing environmental pressure.

A method for preparing pyrolysis oil from waste plastics, the method including: (S1) feeding a waste plastic raw material to a first reactor, performing primary pyrolysis, and discharging an upper gaseous stream produced by the pyrolysis through an upper portion of the first reactor; (S2) feeding the upper gaseous stream of the first reactor to a distillation column and separating the upper gaseous stream according to boiling point to obtain a stream containing C5-12 light oil, a stream containing C13-22 middle oil, and a stream containing C23 or higher heavy oil; (S3) supplying a portion of the stream containing middle oil separated in the distillation column to a second reactor, performing secondary pyrolysis, and feeding a gaseous stream produced by the secondary pyrosis in the second reactor to the distillation column; and (S4) recycling the stream containing the heavy oil separated in the distillation column back to the first reactor.

This application provides an energy-saving atmospheric and vacuum five-tower distillation apparatus and method. The apparatus includes a primary distillation tower, a negative pressure tower, an atmospheric pressure tower, and a vacuum tower. The negative pressure towers include a first negative pressure tower and a second negative pressure tower. The tops of the first and second negative pressure towers are respectively connected to reflux devices for the first and second negative pressure towers. A reboiler is installed in the lower middle part of the first negative pressure tower. The pressure of the first negative pressure tower is higher than that of the second negative pressure tower. The addition of two negative pressure towers between the primary distillation tower and the atmospheric pressure tower allows for timely separation of vaporized gasoline and kerosene components, reducing the irreversibility of heating and cooling, and achieving energy saving. The negative pressure operation of the first and second negative pressure towers lowers the operating temperature within the two towers, which is beneficial for the utilization of low-grade heat in the system. This ensures that all gasoline components and some kerosene components of the crude oil are extracted before entering the atmospheric pressure tower, reducing energy consumption, improving heat utilization, and increasing the precision of crude oil separation.

The present invention relates to a process for producing hydrocarbons from a feedstock comprising organic material of biological origin comprising a) providing a feedstock comprising organic material of biological origin, b) pre-treating the feedstock in one or more pre-treatment stages to obtain a purified feedstock, c) subjecting said purified feedstock to pre-hydrotreatment to obtain a stream of partly hydrotreated feed, d) subjecting the stream of partly hydrotreated feed to hydrotreatment to obtain a stream of hydrocarbons, e) subjecting the stream of hydrocarbons to isomerisation to obtain an isomerised stream of hydrocarbons, and f) distilling the isomerised stream of hydrocarbons to obtain at least two fractions, a first heavy bottom fraction and a second middle fraction, which is collected as a product of hydrocarbons. The invention also relates to a hydrocarbon fuel composition.