423 results about "Alternative fuels" patented technology

The invention provides a cement decomposing furnace temperature prediction control method based on a KAN enhanced neural network, and belongs to the technical field of cement calcination. A CNN-LSTM-KAN network is established as an f-CaO and Nox prediction model, and a state parameter optimization objective function is established in connection with actual production requirements; and solving an optimal solution and an optimal solution interval of the state parameters of the decomposition furnace through a multi-target particle swarm optimization algorithm. A KAN-Enhanced-Informer network is established to predict the temperature of the decomposition furnace, a target function is established by combining a state optimization result with the more accurate prediction result, the less coal consumption and the reasonable alternative fuel quantity as targets, the optimal solutions of the coal feeding quantity and the alternative fuel quantity are obtained, and the optimal solutions are applied to a control model to ensure that the temperature of the decomposition furnace reaches the optimal set value. The problems that in the actual cement production process, energy consumption is too high, the yield is not ideal, and much sewage is discharged are solved.

The invention relates to the technical field of machine learning, and discloses a cement kiln alternative fuel consumption prediction method and system based on machine learning. The method comprises the following steps: processing alternative fuel characteristic parameters in a cement kiln system and kiln system operation parameters to obtain a cement kiln multi-source data set; performing thermal analysis test on the alternative fuel sample to obtain an alternative fuel combustion characteristic parameter set; analyzing the dynamic association relationship between the kiln system working condition and the alternative fuel characteristics to obtain a working condition adaptability parameter set; extracting a combustion time-space feature set consumed by the alternative fuel of the cement kiln; performing multi-model parallel processing and prediction result fusion on the combustion space-time feature set to obtain first prediction data; and executing adaptive error correction, and outputting second prediction data and a fuel adjustment suggestion. According to the method, the complex non-linear relation and the time-lag effect between the kiln system working condition and the alternative fuel characteristics are effectively captured, and accurate prediction and optimal control over the alternative fuel consumption are achieved.

This invention concerns a fuel delivery system for an aircraft engine, comprising a fuel delivery regulator configured to receive fuel from a plurality of fuel sources for supply to the engine. An engine operating condition sensor reading is received by a control unit configured to control operation of the regulator. The control unit is configured to actuate the regulator based on a received signal from the engine operating condition sensor in order to vary the volume of fuels from the plurality of fuel sources supplied to the engine during at least a portion of a cruise phase relative to a further portion of an aircraft flight. The different fuels may comprise kerosene and an alternative fuel, such as a biofuel.

The utility model belongs to the technical field of cement kiln hazardous waste co-processing, and particularly relates to a cement kiln alternative fuel incinerator. A cement kiln alternative fuel incinerator comprises an incinerator body, a blanking platform, a step-shaped combustion platform, a pushing device, a blowing device, a main air inlet, a material inlet and a decomposing furnace connector, the main air inlet, the material inlet and the decomposing furnace connector are arranged on the incinerator body, a C-shaped air guide plate is fixedly connected to the front end face of the combustion platform, and a plurality of air guide holes are formed in the front end face of the air guide plate. An air guide pipe is fixedly connected to the outer side surface of the furnace body at one end of the air guide plate, the air guide pipe is communicated with an inner cavity of the air guide plate, and tertiary air is introduced into the air guide pipe; the blowing device comprises an air cannon fixedly connected to the outer side of the furnace body and a blowing head communicated with the air cannon and arranged below the air guide plate. The combustion temperature fluctuation in the incinerator can be reduced, and the heating uniformity of alternative fuel can be improved so as to improve the combustion efficiency of the alternative fuel.

The invention relates to an independent inner and outer needle valve type flexible fuel injector which comprises an injector shell, internally and externally nested needle valve matching parts, an electromagnetic control valve assembly and a double-row injection hole structure, and a diesel oil high-pressure oil way and a low-carbon fuel high-pressure oil way are arranged in the injector shell; the electromagnetic control valve assembly is arranged in the upper portion of the ejector shell, independently controls diesel oil injection and is of a hydraulic balance valve structure. Needle valve matching parts nested inside and outside are installed at the bottom of the ejector shell and connected with the electromagnetic control valve assembly through a spring guide sleeve, a limiting block and a middle rod. A double-row spray hole structure is arranged at the bottom of the internally and externally nested needle valve matching part; the inerting valve set is connected to the low-carbon fuel high-pressure oil way and used for purging and inerting during fuel switching. By means of the nesting needle valve, the diesel oil lubrication seal, the independent control valve and the inerting design, efficient and stable dual-fuel injection is achieved, the problem of mixing in the prior art is solved, the service life of the injector is prolonged, and the dual-fuel injector is suitable for ship engines with alternative fuel such as methanol / ammonia.

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 belongs to the technical field of energy conservation and environmental protection, and discloses a cement kiln system for coupling oxygen enrichment and staged combustion by using alternative fuel in a large proportion, which comprises a circulating fluidized bed system, a decomposing furnace, a rotary kiln and a grate cooler, the kiln tail of the rotary kiln is connected with the bottom of the decomposing furnace, a bottom gasified gas spraying pipe is arranged between a kiln tail smoke chamber of the cement kiln and a coal spraying pipe of the conical part, and an upper gasified gas spraying pipe is arranged on the upper portion of the middle section of the decomposing furnace; the bottom gasified gas spray pipe and the upper gasified gas spray pipe are both connected to a gasified gas outlet of the circulating fluidized bed system; and a semi-gasified gas spray pipe is arranged at the upper part of the lower section of the decomposing furnace and is connected to a semi-gasified gas outlet of the circulating fluidized bed system. The disposal amount of the alternative fuel can replace 50% of pulverized coal in the decomposing furnace, and the requirement for using the alternative fuel in a large proportion is met.

The invention discloses a construction waste treatment system and method based on cement kiln co-processing, the system comprises a construction waste treatment system, a light substance crushing system, an alternative fuel conveying treatment system, a raw material conveying system and a cement production system, and the system is provided with two construction waste feed ports, so that decoration waste can be treated, and the construction waste can be recycled. The garbage can be demounted, and the adaptability is wide; according to the construction waste treatment system, the construction waste is thoroughly treated by fully utilizing the characteristics of cement production, no waste is discharged, the construction waste is treated into aggregate, powder and light substances through the construction waste treatment system and the light substance crushing system, and the generated aggregate and powder can be used as raw materials for cement production; produced light substances are used as alternative fuel for cement production, so that the resource recycling rate is greatly increased, and the cement production cost is reduced; and meanwhile, the system can reduce the consumption of fossil fuel and obviously reduce carbon emission.

The invention relates to the technical field of alternative fuel storage, and discloses an alternative fuel storage and feeding device which comprises a storage bin body, a conveying mechanism, a disintegration material taking mechanism, a monitoring scale, a material level radar and a controller. A feeding port and a discharging port are formed in the two ends of the opposite top and bottom of the storage bin body, an opening is formed in the bottom of the storage bin body, the top of the conveying mechanism is in matched sealing connection with the opening of the storage bin body, the disintegration material taking mechanism is fixedly connected to the other end of the storage bin body, and the monitoring scale is arranged on the discharging port. The material level radar is arranged in the middle of the top of the storage bin body, and the controller is electrically connected with various mechanisms. The storage feeding device conveys materials through the conveyor, the scattering and material taking device is arranged to scatter the materials, the controller is arranged to process various information, monitored by the monitoring scale and the material level radar, of the materials, the material conveying speed and volume are corrected, the stability and accuracy of discharging metering are improved, and reasonable use of alternative fuel is guaranteed.

A vehicle provided with a frame (1) comprising two side members (2, 3) connected together at least by a cross member (4), an alternative fuel module (6) and a support system (5) connected to the frame (1) for supporting the alternative fuel module (6), the support system (5) comprising at least a first support element (7) and a second support element (8), both being configured to be fixedly connected to the alternative fuel module (6) via coupling portion (11, 9b′), the coupling portion (9b′) of the second support element (8) being connected to both the side members (2, 3) and the coupling portion (11) of the first support element (7) being connected to the cross member (4) via a movable connection.

An ignition diagnostic system and method for evaluating and optimizing the ignition performance of internal combustion engines (ICEs), such as those that burn hydrogen (H2) and / or other fuels. According to one example, the ignition diagnostic system and method use an artificial intelligence (AI) model with one or more machine learning (ML) algorithm(s) to identify, predict and / or otherwise evaluate abnormal combustion events, and to provide such information to an electronic control unit (ECU) in real-time. The ECU, in turn, can make combustion-related modifications to one or more components of the ignition system to optimize performance. By integrating the AI model into the ignition diagnostic system and method, a fast and simplified solution is provided that can be implemented across a wide variety of ICEs, including those that burn alternative fuels, where detecting abnormal combustion events and monitoring combustion-related parameters can be important.

This invention concerns a fuel delivery system for an aircraft engine, comprising a fuel delivery regulator configured to receive fuel from a plurality of fuel sources for supply to the engine. An engine operating condition sensor reading is received by a control unit configured to control operation of the regulator. The control unit is configured to actuate the regulator based on a received signal from the engine operating condition sensor in order to vary the volume of fuels from the plurality of fuel sources supplied to the engine during at least a portion of a cruise phase relative to a further portion of an aircraft flight. The different fuels may comprise kerosene and an alternative fuel, such as a biofuel.

METHOD, APPARATUS, COMPUTER DEVICE AND STORAGE MEDIUM FOR DETERMINING ALTERNATIVE FUELS The present invention relates to a method, device, computer device and storage medium for determining an alternative fuel, the method comprising: obtaining a target fuel corresponding to a target cement kiln and a plurality of alternative component categories, property parameters, a maximum carrying capacity of an alternative fuel combination to be selected, as well as a fuel boundary condition, constructing an objective function and a constraint condition; Based on the objective function and the constraint conditions, calculating the initial alternative fuel combination ratio solution for each alternative fuel combination to be selected;using a non-dominated sequential genetic algorithm to optimize the initial alternative fuel combination ratio solution, and calculating the theoretical substitution ratio of each optimized alternative fuel combination; based on the theoretical substitution ratio, selecting a fuel combination from a plurality of alternative fuel combinations to be selected. Based on the theoretical substitution ratio, determining the alternative fuel component scheme corresponding to the target fuel from among the alternative fuel combinations to be selected. The invention solves the problem of fluctuation of working conditions in cement kilns due to the complexity of the composition of alternative fuels, and improves the accuracy and reliability of determining alternative fuels. Figure for abstract: none;

An engine can utilize a combustor to combust fuel to drive the engine. A fuel nozzle assembly can supply fuel to the combustor for combustion or ignition of the fuel. The fuel nozzle assembly can include a swirler and a fuel nozzle to supply a mixture of fuel and air for combustion. Increasing efficiency and meeting emission needs can be met with the use of alternative fuels, which combust at higher temperatures or higher speeds than traditional fuels, requiring improved fuel introduction without the occurrence of flame holding or flashback.

An artificial intelligence fuel management system and method that facilitates optimizing fuel management and vehicle service times for a variety of vehicle types through determining the remaining trip range for a vehicle and providing optimal routing and vehicle fueling options for a trip route involving autonomous vehicles, vehicle platoon management, and / or vehicular fuel management systems. The associated vehicles are fueled by at least one of a liquid fuel and an alternative fuel. The liquid fuel is either gasoline or diesel, and the alternative fuel is either electricity, bio-fuel, bio-alcohol, synthetic and paraffinic, steam, heat, vegetable and waste-derived oils, compressed air, liquid nitrogen, liquid petroleum gas, propane, hydrogen, ethanol, methanol, butanol, or natural gas.

An alternative fuel vertical pre-combustion furnace comprises a vertical combustion chamber furnace body, a multi-stage stepped furnace hearth arranged on the side wall of the pre-combustion furnace body and a pneumatic pulse injection device arranged on the furnace hearth, and castable is arranged on the inner wall of the whole furnace body. Light flammable substances are completely incinerated under the driving of high-speed airflow, heavier flame-retardant substances fall into the next step to be continuously incinerated, the burn-off rate of the alternative fuel is greatly improved after the alternative fuel stays, is scattered and is pre-combusted, and completely-combusted material residues are dispersed by strong injection of compressed air of an air cannon system; therefore, the influence on the cement kiln caused by sedimentation of the material slag agglomerated in the decomposing furnace is solved. And materials on the uppermost combustion platform sequentially slide to the second-stage combustion step platform and then slide to the next-stage combustion platform layer by layer, and the process is repeated. And waste gas and ash after incineration are discharged from the bottom of the pre-combustion furnace and enter a kiln tail decomposing furnace system, when the material slag is harmful to the kiln system, the material slag can be discharged, and high-temperature airflow enters the decomposing furnace.

The invention discloses a coupling low-carbon combustion process device and an adjusting method thereof, and relates to the field of coupling low-carbon combustion process devices, the coupling low-carbon combustion process device comprises a fuel supply system, an oxygen-enriched / total-oxygen supply system, an air supply system, a flue gas circulation system, a fuel combustion system and a flue gas treatment system; the fuel supply system is used for providing solid-phase fuel, liquid-phase fuel and gas-phase fuel; the oxygen-enriched / total-oxygen supply system is combined with the air supply system and used for changing the combustion atmosphere in the combustion furnace and achieving fuel oxygen-enriched / total-oxygen combustion. The flue gas treatment system comprises a two-stage heat exchanger, a cooling tower and a dust collector; the fuel combustion system is composed of a combustion furnace, an online flue gas analyzer and a temperature, pressure and flow detection device. According to the invention, the synergistic effect among different processes is realized, so that the defect of single process application of the existing platform is effectively overcome, a new solution is provided for low-carbon, high-efficiency and clean industrial combustion process, and multiple low-carbon combustion processes such as alternative fuel combustion, oxygen-enriched / oxygen-full combustion, flue gas circulation and the like are organically coupled.

The invention relates to all-solid-waste high-alkalinity sintered ore and a preparation method, and belongs to the technical field of sintering. The sintered ore comprises the following raw materials in parts by weight: 65-75 parts of high-iron solid waste, 8-13 parts of high-carbon solid waste, 10-15 parts of high-calcium solid waste and 8-12 parts of water. Complementation is realized by mixing different solid waste types, the iron source is provided by the high-iron solid waste, the fuel is replaced by the high-carbon solid waste, the alkalinity is adjusted by the high-calcium solid waste, the prepared sintered ore can meet the steelmaking requirement, and the comprehensive utilization rate of the metallurgical solid waste is greatly increased.

A process and system for producing an engineered fuel product that meets customer specifications for composition and combustion characteristics is provided. The engineered fuel product is preferably a high-BTU, alternative fuel that burns cleaner than coal or petroleum coke (petcoke) and has significantly reduced NOx, SO2 and GHG emissions.

The present invention relates to the technical field of alternative fuel in the cement industry. Disclosed is a high-proportion alternative fuel pre-treatment and cement kiln incineration system, comprising a stacking shed, a storage system, a rotary kiln, a pulverized coal burner, a cooler, a tertiary air duct and a preheated raw-material preheater; and further comprising a crushing system, a homogenization system, metering systems, conveying systems, gravity-type feeding systems, a multifunctional decomposition furnace, a special combustor for alternative fuel, and a pneumatic conveying system. In the present invention, the particle size of crushed alternative fuel is controlled on the basis of a flue gas suspension speed, such that the alternative fuel combusts in a suspended manner in the multifunctional decomposition furnace; the alternative fuel is metered by means of the three metering systems, and the alternative fuel in one path is fed into the special combustor; the special combustor and the pulverized coal combustor are arranged one above the other in the rotary kiln, and pulverized coal combustion is used to drive the combustion of the alternative fuel; and the gravity-type feeding systems and their respective two airlock discharge valves, which are alternately opened, are used to feed in the alternative fuel, thereby reducing air leakage during a feeding process.

A turbine engine can utilize a combustor to combust fuel to drive the turbine, which drives the engine. A fuel nozzle assembly can supply fuel to the combustor for combustion or ignition of the fuel. The fuel nozzle assembly can include a swirler and a fuel nozzle to supply a mixture of fuel and air for combustion. Increasing efficiency and carbon-containing emission needs benefit from the use of alternative fuels, which combust at higher temperatures than traditional fuels, requiring improved fuel introduction without the occurrence of flame holding or flashback.

The invention relates to the technical field of stepped furnaces, in particular to a mixed biomass energy-saving combustion stepped furnace which comprises a stepped furnace body and a feeding area, a conveying pipe is arranged in the feeding area, a driving assembly and a transmission assembly are arranged at the right end of the stepped furnace body, and a material frame a, a material frame b and a material frame c are sequentially arranged on the conveying pipe from left to right. A material roller a, a material roller b and a material roller c are rotatably arranged in the material frame a, the material frame b and the material frame c correspondingly, lifting assemblies are slidably arranged on the material frame a and the material frame c correspondingly, a driving assembly drives the material roller a, the material roller b and the material roller c to rotate through gear meshing, and coal and bamboo scraps in the material roller a, the material roller b and the material roller c are sucked into a material conveying pipe to be mixed through the negative pressure effect. The lifting assembly is driven by the transmission assembly to dredge coal in the material roller a and the material roller c, and the coal and bamboo sawdust in the material conveying pipe are blown into the stepped furnace through the air blower to be combusted. The problem of insufficient combustion heat supply caused by different feeding proportions of alternative fuels is solved.

The utility model discloses an alternative fuel feeding device for a cement kiln, and relates to the technical field of cement production. The discharging device comprises a supporting frame, a discharging hopper is fixedly installed at one end of the supporting frame, a discharging opening is formed in the bottom end of the discharging hopper, an auxiliary discharging assembly is installed in the discharging hopper, a conveyor is rotatably installed in the supporting frame and is a plate chain type conveyor, and baffles are rotatably installed on the two sides of the supporting frame. The bottom ends of the two baffles are fixedly provided with fixing shafts, the fixing shafts are rotationally installed on the supporting frame, the sides, close to each other, of the two baffles are each rotationally provided with a plurality of rotating rollers distributed at equal intervals, and the two sides of the supporting frame are each provided with an adjusting assembly. According to the technical scheme, it can be guaranteed that equipment has a certain stored material buffering function, meanwhile, materials can be prevented from overflowing, and the inclination degree of the baffle can be adjusted through the adjusting assembly according to actual needs so that the material storage space of the conveyor can be widened.

The utility model discloses an alternative fuel vortex gasification device. The device comprises a vortex gasification section, a suspension section, a fluidized bed section and an air chamber section which are communicated with one another, the vortex gasification section is provided with an air inlet pipeline communicated with high-temperature flue gas, and the top of the suspension section is provided with a flue gas outlet and a flue gas delivery pipeline; and an alternative fuel feeding port, a difficult fuel feeding port, a bed material feeding port and a slag outlet are further formed. High-temperature flue gas is introduced in a vortex mode, alternative fuel is in a suspended state and is high in gasification temperature and low in oxygen content, heat and mass transfer between the alternative fuel and the high-temperature gas is facilitated, stable pyrolysis gasification of the alternative fuel is maintained, generated high-temperature combustible gas and carbon-containing fly ash are more prone to combustion, fluctuation influence on follow-up combustion equipment is small, and energy is saved. And meanwhile, the adopted air-fuel ratio is small, cold air brought by the system is small, the heat value of combustible gas is high, and the device has higher heat efficiency.

The present invention belongs to the technical field of efficient utilization of clean, low-carbon energy using solid waste to prepare renewable energy, and specifically relates to an integrated apparatus for coal-fired kiln raw material fuel alternative dechlorination, denitrification, and coordinated solid waste treatment, comprising: a continuous rotary arch-breaking boiling gasification furnace apparatus, a secondary combustion and gas-solid separation apparatus, a circulating cooling apparatus and a control system. During a shutdown period of a cement kiln, a solid waste alternative fuel is in an aerobic full combustion working state, and a residue produced after combustion can be used as a mixed material for cement production or a raw material for cement clinker production. When a solid waste alternative fuel is burned in an oxygen-free or oxygen-poor reduction process, a high-temperature combustible gas having reducing properties is generated. The high-temperature combustible gas enters a cement kiln decomposition furnace and a pre-decomposition system, decreasing the generation of nitrogen oxides in the cement kiln decomposition furnace and pre-decomposition system. At the same time, the reducing atmosphere can be burned in the cement kiln system to generate heat, which can reduce the amount of coal used.

The embodiment of the invention discloses an alternative fuel sail-aided hybrid power ship emission optimization control system and method, and the method comprises the steps: forming a CO2 emission spatial and temporal distribution characteristic mapping table through an emission characteristic analysis unit, and solving a constructed CO2 emission optimization model through an emission optimization decision unit by employing an NSGA-III optimization algorithm, obtaining an optimization result corresponding to the lowest CO2 emission of the alternative fuel sail-aided hybrid power ship; the CO2 emission level corresponding to the optimized operation scheme of the alternative fuel sail-aided hybrid power ship is evaluated and analyzed through an emission optimization evaluation unit; meanwhile, collaborative optimization control over the alternative fuel sail-aided navigation hybrid power ship is achieved through the CO2 emission optimization control unit, and then optimization control over the alternative fuel sail-aided navigation hybrid power ship with the lowest CO2 emission is achieved.

The invention relates to the technical field of cement mine digital mining engineering, and discloses a cement production line carbon emission data cross coupling verification method, which comprises a carbon emission online monitoring module A1, a carbon emission online accounting module A2 and a big data cross coupling model A3, the carbon emission on-line monitoring module A1 is a carbon emission on-line monitoring system mounted at a pollution source discharge port at the kiln tail of a cement production line; the carbon emission online monitoring system comprises automatic monitoring of flue gas CO2 concentration, flue gas flow rate, flue gas humidity, flue gas temperature and flue gas pressure parameters and real-time carbon emission obtained through calculation of the automatic monitoring parameters. According to the invention, cross checking and data coupling can be carried out on the carbon emission data obtained by the two methods through a big data model, a universal automatic monitoring technology and the accounting business of a cement production line are fused, the influence of alternative fuel on the monitoring of the carbon emission in the cement industry is solved, and the effective connection of an accounting method and online monitoring is realized.

The invention discloses a clay activation process coupling oxygen-fuel combustion and suspension calcination, and relates to the technical field of cement raw material treatment. The invention relates to a clay activation process for coupling oxygen-fuel combustion and suspension calcination, which is characterized in that smoke of oxygen-fuel combustion is used as combustion gas, so that the heat loss of heating low-temperature air is avoided, the oxygen content in the smoke can be controlled, the combustion effect of alternative fuel is improved, and the reducing atmosphere is maintained; meanwhile, compared with single suspension calcined clay, oxygen-free environment cooling and reducing atmosphere calcination are achieved under the condition that additional means are not added, the use of alternative fuel can be further improved, tail end smoke can return to an oxygen-fuel combustion production line and enter a carbon capture system, and production of zero-carbon calcined clay is truly achieved; the problem of high carbon emission in traditional cement production is solved while optimal allocation of resources and efficient utilization of energy are achieved, zero-carbon cement preparation is achieved, carbon emission in the cement industry is remarkably reduced, and the environmental influence is reduced.

The utility model discloses a device for treating alternative fuel by using a cement kiln in the field of alternative fuel application. The device comprises a stock bin, a spiral metering scale, a conveying pipe, a decomposing furnace and a rotary kiln. A dredging anti-blocking device is arranged at the position, close to the tertiary tuyere of the decomposing furnace, of the conveying pipe and comprises a shell, a servo motor, a rotating shaft, a motor gear, a fixed shaft and a dredging rod piece. A servo motor is arranged at the bottom of the left side of the shell, a power output shaft of the servo motor rotationally extends into the shell and is connected with a rotating shaft, and a motor gear is installed at the right end of the rotating shaft. A fixing shaft is installed on the right side in the shell and rotationally provided with a dredging rod piece, and the dredging rod piece is in gear transmission connection with the motor. According to the utility model, dredging and blocking prevention can be carried out in the alternative fuel feeding process, and the feeding efficiency is improved; meanwhile, toxic gas generated by alternative fuel in the feeding process can be absorbed, and environmental pollution is avoided.

The invention provides an alternative fuel roller screening device with an automatic jacking and separating function, and relates to the technical field of alternative fuel screening. The auxiliary conveying mechanism is installed in the supporting assembly. The rotary screening mechanism is mounted at the top of the supporting assembly; the elastic supporting mechanism is mounted in the rotary screening mechanism; the ejection control mechanism is mounted in the rotary screening mechanism; the bottom of the butt joint cleaning mechanism is fixedly connected with the supporting assembly. According to the device, the rolling screen drum can be controlled to be automatically opened and closed, subsequent alternative fuel can be conveniently placed and collected, and time and labor are saved; and fuel conveying can be assisted, the surface of the roller can be automatically cleaned, blockage of screen holes is reduced, and the problems that after materials to be screened are manually added into the roller and screened, regular manual collection is needed, the whole process is tedious, and the labor intensity is large are solved.