43results about How to "Achieve emission reduction" patented technology

The invention discloses a method for realizing carbon dioxide emission reduction in a catalyst regeneration process, regenerated flue gas is subjected to dust removal and pressure reduction to obtain low-pressure flue gas, the low-pressure flue gas is divided into a first flue gas material flow and a second flue gas material flow, the first flue gas material flow is subjected to heat exchange, denitration and desulfurization dust removal treatment to obtain desulfurized flue gas, and the desulfurized flue gas is subjected to heat exchange, denitration and desulfurization dust removal treatment to obtain a second flue gas material flow; water vapor in the desulfurized flue gas is removed to obtain low-humidity flue gas, part of the low-humidity flue gas serves as circulating flue gas to participate in catalyst regeneration, part of the low-humidity flue gas and hydrogen are subjected to a combustion reaction, deoxidized flue gas is obtained, and high-concentration carbon dioxide is obtained after the deoxidized flue gas is dehydrated; the second flue gas material flow is subjected to heat exchange with the circulating flue gas or is returned together with the circulating flue gas to participate in catalyst regeneration or is mixed with the first flue gas material flow in the denitration process, and heat exchange, desulfurization and dust removal are continued to obtain desulfurized flue gas. The method solves the problems of large total carbon dioxide emission, low carbon dioxide concentration and high trapping cost of a hydrocarbon processing device in the prior art.

The invention discloses a variable-working-condition IES optimal scheduling method considering a GCT-LTC joint mechanism and a PDR mechanism. The method comprises the steps that S1, a comprehensive energy system comprising power, heat and gas multi-energy complementation is constructed; s2, constructing a variable working condition equipment operation model in the integrated energy system; s3, on the basis of the equipment operation model, constructing a variable working condition IES optimization scheduling model considering a GCT-LTC joint mechanism and a PDR mechanism; and S4, solving the variable working condition IES optimal scheduling model by using a particle swarm algorithm to obtain an operation optimization parameter taking the lowest total operation cost as a target, and performing optimal scheduling of the integrated energy system according to the operation optimization parameter. According to the method, based on a green certificate-stepped carbon transaction joint mechanism, the corresponding optimal scheduling model considering the variable working condition characteristics and requirements of the IES is established with the lowest economic cost as the target, so that the effects of more effective energy conversion and reduced energy waste are achieved, economic operation of the IES is facilitated, and analysis on the overall operation scheduling condition of the IES is more accurate.

The invention discloses a method for preparing nano vaterite calcium carbonate from carbonized carbide slag. The method comprises the following steps: 1) pretreatment of raw materials: drying the carbide slag, and grinding the carbide slag into powder for later use; 2) leaching: mixing the carbide slag, ammonium chloride and deionized water, stirring at normal temperature, reacting, and filtering to obtain filter residue and calcium-containing filtrate; and 3) carbonization reaction: introducing the calcium-containing filtrate obtained in the step 2) into an external circulation supergravity reactor, introducing CO2 gas at the same time, carbonizing at normal temperature, and filtering, washing and drying to obtain the nano vaterite type calcium carbonate. The method aims at the problems that in an existing process for preparing vaterite calcium carbonate from carbide slag, product particle size distribution is large, production efficiency is low, and additives are needed, and nano vaterite type calcium carbonate with the small particle size (50-80 nm) and uniform distribution can be efficiently prepared.

According to the near transient response ammonia fuel supply system and method, a liquid ammonia tank provides fuel for an area where a liquid ammonia tank is located through liquid ammonia, and the fuel is distributed to a gasifier and a liquid ammonia supply branch after being controlled through a main electromagnetic valve; liquid ammonia passes through a gasifier and then is divided into three branches, the three branches enter a plasma processing unit through opening valves, enter an ammonia gas distributor through electromagnetic valves, then enter an ammonia gas cracker and enter a mixer through electromagnetic valves, and each plasma processor in the plasma processing unit is provided with an electromagnetic valve for independent control of ammonia gas processing. And the gas treated by the plasma passes through the catalyst bed, then enters the ammonia gas distributor to be mixed with the ammonia gas passing through the electromagnetic valve, then enters the ammonia gas cracker, then enters the mixer to be further mixed with the ammonia gas passing through the electromagnetic valve, and finally enters the fuel consumption end through the electromagnetic valve. The method has the advantages of zero carbon emission, high efficiency, easiness in expansion and the like.

The invention provides a combined nitrogen and phosphorus loss prevention and control method for corn-winter green manure rotation planting. Comprising the following steps: step 1, preparing soil in mid-to-late September, sowing winter green manure crops in drill, and applying a yeast substrate along with the seeds; step 2, crushing the upper part of the green manure ground in April of the next year, scattering the treated sesbania straw, and turning and pressing by a rotary cultivator; step 3, sowing the corn, and applying a nitrification inhibitor along with the seeds; step 4, applying slow-release urea while intertilling the corn in a large horn mouth period of the corn; and 5, repeating the operations from the step 1 to the step 4 every year. According to the invention, the fertilizer is saved by more than 50%, the nutrient volatilization and leaching loss is reduced by 50-85%, the fertilizer utilization rate is improved by more than 30%, the cost is saved by 100-200 yuan per mu, the soil fertility is obviously improved, the soil nitrogen and phosphorus accumulation is obviously reduced, the non-point source pollution risk is obviously reduced, the biological coverage in winter and spring is obviously increased, and the beautiful tourism scene is provided.

The present invention belongs to the technical field of admixtures for tunnel engineering support concrete, and in particular discloses an early high-strength hydrophobic anti-corrosion admixture for tunnel engineering support concrete and a preparation method thereof, as well as the application of the early high-strength hydrophobic anti-corrosion admixture in tunnel support shotcrete. The early high-strength hydrophobic anti-corrosion admixture, by reasonably matching high-activity admixtures, medium-low activity admixtures, hydrophobic components, early strength components, expansion components, collapse-preserving components, slow-setting components, and crack-limiting components, when applied to tunnel support shotcrete, can improve the overall strength and impermeability of the primary support concrete, and significantly reduce the calcium dissolution rate of the matrix, so as to significantly inhibit the reduction of the dissolution strength of the primary support concrete, and at the same time prolong the blocking time of the drainage system, so as to ensure the long-term safe service of the tunnel structure.

The present invention relates to the technical field of production intelligent control, and discloses a control system and method for an intelligent manufacturing production line of a non-woven breathable film, comprising collecting material attribute data of a breathable film production line, and constructing a digital twin model of a breathable film production process; collecting visual appearance images and near-infrared spectrum data of waste scraps in a sorting area of ​​the production line in real time; dividing the waste scraps into Class A scraps, Class B scraps, and Class C scraps according to preset grading judgment standards, and constructing a waste scrap grading decision model; replacing part of the raw materials with Class A scraps, physically regenerating Class B waste, and biodegrading Class C waste; based on the digital twin model, integrating Class A and Class B waste recovery data, constructing a multi-objective optimization model for the breathable film production line, and solving to obtain the production control target.

The invention belongs to the technical field of wastewater and waste gas treatment, and discloses a method and a device for resource preparation of a sulfur autotrophic denitrification filler, and a nitrate-nitrogen-containing wastewater treatment method, the method comprises the following steps: S1, coal gas purification: preparing red mud slag into red mud slurry, and inputting the red mud slurry into a desulfurization and decarbonization unit to desulfurize and decarbonize coal gas; s2, material separation: carrying out solid-liquid separation on the used red mud slurry, drying the obtained solid, enabling the liquid to enter a freezing crystallization unit to obtain a crystallized solid phase and a concentrated liquid phase, and mixing the concentrated liquid phase with the used red mud slurry; and S3, filler preparation: preparing the dried solid into a carrier, and then mixing and loading the carrier with the crystallized solid phase to prepare the sulfur autotrophic denitrification filler. According to the method, resource utilization of hazardous waste can be achieved, the wastewater treatment cost is reduced, and the obtained filler can stably treat wastewater.

This invention provides a waste heat utilization device and process for the production of long-chain nylon resin. The waste heat utilization device includes a polymerization reactor, an evaporator, a steam manifold, and a hot water circulation system. The hot water circulation system includes a hot water storage tank and a hot water circulation pump. The polymerization reactor is connected to the inlet of the hot water storage tank via an exhaust pipe to the hot water storage tank and to the inlet of the evaporator via an exhaust pipe to the evaporator. The outlet of the evaporator is connected to the steam manifold via an inlet pipe. The steam manifold is connected to the steam user end via a steam pipeline to the steam network. The outlet of the hot water storage tank is connected to the hot water user end via the hot water circulation pump and a hot water pipeline. This invention uses the steam discharged during the polymerization process as a heat medium to heat deionized water to obtain saturated steam and hot water, which are then supplied to the factory's steam and hot water users. This fully utilizes the waste heat from the polymerization process, reduces the factory's steam consumption, and lowers production energy consumption.

The utility model discloses a toothed ring pickling device based on acid waste gas emission reduction, and relates to the technical field of toothed ring processing, the toothed ring pickling device comprises a treatment tank, a sealing cover and a spraying assembly, the inner side of the treatment tank is provided with a storage frame, and the side surface of the storage frame is provided with a lifting assembly; the lifting assembly comprises a driving motor, a rotating rod, a rotating rod, a rotating gear, a transmission chain wheel, a transmission chain, an electric push rod, a limiting roller and a limiting rod. According to the toothed ring pickling device based on the acid waste gas emission reduction, the lifting assembly and the spraying assembly are arranged, in the process that the pickling device is used for conducting pickling treatment on a toothed ring during toothed ring machining, the acid waste gas generated during toothed ring workpiece pickling is conveniently collected, and follow-up centralized treatment on the acid waste gas is facilitated; and meanwhile, the alkaline solution and the acid waste gas are subjected to neutralization reaction, so that air pollution caused by direct discharge of untreated acid waste gas is avoided, and workers can conveniently use the gear ring pickling device.

This invention relates to the field of flue gas pollution control technology in coal-fired power plants, and discloses a method for total pollutant emission reduction in an environmental protection island based on morphological transformation and residual compensation. The method includes: acquiring real-time operating data of a smart environmental protection island in a coal-fired power plant, generating a time-series feature vector, and setting inlet boundary conditions; constructing a pollutant morphological transformation mechanism model for each environmental protection subsystem, inputting relevant data and inlet boundary conditions, and calculating the theoretical baseline concentration of pollutants; using an LSTM as an error-compensated prediction model, after training with historical data, inputting the current operating condition time-series feature vector to obtain the concentration prediction residual value, obtaining the deviation between the historical training conditions and the current operating conditions, calculating the confidence factor, and generating a mixed pollutant prediction concentration; finally, using ammonia injection flow rate and other factors as optimization variables, setting constraints, and constructing an objective function with the lowest total cost to obtain the optimal control parameter set, thereby achieving optimized control and pollutant emission reduction of the environmental protection subsystem. This invention significantly improves the pollutant emission reduction effect.

The invention provides an excrement storage gas emission reduction device, and belongs to the technical field of excrement treatment devices.The excrement storage gas emission reduction device comprises a storage tank and a photocatalysis device arranged on one side of the storage tank, a gas conveying pipe is installed on the inner wall of the side, close to the photocatalysis device, of the storage tank, and a feeding pipe is installed on the inner wall of the side, away from the gas conveying pipe, of the storage tank. According to the invention, greenhouse gas methane and irritant gas ammonia gas generated in the excrement storage process are catalyzed into nitrogen, carbon dioxide and water through photocatalysis, and the nitrogen, the carbon dioxide and the water are discharged, so that the emission of the greenhouse gas and the irritant gas is reduced, and the emission reduction of the gas in the excrement storage process is realized; the driving stirring rollers on the two side walls of the fixing frame rotate around the main shaft and rotate at the same time, the excrement in the storage tank is stirred, layering of the excrement in a static state is prevented, microorganisms and nutrient substances in the excrement are distributed more evenly, the microorganisms in the excrement can fully degrade and digest the nutrient substances, and the excrement is prevented from being decomposed and decomposed. Therefore, efficient cyclic utilization of resources is realized.

The present invention relates to an integrated device for hydrogen separation and water-gas reforming, comprising a reaction chamber, a hydrogen separation chamber and a water-gas reforming chamber arranged in the reaction chamber, a hydrogen absorption tube inserted in the hydrogen separation chamber, suitable for separating pure hydrogen; the water-gas reforming chamber is provided with a catalyst filler, and the water-gas reforming chamber is provided with a hydrogen mixed residual gas inlet; the hydrogen absorption tube absorbs hydrogen and separates the mixed gas in the hydrogen separation chamber, the separated pure hydrogen is output from the pure hydrogen outlet of the hydrogen absorption tube, and the separated carbon dioxide mixed residual gas is output from the carbon dioxide mixed residual gas outlet. The hydrogen separation chamber and the water-gas reforming chamber are integrated in the same reaction chamber, so that the operating temperatures of hydrogen separation and water-gas reforming are controlled in the same range, water-gas reforming and hydrogen separation are integrated, and the layout structure of the entire hydrogen production system is optimized.

The application discloses a workshop constant temperature and humidity control method and system based on ultrasonic cold atomization, and belongs to the technical field of industrial environment control. In view of the defects of high energy consumption, heat interference, control lag and too tight coupling with a production system of a steam humidification mode in the prior art, the method comprises the following steps: obtaining real-time humidity of a workshop, and generating a standard industrial simulation control signal by an air conditioner main control unit; the signal is converted into a driving signal through an independently arranged signal conversion control module, and normal-temperature atomized water vapor output by an ultrasonic cold atomization humidification device is controlled, so that the original steam humidification device is completely replaced. The system also has a manual control mode and a state display function, and can realize decoupling of humidification and a boiler, so that the boiler is completely stopped when a production line is shut down. The application replaces fossil fuels with electric energy, saves energy and reduces cost, eliminates heat interference and improves temperature control accuracy, and can be seamlessly integrated without modifying the original PLC program, thereby supporting lean energy management.

The carbon dioxide conversion system comprises a first mixing chamber, an electrochemical reactor, a first conversion unit and a second conversion unit, the feeding end of the first mixing chamber is suitable for introducing a to-be-reacted object and water; the discharge end of the first mixing chamber is communicated with the feed end of the electrochemical reactor, and the electrochemical reactor is configured to perform a water half-splitting reaction on water to generate hydroxyl ions and hydrogen ions, and respectively react with a to-be-reacted object based on the generated hydroxyl ions and hydrogen ions to generate a first product and a second product; the feeding end of the first conversion unit is communicated with the first discharging end of the electrochemical reactor, and the first conversion unit is configured to convert a first product generated by the electrochemical reactor; the feeding end of the second conversion unit is communicated with the second discharging end of the electrochemical reactor, and the second conversion unit is configured to capture carbon dioxide by using a second product generated by the electrochemical reactor and convert the carbon dioxide into a third product.

The present invention belongs to the field of polyurethane hot melt adhesives, and relates to a carbon dioxide-based reactive polyurethane hot melt adhesive and a preparation method thereof. The carbon dioxide-based reactive polyurethane hot melt adhesive comprises the following components: 30-125 parts by weight of a modified carbon dioxide-based polycarbonate diol, 10-40 parts by weight of a polyol polymer, 5-35 parts by weight of a polyisocyanate, 5-10 parts by weight of a thermoplastic resin, and 0.1-2 parts by weight of a first catalyst. The present invention introduces a modified carbon dioxide-based polycarbonate diol having a six-membered ring and an amino side chain on the basis of a traditional reactive polyurethane hot melt adhesive, and this special structure can improve the bonding performance, heat and moisture resistance, and flexibility of the polyurethane hot melt adhesive, and the polyurethane hot melt adhesive has the advantages of being environmentally friendly, green, and low in cost, and is conducive to achieving carbon emission reduction, conforming to the concept of sustainable development, and conforming to economic and social benefits.

The invention discloses a power distribution network asset planning method and terminal, and the method comprises the steps: building a two-stage asset planning model of a power distribution network based on a carbon emission permit transaction mechanism and a demand response strategy, inputting collected operation data and geographic space data into the two-stage asset planning model, and solving the two-stage asset planning model, the optimal site, capacity and type of the capacitor bank, the distributed power generation device and the energy storage system are obtained, a carbon emission permit transaction mechanism and a demand response strategy are innovatively incorporated into an asset planning process, a power distribution company can participate in a carbon market through the carbon emission permit transaction mechanism, carbon emission is reduced, and the purpose of carbon emission reduction is achieved. The consumption behavior can be adjusted through the demand response, the power consumption is more efficient and environment-friendly, the carbon emission permit transaction and the demand response are incorporated into the asset planning process, the carbon dioxide emission is reduced to the maximum extent, and the development and utilization of clean energy are promoted.

A method and a reaction system for converting waste plastics into chemical raw materials belong to the field of petroleum chemical industry, comprising: after being crushed, the waste plastics are mixed with part of the circulating liquid hydrocarbon in the product, extruded into a microwave device through a feeder for pretreatment; entering a moving bed reaction-regeneration device, and contacting with a spherical catalyst with a low silicon aluminum ratio and containing phosphorus ZSM-5 zeolite on a silicon aluminum active carrier with a particle size of 1-5 mm, and performing thermal cracking-catalytic cracking reaction at 400-540 DEG C; the product enters a later process to separate ethylene, propylene, butene, aromatic hydrocarbon production raw materials and liquid hydrocarbon for circulation; the deactivated catalyst enters a regenerator for coking and then is recycled; the application improves the reaction rate and conversion efficiency of the waste plastic conversion process, the stability of material conveying and operation, produces high value-added products while eliminating white pollution, reduces oil and gas resource consumption and realizes carbon emission reduction, and has good economic and environmental benefits.

The utility model provides an energy-saving and emission-reducing type acid waste gas treatment system which realizes energy-saving and emission-reducing type acid waste gas treatment by arranging a collecting pipeline, an alkaline washing tower, a low-temperature evaporation system, a fan, an exhaust funnel, a circulating pump, a drainage pump, a make-up pump and a dosing system. According to the system, loss of an absorbent, emission of aerosol-state pollutants and emission of wastewater are reduced through low-temperature distillation, the water reutilization rate of the system is increased, and water saving and emission reduction, heat energy recovery and efficient operation of acid waste gas are achieved.

The present application relates to a kind of sintering method for reducing the CO content of sintering flue gas, by the reasonable cooperation of measures such as layer thickness, material distribution mode, flue gas reuse composite oxygen-enriched sintering and flue gas carbon monoxide catalytic oxidation in each step, the content of carbon monoxide in the emission flue gas is greatly reduced, so that the environmental friendliness of flue gas emission is greatly improved.

The present invention provides a method and system for capturing and utilizing carbon dioxide. The method for capturing and utilizing carbon dioxide comprises: capturing carbon dioxide in a target component using an alkaline solution to obtain a carbonate-containing aqueous solution; electrolytically reducing the carbonate-containing aqueous solution to obtain a hydroxide aqueous solution, carbon dioxide electrolysis gas, oxygen and hydrogen, and adjusting the output ratio of carbon dioxide electrolysis gas and hydrogen by controlling the concentration of the carbonate-containing aqueous solution and the electrolysis voltage of the electrolytic reduction process; optionally catalytically reacting the carbon dioxide electrolysis gas and hydrogen to obtain hydrocarbons, which can be used as industrial by-products. The method for capturing and utilizing carbon dioxide provided by the present application can achieve carbon dioxide emission reduction, optionally solve the problem of transportation and utilization of carbon dioxide and hydrogen, and also obtain process by-products, so that the process has a lower investment cost and is convenient for industrial application.

The invention discloses a distribution type kitchen fuel replacement system and method. The distribution type kitchen fuel replacement system comprises a liquid ammonia tank, a main electromagnetic valve, an electromagnetic valve, a plasma generation device, a combustion head, an air blower, a deeply-buried cooking range, a suction ventilator, a tail gas NOx centralized treatment device and the like. The liquid ammonia tank provides fuel for the area where the liquid ammonia tank is located through liquid ammonia, the fuel is distributed to the terminal users after being controlled through the main electromagnetic valve, an electromagnetic valve is installed in each terminal user for user side use control, and the fuel passes through the plasma after being controlled through the electromagnetic valves and then enters the combustion head to be subjected to combustion reaction with air generated by the air blower. High-temperature flue gas generated by fuel combustion directly heats kitchen ware in the deep-buried cooking range, the food processing function is achieved, and the high-temperature flue gas is taken away by the suction fan after heating the kitchen ware and enters the tail gas NOx centralized processing device. The system has the advantages of zero carbon emission, high efficiency, easy expansion and the like, and is suitable for application scenes such as residential areas and restaurants.

The invention relates to the technical field of management and control platforms, in particular to an implementation method and system of a digital and intelligent open management and control platform of a kebab machine. The method comprises the following steps of initial parameter setting, baking position automatic matching, data exchange and control, data storage and statistics, safety management and open interface management. The system comprises a hardware part and a software management and control platform, the hardware part comprises a mechanical device, a digital roasting stick, a data reading module, a data interaction module and a data processing and control module, and the software management and control platform comprises a parameter setting function module, a data interaction function module, a reminding control function module, a safety management function module and an interface management function module. According to the modified digital skewer and skewer machine, under the specific management and control method, pollution of baking to the environment is eliminated, time and labor are saved, energy conservation, consumption reduction and emission reduction are achieved, more convenience is provided for a user by opening an interface, and a foundation is laid for large-scale commercial use of multiple sets of equipment and artificial intelligence large model training.

The invention discloses a split-flow step-by-step coagulation device and a digital intelligent coagulation control method thereof, and belongs to the field of water treatment.The split-flow step-by-step coagulation device comprises an upper mixing chamber and a lower mixing chamber which are communicated through a guide cylinder, the upper mixing chamber is communicated with a split-flow pipe through a mixing pipe, the split-flow pipe is communicated with a water inlet pipe, and one side of the lower mixing chamber is communicated with the water inlet pipe through a Venturi pipe; the other side of the lower mixing chamber is communicated with a water outlet pipe; the Venturi tube is provided with a shunt regulating valve, the shunt tube is provided with a flow velocity tester, the mixing tube is provided with a dosing tube, the upper mixing chamber and the guide cylinder are internally provided with a stirring impeller and a thrust impeller respectively, the lower mixing chamber is internally provided with a guide tube communicated with the guide cylinder, and the water outlet tube is provided with a flowing current sensor; according to the scheme, the hydraulic condition required by the optimal mixing effect is ensured, dynamic parameter adjustment is controlled through digital intelligent coagulation, GT optimized operation also ensures that the effluent turbidity of the sedimentation tank is stabilized below 1ntu for a long time, and the purposes of improving quality and efficiency, saving water and reducing emission, saving energy and reducing consumption are achieved.

The invention relates to a low-temperature flue gas purification system which comprises a heat exchanger, a flue gas heating device and a reactor, a flue gas outlet in the raw flue gas side of the heat exchanger is connected with a flue gas inlet of the flue gas heating device, and a flue gas outlet of the flue gas heating device is connected with a flue gas inlet of the reactor through a reactor inlet flue. The flue gas outlet of the flue gas heating device is further connected with a flue gas inlet of the clean flue gas side of the heat exchanger through a bypass flue, the flue gas outlet of the reactor is connected with the flue gas inlet of the clean flue gas side of the heat exchanger, and the flue gas outlet of the clean flue gas side of the heat exchanger is used for discharging clean flue gas outwards. The flue gas outlet of the clean flue gas side of the heat exchanger is further connected with the flue gas inlet of the original flue gas side of the heat exchanger through the circulating flue, the reactor inlet flue, the bypass flue and the circulating flue are all provided with windshields, and the influence of liquid water and high-concentration sulfur oxide in low-temperature flue gas on a catalyst can be avoided through the bypass flue and the circulating flue.

The invention discloses a resin regeneration end point confirmation method of a condensate polishing system, and the resin regeneration system used for condensate polishing comprises a negative regeneration tower and a positive regeneration tower, and an outlet alkali concentration meter and an inlet alkali concentration meter are arranged on the upper portion and the lower portion of the negative regeneration tower respectively. An outlet acid concentration meter and an inlet acid concentration meter are arranged on the upper portion and the lower portion of the positive regeneration tower respectively, and when the deviation between the real-time outlet alkali concentration and the real-time outlet alkali concentration is within + / -2%, it is judged that negative regeneration reaches the end point; when the deviation between the real-time outlet acid concentration and the real-time outlet acid concentration is within + / -2%, it is judged that positive regeneration reaches the end point; when the method is used for regenerating the resin, the terminal point of the resin regeneration can be determined based on the actual production condition, so that the time for feeding acid and alkali is controlled, and compared with a traditional method for fixing the using amount of the regenerant, the method has the advantages that the time for feeding acid and alkali can be shortened, the acid and alkali consumption is reduced, the using amount of demineralized water is reduced, the wastewater discharge amount is reduced, and wastewater emission reduction is realized.

The present invention provides a metal-free catalyst for acetylene hydrochlorination reaction, and a preparation method and application thereof, which belongs to the technical field of catalyst preparation. The catalyst is a composite carbon-based catalyst of porous carbon-nitrogen-coated silicon oxide. The preparation method of the catalyst is as follows: magnesium powder and silicon-containing oxide are fully mixed and placed in a tubular furnace, the tubular furnace is heated to a specified temperature under an inert gas, and then a mixture of carbon dioxide and nitrogen is introduced for reaction, and after a certain period of time, the inert gas is switched and the temperature is lowered to obtain a black powder; the black powder is soaked in an acidic solution, and then washed with deionized water to neutrality, and then dried to obtain the metal-free catalyst. The metal-free catalyst of the present invention has a high specific surface area, rich pore structure and strong mechanical strength, and uses carbon dioxide as a carbon source, thereby achieving carbon emission reduction and high-value utilization of carbon dioxide.

An abatement apparatus for treating an exhaust gas stream from a manufacturing treatment tool is provided. The abatement apparatus includes: a process chamber at least partially defined by a first porous wall and including an inlet configured to enable an exhaust stream from the manufacturing process tool to enter the process chamber; a second porous wall substantially surrounding the first porous wall and defining therebetween a second chamber, the second chamber being porous to allow a flow of gas therethrough; one or more heating elements disposed within the second chamber and configured to heat gas flowing through the second chamber during use; a third porous wall substantially surrounding the second chamber and defining therebetween a third chamber comprising a relatively insulating material, the third chamber being porous to allow gas flow; and a gas inlet. Wherein the apparatus is configured such that, in use, a gas stream is delivered from the gas inlet through the third chamber and the second chamber to the process chamber, where the gas stream reacts with the exhaust gas stream.

The application relates to the technical field of energy storage, and discloses a thermal-chemical storage coupling oxygen-enriched combustion utilization system and method for waste heat of a thermal power plant, wherein a heat energy output end of high-temperature flue gas or steam bypass of the thermal power plant is connected to a heat energy input end of a thermal-chemical energy storage and release reaction unit, necessary heat energy is provided for an energy storage reactor, heat carried by flue gas of the thermal power plant and heat carried by steam which is easily wasted during low-load operation are fully utilized, the utilization efficiency of heat energy of the thermal power plant is improved, energy waste is reduced or avoided, the thermal-chemical energy storage and release reaction unit and an energy storage reaction material storage container are sequentially and circularly connected to form a loop, a thermal-chemical reaction product can be simply regenerated through an oxidation reaction, heat is released and recycled, and the waste heat of the thermal power plant is effectively stored and utilized, energy consumption is reduced, and energy is saved.

The invention relates to a sodium-free alkali micro-residue mercaptan removal method for liquefied petroleum gas refining, which is used for removing organic sulfides in liquefied petroleum gas. The method comprises the following steps: reacting mercaptan with a desulfurizing agent to form mercaptide, dissolving the mercaptide in the desulfurizing agent, and extracting and removing the mercaptan from the liquefied gas. According to the sulfur-containing desulfurizer, sulfide is oxidized to form disulfide in the presence of a catalyst, and then reverse extraction is performed, so that the desulfurizer is regenerated. According to the invention, while deep desulfurization of liquefied gas is realized, since a sodium-free alkali desulfurizer technology is adopted, almost no alkali residue is discharged in the use process, consumption of alkali liquor is reduced, alkali consumption and residue discharge are reduced to one twentieth of the original residue discharge amount, and the method has remarkable energy-saving and emission-reducing effects and very considerable economic benefits and social and environmental protection benefits.