33results about How to "Reduce direct emissions" patented technology

The utility model relates to the technical field of silicon steel production, and particularly discloses an alkali wash liquor heating device for heating by using annealing tail gas, which comprises a tail gas collecting pipeline, a heating device, a heating device and a heating device, and is characterized in that one end of the tail gas collecting pipeline is communicated with a waste gas exhaust pipeline of a continuous decarburization annealing furnace; the combustion assembly is connected with the other end of the tail gas collecting pipeline and used for combusting tail gas; the high-temperature end of the first heat exchanger is connected with the output end of the combustion assembly; a liquid heat transfer medium flowing circularly is arranged in the fluid circulation assembly, the fluid circulation assembly is provided with a first heat exchange section and a second heat exchange section, and the first heat exchange section is configured to be the low-temperature end of the first heat exchanger; the second heat exchange section is configured as a high-temperature end of the second heat exchanger; the alkali wash solution supply assembly is connected with the low-temperature end of the second heat exchanger; the device can effectively recover the heat released by the combustion of the atmosphere in the furnace at the outlet of the smoke exhaust pipeline at the decarburization annealing stage, and is used for heating the alkali wash liquor in the previous alkali wash process, thereby reducing the energy consumption of heating the alkali wash liquor, reducing the direct emission of the tail gas heat and greatly improving the energy utilization efficiency.

The application provides a road wrecker, which comprises a vehicle body, a fire extinguishing cover arranged on the vehicle body, a bottom end of the fire extinguishing cover being open and capable of being buckled on a road surface to form a closed space for accommodating a failure vehicle in the fire extinguishing cover, the closed space comprising a parking chamber and a cleaning chamber distributed upward and downward, a heat exchange assembly arranged on the fire extinguishing cover, a lifting mechanism for lifting the failure vehicle into the parking chamber, an isolation mechanism for isolating the parking chamber from the cleaning chamber, a cleaning mechanism for cleaning the ground buckled by the fire extinguishing cover, and a water storage assembly arranged on the vehicle body. The application can effectively reduce the risk of fire spreading, effectively prevent the flame and heat from spreading to surrounding vehicles or combustible materials, and significantly reduce the direct emission of toxic gas and smoke generated by battery combustion into the atmosphere due to the closed property of the fire extinguishing cover. In addition, the fire extinguishing wastewater containing harmful substances generated in the fire extinguishing process is limited in the cleaning chamber inside the fire extinguishing cover.

The utility model relates to the technical field of waste heat recovery, and one embodiment of the utility model provides a waste heat recovery device for a multistage MVR evaporator, the waste heat recovery device comprises a temperature recovery box, the upper end of the temperature recovery box is provided with a feeding port, an evaporation condensation assembly is arranged in the temperature recovery box, a small-diameter pipe is sleeved with a large-diameter pipe, and a large-diameter pipe is arranged in the temperature recovery box; a heater is arranged at the bottom of the temperature recycling box and attached to the large-diameter pipe, a condensation box is arranged on the inner side wall of the temperature recycling box, resistance increasing pieces are arranged on the inner side wall of the condensation box, crossed pieces are arranged on the outer side wall of the large-diameter pipe, and the crossed pieces and the resistance increasing pieces are arranged in a crossed mode. According to the technical scheme, the technical problems that a traditional waste heat recovery technology in the related technology / the prior art has many limitations, for example, a simple heat exchanger can only recover part of sensible heat and is low in latent heat recovery efficiency, and some complex waste heat recovery systems are often huge in equipment, high in investment cost and large in operation and maintenance difficulty are solved.

The utility model discloses multi-angle mechanical part spraying equipment which comprises a spraying protection box, a hydraulic oil cylinder is installed at the top end of the spraying protection box, a telescopic rod is inserted into the top end of the interior of the spraying protection box, a sliding rod is inserted into the bottom of the telescopic rod, and the sliding rod is sleeved with an upper fixing base. A connecting rod is inserted into the upper fixing seat, a lower mounting frame is connected to the bottom of the connecting rod, a spraying nozzle is mounted in the lower mounting frame, and a locking knob is inserted into the front end of the lower mounting frame. By arranging the spraying adjusting structure, during use, the connecting rod is connected with the sliding rod in a sleeving manner through the upper fixing seat, the locking knob penetrates through the upper fixing seat to be in contact with the sliding rod so as to fix the upper fixing seat, and the spraying nozzle is clamped on the lower mounting frame at the bottom of the connecting rod; the hydraulic oil cylinder and the telescopic rod ascend and descend to drive the spraying nozzle installed at the bottom of the sliding rod to ascend and descend, and therefore the spraying adjusting function is achieved.

The present invention relates to the technical field of heat exchange devices, and in particular to a device for recycling exhaust gas emitted from the production of lignite, which solves the problems in the prior art of low recycling rate of exhaust gas emitted from the production of lignite, serious environmental pollution, and insufficient utilization of combustible gas and waste heat. A device for recycling exhaust gas emitted from the production of lignite, including a mounting frame, which serves as a supporting structure for the entire system, and is loaded with a combustion component, a smoke filter component, a heat exchange component, a particulate purification component, and an exhaust component, to ensure that each component closely cooperates and operates efficiently. The present invention effectively improves the combustion efficiency of combustible gases in the exhaust gas and the recycling rate of waste heat through multi-stage purification and heat exchange treatment, reduces the emission of harmful substances, and at the same time ensures the cleanliness of the exhaust gas and the final emission quality, thereby achieving efficient and environmentally friendly utilization of the exhaust gas and promoting the green and sustainable development of the lignite industry.

The utility model discloses an automobile parts spraying equipment, including base and the support rod of assembly in the top of base, and the support rod of assembly in the outside of support rod, the top and bottom of slide all fixed mounting have fixed seat, the bottom of slide is fixed mounting on the base through fixed seat, the utility model relates to the technical field of automobile parts processing. The automobile parts spraying equipment, through the cooperation between recovery cover and recovery pipe, recovery cover installs opposite electric spray head, through recovery cover, the extra spray of sputtering of electric spray head operation can be recovered and handled, avoids the situation that the paint mist of sputtering flows into the work area and causes the harm to the health of staff, and can sputter the paint mist and recover, through the cooperation of water curtain ring and recovery ring, can form water curtain on the outside when equipment operation, through water curtain, can intercept, adsorb and settle oversprayed paint mist, greatly reduces particulate matter pollution and health risk.

The utility model discloses belong to sol waste gas recovery technical field, concretely be a kind of plastic bottle sol waste gas recovery device, including closed sol device, closed sol device exhaust hole intercommunication setting gas collection cover, gas collection cover outside intercommunication setting exhaust pipe, condensing component includes the condenser being set intercommunication with exhaust pipe, condenser air inlet end and exhaust pipe end intercommunication, condenser is set collection groove in, adsorption component and condenser exhaust end butt joint, after the waste gas secondary processing condenser of condenser processing can remove high-temperature steam and soluble material, reduce waste gas temperature, reduce subsequent processing load, the design of gas distribution plate+shunt hole, can optimize airflow distribution, avoid adsorption dead angle, improve adsorption efficiency, and air purifier can carry out final purification to the gas after adsorption processing, ensure that emission gas meets environmental protection standard.

This utility model provides an anaerobic pyrolysis carbonization furnace for chemical waste salt, relating to the technical field of chemical waste treatment equipment. It includes a carbonization furnace assembly, with a crushing component and an adsorption component at the top. The furnace assembly includes a main body with a heating structure, and the crushing component includes a crushing box. This utility model uses a rotating motor to electrically drive the crushing rollers to rotate, causing the two rollers to rotate in opposite directions. This facilitates the breaking up of agglomerated waste salt, reducing the amount of agglomerated waste salt entering the interior of the carbonization furnace body. It also promotes full contact between the waste salt and the internal heat and anaerobic protective gas of the furnace body, improving pollutant removal efficiency and treatment efficiency. A rotating motor also drives the cover plate to rotate, which facilitates its rotation during pyrolysis treatment in the carbonization furnace body. Combined with a sealing frame, this improves sealing performance.

The invention discloses intelligent bamboo charcoal firing equipment and method based on the Internet of Things, and belongs to the technical field of bamboo charcoal firing equipment.The intelligent bamboo charcoal firing equipment comprises a bamboo charcoal firing unit, the bamboo charcoal firing unit comprises a kiln body, the kiln body is provided with a heating device, an air inlet adjusting device and an air exhaust adjusting device, and the air exhaust adjusting device communicates with a flue gas treatment device; the bamboo charcoal firing unit is arranged in the kiln body, the Internet of Things sensing unit is arranged in the kiln body, the intelligent control unit is in signal connection with the Internet of Things sensing unit and the bamboo charcoal firing unit, the data communication unit is connected with the intelligent control unit, and the remote monitoring unit conducts data interaction with the intelligent control unit through the data communication unit. According to the intelligent bamboo charcoal firing equipment and method based on the Internet of Things, traditional artificial experience is replaced with Internet of Things perception and intelligent closed-loop control, the process consistency and controllability are improved, then the bamboo charcoal product quality is improved, and the yield and production continuity are improved.

The invention discloses a closed cycle process system and method for producing green ammonia and co-producing nitric acid by using green electricity. The closed cycle process system comprises a PEM electrolytic bath, a PSA air separation device, a synthetic ammonia reactor and a nitric acid production system, an oxygen outlet of the PEM electrolytic cell is connected with a gas inlet of the PSA air separation device, a nitrogen outlet of the PSA air separation device is connected with a nitrogen inlet of the synthesis ammonia reactor, a hydrogen outlet of the PEM electrolytic cell is connected with a hydrogen inlet of the synthesis ammonia reactor, and an ammonia outlet of the synthesis ammonia reactor is connected with an ammonia inlet of the nitric acid production system. And an oxygen outlet of the PSA air separation device is connected with an oxygen inlet of the nitric acid production system. By constructing a full-chain closed-loop system, self-sufficiency circulation of hydrogen, nitrogen and oxygen ternary substances is achieved, the oxygen utilization rate is increased to 94.8% or above from 50%, zero outsourcing of nitrogen is achieved, the overall energy efficiency of the system is increased by 5.5-9.1%, oxygen emission and nitrogen outsourcing are thoroughly eliminated, the raw material cost is remarkably reduced, and the energy consumption is reduced. And green production with near-zero carbon emission is realized.

The invention provides a carbon capture comprehensive utilization and energy recovery method and device. The device comprises a gas oxidation treatment power generation system, a heat recovery system, a carbon capture system, a carbon dioxide refining system, a carbon dioxide gasification system, a carbon conversion system and a heat exchange system. Raw material gas with high-concentration carbon dioxide gas is treated through the carbon dioxide refining system, and the raw material gas is converted into high-concentration liquid carbon dioxide to be stored. Impurity gas in the raw material gas is combusted through a gas oxidation treatment power generation system, and energy is recovered to supply power to a generator. Combusted high-temperature gas enters the carbon capture system after heat recovery and heat exchange, and enters the carbon dioxide refining system again for storage after concentration; high-concentration liquid carbon dioxide enters the carbon conversion system through the gasification system and is further converted into chemicals and fuel. According to the invention, efficient comprehensive utilization of capture, refining and conversion of carbon dioxide gas is realized, energy is recovered, and the method has the advantages of reducing energy consumption, improving resource utilization rate and the like.

The invention relates to the technical field of high-frequency welding equipment, in particular to rotary file full-automatic high-frequency welding equipment which comprises a machine body, the machine body comprises an equipment box, and a workbench, a swing arm material taking work station, a file head feeding work station, a soldering flux work station, a soldering lug feeding work station, a handle feeding work station and a welding work station are arranged at the top of the equipment box. The swing arm material taking work station, the file head feeding work station, the scaling powder work station, the soldering lug feeding work station, the handle feeding work station and the welding work station are all arranged on the upper surface of the equipment box. The device is simple in structure, high in production efficiency and high in automation degree, the production cost is saved, meanwhile, the product welding concentricity is high, circumferential rotation is matched in the welding process, the welding uniformity is guaranteed, air generated in the middle of a welding seam during welding can be eliminated, the finished product quality is improved, in addition, workers do not make direct contact with high-temperature workpieces, and the safety of the workers is guaranteed.

The application discloses a method for calcining cement raw materials in a methane atmosphere and co-producing carbon materials. The method comprises the following steps: mixing cement raw materials with solid waste in a reactor under a methane atmosphere, and calcining to obtain cement clinker, carbon monoxide, hydrogen and solid carbon materials; the solid waste is selected from at least one of the following: blast furnace slag, high-iron fly ash, steel slag, stainless steel slag, iron oxide scale and red mud. The method effectively reduces carbon emissions in the cement production process, and simultaneously produces synthesis gas and carbon materials, greatly improving the economic efficiency and environmental benefits of the process. In addition, the catalyst can come from by-products of the steel and aluminum smelting industry, realizing waste resource utilization. The technology provides a new way for the green and low-carbon transformation of the cement industry.

An energy-saving aluminum alloy air quenching rapid cooling system belongs to the technical field of aluminum alloy heat treatment, and comprises a flue gas waste heat recovery module for collecting waste flue gas, the flue gas waste heat recovery module provides heat for a refrigeration module 6, and the refrigeration module 6 provides cold for an air quenching module to realize air quenching of workpieces. The flue gas waste heat recovery module comprises a heat exchanger 8 connected with a waste flue gas collection pipeline, and waste flue gas provides heat for the refrigeration module 6 in the heat exchanger 8. The waste heat of the waste smoke generated in the industrial production process is fully utilized to drive the refrigerating system, dependence on traditional energy is greatly reduced, direct emission of high-temperature smoke is reduced through effective recovery and energy utilization of the waste smoke, pollution load to the environment is reduced, and clean production is achieved.

The utility model discloses a peony seed drying device which comprises a drying box and a heat generator communicated with the drying box, a plurality of exhaust ports are formed in one side of the drying box, and each exhaust port is communicated with an air inlet I of the heat generator through a hot air recovery assembly. Heat in exhausted hot and humid air is recycled through the hot air recycling assembly, and the recycled hot and humid air can be used as a part of input of the heat generator after being properly treated to preheat cold air entering the heat generator, so that the drying effect is optimized, the energy consumption of the heat generator is reduced, and the energy consumption of the heat generator is reduced. And the energy utilization efficiency of the whole drying device is improved. And meanwhile, direct emission of hot and humid air is reduced, thermal pollution and humidity influence on the environment can be reduced, and the environmental protection performance of the device is improved.

The utility model relates to the technical field of TO furnaces, in particular to a waste heat recovery type TO furnace for tail gas treatment, which comprises a combustion chamber body, an opening is arranged on the front surface of the combustion chamber body, an access door is mounted on the inner wall of the opening of the combustion chamber body, and an ignition device is mounted on the ground surface of a cavity of the combustion chamber body. A tail gas inlet is formed in the side surface of the upper end of the combustion chamber body. The waste heat recovery type TO furnace for tail gas treatment is provided with the heat exchange cavity and the heat exchange plate body, when the waste heat recovery type TO furnace for tail gas treatment works, tail gas is combusted through the combustion chamber body, then generated high-temperature flue gas is guided into the heat exchange cavity, the high-temperature flue gas makes contact with the heat exchange plate body, and the heat exchange plate body can conveniently transfer heat to a heat conduction oil pipeline for heating; heat energy is provided for heating equipment in isobutylbenzene production, the energy utilization efficiency is remarkably improved, dependence on external energy is reduced through recycling of waste heat, and the operation cost of the system is reduced.

The utility model provides waste gas treatment equipment for waste incineration power generation, which belongs to the field of waste gas treatment equipment and comprises a heat exchange box, a dust removal component is arranged on one side of the heat exchange box, and a waste gas treatment component is arranged on the other side of the heat exchange box. When incinerated high-temperature flue gas enters the dust removal box from the feed port, the dust removal assembly is arranged in the dust removal box to filter impurities in the flue gas, the filtered high-temperature flue gas enters the heat exchange box from the discharge port through the conveying pipeline, the heat exchange assembly is arranged in the heat exchange box, and high temperature in the high-temperature flue gas is recycled through the heat exchange assembly. Direct emission of high-temperature flue gas is reduced, the temperature of surrounding air is increased, an induced draft fan is started, the induced draft fan extracts flue gas in a heat exchange box and conveys the flue gas into a denitration tower through a connecting pipeline, a water pump is started, the water pump extracts a denitration agent in a water storage box and sprays the denitration agent into the denitration tower through a spraying pipeline, and the connecting pipeline is arranged below the spraying pipeline.

The invention provides an atomization device and a denitration system.The atomization device comprises a boiler deaerator, a first pipeline, a second pipeline and a spraying mechanism, the boiler deaerator is used for outputting steam, the first pipeline communicates with the boiler deaerator and is used for leading out the steam in the boiler deaerator, and the second pipeline is used for conveying a reducing agent; the first pipeline and the second pipeline communicate with the spraying mechanism so that the steam can atomize the reducing agent. According to the atomization device, steam of the boiler deaerator is used for atomizing a reducing agent of the denitration system, heat energy recycling is achieved, and the energy-saving effect is achieved; reducing agent consumption can be reduced, and energy consumption is reduced; direct steam emission of the boiler deaerator is reduced, and noise generated by emptying of the boiler deaerator can be effectively reduced; the reducing agent and flue gas mixing temperature difference is reduced, and the denitration efficiency is improved; and meanwhile, the possibility of flue dust deposition and corrosion and rust penetration caused by reducing agent cooling and condensation is reduced.

This invention discloses a main engine exhaust carbon collection system and its control method, as well as a dual-fuel LNG ship. By setting a carbon recovery pipeline on the main engine exhaust pipe and integrating the carbon recovery pipeline with the gas supply system of the ship's main engine, CO2 in the main engine exhaust gas is recovered through physical phase change. This can ensure the purity of dry ice preparation and effectively remove CO2 from the main engine exhaust gas emitted into the atmosphere, thereby reducing direct CO2 emissions.

The present application relates to waste resource processing technical field, especially in kind of small off-grid solar driven plastic waste pyrolysis oil system and method, system adopts modular integrated design, including solar energy collection module, pretreatment unit, pyrolysis reaction system, separation and refining device and electrical control system, each module is connected through standardization interface, total floor area is less than or equal to 15 square meters, daily processing capacity is 50-100kg.Solar energy collection module is for system power supply, pyrolysis reaction system adopts electromagnetic induction heating, and mixed plastic is pyrolyzed under the condition of no oxygen, and product is obtained by three-stage condensation and vacuum rectification to obtain diesel oil and gasoline fraction.The present application also provides the corresponding pyrolysis oil method.The present application realizes off-grid energy self-sufficient plastic treatment, system is compact, deployment is fast, degree of automation is high, can handle various mixed plastics, significantly reduces carbon emission, and is suitable for rural, island, industrial park and other dispersed scenes.

This application discloses a device for recovering and deeply purifying vinyl chloride synthesis displacement gas, specifically relating to the field of chemical gas treatment technology. It includes two alkaline scrubbing towers connected in series, with each tower's outlet equipped with a gas-liquid separator. The end pipes of the two series-connected alkaline scrubbing towers are connected to a raw material gas buffer tank. The outlet of the raw material gas buffer tank is connected to an adsorption tower. The outlet of the adsorption tower's desorbed gas is connected to a vacuum pump. The top crude purified gas outlet of the adsorption tower is connected to a purified gas buffer tank. The outlet of the purified gas buffer tank is connected to a heater. A circulating fan for pressurization is installed between the purified gas buffer tank and the heater. The heater's outlet is connected to two dehydrocarbonization towers connected in series. The end pipes of the two series-connected dehydrocarbonization towers are connected to a cooler. Furthermore, the cooler and the adjacent dehydrocarbonization tower are connected by a circulating pipe leading to the inlet of the circulating fan. This application reduces pipeline corrosion and successfully recovers gases such as vinyl chloride and acetylene.

The utility model provides a circulating water return water waste heat recovery system which is characterized in that a compression type heat pump unit is arranged between a circulating water field and a municipal heat supply network water supply pipeline, heat of waste heat water in circulating water is transferred to return water in the municipal heat supply network water supply pipeline through the compression type heat pump unit, and heat supply network water supply is heated. And the waste heat water after heat recovery returns to the circulating water field. According to the system, the compression heat pump technology is adopted, efficient recycling of circulating water waste heat is achieved, and the waste heat recycling amount meets the regional heating requirement; the running number of fans of the circulating water field can be reduced, the electric quantity is saved, the heat dissipation and evaporation capacity of circulating water is reduced, the real-time water supplementing amount is reduced, and fresh water consumption is reduced; direct emission of waste heat is reduced, and thermal pollution is reduced.

The invention discloses a system and a method for recycling carbon dioxide in carburizing waste gas, and belongs to the technical field of industrial waste gas recycling. The method mainly comprises the following steps: 1, preliminary process: treating carburizing waste gas in a combustion manner, and pretreating the combusted waste gas to remove impurities; 2, methanol preparation process: adding hydrogen into the carbon dioxide waste gas obtained after pretreatment to reduce the carbon dioxide waste gas into methanol; and 3, a methanol recycling process: the generated methanol is directly conveyed into a carburizing atmosphere after being subjected to a rectification purification process. The technology is a green transformation technology, waste gas can be reasonably reutilized, in summer, the heat loss of the environment temperature rising, the pipeline conveying process and the pretreatment link can be greatly reduced, waste heat in the waste gas can also be utilized, and the energy consumption of the technological process can also be greatly reduced. Meanwhile, the method has the advantage of reducing direct carbon emission of carbon dioxide in the production and operation process, and double benefits of energy conservation, emission reduction and efficient utilization of resources are achieved.

The present application belongs to the technical field of steel metallurgical production, and particularly relates to a pellet-electric furnace cogeneration system and method, wherein the system comprises: a chain grate machine for drying and preheating carbon-containing green pellets; a rotary kiln connected with the chain grate machine for reducing the preheated green pellets to generate metallized pellets and reducing gas; a waste gas utilization device for introducing the reducing gas into the chain grate machine for waste heat utilization, and using the utilized gas as auxiliary fuel for the chain grate machine combustion section and the rotary kiln; and a horizontal continuous charging electric furnace with a scrap steel preheating section communicated with a rotary kiln discharge end, which utilizes high-temperature metallized pellet waste heat and electric furnace flue gas to preheat the scrap steel, and the preheated material is fed into the electric furnace body for smelting. The present application realizes hot-state direct charging of metallized pellets into the electric furnace, avoids heat loss in the cooling and transfer process, significantly reduces electric furnace smelting energy consumption, and improves production efficiency.

The invention discloses a marble-imitated slab texture printing machine and a printing method, and belongs to the technical field of printing machines, the marble-imitated slab texture printing machine comprises a conveying frame and a containing groove, a printing and drying integrated box is arranged at the upper end of the conveying frame, and a conveying belt is arranged in the conveying frame in a transmission mode; a printing mechanism, an exhaust mechanism and a drying mechanism are arranged in the printing and drying integrated box, a limiting assembly is arranged at the upper end of the conveying belt, the exhaust mechanism comprises an air inducing cover, the air inducing cover is located at the upper end of the printing and drying integrated box, an exhaust pipe is fixedly arranged at the upper end of the air inducing cover, and an induced draft fan is installed in the exhaust pipe. And a purification bin is arranged above the induced draft fan. And printing and drying are synchronously carried out, so that the time interval caused by separate operation in the traditional process is avoided, and the idle time between production links is reduced. And through seamless connection of printing and drying, the working efficiency of a production line can be greatly improved, the production process of the marble-imitated plate is accelerated, and the overall production capacity is improved.

The utility model relates to the technical field of wastewater treatment, in particular to a desulfurization wastewater treatment system for a ceramic factory, which comprises a treatment separation system, a quenching evaporation system, a dust removal discharge system and a kiln, the treatment and separation system is used for treating the desulfurization wastewater and separating out clear water and sludge; the quenching evaporation system is used for receiving the clear water separated by the treatment separation system and quenching the clear water, and the quenching evaporation system is further used for receiving hot air discharged by the kiln and spraying the quenched clear water to the hot air; the dust removal and discharge system is used for receiving the hot air cooled by the quenching evaporation system, removing dust from the hot air and then discharging the hot air; and the quenching evaporation system comprises a quenching spray gun, a quenching evaporation tower and a quenching fan. When hot gas discharged from the tail section of the kiln enters the quenching evaporation tower, the desulfurization wastewater treated by the treatment separation system is sprayed to the hot gas through the quenching spray gun, so that the hot gas is cooled, the direct discharge of the desulfurization wastewater is reduced, and the resource utilization of the desulfurization wastewater is realized.

The application discloses a kind of FCC catalyst low carbon regeneration methods, which comprises the following steps: to be deactivated FCC catalyst is carried out vibration sieve pretreatment and removes dust impurities;The catalyst to be regenerated is sent into low-temperature regeneration reactor, control regeneration temperature is in preset low-temperature range, while mixed gas of carbon dioxide and oxygen is imported to carry out catalytic regeneration;Flue gas is carried out pressure swing adsorption separation and purification, and separated carbon dioxide is recycled into regeneration reactor;The activity index of catalyst after regeneration is monitored, and after reaching threshold, it is sent out and recycled.The application significantly reduces the energy consumption of regeneration process by using low-temperature regeneration technology, significantly reduces the emission by recycling and reusing carbon dioxide through flue gas recycling regeneration, further improves energy utilization efficiency through waste heat recovery system, realizes the dual goal of low energy consumption and low carbon dioxide emission, and provides technical support for green and low-carbon development of oil refining industry.

The invention provides a carbon dioxide capture-desorption-conversion integrated device and method, and relates to the field of carbon dioxide desorption, the device comprises a base, a shell is arranged above the base, a transmission unit is arranged below the base, and an adsorption material is arranged in the shell; pipelines are arranged on the two sides of the shell; a fixing unit is arranged on the adsorption material, and the transmission unit is connected with the fixing unit. According to the carbon dioxide capture-desorption-conversion integrated device and method, an economical and feasible carbon neutralization solution is provided for small scenes such as families, the technical blank is made up, energy conservation and emission reduction are facilitated, efficiency and economical efficiency are improved, and important practical value is provided for achieving the global carbon neutralization target.

The invention provides a method for preparing 1, 5-dimethyl-2-nitryl imido-hexahydro-1, 3, 5-triazine from clothianidin wastewater, and relates to the technical field of chemical preparation, the method comprises the following steps: Sp1, preparing a reaction liquid 1: standing clothianidin acid wastewater for layering, taking the upper-layer acid wastewater, and carrying out reduced pressure distillation to obtain an acid distillate and a mother solution; and dropwise adding liquid caustic soda into the mother liquor to adjust the pH value to be neutral, then continuously dropwise adding the liquid caustic soda to adjust the pH value to be alkaline, and meanwhile, heating to absorb ethylamine to obtain a reaction solution 1, and the method significantly reduces the wastewater generation amount, the acid strength and the environmental risk. According to the method, the clothianidin acid wastewater is subjected to targeted treatment, ethylamine in the clothianidin acid wastewater is effectively recovered and directly used for synthesis of downstream triazine compounds, the defect that a large amount of high-salinity wastewater is generated in traditional neutralization treatment is overcome, the direct discharge amount of strong-acidity wastewater is reduced, the risks of water acidification and ammonia nitrogen pollution are reduced, and the method is suitable for industrial production. The environment protection is facilitated.

The application relates to the technical field of hydrogen storage replacement, and discloses a pressure-maintaining replacement method, device, equipment and medium for a cascade hydrogen storage system. The pressure-maintaining replacement method comprises the following steps: stopping the charging of high-pressure inert gas to a first target value after the high-pressure inert gas is charged into a first gas cylinder group; gradually opening cylinder valves of each gas cylinder group, and charging the gas cylinder groups from the high-pressure side to the low-pressure side; opening a venting port, discharging the last gas cylinder group into the air, and then closing all the cylinder valves and the venting port except the first gas cylinder group; charging high-pressure hydrogen into the first gas cylinder group through a hydrogen charging port until the high-pressure pressure reaches a third target value, and gradually charging the gas cylinder groups from the high-pressure side to the low-pressure side to ensure the purity of hydrogen; discharging the last gas cylinder group into the air to ensure the purity of hydrogen, and closing the venting port. The pressure-maintaining replacement method, device, equipment and medium solve the technical problems that the gas replacement time of a multi-cylinder hydrogen storage system is long, the efficiency is low, the direct discharge of gas into the air leads to high cost and potential safety hazards.