153results 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.

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 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.

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)

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.

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 method for improving the recovery of styrene includes supplying a high-temperature liquid residue stream from a styrene monomer purification finishing system to a stripping tank. The high-temperature liquid residue stream includes styrene and a compound less volatile than styrene. The method includes introducing a gas into the stripping tank to strip a portion of the styrene as vapor, generating a vaporized styrene portion, returning the vaporized styrene portion and the gas to the styrene monomer purification finishing system, recovering at least a portion of the vaporized styrene portion into the styrene monomer product, and generating a final liquid residue stream having a styrene concentration lower than the high-temperature liquid residue stream supplied to the stripping tank from the bottom of the stripping tank.

The utility model provides a petrochemical engineering tower, which relates to the field of petrochemical engineering and comprises a chemical engineering tower body, a filtering mechanism for filtering petroleum is arranged inside the chemical engineering tower body, and a connecting assembly for improving the stability of the filtering mechanism is arranged outside the chemical engineering tower body. According to the chemical tower, the effect of filtering impurities in crude oil is achieved, in the filtering mechanism, by arranging an electric heating wire arranged in a spiral line shape, the crude oil making contact with the chemical tower body can be fully heated, then a stirring rod rotates to scatter coagulated blocks in the crude oil, and then the impurities are adsorbed through an adsorption layer; impurities can be adsorbed while crude oil is fully heated, and the problem that the crude oil heating effect is low in the prior art is solved.

Methods and systems of using a catalytic heater unit to heat a wet crude oil to enhance processing of the oil. The methods and systems include using the catalytic heater unit to enhance separating a wet crude oil into a gas fraction, an aqueous fraction, and an oil fraction. The wet crude oil may pass through a two-way separator to separate a portion of the gas fraction from the aqueous fraction and the oil fraction prior to heating to a predetermined temperature in a catalytic heater unit. The catalytic heater unit may include a plurality of catalytic heating pads surrounding at least a portion of a plurality of oil stream channels. The heated wet crude oil then passes through a three-way separator to separate the remaining gas fraction, the aqueous fraction, and the oil fraction.

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 present disclosure provides a method of treating waste plastic pyrolysis oil, the method including: a first step of washing waste plastic pyrolysis oil with water and then removing moisture; a second step of mixing the waste plastic pyrolysis oil from which the moisture is removed and a sulfur source to prepare a mixed oil; a third step of hydrotreating the mixed oil with hydrogen gas in the presence of a hydrotreating catalyst; a fourth step of separating the hydrotreated mixed oil into a liquid stream and a gas stream to obtain liquid pyrolysis oil; and a fifth step of recovering hydrogen gas from the separated gas stream and recycling the recovered hydrogen gas to the third step.

The present invention belongs to the technical field of freeze concentration, and relates to a freeze concentration method. A plurality of freeze concentration devices based on the principle of negative correlation between melting point and solute concentration are combined in a certain manner to form a multi-stage freeze concentration system. By utilizing the low-temperature advantage of the solution obtained during the dissolution of each stage of freeze concentration, the energy consumption in the freezing process of the next stage of freeze concentration is reduced, and the energy utilization efficiency is improved, thereby enhancing the effect and efficiency of freeze concentration. At the same time, by using the heat of the dilute solution raw material itself and the heat dissipation of the freeze concentration device, the energy utilization efficiency can be further improved.

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.

A method of removing paraffin wax from a pyrolysis oil includes flowing the pyrolysis oil into a tank and reducing the temperature of the pyrolysis oil to a temperature that precipitates paraffin wax dissolved in the pyrolysis oil and forms (1) the paraffin wax in solid form and (2) the 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 includes heating the paraffin wax in solid form to form a paraffin wax in liquid form, and pumping the paraffin wax in liquid form to a second location. In this manner, the paraffin wax and the residual pyrolysis oil can be treated separately according to their respective properties.

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.