208results about "Refining by heating/cooling" patented technology

Systems and methods are provided for conversion of polymers (such as plastic waste) to olefins and / or feedstocks that can be further processed for formation of olefins, fuels, and / or other products. The systems and methods can include an optional thermal dehalogenation stage followed by an initial pyrolysis stage where a plastic feedstock is at least partially converted to lower boiling products. Prior to, during, and / or after the pyrolysis stage, one or more contaminant removal stages can be used in order to reduce the content of halides and / or other contaminants in the pyrolysis effluent. This can allow at least a portion of the pyrolysis effluent, such as a gas phase portion and / or a liquid phase portion of the pyrolysis effluent, to have a sufficiently low contaminant content to be used as part of a feed to a conventional petrochemical process.

An improved process for removing contaminants from low value waste fats and oils for the purpose of hydrodeoxygenation to diesel boiling range hydrocarbons. The method includes removing organically bound contaminants from fat, oil and grease (FOG) by adding water to the contaminated FOG stream, heating the mixture, and mixing to promote the reaction between the water and the FOG. The reacted FOG is then separated from the contaminants. The FOG of the reaction will result in reduced organically bound chlorine contaminants.

The present invention relates to a method and system for cracking crude oil, which includes sending crude oil to a first set of tubes in a convection section of a cracking furnace for preheating, then vaporizing the crude oil to obtain a first vapor phase and a first liquid phase, high-pressure extracting the first liquid phase to obtain non-asphalt oil and asphalt, mixing the first vapor phase and the non-asphalt oil with steam, or mixing the first vapor phase with the non-asphalt oil and then with steam, then sending it to a second set of tubes in the convection section of the cracking furnace to raise its temperature, then sending it to a radiant section of the cracking furnace to crack it to obtain cracked products, and separating the cracked products to obtain low-carbon olefins. In the present invention, crude oil is preheated and vaporized in a cracking furnace, and then the resulting vapor phase is passed into the cracking furnace. The resulting liquid phase is passed through a supercritical extraction section to separate the extracted oil, which is then passed into the cracking furnace. This method can effectively improve the cracking efficiency of crude oil, improve the yield of low-carbon olefins in the products, extend the operating cycle, and reduce the coking of the vaporized crude oil mixture in the cracking process.

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.

Processes and apparatuses for heating a hydrocarbon process stream, with an electric heater to provide a portion of the heat requirement necessary for a chemical reaction to occur to one of the components of the hydrocarbon process stream. The electric heater may be used between two reaction zones which are arranged on top of each other. Additionally, reaction zones may be in reactors which are arranged in a polygon.

A system for removing contaminants from a pyrolysis fluid is provided. The system comprises a recirculation loop and a bleed-off line. The recirculation loop comprises a quench vessel, a separation device, a recirculation line, and a cooling device. The quench vessel has a first inlet for receiving a supply of pyrolysis fluid, a second inlet configured to receive the recirculation fluid, and an outlet for discharging the quenched pyrolysis fluid. The separation device is for removing contaminants from the quenched pyrolysis fluid to provide a clarified stream, the separation device configured to receive the quenched pyrolysis fluid from the outlet. The recirculation line is configured to receive at least a recirculation portion of the clarified stream and recirculate the recirculation portion to the second inlet. The cooling device is configured to cool the fluid in the recirculation loop. The bleed-off line is for selectively bleeding off a bleed-off portion of the clarified stream from the recirculation loop.

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 invention provides an oil heating and centralized descaling system which is characterized in that a heating and descaling device is communicated with an on-site oil pipe, the heating and descaling device is used for heating and descaling crude oil pumped out from a well, and when the heating and descaling device is cleaned, a liquid storage device is used for temporarily storing oil liquid in the heating and descaling device; the liquid inlet pipe is communicated with an on-site underground oil pipe; water is pre-stored in the water jacket box, and the water jacket box conducts heat preservation on the water in the water jacket box. And a plurality of groups of heating and descaling generators are arranged in water of the water jacket box. According to the invention, water bath oil heating and oil descaling are combined, on the basis that the oil heating requirement is met, the centralized descaling function is added, scales in liquid are forced to be formed in the generator in a centralized manner, and a rear-end process device is protected from scaling; besides, before one set of heating descaling generator is cleaned, oil in the set of heating descaling generator can be discharged into the liquid storage device firstly, then cleaning is conducted, and the oil is prevented from being polluted.

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 invention relates to a light oil separation system. The purpose of the present invention is to separate light oil from pyrolysis oil generated by pyrolysis, to enable continuous production of pyrolysis oil products having a required flash point, thereby enhancing product competitiveness. For this purpose, the present invention comprises: a preheater which receives pyrolysis oil from a pyrolysis oil reduction apparatus and preheats the pyrolysis oil; a heater which heats the pyrolysis oil preheated through the preheater, to induce the removal of light oil from the pyrolysis oil through volatilization; a boiler which circulates heated water in each of the preheater and the heater to support preheating or heating of the pyrolysis oil; a condenser which receives the light oil removed from the pyrolysis oil through the heater and condenses same; a light oil storage unit configured to store the light oil condensed through the condenser; a cooler which receives the pyrolysis oil from which the light oil has been removed in the heater and supports the pyrolysis oil to cool it down; at least one filter which filters the pyrolysis oil cooled by the cooler, to obtain high-purity pyrolysis oil; a pyrolysis oil storage tank which stores the pyrolysis oil filtered through the filter; and a cooling water supply unit which circulates cooling water in each of the condenser and the cooler to support cooling of the pyrolysis oil or the light oil.

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.

Various methods and systems are disclosed, in one embodiment, including a method comprising: treating at least a plastic-derived pyrolysis oil in a desalter to at least form a desalted pyrolysis oil; heating the desalted pyrolysis oil; separating the desalted pyrolysis oil to form a gas phase and a liquid phase; steam cracking at least a portion of the first vapor phase in the presence of steam to form at least a cracked effluent; and separating the cracked effluent into at least an additional gas phase and an additional liquid phase.

The invention relates to a system for realizing oil production by hydrothermal liquefaction of oil-containing waste and supercritical water oxidation innocent treatment step by step and a start control method thereof, and the start control method specifically comprises the following steps: conveying a material to a primary heater through a material pump to heat, after reaching 350 DEG C, entering a secondary heater to maintain the temperature, then entering a reactor to perform hydrothermal liquefaction, and recovering an oil product; the liquefied waste liquid is subjected to supercritical water oxidation treatment, the oxidized waste liquid generates carbon dioxide and water, and the carbon dioxide and the water enter a cooler through an oxidation valve and then are discharged. In order to realize quick start, the invention provides two start modes: one mode is heating by injecting steam into the reactor, and the other mode is starting to heat materials through back pressure, and quick heating is realized by combining external heat tracing and cooling water. In addition, under the supercritical water oxidation working condition, stable operation of the reactor is ensured through accurate temperature and pressure control. According to the method, the starting time is effectively shortened, the treatment efficiency is improved, and good environmental protection and economic benefits are achieved.

A system and process for upgrading a hydrocarbon-based composition, that includes introducing the hydrocarbon-based composition into a reaction zone heated with electricity, concentrated solar radiation heat, nuclear reactor heat, geothermal heat, molten salt, molten metal, or combinations thereof; heating the hydrocarbon-based composition in the reaction zone to create a product stream; cooling the product stream create a cooled product stream, wherein: the reaction zone does not produce flue gas.

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.

The invention discloses a process and a device for improving the flash point of waste tire pyrolytic oil, and relates to the technical field of the flash point of the waste tire pyrolytic oil. The system comprises a raw material pump, a raw material heavy oil heat exchanger, a heavy oil pump, a raw material flue gas heat exchanger, a rotary heating evaporator, a horizontal storage tank, a vertical tower, a tower top water cooler, a receiving tank, a light oil delivery pump, a water cooler and a tower top return pipeline. According to the process flow and the device, the flash point of the heavy oil can be controlled between 45 and 70, the additional value of the tire pyrolytic oil can be improved, the economic benefit is remarkable, the original heating furnace is modified, the spray head is additionally arranged in the rotary heating evaporator, and after the tire pyrolytic oil passes through the spray head, the flash point of the heavy oil can be controlled between 45 and 70. Light components sprayed to the furnace wall of the rotary heating evaporator in an atomized mode are instantly gasified, heavy components enter the lower portion of the rotary heating evaporator heating furnace, and along with continuous feeding, the liquid level reaches the section of a discharging opening of the rotary heating evaporator heating furnace, and the heavy components are automatically discharged into the tank.

Provided is a continuous process for converting waste plastics into polypropylene for recycling. The process includes selecting waste plastics containing polyethylene and / or polypropylene and passing the waste plastics through a pyrolysis reactor to thermally decompose at least a portion of the polyolefin waste and produce a pyrolysis effluent. The pyrolysis effluent is separated into off-gas, a naphtha / diesel fraction, a heavy fraction, and a char. The pyrolysis oil and wax (including the naphtha / diesel fraction and the heavy fraction) are sent to a refinery FCC unit. A C3-C5 olefin / paraffin mixture of liquefied petroleum gas is recovered from the FCC unit and passed to a refinery alkylation unit. A propane fraction is recovered from the alkylation unit and passed to a dehydrogenation unit to produce propylene. The propylene is passed to a propylene polymerization reactor.

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.

Embodiments of the present disclosure are directed to a process for producing an upgraded product from a residue, including upgrading of an atmospheric or vacuum residue, comprising separating the residue by passing it through a solvent deasphalting (SDA) unit, which includes an asphaltene separation unit that separates the residue into an asphaltene pitch and a stream comprising deasphalted oil (DAO) and resin, followed by a resin separation unit that separates the stream comprising DAO and resin into separate DAO and resin streams, treating the resin stream with supercritical water (SCW) to produce an upgraded resin stream, and hydrotreating a portion of the upgraded resin stream and the DAO stream to produce an upgraded product.

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)

The efficient petrochemical filter comprises a filter shell and a support, a motor is fixedly connected to the outer wall of the top of the filter shell, a rotating shaft is rotationally connected to the top of the filter shell in an inserted mode, the top end of the rotating shaft and the output end of the motor are in key connection with bevel gears, and the two bevel gears are meshed with each other; a first scraper is fixedly connected to the outer wall of the rotating shaft, a filter plate is clamped to the inner wall of the circumference of the filter shell, the bottom end of the rotating shaft is rotatably connected with the filter plate in an inserted mode, the first scraper scrapes on the filter plate, a slag discharging pipe is connected to one side of the filter shell in an inserted mode, a baffle is slidably connected into the slag discharging pipe in an inserted mode, and a shifting piece is fixedly connected to the top of the baffle. The first scraping plate is driven by the rotating shaft to rotate, so that the first scraping plate is driven to scrape on the filter plate, impurities on the filter plate are discharged from the residue discharge pipe, a stirring mechanism does not need to be processed and moved out of the barrel, and the residue discharge device is convenient and fast to use.

The separation method of the hydrocarbon hydrogenation product containing ammonia, hydrogen chloride and / or hydrogen sulfide is particularly suitable for the condition that the flow rate of ammonia and / or the flow rate of water and gas is large in the hydrocarbon hydrogenation product, and can greatly reduce the amount of external washing water, greatly reduce the yield of acidic water, improve the heat recovery rate and reduce the content of organic matters in cold high-pressure separated water. The method is suitable for separation of warm high-pressure separated gas separated from hot high-pressure separated gas of coal hydrogenation direct liquefaction reaction effluent, the warm high-pressure separated gas is mixed with circulating auxiliary-temperature high-pressure separated water to form a mixture M-100 which is higher in water dew point temperature and has a large amount of liquid-water phase, and auxiliary-temperature high-pressure separated gas, auxiliary-temperature high-pressure separated oil and auxiliary-temperature high-pressure separated water are separated in the auxiliary-temperature high-pressure separation process through heat release of a heat exchanger HX-K; the secondary temperature high-pressure separation water is divided into two paths, one path is used as circulating secondary temperature high-pressure separation water, and the other path is used as a secondary temperature high-pressure separation water clean product which is usually mixed with secondary temperature high-pressure separation gas to form a mixed material M-500, and cold high-pressure separation water, cold high-pressure separation oil and cold high-pressure separation gas are separated in the cold high-pressure separation process after heat exchange and heat dissipation.

A method of recovering gaseous hydrocarbons from tank headspace as fuel on-site includes flowing a hydrocarbon gas composition from headspace of a tank fed by a secondary separator into a compressor to form a compressed mixture. The method includes flowing the compressed mixture into a cooling unit to cool the compressed mixture, to form a cooled composition including liquid hydrocarbons. The method includes flowing the cooled composition to a buffer tank to form a buffered fuel composition. The method includes removing a fuel gas composition from headspace of the buffer tank. The method also includes combusting the fuel gas composition as an on-site fuel.

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.