419 results about "Zero emission" patented technology

The invention relates to the technical field of flue gas recirculation, in particular to a bell-type annealing furnace oxygen-rich combustion flue gas recycling system and method, and the system comprises a circulating flue gas heating cylinder, an oxygen-rich combustor and a system control valve group; oxygen of the oxygen-rich combustor is mixed with fuel, after the fuel enters the circulating flue gas heating cylinder, the oxygen is mixed with part of the fuel to form root flame, and the unburned fuel and oxygen are completely combusted in the circulating flue gas heating cylinder to form flameless flame; the number of the circulating flue gas heating cylinders is one or more, each circulating flue gas heating cylinder is provided with an oxygen-rich combustor, heat generated by combustion is used for heating flue gas generated by combustion of oxygen and fuel in the circulating flue gas heating cylinders, the heated flue gas is circulated to the bell-type furnace through the high-temperature and high-pressure circulating flue gas fan, and redundant flue gas is recycled in a centralized mode. According to the system, heat is fully utilized through flue gas circulation, heating uniformity and quality are improved, combustion flue gas is high-purity carbon dioxide, and zero emission of the flue gas can be achieved through trapping and recycling.

The invention discloses a range-extended hybrid motorboat system and a control method, and relates to the technical field of new energy engineering, and the system comprises a man-machine interaction unit which is used for receiving an operation instruction and displaying a system state; the system control unit is used for receiving a user instruction and feedback information and issuing a control instruction to the corresponding unit; the high-low voltage unit is used for storing, converting and distributing the electric energy; and the power integration unit is used for providing a fuel power source for the range extending mode and comprises an engine, an engine controller, an electric control ISG motor, an electric control driving motor, a cooling device, a fuel tank and a liquid level sensor. The range-extended hybrid power mode of fuel power generation and motor driving is adopted, the battery is continuously charged or the electric control driving motor is directly supplied with power when the electric quantity is insufficient, energy can be quickly supplemented through refueling, the problems that a pure electric motorboat is short in endurance and inconvenient to charge are effectively solved, and the service life of the pure electric motorboat is prolonged. The advantages of low noise and zero emission of pure electric drive and long endurance of fuel power are achieved.

The embodiment of the utility model provides zero-emission methanol preparation equipment based on garbage gasification and water electrolysis. The equipment comprises a water electrolysis hydrogen production unit, a garbage gasification unit, a first methanol synthesis unit, a second methanol synthesis unit and a gas separation unit, the water electrolysis hydrogen production unit is respectively connected with the garbage gasification unit, the first methanol synthesis unit and the second methanol synthesis unit; the gas separation unit is respectively connected with the garbage gasification unit, the first methanol synthesis unit and the second methanol synthesis unit; the water electrolysis hydrogen production unit generates hydrogen and oxygen through electrolysis; the garbage gasification unit is used for carrying out gasification reaction by using oxygen provided by the water electrolysis hydrogen production unit to prepare synthesis gas containing carbon monoxide, carbon dioxide and hydrogen; the gas separation unit is used for separating carbon monoxide, carbon dioxide and hydrogen in the synthesis gas introduced from the garbage gasification unit, the carbon monoxide and the hydrogen are introduced into the first methanol synthesis unit, and the carbon dioxide is introduced into the second methanol synthesis unit for preparing methanol respectively.

A fleet and trolley system, a first method of charging a work machine, and a second method of charging a fleet of work machines are disclosed. The fleet and trolley system includes a trolley network, at least one zero-emission work machine, and a controller. The controller manages a scheduled usage of the trolley network, a power draw, and a distribution of the power draw by the work machine. The first method includes monitoring states of the work machine, scheduling a usage of the trolley network, and supplying electric power to the work machine. The second method includes monitoring states of a fleet, monitoring states of the trolley network, scheduling usages of the trolley network, and supplying electric power to one or more machines of the fleet. Advantageously, the disclosed system and methods may improve an efficiency, productivity, and longevity of a fleet of zero-emission work machines.

The application relates to the technical field of wastewater treatment equipment, in particular to a zero-emission multistage wastewater treatment device for industrial high-salinity wastewater, which comprises a base, a fixing frame fixedly installed on the base and a supporting limiting frame fixedly installed on the fixing frame, the supporting limiting frame is slidably connected with a heat exchange box, the front end face of the fixing frame is provided with limiting assemblies corresponding to the heat exchange box on both sides, a sedimentation tank and a core treatment tank are installed on the fixing frame from top to bottom and located at the bottom of the heat exchange box, the heat exchange box, the sedimentation tank and the core treatment tank are sequentially communicated through connecting channels, a feeding pipe is arranged on the side wall of the sedimentation tank, the sealing assembly is driven to rotate by a motor-driven screw rod, the extrusion frame is driven to slide along the guide column, the pressure of the extrusion frame on the third sealing frame can be automatically adjusted, the extrusion plate can be tightly combined with the third sealing frame, the pressure is uniformly distributed, the traditional manual sealing adjustment mode is replaced, and the sealing reliability is further improved.

The invention provides a resource comprehensive utilization method of vanadium-containing steel slag and vanadium extraction tailings, and belongs to the technical field of application of metallurgical slag. Comprising the following steps: (1) proportioning raw materials; (2) low-temperature roasting pretreatment; (3) directionally extracting vanadium; (4) cleaning, reducing and extracting iron; (5) residues are functionally utilized; from the perspective of the whole scheme, all the steps are closely connected and have a synergistic effect. The raw material ratio and low-temperature roasting pretreatment lay a good foundation for subsequent directional vanadium extraction and clean reduction iron extraction, so that the vanadium and iron extraction is more efficient; and the residues obtained after vanadium extraction and iron extraction are subjected to functional utilization to prepare the light-weight insulating bricks, so that zero emission and resource utilization of the waste residues are realized. The method not only solves the environmental problem caused by accumulation of the vanadium-containing steel slag and the vanadium extraction tailings, but also has a good industrial application prospect by efficiently recovering vanadium and iron resources and preparing the light insulating brick with a high additional value.

The invention belongs to the technical field of tunnel construction, and particularly relates to tunnel new energy operation equipment and an energy consumption control method thereof.The tunnel new energy operation equipment comprises a crawler chassis, the crawler chassis is driven by a motor, an electric telescopic arm is fixedly installed on the surface of the crawler chassis, and an external cable is slidably connected to the inner wall of the electric telescopic arm; the external cable is used for being connected with a power grid to provide electric energy for operation equipment. According to the tunnel new energy operation equipment and the energy consumption control method thereof, by arranging the energy storage driving control mechanism and the rotary conductive mechanism, seamless switching and 360-degree continuous rotation operation of the equipment in a power grid direct supply mode and a battery power supply mode are achieved when the equipment is used, and waste gas pollution in a tunnel is fundamentally eliminated. The system has the characteristics of zero emission, low noise and high energy utilization rate, the direct electric charge and ventilation energy consumption are remarkably reduced, the comprehensive energy consumption is reduced, and a brand new green and efficient equipment solution is provided for tunnel construction.

The invention provides an intelligent regulation and control flue gas denitration and desulfurization system, and relates to the field of flue gas denitration and desulfurization. The intelligent regulation and control flue gas denitration and desulfurization system comprises a flue gas inlet, a pretreatment module is arranged at the output end of the flue gas inlet, and a denitration system C and a desulfurization system D are arranged at the two output ends of the pretreatment module. According to the system, flue gas is sequentially treated through the flue gas inlet, the pretreatment module, the denitration system C and the desulfurization system D, data intercommunication and cooperative regulation and control of all links are achieved through the intelligent management and control platform, the system is different from a traditional denitration-desulfurization independent operation mode, the removal efficiency is improved by 5%-10%, and the energy consumption is reduced. Meanwhile, a denitration waste catalyst is recycled through a resource recycling system, desulfurization waste water is subjected to zero-discharge treatment to achieve gypsum high-valued treatment and waste water recycling, the comprehensive utilization rate of solid waste is larger than or equal to 90%, the treatment cost is reduced by 30% compared with a traditional process, and a digital twin engine (the running state of a real-time mirroring physical system supports virtual debugging of process parameters) is adopted.

The invention discloses a cement tanker cleaning waste recycling mechanism which comprises a circulating pool and a circulating pump, the circulating pump can continuously convey slurry waste in the circulating pool into a tanker, the slurry waste repeatedly cleans the tanker, the concentration of the slurry waste is increased, and the standard of semi-finished products of materials is met; the grain recycling pool can be used for collecting rainwater, hardened waste on the outer wall of the tank car and particle waste; and the arc-shaped scraping plate is used for conveying the hardened waste materials and the particle waste materials in the grain material recycling pool into the grain material storage pool. The grain recycling system has the beneficial effects that through the arrangement of the circulating pool, the grain recycling pool and the grain storage pool, the grain recycling pool can collect particle waste on a tank car body, particle waste washed in along with rainwater in a plant and particle waste separated by a solid-liquid separator, the recycling range is expanded, waste water in the plant is fully utilized, and the grain recycling system is environmentally friendly and free of pollution. And zero emission is realized.

The invention discloses a skid-mounted peroxy low-level radioactive waste incineration treatment device and process. The skid-mounted peroxy low-level radioactive waste incineration treatment device comprises a shell. The incineration assembly is arranged on the inner wall of the shell; the treatment assembly is arranged on the inner wall of the shell and comprises a bag-type dust collector arranged on the inner wall of the shell, a spraying mechanism connected with the inner wall of the bag-type dust collector, a two-stage filter arranged on one side of the shell and a condenser arranged on the inner wall of the shell. Through flue gas purification and condensate water recovery, zero discharge of wastewater is ensured, the filter is prevented from losing efficacy due to accumulation of condensate water, and the operation efficiency and safety of the system are improved.

The invention belongs to the technical field of blast furnace gas treatment, and relates to a method for controlling zero emission of gas in a single blast furnace, which comprises the following steps: step 1, carrying out comprehensive adjustment according to original gas balance, and maintaining gas supply and demand balance; 2, by means of interval regulation and control of the gas holder, dynamic storage of the gas holder and pressure stabilization of a pipe network are achieved; step 3, effectively controlling a switch valve group of tail end diffusion to ensure that the tail end diffusion is safe and controllable; and 4, emergency treatment is conducted in the abnormal production state, special measures are made for blast furnace air reduction, gas flow abnormity and gas temperature abnormity, system safety is guaranteed preferentially, and the zero-emission target is dynamically maintained. According to the method, efficient utilization and zero emission of the blast furnace gas are achieved through multi-link cooperative regulation and control, environmental pollution is reduced, and production economy is improved.

The application provides a photoresist waste liquid recycling device and process, by adding hydrochloric acid to the photoresist waste liquid in the acidification precipitation tank in the pretreatment module to adjust the pH value, the linear phenolic resin precipitation rate reaches more than 95%, and the linear phenolic resin can be used again to the production stage of the photoresist after centrifugal separation, a compound coagulant containing sulfide and polyaluminum chloride is added to the heavy metal capture tank in the pretreatment module, and the removal rate of heavy metal ions reaches 99.5%; then the photoresist fragments are separated by using an ultrafiltration device, and the diatomite modified by NaOH and polyetherimide is used for adsorption and decolorization, then two-stage vacuum distillation process is used to realize the recovery of high-purity solvents in the photoresist waste liquid, finally, the remaining residue is polymerized and cured by ultraviolet radiation, and the solid fuel with high heat value can also be prepared, so that the 'zero emission' and resource full recovery of the photoresist waste liquid are realized, and the treatment cost and environmental risk are significantly reduced.

The application relates to an IGCC system coupled with biomass and near-zero emission high-purity CO2 capture and a working method thereof, and belongs to the field of coal gasification combined cycle power generation coupled with biomass, in particular to an IGCC system coupled with biomass and near-zero emission high-purity CO2 capture and a working method thereof. The application is used for solving the problems that the existing IGCC system has low CO2 capture rate, high energy consumption, low power generation efficiency, and a large amount of nitrogen generated in the oxygen taking process and difficult to effectively utilize. The application comprises an air separation device, a gasification furnace, a sensible heat recovery device, a purification device, a gas power generation unit, a waste heat recovery unit, a steam power generation unit, a biomass fermentation device, a methane reforming unit, an adsorption separation unit and an ammonia synthesis tower. The application is based on the overall coal gasification combined cycle power generation system of post-combustion CO2 capture and oxygen-enriched combustion technology, introduces a biomass ammonia synthesis process, generates H2 and CO through biomass fermentation and reforming, utilizes N2, and improves the system efficiency.

The invention belongs to the technical field of energy conservation and emission reduction of sintering circular coolers, and particularly relates to a sintering circular cooler medium-temperature area cross circulation combined waste heat total recovery and zero emission system which comprises a circular cooler, a circular cooling air blower, a waste heat boiler, a circulating fan, a steam turbine generator unit, a condenser and a condensate pump. The waste heat boiler is formed by combining two sets of waste heat boilers, one set of waste heat boiler is a first-section and second-section waste heat boiler, flue gas is taken from a first section and a second section, and exhaust air at the bottom of the first-section and second-section waste heat boiler returns to the first section and the second section through a circulating fan; the other set of waste heat boiler is an overhead three-section waste heat boiler, flue gas of the three-section waste heat boiler is taken from a third section, exhaust air of the three-section waste heat boiler returns to a fourth section, and flue gas of the fourth section returns to the third section; the two waste heat boilers are communicated with a steam supplementing opening of the steam turbine generator unit. The system has the advantages that a new waste heat utilization steam and hot water circulation system is constructed by utilizing the steam supplementing and condensing type steam turbine, and zero emission is realized.

The invention provides a zero-emission power circulation and fuel gas supply system and method for an LNG power-driven ship. The system comprises an internal combustion engine, a nitrogen membrane separation device, a heat regenerator, a water separator, a liquid CO2 storage tank, a liquid oxygen pump, an LNG pump, an LNG storage tank, a liquid oxygen storage tank, a CO2 condenser, a circulation compressor, a gas buffer tank, a CO2 separator, a first-stage water cooler and a second-stage intermediate heat exchanger. According to the internal combustion engine, LNG serves as fuel, an argon and oxygen mixture serves as a circulating working medium to replace air and natural gas to be combusted and push a piston to move, water vapor and gas CO2 in waste gas generated by the internal combustion engine are condensed and separated after being subjected to stepped cooling, and CO2 is liquefied through a circulating compressor and recycled to a liquid CO2 storage tank. According to the invention, argon is used for replacing air to realize waste heat recovery of the internal combustion engine, so that the energy efficiency of the system is improved, and meanwhile, CO2 capture and zero emission of gaseous pollutants are realized.

The invention aims to provide a sintering ring cold waste gas zero emission treatment system and method, and relates to the technical field of waste gas emission in the steel industry. The system comprises a circular cooler, a waste heat boiler and a blast furnace ore tank, a waste gas outlet of the cooling section generating high-temperature waste gas is connected with a waste gas inlet of the waste heat boiler, and a waste gas outlet of the waste heat boiler is connected with air boxes below trolleys of the cooling sections generating the high-temperature waste gas, so that the high-temperature waste gas enters the waste heat boiler to be subjected to waste heat recovery and then enters the cooling sections again to be recycled. The cooling section for generating the medium and low temperature waste gas is connected with the blast furnace ore tank, and the medium and low temperature waste gas is introduced into the blast furnace ore tank to supply heat to the blast furnace ore tank. According to the sintering ring cooler waste gas zero emission system, cross-process resource collaboration is achieved, meanwhile, waste gas is completely consumed, the purpose of sintering ring cooler waste gas zero emission is achieved, other large equipment is not added, and the sintering ring cooler waste gas zero emission system has the advantages of being simple in structure and low in maintenance cost.

The invention relates to the technical field of insulating powder coatings, in particular to a stone-impact-resistant insulating powder coating for an automobile battery tray and a preparation method of the stone-impact-resistant insulating powder coating. The coating is prepared from the following raw materials in parts by weight: epoxy resin A, epoxy resin B, nitrile rubber modified epoxy resin, a phenolic resin curing agent, quartz powder, a flatting agent, pigment, a curing accelerator, an anti-settling agent, an adhesion promoter, a defoaming agent and an electricity increasing agent. The coating is synchronously endowed with ultrahigh insulativity and top-level stone impact resistance through single-time coating, and a secondary construction link is thoroughly canceled; zero VOC emission is realized by adopting a solid powder system; the special toughening resin and the gradient curing process enable the coating to have both rigid protection and toughness buffering, the actually measured stone impact resistance grade is greater than 9 grade, the breakdown voltage meets 6kV, and the leakage current is 1t; and the high-voltage battery system perfectly meets the strict requirements of the high-voltage battery system of the electric vehicle on safety and environmental protection, and solves the technical defects in the traditional scheme.

The utility model relates to the related technical field of reclaimed water treatment, in particular to a zero-discharge reclaimed water recycling device which comprises a base and a pretreatment mechanism, the pretreatment mechanism is arranged on one side of the surface of the base, a biological treatment mechanism is arranged on one side of the surface of the base, and a disinfection mechanism is arranged at one end of the base. According to the reclaimed water recycling device based on zero emission, through the arrangement of the pretreatment mechanism, firstly, reclaimed water is introduced into the water inlet, then a control valve on the water inlet is opened, the reclaimed water enters the first box body through the water inlet, and at the moment, a grating in the water inlet filters particles in the reclaimed water for the first time; when water in the first box body rises to the first filter screen, the first filter screen arranged in the two layers can enter the reclaimed water in the first box body for secondary filtration, when the water level completely overflows the first filter screen, the water pump on the first connecting pipe is opened, the reclaimed water above the first filter screen can be pumped away, and pretreatment of the reclaimed water is completed.

The invention provides a method for preparing iron red by chloridizing and separating an iron-containing alloy and application, and the method comprises the following steps: adding a chlorinating agent into the iron-containing alloy for roasting to obtain roasting slag and roasting flue gas; introducing a first oxidizing gas into the roasting flue gas, and performing primary roasting transformation to obtain a solid and a first mixed gas; introducing a second oxidizing gas into the solid, and carrying out secondary roasting transformation to obtain the iron oxide red and a second mixed gas; wherein the first mixed gas comprises chlorine and ferric oxide gas; the second mixed gas comprises oxygen and chlorine. The method has the characteristic of short flow, realizes zero emission through chlorine medium closed-loop circulation, has the advantages of environmental friendliness and process advancement, and is suitable for large-scale industrial production.

The invention belongs to the technical field of underground water purification of deep foundation pit engineering, and relates to a system and a method for purifying and recycling underground water of deep foundation pit engineering. The method comprises the six steps of precipitation well pretreatment, rotational flow precipitation coagulation, biological membrane purification monitoring, membrane separation chemical oxidation, sludge dehydration recycling and intelligent monitoring and regulation. According to the invention, organic matters and ammonia nitrogen are synchronously degraded under a bubble-free aeration condition, so that the effluent stably reaches the standard, and the treatment efficiency and the operation stability are improved. Through the synergistic effect of a direct-current electric field and mechanical pressure, a sludge colloid structure is destroyed, water is driven to directionally migrate, sludge is dewatered, dewatered sludge and building waste soil are sintered to prepare ceramsite, secondary dewatered filtrate is subjected to reflux treatment, sludge reduction and recycling and filtrate zero emission are achieved, and efficient recycling of water resources is achieved. The water quality, membrane state and environmental data are collected in real time, the system stability is improved through full-process intelligent control, it is ensured that effluent continuously reaches the standard, and the membrane cleaning period is prolonged through predictive maintenance.

A method for melting vitrifiable materials to produce flat glass, including: providing a furnace including: a melting tank, a fining tank, a neck, at least one inlet means located at the melting tank, an outlet means located downstream of the fining tank, and at least one extraction means of a flue gas located at the at least one upstream zone; charging the vitrifiable materials including raw materials and cullet in the melting tank with the at least one inlet means; cullet pre-heating; melting the vitrifiable materials in the melting tank; fining the melt in the fining tank; flowing the melt from the fining tank to a working zone through the outlet means; and capturing CO2 from the flue gas.

The invention relates to a novel LNG receiving station storage tank BOG replacement zero-emission system and an implementation method, and on the basis of the design of an original LNG receiving station, the arrangement of equipment and facilities of the original LNG receiving station is not changed, and BOG replacement is carried out by adopting the operation scheme of the method. And the natural gas in the high-pressure output pipeline is returned to a BOG pipeline of the LNG storage tank through a throttling expansion device on the high-pressure gas supply pipeline, and the natural gas subjected to throttling expansion pressure reduction is introduced into the LNG storage tank from the tank top. Gas in the storage tank passes through the pump cylinder of the low-pressure pump from the bottom of the storage tank to the emptying valve on the pump cylinder connecting pipeline and is emptied outwards. Meanwhile, low-temperature BOG gas is introduced into a discharging pipeline and enters the storage tank through an upper liquid inlet and a spraying pipeline through the discharging pipeline, and the flow is cut off after precooling of the discharging pipeline of the storage tank is completed; the replacement process is simple and convenient, easy to operate and obvious in energy-saving effect.

This invention discloses a zero-emission synergistic waste heat utilization system and method for sintering ring cooler exhaust gas. The exhaust gas outlets of sections I and II of the ring cooler are connected to the exhaust gas inlet of a waste heat boiler; the exhaust gas outlet of the waste heat boiler is connected to the air inlet of a first circulating fan, and the air outlet of the first circulating fan is divided into two paths, respectively connected to the section I and section II air boxes of the ring cooler, forming a flue gas circulation between sections I and II of the ring cooler; the air inlet of the first cooling fan is connected to the outdoor environment; the air outlet of the first cooling fan is connected to the section V air box of the ring cooler; the exhaust gas outlet of section V of the ring cooler is sequentially connected to the second circulating fan and the section IV air box of the ring cooler; the exhaust gas outlet of section IV of the ring cooler is sequentially connected to the third circulating fan and the section III air box of the ring cooler; the exhaust gas outlet of section III of the ring cooler is connected to the hot air hood of the sintering machine. This invention achieves efficient utilization of high-grade thermal energy.

A device (1) for rapidly transferring thermal energy from a thermal energy source (A) to a destination point (B) at a rate higher than the convection and heat transfer capacity of adjacent means 2 and for capturing said thermal energy point or surface, wherein a thermoelectric conversion means located at the destination point B can convert the thermal energy into electrical energy with zero emissions harmful to the environment and living things. The thermal energy is transferred by a coating 4 composed of a plurality of nanometric layers with atoms forming a regular geometric structure (Figure 1). The present invention also relates to a device for the transfer of thermal energy having multiple layers of carbonaceous material on a planar or non-planar (three-dimensional shape), opaque, transparent or translucent, rigid or semi-rigid substrate of fabric, metallic or non-metallic or flexible material, having flexible but not opaque, transparent or translucent natural or synthetic fibers. The present invention also includes a method for manufacturing a device (10 or 10a) for the rapid transfer of thermal energy. The method comprises at least one deposition step of at least one layer (12, 12a-12b-12c-12d, etc.) of a carbonaceous material having a regular geometric structure on a support substrate (11 or 11a) in an environment (110) of a deposition machine (100), the environment being vacuum-packed under controlled temperature and pressure conditions and isolated from the external environment, the deposition being performed along a direction perpendicular or locally radial to a plane or shape substantially defined by the support substrate (11 or 11a). The present invention also relates to an integrated system for generating electrical energy using said device coupled to a possible generator other than a renewable energy source of thermoelectric generator, photovoltaic and / or thermoelectric-photovoltaic and / or motive power type, all used jointly for the supply of an electrical load.

The invention relates to the technical field of flue gas treatment, in particular to a thermal power plant flue gas pollutant zero emission and recovery system which comprises a pretreatment unit, a desulfurization, denitrification and decarbonization integrated unit, a deep purification unit and a pollutant recovery unit which are communicated in sequence. The control system is electrically connected with the pretreatment unit, the desulfurization, denitrification and decarbonization integrated unit, the deep purification unit and the pollutant recovery unit respectively; the pretreatment unit is used for cooling and dedusting flue gas discharged from the thermal power plant; the desulfurization, denitrification and decarburization integrated unit is used for carrying out desulfurization, denitrification and decarburization synchronous treatment on the pretreated flue gas; the deep purification unit is used for carrying out residual pollutant removal treatment on the flue gas subjected to desulfurization, denitrification and decarbonization treatment, so that the pollutant concentration in the flue gas meets the zero emission requirement; the pollutant recovery unit is used for separating, purifying and recovering generated pollutant products; the control system is used for monitoring operation parameters of all the units in real time and automatically adjusting the operation state.

The invention relates to a post-treatment reduction device, an engine post-treatment system and a control method thereof, the post-treatment reduction device comprises a box-type packaging shell, and the interior of the box-type packaging shell is sequentially divided into an air inlet distribution cavity, a carrier reaction cavity and a confluence cavity according to the airflow direction. A hydrogen selective catalytic reduction unit and an ammonia selective catalytic reduction unit are arranged in the carrier reaction cavity in parallel; a shielding blade driven by a telescopic piece is arranged in the air inlet distribution cavity, and tail gas can be dynamically distributed to the two SCR units in proportion according to the temperature of the tail gas, so that the low-temperature activity of H2-SCR and the high-temperature efficiency of NH3-SCR are fully utilized, and all-working-condition efficient purification is achieved. By means of integrated box type packaging, the integrated box type engine has the advantages of being compact in structure, good in heat preservation performance and low in back pressure, built-in noise reduction is achieved through carrier gaps and the porous partition plate, and finally a highly-integrated and intelligent solution is provided for the hydrogen fuel engine to achieve near-zero emission.

A pipeline-integrated power generation system for remote oil and gas sites is disclosed. The system utilizes a flow-through generator with contactless magnetic coupling to eliminate shaft seals and dynamic penetrations. The system comprises a pipeline with a flow restriction device creating pressure differential, branch and return lines routing pressurized fluid through the flow through generator, and a sealed housing defining pressurized and atmospheric portions separated by a non-magnetic generator wall. A turbine wheel, shaft, and permanent magnets operate within the sealed portion, while external windings in the unsealed portion generate electricity through magnetic coupling across the generator wall. The contactless design eliminates leak paths, reduces maintenance requirements, and provides zero-emission power generation from existing pipeline flow. The sealed, self-contained design minimizes maintenance and enhances durability, suitable for remote locations.

The invention relates to a device and a method for thinning an ultrathin precise metal mask substrate, the device comprises a rack, two ends of the rack are respectively provided with an unwinding roller and a winding roller, and a tension control system is arranged between the unwinding roller and the winding roller; a processing tank and a liquid storage tank are arranged at one end, close to the unwinding roller, of the rack; a water retaining roller, a power-on mechanism, an electromagnetic field particle buncher, two cathode plates and a circulating pump are arranged at a water return opening in the processing tank; in the working process, the winding roller conducts continuous winding, the unwinding roller conducts continuous unwinding, the metal steel belt makes close contact with the electrifying mechanism to form an anode, the circulating pump works continuously, the two cathode plates are all immersed in liquid, and under the control of the electromagnetic field particle buncher, guiding control is conducted on movement of electron beams generated in the machining process; and the metal steel strip in the processing groove is subjected to uniform material reduction processing. The plasma polishing technology is adopted for carrying out directional plasma bombardment on the microscopic protrusions of the metal steel strip, so that material reduction machining of the metal steel strip is achieved, and zero emission is achieved in the whole process.