835 results about "Low emission" patented technology

The invention discloses a ship carbon emission on-line monitoring method, device and equipment, and the method comprises the steps: building a comprehensive emission feature library through collecting infrared absorption spectrum, gas flow and other multi-source emission signals in a ship operation process; eliminating gas cross interference by adopting a spectrum separation analysis technology, and establishing a concentration inversion mechanism to generate an independent monitoring domain; high and low emission working condition modes are identified through working condition relevance evaluation, and intelligent allocation of monitoring resources is achieved; marine environment compensation nodes are established, layered temperature and humidity correction control is implemented, and environment-adaptive ship environment parameters are generated; the multi-stage early warning trigger time is determined by adopting an early warning threshold backward deduction analysis technology, a ship emission monitoring time sequence table and a graded monitoring instruction set are constructed, full-working-condition, all-weather and high-precision intelligent monitoring of ship emission is realized, and reliable technical guarantee is provided for ship environmental protection compliance and marine environmental protection.

The invention provides a PLC-based biomass gasification industrial steam full-automatic intelligent control system and method. The system comprises a data acquisition module, a modeling identification module, a multi-objective optimization module, a rolling prediction control module, a coordination execution module, a self-adaptive correction module and an abnormal fault tolerance and safety control module. The system collects operation data of a feeding system, a gasification furnace, a boiler, a steam-water system and an environmental protection system in real time through a PLC platform, a dynamic coupling model of a combustion side, a steam-water side and an environmental protection side is established, and a multi-target constraint optimization model with stable steam pressure, up-to-standard emission and minimum energy consumption as targets is constructed. According to the invention, unattended operation of the biomass gasification industrial steam system is realized, the system has the advantages of high control precision, low energy consumption, stable emission and strong fault-tolerant capability, and the intelligence and safety of the industrial steam system are obviously improved.

The invention discloses a multi-layer gradient composite polyethylene lining hose and a microwave triggering repairing method thereof, the multi-layer gradient composite polyethylene lining hose comprises a self-repairing functional layer, a reinforcing framework layer, an interface bonding layer and an outer protective layer which are sequentially compounded from inside to outside, and the invention relates to the technical field of pipeline repairing. According to the multi-layer gradient composite polyethylene lining hose and the microwave triggering repairing method thereof, through combination of a multi-layer gradient composite structure (a self-repairing layer, a reinforcing framework and a gradient interface) and a microwave triggering repairing technology, three major breakthroughs are achieved: 1) the service life of a pipeline is prolonged to 50 years (the self-repairing efficiency is greater than or equal to 85%); (2) the repairing efficiency is improved by 3 times (DN1000 pipe is less than or equal to 8 hours), (3) the energy consumption is reduced by 70% (microwave directional curing), an intelligent monitoring system (optical fiber sensing and AI analysis) ensures the construction precision (the gap is less than or equal to 2 mm), high strength (the ring stiffness is SN12 grade), low emission (the carbon emission is reduced by 65%) and wide applicability (DN300-DN3000) are achieved, and a traditional pipeline repairing mode is thoroughly innovated.

The invention discloses a flue gas compensation type pulverized coal wide-load stable combustion system based on staged combustion and intelligent regulation and control and a control method, and belongs to the technical field of coal-fired power generation. The system is composed of a combustor, an intelligent control module and a flue gas backflow module, the combustor adopts a double-ring fuel channel design, an inner ring injects high-concentration pulverized coal and is provided with an adjustable swirler, and pulverized coal-flue gas mixed airflow is introduced into an outer ring; the intelligent control module predicts a load through an LSTM neural network, and realizes accurate matching of air and coal in combination with PID adjustment; and the flue gas backflow module adopts an oxygen concentration adjustable technology to maintain the combustion intensity. Under the working condition of 30%-40% low load, the system achieves the stable combustion effect that the flame center temperature is stabilized at 920 + / -20 DEG C by means of optimizing the proportion of inner ring pulverized coal to 75%-85%, increasing the primary air temperature to 145-170 DEG C, compressing the proportion of secondary air to 20%-30%, strengthening a swirling flow field to 45 degrees and the like in cooperation with flue gas backflow with the oxygen concentration of 23%-25%, and has the advantages of efficient combustion and low emission.

The invention relates to the technical field of microwave ferrite devices, and discloses a double-section microstrip circulator which comprises a magnetic conductive sheet, a ferrite gyromagnet and a resistor, the ferrite gyromagnet and the resistor are arranged on the upper surface of the magnetic conductive sheet, a circuit is additionally arranged on the upper surface of the ferrite gyromagnet, and the circuit is connected with a microstrip filter; the ceramic chip is arranged on the upper surface of the circuit, and samarium cobalt is additionally arranged at the top end of the ceramic chip, according to the two-section microstrip circulator, through the arrangement of a combined structure of the magnetic conductive sheet, the ferrite gyromagnet, the circuit, the microstrip filter, the ceramic chip, the samarium cobalt and the resistor, the isolation degree can be effectively improved, and the requirement of a system for high isolation is met; the microstrip filter in circuit connection can improve the second harmonic characteristic and improve the problem that the second harmonic of a conventional microstrip circulator is poor; the ferrite gyromagnet is used as a gyromagnet material, and is combined with a double-section circuit, so that the characteristic of low emission loss can be realized, and the circulator is small in size, light in weight and relatively high in reliability due to the integral structural design.

The invention relates to the technical field of pure ammonia combustors, in particular to a catalytic auxiliary cracking plasma pure ammonia combustor and an operation method thereof. According to the technical scheme, the device comprises catalytic cracking areas, a purification area, a pre-combustion area, a main combustion area, an ammonia supply area and a waste heat system, the catalytic cracking areas are arranged on the two sides of a combustor and comprise an ammonia gas inlet channel and a catalytic reaction area internally provided with a porous medium, and a catalyst fixedly grows on the surface of the porous medium; the purification area is located outside the combustor and connected with an outlet of the catalytic cracking area through a pipeline, and selective separation membranes are arranged at the outlet end and the exhaust end of the purification area respectively; the pre-combustion areas are distributed on the two sides of the main combustion area, comprise air inlet channels and plasma igniters and communicate with an outlet of the purification area. According to the invention, the problems of ignition, stable combustion and low NOx emission of the ammonia fuel are solved, the unification of efficient energy utilization and industrial applicability is realized, and a key technical support is provided for large-scale application of the ammonia alternative fuel in an industrial kiln.

The invention discloses an air-fuel ratio control method for a high-pressure direct injection engine in a diesel-natural gas dual-fuel cylinder, and relates to the technical field of engine control, and the air-fuel ratio control method comprises the following steps: collecting diesel mass flow, natural gas volume flow and natural gas component data, and determining a diesel-natural gas mixing ratio; a basic target air-fuel ratio is obtained by combining the real-time rotating speed of an engine, the load and the diesel oil-natural gas mixing proportion; based on the pressure and temperature of the intake manifold and the rotating speed of the engine, the target air-fuel ratio after model correction is obtained; the working condition load change rate is detected, the pre-optimized air-fuel ratio trajectory MAP is called, and a transient correction target value is generated; calculating the deviation between the transient correction target value and the measured value of the air-fuel ratio sensor and the deviation change rate, and outputting an air-fuel ratio correction value; and the final target air-fuel ratio is calculated and sent to an air flow control valve to execute air inlet adjustment. The method is suitable for engine application scenes requiring high-precision and self-adaptive control to improve combustion efficiency and reduce emission.

The invention relates to the technical field of ammonia control and denitrification of kiln flue gas, in particular to an ammonia control and denitrification method for kiln flue gas for preparing cement from carbide slag based on waste heat utilization. According to the technical scheme, the method comprises the following steps that waste heat cooperative utilization is conducted, specifically, flue gas waste heat is subjected to graded utilization through three waste heat recovery systems, specifically, kiln bypass waste heat utilization is conducted, flue gas is extracted from a kiln bypass dechlorination high-temperature area at about 350 DEG C, and the overall energy consumption of the system is reduced; the atomization effect of the calcium nitrate solution is optimized by adopting the nano dispersing agent, and the sulfur resistance of the modified catalyst is combined, so that efficient and stable denitration reaction is realized, ammonia escape is accurately controlled, finally, the flue gas of the kiln can meet the ultralow emission requirement, and secondary pollution to the environment is greatly reduced; the modular reactor design and the dynamic predictive control technology enhance the adaptability of the system to complex working conditions, meanwhile, fuel consumption is further reduced through waste heat recycling and raw flue gas preheating, the service life of equipment is prolonged, and the operation cost of the system is remarkably reduced.

The invention provides a pollution reduction and carbon reduction cooperation path optimization method and system based on an industry technology. The method comprises the following steps: selecting one or more production processes or technical improvement technologies of any industry in pollution reduction and carbon reduction cooperation technology data of each industry; for the production processes selected by each industry, determining one of the production processes as a reference production process; solving the optimal activity level of each technology on the basis of satisfying each constraint based on a linear programming mode; calculating the consumption required by emission reduction of each unit of emissions; calculating the total emission reduction of each technology under the optimal activity level condition of each technology; and constructing a marginal emission reduction consumption curve to obtain the priority of the inter-industry and intra-industry pollution reduction and carbon reduction technology application. The method has the advantages that various technical selections and activity level quantification of various emissions under the multi-constraint condition and the lowest emission reduction consumption target are realized; the complexity of model operation is effectively reduced, and the system operation efficiency is improved.

According to the denitration predictive control method based on the LSTM and the PINN, production data are collected in real time, a complex time sequence dynamic state is captured through an LSTM time sequence prediction model, the NOx concentration and the ammonia escape amount in 2-3 minutes in the future are predicted, and the lag problem in a traditional control method is solved. Meanwhile, in combination with the physical constraint of the PINN, it is ensured that the prediction result conforms to the physical law, and the prediction precision and stability are improved. In addition, an ammonia spraying amount adjusting strategy is optimized by adopting reinforcement learning, the frequency of an ammonia water pump is dynamically adjusted, the maximum use efficiency of ammonia water is ensured, and waste is reduced. Data acquisition adopts MQTT and OPC protocols, data real-time performance and accuracy are ensured, and a Kalman filtering algorithm is used for removing abnormal values. The method can effectively improve the precision, the stability and the response speed of a denitration system, optimizes denitration control, meets the ultra-low emission requirement of the iron and steel industry, and has remarkable environmental protection and economic benefits.

The invention discloses a small micro-superheated steam through-flow type gas condensation boiler, belongs to the technical field of boilers, and solves the problems that the current small gas boiler is developed towards the high-efficiency, low-emission and compact direction, and particularly pays attention to waste heat recovery and steam quality control. Comprising an annular water chamber allowing water to enter, a combustion chamber arranged above the annular water chamber and an ultra-low nitrogen surface fiber combustor located above the combustion chamber and communicated with the combustion chamber, and an annular steam chamber is arranged above the combustion chamber. The ultra-low nitrogen surface fiber burner works to burn gas and raise the temperature, and the composite fin straight water pipe converts water in the water pipe into wet steam through efficient heat exchange of the spiral fins and enters the annular steam chamber. External water is injected into the annular water chamber through the finned tube group of the flue gas condenser and the connecting tube, and then enters the steam chamber through the straight tube. Wet steam in the steam chamber enters the superheater through an inlet pipe to form micro superheated steam. Combustion smoke is condensed and discharged after being filtered by a filter screen and subjected to heat exchange, and dryness of the combustion chamber is guaranteed.

The invention discloses a steering control method and device for a distributed wheel set independent drive steering drive-by-wire chassis, and the method comprises the steps: carrying out the real-time decision according to a path tracking condition, and obtaining a vehicle motion demand signal; determining a target deflection value of each wheel set in combination with a vehicle kinematics relationship; determining the differential required rotating speed of each wheel set according to the deflection target value and the actual feedback value of each wheel set, and coordinately distributing the differential required rotating speed to each driving wheel; according to the vehicle speed demand signal and the steering demand signal, the basic rotating speed of each wheel (group) after entering the target steady-state steering is solved in real time; the differential required rotating speed and the basic required rotating speed of each wheel set are superposed to serve as the target rotating speed of each wheel; and the motor driving control system controls the output torque of each motor according to the target rotating speed and the actual rotating speed of each driving wheel. The maneuverability and flexibility of the special vehicle are effectively improved, the response speed of the whole vehicle is increased, and meanwhile more ideal pose control is achieved, so that the working efficiency is effectively improved, the burden of workers is reduced, and the emission level is reduced.

The invention relates to the technical field of high polymer material injection molding, and particularly provides a spraying-free button preparation method based on a double-shot injection molding process, and the spraying-free button preparation method based on the double-shot injection molding process is characterized in that through the double-shot injection molding process of polyketone (POK) and thermoplastic elastomer (TPE), temperature gradient control, mold rotation and micropore interface interlocking technologies are combined; and spraying-free, high-gloss, wear-resistant and environment-friendly button manufacturing is realized. The POK base body is subjected to high-temperature injection molding in the first injection mode, the TPE surface layer is subjected to low-temperature injection molding in the second injection mode, mechanical interlocking is formed through micropore filling, and the bonding capacity can be improved by 30% or above. According to the method, a traditional paint baking procedure is omitted, the comprehensive cost is reduced by 15%-20%, VOC emission tends to zero, and the method is suitable for production of decoration parts such as clothes and bags.

The utility model provides an algal-bacterial symbiosis synergistic denitrification reaction device based on anaerobic ammonia oxidation, and relates to the technical field of wastewater treatment. The device comprises a reactor and a plurality of biological ribbons arranged in the reactor, a water inlet and a water outlet are formed in the two ends of the reactor respectively, the biological ribbons are vertically distributed in the reactor in the water flow direction and divide the reactor into a plurality of reaction spaces, and the two ends of the tops of the biological ribbons are fixed to the side wall of the reactor; and the height of the biological ribbon is lower than that of the reactor. The anaerobic ammonia oxidation-phycomycete symbiotic system is introduced into the reactor containing the biological ribbons, low-energy-consumption and low-emission treatment of low-C / N urban domestic sewage is achieved, the biological ribbons are selected as a loading material of the reactor, the interior of the reactor is provided with rich pore structures, and the biological ribbons are loaded on the reactor. A large amount of biological attachment surface area is provided for growth and reproduction of algae and other microorganisms in water, and a large amount of attachment sites and powerful growth conditions are provided, so that the sewage treatment effect is improved.

The invention relates to the technical field of engine control, in particular to an engine combustion control method, device and system based on double oil sprayers and a computer program product. Comprising the steps that when an engine enters a lean-burn working condition and meets a self-learning condition, self-learning of the injection starting angle and the excess air coefficient of an auxiliary oil injector is conducted; ignition advance angle self-learning of the auxiliary fuel injector is carried out; and fuel injection control over the auxiliary fuel injector is conducted on the basis of the injection starting angle, the excess air coefficient and the ignition advance angle obtained through self-learning. And when refined fuel oil control is carried out to achieve the optimal fuel consumption of the engine, the lowest NOx emission requirement under the lean-burn working condition of the engine is met.

The invention belongs to the technical field of industrial boiler control and parameter configuration, and particularly provides a boiler multi-modal data collaborative configuration optimization method based on the industrial internet, and the method mainly comprises the steps: obtaining boiler operation data through the industrial internet; dividing the boiler operation data into operation modal characteristic data and working condition characterization data; generating a boiler parameter optimization relation matrix according to the operation mode characteristic data; performing parameter fusion recombination and cooperative state coding processing on the boiler parameter optimization relation matrix to generate a cooperative configuration parameter set; and outputting a final optimization control instruction set of boiler operation according to the collaborative configuration parameter set and the working condition representation data. The energy efficiency and emission indexes of the boiler can be improved, linkage adjustment of global balance temperature and pressure parameters is achieved, system oscillation and safety conflicts are avoided, the load fluctuation response precision is enhanced through a real-time closed-loop mechanism, stable operation is ensured, and safe, efficient and low-emission collaborative optimization is achieved.

This disclosure relates to tool string embodiments, system embodiments, and method embodiments for testing and / or sampling a formation in an open hole hydrocarbon well, for example in order to determine whether the well merits production. Disclosed embodiments can be concerned with minimizing hydrocarbon emissions during testing, for example to provide a greener testing approach. Thus, improvements to reservoir testing a hydrocarbon well are disclosed.

The utility model relates to a diesel engine and a combustion chamber thereof. The combustion chamber of the diesel engine comprises a main body, a boss part and a pit part, the boss part is arranged on one side, far away from the top surface, of the main body, and is formed by protruding towards the direction close to the top surface; the pit part is connected with the boss part, the pit part is formed by sinking in the direction away from the top face, and a necking opening is formed in the end, close to the top face, of the pit part; in the depth direction, the range of the distance H1 from the top face to the deepest point of the pit part is 0.11 D-0. 15D, in the first direction, the range of the size D1 of the necking opening is 0.49 D-0. 53D, and D is the cylinder diameter of the diesel engine. Through the arrangement of the H1 and the D1, the volume of the combustion chamber is reduced, then a high compression ratio can be obtained, high compression pressure is provided through the high compression ratio, efficient combustion under the partial load working condition can be achieved, and the combustion efficiency is guaranteed; and meanwhile, the air utilization rate can be improved, fuel and air can be fully mixed and combusted, the fuel consumption of the engine is effectively reduced, and the requirements of high performance and low emission of the diesel engine are met.

The invention belongs to the field of new energy, and particularly relates to a water-cooled grate biomass gasifier and a biomass gasification method. The water-cooled grate biomass gasification furnace comprises a gasification furnace body of a downdraft structure, the gasification furnace body is internally provided with a feeding system, the feeding system comprises a feeding chute, a feeding sealing door and a feeding sealing door, the feeding chute is provided with an anaerobic system pipeline, and a feeding grate is located below the feeding sealing door; the water-cooling fire grate assembly is composed of multi-stage welding type water-cooling fire grate segments, and a cooling water cavity is formed in the water-cooling fire grate assembly. The hearth is divided into a drying layer, a pyrolysis layer, a reduction layer and an oxidation layer in the material moving direction. The gasifying agent supply system comprises a primary air duct, a secondary air duct, a steam injection pipeline I and a water vapor injection pipeline II, wherein pure oxygen is introduced into the primary air duct; the cooling circulation system comprises a circulation pipeline, a circulation water pump and a radiator, wherein the circulation water pump and the radiator are installed on the circulation pipeline. The circulation pipeline is communicated with the water-cooling fire grate assembly to form a closed circulation loop. The device is high in reliability, long in service life, low in emission, easy to control and good in gasification effect.

The invention relates to the technical field of coatings, and discloses an anti-falling environment-friendly wall paint and a preparation method thereof.The wall paint is composed of, by weight, 30-40 parts of composite resin, 10-20 parts of nanoscale filler, 10-20 parts of auxiliaries and 10-20 parts of additives. 10 to 14 parts of a nano-scale filling material; 5-10 parts of an auxiliary agent; the preparation method comprises the following steps: preparing the composite resin, the nano-scale filler, the auxiliary agent and the additive according to the weight parts of the formula, putting the composite resin and the nano-scale filler into a high-speed dispersion kettle, setting stirring conditions, adding the auxiliary agent twice, adding the additive again, adjusting the stirring conditions, forming a mixed system, adding the thickening agent and the deionized water to adjust the viscosity, forming a mixed material, and uniformly stirring. The preparation method comprises the following steps: adding the raw materials into a stirrer for stirring, adjusting the acid-base balance of the materials, carrying out curing treatment, carrying out defoaming operation on the cured materials under a vacuum condition for 15-20 minutes, completing the preparation of the wall paint, and finally detecting that the wall paint has the advantages of low VOC emission, no formaldehyde, no benzene, excellent adhesive force and strong weather resistance.

The invention relates to a photocatalytic self-cleaning water-based paint and a preparation method thereof, which are applied to the field of paint compositions, and the photocatalytic self-cleaning water-based paint realizes self-decomposition of organic dirt and self-inactivation of pathogenic microorganisms by doping a nano-photocatalyst into a water-based system and utilizing a photocatalytic reaction triggered by light energy, and can purify pollutants in air, so that the photocatalytic self-cleaning water-based paint has the advantages of environmental protection and environmental protection. The formula of the coating is optimized, so that the photocatalyst is uniformly dispersed and stably exists in the coating, the coating not only has efficient action under ultraviolet light, but also has certain activity under visible light conditions, and in addition, the coating is a water-based system, is low in VOCs emission, safe and environment-friendly, and has a good application prospect. The self-cleaning antibacterial air purifying coating is suitable for construction and use in a manned environment, creatively integrates self-cleaning, antibacterial and air purifying functions into a whole so as to solve the problems that in the prior art, outer walls and public environment surfaces are difficult to clean and maintain, and a traditional coating lacks active purifying and antibacterial capabilities, and has important practical application value.

The invention discloses a flue gas multi-pollutant cooperative treatment system, a treatment method and application, belongs to the technical field of flue gas purification, and aims to solve the technical problems of short service life and high flue gas requirement of a catalytic filter bag for flue gas treatment. In the treatment system, a catalytic filter bag is arranged in the integrated dust remover; the flue gas inlet section of the dry-process reactor is communicated with an oxidizing agent conveying module for conveying an oxidizing agent into the dry-process reactor, a deacidification agent conveying module for conveying a deacidification agent into the dry-process reactor and an activated carbon conveying module for conveying activated carbon into the dry-process reactor; and the flue gas outlet section of the dry-method reactor is communicated with a reducing agent conveying module for conveying a reducing agent into the integrated dust remover. Compared with the prior art, the process flow can be shortened, the occupied area of equipment is reduced, the power consumption and the consumption of consumables are reduced (economical efficiency), ultralow emission of pollutants (environment friendliness) is guaranteed, the modification cost is low, the service life of the catalytic filter bag is long, operation and maintenance are easy and convenient, and the energy utilization rate is high.

The invention discloses an ammonia burner based on plasma catalytic ammonia cracking and zoning regulation and control, and relates to the field of aero-engine combustion chamber structures. The head is combined with a staged combustion technology and a plasma and ammonia catalytic cracking concept, and is one of effective methods for keeping the combustion chamber to work stably, reliably and effectively with low emission. Comprising a flame tube casing serving as a burner body, a first-stage swirler, a second-stage swirler and a third-stage swirler are arranged on the front portion of the flame tube casing, an ammonia gas supply nozzle is arranged in the first-stage swirler, a metal cracker is arranged on the periphery of the ammonia gas supply nozzle, and therefore a plasma discharge area is formed between the ammonia gas supply nozzle and the metal cracker; a plurality of main combustion holes and a plurality of mixing holes are formed in the middle of the side wall of the flame tube case. The stability, ignition performance and temperature uniformity of the ammonia combustor are improved, and the ammonia combustor has the advantages of being high in ignition and flameout capacity, low in emission, reliable in structure and the like and is suitable for efficient clean combustion systems in the fields of aviation, energy and the like.

The invention discloses industrial solid waste treatment and resource utilization, and particularly relates to a washing-free sintering resource treatment method for household garbage incineration fly ash. Fly ash which is not washed with water, a silicon-aluminum hardening and tempering agent and solid fuel are mixed according to a specific proportion, granulated and sintered, and dioxin control and heavy metal directional migration are achieved through the temperature gradient of a material layer. According to the invention, low-temperature (1t, 150 DEG C) and low-pollution flue gas is shunted for common purification according to the temperature and component difference of flue gas at each sintering section, and dust (product dust) is returned for utilization; high-temperature (more than or equal to 150 DEG C) and high-pollution flue gas is divided for quenching and activated carbon deep purification, and dust (heavy metal concentrated ash) of the flue gas is sold for metallurgy. According to the invention, the fly ash washing link is thoroughly omitted, and the consumption of the adsorbent and the operation cost are greatly reduced while ultra-low emission is ensured through a flue gas quality-dividing and flow-dividing technology, so that low-cost, thorough harmlessness and high-value recycling of the fly ash are realized.

The invention relates to a method and system for controlling starting of an engine of a hybrid vehicle, and the method comprises the steps that when the engine stops, whether the engine is to be started in a driving path or not is judged at least based on the driving working condition of the hybrid vehicle, and the driving working condition is predicted at least based on road condition information; under the condition that it is judged that the engine is to be started, the to-be-output power and the first predicted starting time of the engine are determined; a first load of the engine under the to-be-output power is compared with a second load of the engine, and pollutants generated by the engine under the second load have the lowest emission level; if the first load is higher than the second load, the engine is started at a second predicted start time prior to the first predicted start time, and the engine is operated at the second load until before the first predicted start time.

The present invention relates to a low-emission device and method for a liquefied natural gas filling station with a pump, comprising a low-temperature storage tank (10), a submersible pump (20) and a gas dispenser (30), and a BOG recovery skid (40). The BOG recovery skid is provided with a recovery skid liquid inlet (41), a recovery skid liquid outlet (42) and a recovery skid gas inlet (43). The recovery skid liquid inlet (41) is connected to the submersible pump outlet (21), the recovery skid liquid outlet (42) is connected to the gas dispenser liquid phase port (31), the recovery skid gas inlet (43) is connected to the gas phase port (11) of the low-temperature storage tank, the gas return port (12) of the low-temperature storage tank is connected to the gas phase port (32) of the gas dispenser, and the liquid phase port (13) of the low-temperature storage tank is connected to the submersible pump inlet (22). The present invention uses a BOG recovery skid with a BOG recovery function, which can reduce BOG emissions, reduce resource waste, and improve the economic benefits of the gas station. The BOG recovery skid is independently configured and installed, and can be easily connected to existing LNG filling station equipment. There is no need to upgrade or modify the original equipment, and it does not affect the operation and control methods of the original system. It is particularly suitable for small LNG filling stations with small gas volumes.

The invention discloses a full-premixing combustion device and a condensation type gas water heater, and the combustion device comprises a premixing cavity which is connected with a gas valve and a fan, and in the premixing cavity, gas input by the gas valve and air input by the fan are mixed to obtain mixed gas; the ignition needle is arranged near the combustor, the ignition needle is used for igniting the mixed gas, and the combustor is used for guiding high-temperature gas flow generated by combustion to radiate to the surrounding; the detection sensor is used for detecting the combustion state of the mixed gas at the combustor; and the controller is used for adjusting the flow of the fuel gas and the air in the premixing cavity based on a detection result of the detection sensor, so that the combustion state of the mixed fuel gas meets a preset condition. According to the combustion device, the air-fuel ratio of the mixed gas can be accurately controlled according to the actual combustion requirement, and therefore the smoke exhaust heat loss is reduced. Meanwhile, the closed-loop control can inhibit the formation of a local high-temperature area, effectively reduce the NOx emission and meet the ultralow emission standard.

The invention discloses an electronic injection fuel injection strategy intelligent optimization method based on deep learning, and the method comprises the following steps: S1, collecting and preprocessing multi-source working condition data of an engine, and generating a standard data set; s2, constructing a Bayesian neural network model, and outputting an integrated fuel injection parameter prediction value and an uncertainty estimation value; s3, optimizing model structure parameters and hyper-parameters by using an ant lion optimization algorithm to obtain an optimal structure and parameters; s4, training the model by using the optimal structure and parameters, and performing performance evaluation by using a standard data set; s5, collecting working condition data in real time, and outputting an optimal integrated fuel injection parameter prediction value and an uncertainty estimation value; and S6, periodically collecting feedback data, training the model in combination with the standard data set increment, and re-executing ant lion optimization in good time. According to the method, high-precision intelligent optimization of the oil injection strategy of the engine is achieved, the fuel economy is improved, emission is reduced, and the self-adaptive capacity under the complex working condition is enhanced.

The invention discloses a strong premixing combustion chamber for restraining combustion noise based on a Helmholtz resonant cavity, and relates to the technical field of energy and power. Air and fuel enter the mixing cavity through corresponding connectors to be strongly premixed, premixed gas enters the hearth to be combusted through slit channels among water cooling channel branch pipes, a water cooling channel array can prevent backfire, the Helmholtz resonant cavity is connected with the hearth through a cavity neck and is provided with an air film cooling channel, the size of the Helmholtz resonant cavity needs to measure combustion noise, and a frequency spectrum is analyzed to obtain characteristic frequency. The neck length, the cross section area and the resonant cavity volume are calculated according to a Helmholtz resonance formula, and the sound absorption effect is verified in combination with a low-order thermoacoustic model. Combustion efficiency is improved through the strong premixing and slit water cooling design, tempering is prevented, NOx is reduced, the diffusion combustion problem is solved, the targeted design resonant cavity is matched with air film cooling, the defects that an existing silencing structure is large in size, poor in adaptation and low in high-temperature reliability are overcome, complex active control is not needed, cost is low, applicability is high, and the application range is wide. And cooperative control of high efficiency, low emission and unstable combustion is realized.