146 results about "Municipal solid waste incineration" patented technology

The present invention provides a system and method for tail gas emission modeling analysis of a municipal solid waste incineration process. The system comprises a reference working condition multi-software coupling full-process numerical simulation model construction module, a multi-operation working condition simulation mechanism data acquisition module, a MIMO-LRDT-based tail gas emission model construction module and a single / double-factor-based tail gas emission analysis module. The reference working condition multi-software coupling full-process numerical simulation model construction module is connected to the multi-operation working condition simulation mechanism data acquisition module. The multi-operation working condition simulation mechanism data acquisition module is connected to the MIMO-LRDT-based tail gas emission model construction module. The MIMO-LRDT-based tail gas emission model construction module is connected to the single / double-factor-based tail gas emission analysis module. The system and method for tail gas emission modeling analysis of a municipal solid waste incineration process provided by the present invention can achieve tail gas emission modeling analysis of the municipal solid waste incineration process.

The invention discloses an intelligent control method and device for the urban solid waste incineration process, a medium and a product, and relates to the technical field of urban solid waste incineration. The method comprises the steps that the pusher speed, the fire grate speed, the primary air flow, the secondary air flow, the combustion time, the main steam flow and the furnace oxygen amount of the urban solid waste incineration process at the current moment are obtained; according to the pusher speed, the fire grate speed, the combustion time and the main steam flow at the current moment, the main steam flow at the next moment is determined through a main steam flow prediction model; according to the primary air flow, the secondary air flow and the furnace oxygen amount at the current moment, the furnace oxygen amount at the next moment is determined through a furnace oxygen amount prediction model; and in combination with a switching rule based on expert knowledge, a main steam flow controller and a furnace oxygen amount controller are solved by utilizing a gradient descent algorithm, and the optimal control rate is determined so as to control the urban solid waste incineration process. The solid waste treatment efficiency is improved, and rapid and stable control over the main steam flow and the furnace oxygen amount is achieved.

The invention discloses an emission reduction system for chloride ions in waste incineration fly ash based on machine learning, relates to the technical field of solid waste resourceful treatment, is used for data-driven fly ash multi-stage dosing collaborative removal, and is divided into fly ash pretreatment and data acquisition, online ion monitoring and dosing decision, multi-stage reaction and dynamic feedback, OTA upgrading and cross-plant migration. And removing the multi-dimensional pollutants synergistically. The dosing ratio and the reaction stage are optimized in real time through a gradient boosting tree-reinforcement learning model, and the concentrations of chloride ions, heavy metals and dioxin precursors are monitored on line. According to the system, monitoring and decision-making paths of all stages are stored in a cloud knowledge graph and can be upgraded through OTA, the chloride ion removal rate is increased by more than three percent, the agent dosage is reduced by 25%, the scheme can adapt to the difference of fly ash components in different factories, economy and environmental protection are both considered, and the system has remarkable popularization value in large-scale waste incineration and hazardous waste disposal.

The invention provides an urban solid waste incineration NOx emission prediction method based on MSGSE-NSCF, and the method comprises the steps: obtaining a key variable and nonlinear dependence of NOx emission, and constructing a non-stationary cross converter; constructing a non-stationary gated spectrum enhancement sub-module and a gated convolution attention fusion sub-module, extracting space-time enhancement representation, and realizing time-frequency domain feature fusion modeling; performing hyper-parameter verification to obtain reasonable parameters of the model; according to the NOx emission prediction method based on the non-stationary cross converter and the multi-scale time-frequency feature enhancement, the non-linear dependence, the original structure and the dynamic change of data can be reserved, the non-stationary time sequence is modeled, the output scale is kept, and the NOx emission concentration is obtained. In addition, time domain-frequency domain and global-local cooperative enhancement can be achieved, selective modeling of periodicity and key frequency components is enhanced, and an accurate NOx emission prediction result is obtained.

The invention relates to the technical field of solid waste resource utilization, and particularly discloses a waste incineration fly ash resource treatment method which comprises the following steps: firstly, efficiently removing dioxin in fly ash in a manner of adding a vanadium-cerium-loaded charcoal catalyst and co-pyrolyzing with fluidized bed combustion ash; the method comprises the following steps: preparing fly ash from fly ash, washing the fly ash with micro-nano bubble water containing carbon dioxide for dechlorination, adding an iron-manganese-silicon biochar adsorbent after dechlorination to adsorb heavy metals in the fly ash, sintering the fly ash after adsorption and fly ash under an alkaline condition to further stabilize residual soluble chlorine and heavy metals in the fly ash, and finally, recycling the residual soluble chlorine and heavy metals in the fly ash. And the treated fly ash and cement are processed into cement building blocks with good mechanical properties, so that resource utilization of the waste incineration fly ash is realized.

Provided in the present invention is a multi-purpose modular operation optimization system for a municipal solid waste incineration process. The system comprises a multi-modal historical data synchronous driving module, an MSWI-process virtual control object module, an MSWI-process loop control module, an MSWI-process monitoring module, an operation parameter assisted decision-making module, a data-acquisition forward isolation module, an operation parameter reverse transmission module, an MSWI-process single-objective / multi-objective operation optimization module, a difficult-to-measure procedure parameter soft-measurement module, a multi-modal data driven procedure parameter prediction module, a vision-driven combustion state identification module, a flame combustion line quantification module and a multi-modal data acquisition module. The multi-purpose modular operation optimization system for a municipal solid waste incineration process provided in the present invention can achieve functions such as laboratory operation-optimization algorithm verification, laboratory procedure-parameter-modeling algorithm simulation and real-time verification, industrial field data acquisition and procedure parameter modeling, and industrial field assisted decision-making and operation optimization, and the system is convenient to use.

The invention discloses a control method, device and equipment of a semi-dry method deacidification system and a medium, and relates to the technical field of household garbage incineration power generation treatment. Determining a prediction error value and inputting the prediction error value into a feedforward controller of the first PID controller; the feed-forward controller determines a lime slurry flow feed-forward compensation value according to the prediction error value; based on the lime slurry flow feedforward compensation value, a lime slurry flow error compensation value output by a main controller of the first PID controller and the actually measured lime slurry flow serving as a disturbance compensation value, a first control instruction used for controlling the opening degree of a lime slurry adjusting valve is output through an auxiliary controller of the first PID controller. The method is suitable for a control scene of a semi-dry deacidification process.

The invention provides an urban waste incineration slag resource utilization device and method, and relates to the technical field of slag waste recycling. The urban waste incineration slag resource utilization device comprises an equipment frame and a crusher installed on the equipment frame, and further comprises a circulation sedimentation assembly, a water adding assembly and a resource recovery assembly which are installed on the equipment frame, and the crusher transfers crushed slag into the water adding assembly; the water adding assembly is used for adding water into the ash and enabling the water to flow into the circulation precipitation assembly, the water is discharged to the resource recycling assembly after operation precipitation, and the multiple sets of stirring assemblies are used for stirring slurry in the circulation precipitation assembly. According to the urban waste incineration slag resource utilization device and method, through the arrangement of the circulation sedimentation assembly and the relative fixed sedimentation tank, sedimentation can be obtained within the operation time, overturning dumping and high-pressure water flushing can be achieved, internal slurry is easier to clean, and blockage is avoided.

The invention provides an intelligent detection method and system for multiple pollutants in the urban solid waste incineration process, and belongs to the technical field of artificial intelligence. Inputting the input variables into the multi-module echo state network model to obtain predicted concentrations corresponding to the to-be-detected pollutants output by the multi-module echo state network model; wherein the multi-module echo state network model comprises two sub-modules, each sub-module is constructed for one pollutant, and each sub-module is provided with an independent input layer, a reserve pool and an output layer. According to the method, the multi-pollutant collaborative detection model based on the multi-module echo state network is constructed, and the concentration of various pollutants in the urban solid waste incineration process is accurately predicted through state sharing among the sub-modules.

The invention relates to the technical field of environmental waste treatment, and discloses a preparation method of modified household garbage incineration fly ash, the modified household garbage incineration fly ash comprises the following components by mass: 90-99 parts of a fly ash matrix; 0.1 to 2 parts of a plasma activation layer; 0.5 to 8 parts of a silicon oxide coating layer; the preparation method comprises the following steps: pretreating the fly ash; performing plasma activation; preparing a mineralizing solution; performing biomimetic mineralization; and calcining at low temperature. The plasma activation layer is introduced, the silicon oxide coating layer is constructed, and the phosphorus oxide or the boron oxide is cooperatively introduced, so that the microstructure and the surface chemical property of the material are effectively optimized, the specific surface area and the pore volume of the material are increased, and a microporous, mesoporous and macropore synergistic multistage pore channel structure is constructed; the adsorption capacity and the adsorption rate of various waste gas pollutants are improved.

The invention discloses a building material base material produced by utilizing household garbage incineration waste and a preparation process of the building material base material. The base material is prepared from the following components in percentage by weight: 30 to 50 percent of fly ash, 20 to 40 percent of bottom slag, 10 to 20 percent of Portland cement, 3 to 10 percent of Fe-N-C-coated Cu-NPs modifier and 5 to 15 percent of water. Fly ash is subjected to water washing and 600-800 DEG C heat treatment to remove chlorine salt and organic matter, and bottom slag is subjected to screening and magnetic separation to control the particle size and the iron content. Fe-N-C-coated Cu-NPs is prepared through high-temperature pyrolysis and a wet chemical method, and dioxin decomposition and heavy metal solidification are catalyzed. The preparation process comprises the steps of pretreatment, mixing, vibration molding (5-10 MPa) and wet curing (20-35 DEG C, 80-95% humidity and 7-21 days). The compressive strength of the base material reaches 11.8-14.0 MPa, the dioxin content is lower than 0.1 ng-TEQ / kg, the heavy metal curing rate is 96.5-98.5%, the porosity is 10.5-12%, solid waste resource utilization is achieved, and environmental protection and economic benefits are achieved.

The invention relates to the technical field of garbage treatment, and particularly discloses a household garbage incineration fly ash solidification treatment method which comprises the following steps: step 1, preparation of an arsenic sulfide slag leachate: mixing arsenic sulfide slag and water according to a solid-to-liquid ratio of 1: (2-7), stirring for 2 hours, and filtering to obtain the leachate; step 2, mixing and curing treatment: uniformly mixing the household garbage incineration fly ash with the leachate in the step 1, and molding by using a mold; 3, curing: curing the molded material in a mold for 2-3 days to obtain a cured product; the technical problem of secondary pollution caused by the fact that pollutants are released again due to the fact that the structure is easy to be interfered by the outside due to the fact that solidification is carried out by mainly utilizing an LDH interlayer anion point location adsorption technology in the solidification technology that fly ash and arsenic sulfide slag are mixed to form Friedel salt in the prior art is solved.

A high-toughness magnesium-calcium binder mortar material from multi-component high-salinity solid waste and a preparation method thereof are provided. Raw materials of the high-toughness magnesium-calcium binder mortar material from multi-component high-salinity solid waste include a dry powder mortar material, a shrinkage reducing agent, a water reducing agent and fibers, where an addition amount of the fibers is 1.0-2.0% of a mass of the dry powder mortar material; where in parts by weight, the dry powder mortar material includes: 28-40 parts of aging mixture, 10-15 parts of industrial solid waste gypsum, 5-8 parts of light burned magnesium oxide, 2-5 parts of high alumina cement, 3-8 parts of rubber powder and 30-40 parts of artificial fine sand; and where in parts by weight, the aging mixture includes 50-70 parts of municipal solid waste incineration (MSWI) fly ash and 30-50 parts of magnesite, as well as aluminum dihydrogen phosphate solution and phosphogypsum leachate.

The utility model discloses a recycling, grading and screening mechanism for household garbage incineration slag, which relates to the technical field of household garbage incineration slag and comprises an outer barrel and a screen barrel. The screen drum is arranged in the outer drum, and the screen drum can rotate in the outer drum. The screen drum comprises a fine screen drum, a medium screen drum and a coarse screen drum; the middle screen drum is of a hollow structure, and the two ends of the middle screen drum are open ends. Each of the fine screen drum and the coarse screen drum is of a hollow structure, one end is an open end, and the other end is a closed end; the open end of the fine screen drum and the open end of the coarse screen drum are communicated with the two open ends of the middle screen drum respectively. A V-shaped slag collecting groove is formed in the lower portion of the inner wall of the outer cylinder in a penetrating mode. The number of the slag collecting grooves is three, and the three slag collecting grooves are located below the fine screen drum, the middle screen drum and the coarse screen drum correspondingly. The classification screening mechanism achieves the multi-stage screening function and has the dust removal function, and the practicability of the screening machine is improved.

This application provides a method and product for preparing a composite coal-saving synergist for cement clinker using undisturbed fluorine-containing sludge and other solid wastes in a synergistic and low-energy-consumption manner. Fluorine-containing sludge, steel slag, municipal solid waste incineration fly ash, nickel-iron slag, and aluminum ash slag are used as main raw materials. Through a series of processes including raw material pretreatment, pre-homogenization, material proportioning design, extrusion granulation and activation-induced product formation, coagulation, self-hardening, self-curing, and self-drying, a composite coal-saving synergist for calcining high-quality cement clinker is prepared. This method avoids the drawbacks of high energy consumption and inefficient utilization of dried fluorine-containing sludge during the drying process. It fully utilizes the effective components in various solid wastes, including fluorine-containing sludge, to achieve synergistic effects, enabling large-scale, low-energy, and high-efficiency treatment of fluorine-containing sludge and other industrial solid wastes.

The utility model discloses a household garbage incineration fly ash pickling device which is characterized in that a gas outlet is formed in a pickling tank, and a filter screen is arranged at the gas outlet; the gas collecting tank comprises a liquid sealing device, a gas outlet is formed in the top of the liquid sealing device, a gas inlet, a water replenishing port and an acid outlet are formed in the side wall of the liquid sealing device, and the gas inlet is communicated with the gas discharging port through a pipeline. The air outlet with the filter screen is formed in the pickling tank, so that dust is effectively prevented from entering a subsequent air collection device, and pipeline blockage is avoided; and meanwhile, a liquid seal device in the gas collecting tank is sealed by liquid, so that gas generated in the pickling process cannot escape into workshop air, the collected gas is safely guided out in cooperation with a gas discharging opening, and the whole device achieves the safe and environment-friendly treatment effect while guaranteeing the clean workshop environment and maintaining the normal operation of equipment.

The invention discloses a household garbage incineration fly ash low-temperature pyrolysis flue gas coupling treatment system and method, and belongs to the field of household garbage incineration fly ash treatment. The system comprises a fly ash pretreatment unit, a pyrolysis unit, a protective gas supply unit and a flue gas purification unit, according to the invention, CO2 obtained by carbon capture of waste incineration flue gas is used as a pyrolysis protection gas, fly ash and an additive are mixed and stirred and then are fed into a pyrolysis unit to complete low-temperature pyrolysis, after the pyrolysis flue gas is subjected to multi-stage purification, the flue gas rich in CO2 can be recycled to a carbon capture process, and the flue gas reaching the standard is directly discharged and is matched with a dust returning and recycling structure. According to the invention, pollutant source reduction and carbon emission reduction are realized, system energy consumption and operation cost are reduced, coupling modification with existing incineration plant facilities can be realized, and stable and up-to-standard emission of flue gas is ensured.

This application relates to the field of municipal solid waste incineration technology, and more particularly to a water-cooled screen device for waste heat boiler flue and a waste heat boiler using the same. The water-cooled screen device for waste heat boiler flue includes multiple sets of membrane water-cooled evaporator screen structures evenly spaced within the waste heat boiler flue. The top of each membrane water-cooled evaporator screen structure is suspended and connected to the top of the waste heat boiler flue, with the screen body extending vertically in the longitudinal direction. The interior of each membrane water-cooled evaporator screen structure consists of multiple steel pipes arranged laterally and extending vertically in the longitudinal direction. This solves the technical problems of insufficient heat absorption capacity of the waste heat boiler's heating surface, leading to high-temperature corrosion of the heating surface by flue gas and easy ash accumulation and blockage, increasing boiler flue gas resistance.

This invention discloses a grouting material based on water-treated municipal solid waste incineration bottom ash and its preparation method. The grouting material comprises 65-85 parts by weight of silicate cement, 15-35 parts by weight of municipal solid waste incineration bottom ash, and 39-41 parts by weight of mixing water. Before preparing the grouting material, the municipal solid waste incineration bottom ash is partially treated with mixing water for no less than 15 days. Pre-treating the waste incineration bottom ash with partial mixing water effectively reduces the aluminum content in the bottom ash, inhibiting the expansion and cracking caused by the reaction of aluminum in the alkaline environment of cement to generate hydrogen, thereby ensuring the volume stability and mechanical strength of the material. Ordinary silicate cement is used as the matrix, and water-treated municipal solid waste incineration bottom ash is added as an auxiliary cementing material. The mixture is stirred with water to form a slurry. The resulting grouting material has excellent mechanical properties and is suitable for engineering applications such as foundation reinforcement and rock and soil fissure filling.

The present invention provides a method for washing chlorine bypass dust with water, which can reduce the selenium concentration in the wastewater discharged when chlorine bypass dust is washed with water, while keeping costs for equipment and chemicals down. [Solution] A method for washing chlorine bypass dust, comprising a slurrying step of adding washing water to chlorine bypass dust to form a slurry, and a solid-liquid separation step of separating the liquid phase from the slurry, wherein the slurry further contains municipal solid waste incineration fly ash in addition to the chlorine bypass dust, and the municipal solid waste incineration fly ash accounts for 15% by mass or more and 80% by mass or less of the total amount of the chlorine bypass dust and the municipal solid waste incineration fly ash.

The application provides a flue gas oxygen content control method based on interval type-2 fuzzy-width PID, and relates to the technical field of solid waste incineration. The method comprises the following steps: obtaining a control variable, a disturbance variable and a flue gas oxygen content set value at a preset time; designing a double ET mechanism, inputting the control variable, the disturbance variable and the flue gas oxygen content set value at the preset time into a first controller and a second controller according to the double ET mechanism to obtain a first control variable increment and a second control variable increment, wherein the first controller is a complex controller based on IT2FBLS, and the second controller is a simple controller based on adaptive PID; determining an output control variable at the preset time according to the first control variable increment and the second control variable increment; and determining an actual output value of the flue gas oxygen content at the preset time according to the output control variable at the preset time. The application solves the problems of poor real-time performance, large calculation amount and resource consumption in the combustion state control of the municipal solid waste incineration (MSWI) process in the prior art.

The present invention relates to a method and equipment for preparing a deacidifying agent from municipal solid waste incineration fly ash. The method comprises the following steps: primary conversion, converting various types of minerals in the municipal solid waste incineration fly ash into metal carbonate minerals; secondary conversion, converting the obtained metal carbonate minerals into corresponding metal oxides to obtain a deacidifying agent with high alkalinity; and optionally, a tertiary conversion before deacidification application, hydrating the metal oxides to make them into a deacidifying agent with high activity; wherein the municipal solid waste incineration fly ash is generated by deacidifying the flue gas from municipal solid waste incineration; the primary conversion is carried out in an aqueous solution and the conversion reagent contains water-soluble carbonate and / or water-soluble bicarbonate; the secondary conversion is carried out at a temperature above 700 °C. The method of the present invention realizes the harmlessness, reduction and resource utilization of the municipal solid waste incineration fly ash, prevents the environmental release and ecological burden of toxic and harmful substances, and has good technical and economic feasibility.

This invention discloses a hydrothermal detoxification device for fly ash from municipal solid waste incineration, comprising a reactor, a pulse jet suspension mechanism, a differential speed agitation mechanism, and a static hydraulic cavitation mechanism. The pulse jet suspension mechanism is located at the bottom of the reactor to maintain fluidization throughout the reactor. The differential speed agitation mechanism is located in the middle of the reactor to perform high-frequency shearing and surface activation of suspended particles. The static hydraulic cavitation mechanism is located at the top of the reactor to enhance the hydraulic cavitation effect and increase the material reaction rate. The pulse jet suspension mechanism, differential speed agitation mechanism, and static hydraulic cavitation mechanism are all connected to an external control system for independent decoupled control. This invention features a compact structure, ease of use, and high reliability. It can enhance mass transfer and reaction in a highly alkaline environment through a low-speed, high-shear agitation system, significantly improving the effectiveness of hydrothermal detoxification of fly ash.

The invention discloses a method for intelligently detecting nitrogen oxides in an urban solid waste incineration process based on an integrated random configuration network. The method comprises the following steps: acquiring urban solid waste incineration process data; preprocessing the urban solid waste incineration process data to obtain preprocessed process data; constructing a plurality of nitrogen oxide detection base learning models based on the preprocessed process data; and based on the nitric oxide detection base learning model, jointly constructing a nitric oxide intelligent detection model, and detecting nitric oxide in the urban solid waste incineration process by using the nitric oxide intelligent detection model. According to the invention, real-time accurate monitoring of nitrogen oxide emission is realized, and reliable data support and decision basis are provided for optimizing the incineration process and reducing pollution emission.

This invention discloses a method for preparing water-quenched municipal solid waste incineration ash and its fine aggregate concrete. The method includes: rapidly quenching molten municipal solid waste incineration ash in a room-temperature calcium hydroxide aqueous solution, removing it, and drying it to obtain water-quenched municipal solid waste incineration ash; crushing the water-quenched municipal solid waste incineration ash, sieving out particles larger than 4.75 mm, and then performing graded sieving to form a continuous gradation conforming to Zone II sand standards to obtain a water-quenched municipal solid waste incineration ash precursor; and carbonizing and curing the water-quenched municipal solid waste incineration ash precursor in a closed environment to obtain water-quenched municipal solid waste incineration ash, wherein carbon dioxide is used for carbonization and curing. This invention improves the microstructure and potential activity of municipal solid waste incineration ash, enabling it to be used as a stable fine aggregate in concrete.

The invention relates to a construction material (S), wherein the construction material (S) comprises at least cement clinker (ZK) and at least one water hardening additive (X), wherein at least one water hardening additive (X) is mixed with the cement clinker (ZK) and is not a component of the cement clinker (ZK) itself. [0002] According to the invention, the at least one water hardening additive (X) contains conventionally ground and processed municipal solid waste incineration ash (gHMVA), wherein the conventionally ground and processed municipal solid waste incineration ash (gHMVA) has a particle size of < 200 μm, and contains thermally incinerated municipal solid waste (H), and is not subject to any material alteration and / or thermal treatment except during the incineration of the municipal solid waste (H) and / or after the conventional incineration and processing of the municipal solid waste (H).

The invention relates to a method for preparing calcium fluoride from household garbage incineration fly ash and application, a three-stage countercurrent washing device is utilized, and the method comprises the following steps that S1, the fly ash is collected for pulping; s2, the fly ash obtained after pulping is put into a third-stage countercurrent washing device to be sequentially subjected to first-stage washing, second-stage washing and third-stage washing, third-stage washing liquid generated after third-stage washing is used for second-stage washing, and second-stage washing liquid generated after second-stage washing is used for first-stage washing; s3, primary water washing liquid generated after primary water washing enters a water treatment system, acid is added to adjust the PH, then a capturing agent is added for a reaction, and first wastewater is formed; s4, adding sodium fluoride into the first wastewater, and precipitating to generate calcium chloride and calcium fluoride; and S5, calcium fluoride is washed with water to remove impurities, second wastewater and calcium fluoride are formed, and the calcium fluoride is applied to the additive for electrolytic aluminum. The calcium salt in the fly ash is separated to produce calcium fluoride with high added value, waste acid can be cooperatively treated, and the product calcium fluoride is used as an electrolytic aluminum additive.

This invention belongs to the field of hazardous waste disposal, specifically relating to a method for preparing a solidified fly ash incineration furnace for molten disposal of municipal solid waste. The fly ash is obtained from three-stage countercurrent rinsing. Fluxing materials, pore-forming materials, and cementing materials are then compounded and homogenized using a forced mixer. The homogenized fly ash composite is then fed to a brick press and formed into cubes under mechanical pressure. A through-hole is then drilled in the center of each cube to obtain a solidified wet fly ash body. This wet solidified fly ash body is then placed in a sample library and allowed to stand for 3 days to obtain a dried and hardened solidified fly ash body. This invention provides a steam pressure relief channel during the high-temperature melting process, solving the problem of bursting, improving heat exchange, and increasing melting efficiency. While providing sufficient cold strength to the solidified body, it reduces solidification costs, achieving efficient and safe disposal of fly ash.

This invention discloses a system and process for the resource recovery of fly ash from municipal solid waste incineration. The system includes a feeding buffer unit, a slurry-washing unit, a low-temperature detoxification unit, a water treatment unit, and a tailings resource recovery unit. The slurry-washing unit includes a primary washing and dewatering device and a secondary washing and dewatering device. The filtrate from the primary washing and dewatering device is sent to the water treatment unit, and the solid ash from the secondary washing and dewatering device is fed into the preheating tank of the low-temperature detoxification unit. The low-temperature detoxification unit includes a preheating tank, a detoxification reactor, an energy recovery component, and a dewatering device arranged sequentially. The steam exhaust port of the detoxification reactor is connected to the preheating tank. The filtrate outlet of the dewatering device is connected to the preheating tank, and the ash outlet of the dewatering device is connected to the tailings resource recovery unit. The solid material outlet of the water treatment unit is connected to the preheating tank. This invention systematically solves the problem of synergistic treatment of chlorides, heavy metals, and dioxins in fly ash, and simultaneously achieves the resource recovery of fly ash and secondary pollutants.

This invention discloses a small-scale municipal solid waste incineration mechanical grate furnace, relating to the field of waste incineration technology. It includes a foundation, on which an incineration assembly is mounted, and a feeding assembly is mounted on the incineration assembly. A furnace assembly is located on the side of the incineration assembly furthest from the feeding assembly. The small-scale municipal solid waste incineration mechanical grate furnace of this invention employs a convex eccentric grate plate combination structure, which performs continuous reciprocating rotational motion under the drive of a drive assembly. During this motion, it forms directional compression, shearing, and agitation effects with the furnace wall, powerfully crushing large pieces of waste and loosening the material layer. This completely solves the defects of traditional grates, such as only pushing without stirring, dense and oxygen-deficient material layers, and localized burn-through. The waste remains loose, uniform, and tumbled on the grate, ensuring full contact with combustion air and achieving complete combustion. This significantly reduces the slag loss on ignition rate, making it particularly suitable for incinerating low-calorific-value municipal solid waste in high-altitude and cold regions.