54 results about "Coal product" patented technology

The invention provides a biolipid hydroisomerization catalyst and a preparation method thereof, the biolipid hydroisomerization catalyst comprises a carrier and active components, and the active components comprise Pt, Ce and La. According to the present invention, the synergistic effect between the rare earth metals Ce and La and the noble metal Pt is utilized to optimize the performance of the catalyst, the prepared hydroisomerization catalyst has characteristics of high activity and high stability, unsaturated hydrocarbon and impurities in the bio-based deoxidized oil can be effectively removed so as to generate the high-quality fuel, the hydroisomerization activity of the catalyst is improved, and the hydroisomerization efficiency is improved. The cracking selectivity is reduced, and the different direct proportion of aviation kerosene products is increased.

The invention relates to the technical field of coal engineering, in particular to a pulverized coal ash content detection method and system based on image recognition, and the method comprises the following steps: collecting a coal sample and preprocessing the coal sample; coal sample target images corresponding to different modes are obtained for the preprocessed coal sample; a trained detection model is obtained, the detection model is used for outputting a gray content predicted value and a gray content category based on an input image, the detection model comprises a feature adjustment module, a feature extraction module, a feature fusion module and an analysis output module which are connected in sequence, and the feature extraction module comprises a plurality of convolutional layer modules and a Transform self-attention layer module; each module in the feature extraction module is connected with the feature fusion module, and the analysis output module is used for outputting an ash content predicted value and an ash content category; and inputting the coal sample target images corresponding to different modes into the trained detection model to obtain ash content predicted values and ash content categories of the collected coal samples. By utilizing the method disclosed by the invention, the ash content of the slack coal product can be detected more quickly and accurately.

The embodiment of the invention provides a coke product cooling system and method.The coke product cooling system comprises a coke discharging device, a cold coal loading device, a cooling device and a screening device, and an inlet of the coke discharging device is used for being connected with an outlet of a coke oven so as to obtain a coke product which is subjected to coking and to be cooled and has the first particle size from the coke oven; the cold coal loading device is used for loading cooled coal with a second particle size, and the second particle size is smaller than the first particle size; an inlet of the cooling device is respectively connected with an outlet of the coke discharging device and an outlet of the cold coal loading device, the cooling device is used for receiving and mixing the coke product and the coal material, so that the coke product is cooled by the coal material, and the coal material is heated by the coke product to form a coal product; an inlet of the screening device is connected with an outlet of the cooling device and used for obtaining and screening coke products and coal products of different particle sizes. And in the cooling link of the coke product, the heat of the coke product is efficiently recovered, the environmental pollution is low, the coal product can be obtained, and the benefit is better than that of waste heat recovery power generation.

This application belongs to the field of coal product testing and analysis technology, and particularly relates to a method, device, and computer equipment for predicting coal sample test values. The method, device, and computer equipment provided in this application, based on spectral analysis, predict coal sample test values ​​by collecting near-infrared and laser-induced breakdown spectra of the original coal sample, followed by wavelet decomposition and dimensionality reduction to generate a feature fingerprint matrix. This achieves effective fusion and dimensionality reduction of the two spectral data, preserving key spectral features of the organic and inorganic elements in the coal sample, providing fundamental data for subsequent model training. Furthermore, a genetic algorithm is used to optimize the feature weight vector of the feature fingerprint matrix to reconstruct the feature space. Abnormal samples are eliminated by comparing the ash content prediction with a preset threshold, highlighting the key spectral features for test value prediction. By eliminating interfering samples, the specificity of the feature space and the reliability of the data are improved.

Embodiments described herein generally relate to processes for making carbon quantum dots (CQDs). A method includes adding a coal product, a H2O2 solution, and water to a reactor. The coal product, the H2O2 solution, and the water form a mixture. The reactor is heated to a temperature of about 60°C to about 100°C to catalyze the carbon quantum dot (CQD) production mechanism within the mixture to form a CQD. The CQD is collected. The CQD includes carbon spheres with a diameter of about 15 nm or less. A controller may be programmed to perform the method.

An oil-in-water emulsion comprising an asphalt and purified coal product (PCP) is provided, wherein the PCP is in particulate form, and wherein at least about 90% by volume (% v) of the particles are no greater than about 25 μm in diameter; wherein the PCP has an ash content of less than about 10 wt %. Methods are also provided for the use of PCP as a stabilizing additive in the manufacture of asphalt containing emulsions.

The invention provides a carbon footprint calculation method based on a coal product, which comprises the following steps: S1, determining a carbon footprint system boundary: dividing the whole life cycle of the coal product into stages of raw coal mining, raw coal short-distance transportation, raw coal washing, coal product selling and outward transportation to a coal consumption enterprise and the like, and starting from the raw coal mining; according to the carbon footprint calculation method based on the coal product, auxiliary links such as ventilation system energy consumption in a raw coal mining stage, underground support material production and transportation, coal cleaning plant wastewater treatment facility energy consumption, roadway construction material transportation and the like are brought into system boundaries; by refining sub-links and establishing an independent monitoring accounting sub-model, a full-life-cycle carbon emission source is fully covered, and the problem of system boundary integrity deficiency is solved, so that the actual carbon emission of a coal product can be truly reflected.

The invention discloses a method for preparing high-density coal-based jet fuel by taking fluorene and benzaldehyde as raw materials. The method comprises the following specific steps: 1, reacting a fluorene compound with benzaldehyde under the catalysis of alkali to generate a compound with a tetracyclic structure; and 2, dissolving the compound with the tetracyclic structure in an alkane solvent, and carrying out hydrogenation in a hydrogenation kettle or a fixed bed under the action of a metal catalyst to generate the high-density coal-based jet fuel. The high-density coal-based jet fuel can be completely prepared from the fluorene compound and benzaldehyde extracted from coal tar components in a high-yield mode through a two-step method, the density of the high-density coal-based jet fuel is larger than 0.90 g / cm < 3 >, and the high-density coal-based jet fuel is an aviation kerosene alkane compound with excellent performance; according to the whole route, the coal base is used as the raw material, the raw material source is wide, the cost is low, industrial production is more facilitated, and high-end and high-value coal products are achieved.

The application discloses a coal block crusher cleaning device, relates to the technical field of coal mine production, and improves the problems that if the effective interval adjustment of the brush plate is difficult, on one hand, it is difficult to maintain stable cleaning strength only by intermittent extrusion force, leading to incomplete cleaning of coal cinder, on the other hand, the coal cinder that is not cleaned in time can be mixed into a subsequent processing flow, affecting the quality of coal products, reducing the market competitiveness of products and the like, and comprises a box body, the cleaning mechanism comprises an electric cylinder and a push plate, and the other side surface of the push plate is fixedly provided with brush strips and spraying pipes respectively, the application can stably move the push plate installed at the output end through the cleaning mechanism, the brush strips and the spraying pipes connected with the push plate follow synchronously, through the linkage design, the brush strips and the spraying pipes can be accurately close to the crushing mechanism, efficient cleaning and flushing of residual materials on the surface of the crushing equipment are realized, and the cleaning effect is obviously improved.

The present application provides a gasification slag extraction and recycling system and process to solve the problems of complex process, low recovery rate, high cost, and failure to achieve ideal utilization value, and inability to effectively improve the comprehensive utilization efficiency of gasification slag. The system includes a clean water pool, a gasification slag stirring pool, a first vibrating screen, a first sorting machine group, a second sorting machine group, and a second filter press; the discharge port of the gasification slag stirring pool is connected with the feed port of the first vibrating screen; the under-screen discharge port of the first vibrating screen is connected with the feed port of the first sorting machine group; the coarse concentrate discharge port of the first sorting machine group is connected with the feed port of the second sorting machine group; the concentrate discharge port of the second sorting machine group is connected with the second filter press. Glass crystals, tailing coarse particles, high-ash, fine tailings, fixed carbon, high-heat quality coal, and fine coal products are obtained by separating and extracting from the gasification slag using the system, which can be directly sold or recycled through a recycling production line.

The application discloses a filter pressing method for reducing the water content of filter pressed coal products, and applies a centrifugal filter pressing system to carry out filter pressing, wherein step 1, coal slurry is sent into a centrifuge through a centrifuge material stabilizing barrel, and centrifugal liquid is sent into a centrifugal liquid barrel after being treated by the centrifuge; step 2, coarse mixing is carried out in the centrifugal liquid barrel; and step 3, the centrifugal liquid after coarse mixing is pumped into a first-stage concentration tank, overflow liquid of the first-stage concentration tank is sent into a second-stage concentration tank, and underflow of the first-stage and the second-stage is sent into a filter press feeding barrel through an underflow pump, material in the filter press feeding barrel is sent to a plate-and-frame filter press through a filter press feeding pump, filter pressing is carried out through the plate-and-frame filter press, and filter pressing liquid is sent into the second-stage concentration tank, in the process, anionic PAM reagent is added to the first-stage concentration tank, the second-stage concentration tank and corresponding material stabilizing barrels and pipelines, and filter pressing is completed. Through the method, the purpose of reducing the water content of filter pressed coal is achieved, and economic benefits are improved.

The utility model belongs to the technical field of coal chemical processing, and particularly relates to a coal product raw material stirring device which comprises a first stirring machine, a second stirring machine and a dispersing device, and a discharge port of the first stirring machine is connected with a feed port of the second stirring machine through the dispersing device; the dispersing device comprises a barrel, a dispersing part and a driver, the barrel is connected between a discharge port of the first stirrer and a feed port of the second stirrer, the dispersing part is rotationally connected into the barrel, the rotating axis of the dispersing part is coaxial with the barrel, the driver is arranged on the outer side of the barrel and is in transmission connection with the dispersing part, and the driver is used for driving the dispersing part to rotate; according to the stirring device, the dispersing device is arranged between the two stirring machines, and the dispersing device can whip raw materials discharged by the previous stirring device, so that lump-shaped raw materials are dispersed, the raw materials are prevented from being discharged into the next stirring machine to be stirred in a lump form, and the stirring quality of the whole stirring device is improved.

The invention discloses an artificial intelligence control system for coal product inspection, which comprises a coal inspection system, an inspection data preprocessing system, a coal inspection parameter analysis system, an artificial intelligence remote control system and a model establishment analysis system, and the inspection data preprocessing system is connected with the coal inspection parameter analysis system. The artificial intelligence control system for coal product inspection is provided with the coal inspection system, the coal inspection parameter analysis system, the artificial intelligence remote control system and the model establishment analysis system, various parameters of coal can be conveniently and intensively inspected, the coal inspection effect is improved, the accuracy is higher, and the coal inspection efficiency is improved. Remote control can be carried out through artificial intelligence, a model is established to carry out simulation analysis on detected data, detected parameters are preprocessed, analyzed and evaluated, and whether the coal quality is qualified or not is rapidly detected.

The invention relates to the technical field of clean and efficient utilization of coal, and discloses a low-rank coal mild modification tackifying method based on a reducing gas and an organic solvent, which comprises the following steps: pre-activating the organic solvent and a catalyst in a reducing gas atmosphere; cooling, adding low-rank coal powder with the water content of 3.0-35.0 wt%, and mixing with the pre-activation system; carrying out hydrogenation reaction on the prepared mixture, namely introducing reducing gas into the system to the initial pressure in the initial heating stage, and then continuously heating to the final reaction temperature of 330-390 DEG C to carry out constant-temperature reaction; and finally cooling, separating and drying the product to obtain the modified coal product. According to the present invention, with the gas phase and liquid phase synergistic hydrogenation strategy, the accurate control of the coal depolymerization and the hydrogenation stability is achieved, the excellent caking property is given to the low-rank coal under the mild condition, the reaction condition is mild, the energy consumption is low, the high water content coal can be directly utilized, and the economy is improved.

An oil-in-water emulsion comprising an asphalt and purified coal product (PCP) is provided, wherein the PCP is in particulate form, and wherein at least about 90% by volume (% v) of the particles are no greater than about 25 μm in diameter; wherein the PCP has an ash content of less than about 10 wt %. Methods are also provided for the use of PCP as a stabilizing additive in the manufacture of asphalt containing emulsions.

The utility model relates to the technical field of wind power coal dressing equipment, and discloses modularized coal mine underground wind power coal dressing equipment which comprises a collecting assembly, moving assemblies are fixedly connected to the two sides of the collecting assembly, a sorting assembly is arranged at the upper end of the collecting assembly, and the upper end of the sorting assembly is fixedly connected with one end of a sorting pipe. According to the modularized underground coal mine wind power coal separation equipment, the first separation hopper, the second separation hopper and the third separation hopper correspond to the first separation plate, the second separation plate and the third separation plate one by one, gangue and coal can be accurately classified and separated, wind power generated by the anti-explosion axial flow wind energy generator is blown out through the air blowing opening and penetrates through the air holes of the separation plate bodies, and therefore the separation efficiency is improved. Under the cooperation of wind power and vibration screening, raw coal is sequentially separated on a multi-group sorting plate, the coal product quality and the resource utilization rate are effectively improved, efficient sorting of coal and gangue is achieved, modular design is adopted for equipment, and equipment failures can be rapidly handled or components can be rapidly replaced in the underground limited space.

The present application relates to the technical field of coal mine screening, and specifically discloses a coal mine screening device for coal mining, which comprises a rack, a screening unit, a driving unit and a dredging unit. The dredging unit is arranged between two layers of screen meshes, and the paddle thereof is periodically reciprocatingly rotated under the driving of the driving member to continuously stir the material on the second screen mesh, effectively breaking the arching effect of small coal blocks and ensuring the smoothness of the screening channel. A flow channel and a jet groove are arranged in the rotating shaft and the paddle of the dredging unit, and when the paddle is rotated to the optimal angle perpendicular to the screen mesh, the gas supply member instantaneously sprays a gas flow to the mesh hole, powerfully removing foreign matters and sticky coal sludge stuck in the mesh hole and effectively solving the problem of screen mesh blockage. Meanwhile, the capillary water film formed between the sticky coal sludge and the surface of the screen mesh is broken, the separation and shedding of water are accelerated, the water content of the small coal blocks screened finally is effectively reduced, and the quality of the coal product is effectively improved.

The invention discloses a low-rank coal drying and grading utilization method and system, and the method comprises the steps: carrying out drying treatment on low-rank raw coal to obtain upgraded coal; carrying out solid-solid separation treatment on the upgraded coal to obtain a dry coal product and dry coal powder less than or equal to 0.5 mm; the dry pulverized coal is introduced into an airflow classifier to be subjected to classification treatment, and dry fine pulverized coal larger than 74 micrometers and dry superfine pulverized coal smaller than 74 micrometers are obtained; blending the dried fine coal powder and undried raw coal according to different proportions to obtain a coal product with a specific heat value; and mixing the dried superfine pulverized coal with pulverized coal smaller than 400 [mu] m, and adding water and an additive to prepare a coal water slurry product. The heat value of coal can be effectively increased, and the problem that fine coal powder is difficult to treat and utilize is solved.

The application discloses a water-coal separation device matched with a TBM rear end and a circulating method, relates to the technical field of TBM coal connection processes, and comprises a separation unit, a stirring assembly fixed to the top of a flow guide shell, and a first conveying assembly arranged in the flow guide shell. The application has the beneficial effect of effectively dealing with the uneven characteristics of TBM coal products and gangue particle sizes in the water-coal mixture generated by the TBM process by adopting the shunt pipe and the stirring assembly, and realizing efficient separation.

The invention discloses a production method of high-alumina fly ash and a method for extracting aluminum from aluminum-rich coal, and relates to the technical field of valuable metal extraction.The production method of the high-alumina fly ash comprises the following steps that S10, raw coal, a silicon collecting agent and auxiliaries are mixed, reverse flotation is conducted, tailings are collected, and an aluminum-rich coal product is obtained; s20, the aluminum-rich coal product is subjected to centrifugal sedimentation, filter pressing and drying, and a coal cake is obtained; and S30, burning the coal cake to obtain the high-alumina fly ash. According to the method, the aluminum-rich coal is used as a raw material, and after the aluminum-rich coal is subjected to reverse flotation desiliconization, the content of combustible bodies is increased, so that the calorific value of the coal is increased, part of silicon is removed, and the aluminum-silicon ratio in the coal ash formed after the coal is fired is increased.

The present invention discloses a method for producing aviation kerosene. The method comprises the following steps: (1) aviation kerosene raw materials and hydrogen enter a mixing container, gasify, and obtain a gaseous mixture; (2) the gaseous mixture enters a first reactor after being pressurized, wherein the gaseous components are discharged upward from the first reactor, and the liquid components are subjected to hydrogenation reaction downward, and the first reactor effluent is obtained and discharged from the bottom of the first reactor; (3) the gaseous components are discharged from the first reactor and enter a second reactor, undergo a hydrogenation desulfurization reaction, and obtain a second reactor effluent; (4) the first reactor effluent and the second reactor effluent are stripped to obtain an aviation kerosene product. The present invention can produce high-quality aviation kerosene products with high smoke point and good lubricity under the conditions of simple process, low energy consumption, and low cost.

The present invention provides a clean coal and a preparation method thereof, belonging to the technical field of coal products. The method comprises the following steps: (1) dispersing starch in water, stirring evenly, and then fully gelatinizing the mixture; (2) adding a sulfur-fixing agent to the gelatinized liquid, and centrifuging to obtain a starch gelatinized liquid containing the sulfur-fixing agent; (3) crushing the coal to obtain coal particles; (4) transporting the coal particles to a fluidized bed, spraying the starch gelatinized liquid containing the sulfur-fixing agent on the particles while the particles are suspended, and drying to obtain coal particles adsorbed with the sulfur-fixing agent and gelatinized starch. The method dissolves a soluble sulfur-fixing agent in the starch gelatinized liquid, and then in situ adsorbs the starch liquid onto the coal particles, so that the soluble sulfur-fixing agent is uniformly adsorbed into the coal. The sulfur in the coal reacts efficiently in situ with the adsorbed soluble sulfur-fixing agent, effectively improving the combustion efficiency and sulfur-fixing effect of the coal, while not causing any negative effects on the boiler.

Embodiments described herein generally relate to processes for making carbon quantum dots (CQDs). A method includes adding a coal product, a H2O2 solution, and water to a reactor. The coal product, the H2O2 solution, and the water form a mixture. The reactor is heated to a temperature of about 60°C to about 100°C to catalyze the carbon quantum dot (CQD) production mechanism within the mixture to form a CQD. The CQD is collected. The CQD includes carbon spheres with a diameter of about 15 nm or less. A controller may be programmed to perform the method.

The invention discloses a coal product credible traceability method based on a block chain technology and a related device. The method comprises the steps that participants in all links of coal product traceability submit data of the participants to a transaction pool; when participants in each link receive and broadcast transactions by using the P2P network, data are packaged into blocks, and the blocks are linked to the tail of a block chain to form a block network; all information of the business coal industry chain is traced through the block network, the method and the related device can obtain complete traceability information during traceability, and the system flexibility is high.

A process for manufacturing a liquid suspension of a purified coal product (PCP) is provided. The process comprises the steps of providing a solid PCP wetcake, wherein the PCP is comprised of coal particles having an average particle size of at most 10 microns and a d90 of less than 100 microns, an ash content of less than around 8%m, and a moisture content of at least 20%m; and inducing a phase inversion of the solid PCP wetcake by addition of a minor amount of an emulsifier. Compositions, pumpable liquid suspensions and asphalt emulsions comprising the suspensions are also provided.

A method for producing coke and one or more volatile products includes the following steps: (i) providing a purified coal product (PCP), wherein the PCP is in particulate form and wherein at least about 90% v of the particles have a diameter not greater than about 100 microns; wherein the PCP has an ash content of less than about 10% m and a water content of less than about 5% m; (ii) combining the PCP with a liquid residual oil to produce a combined solid-liquid blend, wherein the solid-liquid blend comprises at least about 0.1% m and at most about 30% m of the PCP; (iii) subjecting the solid-liquid blend to a temperature in excess of 375 °C for a period of time sufficient to cause at least 1% of the PCP particles to crack to produce one or more volatile products, and (iv) producing coke from the product of step (iii).

A method of processing coal for use as a carbon reductant in the manufacture of silicon. The method comprises the steps of: crushing raw coal in a crusher, conveying the crushed coal beneath an electromagnet to remove ferromagnetic material, passing the coal onto a desliming screen, adding water and vibrating to remove particles less than 3 mm in size. The washed coal is then conveyed to a multi-deck screen to remove material over 14 mm in size. Material is transferred to an inclined frustoconical cyclone, mixed with a magnetite and water suspension, denser material comprising impurities is collected in the lower end underflow and less dense coal product containing less ash is collected in the overflow. The density of the magnetite and water medium is monitored and controlled such that the cyclone overflow output has an ash content of equal to or below 1.5 %. Magnetite is removed from the coal product by electromagnet and dewatered to produce a final product with an ash content less than or equal to 1.5 %.

The utility model relates to the technical field of middling coal re-separation, in particular to middling coal separation equipment and a coal separation system. The utility model provides middling coal separation equipment which is used for middling coal re-separation, and middling coal raw materials contain middling coal blending medium liquid. The middling coal separation equipment comprises a medium drainage device, a mixing chamber, a conveying system and a separation device, the feeding end of the mixing chamber is communicated with the oversize material discharging end of the medium drainage device; and the conveying system is used for conveying the middling coal re-separation medium liquid into the material mixing chamber and conveying the materials in the material mixing chamber into the separation device. The middling coal separation equipment is combined with an original raw coal separation system to re-separate middling coal products of the raw coal separation system, clean coal in the middling coal products is recycled, scarce coal resources are fully utilized and protected, and huge economic benefits are created.

The invention discloses a method for preparing a trace element humic acid fertilizer with high fulvic acid content by activating weathered coal based on a quaternary metal hollow carbon catalyst. The preparation method comprises the following steps: firstly, preparing a Fe / Zn / Ce co-doped hollow carbon coated ZIF-67 catalyst by a hydrothermal-calcination method; then, weathered coal and compound alkali are subjected to first-time medium-temperature activation and then mixed with a ternary oxidant system and a catalyst for second-time medium-temperature activation, and finally, a weathered coal product is compounded with a bonding slow-release agent. The prepared catalyst has a hierarchical porous structure and rich active sites, a composite oxidant system generates a synergistic oxidation effect, the humic acid content, the fulvic acid content and the trace element content in the weathered coal are remarkably improved by a two-step medium-temperature activation process, the fertilizer efficiency of the product is lasting, and the catalyst has remarkable economic and environmental benefits. The obtained fertilizer is particularly suitable for field crops such as corn in brown soil and saline-alkali soil, can remarkably promote crop growth and improve the soil structure, and has remarkable economic and environmental benefits.

This invention belongs to the field of efficient coal conversion and utilization technology, specifically a method for modifying coal using a solvothermal method and the modified coal. Coal is mixed with an organic solvent in a sealed container for heat treatment, followed by vacuum distillation to remove the solvent. After cooling, modified coal is obtained. During the heat treatment, solvent molecules penetrate and act on the macromolecular network of the coal, selectively breaking weak chemical bonds such as aliphatic side chains and ether bonds. This moderately dissociates and activates the inherent three- to five-ring aromatic clusters in the coal, forming a colloidal precursor rich in active small molecules. Then, direct vacuum distillation occurs, resulting in mild structural rearrangement and physical cross-linking, ultimately forming a uniform, dense, and highly adhesive solid modified coal product.