1951results about "Special form destructive distillation" patented technology

The invention discloses a large-scale pig breeding wastewater purification treatment system, and relates to the technical field of wastewater treatment.The large-scale pig breeding wastewater purification treatment system is characterized in that the ion concentration of anaerobic liquid is monitored through a multi-ion sensing array, and a multi-channel feeding system is controlled to synthesize customized struvite compound fertilizer; the AI prediction control unit predicts the optimal medicament dosage and realizes millisecond-level closed-loop regulation; the multi-dimensional synergistic biochemical treatment module comprises an A / O biochemical treatment unit and an electric field enhanced anaerobic ammonia oxidation reactor, the electric field enhanced anaerobic ammonia oxidation reactor applies a direct-current electric field through an electrode pair, and engineering conductive biochar is used as a carrier to accelerate microbial metabolism; the sludge low-temperature pyrolysis self-consistent circulation module is used for pyrolyzing and converting residual sludge into biochar, biofuel and wood vinegar, and the biochar activation treatment unit is used for preparing engineering conductive biochar and forming a substance closed loop through a self-consistent circulation conveying system; and the digital twinning intelligent management and control platform realizes intelligent management and control of the system.

Chemical recycling facilities for processing mixed plastic waste are provided herein. Such facilities have the capability of processing mixed plastic waste streams and utilize a variety of recycling facilities, such as, for example, solvolysis facility, a pyrolysis facility, a cracker facility, a partial oxidation gasification facility, an energy generation / energy production facility, and a solidification facility. Streams from one or more of these individual facilities may be used as feed to one or more of the other facilities, thereby maximizing recovery of valuable chemical components and minimizing unusable waste streams.

The invention relates to a heavy metal stabilizer and a preparation method and application thereof, and relates to the technical field of heavy metal stabilizers. The preparation method comprises the following steps: weighing sepiolite, adding hydrochloric acid, carrying out constant-temperature water bath, carrying out centrifugal separation to obtain a precipitate, drying the precipitate, and grinding to obtain the heavy metal stabilizer for sludge pyrolysis. Natural sepiolite is used as a base material, acid activation treatment is carried out through hydrochloric acid to obtain the heavy metal stabilizer, the heavy metal stabilizer is used in sludge pyrolysis, in the pyrolysis process, the heavy metal stabilizer fixes heavy metal in a pyrolysis product carbon in a stable form through the effects of surface adsorption, ion complexation, high-temperature packaging and the like, and the heavy metal stabilizer is used for sludge pyrolysis. Therefore, the emission of heavy metals in the pyrolysis process is reduced, and the ecological risk and the use risk of the pyrolysis product carbon are reduced.

The invention provides a garbage pyrolysis gasification multi-stage directional regulation-gas-solid phase reforming synergistic hydrogen production treatment process which comprises the following steps: first-stage regulation: pretreatment and graded feeding: crushing, sorting, drying and catalytic coating treatment are performed on garbage through a physical-chemical directional means; second-stage regulation and control: performing low-temperature pyrolysis directional dechlorination, and performing thermochemical directional conversion on plastic and biomass garbage at 350-450 DEG C; third-stage regulation and control: gasifying and melting are coordinated and oriented, and a gas-solid phase coupling reaction is realized in double fluidized beds at 800-900 DEG C; four-stage regulation and control: multi-stage gas-solid phase reforming is carried out, and the hydrogen yield is increased through catalysis-adsorption synergistic effect in a 700 DEG C moving bed; and five-stage regulation and control: deep purification and hydrogen purification, wherein the synthesis gas is selectively oxidized by utilizing chemical looping combustion to release hydrogen with the purity being greater than or equal to 99.99%. According to the invention, the molten ash is used as a catalytic carrier, and the Fe-Ce active sites of the molten ash are utilized to synchronously realize tar cracking and synthesis gas reforming, so that the conversion rate of tar is effectively improved.

The invention discloses a device for preparing a molten carbon fertilizer through solid waste microwave pyrolysis and waste heat recovery, and belongs to the field of solid waste treatment and recycling. The device is composed of a pretreatment unit, a microwave pyrolysis unit, a gas-solid separation unit, a gas phase treatment unit, a solid phase treatment unit and a waste heat circulation unit, solid waste enters a microwave rotary kiln after being dried and crushed, a magnetron generates microwave anaerobic pyrolysis under photovoltaic power supply, and a high-temperature gas-solid product is generated; the cyclone separator is used for separating flue gas from solid carbon, the flue gas is condensed to obtain pyrolytic oil and gas, and waste heat of medium-temperature flue gas is recovered through the heat accumulating type heat exchanger for drying; cooling the solid carbon through a heat pipe heat exchanger, recovering waste heat and liquefying urea, and mixing the solid carbon and the urea in a stirring melting pool to prepare a molten carbon fertilizer; and the waste heat backflow fan sends the carbon waste heat back to the drying chamber. The system is driven by green electricity, gas and solid phase waste heat is recovered through double paths, solid waste efficient pyrolysis-product high value-energy self-circulation is achieved, and energy consumption and carbon emission are reduced.

Methods and systems are provided for the conversion of waste plastics into various useful downstream recycle-content products. More particularly, the present system and method involves pyrolyzing one or more waste plastics into various pyrolysis products, including a carbon solids-containing pyrolysis residue, and then subjecting the pyrolysis residue to partial oxidation gasification to thereby form a syngas composition.

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.

The invention relates to the field of waste tire thermal cracking, and discloses a waste tire thermal cracking treatment device which comprises a heating cavity, mounting holes are formed in the two sides of the heating cavity, the interiors of the two mounting holes are jointly and rotationally connected with a thermal cracking cavity, and the interior of the thermal cracking cavity is fixedly connected with an annular filter screen plate. A circular hole is formed in one end of the thermal cracking cavity, a connecting pipe is fixedly connected to the interior of the circular hole, and a flapping mechanism is arranged at one end of the connecting pipe. According to the waste tire thermal cracking treatment device, the driving mechanism drives the thermal cracking cavity and the connecting pipe to rotate synchronously, and the stirring rods on the inner wall of the thermal cracking cavity can turn over tire materials, so that uniform heating is ensured; the connecting pipe drives the beating plate to continuously beat the annular filter screen plate, carbon black attached to the steel wires after pyrolysis is shaken off, the carbon black falls into the cavity bottom through the filter screen holes, the steel wires are intercepted by the filter screen, and separation of the carbon black and the steel wires is achieved.

A method of processing waste consumable aerosol-generating articles by pyrolysis, the method comprising the steps of: feeding waste consumable aerosol-generating articles into a pyrolysis reactor, the aerosol-generating articles comprising at least some aerosol-generating articles comprising an aerosol-generating substrate with a metallic susceptor; heating the aerosol-generating articles in the pyrolysis reactor to a temperature sufficient to cause pyrolysis of non-metallic components of the aerosol-generating articles into gaseous products and char, wherein the temperature is less than a melting temperature of the metallic susceptors; extracting the gaseous products from the pyrolysis reactor and feeding the gaseous products to a condensing separator; and feeding the char from the pyrolysis reactor to a magnetic separator and separating the metallic susceptors from the char by applying a magnetic field; wherein at least some of the heat in the pyrolysis reactor is generated by applying an alternating electromagnetic field to the aerosol-generating articles so as to induce eddy currents in the metallic susceptors.

The invention provides a method for preparing alkane olefin by catalyzing microalgae pyrolysis through an alkali modified molecular sieve, and belongs to the field of biomass energy utilization. According to the method, the ZSM-5 molecular sieve raw powder is modified by adopting the alkaline solution, so that the pore structure of the ZSM-5 molecular sieve can be improved, the distribution of acidic sites can be optimized, the regulation and control of a microalgae pyrolytic reaction path can be realized under relatively mild conditions, the deoxidation reaction can be promoted, the content of oxygen-containing products can be reduced, and the generation of alkane olefin substances can be promoted; the aromatization reaction strength is reduced, and the selectivity of light hydrocarbons is improved, so that the content of alkanes and olefins in the pyrolysis bio-oil reaches 70% or above, and the quality of the pyrolysis bio-oil is remarkably improved. Results of the embodiment show that the pyrolysis bio-oil provided by the invention is subjected to gas chromatography-mass spectrometry detection, and the alkane-olefin peak area content is greater than 70%.

The invention provides a waste rubber and plastic pyrolysis system and application thereof.The waste rubber and plastic pyrolysis system comprises a feeding unit comprising a feeding bin, a material conveying mechanism and an anaerobic protection mechanism, a pyrolysis reaction unit comprising a first-stage pyrolysis reactor and a second-stage pyrolysis reactor, and each pyrolysis reactor at least comprises a heating cavity, a material conveying device and a heating source; the heating cavity provides a closed high-temperature environment under the action of the heating source, the material conveying mechanism pushes materials in the heating cavity in the preset direction, and an outlet of the first-stage pyrolysis reactor communicates with an inlet of the second-stage pyrolysis reactor, so that the materials sequentially pass through the first-stage pyrolysis reactor and the second-stage pyrolysis reactor to be subjected to multi-stage pyrolysis. The product recycling structure comprises a pyrolysis gas purifying and condensing device, the pyrolysis gas purifying and condensing device is connected with the second-stage pyrolysis reactor, and by applying the technical scheme, the technical problem that in the prior art, waste rubber and plastic pyrolysis and equipment carbon residue treatment are difficult can be effectively solved.

The invention relates to a double-circulation symmetrical airflow type straw flash carbonization device which comprises a feeding mechanism, a conveying mechanism, a rotary carbonization furnace, a carbonization separator, a carbon outlet separator, a pyrolysis gas channel, a combustion furnace and a combustion separator, the rotary carbonization furnace is of a double-layer jacket type structure, and the design of an outer-layer high-temperature heating inner wall and an inner-layer tangential rotational flow inner cavity is adopted; the raw materials form a thin layer under the action of centrifugal force to finish flash carbonization. According to the invention, the combustion furnace and the rotary carbonization furnace which are symmetrically arranged, and the carbonization separator and the combustion separator are adopted, so that cyclic re-carbonization and graded collection of carbonized products, split-flow utilization of pyrolysis gas and stepped recovery of high-temperature flue gas are realized; the problems that a traditional device is low in continuous degree, high in energy consumption and insufficient in product purity are solved, and the straw carbonization efficiency and the resource utilization rate are remarkably improved.

Processes for decontaminating a plastic derived oil include contacting a plastic derived oil stream containing halogen-containing compounds with a decontamination catalyst at a reaction temperature of 350-450° C. to produce a decontaminated plastic derived oil and a used decontamination catalyst. The decontamination catalyst includes from 5-40 wt. % red mud particles, from 20-60 wt. % matrix material, and from 10-30 wt. % binder, per unit weight of the decontamination catalyst. Contacting the plastic derived oil stream with the decontamination catalyst at the reaction conditions causes halogen-containing compounds to react to form hydrocarbons and hydrogen halides, which further react with the red mud particles to produce metal halides on surfaces of the red mud particles. The decontaminated plastic derived oil has a concentration of the halogen-containing compounds less than a concentration of the halogen-containing compounds in the plastic derived oil stream.

The utility model relates to a raw gas source upgrading system for an internal heating type vertical furnace. The raw gas source upgrading system comprises a dry distillation furnace, a carbon dioxide removal device and a pure oxygen preparation device, the device further comprises a first multi-stage mixer, a second multi-stage mixer, a gas sampling analysis tube and a gas component detector. Pure oxygen is adopted as a combustion improver, so that the content of nitrogen in the raw gas is greatly reduced, and the application scene of coal gasification production and deep processing of the internal heating type vertical furnace is expanded; the components of combustion-supporting gas, combustible gas and inert gas in mixed gas in a lattice wall of the dry distillation furnace are controlled by adopting double-circulation control of carbon dioxide and recirculated gas, the combustion intensity and the uniformity degree are strictly controlled under the condition that dry distillation heat supply is met, and scabbing and burning loss of a dry distillation furnace body are avoided.

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.

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.

This invention relates to a carbonized loofah photothermal evaporator with a wall-like structure and its preparation method, relating to the field of solar-driven interfacial water evaporation. The invention utilizes freeze-drying technology to dry fresh loofah, obtaining a freeze-dried loofah that retains its porous structure; then, it carbonizes the freeze-dried loofah in a tubular furnace under an inert gas environment. The carbonized loofah retains the anisotropic structure of the inner and outer layers of the fresh loofah. The outer layer, with its dense structure resembling a wall, maintains its shape and provides structural protection. The inner layer, with its loose and porous structure, acts as a channel for directional water transport, facilitating efficient water evaporation. The resulting integrated carbonized loofah photothermal evaporator exhibits excellent water transport rate and good photothermal conversion capability, making it applicable to interfacial water evaporation. This evaporator uses readily available raw materials, has a simple manufacturing process, high photothermal evaporation efficiency, and is environmentally friendly, showing promising applications in seawater desalination.

A pyrolysis method and system are provided that utilizes a multistage dehalogenation method to effectively remove halogen-containing compounds that are present in an initial recycled plastic feedstock. More particularly, the multistage dehalogenation system and process may involve physical sorting the plastic feedstock, melting and separating the feedstock, and subjecting the feedstock a two-stage pyrolysis with intermediate HCl removal.

A hybrid catalyst for simultaneous dehalogenation and cracking of plastic derived oil includes a plurality of composite particles, wherein each of the composite particles includes red mud particles and beta zeolite particles. A process for upgrading plastic derived oil includes contacting the plastic derived oil with the hybrid catalyst. A system for upgrading plastic derived oil includes an FCC reactor containing the hybrid catalyst.

The present invention is directed to a dry tomb biolandfill for biological carbon sequestration, and more particularly compositions of a biolandfill containing a salt biomass composite.

The invention provides a low-rank coal pyrolysis system and a control method thereof. The low-rank coal pyrolysis system comprises a through-flow type rotary dryer, a pyrolysis furnace, a dust remover, a waste heat recovery device, a venturi tower and a purification recovery device, and a dried coal outlet of the through-flow type rotary dryer is connected with a product inlet of the pyrolysis furnace; a raw gas outlet of the pyrolyzing furnace is connected with a gas inlet of the venturi tower through the dust remover and the waste heat recovery device in sequence, a flue gas outlet of the pyrolyzing furnace is communicated with a flue gas recovery port of the cross-flow rotary dryer to recover flue gas to dry raw material coal, and a tower bottom outlet of the venturi tower is connected with the ammonia water purification and recovery device to recover coal tar; and a coal gas outlet of the venturi tower is communicated with the coal gas purification and recovery device. According to the low-rank coal pyrolysis system provided by the invention, on one hand, waste heat of raw gas can be recycled, and on the other hand, raw materials can be conveniently dried, so that the pyrolysis efficiency is improved.

A method of converting a polymer including contacting a catalyst with a low-density polyethylene polymer to form a mixture and heating the mixture to a temperature of 200 degrees Celsius (° C.) to 600° C. in a microwave reactor to form a product. The catalyst includes an HZSM-5 zeolite, and 1 weight percent (wt. %) to 10 wt. % gallium and 0.1% to 5 wt. % copper, based on the total weight of the catalyst.

The invention relates to the technical field of carbonization furnace leakage monitoring, and discloses a biomass carbonization furnace leakage monitoring method and system, and the method comprises the steps: obtaining a hearth pressure change, flue gas component detection and furnace body surface temperature image sequence, building a comparison data set according to historical stable operation segments, and carrying out the comparison according to a time window; marking a first suspected section when the flue gas concentration rises in the continuous window and the pressure fluctuates aperiodically, determining a second suspected section if a continuous high-temperature strip appears near a furnace door, a pipeline interface or a sealing seam in the section, and judging a leakage section according to the consistency of the abnormal flue gas concentration and the high-temperature strip; and generating section-level and boundary-level positioning results according to the positions of the leaked sections, recording marks, triggering reproduction judgment when subsequent abnormalities occur, and archiving the results and updating a contrast data set after an operation cycle is ended. According to the invention, through data collaboration and determination, the leakage identification speed is improved.

The invention provides a sewage enhanced nitrogen and phosphorus removal process based on microbial community interaction, and belongs to the field of sewage treatment. The method comprises the steps of sewage pretreatment, anaerobic phosphorus release, anoxic denitrification, aerobic nitrification phosphorus uptake and the like, an anaerobic-anoxic-aerobic three-section reactor is adopted, and proper ecological nichs are provided for phosphorus-accumulating bacteria, denitrifying bacteria and nitrifying bacteria by accurately regulating and controlling parameters such as dissolved oxygen, hydraulic retention time and carbon nitrogen ratio of each section, so that the phosphorus-accumulating bacteria, the denitrifying bacteria and the nitrifying bacteria can be efficiently degraded, and the phosphorus-accumulating bacteria, the denitrifying bacteria and the nitrifying bacteria can be efficiently degraded. The competition problem of biological nitrogen removal and biological phosphorus removal is effectively relieved, the nitrogen and phosphorus removal efficiency is remarkably improved, the total nitrogen removal rate reaches 85% or above, and the total phosphorus removal rate exceeds 90%; straw-based modified charcoal is adopted as a carrier, so that the loading capacity and activity of functional flora are improved, and flora interaction is enhanced; meanwhile, resource utilization of agricultural wastes is realized, and the method has remarkable environmental benefits and economic advantages.

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.

Processes and facilities for producing a recycled content organic chemical compound directly or indirectly from waste plastic. Processing schemes are described herein for converting waste plastic (or hydrocarbon having recycled content derived from waste plastic) into useful intermediate chemicals and final products. The waste plastic can be liquified before being introduced to downstream processing. In some aspects, recycled content aromatics (r-aromatics) can be processed to provide recycled content paraxylene (r-paraxylene), which can then be used to provide recycled content terephthalic acid (r-TPA) and / or recycled content polyethylene terephthalate (r-PET).

According to the wet garbage treatment system provided by the utility model, a hydrothermal carbonization method and a microwave carbonization method are combined, so that the stable quality of a product is ensured, and meanwhile, generated harmful gases are reduced. A material outlet of the sorting device is connected with a material inlet of the material particle preparation device, a material outlet of the material particle preparation device is connected with a material inlet of the drying device, a material outlet of the drying device is connected with a material inlet of the hydrothermal carbonization device, and a material outlet of the hydrothermal carbonization device is connected with a material inlet of the microwave carbonization device. A material outlet of the microwave carbonization device is connected with a material inlet of the carbon block preparation device; a waste gas outlet of the drying device and a waste gas outlet of the microwave carbonization device are connected with the hydrothermal carbonization device; a waste gas outlet of the hydrothermal carbonization device is connected with the waste gas treatment device; a waste liquid outlet of the material particle preparation device is connected with the waste liquid treatment device.

The invention discloses an oil-containing solid waste and plastic co-pyrolysis method based on carbon residue in-situ catalysis, and belongs to the technical field of solid waste resource utilization. The method comprises the following steps: pre-treating and mixing oil-containing solid waste and waste plastic, and co-pyrolyzing to prepare primary carbon residue and pyrolysis steam; performing acid dipping or oxidation modification on the primary carbon residue to obtain modified carbon residue, performing in-situ catalytic reforming on the pyrolysis steam and the modified carbon residue under the condition that the temperature is not lower than the final pyrolysis temperature, performing fractional condensation separation on a product to obtain pyrolytic oil and hydrogen-rich gas, and performing high-valued preparation on a functional material from the secondary residue. According to the method, the problems that a catalyst needs to be additionally added and the product quality is low in the existing co-pyrolysis technology are solved. No additional catalyst is needed in the whole process, the process cost is reduced, and related secondary pollution of the catalyst is avoided; product quality improvement is effectively achieved, two kinds of solid waste are treated synchronously, and remarkable environmental protection and economic and social benefits are achieved.

A method for processing a plastic-derived oil may comprise contacting the plastic-derived oil with a catalyst to crack the plastic-derived oil to form a hydrocarbon product. The catalyst may comprise a metal oxide-loaded ZSM-5 zeolite comprising: ZSM-5 particles having a size of less than 100 nm, and one or more metal oxides chosen from iron oxide, lanthanum oxide, and cerium oxide. The one or more metal oxides may be disposed on the ZSM-5 particles.

The invention discloses a value-added utilization method and application of iron-containing fine impurities, and relates to the technical field of ferrous metallurgy. The method comprises the following steps: taking 10-30% by mass of iron-containing fine miscellaneous materials and 70-90% by mass of mixed coal powder as raw materials, additionally adding a composite additive which accounts for 13-27% of the total mass of the raw materials, and mixing, briquetting and carbonizing to obtain iron coke; wherein the composite additive is composed of asphalt and aluminum dihydrogen phosphate. The application is as follows: the iron coke obtained by adopting the method for value-added utilization of the iron-containing fine miscellaneous materials is used for blast furnace ironmaking, so that the coke ratio can be reduced, the smelting efficiency and the resource utilization rate can be improved, the production cost can be reduced, and the effects of energy conservation and emission reduction are achieved.