937 results about "Air separation" patented technology

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 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 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.

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.

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 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.

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 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 wind power mineral separator comprises a supporting frame, a winnowing cavity, a wind cavity and a circulating wind pipe, the winnowing cavity is installed on the supporting frame, the interior of the winnowing cavity is hollow, a feeding hopper is arranged on the top of the winnowing cavity, and a sand discharging opening and an opening are formed in the bottom of the winnowing cavity; the air cavity is installed on the supporting frame, the interior of the air cavity is hollow, a fan is rotationally arranged in the air cavity, and one end of the air cavity communicates with the winnowing cavity; air flow blows passing minerals when passing through the winnowing chamber, and according to the principle that different specific gravities are different and transverse moving distances are different when the air flow is blown by uniform-speed equal-quantity air, different minerals finally have different falling points on a material plate, so that separation is achieved, and meanwhile dust blown by the air flow is separated by the air flow. Heavy gravels and the like are discharged from the sand discharge port, and light dust flows back into the air cavity from the circulating air pipe along with airflow, so that the dust circulates in the device, and the dust is prevented from rising.

The invention discloses an air separation pressure swing intelligent adsorption pollution discharge method, system and device combined with a pressure curve, and relates to the technical field of intelligent pollution discharge. The air separation pressure swing intelligent adsorption pollution discharge method, system and device combined with the pressure curve comprises the following steps: S1, collecting running state data in real time, and preprocessing the running state data; s2, performing pressure disturbance intensity analysis on the operation state data; s3, performing real-time analysis and feature extraction on the pressure curve; s4, performing start-stop risk prediction on the operation state data; and S5, integrating the operation state data, the pressure disturbance intensity analysis result and the start-stop risk prediction result to execute a pollution discharge control instruction. The problems that an air compressor and a pressure swing adsorption system lack linkage control based on pressure change, pollution discharge easily causes pressure fluctuation and frequent starting and stopping, energy consumption is increased, equipment abrasion is caused, and an existing control mode lacks a feedforward adjusting mechanism are solved.

The invention relates to the technical field of air separation production line health scoring, and provides an air separation production line health scoring method based on a multivariate heterogeneous model, and the method comprises the steps: S1, collecting the state data, working condition data and process data of an air separation production line; s2, in order to prevent the influence of abnormal data on the model construction of the system, carrying out abnormal value preprocessing on the collected data; s3, based on the preprocessed data, performing multi-dimensional early warning through adaptive threshold early warning, trend early warning and AI early warning; s4, after parameters in the air separation production line equipment trigger early warning, fault diagnosis is carried out only for rotary equipment and only in the vibration parameter or temperature parameter early warning scene of the bearing of the equipment; and S5, respectively calculating scores of the threshold model, the trend model, the A model and the mechanism model, and calculating a total health degree score of the system through weight configuration. The health management system for the space division industry is provided, and the overall operation condition of a production line can be effectively evaluated.

The invention belongs to the technical field of ore screening, and discloses a semantic segmentation-based layered vibrating screen undersize particle size detection system and a semantic segmentation-based layered vibrating screen undersize particle size detection method. The material weighing device comprises a weighing belt arranged below the vibrating screen, a first driving motor connected with the weighing belt and a first bracket connected with the weighing belt and the first driving motor; the material detection device comprises a detection belt collinear with the weighing belt, a second driving motor connected with the detection belt, and a light supplementing lamp and an industrial camera which are arranged above the detection belt; the detection belt and the second driving motor are supported by a second bracket; the industrial camera faces the detection belt, and the processor is connected with the industrial camera, the second driving motor and the first driving motor. The online detection system disclosed by the invention integrates the functions of image acquisition, weighing measurement, winnowing dust removal and the like, and has the characteristics of compact structure and complete functions.

The invention relates to the technical field of air separation, in particular to a pretreatment module of an air separation system, a high-purity air separation system and a control method.The pretreatment module comprises a precooling unit, and the precooling unit is connected with a cold source; the pre-cooling unit enables cooling water to circularly flow in the supercharging unit through a cooling water pipeline, and the supercharging unit comprises a first air compressor, a second air compressor, a high-temperature expansion machine supercharging end, a first supercharger after-cooler, a low-temperature expansion machine supercharging end and a second supercharger after-cooler which are sequentially connected in series through a main pipeline; supercharged and precooled air is expanded and cooled by the expansion unit and then enters the heat exchange unit; through the arrangement of the pre-cooling unit, the inlet and outlet temperatures of the high-temperature expansion machine and the low-temperature expansion machine are effectively controlled, reheated air returns to the air compressor, the expansion gas amount is increased, reheated gas continuously cools the air participating in rectification in the heat exchange unit, and in conclusion, the production energy consumption of a high-purity liquefied gas product is reduced.

A device and a method for producing hydrogen and byproduct oxygen by using green electricity electrolyzed water are provided. The device comprises an oxygen purifying system, a heat exchange system, an air separation compression and expansion system, an air separation rectification system and a liquid oxygen storage system. The method comprises the following steps: first, purifying oxygen prepared by electrolyzing water by green electricity to remove impurities such as hydrogen, carbon monoxide, carbon dioxide and water in the oxygen, then feeding the pure oxygen into the heat exchange system, performing heat exchange liquefaction to obtain liquid oxygen, coupling the liquid oxygen generated by rectification of the air separation rectification system, and obtaining pressurized oxygen through the heat exchange system and the air separation compression and expansion system.

The invention relates to the technical field of organic sulfide preparation, in particular to a method for synthesizing and refining dimethyl sulfide (DMS) and dimethyl sulfoxide (DMSO) embedded into a methanol plant, which mainly utilizes high-purity oxygen of an air separation unit of the methanol plant, a high-concentration hydrogen sulfide product of low-temperature methanol washing and part of top gas-phase refined methanol of a pressurizing tower of a methanol rectification device. The production cost of the product is reduced, the added value of the product is improved, and the hydrogen sulfide product of a methanol plant is effectively utilized.

Provided are an air separation device and an air separation method that have high argon yield without increasing the heat transfer area of a deoxidized argon condenser that generates reflux liquid in an argon tower generating deoxidized argon to be used as a raw material in a high-purity argon tower. Specifically provided is an air separation device comprising: an argon tower (700) that distills argon-containing oxygen drawn from a low-pressure tower (600) and generates deoxidized argon from which oxygen has been removed; a deoxidized argon condenser (400) that generates reflux liquid in the argon tower (700); a high-purity argon tower (800) that distills deoxidized argon and extracts pure argon from which nitrogen has been removed; a high-purity argon condenser (900) that generates reflux liquid for the top portion of the high-purity argon tower (800); a high-purity argon evaporator (910) that generates ascending gas for the bottom portion of the high-purity argon tower (800); a pipeline (622) that sends liquid nitrogen to the high-purity argon condenser (900) as a cooling medium; and a pipeline (42) that sends liquid derived from a high-pressure tower (500) to the high-purity argon evaporator (910) as a heating medium.

The invention discloses a cold-resistant low-smoke airtight explosion-proof low-voltage power cable, and relates to the technical field of cables, an extrusion airtight assembly is arranged on the outer side of an inner insulating layer, a reinforced heat conduction wire is arranged in a middle supporting pipe, a one-way air pipe is installed in the middle of an air separation plate in a penetrating manner, and flexible isolation boxes are uniformly arranged on the outer side of the middle supporting pipe; the conductors are electrified to generate heat, carbon dioxide is heated to expand, the conductors and the filling layer are extruded, the inner protection layer is extruded to be tightly attached to the armor layers with high hardness, the gaps between the armor layers are sealed by the sealing rubber strips, and because the heated expansion rate of the carbon dioxide is larger than that of air, the bending supporting assembly is arranged on the outer side of the outer protection layer. The inner gap of the cable is extruded, so that the interior of the cable is more compact, the air in the cable is reduced, the air tightness in the cable is better, the cable is not easy to damage due to extrusion, and even if the cable is on fire at high temperature, carbon dioxide can inhibit combustion, so that fire spreading is better avoided.

The invention discloses a regeneration method of building solid waste high-quality recycled aggregate. The method comprises the following steps: raw material pretreatment: removing impurities by adopting an AI vision-near infrared spectrum collaborative sorting method, pre-crushing by adopting a crushing parameter dynamic closed-loop control method, and pre-screening and removing mud by adopting a gradient spraying-negative pressure mud removal method; performing multi-stage crushing, namely performing intermediate crushing by adopting a lamination energy grading distribution method and performing fine crushing by adopting a dual-mode switching shaping method; a magnetic field-rotating speed linkage optimization method is adopted for magnetic separation, a density grading winnowing method is adopted for removing light impurities, an ultrasonic wave-water flow collaborative cleaning method is adopted for deep cleaning, and a negative pressure-high frequency vibration collaborative powder removal method is adopted for powder removal; performing particle optimization: performing shaping by adopting a real-time morphology feedback-energy regulation and control method, and performing secondary screening by adopting an intelligent grading-backflow regulation and control method; dehydrating and drying; managing and controlling finished products; storing and transporting; the finally produced recycled aggregate satisfies the following conditions: the crushing value is less than or equal to 23%, the mud content is less than or equal to 0.3%, the needle-sheet content is less than or equal to 12%, the roundness coefficient is greater than or equal to 0.75, the water content is 3-5%, and the recycled aggregate is adaptive to C30 and above recycled concrete.

A process includes feeding atmospheric air to an air separation unit to produce a flow of nitrogen and a flow of oxygen; combining the oxygen with a hydrocarbon flow and water in an auto-thermal reformer to produce a retentate stream to a membrane water gas shift reactor (M-WGSR); generating, from the retentate stream to the M-WGSR, a permeate stream from the M-WGSR that includes a first flow of carbon dioxide and a first combined flow of hydrogen and nitrogen; feeding a retentate stream to a membrane steam methane reformer (M-SMR) to produce a permeate stream from the M-SMR that includes a second flow of carbon dioxide and a second combined flow of hydrogen and nitrogen; feeding the first and second combined flows to an ammonia synthesis unit to produce ammonia; and feeding the first and second flows of carbon dioxide and the ammonia to a urea synthesis unit to produce a flow of urea by fully utilizing the carbon dioxide.

The utility model discloses an atmospheric pressure liquid nitrogen storage tank emptying low-temperature nitrogen cooling capacity recovery system, which relates to the technical field of deep cooling and comprises a liquid nitrogen storage tank, a standby regulating valve on the liquid nitrogen storage tank is connected with a low-temperature supercharger through a pipeline, and the outlet end of the low-temperature supercharger is connected with a vacuum heat preservation pipeline. The outlet end of the vacuum heat preservation pipeline is connected with an emptying pipeline and a conveying pipeline used for being connected with a nitrogen pipeline in an air separation device, and the output end of the nitrogen pipeline is further connected with a heat exchanger. The supercharged low-temperature nitrogen is conveyed to a nitrogen pipeline in the air separation device through a vacuum heat preservation pipeline and a conveying pipeline, so that the supercharged low-temperature nitrogen is converged with nitrogen produced by the air separation device, then enters the heat exchanger, is subjected to heat exchange with positive flow air in the heat exchanger, is reheated and then is discharged out of the cold box, and therefore the purpose of recycling cold energy is achieved.

The invention discloses a liquid air energy storage and low-temperature air separation combined system and method, which comprises an air compression subsystem, an air purification subsystem, a heat storage subsystem, a liquid gasification subsystem, a cold storage subsystem, an energy release power generation subsystem, a low-temperature air molecular system and a central cooperative control module, the air compression subsystem is composed of multiple sections of compressor units, an interstage cooler and related pipeline valves, and the interstage cooler is connected with the heat storage subsystem. According to the low-temperature air separation system, high-energy-consumption compression expansion equipment does not need to be independently built in a matched mode, the investment cost of the system is greatly reduced, and the low-temperature air separation system can achieve air separation production only through air raw materials continuously provided by the liquid air energy storage system and cold energy supply; compression power consumption in a traditional low-temperature air separation system is greatly reduced, and meanwhile waste of compression heat energy is reduced.

The present application relates to the technical field of direct air carbon capture, in particular to a solar-driven air thermo-chemical deoxidization direct air carbon capture method and system, the present application adopts chemical looping air separation technology, first removes oxygen in air through an oxidation reactor and a reduction reactor, then sends the oxygen-poor air into a DAC carbon capture unit for decarburization, which can greatly reduce the air treatment amount of the DAC unit; at the same time, the present application uses solar energy to power the chemical looping reduction reactor, realizing clean and efficient power supply of the DAC unit; therefore, the solar-driven air thermo-chemical deoxidization direct air carbon capture method and system of the present application adopts a combination of chemical looping air separation and DAC, and uses the oxygen-poor air at the outlet of the chemical looping air separation oxidation reactor to drive a waste heat power generation unit to generate power, so as to meet the power and steam supply of the air decarburization process, thereby solving the problems of high energy consumption and high cost of the existing DAC technology.

The invention relates to a high-pressure air separation liquid valve with a multi-stage low-temperature self-tightening sealing structure, which relates to the technical field of low-temperature high-pressure fluid control and comprises a valve body assembly, a multi-stage sealing assembly and a valve rod thermal compensation assembly. The multi-stage sealing assembly is arranged on the valve element in a stepped mode and comprises a primary metal hard sealing ring, a secondary modified PTFE sealing ring and a three-stage self-tightening type metal spring energy storage ring, and the main sealing function, the flexible compensation function and the pressure self-tightening function are achieved respectively. The valve rod thermal compensation assembly comprises a titanium alloy valve rod and a copper-nickel alloy thermal buffer sleeve, and the displacement of the sealing face is automatically compensated at the low temperature through the difference between a reserved gap and the thermal expansion coefficient of a material. Through multi-stage sealing cooperation and intelligent thermal compensation, the problem of sealing leakage caused by material failure and thermal deformation under the ultralow-temperature and high-pressure working conditions is effectively solved, all-working-condition reliable sealing is achieved, the safety of the valve in the extreme environment is remarkably improved, and the service life of the valve in the extreme environment is remarkably prolonged.

Pure liquid nitrogen, liquid air or dirty liquid nitrogen generated by a rectifying tower of the air separation device is subjected to secondary pressurization through a hydraulic pump and then enters a main heat exchanger or a recooling device to recover cold energy, and high-pressure gas formed by heat absorption and gasification enters a high-pressure expansion machine to expand and do work; exhaust gas of the high-pressure expansion machine enters the rectifying tower to provide cold energy required by air separation, and pure nitrogen, waste nitrogen and pure oxygen which are discharged from the rectifying tower and are subjected to cold energy recovery through the main heat exchanger are output. The purposes of energy conservation and consumption reduction of the air separation device are achieved through the processes of primary pressurization of the compressor, secondary pressurization of the hydraulic pump, cold returning, gasification and expansion.

The application discloses a two-step high-purity nitrogen preparation process, and a device required by the process comprises a filter, an air compressor, an air precooling system, a purification system, a main heat exchanger, a nitrogen column, a main condensation evaporator I, a supercooler, an argon removal column, a main condensation evaporator II and an expander. The raw material air is separated by a nitrogen column rectification to obtain pressure nitrogen, and then the pressure nitrogen is introduced into the argon removal column as raw material gas to continue rectification, so that high-quality nitrogen product and low-quality nitrogen product can be obtained at the same time, the high-quality nitrogen product can meet the production process requirements of high-end chips, and the low-quality nitrogen product can be supplied to users with relatively low requirements on impurities such as argon content and oxygen content, so that the demand of users on different quality nitrogen products can be met to the maximum extent. The application can also provide high-quality liquid nitrogen product.

The invention relates to the technical field of plasma electric flame stoves, in particular to a system for supplying nitrogen through centralized air separation for an electric flame stove and a working method. The system comprises an air compression and pretreatment unit, a pressure swing adsorption separation unit, a nitrogen buffer pressure stabilization unit, a nitrogen distribution conveying pipe network, a user side regulation and control unit and at least one electric flame stove which are sequentially connected in the gas flow direction. According to the invention, through centralized nitrogen generation and pipeline distribution, the problem of large-flow nitrogen supply of dispersed users is solved, and the emission of nitrogen oxides is greatly reduced due to the use of oxygen-free nitrogen by the electric flame stove. According to the system, indoor oxygen supplementation of oxygen-enriched gas and domestic hot water recovery of compressed waste heat are achieved at the same time, and the comprehensive utilization efficiency of resources is improved; by adopting the carbon steel pipe net, the construction cost is reduced, and nitrogen with different purities can be flexibly produced to meet multiple requirements; and real-time matching of nitrogen supply and stove power is realized through intelligent flow control of a user side, and stable and efficient operation is guaranteed.

The present invention relates to a cold-electricity integrated utilization system based on energy coupling, comprising: an LNG receiving station, wherein LNG is gasified into natural gas after being utilized for cold energy by a cold energy power generation and refrigeration system, a liquid air energy storage system, a cold energy air separation system, and a light hydrocarbon separation system. The natural gas then enters the natural gas pipeline network, the gas-fired power generation system, and the natural gas hydrogen production system; the cold energy power generation and refrigeration system utilizes cold energy to generate electricity for self-use within the plant area, with excess electricity transmitted to the power grid, while also producing refrigerated products; the liquid air energy storage system utilizes cold energy to generate electricity for self-use within the plant area, with excess electricity transmitted to the power grid; the cold energy air separation system utilizes cold energy to produce liquid oxygen, liquid nitrogen, and liquid helium; the light hydrocarbon separation system utilizes cold energy to produce ethane and LPG products; the gas-fired power generation system utilizes natural gas to generate electricity and transmits it directly to the power grid; and the natural gas hydrogen production system utilizes natural gas to produce hydrogen. The present invention can be widely applied to the field of LNG cold energy utilization technology.

The application discloses a pressure curve combined air separation variable pressure intelligent adsorption blowdown method, system and device, relates to the intelligent blowdown technical field.The pressure curve combined air separation variable pressure intelligent adsorption blowdown method, system and device, comprising the following steps: S1, real-time acquisition operation state data, and pretreatment is carried out to operation state data;S2, operation state data is analyzed to pressure disturbance intensity;S3, through real-time analysis and feature extraction to pressure curve;S4, operation state data is predicted to start-stop risk;S5, comprehensive operation state data, pressure disturbance intensity analysis result and start-stop risk prediction result execute blowdown control instruction.The air compressor and variable pressure adsorption system lack linkage control based on pressure change, blowdown is easy to cause pressure fluctuation and frequent start-stop, which leads to energy consumption increase and equipment wear, and the existing control mode lacks feedforward regulation mechanism.

The application discloses a household garbage fine separation method and system suitable for pyrolysis and fermentation, and belongs to the technical field of solid waste treatment and resource utilization, and comprises pre-crushing, first magnetic separation, drum screening, air separation, fine crushing, second magnetic separation and Raman light selection; a separation equipment integrating a visual sensor and a laser Raman spectrum probe is adopted to identify and separate the material after the second magnetic separation, so that different kinds of plastics are separated based on the molecular vibration fingerprint information of the material; wherein each step is uniformly scheduled and controlled by an automatic control system according to a preset program or real-time feedback parameters, and the dust generated in the whole process is collected and purified by a tail gas dust removal control system. Through the construction of a multi-stage collaborative process route, the material is fully dissociated and purified step by step, and the problems of low separation precision and poor system collaboration are solved by cooperating with automatic unified scheduling and full-process dust removal.