50 results about "Waste combustion" patented technology

The invention relates to the technical field of battery waste management and control, in particular to a battery production waste combustion risk intelligent early warning and disposal system. The system comprises a data acquisition module, a risk prediction module, an early warning management module, a disposal management module, a feedback optimization module and a parameter optimization module. The data acquisition module acquires waste multi-source monitoring data within a first preset time period; the risk prediction module trains a combustion risk prediction model accordingly; the early warning management module obtains real-time monitoring data in a second preset time period and executes early warning operation; the disposal management module executes disposal operation in a third preset time period according to the early warning result data; the feedback optimization module optimizes the prediction model in combination with early warning and disposal results; and the parameter optimization module configures an optimization target based on historical data and executes parameter directional optimization. The system can realize comprehensive monitoring, accurate early warning, effective disposal and dynamic optimization of the waste combustion risk.

Disclosed is a method for controlling a sliding speed of a fire grate segment of a waste incinerator, comprising the following steps: acquiring a flame image in a furnace, and determining a flame parameter of the flame image on the basis of the flame image; acquiring a parameter related to soft measurement modeling of a material layer on a fire grate segment, so as to obtain a parameter of the material layer, parameters of the material layer comprising thickness of the material layer, degree of offset between two sides of the material layer, and area of the material layer; inputting the flame parameter and the parameter of the material layer into a parameter fusion model, to generate a waste incineration parameter, and determining the speed of waste combustion on the basis of the waste incineration parameter, the waste incineration parameter being the time required for waste incineration; determining the intensity of waste combustion on the basis of the speed of waste combustion, determining the position of the flame on the fire grate segment on the basis of the intensity of waste combustion, and determining the sliding speed of the fire grate segment on the basis of the position of the flame on the fire grate segment. This resolves the problem in the prior art that it is necessary to manually determine the sliding speed required by a fire grate.

The invention discloses an internal rotation type anti-slagging solid waste efficient combustion / carbonization device and method. The device comprises a feeding system, an air supply system, a combustion / carbonization system and a rotating shaft. The invention provides an internal rotation type rotating shaft with shoveling plates in a furnace, which can effectively prevent solid from slagging in a high-temperature environment. And a gas channel is formed in the rotating shaft, so that contact and mixing of the solid waste and air are further promoted, and meanwhile, the rotating shaft is cooled. Mixing in the gas-solid reaction process is enhanced, growth of ash in the thermochemical process is destroyed, the purposes of improving the waste combustion / carbonization efficiency and preventing slag bonding are achieved, meanwhile, cooling air is introduced into the low-speed rotary stirrer, and contact between fuel and air is promoted while high-temperature cooling of the low-speed rotary stirrer is guaranteed.

The invention relates to the technical field of waste heat destroying, in particular to a waste heat destroying device which comprises a furnace body composed of a lower diameter expanding section and an upper cylindrical section, and a combustion chamber is formed in the lower diameter expanding section and used for combusting and decomposing waste; the center of the top end of the cylindrical section at the upper part is communicated and connected with a feeding pipe, a preheating pipe communicated with the feeding pipe is fixed in the cylindrical section, and a carbonization chamber is formed in the preheating pipe and is used for preheating and carbonizing wastes; the internal space of the furnace body is divided into four functional areas through the preheating pipe and the partition pipe, namely the combustion chamber, the carbonization chamber, the flue gas channel and the particle settling cavity, flue gas generated by the combustion chamber sequentially flows through the flue gas channel and the particle settling cavity and is finally discharged through the gas outlet pipe, and based on a flue dust turning-back mechanism arranged in the flue gas channel, the flue gas can be fully combusted through the forced baffling effect. Large-particle fly ash collides with the wall surface and then falls to the bottom of the combustion chamber for re-combustion, so that an upward path of smoke dust is effectively blocked.

An optical diagnosis system for ignition of single-particle excavate waste includes: an excavate waste combustion device, an excavate waste feeding device, an oxidant supply device, a flow monitoring device, an observation device and a flue gas analysis device. The excavate waste feeding device cooperates with the excavate waste combustion device, the oxidant supply device is connected to the excavate waste combustion device via the flow monitoring device, the flue gas analysis device is connected to the excavate waste combustion device, and the observation device cooperates with the excavate waste combustion device. Excavate waste particles are automatically conveyed by a slide rail bracket, and particles are prevented from falling off due to thermal expansion by adopting a hoisting tray. A flow stabilizing plate is added at a bottom of the combustion device, and the captured image is processed to achieve high-precision judgment of the ignition moment.

The present invention belongs to the technical field of the incinerator equipment, and particularly relates to a small-scale domestic waste incinerator and a using method thereof. The incinerator includes a drying pyrolysis chamber and a combustion chamber arranged over a grate assembly of the waste incinerator, a secondary combustion chamber is in communication with the upper portion of the combustion chamber, a position in proximity to the upper portion of the combustion chamber is provided with a pyrolysis gas nozzle, a drying pyrolysis chamber outlet flue duct with an induced draft fan is installed at a position in proximity to the upper end of the drying pyrolysis chamber, the drying pyrolysis chamber outlet flue duct is in connection with a pyrolysis gas nozzle through a condenser, a diversion chamber is situated between the same side of the combustion chamber and the secondary combustion chamber and the drying pyrolysis chamber, and the drying pyrolysis chamber is longitudinally provided with a flue gas nozzle, which is in communication with the diversion chamber. A secondary combustion chamber outlet flue and a circulating flue are arranged at the top of the secondary combustion chamber, the circulating flue is in communication with the diversion chamber, and a guide plate configured to regulate the quantity of the flue gas is arranged at the top of the secondary combustion chamber. In the present invention, the moisture content of the waste entering the incinerator is reduced, the heat value for the waste is increased, so that the requirement of 850 °C for at least 2 seconds in the incinerator can be satisfied without supplementing fuel, and the homogenization of the waste is completed before entering the furnace, which ensures that the temperature and the load fluctuation of the incinerator is relative little, the waste combustion is sufficient, and the ignition loss of the slags is low.

This invention discloses a waste combustion heat recovery device and its usage method, including a base plate, a first water tank, a combustion furnace, a plate heat exchanger, a second water tank, and a flue gas purifier. The first water tank is fixedly installed on one side of the upper surface of the base plate. This invention has the advantages of continuously recovering and utilizing the heat energy generated by the combustion of waste in the waste incinerator through the cooperation of the first water tank, the combustion furnace, the plate heat exchanger, the second water tank, the connecting components, the flue gas purifier, the exhaust pipe, the second water pipe, and the third water pipe. In addition, the waste incinerator can be intermittently fed into the waste incinerator through the feeding component during use, avoiding excessive compression of waste inside the waste incinerator, which would cause incomplete combustion of waste inside the waste incinerator. Furthermore, the waste incinerator can be scraped off the accumulated ash inside the waste incinerator through the ash scraping component after use.

The utility model discloses photovoltaic new energy straw mulching film garbage combustion environment-friendly equipment which comprises combustion equipment, a dust collection cover, a cyclone dust collector, a chimney and a photovoltaic panel. The dust collection cover is integrally mounted at the upper end of the combustion equipment, a smoke outlet pipe at the upper end of the dust collection cover is communicated with the induced draft fan and is communicated with the cyclone dust collector through the induced draft fan, and the cyclone dust collector is communicated with the chimney; the photovoltaic panel is connected with a corresponding photovoltaic power generation system to realize photovoltaic power supply for the combustion environment-friendly equipment; a combustion cavity in which a large amount of air participates twice is formed in the combustion equipment. When the equipment works, straw and mulching film garbage are fed from the material inlet and ignited, sufficient air blown in by the air blower participates in and is combusted for the first time on the lower layer of the combustion equipment, and gas which is not fully combusted is fully combusted again on the upper layer of the combustion equipment; through two times of combustion in which a large amount of air participates, toxic and harmful smoke dust generated by combustion treatment of straw and mulching film garbage can be completely reacted into nontoxic and harmless smoke dust basically.

This utility model discloses a high-efficiency combustion-supporting blower for an incinerator, relating to the field of incinerator technology. It includes: a flue pipe, fixedly connected to a support frame; a blower, fixedly connected to the support frame; a connecting pipe, fixedly connected to the blower; a reciprocating mechanism, mounted on the support frame, for uniformly blowing air into the support frame to ensure more complete waste combustion; and a vibration mechanism, mounted inside a collection frame, for vibrating the support frame to cause the burned ash to fall into the collection frame. By incorporating the reciprocating mechanism, blower, and connecting pipe, uniform airflow is achieved within the support frame, resulting in more thorough waste combustion. The vibration mechanism also ensures that the burned ash falls into the collection frame, preventing dust accumulation and ensuring proper waste combustion.

The invention provides a hearth temperature control method based on III-type fuzzy width and improved experience pool reinforcement learning, which comprises the following steps: acquiring a control input and interference set based on a hearth solid waste combustion process; pID input is constructed, a basic control closed loop is carried out, an ACN structure is constructed, PID parameter online adaptive adjustment is carried out, and ACN adaptive PID is obtained; fitting the ACN adaptive PID in combination with an interval three-type fuzzy system, a width learning system and a shared layer mechanism to obtain an interpretable approximator; empirical definition, priority calculation, uniform sampling, weight correction, smooth updating and empirical reordering are carried out to obtain an efficient empirical utilization mechanism; and calculating a final update quantity, outputting an adaptive update ACN parameter, and obtaining and operating an updatable approximator. According to the method, the training sample utilization efficiency is remarkably enhanced, and the real-time response and resource consumption of the system can be dynamically balanced.

The invention discloses an environment-friendly snow-melting agent based on agricultural and forestry wastes, and relates to the technical field of preparation of snow-melting agents. The environment-friendly snow-melting agent based on the agricultural and forestry wastes is prepared from the following components in parts by weight: agricultural and forestry waste combustion ash, food processing organic waste liquid, polyhydric alcohols, filler, agricultural waste fibers, synthetic paper pulp, a polyacrylate water absorbent, a binder and activated clay. The invention further provides a preparation method of the environment-friendly snow-melting agent based on the agricultural and forestry wastes. The environment-friendly snow-melting agent based on the forestry and agricultural residues is low in cost and stable in snow-melting performance, and the problems that an existing snow-melting agent is high in cost, short in time efficiency, poor in adhesiveness, single in function and poor in stability, and a road surface is prone to secondary icing after snow melting are effectively solved.

The invention relates to the technical field of tail gas treatment, in particular to a radioactive combustible waste combustion furnace tail gas purification treatment system which comprises a combustion unit provided with a radioactive solid waste feeding and conveying mechanism used for conveying radioactive solid waste into the combustion unit at a preset speed; the quenching unit is connected with a smoke outlet of the combustion unit through a smoke pipeline, a spray gun assembly is arranged in the quenching unit and comprises a double-fluid spray gun and a sewage circulation spray gun, and the double-fluid spray gun and the sewage circulation spray gun are used for spraying atomized quenching water into smoke. The radioactive combustible waste combustion furnace tail gas purification treatment system has the beneficial effects that efficient incineration of radioactive solid waste and efficient removal of tail gas pollutants are achieved through multi-stage cooperative treatment, and the system can effectively decompose organic matter, inhibit generation of dioxin and reduce the emission concentration of NOx, SO2, particulate matter, heavy metal and radioactive aerosol.

This invention discloses a horizontal thermal plasma ship waste treatment system, comprising a crushing and conveying device, a plasma pyrolysis gasification combustion device, and a waste heat recovery device. The plasma pyrolysis gasification combustion device is arranged horizontally, positioned below and connected to the crushing and conveying device. The waste heat recovery device includes a flue gas waste heat recovery unit and a cooling unit, both arranged horizontally. The flue gas waste heat recovery unit is connected to the plasma pyrolysis gasification combustion device, and both the flue gas waste heat recovery unit and the plasma pyrolysis gasification combustion device are located within the cooling unit. According to this invention, the horizontal thermal plasma ship waste treatment system can effectively reduce the space occupied on the ship, effectively lower the center of gravity of the plasma pyrolysis gasification combustion device, enhance the anti-sway capability and efficiency of the horizontal thermal plasma ship waste treatment system, and effectively recover the heat generated by waste combustion, thereby improving energy utilization efficiency.

A material recovery system for wet ash generated from municipal waste includes infeed storage of wet ash, an oversized and organic removal subsystem, a material sizing subsystem, a metal recovery subsystem, and an aggregate finishing subsystem. The system for material recovery results in the output of commercially usable aggregate material, ferrous materials, and non-ferrous materials. The subsystems of the material recovery system include one or more screens, dryers, feed hoppers, eddy current separators, magnets, crushers, and air classifiers.

[Problem] To provide: a method for producing waste-derived chloroprene that can be used as a raw material for synthetic rubber, while reducing the environmental burden thereof; and a method for producing chloroprene rubber. [Solution] One aspect of the present invention provides a method for producing chloroprene, said method comprising: a preparation step for preparing a fixed carbon source that contains a waste combustion residue; a generation step for generating a chloroprene precursor from the fixed carbon source; and a conversion step for converting the chloroprene precursor into chloroprene.

The utility model discloses a solid waste combustion pollution prevention monitoring device, which belongs to the technical field of monitoring equipment and comprises a monitoring base, a supporting column is fixedly connected to the top end of the monitoring base, an adjusting groove is formed in the surface of the supporting column, and a connecting column is arranged in an inner cavity of the adjusting groove. One end of the connecting column is provided with an adjusting structure for adjusting the height of the connecting column, the other end of the connecting column is fixedly connected with a mounting plate, the bottom end of the mounting plate is provided with an adjusting assembly, the top end of the adjusting assembly penetrates through the mounting plate and is provided with a rotating seat, and the top end of the rotating seat is in bolted connection with an adjusting frame; and an inner cavity of the adjusting frame is rotationally connected with a monitoring camera through a rotating shaft, and a positioning structure is arranged on the surface of the monitoring camera, so that the solid waste combustion pollution prevention and control monitoring range of the monitoring device is enlarged, and the solid waste combustion pollution prevention and control monitoring efficiency of the monitoring device is improved.

- related to the patent application with the title: Destroyers of sanitary - rate with technical characteristics - parameters: - constructive type: cylindric horizontal - with tunnel-type combustion chamber, with post combustion chamber on the flue gas path - fuel: GN - natural gases + green - H2 - thermal power 160 kW -- 1600 kW Pmax 3700 kW - temperature 1250 - 1300°C Tmax 1400°C with continuous online monitoring with analysis, metering and data, storage Sanitary-organic waste destroyer is characterized by the fact that: In addition to the combustion of sanitary -organic waste in a tunnel oven with burners on GN fuel - Natural Gas + Green H2, there is also a combustion of the flue gases in a post-combustion chamber with a burner on GN fuel + Green H2 for the purpose of burning dioxin and furans resulting from the combustion of plastic waste and in view of the classification as pollutants permitted by environmental legislation. The green hydrogen that is used by injecting into the natural gas supply pipeline replacing 20% of the natural gas consumption is produced by a modular station - Hydrogen production Electrolyser at the pressure of 1 ~ 4 bar, which uses solar energy: photovoltaic panels. Advantages: reduces natural gas consumption, increases yield, efficiency reduces costs, reduces harmful substances, burns sanitary - organic waste.

The application provides an intelligent optimization method, system and medium for operation of a waste incineration device. The method comprises: obtaining a preset number of historical input variable data and historical output variable data of the waste incineration device, then classifying the historical input variable data and the corresponding historical output variable data to obtain a training data set and a test data set, obtaining key parameters of a gradient boosting tree and training to obtain an updated gradient boosting tree model, calculating an input variable importance index according to the updated gradient boosting tree model and obtaining an optimized input variable by threshold comparison, processing to obtain a heat efficiency prediction model through a multilayer BP neural network and a particle swarm optimization algorithm, and obtaining optimal input variable feature data after the heat efficiency prediction model is processed by a reinforcement learning algorithm; so that the gradient boosting tree model, the multilayer BP neural network and the particle swarm optimization algorithm are used to realize intelligent optimization of the waste incineration device and reduce the power generation cost of the waste incineration device.

A material recovery system for wet ash generated from municipal waste includes infeed storage of wet ash, an oversized and organic removal subsystem, a material sizing subsystem, a metal recovery subsystem, and an aggregate finishing subsystem. The system for material recovery results in the output of commercially usable aggregate material, ferrous materials, and non-ferrous materials. The subsystems of the material recovery system include one or more screens, dryers, feed hoppers, eddy current separators, magnets, crushers, and air classifiers.

The application relates to a three-dimensional air supply grate, and belongs to the technical field of waste incineration grates. The three-dimensional air supply grate comprises a supporting frame, a plurality of guide sleeves arranged in an array, a plurality of vertically-extended air supply pipes, a heat insulation layer and a plurality of lifting mechanisms. A plurality of grate pieces extending leftward and rightward and arranged at intervals in front and back are arranged on the supporting frame. The axes of the guide sleeves all extend vertically and are fixedly arranged in the plurality of grate pieces. The air supply pipes are slidably arranged in the guide sleeves. The top end of the air supply pipe is closed, and the bottom is provided with an air inlet. A plurality of groups of air outlet holes arranged at intervals in up and down directions are arranged on the top wall of the air supply pipe. The heat insulation layer is arranged below the supporting frame, and the bottom of the air supply pipe is slidably arranged on the heat insulation layer. The plurality of lifting mechanisms are arranged below the heat insulation layer. The lifting output ends of the lifting mechanisms are connected with the air supply pipes, and the air supply pipes are driven to reciprocatingly move up and down. The three-dimensional air supply grate can make oxygen more uniformly penetrate into waste, and improve waste combustion efficiency.

The present application relates to the field of green power generation, and discloses a method for improving the power generation conversion efficiency of solid organic matter and reducing carbon emission, which comprises the following steps: a solid organic waste combustion step S1, a high-temperature fuel cell power generation step S2, a heat energy steam power generation step S3, a secondary steam power generation step S4, a tail gas emission step S5, and power supply S6; the present application generates electric energy through the interaction of two power generation systems, improves the power generation conversion efficiency, and reduces the power generation carbon emission; the comprehensive power generation efficiency is 45-70%, and the comprehensive carbon emission reduction amount can be reduced by 30-100%; through a power transformation system, the generated electric energy can be directly transmitted to a power grid or directly sold to a power consumer; the by-produced low-pressure low-temperature steam or hot water can be recycled or supplied to surrounding users or required devices.

The present invention relates to a waste combustion power generation device which generates combustion exhaust gas by combusting waste, obtains superheated steam by using heat of the combustion exhaust gas, and drives a steam turbine with the superheated steam. This waste combustion power generation device is provided with: a combustion furnace (11); a waste heat boiler (13) in which a superheater (21) and a high-temperature heat exchanger (12) are incorporated; an independent superheater (14) that heats the superheated steam by exchanging heat between the superheated steam and the heated fluid; a circulation line (25) that circulates a fluid between the high-temperature heat exchanger (12) and the independent superheater (14); and a generator (15) having a steam turbine to which superheated steam heated by the independent superheater (14) is supplied. The high-temperature heat exchanger (12) is provided with at least a plurality of high-temperature fluid heating tubes (35) that penetrate the side walls (13a, 13b) of the waste heat boiler (13) and extend across the flow path of the combustion exhaust gas.

The invention relates to a high-strength and high-toughness nano-microporous structure ceramic partition wall board, an AI artificial intelligence processing system of the high-strength and high-toughness nano-microporous structure ceramic partition wall board and a preparation method of the high-strength and high-toughness nano-microporous structure ceramic partition wall board. Comprising 10 to 15 parts of alumina powder, 13 to 18 parts of short fiber, 1.5 to 2.0 parts of zirconia, 25 to 30 parts of kaolin, 14 to 16 parts of black soil, 3 to 5 parts of feldspar, 10 to 15 parts of cordierite, 3 to 5 parts of quartz, 8 to 10 parts of a chemical pore-forming agent, 55 to 60 parts of a waste combustion substance pore-forming agent, 0.1 to 1 part of tetramethylammonium hydroxide, 0.1 to 1 part of hydroxyethyl cellulose and 0.1 to 1 part of a silane coupling agent. The high-strength and high-toughness ceramic partition wall board with the nano-microporous structure is prepared from the raw materials, the strength and toughness of the partition wall board are improved through the aluminum oxide short fibers and the silicon carbide short fibers, and when the chemical pore-forming agent and the waste combustion substance pore-forming agent are compounded and used in a specific combination, the porosity of the high-strength and high-toughness ceramic partition wall board with the nano-microporous structure is remarkably improved; therefore, the composite board has noise reduction, sound insulation, heat preservation, fireproof performance and light weight.

The invention provides a carbon-based solid waste combustion system and method, and belongs to the technical field of carbon-based solid waste dehydration and decarburization, and the carbon-based solid waste combustion system comprises a pretreatment system, a carbon-based solid waste combustion device and a waste heat recycling system. Wherein the pretreatment system is suitable for drying, dehydrating and pre-activating high-water-content fire-retardant solid waste to obtain low-water-content activated solid waste; the carbon-based solid waste combustion device comprises a hearth and an outer circulation loop connected with the hearth, and the outer circulation loop is provided with a gas-solid separator upper return feeder, a preheating activator and a lower return feeder which are sequentially connected. The waste heat recycling system comprises a waste heat recycling device connected with an exhaust port used for exhausting high-temperature flue gas in the carbon-based solid waste combustion device and a flue gas pipeline connected with the pretreatment system, and the waste heat recycling system is suitable for conveying medium-temperature flue gas generated by the high-temperature flue gas through the waste heat recycling device.

The invention discloses a polymeric fuel based on solid waste and a preparation method thereof, and belongs to the technical field of novel energy and solid waste resource.The method comprises the steps that industrial solid waste, municipal solid waste and agricultural waste serve as solid waste seeds, and the solid waste seeds are obtained through quantum calculation and molecular dynamics collaborative optimization; directional reconstruction of a molecular structure is realized under controlled hot pressing and inert atmosphere, and the high-calorific-value polymeric fuel is prepared; and further compounding a solid waste combustion-supporting activator prepared from solid wastes such as coal gangue and fly ash with the polymeric fuel to form the composite polymeric fuel with heat value, catalytic combustion supporting and porous structure synergism. The composite fuel can be applied to multi-scene customization of circulating fluidized bed boilers, industrial kilns, small and medium-sized boilers and the like, and the comprehensive targets of coal saving, efficiency improving and collaborative desulfurization are achieved. Compared with the prior art, the method has the remarkable advantages in the aspects of solid waste high-value utilization, fuel performance stability, industrial adaptability, environmental protection and emission reduction.

The present application relates to the technical field of waste feeding control, in particular to a waste feeding device and adjusting method for incineration power generation. The waste water content characteristics are analyzed through leachate flow time series data, the load coefficient quantifies the density characteristics, and the combustion characteristics are represented by the change of carbon monoxide concentration, thereby constructing a three-dimensional index system of leachate characteristic coefficient, density characteristic coefficient and combustion characteristic coefficient. The cluster algorithm is used for pattern recognition of waste grabbing operation, and a cluster group with similar combustion characteristics is formed. In the current waste grabbing operation belonging to the cluster group, the feeding speed and shaking speed parameters are dynamically optimized based on the carbon monoxide concentration distribution characteristics, replacing the traditional fixed control mode. The method realizes the intelligent matching of waste composition change and process parameters, optimizes the combustion process through leachate management, pile compaction degree and the like, and significantly improves the sufficiency of waste combustion.

The utility model discloses a kind of multi-stage combustion formula precombustion furnace dangerous waste depth purification device, including case, support frame and feeding box, the support frame is fixedly connected at the bottom of case, the feeding box is fixedly connected at the top end side wall of case, the bottom end inner wall of case is fixedly connected with ladder frame, the sidewall of case is fixedly connected with motor, the inside rotationally connected of case has shaft, the shaft wall of shaft is fixedly provided with poking frame, the output shaft of motor is fixedly connected with the end of shaft, the top end inner wall of ladder frame is provided with recess.This utility model is driven by motor to rotate shaft to drive poking frame, and dangerous waste is evenly scattered to the inclined plane of ladder frame, the inclined plane design of ladder frame makes dangerous waste gradually slide under gravity, prolongs combustion time, ensures full reaction, while poking frame will disturb airflow inside rack, and will improve dangerous waste combustion uniform effect.

The invention provides an economizer pneumatic ash removal device based on solid waste combustion, and relates to the technical field of ash removal. The lower side face of the dust accumulation shell is connected with a ventilation shell through bolts. A dust filter screen is adhered to the inner side surface of the dust collection cylinder; a fan motor is installed in the center of the lower side face of the ventilation shell, and a fan disc is installed on a motor shaft of a motor of the fan motor. An air pipe connector is bonded in the through hole of the gland, a connecting air pipe is installed on the air pipe connector, and a dust collection shell is installed at the other end of the connecting air pipe. Through the arrangement of the fan motor, the fan disc, the dust collecting barrel, the dust filtering net and the dust sucking shell, the wind power sucking and removing work of coal ash on the economizer is achieved; the problems that raised coal ash cannot be collected in a brush scraping ash removal mode in traditional economizer dust removal and cleaning work, coal dust diffusion affects respiratory system health of cleaning personnel, and coal ash sedimentation causes secondary pollution to the surface of an economizer coiled pipe are solved.

The utility model relates to a gas guide structure for improving solid waste combustion efficiency, and relates to the field of solid waste combustion equipment. The combustion furnace comprises a combustion furnace body, a first air inlet piece and a second air inlet piece, a plurality of sliding grooves are transversely and vertically formed in the bottom of the vertical end face of the outer side of the combustion furnace body in a penetrating mode, and a high-pressure air pump is fixedly arranged at the bottom of the combustion furnace body in a communicating mode; the second air inlet piece is arranged in the combustion furnace body and located below the first air inlet piece, the first air inlet piece comprises a mesh plate, the mesh plate is horizontally fixed to the inner wall of the combustion furnace body, a plurality of flow dividing pipes are horizontally arranged below the mesh plate in the transverse direction, an air box is fixed to the outer wall of the combustion furnace body, and the air box is fixedly communicated with one ends of the flow dividing pipes. Solid waste is accumulated on the mesh plate, the multiple mesh rods are arranged at different positions of the solid waste, when air flows upwards, the solid waste with different layer thicknesses can receive the air, and therefore the combustion efficiency and effect of the solid waste on the fire grate are guaranteed.

The invention discloses a low-heating-value waste combustion system which comprises a feeding subsystem used for screening one or more low-heating-value solid wastes into materials with the particle size smaller than or equal to 10 mm and conveying the materials; the self-sustaining combustion subsystem is connected with the feeding subsystem and used for conducting self-sustaining combustion on the treated materials in a turbulent flow collision gap combustion mode and comprises a self-sustaining combustor, high-pressure air is input into the bottom of the self-sustaining combustor to generate multiple strands of turbulent flow, the materials are driven to form collision turbulent flow in gaps, and the collision turbulent flow is generated; and the materials and air are subjected to high-speed friction collision within the residence time, molecular-level mixing is completed for sufficient combustion, meanwhile, a stable combustion residence area is constructed through the quenching effect of the gap wall face and high-temperature wall face radiation, and sustainable self-sustaining combustion is formed. Under the condition that no external fuel is added, full combustion can be achieved by using the heat value of waste materials. And meanwhile, the combustion process is optimized and the heat energy utilization efficiency is improved by adjusting the residence time of the materials in the furnace, the hearth temperature, the air supply amount and other factors.