1421 results about "Oxygen enrichment" patented technology

The invention provides a smelting method for improving the stability of a blast furnace under the condition of high gas utilization rate, which comprises the following steps: step 1, using a bell-less furnace top, and preparing charging materials in a tank combination manner, the charging materials comprising coke and ore; step 2, annularly distributing the coke and the ore at a preset angle position in the blast furnace by adopting a simultaneous loading and distributing method; and step 3, keeping the gas utilization rate at 48-54.0%, carrying out blast furnace smelting, dynamically adjusting the oxygen enrichment amount and the coal injection amount of the blast furnace according to the furnace building condition, dynamically adjusting the fuel ratio or the air volume of the blast furnace according to the gas utilization rate decreasing condition, and dynamically adjusting the coal injection amount or the clean coke of the blast furnace according to the stockline decreasing condition. By accurately controlling the ore coke distribution gradient, forming a coal gas flow structure with heavy loads on the edge and an open center, the pressure difference in the furnace can be stabilized through linkage adjustment of the oxygen enrichment amount and the coal injection amount, the fuel ratio / air volume dynamically adjusts and compensates a heat notch, furnace temperature fluctuation is avoided, and the activity of the hearth is rapidly recovered according to the stockline abnormity, the coal injection or net coke supplement strategy.

The invention provides a comprehensive energy system optimization scheduling method and device considering diversified application of wind, light and green power, electronic equipment and a storage medium, and relates to the technical field of new energy technology and power system integration optimization. According to the method, a comprehensive energy system mathematical model integrating wind, light, green electricity, a hydrogen and ammonia production process, thermal power ammonia-doped combustion and thermal power oxygen-enriched combustion is constructed; combining the comprehensive energy system mathematical model to construct a comprehensive energy system scheduling model considering cost effectiveness, new energy utilization rate and environmental protection; and selecting a target solution algorithm from the plurality of solution algorithms, constructing an operation scene, and performing simulation solution on the integrated energy system scheduling model to obtain an integrated energy system optimization scheduling result. According to the embodiment of the invention, wind-solar-green-electricity hydrogen production ammonia synthesis and thermal-electricity ammonia-doped combustion and oxygen-enriched combustion technologies are effectively integrated, an ecological system for efficient cyclic utilization of energy and resources is created, and green transformation and industrial upgrading of an energy structure are promoted.

The invention provides a treatment method of copper-nickel concentrate rich in platinum group metals, which comprises the following steps: feeding the copper-nickel concentrate rich in platinum group metals and a first flux into a smelting furnace, and introducing first oxygen-enriched gas for smelting; copper matte and a second flux are continuously fed into a first converting furnace, and second oxygen-enriched gas is continuously introduced for first converting; raw copper and a third flux are fed into the oxygen inclined blowing rotary converter, and oxygen is introduced for second blowing; the crude copper is fed into an anode refining furnace, and air and a first reducing agent are introduced for fire refining; casting the copper liquid into an anode plate, and carrying out electrolytic refining on the anode plate; feeding the first converting slag, the second converting slag, a second reducing agent and a vulcanizing agent into a dilution electric furnace for slag dilution to obtain low-nickel matte and dilution slag; and the low-nickel matte is fed into a third converting furnace, air or oxygen-enriched air is introduced for third converting, and the problem that the recovery rate of nickel metal elements and platinum group metals in the copper-nickel concentrate rich in the platinum group metals is low is solved.

The utility model discloses a high-efficiency energy-saving ceramic handicraft firing kiln, which comprises a kiln body and has the beneficial effects that a kiln car and a firing frame are arranged, so that the kiln car can be pulled out of the kiln body, the kiln car is supported in an auxiliary manner through a guide roller at the top of a guide support plate, and the kiln car and the firing frame are pulled out, so that the kiln car can be conveniently fired. Ceramic needing to be fired can be conveniently placed on the firing frame, the position of the kiln car in the kiln body is jacked and fixed through the inner jacking block on the inner side of the kiln door, the kiln car and the firing frame are stably placed in the kiln body, the stability of the position during ceramic firing is improved, and through the arrangement of the heat preservation box and the heat exchange copper gas pipe, high-temperature smoke in the heat preservation box is achieved; gas treated by the oxygen enrichment device in the heat exchange copper gas pipe is heated, the temperature of combustion-supporting gas is increased, the combustion-supporting gas is mixed with gas supplied by the gas pipe in the concentration gas box, the mixture is sprayed out through the ventilation box and the combustion nozzle, ignition is conducted through the ignition rod, and ceramic firing is conducted through fuel.

The invention relates to the technical field of medical oxygen generators, and discloses an efficient and energy-saving PSA oxygen generator which comprises an adsorption tank, a gas inlet pipeline, a nitrogen discharge pipeline, an I-shaped balance pipeline, a first purging pipeline, a second purging pipeline, an oxygen outlet pipeline, a purity measurement pipeline, a qualified gas pipeline, an unqualified gas pipeline and an emptying pipeline, a throttling element is arranged on each of an inlet pipeline and an outlet pipeline of the adsorption tank and used for controlling the flow of gas when the adsorption tank is balanced, impact of high-speed gas on a molecular sieve is avoided, oxygen-enriched air can stay at the top of the adsorption tank in various balance modes, and desorbed low-concentration oxygen is adsorbed again to obtain the oxygen-enriched air. And the oxygen recovery rate is improved, so that the air consumption is reduced, the required power of an air compressor is reduced, and the energy consumption required by oxygen production is reduced.

The invention belongs to the field of flexible peak regulation and carbon reduction of thermal power generating units, and discloses a power station boiler oxygen-enriched hydrogen-ammonia-doped system and a working method thereof.The power station boiler oxygen-enriched hydrogen-ammonia-doped system comprises a boiler, and two combustors on the lower portion of the boiler are micro-hydrogen combustors; a combustion outlet of the micro-hydrogen combustor is connected with a lower hearth of the boiler, the hydrogen main gun is obliquely inserted into the inner side of a pulverized coal air chamber of the micro-hydrogen combustor, the hydrogen ignition gun is located in the middle of the pulverized coal air chamber of the micro-hydrogen combustor, and the hydrogen main gun and the hydrogen ignition gun are both connected with the hydrogen supply system. The boiler is provided with secondary air nozzles above and below each burner, the secondary air nozzle below the lowermost micro-hydrogen burner is arranged as a lower secondary air nozzle, the secondary air nozzle above the lowermost micro-hydrogen burner is arranged as an ammonia-doped secondary air nozzle, and the secondary air nozzle below the lowermost micro-hydrogen burner is arranged as an ammonia-doped secondary air nozzle. The secondary air nozzles above and below the uppermost micro-hydrogen burner are ammonia-doped secondary air nozzles, and ammonia gas inlets of the ammonia-doped secondary air nozzles are connected with an ammonia supply system. The problem of unstable combustion under low load can be solved by combining hydrogen-doped ammonia combustion and air oxygen-enriched combustion supporting.

The invention belongs to the technical field of heating furnaces, and particularly relates to an oxygen-enriched combustion system and method for a coal gas single heat storage type heating furnace. Comprising an oxygen pressure regulating branch, a first heating section oxygen lance oxygen injection branch and a main pipe oxygen enrichment branch, the oxygen pressure regulating branch is provided with a pressure transmitter and a temperature transmitter, an oxygen source is communicated with the pressure transmitter and the temperature transmitter through a pipeline, and oxygen flows into the first heating section oxygen lance oxygen injection branch and the main pipe oxygen enrichment branch after being subjected to pressure regulation through a pressure valve. A flow control valve is arranged on the first heating section oxygen lance oxygen injection branch, oxygen is fed into the heating furnace, and the main pipe oxygen enrichment branch feeds enriched oxygen into the main pipe through an enriched oxygen distributor. Flexible switching of different oxygen enrichment modes of the heating furnace is achieved, the burner in the oxygen lance oxygen injection branch of the first heating section is not reversed, total-oxygen combustion of the burner is achieved, under the oxygen enrichment branch of the main pipe, oxygen is conveyed to the main pipe through the oxygen enrichment distributor through the other branch to be mixed with combustion air, and total-furnace oxygen enrichment combustion is achieved.

The invention discloses SOEC modules and an SOEC water electrolysis hydrogen production device based on multiple reactor core modules. The SOEC water electrolysis hydrogen production device comprises a skid-mounted cabinet body, a steam generator, a mixer, an air electric heater and a plurality of SOEC modules, wherein the skid-mounted cabinet body is provided with a deionized ultrapure water inlet, a cathode protection hydrogen inlet, a cold air inlet, a product crude hydrogen outlet and an oxygen-enriched air outlet; the SOEC module comprises a thermal insulation shell and a plurality of electrolytic tank reactor cores; the thermal insulation shell is provided with a high-temperature air module inlet, a hydrogen-containing mixed steam module inlet, an oxygen-enriched air module outlet and a product crude hydrogen module outlet; the electrolytic tank core comprises a high-temperature air single-pile inlet, a hydrogen-containing mixed steam single-pile inlet, an oxygen-enriched air single-pile outlet and a product crude hydrogen single-pile outlet; the mixer is used for mixing cathode protection hydrogen and steam generated by the steam generator into hydrogen-containing mixed steam; the working environment temperature of the air electric heater can be effectively reduced, so that the fault probability of the electric heater is reduced; and further, the operation stability of the SOEC water electrolysis hydrogen production equipment is improved.

The invention relates to the technical field of energy conservation and environmental protection, and discloses a biomass oxygen-enriched combustion optimization and pollutant intelligent control system and method.The biomass oxygen-enriched combustion optimization and pollutant intelligent control system comprises a boiler temperature and pressure prediction system, a fuel prediction regulation and control system, a primary and secondary air prediction regulation and control system, a flue gas amount prediction system, a flue gas recirculation regulation and control system and a desulfurization and denitrification intelligent control system; the fuel prediction regulation and control system comprises a fuel identification module, a fuel heat value prediction module and a fuel demand prediction module; the primary and secondary air predictive regulation and control system comprises a primary air calculation module and a secondary air calculation module; the flue gas quantity prediction system comprises an induced draft fan control module and a flue gas prediction module; the flue gas recirculation regulation and control system comprises a recirculation quantity prediction module and a supplement quantity prediction module; the desulfurization and denitrification intelligent control system comprises a pollutant prediction module, a desulfurization agent prediction module and a denitrification agent prediction module. According to the invention, dynamic optimization and accurate control of the biomass boiler under the oxygen-enriched combustion condition can be realized.

The invention provides an energy system for synthesizing green methanol based on biomass gasification and oxygen-enriched combustion, and belongs to the technical field of new energy. The energy system comprises an electrolysis system, an oxygen-enriched combustion system, a methanol synthesis system, a biomass gasification system and an ammonia-process carbon capture unit, an oxygen outlet of the electrolysis system is communicated with the oxygen-enriched combustion system, and a hydrogen outlet of the electrolysis system is communicated with the methanol synthesis system; oxygen generated by the electrolysis system is supplied to the biomass oxygen-enriched combustion system for supporting combustion, and hydrogen is supplied to the methanol synthesis system; a hydrogen outlet of the biomass gasification system is communicated with the methanol synthesis system; a carbon dioxide outlet of the oxygen-enriched combustion system is communicated with the methanol synthesis system through the ammonia-process carbon capture unit; the material energy flow of the energy system is adjusted through hydrogen generated by the biomass gasification system, and the adjusting flexibility of the energy system is improved; the concentration of carbon dioxide output by the oxygen-enriched combustion system is concentrated through the ammonia-process carbon capture unit, and the pretreatment requirement of methanol synthesis is met.

The invention belongs to the technical field of energy conservation and environmental protection, and discloses a cement kiln system for coupling oxygen enrichment and staged combustion by using alternative fuel in a large proportion, which comprises a circulating fluidized bed system, a decomposing furnace, a rotary kiln and a grate cooler, the kiln tail of the rotary kiln is connected with the bottom of the decomposing furnace, a bottom gasified gas spraying pipe is arranged between a kiln tail smoke chamber of the cement kiln and a coal spraying pipe of the conical part, and an upper gasified gas spraying pipe is arranged on the upper portion of the middle section of the decomposing furnace; the bottom gasified gas spray pipe and the upper gasified gas spray pipe are both connected to a gasified gas outlet of the circulating fluidized bed system; and a semi-gasified gas spray pipe is arranged at the upper part of the lower section of the decomposing furnace and is connected to a semi-gasified gas outlet of the circulating fluidized bed system. The disposal amount of the alternative fuel can replace 50% of pulverized coal in the decomposing furnace, and the requirement for using the alternative fuel in a large proportion is met.

The invention discloses a local space oxygen enrichment control system and method based on an oxygen selective permeable membrane, belongs to the technical field of air purification, environment control and membrane separation, and aims to solve the problems that the indoor oxygen concentration cannot be actively and efficiently increased and compact integration is difficult in the prior art. The system integrates an outdoor fresh air fan, a switching valve, an oxygen enrichment membrane device, an air pump, an indoor air return and supply fan, a gas monitoring control unit, an outdoor exhaust fan and the like, and a control unit dynamically regulates and controls a switching valve passage, the rotating speed of each fan and start and stop of the air pump according to the difference between oxygen sensor data and preset target oxygen concentration; air selectively passes through the oxygen-enriched membrane device to generate oxygen-enriched air or is fed into a room through a bypass air path, and the indoor oxygen concentration is actively stabilized at 21%-26%. The system is suitable for local spaces such as residences and offices, active oxygen enrichment and environment control can be achieved, the air quality is improved, and meanwhile low energy consumption, safety and comfort are taken into account.

The embodiment of the invention provides a flue gas circulation hydrogen-doped combustion peak regulation and combustion stabilization system. The flue gas circulation hydrogen-doped combustion peak regulation and combustion stabilization system comprises a boiler, a water electrolysis device, a flue gas-hydrogen mixer and a flue gas-hydrogen combustor. The boiler is provided with a burner, and the flue gas-hydrogen burner is arranged on the lowermost layer of the boiler; the water electrolysis device is powered by the power supply device, an anode outlet of the water electrolysis device is communicated with a combustion improver inlet of the combustor, and a cathode outlet of the water electrolysis device is communicated with a hydrogen inlet of the flue gas-hydrogen mixer; a flue gas outlet of the boiler is respectively communicated with an inlet of the chimney and a flue gas inlet of the flue gas-hydrogen mixer; and a mixing outlet of the flue gas-hydrogen mixer is communicated with an inlet of the flue gas-hydrogen burner. According to the system, through hydrogen-doped combustion and oxygen-enriched combustion, boiler combustion is stable and safe during deep peak regulation of a unit, coal consumption is reduced, and cost is saved.

The embodiment of the invention discloses a fly ash coal oxygen-enriched melting intelligent control method based on multi-mode coupling prediction, and belongs to the technical field of solid waste recycling and intelligent control crossing. The method comprises the steps that S101, multi-source data collected by a sensor is obtained; step S102, obtaining control parameters through an intelligent control algorithm according to the multi-source data; s103, according to the control parameters, controlling an oxygen-enriched spray gun, a slurry outlet and a material ratio; wherein the step S102 comprises the sub-steps of performing decoupling prediction on the temperature T, the hearth negative pressure P, the flue gas oxygen concentration CO and the molten slurry yield Qp by adopting a multivariable decoupling prediction model; carrying out fuzzy control on the hearth negative pressure P by adopting a fuzzy self-adaptive PID (Proportion Integration Differentiation) controller; and a multi-objective optimization algorithm is adopted to calculate and obtain control parameters. The control method is small in melting temperature fluctuation, high in hearth negative pressure stability, high in quartz sand utilization rate, low in energy consumption per ton of molten slurry and high in heat preservation cotton qualification rate.

The invention provides a method for recovering copper and diluting matte converting slag through self-heating collaborative smelting, and relates to the field of metal recovery. The method comprises the steps that liquid copper matte converting slag generated in the copper smelting process is directly discharged into a hot-state collaborative smelting furnace, multi-source copper-based solid waste subjected to coarse crushing and mixing is added, collaborative smelting is carried out under the oxygen-enriched air condition, and collaborative smelting comprises the melting period, the dilution period and the standing period; in the melting period, copper, aluminum, iron, lead and tin in the copper-based solid waste are quickly melted to form first crude copper; in the depletion period, aluminum and iron in the first crude copper and organic matter in the copper-based solid waste serve as reducing agents to reduce oxides of copper, nickel, cobalt, zinc and lead in the matte converting slag into metal states, the metal states enter the first crude copper to form second crude copper, and after being oxidized, the iron and the aluminum enter the matte converting slag to form second slag; and in the standing period, a reducing agent is added, air blowing is ended, third crude copper and third slag are formed after standing, and a crude copper product is collected.

The utility model relates to the technical field of medical oxygen generators, and discloses a high-efficiency energy-saving PSA oxygen generator which comprises an adsorption tank, a gas inlet pipeline, a nitrogen discharge pipeline, an I-shaped balance pipeline, a first purging pipeline, a second purging pipeline, an oxygen outlet pipeline, a purity measurement pipeline, a qualified gas pipeline, an unqualified gas pipeline and an emptying pipeline, a throttling element is arranged on each of an inlet pipeline and an outlet pipeline of the adsorption tank and used for controlling the flow of gas when the adsorption tank is balanced, impact of high-speed gas on a molecular sieve is avoided, oxygen-enriched air can stay at the top of the adsorption tank in various balance modes, and desorbed low-concentration oxygen is adsorbed again to obtain the oxygen-enriched air. And the oxygen recovery rate is improved, so that the air consumption is reduced, the required power of an air compressor is reduced, and the energy consumption required by oxygen production is reduced.

The invention relates to a wind-light-fire-storage coupled water electrolysis hydrogen production comprehensive energy system. The system comprises a wind-light power generation unit, a thermal power generation unit, an energy storage unit, a mixed hydrogen production unit, an air separation unit, an ammonia gas synthesis unit, a flue gas carbon capture unit, a methanol synthesis unit, an oxygen-enriched combustion unit and an ammonia-doped combustion unit. According to the wind-light-fire-storage coupled water electrolysis hydrogen production comprehensive energy system, wind-light-fire-storage integrated cooperative operation is achieved, hydrogen production, ammonia production and alcohol production processes are combined, peak regulation, frequency modulation and voltage regulation are facilitated, and the stability and safety of a power system are guaranteed. Power generation through renewable energy sources such as wind and light is combined with hydrogen production through water electrolysis, green hydrogen with economic cost can be produced, excessive wind and light resources are consumed, and the phenomenon of wind and light abandoning is reduced. The hybrid hydrogen production technology can effectively solve the problems of intermittency and volatility of wind and light and coupling between hydrogen production equipment, realizes flexible hydrogen production, improves the wind-light-electricity absorption efficiency, and enhances the overall stability of the system.

An ultra-low load combustion device adapted to tangentially fired boilers, which relates to the technical field of combustion boilers, specifically an ultra-low load combustion device adapted to tangentially fired boilers. The present invention protects the ultra-low load combustion device: adding a layer of low-capacity pulverized coal burners above the original top-layer primary air burners, and adding a layer of secondary air nozzles above the low-capacity pulverized coal burners; adding a small-capacity pulverized coal feeding device, and the small-capacity pulverized coal feeding device is connected to the low-capacity pulverized coal burners - and other 5 kinds of tangentially fired boiler retrofit structures. The ultra-low load combustion device of the present invention can achieve long-term stable operation of the boiler at 15% of the rated load and below without any auxiliary combustion aids such as oil, gas, plasma, and oxygen enrichment.

The invention belongs to the technical field of deep sea manganese nodule treatment, and particularly relates to a method for microwave treatment of manganese nodules. When manganese nodules are treated in the prior art, the defects that an additional reducing agent needs to be added, a large amount of by-product gas polluting the environment exists in products, the reaction rate is low, the treatment time is long, energy consumption is high, pollution is large, and the separation efficiency of gangue components in minerals is low exist. In order to solve the problems, the method for microwave treatment of the manganese nodule comprises the following steps of microwave preheating activation, ore grinding premixing, microwave reduction acid leaching, sulfuration precipitation, microwave sulfuration smelting, oxygen-enriched blowing, microwave roasting oxygen pressure leaching, multi-stage extraction and microwave treatment. And the structure of the manganese-containing aggregate in the raw ore is destroyed, and gas-phase components in the raw ore overflow, so that the leaching rate and the recovery rate of valuable metals are greatly improved.

The invention provides a process method and system for directly capturing carbon dioxide from air and converting and utilizing the carbon dioxide. The process method comprises the following steps: adsorbing raw material gas through a carbon dioxide trapping device, and heating and desorbing to obtain purified carbon dioxide gas; the purified carbon dioxide gas and the electrolyte are subjected to electrocatalytic conversion to obtain synthesis gas, oxygen and condensate water, and the condensate water is recycled through water treatment operation to be used for supplementing the electrolyte; the method comprises the following steps: carrying out Fischer-Tropsch synthesis reaction, hydrocracking and isomerization reaction on synthesis gas to obtain an isomerized oil-gas mixture, wherein heat energy generated by the reaction provides heating desorption heat; and carrying out gas-liquid separation on the heterogeneous oil-gas mixture to obtain combustible gas and an upgraded oil product, carrying out rectification operation on the upgraded oil product to obtain an SAF component and a heavy oil product, and carrying out oxygen-enriched combustion reaction on the combustible gas and oxygen to provide heating desorption heat or supply required heat energy. An integrated and flexible industrial technology platform is developed, carbon capture and conversion processes are seamlessly connected, full-chain optimization from CO2 removal to high-added-value product generation is realized, and self heat energy requirements and wastewater utilization can be met.

The invention discloses a high-temperature turbulent environment particle ignition combustion testing device based on rotational flow flame stabilization, and belongs to the field of combustion testing. The burner is composed of an external rotational flow flame stabilizing device, a central premixing burner, an adjustable turbulence intensity pore plate and a central powder supply pipe. High-temperature and high-speed methane turbulence flames are generated through the central premixing burner, flame stabilization is conducted on the high-temperature and high-speed turbulence flames through the external rotational flow flame stabilization device, and the turbulence intensity of the flames is improved. A high-speed turbulent flow field and a high-temperature flue gas range are constructed through high-temperature and high-speed methane flames, combustion of aluminum particles in the turbulent flow field is achieved, and the combustion rule of the aluminum particles in a complex flow field is researched and tested. The turbulence intensity of high-temperature and high-speed turbulence flame is changed by changing the pore density and the pore diameter of the adjustable turbulence intensity pore plate, and the gas ratio in the central premixing combustor, so that simulation of different fuel gas oxygen enrichment degrees, turbulence intensities and flame temperatures is realized, and test analysis of different turbulence intensities on the combustion process of condensed phase particles is realized.

The invention discloses a low-carbon collaborative smelting method for an antimony-containing material, which adopts a technical route of oxygen-enriched side-blown smelting, oxygen-enriched side-blown reduction and top-blown oxidative volatilization to treat a mixed material of antimony concentrate and high-antimony anode slime, and adopts a mode of mixed blowing of a powdery raw material and oxygen-enriched air to prepare the low-carbon collaborative smelting method for the antimony-containing material. Compared with the prior art, reaction kinetic conditions of materials and oxygen when the materials are fed into the furnace are enhanced, advanced volatilization of sulfides and generation of antimony matte are effectively restrained, chemical reaction heat is fully absorbed by melt, heat excess in the smelting process is achieved, high-proportion antimony-containing secondary materials can be treated through the part of heat, and multi-material synergistic self-heating smelting is achieved. And meanwhile, Au and Ag are collected through crude antimony metal generated through reduction, high-quality antimony bletilla and high-concentration precious metal alloy can be produced through volatilization blowing, and short-process recovery of precious metal elements is achieved. The method is a brand-new technical route for widening the application range of raw materials, reducing cost and improving efficiency in antimony smelting plants.

The invention provides an electro / thermochemical gradient hydrogen production system and method for solar radiation energy grading and residual light energy thermal complementary coupling. The system comprises a light condensation assembly; the frequency division assembly is used for grading solar spectrum radiation; a photovoltaic cell power generation device; the methane oxygen-enriched combustion high-temperature photovoltaic power generation device is used for realizing oxygen-enriched combustion of natural gas by utilizing residual heat heat energy and generating power by utilizing radiation energy generated by high-temperature flue gas generated after combustion; the solid oxide electrolytic tank device is used for pushing solid oxide to electrolyze water to produce hydrogen by utilizing heat energy and electric energy contained in the high-temperature flue gas step by step; and the thermal chemical reaction device is used for promoting each step of thermal chemical reaction by utilizing heat energy and electric energy contained in the high-temperature flue gas step by step. The energy source of the system is solar radiation and natural gas, hydrogen and electricity are produced, the system utilizes different energy conversion modes to achieve temperature gradient ordered conversion and utilization of residual light energy after solar frequency division, and complementary coupling of different qualities is achieved on the basis of energy gradient conversion.

The invention belongs to the field of fossil energy combustion and energy conservation and emission reduction, and relates to a fossil energy combustion pollutant resource utilization and zero emission system which comprises an air separation device, an oxygen-enriched combustion system, a dust removal device, a desulfurization device, a water treatment device and a CO2 recovery device. According to the scheme provided by the invention, inhalable particles and nitrogen oxides generated by fossil energy combustion can be greatly reduced, carbon dioxide and sulfides generated by fossil energy combustion are comprehensively recycled, and zero emission of combustion pollutants is realized.

A system for oxygen-enriched combustion and fly ash melting of stale garbage includes a garbage incineration system, a fly ash melting system and a liquid oxygen gasification system. The garbage incineration system includes a feed hopper, an incinerator, a waste heat boiler, a flue gas purification system, a bag filter, an induced draft fan, a chimney and a fly ash conveying system. The fly ash melting system includes a fly ash melting furnace, a glass collection system, a secondary combustion chamber and a quenching tower. The liquid oxygen gasification system includes a liquid oxygen storage tank and an air-temperature vaporizer. The liquefied oxygen is divided into two routes, one for supplying the grate combustion section of the garbage incineration system and the other for supplying the fly ash melting system. On the one hand, the new type adopts oxygen-enriched combustion technology to effectively increase the furnace temperature of the incinerator; on the other hand, the fly ash generated by garbage incineration enters the fly ash melting furnace, and oxygen-enriched combustion is used to increase the flame temperature. The fly ash does not need to be transported outside, and can be disposed of in an integrated manner in the garbage incineration power plant, which can realize the resource utilization and harmless disposal of stale garbage and fly ash generated by incineration, and has energy saving and consumption reduction.

The present application belongs to the field of energy utilization technology, and in particular, relates to a carbon emission reduction device for producing hydrogen from natural gas. Existing devices need to capture, utilize / seal the carbon dioxide in the tail gas. The present application provides a carbon emission reduction device for producing hydrogen from natural gas, including a water electrolysis module, a natural gas reforming module, a tail gas treatment module, a water treatment module and a power supply module connected in sequence, the water treatment module is connected to the natural gas reforming module, the water treatment module is connected to the water electrolysis module, the power supply module is connected to the natural gas reforming module, the power supply module is connected to the water electrolysis module, and the power supply module is connected to the tail gas treatment module. Oxygen-enriched combustion technology makes the carbon dioxide concentration in the tail gas higher, which is convenient for the subsequent low-cost capture, utilization or storage of carbon dioxide, making hydrogen production from fossil energy more environmentally friendly.

The present invention relates to the technical field of water treatment, and provides a system for water quality purification for factory farming of penaeus vannamei, which comprises a treatment tank (100), a bearing platform (200) and a cultivation tank (400), wherein the treatment tank (100) is fixed onto the bearing platform (200), and the cultivation tank (400) is fixed onto the bearing platform (200); a separation plate (101) is fixed in the treatment tank (100), a first water through hole (102) is formed in the separation plate (101), and the separation plate (101) divides the treatment tank (100) into an overflow area (103) and a purification and oxygen enrichment area (104), the purification and oxygen enrichment area (104) being in communication with a pipeline at the bottom of the cultivation tank (400); and a flow-dividing assembly (110) is fixed in the overflow area (103), a desilting assembly (120) is fixed to the bottom of the overflow area (103), a filter assembly (130) is fixed in the purification and oxygen enrichment area (104), the filter assembly (130) comprises a filter box (131), and a disinfection box (150) is fixed onto a side wall of the treatment tank (100). Thus, disinfectant and water can be fully mixed, improving the disinfection and purification effect, and in turn the stress on the penaeus vannamei is reduced, thereby reducing the death rate thereof.

The invention discloses a micro-pressure oxygen-enriched cabin adjusting device, a micro-pressure oxygen-enriched cabin control method and a micro-pressure oxygen-enriched cabin control system. The device is characterized by comprising a high-pressure gas conveying branch, a mixing chamber, an air supply temperature adjusting branch, a sealed cabin and a circulating pump, the first end of the mixing chamber communicates with the high-pressure gas conveying branch, and the second end of the mixing chamber communicates with the air supply temperature adjusting branch. The third end of the mixing chamber is communicated with the circulating passage of the sealed cabin; the first end of the sealed cabin communicates with the air supply temperature adjusting branch, and the second end of the sealed cabin communicates with the circulation path. The circulating pump is arranged on the circulating passage; the high-pressure gas conveying branch is used for conveying the pressurized air to the mixing chamber; the mixing chamber is used for mixing the air of the high-pressure gas conveying branch with the air output by the sealed cabin and then outputting the mixed air; the air supply temperature adjusting branch is used for adjusting the temperature of mixed gas obtained in the mixing chamber and then conveying the mixed gas to the sealed cabin. Compared with an independent air-conditioning device arranged in the sealed cabin, coupling control of pressurization and temperature is achieved, and the system is more energy-saving and efficient.

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).

To early start an ammonia engine.SOLUTION: An ammonia engine system 10 includes: an ammonia engine 11; a first supply flow passage 12 for supplying air containing oxygen to the ammonia engine 11; a first regulating valve 15 provided in the first supply flow passage 12; a reformer 23; a second supply flow passage 24 for supplying ammonia to the reformer 23 together with the air containing oxygen; a second regulating valve 33 for regulating the amount of the air containing oxygen to be supplied to the second supply flow passage 24; a fuel injector 14 for supplying ammonia to the first supply flow passage 12; a third supply flow passage 31 for supplying hydrogen generated by the reformer 23 to the first supply flow passage 12; a first oxygen enrichment membrane 53 for supplying oxygen-enriched air having an increased oxygen concentration compared to air to the first supply flow passage 12; and a control section 37 that supplies ammonia from the fuel injector 14 to the first supply flow passage 12 and opens the first regulating valve 15 at start of the ammonia engine 11.SELECTED DRAWING: Figure 1