993results about "Indirect heating destructive distillation" patented technology

A stirring device is provided. The stirring device includes a stirring device body (10), a rotating shaft (11) arranged at the center of the stirring device body, a plurality of connecting rods (12) fixedly connected to the rotating shaft, and a regulating assembly (141,143,144,145,146,147). A tail end of each connecting rod is hinged with a scraper (13). The rotating shaft is rotatable around an axis of the rotating shaft under the driving of a driving component. The connecting rods are uniformly distributed along the length of the rotating shaft. The rotating direction of the scraper is located in a plane vertical to the axis of the rotating shaft. The regulating assembly is used for regulating a rotation angle of the scraper. Wherein, the scraper can be in flexible contact with an inner wall of the stirring device body under the regulation of the regulating assembly.

A method for pyrolysis of a mass of waste material, includes: providing a screw arrangement adapted to supply heat to the mass by mechanical shear; providing a reactor after the screw arrangement, adapted to supply heat to the mass in the absence of oxygen by heating the reactor wall; heating the mass to an exit temperature and increasing the pressure to an exit pressure in the screw arrangement; thermally degrading the mass in the reactor. The mass is brought into an extreme condition at the exit temperature and exit pressure by the screw arrangement, such that during the pressure drop pyrolysis occurs, thereby forming gaseous hydrocarbons within the connecting element.

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 provides a rapid waste plastic pyrolysis-catalysis device and a test method, and belongs to the field of waste plastic utilization. The problems that a traditional waste plastic pyrolysis-catalytic reaction device is uneven in heating and low in pyrolysis rate in the pyrolysis process are solved. A rapid pyrolysis-catalytic reaction device for waste plastics comprises a pyrolysis device, a catalytic reaction device and a catalytic reaction device, the pyrolysis device comprises a pyrolysis container, a heat-carrying medium and a heating device, the heat-carrying medium is filled in the pyrolysis container and is in a liquid state at a high temperature, and the heating device is arranged on the wall of the pyrolysis container; the catalytic cracking device comprises a reducer pipe, an electromagnetic induction heating device and a catalytic reaction core, the catalytic reaction core is arranged on the upper half section of the reducer pipe, and a coil of the electromagnetic induction heating device is arranged outside the catalytic reaction core. The device is mainly used for pyrolyzing plastics.

Disclosed herein are reactors for pyrolysis of plastic feedstock comprising post-consumer and / or post-industrial plastics. In various implementations, the reactors include a reactor vessel, and one or more heaters configured for heating the feedstock in the reactor vessel's internal volume.

Disclosed herein are reactors for pyrolysis of plastic feedstock comprising post-consumer and / or post-industrial plastics. In various implementations, the reactors include a reactor vessel, and one or more heaters configured for heating the feedstock in the reactor vessel's internal volume.

Disclosed herein are reactors for pyrolysis of plastic feedstock comprising post-consumer and / or post-industrial plastics. In various implementations, the reactors include a reactor vessel for receiving and pyrolyzing the plastic feedstock, and one or more heaters for heating the feedstock in the reactor vessel's internal volume.

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.

It has been discovered that use of a single reactor for melting waste plastics and pyrolyzing the melted waste plastics can lower the carbon footprint of a chemical recycling facility. More particularly, by melting and pyrolyzing in the same reactor vessel, one may mitigate the need for additional heat sources, thereby decreasing the potential need to combust additional fossil fuels for heating purposes. Consequently, by utilizing the plastic liquification and pyrolysis reactor described herein, one can lower the carbon footprint of the chemical recycling facility described herein.

The utility model relates to a low-temperature carbonization furnace, which belongs to the technical field of low-temperature carbonization and comprises a carbonization furnace body, a material passing pipe is fixed on the inner side of the left side wall of the carbonization furnace body, the outer side of the material passing pipe is communicated with a feeding pipe, the right side of the material passing pipe is rotatably connected with a hearth through a bearing, and a treatment box is arranged on the right side of the carbonization furnace body. A purification mechanism for purifying exhausted waste gas is arranged on the treatment box, and a conveying mechanism for conveying materials is arranged on the material passing pipe. According to the low-temperature carbonization furnace, through cooperation of a communicating pipe, waste gas generated after low-temperature carbonization can be introduced into a treatment box so as to be treated, through cooperation of a water pump, water at the bottom of the treatment box can be pumped into a water inlet pipe and is introduced into a spraying pipe through a water outlet pipe, and through cooperation of a nozzle, the waste gas can be treated conveniently. And water can be sprayed out in a water mist form, so that the waste gas is cooled, particulate matters in the waste gas are settled, and the environment is prevented from being damaged by the high-temperature waste gas.

The invention belongs to the technical field of biomass gasification furnaces, and discloses a low-tar biomass gasification furnace and a use method thereof, the low-tar biomass gasification furnace comprises a gasification furnace body; the feeding mechanism is arranged at the top of the right side of the gasifier body; the material guide pipe is arranged on the right side in the gasification furnace body. According to the technical scheme, the movable plate, the spraying pipe head and the valve clack are arranged, after biomass in the material storage net cylinder is combusted and gasified, the biomass can upwards pass through the filtering medium, the filtering medium can adsorb tar in gas, then air pressure can push the movable plate to ascend, and the biomass can be sprayed out through the spraying pipe head. Then, a movable plate pushes gas in a first pneumatic piston cylinder to be guided into the top of a piston plate through a vent groove, the piston plate is pushed downwards, so that liquid in a liquid storage box is sprayed downwards through a spraying pipe head, and at the moment, the movable plate moves upwards to enable the spraying pipe head to push a valve clack to be opened; finally, the spraying pipe head sprays a catalyst to the tar in the filtering medium, so that the tar is pyrolyzed, gasified and discharged, and the tar content is greatly reduced.

Process for feeding plastic material, e.g. a plastic waste, to a processor such as a thermochemical reactor, e.g. a pyrolysis reactor. The process comprises an optional shredder or disintegrator (1), a conveying system (2), a feed hopper (3) with a lock hopper or rotary valve, a melting tank (6) with an agitator (5) followed by a melt pump (7) for the delivery of molten plastic to the processor. The advantage of the current process includes the ability to supply a consistent, metered flow to the processor, independent of the recycled plastic's melt properties, or the form or particle size and distribution of the plastic material.

The invention discloses a device and method for preparing biochar from corncobs, and belongs to the technical field of biochar preparation, the device comprises a machine base, a frame is fixed outside the machine base, an outer cylinder is horizontally fixed on one side of the machine base, and the outer cylinder is fixedly connected with the frame; the crushing seat is arranged above the outer cylinder; the combustion system is arranged on one side of the outer barrel, and the combustion system is externally connected with a hot gas booster fan; the sealing end cover is fixed in the outer cylinder body; the carbonization cylinder is rotationally mounted on the machine base, and one end of the carbonization cylinder is coaxially and rotationally connected with the sealing end cover; the heat control unit is arranged in the annular cavity of the carbonization cylinder; the material guide channel is arranged on the sealing end cover; the filter material unit is fixed in the carbonization cylinder; according to the device, a scrap mixture can be graded according to the particle size, primary carbonization of the scrap mixture is achieved, then the scrap mixture is remixed and then subjected to high-temperature pyrolysis carbonization, and the purity and quality of biochar preparation are improved.

Disclosed is a pyrolysis reaction method including a raw material input step of inputting a raw material and acquiring first data, a pyrolysis reaction step of pyrolyzing the input raw material, a reactant discharge step of discharging a pyrolyzed reactant and acquiring second data, an image sample collection step of additionally obtaining image samples, a DB storage step of normalizing the obtained image samples into time series data and storing RGB code values in a DB, a labeling step of assigning labels to the first data and the second data, a data processing step of comparing the first data and the second data with the data stored in the DB to generate third data and fourth data, and a control value deriving step of deriving control values of a pyrolysis temperature and a pyrolysis time based on the third data and the fourth data.

The invention discloses a rotary kiln for recycling pyrolysis energy of oil-based rock debris. A jacket heating chamber is mounted on the rotary kiln, a knocking mechanism is arranged between the outer wall of the rotary kiln and the inner wall of the jacket heating chamber, a feeding hopper is arranged at a feeding port of the rotary kiln, a dust remover is arranged at the air outlet end of a discharging port of the rotary kiln and communicated with a heat exchanger, and the heat exchanger is communicated with the rotary kiln. Mixed gas composed of water vapor and low-boiling-point organic gas separated by the heat exchanger is conveyed to the jacket heating chamber through a pipeline, mineral oil condensed by the heat exchanger is conveyed to the oil storage tank, and the jacket heating chamber burns the organic gas in the mixed gas and heats the water vapor in the mixed gas to heat the rotary kiln. A gas outlet pipeline of the jacket heating chamber conveys part of high-temperature gas obtained after combustion of the mixed gas to the knocking mechanism to serve as a power source for knocking the rotary kiln. Heat generated by recycling pyrolysis is used for driving the knocking mechanism to achieve descaling of the inner wall of the rotary kiln, the situation that a large number of reaction materials adhere to the inner wall of the rotary kiln is avoided, and normal use of the rotary kiln is guaranteed.

An improved reactor vessel for processing (recycling and upcycling) of plastics includes a shear plate assembly disposed on a rotatable shaft concentrically disposed within a cylindrical reactor vessel. The shear plates are spaced from the vessel wall to generate a predetermined strain rate between the shear plate and the inner wall via Couette flow, enhancing efficiency of the reaction.

The present invention relates to an improved process for removing silicon from a depolymerized oil, and more particularly to a process for producing a pyrolytic oil, the process comprising the steps of adding alumina in particulate form to waste plastic containing silicone to form a mixture, feeding the mixture to a pyrolysis reactor, in one embodiment, a method for producing an oil product includes heating a mixture in a reactor, pyrolyzing the mixture in the reactor, recovering at least a pyrolysis gas and a solid residue from the reactor, and condensing the pyrolysis gas to provide an oil product wherein the solid residue comprises alumina that reacts with silicon.

Disclosed herein are systems for pyrolyzing plastic feedstock comprising post-consumer and / or post-industrial plastics. In various implementations, the systems include one or more energy transfer apparatuses configured for receiving the plastic feedstock and applying energy to the plastic feedstock.

A system for converting waste plastic material to petrochemicals. The system including a feed inlet and distributor zone, a raked film reaction section located below the feed inlet and distributor zone, and a stirred tank reaction section located below the raked film reaction section.

A thermal treatment reactor for feedstocks and method of use. The thermal treatment reactor comprises an infeed assembly, a furnace, a rotary drum, a discharge assembly, and a liberator assembly. The rotary drum may comprise forwarding flights, mixing flights, oscillating flights, and raking pins. The feedstock to be thermally treated enters the reactor through the infeed assembly. The feedstock is fed into the reactor in a controlled manner by means of a screw conveyor system. The thermally-treated product exits the reactor via the discharge assembly, which separates the thermally treated product into a VOC liberator, from whence the product enters into a cooling system to reduce the temperature for safe storage and handling.

A biochar production system includes a reactor body, a central rod disposed within the reactor body, a leveling arm extending from the central rod and configured to rotate about the central rod, and a bed level sensor system. The bed level sensor system includes a float configured to move from a resting position on a biomass in the reactor to an ending position upon contact with the leveling arm, and a level sensor coupled to the float via a connector. The level sensor is configured to correspondingly move with the float. A controller is configured to detect bed levels of the biomass within the reactor body, and determine a plurality of sample readings based on the detected bed levels.

The utility model discloses a biomass poly-generation wood vinegar preparation device which comprises a heating box, a liquid storage box and a control panel, a conveying cylinder is installed in the heating box, the two ends of the conveying cylinder both penetrate through and extend to the outside of the heating box, a feeding assembly is arranged in the conveying cylinder, and the liquid storage box is connected with the liquid storage box. An air guide pipe communicating with an inner cavity of the conveying cylinder is fixed to the upper portion of the side face of the conveying cylinder, and the end, away from the conveying cylinder, of the air guide pipe penetrates and extends out of the heating box. According to the biomass poly-generation wood vinegar preparation device, biomass is carbonized in an anoxic environment to generate flue gas, the high-temperature condition in the carbonization environment can be guaranteed in the process, the carbonization requirement of the biomass is met, flue gas condensation can be assisted after the flue gas is generated, preparation of the wood vinegar is facilitated, and the biomass poly-generation wood vinegar preparation device is suitable for industrial production. Waste gas left after the wood vinegar is separated from the flue gas can be discharged from the preparation device so as to be further treated, and the generated wood vinegar is stored in a low-temperature environment, so that the influence of high temperature in the flue gas on the wood vinegar is prevented.

A method for valorizing refuse material comprises a selective pyrolysis, based on: a first step of pyrolysis of the biogenic fraction, with at least one subsequent condensation step, and a second step of pyrolysis of the synthetic fraction with at least one subsequent condensation step; wherein the first and second pyrolysis steps are configured in series; wherein the first pyrolysis step is configured to extract at least a fraction of biogenic combustible gas which continues to the first condensation step, and a fraction of solid material that is transported to the second step of pyrolysis of the synthetic fraction, which is carried out at a higher temperature than the first pyrolysis step, and which is configured to obtain a fraction of synthetic combustible gas which continues to the second condensation step, and a fraction of solid material.

The invention discloses a rotary kiln pyrolysis process preheating and replacing method which comprises the following steps: replacing and preheating an upgrading system when a rotary kiln is started, performing low-load operation on the rotary kiln, heating the rotary kiln by a rotary kiln hot blast stove and a flue gas fan, closing a pipeline valve from a dry gas fan to a first dust remover, and performing low-load operation on the rotary kiln; a rotary kiln nitrogen replacement valve is slightly opened, nitrogen enters the rotary kiln through a dry gas guide screw for replacement and heat removal, an oil and gas pipeline is preheated, direct cooling tower spraying cooling water and indirect cooling tower circulating cooling water are put into use, a coal gas fan is started for system circulation, and an electrical tar precipitator outlet is opened to a rotary kiln starting line valve; the invention further discloses a rotary kiln quality improvement system, the rotary kiln pyrolysis process preheating and replacement method is adopted, the start-up time is effectively shortened, the investment and operation cost is saved, and meanwhile a foundation is laid for long-period stable operation of the system.

1. A method and reactor assembly for producing hydrocarbon oils by pyrolysis from a first plastic feedstock, comprising: optionally combining the plastic feedstock with a second feedstock selected from the group consisting of a hydrocarbon-containing feedstock selected from crumb rubber and wood chunks, the second feedstock constituting more than 15% by weight of the combined feedstocks; adding a catalyst to the combined feedstocks to form a reaction composition; feeding the reaction composition through an airlock valve (7) to an auger pyrolysis reactor comprising at least two auger reactors (1a, 1b) heated to a temperature in the range of 450-550°C; distributing oil vapors and non-condensable vapors from the auger reactors (1a, 1b) to a condenser; and condensing heavy and light oil fractions from the vapors in two stages.

The invention is in the field of catalytic processes. In particular the present invention is directed to a thermo-catalytic pyrolysis process for the preparation of low molecular weight monocyclic aromatic compounds. In accordance with the present invention there is provided a thermo-catalytic pyrolysis process for the preparation of low molecular weight monocyclic aromatic compounds from a feed stream comprising biomass and / or one or more polymers, comprising the steps of: a) subjecting the feed stream comprising biomass and / or one or more polymers to a pyrolysis treatment at a pyrolysis temperature to produce pyrolysis vapors; b) optionally cooling or heating the pyrolysis vapors; c) contacting the pyrolysis vapors with an aromatization catalyst at an aromatization temperature in a catalytic conversion step to yield a conversion product comprising low molecular weight aromatic compounds; and d) optionally recovering the low molecular weight monocyclic aromatic compounds from the conversion product; wherein catalytic conversion step c) is performed in a smooth or bubbling fluidized bed reactor.

This invention provides processes and systems for converting biomass into high-carbon biogenic reagents that are suitable for a variety of commercial applications. Some embodiments employ pyrolysis in the presence of an inert gas to generate hot pyrolyzed solids, condensable vapors, and non-condensable gases, followed by separation of vapors and gases, and cooling of the hot pyrolyzed solids in the presence of the inert gas. Additives may be introduced during processing or combined with the reagent, or both. The biogenic reagent may include at least 70 wt %, 80 wt %, 90 wt %, 95 wt %, or more total carbon on a dry basis. The biogenic reagent may have an energy content of at least 12,000 Btu / lb, 13,000 Btu / lb, 14,000 Btu / lb, or 14,500 Btu / lb on a dry basis. The biogenic reagent may be formed into fine powders, or structural objects. The structural objects may have a structure and / or strength that derive from the feedstock, heat rate, and additives.

The invention relates to equipment and a method for preparing carbon from waste heat of steel slag, a carbonized material and a carbonized product. The steel slag waste heat carbonization equipment comprises at least one carbonization device, and the carbonization device comprises a heat storage chamber and a carbonization chamber; the heat storage chamber is used for containing steel slag, and the carbonization chamber surrounds the outer side of the side wall of the heat storage chamber. The carbonization chamber in the carbonization device is arranged on the outer side of the side wall of the heat storage chamber in a surrounding manner; when a biomass material to be carbonized is placed in the carbonization chamber and high-temperature steel slag is placed in the heat storage chamber, heat of the steel slag in the heat storage chamber is conducted to the periphery, so that the biomass material in the carbonization chamber is heated and carbonized; the biomass in the carbonization chamber is heated more uniformly, and the carbonization effect is more uniform; the heat conduction of heat of the heat storage chamber to surrounding air is reduced to a certain extent, a certain heat preservation effect is achieved on the heat storage chamber, more heat is used for carbonizing biomass, the utilization rate of the waste heat of the steel slag is further improved, and the carbon making efficiency is improved.

A pyrolysis rotary kiln for low-rank coal, the kiln belonging to the field of pyrolysis rotary kilns. The pyrolysis rotary kiln comprises a cylinder device (1), wherein a feeding device (18) and a transmission device (19) are provided at one end of the cylinder device (1), and a discharge device (21) is mounted at the other end of the cylinder device (1); an exhaust device (20) is mounted on the cylinder device (1) close to the feeding device (18), and a combustion chamber (3) is provided on the cylinder device (1) close to the discharge device (21); and the cylinder device (1) consists of a hot-air tube bundle (2), a feeding-end support (4), a discharge-end support (5), a thermally insulating material (6), an inner cylinder (7), an outer cylinder (8) and a slag discharge opening (25), the thermally insulating material (6) being located between the inner cylinder (7) and the outer cylinder (8). The present invention solves the problem of the tight and difficult position arrangement of a central exhaust tube and a coal feeding position in a small pyrolysis kiln, and also solves the problem of, when the pyrolysis kiln is in a hot state, the path of a pyrolysis tube (12) from a discharge end of the inner cylinder (7) to a feeding end thereof and then to the outer cylinder (8), and the corresponding displacements of different parts of a kiln cylinder caused by different temperature rises having different impacts on the structure and sealing performance of the cylinder, etc. The present invention has a rational structure, is easily manufactured, and achieves high-efficiency pyrolysis of low-rank coal.

This invention provides processes and systems for converting biomass into high-carbon biogenic reagents that are suitable for a variety of commercial applications. Some embodiments employ pyrolysis in the presence of an inert gas to generate hot pyrolyzed solids, condensable vapors, and non-condensable gases, followed by separation of vapors and gases, and cooling of the hot pyrolyzed solids in the presence of the inert gas. Additives may be introduced during processing or combined with the reagent, or both. The biogenic reagent may include at least 70 wt %, 80 wt %, 90 wt %, 95 wt %, or more total carbon on a dry basis. The biogenic reagent may have an energy content of at least 12,000 Btu / lb, 13,000 Btu / lb, 14,000 Btu / lb, or 14,500 Btu / lb on a dry basis. The biogenic reagent may be formed into fine powders, or structural objects. The structural objects may have a structure and / or strength that derive from the feedstock, heat rate, and additives.