105 results about "Bottom ash" patented technology

The invention relates to the technical field of roadbed materials, in particular to a composite filling material and a preparation method and application thereof. The composite filling material provided by the invention is prepared from the following raw materials in parts by weight: 18 to 26 parts of pretreated phosphogypsum, 30 to 45 parts of pretreated household garbage incineration bottom ash, 8 to 18 parts of alkaline excitation material, 6 to 20 parts of aluminum-silicon material, 5 to 25 parts of aggregate and 1 to 4 parts of sodium sulfate aqueous solution, the pretreatment of the phosphogypsum comprises lime milk aging treatment; the pretreated household garbage incineration bottom ash comprises gelation active fine powder and structural aggregate. The composite filling material formed by taking the ardealite, the household garbage incineration bottom ash, the alkaline excitation material and the aluminum-silicon material as main raw materials is high in industrial solid waste mixing amount, stable in performance and environment-friendly, reduces the pollutant leaching risk, is suitable for roadbed structures such as an embankment filling layer, a semi-rigid base layer and a flexible subbase layer, and has a wide application prospect. And the benefit is obvious.

The invention provides a boiler tail flue gas waste heat recovery equipment front bottom accumulated dust cleaning device which comprises a dust collecting assembly and a dust collecting assembly, the dust collecting assembly comprises a dust collecting box, a dust collecting bin and a negative pressure bin are arranged in the dust collecting box, an air inlet and an air outlet are formed in the side wall of the dust collecting box, a filtering piece is arranged between the dust collecting bin and the negative pressure bin, and a negative pressure fan is arranged in the negative pressure bin; the sweeping assembly comprises a dust collection hose, a hard pipe, a handheld pipe, an equipment bin, a dust collection cover, a servo motor and a brush head, the output end of the hard pipe is communicated with the air inlet through the dust collection hose, the handheld pipe is connected to the hard pipe through a connecting piece, the equipment bin is arranged at the end of the handheld pipe, the dust collection cover is arranged in the equipment bin, and the servo motor is arranged in the equipment bin; the brush head is arranged in the dust collection cover and connected with the servo motor, and the input end of the hard pipe is communicated with an inner cavity of the dust collection cover. The device can remarkably reduce the labor intensity of manual cleaning, solves the problem that dead corners are difficult to touch in a traditional mode, and improves the thoroughness of cleaning and the working efficiency.

The present application relates to coal mine sealing fire prevention and carbon sequestration technology field, especially to a kind of adsorption sealing fire prevention and extinguishing material and its application.The adsorption sealing fire prevention and extinguishing material includes porous carrier and organic amine;The preparation method of the porous carrier includes the following steps: mixing garbage bottom ash and slag uniformly, to obtain mixture material;Surfactant is dissolved in water, stirring and foaming, then adding alkali activator and mixing uniformly, to obtain alkaline foaming liquid;The alkaline foaming liquid is mixed with the mixture material to obtain foaming slurry;The foaming slurry is cured at room temperature, to obtain the porous carrier;The organic amine accounts for 5wt%-25wt% of the mass of the foaming slurry.The present application not only takes environmental protection, low cost, simple preparation, but also can seal gob air leakage channel at the same time, and adsorb carbon dioxide, when coal mine fire occurs, ambient temperature rises, and the adsorbed CO2 can be promptly desorbed, to achieve the effect of fire prevention.

The invention relates to the technical field of garbage incinerator devices, in particular to a CFD garbage incinerator for improving the combustion efficiency through primary air and secondary air. The system comprises a garbage incinerator, a comburent feeder arranged on one side of the garbage incinerator, a cyclone separator, a smoke dust remover, filtering and cooling equipment, a chimney and a bottom ash cooler arranged at the lower end of the garbage incinerator, wherein the cyclone separator, the smoke dust remover, the filtering and cooling equipment and the chimney are sequentially arranged on the other side of the garbage incinerator; the blast layer, the lower fluidization layer and the crushing fluidization layer are arranged in the garbage incinerator, primary air is introduced into the blast layer to blow comburent entering the garbage incinerator, so that the comburent is subjected to fluidization combustion in the lower fluidization layer, and secondary air drives the comburent to enter the crushing fluidization layer to be crushed and dispersed. The crushing assembly is used for crushing, dispersing and mixing comburent, the uniformity and stability of the waste incineration fluidization state are maintained, it is guaranteed that the comburent is fully combusted, and the combustion efficiency is improved.

The invention belongs to the technical field of engine air inlet pre-filtering, discloses an automatic ash discharging device and an ash discharging method for a cyclone pipe pre-filter, and aims to overcome the defects of inconvenience in maintenance, high energy consumption, insufficient sealing reliability and the like caused by the fact that the cyclone pipe pre-filter depends on manual ash discharging or a complex active pumping and discharging system in the prior art. The transparent material dust collection shell is matched with the slope side wall with the high outer portion and the low inner portion, so that the dust deposition state is visualized, and dust automatically flows and gathers; a hinged cover plate is arranged at a bottom ash discharge port and is driven to be opened and closed by an electric actuator, wired / wireless dual-mode triggering is supported, and two ash discharge ending conditions of timing automatic closing and manual confirmation closing are matched. The air pre-filter has a good ash discharging effect, it is guaranteed that the cyclone pipe always runs under the designed working condition, the rough filtration efficiency of the air pre-filter reaches 95%, the overall performance of a filtration system is remarkably improved, high reliability and operation convenience are achieved, and the air pre-filter meets the air inlet pre-filtration requirements of engineering machinery, agricultural machinery and other scenes.

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

A method for processing fly ash to reduce a carbon content thereof is disclosed. The disclosed method may include drying a batch of wet fly ash and separating it into first and second streams of dried fly ash, with the second stream then undergoing classification to remove oversized particles and bottom ash therefrom and thermal treatment to offload carbon therefrom. The method also may include mixing (A) the first stream of dried fly ash and (B) the classified and thermally treated second stream of dried fly ash to produce (C) a processed fly ash mixture having a carbon content in the range of about 3.0–6.0 wt%. In some cases, additive(s) optionally may be added to the processed fly ash mixture, for example, to further adjust its loss on ignition (LOI) to a targeted range. Also disclosed are several systems embodying such methodology.

This utility model belongs to the technical field of baghouse dust collectors, and in particular, a pulse jet baghouse dust collector. It includes a base plate with four mounting slots. The dust collector also includes: a support frame fixedly mounted on the top of the base plate, on which a pulse jet dust collector is fixedly mounted, with a bottom ash pipe fixedly connected to the bottom of the pulse jet dust collector; a ash guide pipe, the top of which is rotatably connected to the bottom of the bottom ash pipe; and a fixing rod, the bottom of which is fixedly mounted on the top of the base plate, with a disc fixedly mounted on the top of the fixing rod. The disc has four through holes spaced evenly in a ring, and the bottom of the ash guide pipe slides in contact with the top of the disc. This utility model collects and stores dust by setting up multiple collection boxes, and allows for disassembly and cleaning of the collection boxes even when the machine is stopped, greatly improving the working efficiency of the pulse jet dust collector. It is also convenient to operate, saves time and effort, and is highly practical.

This utility model discloses an anti-clogging structure for a pulse dust collector. The pulse dust collector has a clean air duct and fan connected to its left side for discharging filtered clean air, and a pulse air manifold installed on its right side for cleaning the dust collection bag. Its bottom features an anti-clogging discharge trough, including a dust collection trough, a dust inlet pipe, and an anti-clogging mechanism. In the anti-clogging mechanism, a straight pipe is connected to the bottom ash discharge port of the dust collection trough, and an inclined ash discharge pipe is fixed to the bottom side wall of the straight pipe with their inner cavities communicating. A lower end cover is fixed to the bottom of the straight pipe, and a servo motor is connected to a drive shaft via a coupling. The bottom section of the outer ring of the drive shaft has spiral blades that forcefully transport clogging dust downwards; the top section of the outer ring is connected to a scraper via a support rod. The scraper is close to the inner wall of the dust collection trough and can scrape off clumps of adhering dust. This utility model's anti-clogging structure effectively solves the problem of ash discharge clogging in pulse dust collectors, ensuring stable equipment operation and improving dust removal efficiency.

The invention relates to the field of fuel and boiler systems, in particular to a coal gangue valuable element self-heating extraction system which comprises a feeding module, a crushing module, a decarburization activation module and a valuable element extraction module which are sequentially linked to form a closed loop. The feeding module adopts a belt type and spiral feeding combination; the crushing module is used for crushing the coal gangue until the particle size is below 2cm by using a jaw crusher; the temperature of the decarburization activation furnace is controlled at 750-850 DEG C, coal gangue decarburization, ash activation and rare earth calcination are achieved, flue gas is subjected to heat exchange to produce 300-450 DEG C high-temperature steam for energy supply, and bottom slag is ground to 200 meshes or below for standby application. The valuable element extraction comprises a magnetic separation iron removal sub-module, a hydrochloric acid leaching sub-module and the like, and the system adopts gradient energy utilization (high-temperature steam, medium-temperature steam and low-temperature steam are respectively used for acid leaching, aluminum chloride hexahydrate crystallization, extraction and white carbon black preparation). The system realizes the utilization of all components such as carbon and aluminum in the coal gangue, produces high-value products such as metal gallium and rare earth oxides, realizes self-heating to reduce energy consumption, is matched with an environment-friendly treatment unit, is adaptive to different coal gangue components, and is good in energy efficiency and economical efficiency.

The invention discloses a modified emulsified asphalt mixture and an ultrathin wearing layer preparation method, and belongs to the field of road engineering, the modified emulsified asphalt mixture is prepared from the following components by weight: 10-16 parts of emulsified asphalt, 6-9 parts of epoxy resin, 3-9 parts of a flexibilizer, 0.1-0.5 part of a coupling agent, 90-110 parts of aggregate, and 10-15 parts of a composite filler; the composite filler is one or a mixture of furnace bottom ash, fly ash and polyamide fiber, and through physical crosslinking of the flexibilizer and chemical curing of the epoxy resin, the toughness and bonding performance of the emulsified asphalt are remarkably enhanced; meanwhile, the basalt aggregate is pretreated by adopting the silane coupling agent, so that the surface characteristics of the aggregate are optimized, the interface bonding force between the aggregate and the modified asphalt is greatly improved, and the problem of insufficient performance of a traditional material under traffic load is fundamentally solved.

The utility model relates to the field of boiler bottom ash treatment, in particular to a scraper slag conveyor with good stability, which comprises a triangular sprocket group, the tooth crest of the sprocket group is meshed with a conveying group for conveying slag, and the outer surface of the sprocket group is bolted with a chain scraping group for scraping the outer surface of the conveying group. The material scraping end of the chain material scraping set makes contact with the outer side of the conveying set, the outer side of the chain tooth set is connected with a back material scraping set for scraping materials on the inner surface of the conveying set, and the back material scraping set makes contact with the inner side of the conveying set. According to the invention, the scraper slag salvaging machine is in an inverted triangle state in a slag natural conveying state, and has a high meshing transmission effect in a severe and severe use environment.

This disclosure relates to the field of power generation technology, and in particular to a cooling device and method for a sorting chamber, to solve the problems of poor stability, frequent failures, and low recovery efficiency in existing circulating fluidized bed boilers. The chamber is inclined and has an inlet ash inlet, a first ash discharge outlet, and a second ash discharge outlet. An ash inlet unit is fixedly installed on the chamber and positioned at the ash inlet; the ash inlet unit is used to regulate the amount of ash entering the sorting chamber. The sorting unit is inclined and communicates with the ash inlet unit, discharging the sorted bottom ash through the first ash discharge outlet. The cooling unit includes multiple cooling chambers and multiple baffles, with each baffle forming one cooling chamber. Each baffle contains a cooling medium for cooling, and the bottom ash in the cooling chamber is discharged through the second ash discharge outlet. The sorting chamber cooling device and method provided in this disclosure are used to improve the stability of circulating fluidized bed boilers and reduce their failure rates.

The utility model discloses a deslagging system for bottom slag of a zinc smelting electric furnace, and relates to the technical field of electric furnace deslagging. The slag pushing device comprises a slag pushing component and a driving component, the slag pushing component comprises a slag pushing rake and an adapter, a pushing plate is fixedly mounted on one side plate surface of the slag pushing rake, an elastic tensioning rib is rotatably mounted at one end, away from the slag pushing rake, of the pushing plate, and the upper side plate surface of one end, close to the elastic tensioning rib, of the pushing plate is hinged to the adapter; the end, away from the pushing plate, of the elastic tensioning rib is rotationally connected with an adapter, and the adapter is installed on the driving component in a sliding mode. According to the utility model, the switching seat is arranged on the driving part, and the driving part controls the switching seat to move, so that manual pushing and pulling of the slag rake are omitted; one end of the pushing plate is connected with the adapter through the elastic tensioning rib, when the slag pushing rake cannot move downwards, the adapter moves downwards to enable the elastic tensioning rib to continuously tension and store force, the slag pushing rake cannot deflect when pushed out, and damage to the slag pushing rake caused by collision with the interior of the electric furnace is prevented.

The invention belongs to the technical field of road engineering materials, and particularly relates to a waste incineration bottom ash temperature-adjusting asphalt mixture and a preparation method and application thereof.The waste incineration bottom ash temperature-adjusting asphalt mixture comprises mineral aggregate and asphalt, the mineral aggregate comprises waste incineration bottom ash, the mineral aggregate accounts for 94-96% of the weight of the raw materials, and the asphalt accounts for 2-3% of the weight of the raw materials. The asphalt accounts for 4-6% of the raw materials in parts by weight; the mineral aggregate is composed of aggregate, mineral powder filler and phase change microcapsules, and the waste incineration bottom ash comprises waste incineration bottom ash aggregate and waste incineration bottom ash powder; the aggregate and the mineral powder filler contain waste incineration bottom ash. According to the invention, the waste incineration bottom ash is adopted to replace mineral powder and fine aggregate in the mixture, so that the problems of difficulty in bottom ash treatment and shortage of natural aggregate can be solved, resource utilization of the household waste incineration bottom ash is realized, and the value of sustainable development is met; meanwhile, the porous structure of the bottom ash aggregate can also improve the water permeability of the asphalt road and provide certain sound absorption and noise reduction capabilities.

The invention relates to a radioactive combustible solid waste treatment device and method. The device comprises a gasification furnace, an air mixing system, a flue gas recirculation system, a steam mixing system, a combustion furnace and a stored ash ashing device. Materials are subjected to various reactions in the gasification furnace to form gas products, liquid tar and solid residues (bottom ash), the gas products enter the combustion furnace to be fully combusted, in the process, flue gas mixed with water vapor is introduced into the gasification furnace from the position below a fire grate of the gasification furnace, a material layer and a pyrolysis gas layer through a flue gas recirculation system, and the gas products are fully combusted. The water vapor source comprises two parts, namely water vapor generated by combustion of pyrolysis gas in the combustion furnace and water vapor supplied from the outside. After the water vapor enters the cracking gasifier, the water vapor and coke are subjected to water gas reaction on a coke burning layer, so that the waste treatment effect is further improved; the cracking layer participates in the material cracking process, so that the cracking rate is increased, further cracking of macromolecular products is promoted, and generation of heavy tar is reduced.

The utility model discloses a dust removal device of a mining unloading station, which relates to the technical field of mining equipment and comprises an unloading station body and a dust removal box, one side of the unloading station body is provided with the dust removal box, the top end of the dust removal box is fixedly provided with a fan box, one side of the dust removal box is connected with a dust-gas pipeline in a circulating manner, and the dust-gas pipeline is provided with a fan. And an air volume adjusting valve is fixedly mounted in the middle of the dust-gas pipeline. The fan box of the dust removal device of the mining unloading station extracts dust-containing gas generated by the unloading station body through the dust-gas pipeline and the dust hood, the air volume adjusting valve on the dust-gas pipeline can adjust the air volume, the dust-containing gas enters the dust removal box to be treated, dust is discharged from the bottom dust discharge port, and purified gas is discharged from the purified gas outlet. The water pump above the water tank conveys water to the water supply pipe annularly distributed on the outer side of the dust suction hood through the connecting water pipe and the water supply pipe, then the water is sprayed out through the multiple mist spray heads on the inner side to spray and reduce dust in the dust suction hood, the fixing frame is used for stabilizing the water supply pipe, efficient dust removal is achieved, and the unloading station environment is improved.

The utility model discloses a device for modularly treating waste gas containing metal dust, relates to the technical field of waste gas treatment, and aims to solve the technical problem that the current device for modularly treating waste gas containing metal dust is inconvenient to discharge ash without shutdown. Through the design of the collection box, the interior of the collection box is divided into three groups of cavities through two groups of separation plates, then circular pipes of ash hoppers at the bottoms of the baffling settling chamber, the electrostatic dust collection chamber and the filter bag dust collection chamber are connected with the corresponding cavities, and a blocking structure is arranged in each circular pipe, so that when ash needs to be discharged, the blocking structures can be controlled to seal the circular pipes, and the dust is discharged conveniently. At the moment, metal dust and other particles filtered by the baffling settling chamber, the electrostatic dust collection chamber and the filter bag dust collection chamber are directly stored in the dust hopper, then personnel can directly discharge dust in a cavity of the collection box, and in the process, the device works normally, so that the effect of discharging dust without shutdown can be achieved.

The utility model discloses a combustion device of a biomass gasification furnace, which belongs to the technical field of biomass gasification furnaces and comprises a furnace body, an ash discharge cylinder is arranged on the side of the bottom end of the furnace body, an arc-bottom ash deposition groove is arranged at the bottom of an inner cavity of the furnace body, and an ash falling pipe is fixedly sleeved at the bottom of one end of the ash discharge cylinder. According to the waste residue ash collecting device, waste residue ash is filtered through the supporting pore plate, falling waste residue ash is received through the arc-bottom ash deposition groove, the first motor is used for driving the spiral conveying rod to rotate so that the waste residue ash in the arc-bottom ash deposition groove can be discharged out of the ash discharging barrel and the ash falling pipe, and the waste residue ash is collected through the ash receiving box in the ash deposition box; the function of automatically discharging waste residue ash is achieved, and when the waste residue ash in the ash receiving box needs to be cleaned, the upper portion of the inner cavity of the ash accumulating box is blocked through the drawing sealing plate, so that operation of the furnace body does not need to be stopped when the ash receiving box is drawn out.

The utility model relates to the technical field of hanging furnaces, in particular to a liftable hanging furnace which comprises a hanging furnace body, a simulation flame plate is mounted in the hanging furnace body, a simulation bottom ash plate is mounted in the hanging furnace body, and stable mounting mechanisms are arranged in mounting plates. And lifting height adjusting mechanisms are arranged on the surface of the moving column and in the fixing rod correspondingly, and an automatic humidifying mechanism is arranged in the fixing frame. According to the hanging furnace, the phenomenon that the hanging furnace is loosened or even falls off in the using process is avoided, the overall stability of the hanging furnace is higher, the height position of the hanging furnace body can be adjusted according to the using requirement when the hanging furnace is used, a user can use the hanging furnace more conveniently when the hanging furnace is used, and the using cost is reduced. And when the hanging furnace is used, the surrounding environment can be automatically humidified, the phenomenon that the surrounding environment is dry when the hanging furnace is used for a long time is avoided, and the practicability of the hanging furnace is greatly improved.

The utility model discloses a waste incineration bottom ash pelletizer which comprises a base and a pelletizing assembly, a driver is installed in the base, a pelletizer shell is installed at the top of the base, a feeding cylinder is installed at the top of the pelletizer shell, and a discharging disc is arranged in the pelletizer shell; and the granulation assembly is arranged in the granulator shell and is used for granulation. Through the synchronous rotation of the driving rod, the rotating rod and the extrusion cylinder, the efficient extrusion and granulation of a waste incineration bottom ash mixture are realized. According to the continuous and stable working mode, the granulation efficiency is greatly improved, the requirement for large-scale treatment of waste incineration bottom ash is met, and uniform distribution and bonding forming of a mixture in a granulation cavity are ensured in the rolling extrusion process of the extrusion cylinder at the top of the granulation disc. By means of the design, manufactured particles are regular in shape and uniform in size, and the quality and stability of products are improved.

This invention discloses a method for producing building material substrates from municipal solid waste incineration waste and its preparation process. The substrate consists of 30-50 wt% fly ash, 20-40 wt% bottom ash, 10-20 wt% silicate cement, 3-10 wt% Fe-N-C@Cu-NPs modifier, and 5-15 wt% water. The fly ash is washed with water and heat-treated at 600-800℃ to remove chlorides and organic matter. The bottom ash is screened and magnetically separated to control particle size and iron content. Fe-N-C@Cu-NPs are prepared by high-temperature pyrolysis and wet chemical methods, catalyzing dioxin decomposition and heavy metal solidification. The preparation process includes pretreatment, mixing, vibration molding (5-10 MPa), and wet curing (20-35℃, 80-95% humidity, 7-21 days). The substrate has a compressive strength of 11.8-14.0 MPa, a dioxin content of less than 0.1 ng-TEQ / kg, a heavy metal curing rate of 96.5-98.5%, and a porosity of 10.5-12%, realizing the resource utilization of solid waste and achieving both environmental and economic benefits.

This application discloses an energy-saving coal processing bottom ash recycling device, relating to the field of coal processing and recycling technology, including a sorting box, a screening component, and a cleaning component; the screening component includes a filter plate, mesh, and motor four; the cleaning component includes a robotic arm one, a push plate one, a dredging component, a robotic arm two, and a push plate two; the dredging component includes a push needle and an electrorheological fluid bladder; motor four, robotic arm one, and robotic arm two are all fixed to the inner wall of the sorting box; mesh is opened on the filter plate, and motor four is fixed to one side of the filter plate; it can realize that the filter plate is rotated by motor four, so that it is in a state of vertical downward mesh during cleaning. Under the action of gravity, the impurities that are cleaned can fall directly from the vertical mesh more smoothly, avoiding secondary blockage caused by accumulation in the inclined or horizontal mesh, thus improving cleaning efficiency; robotic arm two drives push plate two to abut against and slightly shake the tip of push needle, so that the side edge of push needle can scrape the inner wall of the mesh.

The invention discloses a grouting material based on waste incineration bottom ash-gypsum-cement and a preparation method of the grouting material. The grouting material takes waste incineration bottom ash, gypsum and cement as main raw materials; the method comprises the following steps: S1, pretreating the waste incineration bottom ash; s2, weighing the waste incineration bottom ash, the desulfurized gypsum, the cement and other materials according to a design proportion; s3, putting the dry materials into a stirrer, and fully stirring the dry materials to uniformly mix the dry materials; adding water and continuously stirring, so that the desulfurized gypsum and the cement are fully mixed; s4, putting the stirred slurry into a mold, tamping the slurry in an inserting manner to uniformly mix the slurry, and scraping off redundant parts by using a scraper; s5, placing the sample which is not demolded into a curing box for curing, and demolding after the sample is completely condensed; and the demolded sample is placed in the curing box again to be cured to the specified age, and the final grouting material sample is obtained. According to the invention, the garbage treatment pressure is relieved, the cost of the grouting material is reduced, and the slurry compactness of the grouting material and the interface cohesiveness of the grouting material and surrounding rock are also improved.

Non-hydraulically reactive blended particulate compositions for use in making low carbon blended cement or low carbon concrete include a pozzolanic component having a first D90 and a mineral filler component having a second D90 greater than the first D90 dry blended without intergrinding, wherein the composition is free of hydraulic cement. The pozzolanic component can have a D90 less about 45 μm and the mineral filler can have a D90 greater than about 45 μm. The pozzolanic material can be fly ash, bottom ash, metallurgical slag, silica fume, metakaolin, volcanic ash, natural pozzolan, calcined shale, calcined clay, and / or ground glass. The mineral filler component can be aggregate fines, quarry fines, limestone powder, granite fines, stone dust, rock dust, marble dust, mine tailings, pulverized bottom ash, pulverized metallurgical slag, ground recycled concrete, pulverized shale from shale oil extraction, or pulverized sand from tar sand extraction.

Non-hydraulically reactive blended particulate compositions for use in making low carbon blended cement or low carbon concrete include a pozzolanic component having a first D90 and a mineral filler component having a second D90 greater than the first D90 dry blended without intergrinding, wherein the composition is free of hydraulic cement. The pozzolanic component can have a D90 less about 45 μm and the mineral filler can have a D90 greater than about 45 μm. The pozzolanic material can be fly ash, bottom ash, steel slag, silica fume, metakaolin, volcanic ash, natural pozzolan, calcined shale, calcined clay, and / or ground glass. The mineral filler component can be aggregate fines, quarry fines, limestone powder, granite fines, stone dust, rock dust, marble dust, mine tailings, pulverized bottom ash, pulverized metallurgical slag, ground recycled concrete, pulverized shale from shale oil extraction, or pulverized sand from tar sand extraction.

The utility model discloses a boiler bottom ash leaking and conveying machine chain replacing and installing device which comprises a box body, the box body comprises at least one pair of supporting side plates, an arc-shaped guide rail, a vertical section guide rail and a plurality of internal supporting pieces, the supporting side plates are symmetrically arranged, the input end of the arc-shaped guide rail is connected with the output end of an ash leaking and conveying machine in an arc mode, and the vertical section guide rail is connected with the vertical section guide rail. The vertical section guide rails are arranged on the inner sides of the supporting side plates along the vertical edges, the upper ends of the vertical section guide rails are in arc connection with the output ends of the arc-shaped guide rails, and the multiple internal supporting pieces are fixedly connected between the supporting side plates. According to the device for replacing and installing the chain of the furnace bottom ash leaking and conveying machine, the arc-shaped guide rail and the vertical-section guide rail are used, the chain is automatically and smoothly transited to the arc-shaped guide rail and the vertical-section guide rail from the ash leaking and conveying machine to be prevented from being clamped, the chain can be continuously installed, and the rotating chain does not need to be manually lifted into a receiving groove section by section through a crowbar in the process; the safety risk in the manual intervention process is avoided, and meanwhile the efficiency of replacing and installing the chain is improved.

This invention provides a method for operating a circulating fluidized bed boiler that can effectively utilize bottom ash, thereby improving operational efficiency and reducing costs, and a method for producing fluidized sand. [Solution] This is a method for operating a circulating fluidized bed boiler 10, in which the bottom ash produced by burning wood-derived biomass fuel in another circulating fluidized bed boiler 10 is recovered and used as fluidized sand in the circulating fluidized bed boiler 10.

The utility model provides an ash discharging device at the bottom of a dry quenching boiler, which belongs to the technical field of ash discharging of dry quenching boilers and comprises an electric grid valve, a material distributing pipe, a material distributing device, a connecting pipe, a telescopic hose, a sucking pump truck connecting port and an auxiliary sucking valve. The electric grid valve is positioned between the dry quenching boiler and the secondary dust remover, and is arranged at the bottom of the dry quenching boiler; the material distributing pipe is communicated with the output end of the electric grid valve; the material distributing device is arranged in the material distributing pipe; one end of the connecting pipe is communicated with the material distributing pipe; according to the device, coke powder accumulated in the coke dry quenching boiler is discharged in batches through the electric gridiron valve, and the falling coke powder is ensured to be loose and uniformly distributed through the material distributing device, so that the adhesion among the coke powder is reduced, the resistance encountered by the air extracting pump truck during air extracting is reduced, and the ash discharging efficiency is further improved.

Disclosed are methods and devices for obtaining a synthesis gas from a waste product via a gasification reaction in conjunction with a reforming reaction under thermal energy recirculation. A feed material and a first and / or second oxidizing agent are fed into a gasification reactor. The feed material includes a solid, liquid and / or gaseous waste product. The feed material is gasified by the first and / or second oxidizing agent, with the addition of thermal energy, into a hydrocarbon gas mixture and at least one by-product including bottom ash and / or fly ash. The hydrocarbon gas mixture is fed into a reformer unit and processed into a raw synthesis gas with the first and / or second oxidizing agent. At least part of the thermal energy released by processing the raw synthesis gas is recirculated into the gasification reactor to provide at least part of the thermal energy for gasification of the feed material.