101results about "Refining by heating/cooling" patented technology

Technologies for reducing the viscosity of heavy crude oil are disclosed. In embodiments the technologies utilize a combination of a processing additive composition (PAC) and hydrodynamic cavitation to produce an oil composition having a viscosity V2, wherein V2 is at least 40 % less than a viscosity V1 of untreated heavy crude oil. PACs, systems for reducing the viscosity of heavy crude oil using a combination of a PAC and hydrodynamic cavitation, and methods for reducing the viscosity of heavy crude oil with a combination of a PAC and hydrodynamic cavitation are also disclosed.

This invention belongs to the field of cryogenic concentration technology, specifically relating to a cryogenic concentration method. It involves freezing a dilute solution into a solid or solid-liquid mixture, using gas as an energy medium, and leveraging the solid structure of the frozen material's surface and interior. Heat is transferred to the frozen material by applying negative or positive pressure. Through dissolution and separation, solutions are collected in stages to obtain solutions of different concentrations. Solutions meeting the target concentration are transferred to the next stage; solutions not meeting the target concentration are reused to further increase the concentration. This method improves the efficiency of cryogenic concentration and separation purification, is simple to operate, and is suitable for applications in food, cosmetics, biopharmaceuticals, petrochemicals, metal processing, and environmental protection.

The application belongs to the technical field of freeze concentration and specifically relates to a freeze concentration device, which comprises a freeze-dissolution assembly and a negative pressure air extraction device. The freeze-dissolution assembly comprises a container, a container upper cover, a container bottom cover, and a gas guide hole and a negative pressure guide pipe channel arranged on the container upper cover. The negative pressure air extraction device comprises a negative pressure guide pipe port, a negative pressure guide pipe, a gas-liquid separation device, and a negative pressure air extractor. After a dilute solution is frozen into a frozen material in a solid state or a solid-liquid mixed state in the freeze-dissolution assembly, the negative pressure air extraction device is started, and gas enters the container as an energy medium to transfer heat to the frozen material for dissolution. The dissolved solution is segmented and collected, the solution meeting the target concentration is collected for standby, and the solution not meeting the target concentration is continuously frozen and dissolved by using the freeze concentration device to realize concentration of the dilute solution.

A method of removing paraffinic wax from pyrolysis oil that includes flowing pyrolysis oil into a tank and reducing the temperature of the pyrolysis oil to a temperature that causes the paraffinic wax that is in solution in the pyrolysis oil to precipitate and form (1) paraffinic wax in solid form and (2) remaining pyrolysis oil in liquid form. The method further includes pumping the remaining pyrolysis oil from the tank to a first location. The method then involves heating the paraffinic wax in solid form to form paraffinic wax in liquid form and pumping the paraffinic wax in liquid form to a second location. In this way, the paraffinic wax and the remaining pyrolysis oil can be processed separately according to their respective properties.

The present application relates to the technical field of fuel desulfurization, and particularly relates to a photo-thermal extraction catalytic oxidation desulfurization catalyst, a preparation method and application thereof. The raw material of the catalyst comprises [Mo6O 19 ](NC 18 H 36 )2, NH2-MIL-125(Ti) and g-C3N4, and the catalyst Mo6 / NH2-MIL-125(Ti) / g-C3N4 is prepared by using an evaporation solvent method, wherein the molar ratio of Ti in NH2-MIL-125(Ti) to Mo in [Mo6O 19 ](NC 18 H 36 )2 is 1:0.1-1.0. The evaporation solvent method used in the present application has simple preparation process, controllable morphology and high stability, and the prepared catalyst has excellent catalytic effect in a photo-thermal extraction catalytic oxidation desulfurization system, and can be widely used for industrial desulfurization of sulfur-containing fuels.

Process and apparatus for recovering a product stream from a waste plastic feedstock and reducing the endpoint of the product stream is provided. A polymer oil is produced as a product stream by pyrolyzing the waste plastic feedstock in a pyrolysis reactor to produce a pyrolysis reactor effluent and passing the reactor effluent stream to a contact condensing column. In the contact condensing column, the pyrolysis reactor effluent stream is separated into a vapor product stream and a liquid product stream. The vapor product stream is recovered from the condensing column and the liquid product stream is passed back to the pyrolysis reactor for further reduction.

A process and system for reducing contaminants contained within a contaminated feedstock includes mixing the contaminated feedstock with water and at least one of a metal scavenger or reactant to form a feedstock-water-reactant mixture; feeding the mixture under pressure into a hydrothermal purification reactor, where the mixture is exposed to heat, pressure, and turbulent flow conditions to cause rapid reaction of the inorganic contaminants with the metal scavenger or reactant to form inorganic salts that separate into the aqueous phase; maintaining the temperature, pressure, and turbulent flow conditions of the feedstock-water-reactant mixture for a predetermined space-time to prevent the organic portion of the feedstock in the mixture from undergoing conversion reactions and form a hydrothermal reactor effluent; and separating the effluent into an aqueous phase containing salts of the inorganic contaminants and an organic phase containing a lower concentration of inorganic contaminants than the contaminated feedstock.

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.

The utility model discloses a water bath heating and filtering device which comprises a water bath filtering box, a filtering funnel is connected to the top of the water bath filtering box in an inserted mode, a fixing assembly is arranged between the filtering funnel and the water bath filtering box, and an electric heating pipe is fixedly installed in the water bath filtering box. And four supporting mounting columns are fixedly connected to the bottom of the water bath filter box. According to the utility model, water is added into the water bath filter box through the water inlet pipeline, the water level submerges the conical part of the filter funnel, and the three groups of electric heating pipes are started to heat the water in the water bath filter box; crude oil is poured into the filtering funnel, filtered through the filtering paper and then flows into the material receiving beaker to be collected, a worker observes the speed of the crude oil flowing into the material receiving beaker and judges the fluidity of the crude oil, and convenience is brought to follow-up mining.

The present invention relates to upgrading heavy petroleum oils, their residues, and / or polymeric materials. More specifically the present invention relates to a method for upgrading heavy petroleum oils, their residues, and / or polymeric materials by hydrothermal treatment with an aqueous solvent.

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.

A method for stabilizing whole crudes and condensate hydrocarbon mixtures. The method includes feeding a hydrocarbon mixture to a stabilizer column and separating the hydrocarbon mixture into an overhead offgas effluent and a stabilized hydrocarbon mixture; reboiling a stream from the stabilizer column with a heating medium, producing a reboiled stream; feeding the reboiled stream into the stabilizer column; heating a first side-stream from the stabilizer column with a stabilized hydrocarbon mixture from the stabilizer column, producing a heated first side-stream from the stabilizer column; and feeding the heated first side-stream into the stabilizer column.

The invention relates to a system (100) and a method for heating a hydrocarbon stream, comprising a combustion furnace (10) and at least one electric heating device (40) mounted upstream and / or downstream of the combustion furnace. The heating system includes a control system (50) configured to: - control at least one electric heating device (40) and the combustion furnace (10) to heat the hydrocarbon stream exiting the heating system to a target temperature, and - control at least one electric heating device (40) so as to maintain a temperature difference of the hydrocarbon stream between the inlet and outlet of the combustion furnace less than or equal to a threshold value. (Shorthand figure: Fig. 1)

Pitch particles may be produced by a grinding process, in which pitch fines may be recovered and recycled to a grinding apparatus as a pitch melt. Such methods may comprise: providing a petroleum pitch having a first softening temperature; grinding the petroleum pitch in a grinding apparatus below the first softening temperature to produce a plurality of pitch particles and a plurality of pitch fines; separating the pitch particles from the pitch fines; heating the pitch fines at a temperature above the first softening temperature to produce a pitch melt; and combining the pitch melt with the petroleum pitch in the grinding apparatus. The pitch melt hardens in the grinding apparatus and is reground. The pitch particles may be further stabilized by heating at a treatment temperature below the first softening temperature in an environment comprising about 1 mol % to about 20 mol % oxygen to form stabilized pitch particles.

A process for separating an olefin stream from a methane stream is disclosed. The process comprises providing an olefin stream comprising C2 and / or C3 olefins. The olefin stream is cooled in a heat exchanger with a mixed refrigerant stream to provide a cooled olefin stream. The cooled olefin stream is passed to a demethanizer column operating at an overhead pressure of about 344 kPa gauge (50 psig) to about 2069 kPa gauge (300 psig). The cooled olefin stream is fractionated in the demethanizer column to provide a demethanizer column overhead vapor stream and a demethanizer column bottoms liquid stream. The process provides an improved recovery / yield of olefins and also optimizes the cooling and / or heating of other process streams.

The invention relates to a method for extracting a wax from a pyrolysis residue, comprising the steps of (a) providing the pyrolysis residue, wherein the pyrolysis residue comprises the wax, (b) mixing the pyrolysis residue with a solvent at at least 30°C to obtain a mixture, wherein the wax is at least partially dissolved in the solvent, (c) cooling the mixture to crystallise at least one portion of the dissolved wax, (d) separating at least one portion of the crystallised wax from the mixture.

The invention relates to a treatment system (1) for treating at least one mineral oil, comprising a treatment circuit (2) having an inlet connected to at least one inlet tank (3) containing at least one mineral oil to be treated, and an outlet connected to at least one outlet tank (4) suitable for receiving at least one treated mineral oil. The treatment circuit includes at least one functional decontamination unit. The treatment system is notable in that it comprises: a functional additive assembly (ADD) designed to inject at least one additive into the treatment circuit, which mixes with the at least one oil to be treated to improve its properties; and a control unit (6) designed to regulate the dosage of the injected at least one additive based on several measurements of the intrinsic properties of the oil to be treated after decontamination. Abstract figure: Figure 2

The invention discloses a silicon network cross-linked polyether block polyamide pervaporation membrane as well as preparation and application thereof. The preparation method comprises the following steps: firstly preparing an n-butyl alcohol solution of Pebax, then adding siloxane and an alkali solution, carrying out solution crosslinking to obtain a crosslinked Pebax membrane casting solution, spin-coating the surface of a dried polysulfone ultrafiltration membrane with the crosslinked Pebax membrane casting solution, and drying to obtain the silicon network crosslinked polyether block polyamide pervaporation membrane. The preparation method disclosed by the invention is simple, the Pebax membrane which performs silicon network crosslinking through a one-pot method has the characteristics of short operation flow and high controllability, and the prepared silicon network crosslinked polyether block polyamide pervaporation membrane has relatively high permeability and selectivity and has relatively high adaptability to different feed concentrations.

The invention provides a method and a system for controlling ultralow emission of VOCs (Volatile Organic Compounds) of oil gas of an oil product. The oil product at least contains light components of at least one of C1, C2 and C3. The method comprises the following steps: S1, stripping light components of an oil product: stripping the light components in the oil product, taking the stripped light components as fuel gas for later use, and taking the light-removed oil product from which the light components are stripped as an adsorbent; step S2, elution of VOCs in the oil gas: enabling the oil gas to be treated to be in contact with the adsorbent in the step S1 so as to adsorb VOCs components in the oil gas to be treated, and obtaining rich oil containing the VOCs components and low-concentration oil gas with the VOCs components removed after absorption is completed; and S3, incineration treatment is conducted, specifically, the fuel gas obtained in the step S1, the low-concentration oil gas obtained in the step S2 and air are mixed in a multi-stage mode, multi-stage combustion treatment is conducted, and therefore emission tail gas with ultralow VOCs is obtained.

The disclosure relates to systems and methods for using waste heat to increase crude yield, reduce an amount of water in hydrocarbon products and enhance pipeline integrity in a gas oil separation plant.

Methods and systems are disclosed. Systems may include a crude oil feed, steam recovery system, and first heat exchanger. The crude oil feed may be configured to receive a flow of crude oil. The steam recovery system may be configured to receive a first flow of low-pressure steam and produce a first flow of condensed steam. The first heat exchanger may be disposed along the crude oil feed. The first heat exchanger may be configured to receive the flow of crude oil and the first flow of condensed steam and produce, using the first flow of condensed steam, a first flow of treated crude oil from the flow of crude oil.

The invention provides a method (100) for operating a system (1) comprising a centrifugal separator (2) for separating at least one liquid phase and a sludge phase from a liquid feed mixture. The method (100) includes alternating between a first mode of operation and a second mode of operation. The first mode of operation comprises the steps of: a) supplying (101) the liquid feed mixture to be cleaned to the centrifugal separator (2), the liquid feed mixture having a first temperature; and b) discharging (102) the at least one separated liquid phase from the centrifugal separator (2). The second mode of operation comprises the steps of: c) stopping (103) the supply of the liquid feed mixture to the centrifugal separator (2); and d) reducing (104) the temperature of the liquid feed mixture to a second temperature and / or reducing (105) the flow rate of the liquid feed mixture. The invention also provides a system (1) for separating at least one liquid phase and a sludge phase from a liquid feed mixture.

This invention utilizes mechanical vapor compression and / or thermal vapor compression, integrating compression loops across multiple process stages. A sequential network of compressors is used to increase the pressure and condensation temperature of vapor within each process stage as an internal vapor flow, and as an inter-vapor flow branching between process stages. Because available vapor is shared between compressor stages, the number of compressors can be reduced, improving economics. By separating vapor between compressor stages to balance the vapor mass flow rate across multiple process stages in the incremental compressor stages, the entire vapor compression system can be customized to individual process energy requirements and adapt to dynamic fluctuations in process conditions.

The present invention relates to an improved method for treating liquefied waste plastic, comprising: providing a volume of oil based on liquefied waste plastic; heat treating the volume of LWP-based oil; phase-separating the resulting heat-treated mixture volume into a first aqueous phase volume and a first oil phase volume; separating out a first aqueous phase volume; adjusting the pH of the first aqueous phase volume to a pH 9.0 or less; and separating the pH-adjusted volume phase into at least a second aqueous phase volume and a second oil phase volume.

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.

To improve anti-fouling performance during petroleum refinery operations of a petroleum feedstock which is heated at elevated temperatures during the refinery operation.SOLUTION: Fouling in a refinery vessel, such as heat transfer equipment, used in a petroleum refinery operation and in which a refinable petroleum feedstock is at an elevated temperature and in fluid communication with the refinery vessel during a petroleum refinery operation, is reduced by providing in the refinable petroleum feedstock an additive comprising (i) a poly(butylenyl)benzene sulphonic acid; or, (ii) a poly(propylenyl)benzene sulphonic acid; or, (iii) a combination of a poly(butylenyl)benzene sulphonic acid and a poly(propylenyl)benzene sulphonic acid.SELECTED DRAWING: None

The present invention relates to a process for extracting wax from a pyrolysis residue, the process comprising the steps of: (a) providing a pyrolysis residue wherein the pyrolysis residue contains wax; (b) mixing the pyrolysis residue with a solvent at a temperature of at least 30 DEG C to obtain a mixture wherein the wax is at least partially dissolved in the solvent; (c) cooling the mixture to crystallize at least a portion of the dissolved wax; (d) separating at least a portion of the crystalline wax from the mixture.

An improved method for removing contaminants from low-value waste fats and oils for the purpose of hydrodeoxygenation of diesel boiling range hydrocarbons. The method includes adding water to a contaminated FOG stream, subjecting the mixture to heating, and mixing to promote a reaction between the water and the FOG to remove organically bound contaminants from fats, oils, and greases (FOG). The reacted FOG is then separated from the contaminants. The reacted FOG results in a reduction of organically bound chlorine contaminants.

A method for reducing coke and coke precursor formation in supercritical water may include generating a supercritical water stream by heating and pressurizing feed water, mixing the supercritical water stream with the heated and pressurized feed oil in a mixing device to produce a combined feed stream, feeding the combined feed stream to a supercritical water reactor to produce an upgraded product, and separating the upgraded product from the supercritical water reactor. In one embodiment, the method comprises the steps of providing a supercritical reactor, producing a cooled, reduced-pressure upgraded product, separating the cooled, reduced-pressure product in a fractionator into a liquid hydrocarbon stream and a hydrocarbon vapor stream, condensing the hydrocarbon vapor stream with a cooling device to produce a light hydrocarbon-water mixture and a separate gaseous product, recycling the light hydrocarbon mixture to mix it with feed water upstream of the supercritical reactor.