1012 results about "Low emission" patented technology

The invention discloses an energy equipment carbon emission scheduling optimization method in an integrated energy system, and the method comprises the steps: determining an energy equipment carbon emission factor, constructing a carbon emission cost function, employing Monte Carlo simulation to generate a carbon transaction price fluctuation scene, and carrying out the carbon transaction price fluctuation scene. The method comprises the following steps: calculating a carbon transaction risk index of equipment in each scene according to a cost function, determining start-stop time by economic benefit optimization, constructing a comprehensive energy system topology network structure, updating a carbon flow path set according to the start-stop time, calculating a comprehensive carbon emission coefficient, establishing an energy flow and carbon flow coupling model between a high emission path and a low emission path, and constructing a comprehensive energy system topology network structure. A scheduling strategy feasible space is obtained through a cooperation strategy, and an optimal cooperation scheduling operation strategy is obtained through optimization of a particle swarm algorithm by taking the minimum carbon emission as a target. The method can effectively reduce the carbon emission / optimize the start and stop of the equipment, improves the economical efficiency and environmental protection property of system operation, achieves the dual goals of energy conservation and emission reduction and benefit improvement, and has good interpretability at the same time.

The invention discloses a boiler combustion strategy optimization method, system, equipment and medium, and relates to the technical field of combustion strategy optimization, and the method comprises the steps: employing a width-adaptive triangular convolutional neural network to establish a prediction model of boiler thermal efficiency, NOx emission and superheated steam temperature; constructing a boiler multi-target combustion optimization intelligent agent, and introducing a maximum entropy parameter to obtain all boiler combustion optimal strategies as a target, and obtaining any strategy of which the value is higher than a threshold value; and based on the combustion strategy, outputting a next state through the trained prediction model, obtaining a reward corresponding to the current state, and performing iterative optimization on the boiler multi-target combustion optimization agent according to the current state, the combustion strategy, the next state and the reward corresponding to the current state. And taking the combustion strategy until the optimal reward is obtained as the optimal boiler combustion strategy. On the premise of guaranteeing the stability of the hot steam temperature, the effects of reducing the emission concentration and guaranteeing the stability of the heat efficiency of the boiler are achieved.

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 relates to a clean energy combustion technology, and aims to provide a rotational flow on-duty multi-element micro-mixing coupling type low-nitrogen combustion device for hydrogen-doped natural gas. Comprising an air cooling cavity, an air bin fixing cavity and a gas bin fixing cavity which are sequentially stacked from top to bottom. An on-duty combustion unit of a sleeve structure is arranged in the center of the burner in a penetrating mode, and micro-mixing combustion units, independent air bins and independent fuel gas bins are evenly arranged in the circumferential direction in a surrounding mode. A plurality of micro-mixing spray pipes are arranged in an air cooling sleeve of the micro-mixing combustion unit in the axial direction in an array mode, and fuel spray pipes are arranged on a second fixed disc in the axial direction in an array mode. The closed end of the fuel spray pipe extends into the micro-mixing spray pipe corresponding to the fuel spray pipe, and a fuel gas inlet is formed in the bottom of the fuel gas bin fixing cavity. After external air is introduced through an air circulation path from top to bottom to cool the head of the combustor, the heated air is mixed with fuel for combustion, and safe, efficient and low-emission application of natural gas large-proportion hydrogen-doped fuel is achieved.

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 relates to the technical field of transportation, in particular to a vehicle emission anomaly detection and tracing method and device and electronic equipment, and the method comprises the steps: inputting a current operation condition and current operation data into a dynamic threshold model to obtain a first detection result, and inputting the first detection result into an emission prediction model to obtain a second detection result; fusing the first detection result and the second detection result to obtain a final detection result when the first detection result and the second detection result do not meet a preset vehicle emission abnormal judgment condition, judging that the vehicle emission is abnormal when the final detection result is greater than or equal to a preset threshold value, and judging that the vehicle emission is abnormal based on a vehicle emission abnormal knowledge graph database. And a Cosine similarity calculation strategy is utilized to obtain reasons and probabilities of abnormal emission. The problems that a traditional vehicle emission anomaly detection and tracing method is low in emission anomaly detection efficiency, high in misjudgment rate and difficult in tracing are solved, accurate detection of emission anomaly is achieved, closed-loop management from anomaly triggering to root cause tracing is completed, and operation and maintenance intelligence is improved.

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 utility model relates to the technical field of bag-type dust collectors, and discloses a low-emission environment-friendly pulse-jet bag-type dust collector, which comprises a dust collector body, and an ash bucket is fixedly mounted at the bottom of the dust collector body. According to the low-emission environment-friendly pulse-jet cloth bag type dust collector, the filter bag in the dust collector body is in a state that no airflow passes through, then the pulse device is started to carry out pulse-jet dust removal by using compressed air, and the closing time of the exhaust pipe is enough to ensure that dust stripped from the filter bag settles to the dust hopper after the dust is jetted; the phenomenon that dust is attached to the surface of an adjacent filter bag along with airflow after being separated from the surface of the filter bag is avoided, dust cleaning of the filter bag is thorough, the dust is cleaned by arranging a driving device, a first rotating shaft and a cleaning plate, the dust can continuously reach a collecting box, the dust is prevented from being attached to the inner wall of a dust hopper, accumulation is avoided, and the service life of the filter bag is prolonged. Furthermore, the dust emission concentration can be obviously reduced, and the pollution to the environment is reduced.

The invention relates to the technical field of energy conservation and environmental protection, in particular to an industrial boiler combustion oscillation modal suppression system and a method thereof, and constructs a system which is highly intelligent, high in adaptability and remarkable in suppression effect by fusing innovative technologies such as multi-dimensional perception, intelligent identification, active suppression and adaptive optimization. The data acquisition module accurately captures hearth temperature, flame video and sound pressure signals; the signal processing module deeply analyzes and extracts oscillation modes of a temperature field and a flame area, and analyzes a sound pressure signal frequency spectrum through short-time Fourier transform; the mode identification module accurately identifies the combustion oscillation mode and determines the characteristic frequency and amplitude of the combustion oscillation mode; the suppression control module generates an infrasonic wave intervention signal to form an anti-phase sound field so as to effectively suppress oscillation; the fuel adjusting module adjusts the opening time sequence of the gas nozzle according to the instruction, and fuel supply is optimized. According to the system, the operation stability and heat efficiency of the boiler are remarkably improved, NOx emission is greatly reduced, and powerful technical support is provided for clean and efficient operation of the industrial boiler.

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 utility model discloses an ultralow emission wet dust collector which comprises a dust collector body, a dust gas inlet and a purified gas outlet, the upper part of the dust collector body is provided with a filter component, the lower part of the dust collector body is provided with a pollution discharge component, the dust gas inlet is arranged in the middle of the dust collector body, the purified gas outlet is arranged at the tail end of the filter component, and a fan is arranged at the purified gas outlet. A dust blocking plate is arranged at the dust gas inlet and used for blocking dust particles in dust-containing air, the pollution discharge assembly comprises a water inlet valve and a pollution discharge valve, the water inlet valve and the pollution discharge valve are installed on the two sides of the dust remover body respectively, the filtering assembly comprises a filter and a blowing assembly, the filter is installed in the dust remover body, and the blowing assembly is installed above the filter. The dust remover not only overcomes the problems that a bag-type dust remover is not thorough in dust removal and easy to paste a bag, but also solves the problem that the emission of a multi-tube wet dust remover does not reach the standard, and has the characteristics of simplicity in operation and maintenance, small water consumption, low maintenance cost, small occupied area, long service life and the like.

The invention discloses a low-calorific-value associated gas ultralow-nitrogen flameless combustion system, which relates to the technical field of combustion control and comprises a gas acquisition module, a premixing control module, a low-calorific-value gas pre-mixing module, a low-calorific-value gas pre-mixing module and a low-calorific-value gas pre-mixing module, multivariable cooperative control is adopted to adjust the mixing proportion of the low-heating-value gas with the stable pressure and the air, and premixed gas with the stable flow is obtained; according to the ultralow-nitrogen flameless combustion system for the low-heating-value associated gas, the combustion process is adjusted through a recirculation channel and dynamic power distribution, combustion state data are collected through a flame probe and a temperature sensor, airflow distribution of the porous ceramic combustor is adjusted according to the data, and finally stable combustion output is achieved. The method can effectively improve the combustion efficiency and stability of the low-heating-value gas and reduce emission, and is suitable for efficient and clean utilization of the low-heating-value gas such as industrial waste gas.

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 an intelligent fire coal scheduling system for a thermal power plant, which integrates coal type adaptability prediction, intelligent coal blending and coaling decision, real-time data verification and compensation and boiler combustion optimization feedback, and realizes intelligent management and scheduling of fire coal. The system comprises a stacker-reclaimer unit, a coal conveying unit, a coal bunker unit, a boiler unit and a plurality of sensors. The coal type adaptability prediction module analyzes coal quality parameters and boiler operation data based on a support vector machine model, and generates a coal type adaptability score. And the intelligent coal blending and coaling decision-making module adopts a non-dominated sorting multi-target genetic algorithm to generate a blending combustion proportion and dynamically adjust a coaling sequence. And the real-time data verification and compensation module verifies data and compensates abnormity by using a Kalman filtering algorithm. The boiler combustion optimization feedback module monitors the combustion efficiency and emission of the boiler, automatically adjusts the blending combustion proportion, and ensures efficient and low-emission operation of the boiler. The system improves the safety, economical efficiency and environmental protection property of fire coal blending combustion, and is suitable for operation under complex working conditions of a thermal power plant.

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 utility model belongs to the technical field of material transportation, and particularly relates to a low-emission material conveying device. The technology comprises a horizontally arranged belt conveyor, the right end of the belt conveyor is a discharging end, and the left end of the belt conveyor is a feeding end; a hopper used for collecting materials is arranged at the discharging end, three turnabout drums used for redirecting a conveying belt are installed in the return stroke direction of the conveying belt on the belt conveyor, and the three turnabout drums are the first turnabout drum, the second turnabout drum and the third turnabout drum in sequence in the return stroke direction. The first turnabout drum is located below the left of the discharging end, the second turnabout drum is located below the right of the first turnabout drum, the third turnabout drum is located on the left side of the first turnabout drum, and the conveying belt sequentially bypasses the upper surface of the first turnabout drum, the lower surface of the second turnabout drum and the upper surface of the third turnabout drum. According to the design, the structure is simple, and bulk materials generated in the material conveying process can be effectively recycled.

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.

The invention relates to low-density steel based on short-process hot galvanizing and a preparation method of the low-density steel. The steel comprises the following chemical components in percentage by mass: 0.05%-0.13% of C, 0.4%-0.9% of Si, 0.6%-1.2% of Mn, less than or equal to 0.02% of P, less than or equal to 0.03% of S, 3.0%-6.0% of Al, 0.012%-0.052% of Ti, 0.0012%-0.0042% of N and the balance of Fe and inevitable impurities. The production process has the advantages that the production process of converter or electric furnace smelting, medium and thin slab continuous casting and rolling, acid pickling, cold rolling, nickel plating and hot galvanizing is adopted, the hot-galvanized low-density steel with the yield strength of 330-500 MPa, the tensile strength of 590-700 MPa and the elongation rate of 25%-35% is produced, and the hot-galvanized low-density steel has the advantages of being low in density, high in formability, low in emission and high in surface quality.

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.