245results about "Pyrolysis reactions" patented technology

A method / system, which can be modified from the Flexicoking™ process / system, includes introducing a heavy petroleum feed into a fluidized bed in a reactor and converting the feed via a coking operation within the fluidized bed, producing an overhead stream with entrained coke fines from the reactor overhead and solid coke from the base of the reactor. The method includes injecting the solid coke into a fluidized bed in a burner and combusting the solid coke in the burner, producing hot coke particles. The method includes recirculating a portion of the hot coke particles to the fluidized bed in the reactor, discharging the remainder of the hot coke particles from the base of the burner and a flue gas from the burner overhead, and passing the flue gas and a caustic dispersion to a venturi scrubber to obtain a scrubbed flue gas. More petroleum coke can be produced from the method / system.

The disclosure relates to the purification and treatment of oil produced from the liquefaction of waste polymer like for instance the pyrolysis of waste plastic via the polymerization of dienes prior to further treatments.

The invention relates to the technical field of tire treatment equipment, in particular to a waste tire cracking utilization device which comprises a cracking box, an upper cover is rotatably arranged at the upper end of the cracking box, a locking structure is arranged on the upper cover, and a cracking chamber for cracking waste tires is arranged in the cracking box. A heating mechanism for heating waste tires is arranged on the cracking chamber, an oil collecting tank matched with the heating mechanism is arranged at the lower end of the cracking chamber, a plugging mechanism matched with the oil collecting tank is arranged in the cracking chamber, and an upper cover is fixed by arranging a locking structure. The upper cover and the feed port of the cracking box form a sealing structure to prevent air permeation, and the plugging mechanism is arranged to plug the cracking chamber to form a sealing structure, so that air cannot enter the cracking chamber during reaction, the cracking chamber can be in an anoxic state, and liquid oil, gas and solid carbon black produced by cracking reaction are good in quality. The production efficiency is high.

A chemical method and chemical system that pyrolyzes a hydrocarbon feedstock (e.g., methane or natural gas) using a pyrolysis reactor to produce treated hydrogen gas at high gas temperatures. The pyrolysis reactor flows a high temperature fluid stream of pyrolysis products, including hydrogen gas and solid carbon products, to a heat exchanger to cool it into a low temperature fluid stream of pyrolysis products. A treatment system connected to the heat exchanger receives the low temperature fluid stream and generates treated hydrogen gas at low gas temperatures, which is then flowed back to the heat exchanger as a gas stream at low gas temperatures to be used as a working fluid to cool the high temperature fluid stream of pyrolysis gas. Advantageously, this exchange heats the gas stream at low gas temperatures, producing the treated hydrogen gas at high gas temperatures.

A reactor (12) and method for the conversion of hydrocarbons utilizes a reactor (12) having a unique feed assembly (56) that creates an inwardly spiraling fluid flow pattern of the feed gases to form a swirling gas mixture that passes through a conduit (46) with a constricted neck portion or nozzle (52). At least a portion of the swirling gas mixture forms a thin, annular mixed gas flow layer immediately adjacent to the conduit (46). A portion of the swirling gas mixture is combusted as the swirling gas mixture passes through the conduit (46) for conversion of hydrocarbons.

The present invention provides an electric heating device (1) comprising at least an electric furnace (2) having walls (2A, 2B) defining a space (3), a first row (4) of tubes (10) extending through the space (3), the tubes (10) having an inlet (11) and an outlet (12) outside the space (3), a second row (14) of tubes (10) extending through the space (3), the tubes (10) having an inlet (11) and an outlet (12) outside the space (3), and a first set (5) of electric radiant heating elements (20) disposed within the space (3), the first set (5) comprising electric radiant heating elements (20) disposed between the first row (4) and the second row (14) of tubes (10).

The disclosure relates to the purification and treatment of oil produced from the liquefaction of waste polymer like for instance the pyrolysis of waste plastics via the polymerization of dienes prior to further treatments.

Disclosed herein are methods for pyrolysis of plastic feedstock comprising post-consumer and / or post-industrial plastics. In various implementations, the methods include directing the plastic feedstock into an internal volume of a reactor vessel, and pyrolyzing the plastic feedstock in the internal volume of the reactor vessel.

The invention discloses a skid-mounted carbon fiber composite material fused salt pyrolysis recovery device, which is characterized in that all functional modules are integrated in a standard container skid-mounted base to form an independent unit capable of being integrally transported. The device comprises a fused salt pyrolysis reaction module, a post-treatment module, an oil gas treatment and waste heat recovery module and an integrated control system which are arranged in sequence. The core of the fused salt pyrolytic reaction module is an electric field damping type fused salt storage tank, the electric field damping type fused salt storage tank is of a double-layer structure, shaking of fused salt in the transportation and operation process is actively restrained by applying a controllable electric field, and safety and stability are guaranteed. The vacuum system is a graded vacuum regulation and control system, the vacuum degree can be dynamically regulated according to different pyrolysis stages, the inert reaction environment is efficiently maintained, and the energy consumption is reduced. And the oil gas treatment module realizes pyrolysis oil gas recovery and waste heat utilization. According to the carbon fiber composite material recycling device, movable, intelligent and efficient recycling of the carbon fiber composite material is achieved, and the transportation and treatment cost is reduced.

A production apparatus for cyclic esters, the production apparatus comprising: a barrel (10), which comprises a material chamber (101), and a feed inlet, a melt outlet (112) and at least one vacuum vent that are in communication with the material chamber (101); a hollow shaft (20) passing through the barrel (10) along a material feeding direction, wherein the hollow shaft (20) is provided with a medium chamber (201) therein; and several hollow disks (30) disposed in the barrel (10) along the feeding direction, wherein the hollow disks (30) are disposed on the outer periphery of the hollow shaft (20); and a medium flow channel (301) in communication with the medium chamber (201) is provided in each hollow disk (30), at least part of the medium flow channel (301) being a spiral from the outside to the inside, and / or the medium flow channel (301) comprising a plurality of parallel medium sub-channels (305). After entering the medium chamber (201), a heat medium flows into the medium flow channels (301) and is uniformly distributed within the hollow disks (30) via the medium flow channels (301). The hollow shaft (20) and the hollow disks (30) cooperate with each other to uniformly heat oligomers in the material chamber (101), thereby avoiding carbonization and coking caused by the non-uniform heating of the oligomers.

A process for converting hydrocarbons utilizes a reactor including a central axis, a feed assembly, and a reactor vessel defining a reaction chamber. A fuel gas feed and an oxidant gas feed are introduced into the feed assembly in a swirling fluid flow pattern, which combust to form a swirling combustion gas. A raw C4 hydrocarbon stream received from an upstream hydrocarbon processing system and a hydrocarbon reactant feed of liquid hydrocarbons are introduced into the central chamber. The liquid feed is introduced as a liquid spray in a flow pattern that is not perpendicular to the central axis. A hydrocarbon feed is mixed with the swirling combustion gas to form a swirling heated mixture that passes from the central chamber through convergent-divergent conduits and into the reaction chamber to react to form a converted hydrocarbon product.

In order to improve a device for heating a substance or mixture of substances, wherein the device has a heater with at least one heating element and at least one control device for controlling the at least one heating element, in such a way that the temperature can be set as precisely as possible even in high temperature ranges, it is proposed that the at least one control device has or consists of a frequency converter.

A process for converting plastic materials into pyrolytic oils, wherein: plastic materials are continuously fed into a preheating reactor to be mixed and preheated at a preheating temperature to obtain a pasty mixture; the pasty mixture is continuously transferred into a pyrolysis reactor to be heated at a pyrolysis temperature, under an anaerobic or inert atmosphere, to be converted into synthesis gases and a solid reaction product; the synthesis gases, containing condensable gases and uncondensable gases, are recovered on a first outlet located above the permeable bed, and the solid reaction product is recovered on a second outlet located below the permeable bed; the condensable gases of the synthesis gases are condensed into pyrolytic oils which are recovered.

The invention discloses an ammonia cracking reformed gas pretreatment device and an ammonia hydrogen engine combustion regulation and control method, and belongs to the technical field of automobiles. The first end of the direct injection assembly is selectively communicated with the liquid ammonia tank, and the second end of the direct injection assembly is communicated with the engine; the first end of the ammonia cracking hydrogen production assembly is selectively communicated with the liquid ammonia tank; the first end of the reformed gas injection assembly is selectively communicated with the second end of the ammonia cracking hydrogen production assembly, and the second end of the reformed gas injection assembly is communicated with the engine; the first end of the temperature swing adsorption assembly is selectively communicated with the second end of the ammonia cracking hydrogen production assembly, and the second end of the temperature swing adsorption assembly is communicated with the first end of the reformed gas injection assembly; and the heating device is arranged on the ammonia cracking hydrogen production assembly. According to the invention, the reformed gas can be separated and pretreated according to the combustion requirements of different working conditions of the engine.

Disclosed herein is a method for co-pyrolysis of a polyolefin and a rubber containing material comprising: operating at least a pyrolysis stage of a pyrolysis reactor at an operating temperature at or above the temperature at which pyrolysis of both the polyolefin and the rubber containing material commences and up to about 600° C. under a substantially inert atmosphere; feeding a mixture comprising the polyolefin and the rubber containing material into the pyrolysis reactor; co-pyrolysing the mixture in the pyrolysis reactor to produce a pyrolysis gas comprising volatile pyrolysis products of the polyolefin and the rubber, wherein the volatile pyrolysis product of the olefin comprises at least a short chain olefin and the volatile product of the rubber comprises at least a diene; and facilitating a gas phase reaction between the short chain olefin and the diene to produce a volatile gas comprising single-ring aromatic hydrocarbons.

Reactor configurations may include one or more staged inlets and / or one or more staged outlets for gaseous and solid feedstocks. In one embodiment of the present disclosure, a reactor design for gas-solid reaction with one or more additional outlet for gas and / or solid phase is provided. In yet another embodiment, the design for a gas-solid reactor with one side inlet and two outlets for gas phase is described. In one embodiment, a reactor design with pairs of inlet and outlet for both gas and solid phase is provided. In another embodiment, a reactor design with one or more side inlets but only one outlet for gas phase is provided. In yet another embodiment, a reactor design with two inlets at the top / bottom of reactor and two side outlets for gaseous phase is described. In yet another embodiment, a reactor design with one or more side inlets and outlets for both gas and solid phases is provided.

The invention discloses a catalytic reaction system for zero-carbon fuel pretreatment and straw co-pyrolysis. The catalytic reaction system comprises a co-pyrolysis reaction furnace, a zero-carbon fuel pretreatment device, a straw treatment device, a condensation collection device and a heat energy recovery device, the co-pyrolysis reaction furnace is provided with a microwave generator, and the zero-carbon fuel pretreatment device and the straw treatment device are respectively communicated with the co-pyrolysis reaction furnace; the condensation collection device comprises a condensation box communicated with the co-pyrolysis reaction furnace through a smoke exhaust pipe, a condensation pipe arranged in the condensation box, an oil collection tank communicated with the condensation pipe and a gas collection tank communicated with the condensation box, and the heat energy recovery device comprises a water tank forming a circulation loop with the condensation pipe and one or more preheating water pipes led out of the circulation loop. And the heat exchange section of the preheating water pipe is arranged in the interior or the shell of the pretreatment device and the straw treatment device. Heat energy of oil gas is recycled, zero-carbon fuel and straw are preheated, the pyrolysis efficiency is improved, and meanwhile resource waste can be reduced.

The invention provides a waste plastic pyrolysis device capable of efficiently dechlorinating. The waste plastic pyrolysis device comprises a spiral conveying unit for conveying raw materials and a dechlorinating unit communicated with the tail end of the spiral conveying unit, the pyrolysis unit is communicated with a discharge hole of the dechlorination unit; the solid product treatment unit is used for temporarily storing and treating solid products of the pyrolysis unit; the heating system is used for supplying heat to the dechlorination unit and the pyrolysis unit; the nitrogen system is used for providing nitrogen, and the condensation separation unit is used for purifying and separating gaseous products generated by the pyrolysis unit. According to the technical scheme, the dechlorination rate is improved in the mode that the dechlorination unit conducts preliminary pyrolysis dechlorination and the thermal filter conducts pyrolysis on residual chlorine in the pyrolysis gas, so that the technical problem that the chlorine content of produced waste plastic pyrolysis oil exceeds the standard at present is effectively solved, and device corrosion is prevented.

A process for converting hydrocarbons utilizes a reactor system including a central shaft, a feed assembly, and a reactor vessel defining a reaction chamber. A fuel gas feed and an oxidant gas feed are introduced into the feed assembly in a swirling fluid flow pattern, which combust to form a swirling combustion gas. A hydrocarbon reactant feed of liquefied natural gas (NGL), natural gas condensate or associated petroleum gas, and liquid hydrocarbons is introduced into the central chamber. The liquid feed is introduced as a liquid spray in a flow pattern that is not perpendicular to the central axis. A hydrocarbon feed is mixed with the swirling combustion gas to form a swirling heated mixture that passes from the central chamber through convergent-divergent conduits and into the reaction chamber to react to form a converted hydrocarbon product.

The application belongs to the technical field of waste fan blade pyrolysis recycling, and particularly discloses a waste fan blade pyrolysis recycling fiber reactor system and method, which comprises: sequentially arranged loading, pyrolysis and cooling sections, and automatic cut-off doors are arranged between the pyrolysis section and the loading section and between the pyrolysis section and the cooling section; tracks are respectively arranged in the loading, pyrolysis and cooling sections, the cut fan blades are loaded in the carrier vehicles, the carrier vehicles loaded with the fan blades are connected in series, and the carrier vehicles can move along the tracks between the loading, pyrolysis and cooling sections. The application adopts a three-section independent structure to realize the loading pyrolysis, fiber decarburization and product cooling process of the waste fan blades; the pyrolysis section can intermittently convey the carrier vehicles, the reaction time can be controlled, the pyrolysis of the fan blades can be ensured to be complete, and the blades with insufficient pyrolysis can be re-pyrolyzed through the carrier vehicles.

To provide an ammonia decomposition reactor, a hydrogen production apparatus, and a hydrogen production method using the same, which have improved reaction reliability and energy efficiency. [Solution] The ammonia decomposition reactor comprises a first chamber and a second chamber, the operating temperature of the first chamber being 410°C or lower, the first chamber comprising at least one selected from the group consisting of carbon steel, low alloy steel, stainless steel, and nickel alloys, and the second chamber comprising a nickel alloy (N) satisfying the following formula 1. T ) can include [Formula 1] T≦15μm In the above formula 1, T is the nickel alloy (N T A cylindrical specimen with a cross-sectional diameter of 2 mm and a height of 200 mm was prepared, and when the cylindrical specimen was exposed to a gas stream containing 97.2 vol% NH3, 2.1 vol% H2, and 0.7 vol% N2, and a temperature environment of 500°C for 100 hours, it showed the maximum nitrided depth.

The present invention relates to a method for molten metal pyrolysis of a feed comprising hydrocarbons and nitrogen and / or hydrogen sulphide to produce solid carbon and one or more of liquid sulfur, hydrogen gas and ammonia gas. The molten salt layer contains two reaction zones of different temperatures, a high temperature zone for pyrolysing the hydrocarbon and a low temperature zone for pyrolysing the hydrogen sulphide and / or forming the ammonia. Liquid salt is used to separate produced solid carbon and optionally the produced liquid sulphur from the molten metal and to facilitate isolation of produced carbon. The invention further relates to a reactor for performing the method according to the invention.

A bladed apparatus (100) for treating feedstock in a process fluid is provided, the apparatus including means for adjusting the position of the working blades of a rotor (3) relative to stator components (2, 4) in the longitudinal direction of a rotor shaft (1). Adjustment is performed by axial displacement of the rotor (3) or alternatively by axial displacement of the reactor shells (22A, 32A). A method for improving treatment efficiency and adjusting flow losses during the treatment of feedstock in a process fluid, particularly under off-design conditions in the bladed apparatus (100), is also provided. In embodiments, the treatment of the feedstock includes thermal cracking or thermochemical cracking of hydrocarbon-containing feedstocks.

Systems and methods for a semi-continuous, hydrocarbon pyrolysis process to simultaneously produce CO2-free H2 and high value carbon, wherein the value of the produced carbon offsets the cost of H2 production, are described. The methods comprise a process, wherein steps of: hydrocarbon pyrolysis over a metal-based catalyst to produce H2 and high value carbon; in-situ dislodging of the high value carbon from the catalyst with a vigorous gas stream fluidization; and the catalyst reductive regeneration are semi-continuously cycled such as to continuously recycle the catalyst.

The invention relates to a reactor (1) at least for pyrolyzing a hydrocarbon-containing fluid at least for producing an at least hydrogen-containing fluid, comprising a reactor housing (2) and a reactor space (3) arranged inside the reactor housing (2), the reactor (1) having a reactor top (4) and a reactor bottom (5), the reactor top (4) and the reactor bottom (5) each have a supply opening (6) and an outlet opening (7), which can be closed at least intermittently and through which at least fluids or solids, in particular particles, can be introduced or discharged, in order to produce the moving bed (8), particles are introduced into the reactor space (3) at least intermittently and continuously through the reactor top (4). In a reactor capable of preventing an electrical heat input from being unstable in a methane pyrolysis process for producing hydrogen and pyrolytic carbon, provision is made for a plurality of conical components (9) to be arranged in the reactor space (3), each conical component (9) being hollow and having an input opening (10) and an output opening (11), and the diameter of the input opening (10) being larger than the diameter of the output opening (11).

The invention discloses a process method for preparing green hydrogen by coupling biomass flameless pyrolysis gasification with steam reforming, and relates to the technical field of hydrogen energy preparation and organic solid waste recycling, and the process method comprises the following steps: in a high-frequency electromagnetic heating austenite alloy rotary kiln, carbon-containing organic matters are subjected to primary cracking by using a light quantum energy field excited by an alloy; combustible gas and solid carbon residues are mixed; the primary product is introduced into a light quantum reforming reactor, high-temperature superheated steam is introduced into the light quantum reforming reactor, in the reforming reactor, the high-temperature steam is dissociated into active [H] atoms and [OH] free radicals under the action of a light quantum field, the active [H] atoms and the [OH] free radicals are subjected to an efficient roaming chemical reaction with primary combustible gas and solid carbon, and hydrocarbon and carbon are preferentially converted into H2 and CO; finally, the reaction product is subjected to pressure swing adsorption or molecular sieve separation to obtain high-purity hydrogen, energy field precise excitation and chemical reaction cooperation are achieved, and the yield and selectivity of hydrogen are greatly improved.

The invention belongs to the technical field of ethylene cracking furnace SCR flue gas denitration, and particularly relates to an ethylene cracking furnace SCR flue gas denitration urea pyrolysis system and an ethylene cracking furnace. The system comprises an air feeder, an air supply pipeline, a flue gas heat exchanger, a high-temperature hot air pipeline, an expansion joint and a urea pyrolyzing furnace which are sequentially communicated in the flowing direction of pyrolysis gas, and the flue gas heat exchanger is arranged in a radiation section of the ethylene pyrolyzing furnace. By utilizing the temperature of the area, hot air at 350-650 DEG C can be provided for the urea pyrolyzing furnace. The whole system is simple, saves energy and reduces cost.

An installation for the conversion of uranium hexafluoride (UF6) to uranium dioxide (UO2) comprises a hydrolysis reactor (4) for the conversion of UF6 into uranium oxyfluoride powder (UO2F2), a pyrohydrolysis furnace (6) for converting the UO2F2 powder supplied by the reactor (4) into UO2 powder, a supply device (8) comprising reagent injection ducts (10) for the injection of UF6, water vapor or H2, and a control system (16) designed to control the supply device (8) so as to supply at least one of the reagent injection ducts (10) with a neutral gas during a shut-down or start-up phase of the conversion installation.

Systems and methods for producing green hydrogen from a source material (e.g., biowaste) are contemplated. The source material is at least partially dehydrated to produce a dried intermediate and recovered water. The dried intermediate is pyrolyzed to produce syngas and a char. The recovered water is electrolyzed to produce oxygen and green hydrogen.

To provide enhanced systems and methods of chemical synthesis that reduce or eliminate the amount of fuel, particularly fossil fuel, that is burned to provide energy.SOLUTION: A chemical synthesis plant comprising a reactor configured for producing a process stream comprising a chemical product from a reactant; a feed preparation system configured to prepare a feed stream of the reactant for introduction into the reactor; and / or a product purification system configured to separate the chemical product from a reaction byproduct, unreacted reactant, or a combination thereof within the process stream, wherein the chemical synthesis plant is configured such that a majority of the net energy required for heating, cooling, compression, or a combination thereof utilized via the reactor, the feed preparation system, the product refining system, or a combination thereof is supplied from the intermittent energy source (IES).SELECTED DRAWING: Figure 3