18 results about "Carbon loss" patented technology

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.

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.

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 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 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 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.

This invention discloses a method for optimizing combustion carbon loss and thermal efficiency based on CO concentration-based carbon content inversion. It uses CO concentration data from a DSC database to invert the carbon content of fly ash and slag, employing a KAN-FM neural network model that yields better results with small samples. Based on the inversion results, the thermal efficiency value is calculated, and the relationship between CO concentration and thermal efficiency is further obtained to optimize combustion carbon loss and thermal efficiency. The beneficial effects of this invention are: it not only establishes the relationship between CO concentration and the carbon content of fly ash and slag, but also calculates boiler thermal efficiency through an inverse equilibrium method, establishing the relationship between CO concentration, combustion carbon loss, and boiler thermal efficiency, effectively solving the problem of difficult efficiency optimization in thermal power plants.

The present application belongs to the technical field of organic electrochemical synthesis, and discloses a 5-hydroxymethylfurfural droplet microfluidic in-situ extraction electro-oxidation method. In view of the problems that the existing 5-hydroxymethylfurfural is prone to Cannizzaro disproportionation and self-polymerization degradation in a strong alkaline electro-oxidation system, which leads to increased carbon loss and decreased electrode performance, the present application uses an alkali-resistant organic solution containing 5-hydroxymethylfurfural as a dispersed phase, and a strong alkaline aqueous solution containing electrolyte as a continuous phase, which are introduced into a droplet microfluidic electrochemical reactor respectively, so that the dispersed phase forms a droplet flow pattern in the continuous phase. During the reaction process, 5-hydroxymethylfurfural is continuously extracted into the continuous aqueous phase through the droplet interface, and electrochemical oxidation occurs on the electrode surface to generate 2,5-furan dicarboxylate enriched in the aqueous phase. The present application is conducive to maintaining a low steady-state concentration of free 5-hydroxymethylfurfural in the strong alkaline continuous phase, thereby inhibiting substrate degradation, reducing carbon loss and improving the Faraday efficiency of the target product.

A toner comprising a toner particle and a 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; the silica fine particle A comprises a silicone oil and a carbon loss ratio when the silica fine particle A is washed with hexane is 5 to 70%; and an area of each peak obtained in a solid-state CP / MAS 29Si-NMR measurement of the silica fine particle A and of the silica fine particle A after washing thereof with hexane is in a specific range.

This invention provides a carbon-enhancing, carbon-stabilizing, and carbon-retaining agent for sandy soils and its preparation method. The carbon-retaining agent comprises fermented plant straw solids and water. The preparation method of the fermented plant straw solids involves preparing a slurry, enzymatically hydrolyzing the slurry using pectin methyl esterase, xylanase, α-amylase, and α-glucosidase, fermenting with photosynthetic bacteria to prepare a fermentation broth, and drying. The preparation method of the carbon-enhancing, carbon-stabilizing, and carbon-retaining agent involves mixing the fermented plant straw solids and water before adding the carbon-enhancing, carbon-stabilizing, and carbon-retaining agent to the sandy soil. This carbon-retaining agent can introduce organic carbon into the soil, and through the synergistic effect of plant fibers and pectin, it can reduce the loss of organic carbon caused by water erosion, allowing organic carbon to be retained in the soil for a longer period of time, thus achieving the purpose of increasing and stabilizing carbon.