1572 results about "Air separation" patented technology

The invention relates to the technical field of data processing, in particular to a whole-process data monitoring and visual management method and system for an air separation process, and the method comprises the steps: collecting key parameter data in the air separation process, and input data vectors and output data vectors among equipment; constructing a parameter correlation model to analyze the input data vector and the output data vector to obtain data deviation; if the data deviation exceeds a dynamic threshold value, triggering a multi-level alarm mechanism, and generating a block chain log record; generating a hash value for the key parameter data, and marking an abnormal link; a bimodal anomaly detection model is constructed to analyze an abnormal link, an equipment performance attenuation coefficient and an inter-equipment anomaly influence relation coefficient are obtained, and a comprehensive anomaly score is generated through a fusion technology; when the comprehensive abnormal score is greater than a preset threshold value, constructing a fault tree model to reversely trace an abnormal data link for the abnormal link, and positioning a fault source; and full-process data monitoring and management are realized through a visual interface.

The invention relates to the technical field of air separation plant management, and discloses an air separation plant energy efficiency intelligent management system based on data analysis, which comprises a data acquisition module, an energy efficiency analysis module, an optimization strategy generation module, a real-time adjustment module and a dynamic feedback module. The data acquisition module acquires and stores data in real time in a multi-source heterogeneous manner. The energy efficiency analysis module uses a hybrid convolutional neural network and an adaptive wavelet packet decomposition algorithm to extract features. And the optimization strategy generation module formulates a strategy in combination with deep reinforcement learning and a multi-target particle swarm optimization algorithm. And the real-time adjustment module dynamically adjusts equipment parameters based on fuzzy logic control. And the dynamic feedback module forms closed-loop optimization. The system solves the problem of energy efficiency management of traditional air separation equipment, and can accurately collect and process data, deeply analyze energy efficiency, intelligently generate optimization strategies, accurately adjust parameters in real time and continuously optimize the parameters, improve the energy efficiency of the air separation equipment, reduce energy consumption, enhance the operation stability and reliability of the equipment and assist industrial sustainable development.

The invention relates to a magnetic suspension air separation expansion machine system and an operation method thereof. The system comprises a base, a magnetic suspension bearing assembly, a rotor assembly and a control module. The magnetic suspension bearing assembly is arranged on the base, comprises an expansion end radial magnetic suspension bearing, a brake end radial magnetic suspension bearing and an axial thrust magnetic suspension bearing, and is used for supporting radial and axial forces of the rotor assembly; the rotor assembly is arranged in the machine body and connected with the machine body through the magnetic suspension bearing assembly, and non-contact suspension is achieved. The control module is electrically connected with the magnetic suspension bearing assembly and used for controlling the magnetic suspension bearing assembly to suspend the rotor. The operation method comprises the steps of self-checking before starting, electrifying to suspend the rotor, starting the air compressor to pressurize, adjusting flow to drive the expansion impeller, carrying out split-flow cooling on gas, and collecting data in real time to maintain stable suspension of the rotor. The device has the advantages of high efficiency, stability, energy conservation and the like and is suitable for the field of air separation.

Embodiments described herein relate to removal of aluminum impurities from battery waste. In some aspects, a method for removing aluminum impurities includes preprocessing a quantity of battery waste to improve removal of aluminum impurities from the quantity of battery waste. The method further includes removing at least a portion of the aluminum impurities from the quantity of battery waste, modifying the removed aluminum impurities to form a coating precursor and / or a doping precursor, and applying the coating precursor and / or the doping precursor to an electrode material. In some embodiments, the method further includes characterizing the aluminum impurities in the quantity of battery waste and regenerating the electrode material. In some embodiments, the removing can be via sieving, cyclone separation, air separation, elutriation, and / or dissolution. In some embodiments, the doping precursor can include aluminum hydroxide (Al(OH)3). In some embodiments, the regenerating includes applying a heat treatment to the electrode material.

The utility model provides a compound device for providing feed gas for preparing green ammonia from new energy and a green ammonia synthesis system. The composite device comprises a deep cooling air separation nitrogen generation subsystem, a hydrogen supply subsystem and a main heat exchanger, and the hydrogen supply subsystem comprises a water electrolysis hydrogen generation unit, a first hydrogen compressor, a second hydrogen compressor, a hydrogen storage tank and a hydrogen conveying pipeline. The hydrogen conveying pipeline comprises a first hydrogen conveying pipeline, a second hydrogen conveying pipeline and a third hydrogen conveying pipeline; the main heat exchanger is a multi-channel heat exchanger and comprises a first flowing channel used for flowing of a first medium and a second flowing channel used for flowing of a second medium, the second hydrogen compressor is connected with the hydrogen storage tank through the first flowing channel, and the hydrogen storage tank is connected with the third hydrogen conveying pipeline through the second flowing channel. The composite device provided by the utility model can ensure the supply stability of the raw material hydrogen of the ammonia production subsystem, and solves the technical problem that the hydrogen supply is unstable in the existing green ammonia synthesis process.

The invention discloses a diaphragm sorting device for waste lithium battery recycling, and relates to the technical field of diaphragm sorting, the diaphragm sorting device for waste lithium battery recycling comprises a shell, a screening assembly, a winnowing assembly and an adsorption separation assembly.Large particles, medium particles and light materials are screened out through small screen holes, medium screen holes and large screen holes in a screen, and when the screen reciprocates up and down, the large particles and the medium particles are separated; the two symmetrically-arranged baffles are driven by the connecting rod to conduct continuous opening and closing actions, periodic opening and closing are achieved, the opening and closing frequency of the baffles is synchronous with the vibration frequency of the screen, dynamic control over falling materials is formed, it can be ensured that the materials falling every time are single-layer particles, multi-layer accumulation is avoided, and when the single-layer materials fall, the particles are evenly distributed in the vertical direction, and the quality of the particles is improved. Air flow can vertically act on each particle conveniently, the situation that bottom layer particles in multiple layers of materials cannot be effectively separated due to insufficient air flow penetration is avoided, and the screening precision is remarkably improved through linkage control of screen vibration and the baffles.

The utility model relates to the technical field of cleaning, in particular to a dust cup device and cleaning equipment, in the dust cup device, an air inlet gap is formed in the end, close to a partition plate, of an outer pipe, so that during secondary separation, the cyclone separation path of airflow is prolonged, and the dust-air separation effect is improved; and the performance and the user experience of the cleaning equipment are further improved.

The invention relates to the technical field of grading gangue selection of coal gangue, in particular to a grading gangue selection method of coal gangue, which comprises the following steps: acquiring mineral texture data through a multispectral imaging device, analyzing the spatial distribution of aluminum and silicon elements in combination with an X-ray diffractometer, and generating a three-dimensional component map through spatial registration and fusion with infrared heat value data; impurities are dynamically removed through sulfur element spectrum detection, and the air pressure and the material flow of winnowing equipment are adjusted by matching roasting process parameters; components of the sorted waste are analyzed through an X-ray fluorescence spectrometer, particle size data are obtained through a laser particle analyzer, a genetic algorithm is input to iteratively optimize detection channel combination and sampling density, a resource distribution instruction is generated, and equipment parameter correction is fed back. According to the method, aluminum-silicon ratio critical value accurate identification, sorting parameter dynamic adaptation and waste recycling path optimization are realized, and the problem of overburning caused by insufficient quantitative analysis of element distribution in the prior art is solved.

The utility model discloses hydrogen purification equipment and an ammonia production system, and relates to the technical field of hydrogen purification, and the hydrogen purification equipment comprises an air separation device, a hydrogen production device, a heat exchange part and a filtering part; the air separation device is provided with a refrigerant discharge pipe; the hydrogen production device is provided with a hydrogen discharge pipe; the heat exchange part is provided with a refrigerant inlet end, a hydrogen inlet end and a hydrogen outlet end, the refrigerant discharge pipe is communicated with the refrigerant inlet end, the hydrogen discharge pipe is communicated with the hydrogen inlet end, and a refrigerant discharged by the refrigerant discharge pipe and hydrogen discharged by the hydrogen discharge pipe can be subjected to heat exchange; the filter is provided with an inlet end and an outlet end which are mutually communicated; the inlet end is communicated with the hydrogen outlet end; according to the technical scheme, the utilization rate of hydrogen is increased.

The invention relates to the technical field of electric power control, in particular to a low-voltage power supply redundancy switching regulation and control method applied to an air separation system, which is applied to the air separation system comprising at least two independent low-voltage power supply input lines, and an emergency standby power supply is configured as a third redundancy input line. The method includes: acquiring a power state data set of a low-voltage power distribution system in real time; available feature extraction is carried out on the power supply state data set, and available characterization parameters of each input line are obtained; when any one of the available characterization parameters does not accord with a corresponding preset input line available threshold value, judging that the input line is unavailable; otherwise, marking as available; calculating the power redundancy based on the number of the available input lines and the total number of the input lines; in response to the condition that the power redundancy is lower than a preset redundancy threshold value, obtaining a switching decision feature set; and inputting the switching decision feature set into the power supply redundancy control model to obtain an optimal switching parameter set, and carrying out low-voltage power supply redundancy switching control based on the optimal switching parameter set.

The invention provides an improved ammonia production system based on a temperature swing adsorption principle. The improved ammonia production system comprises a water electrolysis hydrogen production module, a deep cooling air separation nitrogen production module, a multi-stage ammonia synthesis tower module and a double-bed circulating adsorption separation ammonia module, the water electrolysis hydrogen production module and the deep cooling air separation nitrogen production module provide raw material gas for the multi-stage ammonia synthesis tower module through a mixer, low-grade waste heat of a multi-stage ammonia synthesis tower serves as a heat source of the double-bed circulating adsorption separation ammonia module, and the double-bed adsorption separation ammonia module is connected with the multi-stage ammonia synthesis tower. The working conditions of an adsorption bed of the double-bed ammonia adsorption and separation module comprise an adsorption working condition and a desorption working condition, the adsorption bed alternately performs the adsorption working condition and the desorption working condition within the operation time, and low-grade waste heat from a multi-stage ammonia synthesis tower is used for driving to perform separation operation on ammonia synthesis gas so as to obtain high-purity ammonia; according to the invention, the operation pressure in an ammonia product separation project can be effectively reduced, circulation is formed, and the purity and the recovery rate of the obtained ammonia product are not reduced while the waste heat in the system is further utilized.

The invention discloses an analysis meter application method based on process requirements of an air separation device, and relates to the technical field of analysis meter application, pressure fluctuation data and accuracy data of different gas sampling are obtained, and the installation positions of different types of analysis meters are determined through fuzzy reasoning; establishing a correlation model for the analyzer with the determined installation position; when an adjacent analyzer triggers a wake-up demand, acoustic characteristics in the air separation device are obtained by using the acoustic sensor array, a prediction model is constructed by combining the acoustic characteristics and the correlation model, and whether the current analyzer needs to be awakened or not is judged through the prediction model; the method comprises the following steps: identifying a change trend of gas characteristics collected by the awakened analyzer by using a time sequence, judging whether sampling parameters of the awakened analyzer need to be adjusted or not according to the change trend, and further outputting the sampling parameters of the awakened analyzer based on a preset parameter adjustment mechanism. Accurate positioning, intelligent linkage and dynamic adjustment based on data driving are achieved, and the detection efficiency and operation stability of the air separation device are improved.

The invention provides a multi-stage identification plastic automatic separation and winnowing electrostatic synergistic separation system and method, and relates to the technical field of solid waste resourceful treatment. The system comprises an intelligent bag breaking and feeding module, a paving and shaping light source enhancing module, an AI identifying and stripping module, a wet material drying module, a negative pressure winnowing module, a high-voltage electrostatic deflection module and a multi-path collecting and outputting module. According to the system, automatic feeding and bag body breaking of household garbage are achieved, plastic materials capable of being recognized are spread to reduce the overlapping rate, efficient classification is conducted through the AI technology, and accurate sorting is conducted through wet drying and electric field electrostatic deflection. The plastic sorting efficiency is effectively improved, and equipment energy consumption and occupied space are reduced.

The utility model relates to a fault diagnosis circuit for an electric heating tube of an electric heater of an air separation unit, the fault diagnosis circuit comprises two current transformers, a light emitting diode and an adjustable resistor, the two current transformers are arranged close to an outgoing line of an electric heating tube bundle, the output ends of the current transformers are respectively connected with the light emitting diode and the adjustable resistor, and the adjustable resistor is connected with the light emitting diode. The light emitting diodes and the adjustable resistors are connected in parallel, the fault diagnosis circuit further comprises a panel, a plurality of fixing holes are formed in the panel in a square array mode, the light emitting diodes and the adjustable resistors are embedded in the fixing holes, and a numbering card is arranged on the panel close to the fixing holes. The electric heating tube bundle is provided with a wiring cover, and a number card is arranged on the wiring cover. According to the utility model, technicians can be helped to quickly judge the faulty tube bundle, so that the troubleshooting time of the electric heating tube is obviously shortened.

A liquefier device which may be a retrofit to an air separation plant or utilized as part of a new design. The flow needed for the liquefier comes from an air separation plant running in a maxim oxygen state, in a stable mode. The three gas flows are low pressure oxygen, low pressure nitrogen, and higher pressure nitrogen. All of the flows are found on the side of the main heat exchanger with a temperature of about 37 degrees Fahrenheit. All of the gases put into the liquefier come out as a subcooled liquid, for storage or return to the air separation plant. This new liquefier does not include a front end electrical compressor, and will take a self-produced liquid nitrogen, pump it up to a runnable 420 PSIG pressure, and with the use of turbines, condensers, flash pots, and multi pass heat exchangers. The liquefier will make liquid from a planned amount of any pure gas oxygen or nitrogen an air separation plant can produce.

A method for providing a nitrogen product, an oxygen product and a hydrogen product, wherein an air separation installation is used which is designed for the low-temperature separation of feed air and which has a rectification column system, the rectification column system comprising an air-fed rectification column and a main heat exchanger. The provision of the nitrogen product comprises, in particular, subjecting feed air to low-temperature rectification using the air-fed rectification column such that a tops gas is obtained, and using part of the tops gas as the nitrogen product. The provision of the oxygen product and the hydrogen product comprises subjecting water to water electrolysis in an electrolyzer, such that a water-containing oxygen stream and a hydrogen stream are obtained, the water-containing oxygen stream or part thereof being subjected, at least in one operating phase, to drying and, in an unmixed state, to liquefaction in the air separation installation.

The marine gas resistance reduction device is characterized in that the marine gas resistance reduction device comprises gas supply equipment, an air pipeline arranged in the length direction of the ship and a plurality of flow guide structures, and the flow guide structures are obliquely arranged on a ship bottom shell plate at intervals; the included angle between the arrangement direction of each flow guide structure and the water flow direction is smaller than 90 degrees, and the air pipeline communicates with air supply equipment and an air separation cavity between each flow guide structure and the hull bottom shell plate. The ship comprises the drag reduction device. The gas separation cavity is formed between the flow guide structures which are continuously arranged and the ship bottom shell plate, the generation range and the generation effect of the gas film layer are expanded, gas in the gas separation cavity is blocked by the flow guide structures which are arranged front and back in the dissipation process, the gas loss speed is reduced, and through the design that the flow guide structures are not perpendicular to the water flow direction, the gas film layer generation effect is improved. The resistance borne by the flow guide structure is reduced, and the resistance reduction effect of the marine gas resistance reduction device is improved on the whole.

The invention discloses an isolated network green power-green hydrogen-green ammonia three-flexible coupling integrated system and an operation method. The system comprises a wind-light storage flexible power generation system, a renewable energy flexible water electrolysis hydrogen production system and a flexible low-temperature low-pressure ammonia synthesis system. The wind and light storage flexible power generation system is used for carrying out green energy power generation through wind power generation equipment and photovoltaic power generation equipment, and carrying out flexible adjustment on the output power generation amount according to a wind power and photovoltaic output curve coupled by electric energy storage equipment; the renewable energy flexible water electrolysis hydrogen production system is used for flexibly adjusting the hydrogen output quantity by starting and stopping the number of hydrogen production electrolytic cells in the hydrogen electrolysis hydrogen production device and the hydrogen energy storage equipment; the flexible low-temperature and low-pressure ammonia synthesis system is used for automatically reducing or increasing the load of the ammonia reactor and generating green ammonia according to the hydrogen output quantity of the renewable energy flexible electrolytic water hydrogen production system and the nitrogen output quantity of the air separation equipment. The problems that a stable power supply is needed for traditional ammonia hydrogen production and flexible production cannot be achieved due to the fact that traditional ammonia synthesis is limited by the narrow load application range are solved.

This disclosure relates to the adsorption and separation of fluid components, such as oxygen, in a feed stream, such as air, using zeolite ITQ-55 as the adsorbent. A process is disclosed for adsorbing oxygen from a feed stream containing oxygen, nitrogen and argon. The process comprises passing the feed stream through a bed of an adsorbent comprising zeolite ITQ-55 to adsorb oxygen from the feed stream, carrying out an equalization step to improve recovery, thereby producing a nitrogen product stream depleted in oxygen as well as a waste stream can be collected to have enriched oxygen. The feed stream is exposed to the zeolite ITQ-55 at effective conditions for performing a rapid cycle of kinetic separation, in which oxygen exhibits greater kinetic selectivity than nitrogen and argon.

The invention relates to the technical field of agricultural separation equipment, in particular to a winnowing separation bin and a hay feed cleaning system.The winnowing separation bin is provided with an obliquely-arranged side wall, so that airflow entering the bin is decelerated firstly and then accelerated, and large materials and materials with the small wind area are different from thin film materials in wind area and inertia, so that the hay feed is separated from the large materials. The large materials and the materials with the small wind area are collected at the discharging opening in the bin bottom, the film materials are discharged through the air outlet, separation of the film materials and straw is completed, the separation efficiency is improved, and the content of mulching films in smashed straw feed is reduced when the device is applied to the field of feed separation. According to the hay feed cleaning system, light materials separated by the winnowing separation bin are fed into the feeding device or the light material treatment device to be further treated and collected, the stability of the separation effect can be improved, waste of the materials is avoided, meanwhile, mulching films are purified to reach the recycling standard, waste is turned into wealth, and two purposes are achieved.

The invention relates to an air separation device internet of things monitoring method based on a computer serial port, and relates to the technical field of internet of things communication, and the method comprises the steps: monitoring and collecting air separation operation data in an air separation device through an air separation device operation station, carrying out the local abnormality analysis, and obtaining a local abnormality parameter; performing space division anomaly judgment according to the local anomaly parameters, if not, transmitting space division operation data to an Internet of Things communication module through a computer serial port, and if yes, directly transmitting the space division operation data to the Internet of Things communication module; if yes, sending the space division operation data to a cloud server, configuring an exception continuous identification coefficient according to data characteristics of the space division operation data and local exception parameters, performing exception continuous integration identification, and obtaining an exception continuous window; and configuring the air separation unit operation station according to the abnormal continuous window. According to the invention, the technical problem that network risks exist when the air distribution device monitors the Internet of Things in the prior art is solved.

The invention belongs to the technical field of gas separation, and particularly relates to a zero-gas-consumption PSA (Pressure Swing Adsorption) air separation nitrogen-making device which comprises an adsorption tower, a top cover, a gas outlet pipe, a gas inlet pipe and an electromagnetic valve, the protection mechanism is arranged at the joint of the adsorption tower and the top cover; the back flushing mechanism is arranged at the upper end of the adsorption tower; the blocking mechanism comprises a blocking part arranged in the air outlet pipe, an abutting part is arranged on the blocking part, an adjusting part is arranged on the abutting part, and the pressure generated by the abutting part on the blocking part is adjusted by twisting the adjusting part; wherein the protection mechanism comprises an outer shell, the outer shell is composed of two shell bodies, reinforcing parts are annularly distributed in the outer shell, and warning parts and linkage parts are arranged on the reinforcing parts. According to the invention, a high-efficiency zero-gas-consumption air separation nitrogen production process can be realized; and meanwhile, good safety protection measures are taken, and the situation of gas leakage is reduced.

The invention discloses a liquid air energy storage system based on air separation, which is characterized by comprising an air purification unit, an energy storage unit, an air rectification unit and an LNG (Liquefied Natural Gas) cold supply unit, wherein the air purification unit comprises an air filter, an air compressor, a first cooler, an adsorber and a first heater, and the energy storage unit comprises a first liquid separation tank, a liquid air storage tank, a liquid air pump and an air expansion machine. The air rectification unit comprises a rectification tower, a main cold box, a second liquid separation tank, a second subcooler, a first heat exchanger, a liquid nitrogen storage tank, a liquid oxygen storage tank, a second heat exchanger, an argon rectification system and a liquid argon storage tank; and the LNG cold supply unit comprises a first nitrogen supercharger, a second nitrogen supercharger, an LNG cold box and a first subcooler. The system has the functions of air separation and electric energy storage at the same time, and cold energy of the LNG receiving station is fully utilized for air separation and energy storage to participate in construction of a novel power system of a power grid.

The invention relates to an extractor hood and a control method thereof.The extractor hood comprises a machine shell and a draught fan arranged in the machine shell, an oil fume parameter detector is arranged in the machine shell and comprises an optical signal sensor, and the oil fume parameter detector further comprises a Venturi tube and a vortex generator enabling fluid to generate vortex motion; the swirl generator is arranged in the Venturi tube and is adjacent to the inlet end of the Venturi tube; and the optical signal sensor is positioned at the downstream of the airflow direction of the swirl generator. According to the range hood, oil smoke concentration and airflow speed detection can be achieved at the same time without an additional flow sensor, separation of oil smoke and air is increased through the spiral flow generator, the detectability of oil smoke changes is further improved through Venturi acceleration, spiral precession of the vortex core around the axis also strengthens rotary separation of air and oil smoke, and the detection efficiency is improved. The action intensity of oil smoke on light is enhanced, so that the detection of small smoke is expanded more conveniently, and the purposes of wide measuring range, high linearity and more reliable detection are achieved.

The invention discloses a zero-carbon glass kiln process. A system required by the process comprises a photovoltaic power generation device, an air separation device, a water electrolysis hydrogen production device, a mixer, a methanation device, a waste heat boiler I, a reforming device, a glass kiln, a waste heat boiler II and a dust removal and desulfurization device. Green oxygen, green nitrogen and green hydrogen are produced through green electricity driving; the flue gas of the glass kiln is cyclically enriched into high-concentration carbon dioxide (95.0 v% or above), the high-concentration carbon dioxide and green hydrogen are subjected to a methanation reaction to produce methane, and the methane, the carbon dioxide and water vapor are subjected to a reforming reaction to produce carbon monoxide and hydrogen; carbon monoxide and hydrogen are used as fuel of the glass kiln, green oxygen and carbon dioxide are mixed to form carbon-based oxygen-enriched combustion which is used as a combustion improver of the glass kiln, carbon-based oxygen-enriched combustion of the glass kiln is carried out, and redundant carbon dioxide is sold. According to the invention, the purposes of greenness, energy conservation, almost no nitrogen oxide and zero carbon are realized.

The invention relates to the technical field of road engineering, and discloses a construction waste regenerated mixed aggregate grading determination method which comprises the following steps: step 1, construction waste pretreatment and crushing parameter acquisition; the method comprises the following steps: S1, carrying out multi-stage crushing on the construction waste through combined operation of a jaw crusher and an impact crusher, collecting a crushed particle size distribution curve of recycled aggregate, and measuring the proportion of needle-sheet-shaped particles and surface roughness parameters; and S2, metal and light impurities are separated through magnetic separation and winnowing equipment, and it is ensured that the metal residual rate is smaller than 1%, and the wood / plastic residual rate is smaller than 3%. According to the construction waste recycled mixed aggregate grading determination method, a recycled aggregate dynamic grading model is established on the basis of the crushing fractal rule and the maximum compactness theory, grading design precision is remarkably improved, it is ensured that the performance of a mixture is equivalent to that of natural aggregate, and a construction waste resource utilization path is optimized through a grading replacement strategy.

A process and a plant for the production of hydrogen or for the synthesis of ammonia, said process comprising the following steps: (a) performing a reforming process (101) of a hydrocarbon feedstock (1) to generate a raw syngas (2), said reforming process comprising at least an autothermal reforming step (104) in presence of oxygen-enriched air or pure oxygen (3) produced by an air separation unit (ASU; 103); (b) subjecting said raw syngas (2) to a post-treatment (102) providing hydrogen (H2; 4), a CO2-enriched stream (5), and a residual gas (6); said post-treatment comprising at least a water gas shift conversion step (105) of said raw syngas into a shifted syngas (7), a pressure swing absorption step (106), and a cryogenic separation step (107); wherein said pressure swing absorption step produces said hydrogen and a first tail gas (8) comprising carbon monoxide (CO), carbon dioxide (CO2), residual hydrogen (H2) and unreacted hydrocarbon feedstock from the shifted syngas (7), and said cryogenic separation step separates the CO2-enriched stream and a second tail gas (9) from said first tail gas; said post-treatment (102) comprising a further separation step (120) of a CO2-containing stream (11) and of the residual gas (6) from said second tail gas; (c) recycling said residual gas (6) as feed to said reforming process and / or as fuel to one or more fired heater(s) (10) of said process; (d) optionally feeding a portion (4.8) of said hydrogen (4) obtained in step (b) as fuel to one or more fired heater(s) of said process; (e) optionally an ammonia synthesis step (110) wherein said hydrogen (4) and a nitrogen (N2)-containing stream (12) produced by said ASU (103) are reacted in a given stoichiometric ratio and in ammonia (NH3) synthesis conditions to obtain an ammonia-containing product (13).

The invention relates to a stable and continuous photovoltaic green ammonia synthesis system which comprises a photovoltaic power generation device, a water electrolysis hydrogen production device, a green ammonia synthesis device, an electrochemical energy storage device, a green hydrogen storage tank and a nitrogen production air separation device, the photovoltaic power generation device is simultaneously connected with the power supply ends of the water electrolysis hydrogen production device, the green ammonia synthesis device and the nitrogen production air separation device and the input end of the electrochemical energy storage device through power transmission lines; the electrochemical energy storage device is simultaneously connected with the power supply ends of the green ammonia synthesis device and the nitrogen-making air separation device through power transmission lines; the output end of the water electrolysis hydrogen production device is respectively connected with the input ends of the green hydrogen storage tank and the green ammonia synthesis device through material conveying pipelines; and the input end of the green ammonia synthesis device is also respectively connected with the output ends of the green hydrogen storage tank and the nitrogen-making air separation device through material conveying pipelines. According to the invention, stable and continuous operation of the green ammonia production system under different weather conditions can be ensured, no electricity needs to be purchased, and energy conservation and environmental protection are truly realized.

The invention relates to a strengthening treatment and automatic separation system for construction waste recycled aggregate, and innovatively provides a technical route of'multistage crushing, magnetic separation, winnowing, flotation linkage and aggregate strengthening 'aiming at the core problems of more impurities and low strength of the recycled aggregate. The system comprises a pretreatment module (for removing large impurities), a multi-stage crushing module (for controlling grain shapes), a linkage sorting module (for removing plastics through winnowing, removing wood chips through flotation and carrying out photoelectric precise sorting), an aggregate strengthening module (for improving strength through microwave activation and nanometer coating) and an intelligent control center. By establishing a magnetic separation efficiency model, a grain shape optimization model and a strength prediction algorithm, the aggregate purity is greater than 98% (XRF detection), and the compressive strength is improved by 40% (ISO 679 verification); the energy consumption in the sorting link is reduced by 30%, and the reinforced aggregate can replace natural aggregate to prepare C40 concrete. The bottleneck of high-value utilization of the construction waste is broken through, and circular economy development is promoted.

The present invention relates to a method and an apparatus for obtaining CO2 from a gaseous medium, in particular ambient air, using a CO2 separation device comprising a CO2 scrubber with a gas supply and a gas discharge, a sorbent supply at an upper end of the CO2 scrubber, and a first intermediate tank for receiving a CO2-enriched sorbent from the CO2 scrubber; and an electrodialysis device for separating CO2 into a release medium. The method comprises enriching the sorbent with CO2 in the CO2 scrubber, supplying the CO2-enriched sorbent to the first intermediate tank, removing a first portion of the enriched sorbent from the first intermediate tank to the electrodialysis device, and returning a second portion of the enriched sorbent from the first intermediate tank to the CO2 scrubber.The process is designed to be carried out continuously, semi-continuously, or in batches.