34 results about "Carbon loss" patented technology

The invention relates to the technical field of carbon sink calculation, in particular to a forestry carbon sink calculation model, a forestry carbon credit calculation method and a storage medium. The model comprises an overground biological carbon sink amount estimation module used for calculating overground biological carbon sink data of a target area, an underground soil carbon sink amount estimation module used for calculating soil carbon sink data of the target area, and a litter carbon reserve estimation module used for calculating litter carbon sink data of the target area. The combined loss calculation module is used for calculating carbon loss data; and the final carbon sink total quantity fusion module is used for calculating the carbon sink quantity according to the aboveground biological carbon sink data, the soil carbon sink data, the litter carbon sink data and the carbon loss data. A forestry carbon sink calculation model based on multiple dimensions is established through multiple types of carbon sink estimation modules, and the problem that the requirement for rapid authentication of the global carbon market cannot be met due to high manual dependency is solved; the problems of low calculation precision, high cost and the like caused by insufficient model dynamics, single model calculation dimension and the like are solved.

The invention discloses a dynamic monitoring method, system and device for soil carbon loss and a storage medium, and relates to the technical field of environment monitoring, and the method comprises the steps: obtaining soil parameters through a multi-mode sensing array and a runoff monitoring device which are arranged in a target soil area, the soil parameters comprise a soil gaseous parameter, conductivity, a soil solid parameter and a liquid carbon parameter; calculating a carbon loss amount generated by soil respiration according to the soil gas state parameter, and taking the carbon loss amount as a respiration carbon flux; according to the conductivity, the soil solid parameters and a preset soil organic carbon content relation model, calculating the carbon loss amount of soil erosion migration as erosion carbon flux; calculating the carbon loss amount of soil leaching loss according to the liquid carbon parameters, and taking the carbon loss amount as leaching carbon flux; and performing weighted summation on the respiration carbon flux, the erosion carbon flux and the leaching carbon flux to obtain the total carbon loss of the soil in the target area. A more comprehensive carbon income and expenditure evaluation method is provided by establishing a soil total carbon loss calculation framework covering'gas-solid-liquid 'three phases.

The present invention belongs to the technical field of desulfurization activated carbon regeneration, and relates to a blast furnace gas desulfurization activated carbon regeneration process and device, the regeneration device includes a washing and extraction tank, a regeneration reactor, a gas detection and analysis system, an automatic control system, a temperature monitoring system, and a deoxygenation reactor; the regeneration process includes S1, washing and extraction, S2, heating regeneration: according to the sulfur content of the outlet gas of the regeneration reactor, the heating temperature is adjusted by gradient, and the temperature range of the regeneration reactor is controlled: 150-300°C, and the temperature gradient is 30-50°C; S3, gas circulation, air oxidation, so that elemental sulfur is precipitated from polysulfide. The regeneration process of the present invention has a small carbon loss rate, increases the number of regenerations, and further reduces costs; the temperature of the thermal regeneration process is 150-300°C, the regeneration temperature is low, and the regeneration temperature can be adjusted according to the outlet gas concentration gradient, reducing energy consumption, and at the same time ammonia resources can be recycled, reducing the amount of solution used and the amount of waste liquid discharged, and the regeneration process can obtain elemental sulfur with economic value.

To provide a method for producing an alkane in which a reaction proceeds at a low reaction temperature and reaction pressure, carbon loss from an alcohol is suppressed, and the conversion rate and selectivity are excellent. Provided is a method for producing an alkane from a C8-24 alcohol, the method comprising a step for reacting a C8-24 alcohol with hydrogen in the presence of a zeolite catalyst and a periodic table group 8-10 noble metal at a reaction temperature of 160°C or higher and a hydrogen pressure of 3 MPa or lower by gauge pressure. The zeolite catalyst is an H-beta type or an H-ZSM -5 type, and the molar ratio (SiO2 / Al2O3) of silica (SiO2) and alumina (Al2O3) is 20-35.

The present invention relates to methods involved in the production of flavonoids, anthocyanins and other organic compounds. The present invention provides cells engineered for the production of flavonoids, anthocyanins and other organic compounds wherein the engineered cells comprise one or more genetic modifications, the one or more genetic modifications increase the production of flavonoids by increasing the metabolic flux to the flavonoid precursors and / or reducing the carbon loss resulting from the production of by-products.

The invention discloses a pre-drilling engineering carbon loss calculation method, which belongs to the technical field of carbon emission estimation, and is characterized by comprising the following steps: S1, calculating and determining the carbon loss in a pre-drilling construction project; s2, the carbon sequestration amount of different types of vegetation is obtained through detection; s3, obtaining carbon sequestration quantity influence parameters of different types of vegetation; s4, detecting and obtaining the carbon sequestration amount of soil of different soil types and different depths; and S5, according to the survey data of the standard sample plot, biomass of different types of vegetation is calculated, and carbon reserves, including forest stand carbon reserves and farmland carbon reserves, of the different types of vegetation are calculated in combination with the carbon content of the different types of vegetation. According to the method, the calculation precision of the pre-drilling engineering carbon loss amount is greatly improved by establishing the logic relation based on time, geographical environment and space conditions and the pre-drilling engineering carbon loss amount of petroleum and natural gas, so that a carbon emission evaluation system of petroleum and natural gas extraction activities is more perfect and accurate.

The present application relates to the technical field of coated cutting tools, and provides a coated cemented carbide cutting tool and a preparation method thereof, wherein the cemented carbide substrate comprises a core and a shallow surface layer covering the core, and the whole is constructed as a hard zone with a two-phase zone lower limit or a decarburization phase, and the shallow surface layer also has a toughness zone rich in binder phase, which effectively avoids the problem of performance degradation of the toughness zone of the substrate caused by carbon loss on the surface of the cemented carbide substrate when a coating is deposited on the substrate by chemical vapor deposition. Moreover, the continuous brittle η phase is generated at the film-substrate interface between the coating and the shallow surface layer, thereby reducing the stress concentration points and crack source distribution between the coating and the substrate, which is beneficial to the formation of a chemical vapor deposition coating with low internal stress and high bonding force, and significantly improves the bonding strength between the coating and the substrate.

The invention discloses an ultrahigh-strength carbon material and a preparation method thereof, and belongs to the technical field of carbon materials, and the preparation method comprises the following steps: adding reinforced particles, acrylamide, water-soluble saccharides, N, N '-methylene bisacrylamide, an initiator and a catalyst into deionized water, uniformly mixing, and then sequentially carrying out drying, heat treatment, crushing and ball milling treatment to obtain the ultrahigh-strength carbon material. Composite powder is obtained; the composite powder is sequentially subjected to forming and carbonization treatment, and the ultrahigh-strength carbon material is obtained. By adopting an innovative two-step preparation process, the production process of the graphite block carbon material is remarkably simplified, and the problems of complex process, long production period, high raw material cost, difficulty in controlling the microstructure and the like in the prior art are effectively solved. A strategy of combining a sugar-polyacrylamide hydrogel technology and reinforced particles is utilized, the carbon yield is greatly improved, and carbon loss caused by gas release in a carbonization process is reduced, so that the microstructure of the material is optimized, and the mechanical properties, including key indexes such as compression resistance and bending strength, of the material are improved.

The invention belongs to the field of ecology and forest cultivation, and particularly relates to a method for screening regional high-carbon-sequestration tree species. The method comprises the following steps: firstly, establishing a regional suitable tree species directory, obtaining carbon sequestration rates of different tree species in the regional suitable tree species directory through a carbon sequestration rate model, and screening out regional high-carbon sequestration tree species by comparing the carbon sequestration rates of the tree species; compared with a method for screening the high-carbon-sequestration tree species and varieties only according to the growth speed of forest trees, the method for screening the regional high-carbon-sequestration tree species is higher in scientificity and accuracy. According to the method, all ways of forest carbon sequestration and carbon loss are fully considered, and a solid theoretical basis is achieved. However, a high-carbon-sequestration tree species selection method which is generally adopted at present only depends on the growth amount of trees, does not consider carbon loss, is weak in theoretical basis and cannot accurately evaluate the carbon sequestration capacity of the trees. Therefore, the method disclosed by the invention is higher in scientificity, and the high-carbon sequestration tree species can be more accurately screened out.

The invention relates to the technical field of hard alloy preparation, discloses a preparation method of a WC-CoCrFeNiTi hard alloy based on a carbon compensation model, and aims to solve the problem of carbon element loss in a traditional WC-high-entropy alloy system, and the performance of a material is degraded due to the fact that a carbon component of WC reacts with a CoCrFeNiTi high-entropy alloy during high-temperature sintering to form a carbon-deficient phase. According to the method, a carbon loss quantitative model based on the Fick diffusion law is constructed, and carbon element consumption in the reaction process is accurately calculated and compensated through mathematical modeling. In the aspect of the preparation process, the problems that the high-entropy alloy powder is low in crushing efficiency and poor in mixing uniformity are effectively solved by adopting a multi-stage ball-milling composite process, lattice distortion energy generated in the ball-milling process is eliminated through a vacuum annealing process, and abnormal growth of WC grains in subsequent sintering is inhibited. Through the carbon compensation strategy and preparation process optimization, the WC-CoCrFeNiTi hard alloy with excellent mechanical properties is finally obtained.

The invention discloses a Y2O3-ZrSi2-ZrB2-SiC composite ceramic coating based on combination of a low-energy self-heat-release technology and a bionic glass film synergistic oxygen barrier. The coating comprises a matrix layer, a transition layer and a bionic glass layer. Compared with the prior art, the ZrB2-SiC ceramic coating has the advantages that the problems of oxidation structure defects and high oxygen permeability of an existing ZrB2-SiC ceramic coating system are solved. The oxidation activity and the oxidation consumption are reduced, the service temperature is increased, the oxidation protection effect is enhanced, and the service life is prolonged. After oxidation at 1700 DEG C for 100 min, the accumulated anti-oxidation protection efficiency is 99.809%, the carbon loss rate is 1.032%, and the stable oxygen barrier protection effect at the high temperature area of 1700 DEG C is achieved.

Provided is a process for the quantification and determination of the stable fraction of carbon in a sample of pyrolyzed carbon in anoxic storage. The process comprises pyrolyzing an organic material and measuring the carbon content of a sample of pyrolyzed carbon. A sample of the pyrolyzed carbon is sealed in a vial in an oxygen-free atmosphere, and a mixture of nutrients and microbes is added thereto. The temperature of the vial is controlled. The volume and species of gases evolved over time is measured. The fraction of carbon lost is calculated based on the gases evolved, the carbon content and mass relative to a control sample.

The present invention discloses an ultra-high-strength carbon material and a preparation method thereof, which belongs to the field of carbon material technology. The preparation method comprises the following steps: reinforcing particles, acrylamide, water-soluble sugars, N,N'-methylenebisacrylamide, an initiator and a catalyst are added to deionized water and mixed evenly, and then dried, heat-treated, crushed and ball-milled in sequence to obtain a composite powder; the composite powder is molded and carbonized in sequence to obtain the ultra-high-strength carbon material. The present invention significantly simplifies the production process of graphite block carbon materials by adopting an innovative two-step preparation process, and effectively overcomes the problems of complex process, long production cycle, high raw material cost and difficult control of microstructure in the prior art. The strategy of combining sugar-polyacrylamide hydrogel technology with reinforcing particles is used to greatly improve the carbon yield and reduce the carbon loss caused by gas release during the carbonization process, thereby optimizing the microstructure of the material and improving its mechanical properties, including key indicators such as compressive and flexural strength.

The invention relates to the technical field of sewage treatment, in particular to a carbon source analysis method, device and equipment based on a septic tank and a pipe network and a medium. According to the method, the total carbon loss of the septic tank which is not transferred to a sewage plant in the regional urban water treatment system is calculated, then the first carbon loss of the septic tank consumed for forming greenhouse gas in the total carbon loss of the septic tank is calculated, and the second carbon loss of the septic tank is calculated according to the total carbon loss of the septic tank and the first carbon loss of the septic tank. And calculating the second carbon loss of the pipe network omitted in the pipe network in the same way. According to the analysis, the second carbon loss of the septic tank and the second carbon loss of the pipe network which are left in the septic tank and the pipe network in the sewage transfer process are calculated, and the two carbon losses can be converted into carbon sources in an excavation and recovery mode so as to be used for improving the carbon sources of a sewage plant.

A toner which has a toner particle and silica fine particle A on a surface of the toner particle, wherein a weight average particle diameter of the toner is 4.0 to 15.0 μm, a carbon loss ratio when the silica fine particle A is washed with hexane is 5 to 70%, and a temperature at which a differential coefficient of a nine-point moving average of integrated values integrated from 35° C. reaches 4000 or more for an intensity of an obtained ion having a mass number (M / z) of 207 is 270° C. or higher, when mass spectrometry is carried out at a sampling interval of 0.4 seconds while heating the silica fine particle A under specific conditions.

Provided is a process for the quantification and determination of the stable fraction of carbon in a sample of pyrolyzed carbon in anoxic storage. The process comprises pyrolyzing an organic material and measuring the carbon content of a sample of pyrolyzed carbon. A sample of the pyrolyzed carbon is sealed in a vial in an oxygen-free atmosphere, and a mixture of nutrients and microbes is added thereto. The temperature of the vial is controlled. The volume and species of gases evolved over time is measured. The fraction of carbon lost is calculated based on the gases evolved, the carbon content and mass relative to a control sample.

This application discloses a method for preparing high-strength special carbon spheres, the special carbon spheres themselves, and their applications. The method involves mixing sulfur with polymer spheres and then subjecting them to co-heat treatment. The high affinity of sulfur is used to strip hydrogen elements from the polymer, suppressing carbon loss during carbonization. Subsequent heating and carbonization yields special carbon spheres with high mechanical strength, high carbon yield, and high specific surface area. The crushing strength of the carbon spheres exceeds 50 N, reaching a maximum of 260 N, and the product yield is greater than 70%, reaching a maximum of 91.2%. This method offers advantages such as simple process, low energy consumption, high yield, environmental friendliness, and scalability. Furthermore, the obtained carbon spheres exhibit excellent performance in gas adsorption and separation, as well as catalysis, and are particularly suitable for high-space velocity applications in electronic specialty gas purification and trace impurity gas separation, as well as for industrial catalyst supports.

The present invention discloses a carbon sink calculation method for a metal mine restoration area, which belongs to the field of carbon sink detection technology. The method comprises the following steps: dividing the metal mine restoration area into a plurality of different ecological region quadrats, calculating the sum of carbon reserves in different ecological regions, and recording it as C. E ; Soil samples were collected to assess the impact of soil erosion on carbon storage in the metal mine restoration area. By measuring the amount of soil erosion and the organic carbon content of the surface soil, the carbon loss caused by soil erosion was calculated, which was recorded as C SE Assess the impact of acid mine drainage treatment on carbon emissions in the remediation area. By obtaining the runoff conditions and relevant carbon emission factors in the remediation area, calculate the carbon emissions (GHG) generated by acid mine drainage treatment. E ; Set the measurement period and calculate the total carbon sink ΔC in the metal mine restoration area during the measurement period according to the formula T The carbon sink calculation method of the present invention can provide a comprehensive and quantitative assessment of the total carbon sink capacity of a mine restoration area.

The application discloses a Y2O3-ZrSi2-ZrB2-SiC composite ceramic coating based on low-energy self-heating technology and combined with bionic glass film for synergistic oxygen resistance, and the coating comprises a base layer, a transition layer and a bionic glass layer. Compared with the prior art, the application has the advantages that the application overcomes the problems of existing ZrB2-SiC ceramic coating system, such as oxidation structural defect, high oxygen permeability, and the like. The application reduces oxidation activity and oxidation consumption, improves service temperature, has the advantages of strengthening oxidation protection effect and prolonging working life. After oxidation at 1700 DEG C for 100 min, the cumulative antioxidation protection efficiency is 99.809%, the carbon loss rate is 1.032%, and the application has the effect of stable oxygen resistance protection at 1700 DEG C.

The invention relates to the technical field of coated cutters, and provides a coated hard alloy cutter and a preparation method thereof.The coated hard alloy cutter is characterized in that a hard alloy matrix comprises a core part and a shallow surface layer wrapping the core part, and the whole hard alloy matrix is constructed into a hard area with the core part provided with a two-phase area lower limit or a decarburized phase; and the shallow surface layer is also provided with a toughness area rich in a binding phase, so that the problem that the performance of the toughness area of the matrix is degraded due to carbon loss on the surface of the hard alloy matrix when the coating is deposited on the matrix by adopting a chemical vapor deposition method is effectively avoided. And the generation of the brittle continuous eta phase at the film-substrate interface between the coating and the shallow surface layer is reduced, so that the stress concentration point and crack source distribution between the coating and the substrate are reduced, the formation of the chemical vapor deposition coating with low internal stress and high binding force is facilitated, and the binding strength of the coating and the substrate is remarkably improved.

The utility model belongs to the technical field of feed water treatment, and provides a water collecting tank for preventing carbon loss of an activated carbon filter, which comprises a water collecting tank main body and baffles arranged on two sides of the water collecting tank main body, the first end of the water collecting tank main body is hermetically fixed with a tank wall, and the second end of the water collecting tank main body is communicated with a drainage channel; the baffle is arranged in the length direction of the water collecting tank body, the two ends of the baffle are fixed to the pool wall and the drainage channel respectively, the baffle and the water collecting tank body are arranged in a spaced mode, the top end of the baffle is higher than the top end of the side wall of the water collecting tank body, and the bottom end of the baffle is lower than the top end of the side wall of the water collecting tank body. According to the water collecting tank, the baffles are arranged on the two sides, the principle that the density of activated carbon is smaller than that of water is utilized, powdered activated carbon floating on the water surface can be intercepted on the outer sides of the baffles, separation of backwashing wastewater and the activated carbon is achieved, carbon loss can be effectively prevented, the overall operation cost of a water plant is reduced, and the water collecting tank has certain flexibility and universality.

The utility model discloses an ecological model of carbon loss and gain of grazing grassland ecosystem, which couples carbon loss caused by grazing, increase of soil organic carbon pool caused by animal excrement and carbon loss caused by animal trampling plant by establishing grazing carbon balance model and animal trampling carbon loss model, so as to obtain actual carbon loss and gain of grassland ecosystem. In the application, the utility model fully considers the factors of animal grazing, animal excretion and animal trampling in the whole grazing process, perfects the influence of disturbance factors of whole grassland ecosystem on vegetation, reduces the uncertainty of regional grassland carbon cycle simulation and improves the accuracy of results. Therefore, the utility model has high accuracy.

The invention discloses an application of a COF structure confinement metal catalyst in an electro-catalysis carbon dioxide reduction reaction, and relates to the technical field of electro-catalysis carbon dioxide reduction. The COF structure confinement metal catalyst comprises a cationic polymer with a crystalline periodic distribution network structure and a metal catalyst existing in the cationic polymer through a confinement effect, so that the electrostatic repulsion effect of the COF structure supported metal catalyst cooperates with the confinement effect to electrically catalyze a carbon dioxide reduction reaction. The COF structure confinement metal catalyst is applied to electrocatalytic carbon dioxide reduction reaction, hydrogen evolution side reaction under the acidic electrolyte condition and the corrosion degree of the metal catalyst can be remarkably reduced, and then the carbon loss and energy consumption of carbon dioxide are reduced.

The application relates to the technical field of ecological environment protection of electric power engineering, and discloses a carbon storage disturbance loss repair regulation method during power transmission and transformation engineering construction period, which establishes a carbon storage space-time evolution curve and anchors a recovery datum by analyzing construction procedures; all carbon storage steps and sudden drop nodes are identified and the total carbon loss is quantified; ecological restoration measures suitable for site conditions are adapted and a disturbance-repair space-time coupling model is constructed; the repair intervention time is inversely calculated with the constraints of sufficient coverage of carbon loss and recovery to the datum before disturbance, prepositioned or instant repair is implemented; the carbon storage curve is regenerated and the stage recovery effect is checked, and if the effect is not up to the standard, the repair scheme is optimized; all drop nodes in the whole construction period are iteratively regulated until the carbon storage in each stage is recovered to the level before disturbance; the application realizes accurate control and whole-cycle zero-carbon ecological influence of carbon storage during the power transmission and transformation engineering construction period, and solves the technical defects of traditional methods that only smooth mutations and have stage carbon loss.

This invention discloses a method for rapidly assessing the carbon stability of phytoliths based on silicon-carbon synergistic release behavior, belonging to the fields of biogeochemistry and environmental science. The method includes: obtaining phytolith samples and determining their initial silicon and carbon content; dissolving them in an alkaline solution; measuring the released silicon and carbon content in the solution to simulate actual silicon weathering and carbon loss; calculating a stability evaluation index based on the carbon and silicon release ratios, and assessing the carbon stability of the phytoliths accordingly. This method eliminates the need for long-term cultivation or complex environmental simulation, enabling rapid and quantitative assessment of carbon stability in phytoliths from different sources. It overcomes the problems of high cost, long cycle time, poor comparability, and lack of structural references in existing technologies. It is applicable to the research and application of phytolith carbon in soil, plant residues, and sediments, providing a new technical means for carbon cycle and carbon sink research.

Provided is a process for the quantification and determination of the stable fraction of carbon in a sample of pyrolyzed carbon in anoxic storage. The process comprises pyrolyzing an organic material and measuring the carbon content of a sample of pyrolyzed carbon. A sample of the pyrolyzed carbon is sealed in a vial in an oxygen-free atmosphere, and a mixture of nutrients and microbes is added thereto. The temperature of the vial is controlled. The volume and species of gases evolved over time is measured. The fraction of carbon lost is calculated based on the gases evolved, the carbon content and mass relative to a control sample.

The invention discloses a combustion carbon loss and thermal efficiency optimization method based on carbon content inversion of CO concentration. According to the method, the carbon content of fly ash and the carbon content of slag are inversed through CO concentration data in a DSC database, a KAN-FM neural network model capable of obtaining a better result in a small sample is adopted, after a thermal efficiency value is calculated based on an inversion result, the relation between the CO concentration and the thermal efficiency is further obtained, and combustion carbon loss and the thermal efficiency are optimized. The method has the advantages that the relation between the CO concentration and the fly ash and slag carbon content is considered and established, the boiler thermal efficiency is calculated through the counter balance method, the relation between the CO concentration and the combustion carbon loss and the boiler thermal efficiency is established, and the problem that the thermal power plant efficiency is difficult to optimize is effectively solved.

The invention discloses a remote sensing image monitoring method and system for soil carbon loss in a water erosion area, and belongs to the field of remote sensing image processing.The method comprises the steps that spectral features are extracted through a hyperspectral image, and a model is constructed through PLSR and SVM algorithms to invert the organic carbon content of soil; superposing the carbon content and the erosion strength grading graph, calculating the carbon loss rate and establishing a coupling relationship; constructing source and sink indexes in combination with topographic parameters, and dividing an erosion carbon output region, a migration transition region and a deposited carbon enrichment region; carbon content changes before and after the snow melting period and the rainy season are compared, and the seasonal carbon loss amount is calculated.

The invention discloses a method for controlling the carbon content of nickel-based high-temperature alloy powder prepared from coarse powder return scraps, which comprises the following steps of: respectively detecting the carbon content and the oxygen content of the coarse powder return scraps and a master alloy bar before smelting, and calculating the average carbon content and the average oxygen content according to a charging ratio; determining the carbon loss in the melt in combination with a carbon-oxygen reaction mechanism under the smelting condition; with the set target carbon content as the reference, the required theoretical carbon supplementing amount is calculated, and a stepped carbon supplementing scheme is determined according to the carbon content level of the master alloy bar; the carbon supplementing raw material is graphite electrode fragments which are mechanically broken and wrapped by nickel foil, the graphite electrode fragments, coarse powder return scraps and mother alloy bars are added into a crucible together, vacuum induction melting is carried out under the conditions that the vacuum degree ranges from 1.0 Pa to 2.0 Pa and the temperature ranges from 1500 DEG C to 1600 DEG C, and powder is prepared through a gas atomization technology. And after the powder is prepared, the carbon content of the powder is detected, and a carbon supplementing scheme of a subsequent furnace is corrected according to a result, so that closed-loop control is realized. According to the method, the problem that fluctuation of the carbon content is difficult to control in the coarse powder return scrap powder preparation process can be solved, stable and accurate control over the carbon content of the nickel-based high-temperature alloy powder is achieved, the stability of components among powder batches is effectively improved, and the method is suitable for a VIGA powder preparation technology of coarse powder-containing return scraps.

The present application relates to a kind of vortex carbon pump, especially, a kind of low carbon loss vortex carbon pump for activated carbon conveying, comprising pump shell and upper cover;The upper cover can be detachably fixed on the top of pump shell, the top center of the upper cover is fixed with sleeve, the top of the sleeve is fixed with motor, the transmission shaft is rotatably arranged in the sleeve by bearing, the top of the transmission shaft is connected with motor output shaft, and the bottom of the transmission shaft is inserted into the pump shell by penetrating upper cover downwards.The present application is aimed at the pain point of traditional vortex pump flow channel, and the impeller design of high axial height and wide flow section is innovatively used;By increasing the flow area, the relative linear velocity of slurry in the impeller is effectively reduced, and the violent impact and grinding between activated carbon particles and blades and particles are weakened from the source;With the design of streamlined curved blade and optimized inlet angle, vortex and dead zone in flow channel are completely eliminated, and repeated tumbling and crushing of particles in local area are avoided.