858results about How to "Efficient separation" patented technology

The invention belongs to the technical field of fiber reinforced composite material recovery, and particularly relates to a full-process recovery method of a fiber reinforced composite material. The modified fiber is prepared by constructing a dynamic coordination crosslinking interface layer formed by Co < 2 + > and phenolic hydroxyl groups and amino groups in polydopamine on the surface of the fiber. And then, preparing the fiber reinforced composite material by taking the modified fiber and resin as raw materials. A fiber reinforced composite material is placed in a coordination competitor, cobalt-oxygen and cobalt-nitrogen coordination bonds of an interface layer are competitively dissociated and interface bonding is destroyed under the heating condition by utilizing the stronger coordination capacity of the coordination competitor to Co < 2 + >, and then ultrasonic treatment is assisted, so that efficient and nondestructive separation of fibers and a resin matrix is realized. The process method is simple, convenient to operate, green and environmentally friendly, and has important practical significance and industrial application prospects.

The invention provides a multi-reflection superposition enhanced microwave displacement measurement method and system, and the method comprises the steps: S1, constructing a microwave multi-reflection propagation path, enabling a microwave radar to transmit electromagnetic waves to the microwave multi-reflection propagation path as a transmission signal, and receiving a corresponding echo signal; s2, extracting length change information of a microwave multi-reflection propagation path according to the echo signal; s3, establishing a linear superposition relation model between the total length of the microwave propagation path and respective displacements of W reflection surfaces in the microwave multi-reflection propagation path; w2; and S4, based on the linear superposition relation model, displacement information of the corresponding reflection surface is obtained and output. According to the invention, a larger phase variation can be obtained under the condition of small displacement or weak vibration, so that the measurement sensitivity is improved and the signal-to-noise ratio is improved.

The invention discloses a method for separating vanadium and iron in a high-iron-vanadium electrolyte. The method comprises the steps of pH regulation and control, iron removal, vanadium extraction and vanadium reverse extraction. In the step of iron removal, an iron ion targeted complexing agent and a solid phase adsorbent are added into the high-iron vanadium electrolyte with the pH adjusted, reaction is conducted for 10-15 min under stirring, then direct filtering is conducted, and low-iron vanadium electrolyte and a solid phase are obtained; in the vanadium extraction step, vanadium in the low-iron vanadium electrolyte is extracted by adopting a mixed solvent of pretreated P204, TBP and sulfonated kerosene, and a vanadium-containing organic solution is obtained; and the vanadium reverse extraction comprises the step of carrying out reverse extraction on the vanadium-containing organic solution through a sulfuric acid solution with the concentration of 2.0-5.0 mol / L to obtain a vanadium electrolyte. The method can be used for treating iron ions in all valence states, particularly ferric ions which are easier to extract than vanadium ions, qualified vanadium electrolyte with the iron ion concentration meeting the industrial standard can be directly obtained after reverse extraction, and a complexing agent and an adsorbent can be recycled.

The invention discloses a homeland space planning data intelligent analysis method based on big data, and relates to the technical field of homeland space planning, and the method comprises the steps: collecting multi-source data, carrying out the quality screening, and forming a standardized data set. And setting a space element extraction rule based on a specific planning target, and mining key space elements from the standardized data. Constructing a big data analysis model, inputting key elements to calculate and obtain a spatial development tendency index, and generating a preliminary planning scheme according to the spatial development tendency index; and performing compliance verification on the scheme, generating evaluation data, and adjusting the scheme according to the evaluation data. And finally, performing space efficiency deduction calculation on the adjusted scheme, optimizing the scheme according to deduction result data, and outputting a final planning scheme. According to the method, the accuracy of data mining is improved through target-driven element extraction, and the perspectiveness and scientificity of a planning scheme are enhanced through dynamic efficiency simulation.

The invention discloses a broadband spectrum compression detection method based on digital twinning and signal noise, and relates to the technical field of mobile communication, and the method comprises the following steps: S1, inputting historical spectrum data, geographic position information and electromagnetic environment parameters into a digital twinning model based on an improved FEDform model, and obtaining a digital twinning model; outputting predicted power spectral density and signal support set probability distribution; s2, generating an optimized observation matrix and a digital compression measurement vector; s3, outputting a whitening measurement value; s4, innovative components are extracted; s5, outputting reconstructed broadband spectrum data; s6, outputting a binary support set matrix containing frequency point occupancy state information; and S7, outputting the updated digital twin model. According to the invention, the limitations of dependence on high-speed sampling hardware, poor anti-noise capability and early warning delay in a traditional broadband spectrum detection method are overcome, and an efficient and accurate solution is provided.

The application discloses a double-hearth two-stage heating vacuum distillation furnace, which comprises an evaporation furnace and a condensation furnace which are communicated through a gas passage, wherein the evaporation furnace comprises an evaporation furnace body and at least one top heating mechanism which is detachably arranged on the top of the evaporation furnace body; and the condensation furnace comprises a condensation furnace body, a side heating structure and a furnace cover, wherein the condensation furnace body is divided into a temperature control condensation chamber and a plurality of layers of multistage condensation chambers, and the gas passage can be combined or replaced according to the required reaction conditions of different materials. The vacuum distillation furnace can collect different metals through the gradient change of the temperature of the two hearths, reduces the process of secondary distillation of volatile matters after the furnace is stopped, can complete the processing of diversified raw materials, improves the work efficiency and reduces the processing cost; the modular top heating mode directly radiates heat to the materials, improves the heat utilization rate, can realize the working mode of stopping the furnace without stopping the work, helps to improve the work efficiency, and is convenient for completing the furnace cleaning, maintenance and solid material taking and placing.

The embodiment of the invention provides a connector terminal plug-in mounting device, and relates to the technical field of automatic assembly equipment, the connector terminal plug-in mounting device comprises a rack and a working track arranged on the rack, a feeding mechanism, two plug-in mounting mechanisms and a discharging mechanism are sequentially arranged along the processing direction of the working track, and a carrying mechanism is arranged at the working track. The plug-in mounting mechanism comprises a terminal feeding assembly, a plug-in mounting assembly and a material folding assembly, the plug-in mounting assembly comprises a first sliding block and a second sliding block which move in the two perpendicular directions, the first sliding block is provided with a plug-in mounting head, the second sliding block is connected with a clamping plate used for clamping a terminal material belt, and the plug-in mounting mechanism further comprises a shearing assembly. The shearing assembly is of a cutter structure driven by a lever, and a cutter automatically resets by means of shearing reaction force after shearing is completed. The device has the effects of preventing the terminal material belt from being cut by mistake and effectively separating the terminal from the material belt.

The utility model provides a self-propelled sunflower harvester, which belongs to the technical field of agricultural machinery and structurally comprises a self-propelled vehicle machine and a frame, a header is arranged at the front end of the frame, and a primary conveyor and a secondary conveyor are communicated with the rear of the header. The rear part of the secondary conveyor is communicated with a thresher; a screening mechanism is arranged below the thresher, and the screening mechanism is composed of a first-stage vibrating screen which is composed of a swinging fish scale screen and rushes backwards, and a second-stage vibrating screen which is composed of a swinging stepped dense mesh screen and rushes forwards; the screening mechanism communicates with the conveying and lifting mechanism. The conveying and lifting mechanism comprises a transverse auger and a bucket elevator. And the conveying and lifting mechanism is connected with the grain collecting hopper. The sunflower seed and sunflower disc separating device can achieve good separation of sunflower seeds and sunflower discs, the sunflower seeds and the sunflower discs are respectively conveyed in two paths during threshing, and simple and efficient threshing separation can be achieved. The threshing process is automatically completed, manpower and material resources are saved, and good harvesting and harvesting effects are achieved.

The invention discloses an HSI and ranging data cross-domain classification method and system based on domain expansion and feature decoupling, and aims to solve the problems of single mode, insufficient domain offset simulation and weak generalization ability in the prior art. Preprocessing the HSI and LiDAR data to obtain a source domain sample, and generating an expansion domain sample through frequency domain amplitude disturbance and adversarial domain expansion; extracting basic features by using a multi-stream convolutional neural network, and separating domain specific features and cross-modal and cross-domain domain invariant features; and adaptively fusing the three types of features through an attention network, and inputting the preprocessed target domain data into a trained model to obtain a classification result. Through multi-modal fusion, mixed domain expansion and feature decoupling, the cross-domain classification precision and generalization ability are improved, fine adjustment of target domain data is not needed, application is flexible, and the method is suitable for multi-scene remote sensing ground feature classification.

The invention discloses an image generation method and device, electronic equipment and a storage medium, and belongs to the technical field of electronic equipment.The method comprises the steps that a motion vector field is calculated based on a video sequence; wherein the motion vector field comprises pixel-level motion information of each image frame in the video sequence; generating a dynamic region mask based on the amplitude information of the motion vector field; wherein the dynamic region mask is used for identifying dynamic pixels and static pixels in the video sequence; determining a static background and at least one dynamic element from the video sequence based on the dynamic region mask; and performing synthesis processing on the dynamic element and the static background to generate a dynamic low-light image.

This invention provides a system and method for recovering polycrystalline silicon slurry. The polycrystalline silicon slurry recovery system includes: a flash tank, a settling tank, a dryer, a dryer condenser, a scrubbing tower, and a clarified liquid tank. The slurry enters the flash tank through its inlet; the flash tank's gas phase outlet is connected to the clarified liquid tank's inlet; the flash tank's solid-liquid mixture outlet is connected to the settling tank's inlet; the settling tank's solid-liquid mixture outlet is connected to the dryer's inlet; the clarified liquid tank's outlet is connected to the scrubbing tower's liquid phase inlet; the dryer's gas phase outlet is connected to the scrubbing tower's gas phase inlet; the scrubbing tower's liquid phase outlet is connected to the clarified liquid tank's inlet; the scrubbing tower's gas phase outlet is connected to the dryer condenser's inlet; and the dryer condenser's outlet is connected to the clarified liquid tank's inlet. This recovery system can efficiently separate the solid and liquid phases in the slurry, recovering chlorosilanes and dry powder from the slurry, and also avoids silicon powder clogging problems in subsequent equipment.

The present application relates to the technical field of polymer separation membrane, and discloses a method for preparing covalent framework composite membrane by gel vapor assistance, comprising the following steps: dissolving amino guanidine derivatives or water-soluble amine monomers and 1,3,5-triformylphloroglucinol derivative monomers in pure water respectively, mixing uniformly, and then dropping on the base film after alkalization pretreatment to form a hydrogel, and finally performing vapor assisted reaction. By means of gel vapor assisted film formation, the polymers form a uniform and dense film structure on the base film, and a continuous and uniform high-efficiency nanofiltration COF composite membrane can be quickly and simply prepared, and high-efficiency nanofiltration separation can be realized.

The invention discloses a mining area three-dimensional deformation monitoring method and system based on an SAR image, and relates to the technical field of mining area monitoring, and the method comprises the steps: extracting a line-of-sight deformation sequence from a time sequence deformation phase set, identifying a deformation acceleration point and a convergence inflection point in the line-of-sight deformation sequence, and segmenting a mining period based on the deformation acceleration point and the convergence inflection point, obtaining a plurality of sub-periods; differential interference is carried out on the initial SAR image and the tail SAR image of each sub-period, differential interference deformation diagrams of the sub-periods are obtained, and earth surface three-dimensional deformation estimated values corresponding to the sub-periods are deduced based on mining geological parameters of the target mining area; coupling the differential interference deformation graph and the three-dimensional deformation estimated value to obtain a three-dimensional deformation initial field; according to the method, the deformation evolution rules of the stages such as acceleration, stabilization and convergence are accurately described, the accuracy and time sequence continuity of three-dimensional deformation monitoring of the mining area are greatly improved, and the dynamic change characteristics of surface deformation in the whole mining process are completely presented.

The invention relates to the technical field of battery disassembling and recycling, in particular to a power battery disassembling and recycling device which comprises a case, a feeding hopper and a discharging box, and the feeding hopper is communicated with a discharging opening of external crushing equipment. According to the power battery disassembling and recycling device, through the synergistic effect of the centrifugal assembly and the vibration assembly, namely, centrifugal force generated by a rotatable centrifugal tube under the driving of the power mechanism is utilized to separate electrolyte, and meanwhile, the driving mechanism drives the upper sliding plate and the lower sliding plate to synchronously vibrate up and down through the moving rod; the blocked residual electrolyte in the battery fragments is effectively exposed and thrown out, so that the recovery efficiency and thoroughness are greatly improved; the connecting assembly adopts a connecting ring and a gold wire hose to ensure the sealing performance of material conveying, and the air blowing auxiliary drying of an air outlet ring and the collection design of an elastic sealing gasket and a negative pressure pipeline are combined, so that the risks of electrolyte leakage and environmental pollution are remarkably reduced, and safe, efficient and comprehensive recovery of the electrolyte in the power battery disassembling process is realized.

The utility model relates to the technical field of silicon steel production and processing, disclose a kind of non-oriented silicon steel coating spraying device, including shell, relative arrangement is provided with smearing subassembly in the shell, the shell bottom is provided with recovery subassembly, the inside of shell is provided with spray device, the inside of shell is fixedly connected with not less than one guide roller, the smearing subassembly includes the slide rail of fixed connection in the inner wall of shell top, shell side wall is fixedly connected with electric push rod, the output end of electric push rod is fixedly connected with support plate, the bottom of support plate is fixedly connected with not less than one telescopic link, spring is equipped on the surface of telescopic link. In the utility model, through the structural setting of smearing subassembly, it solves the problem that coating is difficult to evenly cover the surface of silicon steel after the surface of silicon steel is sprayed in the prior art, coating stripe defect or the phenomenon of missing coating is prone to occur, and product quality is difficult to guarantee.

The utility model relates to a kind of for prothioconazole oxidation synthesis light heavy component automatic separation device, belong to chemical production technical field, including prothioconazole oxidation synthesis component phase tank, mixed liquor regulating valve, light component regulating valve, heavy component regulating valve, flowmeter, mixed liquor regulating valve, light component regulating valve, heavy component regulating valve, flowmeter are all set to prothioconazole oxidation synthesis component phase tank, prothioconazole oxidation synthesis component phase tank is provided with mixed liquor feed inlet, light phase outlet, heavy phase outlet, blow-off, the utility model, optimization tank body structure realizes unpowered high-efficiency separation, reduce equipment cost, improve separation precision and product purity, by phase tank stratification structure optimization, light / heavy phase outlet height difference design and valve control, to effectively reduce entrainment rate, interface height and flow are monitored in real time, dynamically regulate valve opening, when heavy component proportion increases, automatically increase heavy component valve opening, to effectively reduce artificial dependence.

The utility model belongs to the field of apple juice processing, specifically is a kind of based on raw material feeding device for apple juice processing, including processing jar;The top of processing jar is provided with motor box, the inside sleeve joint of motor box is connected with driving assembly, the bottom of processing jar is connected with conical disc, the bottom of conical disc is connected with filter assembly, the driving assembly includes the driving motor of sleeve joint in the inside of motor box, the output of driving motor is fixedly connected with fixed rod, and the top of motor box and processing jar is penetrated, the surface of fixed rod is equidistantly provided with several curved blades from top to bottom;Through the S-shaped curved blade design of driving assembly, the efficient crushing function of apple is realized, S-shaped curved blade is distributed along the reverse of fixed rod two sides, and the cutting edge is formed multidirectional cutting track when rotating, solve the problem of traditional crushing device juice residual pulp, and the crushing efficiency is improved, and the separation of pulp and juice is more thorough.

The application relates to a full-automatic zero-gas consumption drain valve and relates to the technical field of drain valves, which comprises a support, the inside of the support is fixedly connected with a glass fiber pipe, the inside of the support is fixedly connected with an aluminum square pipe, the outside of the aluminum square pipe is provided with a drainage mechanism, the inner wall of the support is provided with a connecting mechanism, one side of the inside of the support is fixedly connected with a water inlet block, one side of the outside of the support is provided with a centrifugal separation mechanism, the drainage mechanism comprises a limiting bolt, the outside of the limiting bolt is threadedly connected at the top of the aluminum square pipe, and the outside of the limiting bolt is fixedly connected with a floating ball plate. The application realizes efficient separation and automatic drainage by automatically controlling the opening and closing of a drainage channel according to the condensate liquid level through the linkage mechanism of the floating ball plate and a valve ball, does not need an additional gas source for driving, reduces operation cost, and improves stability and reliability.

The application discloses a separation system for recycling leaf filter waste residue in an alumina production process, comprising a pressure separation device, a feed pump connected between a leaf filter waste residue slurry source and a feed inlet of the pressure separation device, an external tank dilution circuit, an overflow outlet of the pressure separation device connected to an inlet front end of the feed pump through a shunt pipeline, a underflow pump connected to an underflow outlet of the pressure separation device, a vacuum belt filter connected to an outlet of the underflow pump, a pulping tank arranged below a filter cake discharge outlet of the vacuum belt filter, and a conveying pump connected between an outlet of the pulping tank and a pre-desilication process of an alumina production system. Through the synergistic effect of high solid content mud layer sedimentation technology and external tank dilution technology, the industry problem that leaf filter waste residue is difficult to settle, concentrate and filter and separate due to easy hydrolysis under the condition of low caustic alkali concentration and low molecular ratio and a large amount of fine planktonic matter is effectively solved.

The application discloses a kind of cleaning machines for liquid bag, including transport mechanism, spray mechanism and water storage tank.Transmission belt and water receiving tank are provided to transport mechanism, and spray mechanism includes upper and lower spray assembly, water pump and corresponding switch valve.Water storage tank is located below water receiving tank, is connected by pipeline with first filter screen of inclined detachable, and second filter screen is arranged in the tank.The bottom of the tank has water outlet and drain outlet: water outlet is connected with water pump below first filter screen, and drain outlet is connected with outside above first filter screen.When working, upper and lower spray assembly bidirectionally washes liquid bag; first filter screen is washed by water flow from water receiving tank, and impurities are guided to accumulate side; second filter screen is washed by water flow from pipeline and inlet, and impurities are guided to drain outlet and discharged.The utility model realizes efficient separation and automatic discharge of impurities by double inclined filter screen design, cooperates with circulating water system, significantly improves water resource utilization rate while ensuring cleaning effect, and effectively prevents secondary pollution.

The invention relates to the technical field of plant essential oil extraction, and discloses a valerian-rich rhizoma nardostachyos essential oil directional preparation process, which comprises: taking a functionalized compound solvent, adding rhizoma nardostachyos coarse powder according to a liquid-solid ratio, stirring and soaking to obtain a solid-liquid mixture; the solvent component comprises process water, sodium xylene sulfonate, dipotassium phosphate and polyethylene glycol 400; introducing steam into the mixture, heating to maintain slight boiling, carrying out first-stage distillation, and removing distilled low-boiling-point components to obtain resident in the kettle; cooling the resident to a constant temperature, adding sodium chloride, and stirring until the sodium chloride is dissolved to obtain a heterogeneous mixed system; the heating system is subjected to second-stage distillation, and distillate is collected; and carrying out oil-water separation on the distillate, and collecting an oil phase to obtain a finished product of the rhizoma nardostachyos essential oil. According to the method disclosed by the invention, a hydrotropy-salting-out phase change mechanism is matched with fractional distillation, so that high-efficiency desorption and directional enrichment of valerianone which is difficult to volatilize are realized while acidic and light component impurities are removed.

The invention provides a dual-frequency single-port intermodulation tester, and the tester comprises an intermodulation control module which comprises an intermodulation controller, a first frequency source and a second frequency source, and the intermodulation controller controls the first frequency source and the second frequency source to generate two carrier signals with different frequencies through receiving a configuration instruction; and the multiplexer module comprises a plurality of power amplifier modules and a multiplexer, the plurality of power amplifier modules are used for amplifying the two paths of carrier signals, synthesizing the two paths of carrier signals through the multiplexer, outputting the synthesized two paths of carrier signals to a tested piece, and receiving and processing intermodulation products reflected back from the tested piece at the same time. According to the invention, the accuracy, the integration level and the field applicability of the intermodulation test are effectively improved.

The utility model discloses an integrated heat exchanger suitable for frozen drying machine, including the casing, the casing is equipped with the outlet of drying gas, the inlet of water gas, the coolant outlet and the coolant inlet from top to bottom, the upper portion is equipped with the heat exchanger in the casing, still be equipped with the evaporimeter in the casing, still be equipped with the gas liquid separation chamber of gas in the bottom of casing, the evaporimeter is located heat exchanger below and communicates with the heat medium outlet of heat exchanger, the backflow channel of gas is established between evaporimeter and heat exchanger and the inside of casing, and the gas outlet of evaporimeter and the cold medium inlet of heat exchanger communicate with backflow channel. The utility model divides and sets up the upper and lower end in the casing with heat exchange and evaporation function, can simplify the structure setting in the casing, and the production cost is simplified, after setting evaporimeter below heat exchanger, can realize the step -by -step cooling of airflow from top to bottom, is favorable to the gathering of condensate in the bottom of casing and gas -water separation in the cooling process, thereby guaranteeing the drying effect of gas.

The application belongs to the technical field of inorganic chemical industry, and discloses a preparation method of high-purity hafnium tetrachloride, which comprises the following steps: vacuum degassing pretreatment of mixed hafnium dioxide and high-purity carbon source; continuously feeding the pretreated material into a horizontal rotary chlorination reactor, and reacting with chlorine at 950 DEG C to 1050 DEG C to generate a crude product mixture; filtering the crude product mixture through a high-temperature ceramic filter, removing iron and aluminum impurities through a chemical interception reaction column, and separating zirconium and hafnium through a multi-stage gradient sublimation rectification system, wherein the sublimation rectification system is integrated with a dynamic mass transfer separation control system, and the operation conditions are dynamically adjusted through a mass transfer-heat coupling model based on real-time collected process parameters; and finally collecting and packaging under a fully-closed condition. The obtained hafnium tetrachloride is a high-purity rare metal compound, and can realize deep removal of zirconium impurities and process self-adaptive optimization.

This utility model relates to the technical field of extraction devices for veterinary drug residue detection, and more particularly to an extraction device for veterinary drug residue detection, comprising a device body, a receiving frame fixedly connected to the top left side of the device body, a feeding box fixedly installed at the top rear section of the receiving frame, a cover plate hinged to the top of the feeding box, and a flow guide frame connected to one end of the front of the feeding box. In the sample addition stage, the inclined design of the flow guide frame allows the sample to automatically slide into the centrifuge tank, eliminating the need for manual transfer; during centrifugation, the centrifuge and pump one automatically complete solid-liquid separation and liquid storage; during reagent titration, pump two and the titration nozzle precisely and quantitatively add reagents; compared to traditional manual operation or simple mechanical assistance extraction devices, this reduces a large number of tedious manual operation steps, significantly shortens the detection time, increases the sample processing capacity per unit time, and effectively meets the high efficiency requirements of modern veterinary drug residue detection.

The utility model discloses a kind of fumed silica powder airtight sampling device based on gas-solid separation, it relates to fumed silica production equipment technical field, it includes storage tube, product feed assembly, gas-solid separation component, sampling execution component and compressed air backflushing component;Product feed assembly contains feed channel and first valve, and connects product unpacking workshop pipeline and storage tube;Gas-solid separation component contains filter cartridge and gas circuit pipeline, realize gas-solid diversion and guide away impurity;Sampling execution component negative pressure sampling tube, air hole disc, fixed clamp and sampling bag, complete airtight sampling and residual cleaning;Backflushing component is connected with filter cartridge, and guarantee filter cartridge unobstructed.The utility model sampling device realizes airtight sampling in whole process, no powder leakage, sample purity is high;It is convenient to operate, and does not interfere with production main process, adapts fumed silica continuous production demand.

The utility model relates to the technical field of coal mine discloses a coal -washing equipment for coal mine, including motor no.

The invention relates to the technical field of deep sea resource development, in particular to a magnetic type deep sea ore collecting device which comprises a rigid pressure-resistant main frame, mechanical legs, mechanical arms, an ore processing module, a communication module, a pushing module and a positioning module. A sealed pressure-resistant cabin is arranged in the rigid pressure-resistant main frame; the mechanical legs are symmetrically installed on the two sides of the rigid pressure-resistant main frame. The mechanical arm is installed on the front end face of the rigid pressure-resistant main frame. The ore processing module is arranged along the center line of the rigid pressure-resistant main frame; the communication module is connected with the water surface support mother ship through an armored cable; the pushing module comprises a plurality of horizontal propellers and a plurality of vertical propellers; the positioning module is installed on the upper side face of the rigid pressure-resistant main frame. The device provided by the invention has the advantages of good terrain adaptability, high collection integrity, small disturbance and reliable operation, and is suitable for selective collection operation of resources in a deep sea complex environment.

The present application relates to the technical field of soil treatment, in particular to a soil remediation system for solid waste multi-component joint activation, which comprises a boiler tail gas purification and waste heat cascade utilization unit, a biochar preparation unit, a low-rank coal slime preparation porous carbon unit, a power plant ash alkali metal leaching and residue activation unit, a mixed component composite activation unit and a compound fertilizer forming preparation unit; the boiler tail gas purification and waste heat cascade utilization unit is used for removing dust and acid gas, and the waste heat is used for preparing biochar by biomass pyrolysis and preparing porous carbon by low-rank coal slime; the present application can prepare soil remediation products with water and fertilizer retention and harmlessness by the organic and inorganic compounding of biomass, low-rank coal slime and power plant ash, which has important significance for the treatment and harmless remediation of special soil such as saline-alkali soil and desert soil.