218 results about "Biomass burning" patented technology

The invention discloses a digital twinning method and system for staged combustion of a coal-biomass fluidized bed. The method comprises the following steps: establishing a comprehensive database comprising three-dimensional simulation data and operation data of a coal-biomass fluidized bed boiler; modeling and coupling the gas phase and the particle phase by using a neural network to obtain a coal-biomass combustion model which is used for predicting a temperature field, a pressure field and a velocity field of the coal-biomass fluidized bed boiler; and finally, integrating the coal-biomass combustion model with a boiler PLC system of the coal-biomass fluidized bed to realize data transmission, so as to obtain a coal-biomass combustion digital twinborn model and realize real-time control and dynamic optimization. On-line real-time prediction of the boiler is achieved, and long-term updating of the model and continuous improvement of the intelligent level are achieved through continuous accumulation and dynamic training of operation data.

The invention belongs to but is not limited to the technical field of carbon emission accounting, and particularly relates to a biomass combustion carbon emission accounting method and system based on artificial intelligence, and the method comprises the steps: obtaining the multi-dimensional data of a biomass combustion process through data collection and preprocessing, and extracting key features through the statistical analysis and machine learning technology; and a suitable machine learning model is constructed to predict the carbon emission, and the carbon emission is calculated in real time. Meanwhile, the accounting process is optimized through adaptive learning and a multi-model integration method, and it is ensured that the model can cope with different combustion conditions and complex nonlinear relations. And finally, performing multi-dimensional analysis and verification on an accounting result, continuously optimizing the model through a dynamic feedback mechanism, and providing long-term carbon emission monitoring and trend prediction functions.

The invention discloses a special SNCR efficient denitration system for a biomass boiler and a denitration method of the special SNCR efficient denitration system, and particularly relates to the technical field of special biomass-fired direct-fired industrial boilers, the special SNCR efficient denitration system comprises a biomass combustion furnace and a denitration mechanism, the biomass combustion furnace comprises a feeding channel, a combustion chamber and a denitration chamber, the combustion chamber is arranged on the side edge of the feeding channel, and the denitration chamber is arranged on the side edge of the combustion chamber. A denitration chamber is arranged on the side, away from the feeding channel, of the combustion chamber, a feeding support is arranged on the side, away from the combustion chamber, of the feeding channel, and a denitration mechanism is arranged on the side, away from the feeding support, of the biomass combustion furnace. A denitration system is provided with a CEMS device to provide NOx emission data, the feeding amount is accurately controlled by adjusting spiral feeding frequency conversion according to the NOx emission amount, the denitration efficiency is improved, and meanwhile waste of a denitration agent is prevented.

The invention provides a biomass combustion in-situ measurement method based on spectrum and flame imaging. The biomass combustion in-situ measurement method comprises the following steps that a biomass sample is pretreated and conveyed to a dropper furnace combustion monitoring system through pneumatic conveying; preheating, and monitoring combustion parameters in real time through a temperature control system and a data acquisition system; the synchronous acquisition system is connected with the Fourier transform infrared spectrometer, the ICCD camera and the intermediate infrared camera; spectral information in a flame heat radiation (200 nm to 20 [mu] m) wave band is obtained, and free radical and smoke component images are collected; and finally, comprehensively processing and analyzing the data, and extracting key parameters such as temperature, radiation characteristics, component concentration and the like. According to the invention, multi-parameter in-situ synchronous measurement is realized, combustion surface temperature and radiation characteristics are accurately calculated in combination with an advanced algorithm, and free radical and flue gas component distribution is quantified through an imaging technology. An efficient and reliable technical means is provided for studying a biomass combustion mechanism, optimizing a combustion process and controlling pollution emission, and the biomass combustion device has important scientific research and application values.

The invention discloses a direct blowing type biomass burner, and relates to the technical field of biomass boilers or coal-fired boilers for mixed combustion of biomass. The problems that according to an existing biomass and coal co-combustion burner, biomass is prone to blockage, ignition stability is poor, burnout is low, and NOx emission is unstable are solved. A perturbed air pipe, a stable combustion air pipe and a combustion nozzle are sequentially connected end to end, the tail end of a conveying pipe is coaxially inserted into the perturbed air pipe and the stable combustion air pipe, the tail end of the conveying pipe is connected with a necking pipe, the tail end of the necking pipe extends into the combustion nozzle, and a partition annular plate is arranged in the joint of the perturbed air pipe and the stable combustion air pipe. The tail end of the perturbed air pipe is connected with a perturbed air inlet pipe, a dispersed perturbed air inlet is formed in the pipe section, extending into the perturbed air pipe, of the conveying pipe, a dispersed perturbed air pipe is inserted into the dispersed perturbed air inlet, the stable combustion air pipe is provided with a stable combustion air inlet, and a stable combustion air inlet pipe is inserted into the stable combustion air inlet. The biomass burner can be directly applied to a large coal-fired boiler.

The invention discloses a method for synergistically preparing ceramsite from biomass combustion bottom slag and retired fan blades. The method comprises the following steps: respectively treating the biomass combustion bottom slag and the retired fan blades to obtain respective powder; 50-90 parts of biomass combustion bottom slag powder and 10-50 parts of retired fan blade powder are mixed to obtain a mixed raw material, and then the mixed raw material is granulated into wet raw material balls; performing aging and drying treatment on the wet raw material nodules obtained in the step 2 to obtain dry raw material nodules; 3, calcining the dry raw material balls obtained in the step 3 to obtain calcined ceramsite; according to the invention, the complementarity of the two raw material components is utilized, a foaming agent or a fluxing agent does not need to be additionally added, the produced ceramsite has remarkable performance, and the heavy metal leaching concentration is far lower than the limit value specified by the standard. The purpose of resource utilization of the biomass combustion bottom slag and the retired fan blade is achieved, and the preparation method has the advantages of being high in efficiency and low in energy consumption and has economic benefits and environmental benefits.

The invention discloses a power generation system for fused salt energy storage by using biomass. According to the system, the purity of raw materials is remarkably improved through an intelligent sorting and impurity removing unit of the pretreatment and coupling module, the waste heat driving drying unit effectively recycles system waste heat to reduce energy consumption, the flexible forming unit generates biomass fuel with stable physical characteristics, and the nano-catalysis pretreatment unit optimizes the reaction activity of the fuel on the molecular level. The measures directly improve the integrity of biomass combustion and the heat energy conversion efficiency, so that the fuel of unit mass releases more effective heat in the fused salt combustor. Meanwhile, tar is decomposed from the source through catalytic pretreatment, generation of nitric oxide and sulfur oxide precursors is reduced, the treatment load of a follow-up flue gas purification system is greatly reduced, the whole system reduces dependence on external energy on the basis of ensuring stable power supply through collaborative optimization of fuel pretreatment, stored energy release and clean emission, and the energy-saving and environment-friendly effects are achieved. And a high-adaptability solution is provided for distributed energy supply.

The invention discloses crushing equipment for waste biomass combustion heat supply, and relates to the technical field of waste biomass crushing. The shaking sieve mechanism, the cutting mechanism and the crushing roller mechanism are sequentially assembled on the rack from top to bottom in the waste material moving direction; the sieve shaking mechanism comprises a first support and a first box body fixed with the upper part of the first support; the stepped screening assembly is arranged in the first box body; and the eccentric vibration wheel assembly is arranged on the first box body. Impurity removal and separation, large-size shearing and crushing operation are sequentially conducted on waste, impurities are rapidly screened out, the purity of the waste is improved, and the large-size waste is pretreated, so that waste particles machined by the crushing roller mechanism can better meet the fine and uniform form required by the final purpose; therefore, stable control of subsequent procedures such as conveying, drying and granulation and unification of product quality are facilitated.

The present invention provides a mortar composition for seaweed bed creation that can significantly reduce the carbon dioxide emission intensity per unit of seaweed bed creation blocks. [Solution] A mortar composition for creating seaweed beds comprising a binder, fine aggregate, and an alkaline stimulant, wherein the binder comprises blast furnace slag fine powder, the fine aggregate comprises main ash of biomass combustion ash, and the alkaline stimulant comprises fly ash of biomass combustion ash.

The present application belongs to the technical field of stove, and particularly relates to a domestic biomass stove. The domestic biomass stove comprises a shell body and a combustion chamber in the shell body. The combustion chamber comprises a cylinder body, and the upper part of the cylinder body is provided with a smoke outlet. The cylinder body is provided with a slit-type burner. The top of the slit-type burner is closed, the bottom is open, and a plurality of through holes are arranged on the outer wall of the slit-type burner. A plurality of baffles are arranged in the slit-type burner along the height direction. One side of the cylinder body is provided with an upper smoke box and a lower smoke box. The upper smoke box and the lower smoke box are connected through a convection tube bundle arranged between the two. The upper smoke box is connected with the smoke outlet, and the lower smoke box is provided with an air outlet. The shell body, the convection tube bundle, the upper smoke box and the lower smoke box form a heating water cavity, the cylinder body and the shell body form a cooling water cavity, and the cooling water cavity and the heating water cavity are connected. The present application effectively inhibits slagging and coking in the biomass combustion process, so that farmers can use cheap fuel for winter heating.

The invention provides a fluidized bed combustion system and a combustion method. The fluidized bed combustion system comprises a fluidized bed combustion reaction device and a mild gasification reaction device, the fluidized bed combustion reaction device comprises a dilute-phase region arranged in the middle and a dense-phase region arranged at the lower part; a gas phase outlet of the mild gasification reaction device is connected with a gas phase inlet of the dilute phase zone, and a solid phase outlet of the mild gasification reaction device is connected with a solid phase inlet of the dense phase zone. The system is stable in combustion, high in denitration efficiency, compact in structure, easy and convenient to operate, low in operation cost and suitable for low-nitrogen transformation and new projects of coal and biomass combustion devices, and has good industrial application prospects and popularization value.

The invention discloses an environmentally friendly biomass combustion furnace, which is mainly composed of: a furnace body (1) and a feeding mechanism (2), wherein the discharge end of the feeding mechanism (2) is arranged inside the furnace body (1), and the feeding end of the feeding mechanism (2) is arranged outside the furnace body (1), and the furnace wall of the furnace body (1) is provided with a heat collecting port, and the heat collecting port is connected to a drying chamber (3) through a connector (31); the environmentally friendly biomass combustion furnace of the invention has a simple structure and is easy to operate. The feeding mechanism is used to automatically load the materials, and the feeding hopper with a weighing device can accurately control the amount of raw materials entering, thereby avoiding unnecessary waste. The "S"-shaped heat collecting channel prevents the combustion chamber and the feeding port and the connector on the heat collecting port from being directly baked by the internal flame, thereby increasing the service life of the connector and reducing the production cost.

The invention provides a method for roasting-leaching clay type lithium ore by replacing a roasting aid with biomass, and belongs to the technical field of ore dressing processes. According to the method, the plant ash generated after biomass combustion is used for replacing part of alkali-containing salt or alkali in the clay type lithium ore so as to achieve the purpose of alkali roasting-water leaching, the sintering condition of a roasting auxiliary and the clay type ore can be effectively reduced through addition of the plant ash, and bulk consumption of solid waste of the plant ash is achieved. The invention provides a mixed roasting-water leaching method of plant ash generated after biomass combustion and clay type lithium ore, so that the consumption of a roasting auxiliary agent is greatly reduced (the consumption of an alkaline agent is reduced by 50-80%), the phenomenon that the roasting auxiliary agent and the clay type ore are easy to sinter at high temperature is improved, clean and effective utilization of biomass is realized, and the method is suitable for industrial production. The lithium obtained through the method is high in leaching rate and low in cost.

The utility model discloses a novel biomass combustion furnace deashing device, which relates to the technical field of combustion furnaces, and comprises a furnace body, a support frame is fixed on the inner wall of the furnace body, two groups of fire grates are mounted at the top of the support frame, the fire grates are semicircular, a mounting component for mounting the fire grates is arranged at the top of the support frame, and the mounting component is fixed on the inner wall of the furnace body. The utility model has the beneficial effects that when the cam rotates to a high position, the two groups of fire grates are driven to vibrate up and down, the fire grates are vibrated to clean ash through the repeated rotation of the cam, the fire grate structure is a trapezoidal structure gap with a small upper part and a large lower part, the effect of only falling ash without falling materials is achieved under the vibration effect, the air inlet of a hearth is facilitated, and the energy consumption is reduced. A good ash removal effect is achieved under the conditions that the cam keeps a reasonable stroke and an existing combustion layer is not damaged, the two fire grates are combined into a circle, the fire grates are of a two-piece structure, and the fire grates can be conveniently taken out from an access hole.

The utility model discloses a novel biomass combustion furnace chimney device, which relates to the technical field of combustion furnaces, and comprises a furnace body, the top of the furnace body is provided with a radiator for carrying out heat exchange on combustion flue gas, one side of the radiator is communicated with an air outlet pipe, the top of the air outlet pipe is provided with a chimney body, and the chimney body is communicated with the radiator. The chimney has the advantages that the inclined pipe is beneficial to stabilizing the airflow in the chimney, if a straight-barrel-shaped chimney is adopted, the situation that the pulling force of the chimney is not enough can be generated in the high-speed working process of a fan, the airflow in the chimney needs to be supplemented through the inclined pipe, and therefore the chimney is not prone to being damaged. Otherwise, the overall length of the chimney needs to be increased, the cost is increased, the air outlet space of the connecting pipe is blocked through movement of the baffle, and therefore the effect of adjusting the air quantity entering the chimney body is achieved, and the air speed is adjusted according to the feeding and combustion conditions in the hearth.

Aspects of the present invention provide biomass combustion stove with an exhaust gas mixer. The exhaust gas mixer is positioned in the exhaust gas outlet of the stove. That is the exhaust gas mixer is positioned within the path of exhaust gases exiting the stove housing at the point where the exhaust gases exit the housing, above a baffle of the stove. The exhaust gas mixer may be a cone, a pair of opposing cones, a sphere, turbine, propeller, partial helical, or fan configured to promote mixing and / or turbulence of the exhaust gases as they exit the housing. In one embodiment, the stove provides some room air to the exhaust gas outlet and flue above the baffle to cool the exhaust gases as they exit the housing via the exhaust gas outlet of the stove.

The application discloses a system and method for blending biomass and ammonia gas in a pulverized coal furnace, and belongs to the technical field of fuel combustion. The boiler combustion area is divided into a stable combustion zone, a main combustion zone, a reduction zone I, a burnout zone I, a reduction zone II and a burnout zone II. The stable combustion zone is provided with a biomass burner and a pulverized coal burner, the main combustion zone is provided with a biomass burner, a pulverized coal burner and an ammonia gas burner, the reduction zone I and the reduction zone II are arranged with ammonia gas burners, and the burnout zone I and the burnout zone II are arranged with burnout air ports, which is conducive to the stable blending combustion of pulverized coal, biomass and ammonia gas and reduces the emission of nitrogen oxides. The application improves the combustion stability and relieves the problems of ash deposition, slagging and corrosion through biomass pretreatment such as secondary crushing, water washing and drying. The application uses the heat of high-temperature flue gas for liquid ammonia gasification and biomass drying, thereby improving the energy utilization rate.

The utility model discloses a system for preparing renewable natural gas by utilizing biomass, which comprises a biomass degradation system, a biomass combustion system, a biomass gasification system and a wind and light energy storage electrolysis system, the biomass degradation system comprises an anaerobic fermentation device, a purification device and a biogas storage tank I which are communicated in sequence, the biomass combustion system comprises a biomass boiler, a carbon dioxide trapping device, a methanation device I and a synthetic natural gas storage tank which are sequentially communicated, and the biomass gasification system comprises a gasification furnace, a methanation device II and a biogas storage tank II which are sequentially communicated. The wind and light energy storage electrolysis system comprises a wind power and photovoltaic power generation system and an electrolytic cell which are sequentially communicated. The biomass recycling system has the advantages that recycling treatment of different types of biomass is realized, and meanwhile, efficient development and utilization of biomass energy are also realized.

The utility model discloses a curing barn capable of improving curing uniformity and curing quality of flue-cured tobacco, which is characterized in that a biomass burner is arranged in a heating chamber, a heat exchange device is arranged on the biomass burner, a smoke exhaust pipe is arranged on the heat exchange device, a hot air inlet and a return air inlet are arranged on a heat insulation wall between a tobacco loading chamber and the heating chamber, and the hot air inlet and the return air inlet are communicated with the heating chamber. An upper-layer tobacco hanging frame, a middle-layer tobacco hanging frame and a lower-layer tobacco hanging frame are arranged in the tobacco containing chamber, a coil pipe smoke inlet pipe is connected to the smoke exhaust pipe, smoke coil pipes are arranged on the upper sides of the upper-layer tobacco hanging frame, the middle-layer tobacco hanging frame and the lower-layer tobacco hanging frame and on the ground below the tobacco hanging frames, the smoke coil pipes are connected with the coil pipe smoke inlet pipe, and a coil pipe smoke exhaust pipe is arranged at the other ends of the smoke coil pipes. Air valves are arranged at the smoke inlet ends of the smoke exhaust pipe and the smoke coil pipes, the smoke coil pipes are located on the left side and the right side of the smoke hanging frame, and an inlet and outlet channel for up-and-down tobacco leaves is arranged between the smoke coil pipes on the left side and the right side; the flue-cured tobacco curing device is suitable for an airflow rising type curing barn and an airflow falling type curing barn, and flue-cured tobaccos on the upper layer, the middle layer and the lower layer can be uniformly cured.

This invention discloses a biomass combustion boiler for purifying waste gas, relating to the field of environmentally friendly combustion furnaces. It solves the problem of incomplete biomass combustion leading to excessive black smoke in the waste gas, affecting purification efficiency. The biomass combustion boiler for purifying waste gas includes a metal support frame, a waste gas purification tower, and a waste gas guide pipe. The purification boiler structure is installed at the top of the metal support frame. The purification boiler structure includes a combustion-supporting telescopic rod, a cover-opening telescopic rod, an inner cylinder, and an outer cylinder. The output end of the cover-opening telescopic rod is connected to a combustion chamber top cover, which pushes the combustion chamber top cover to flip, opening and closing the outer cylinder. The output end of the combustion-supporting telescopic rod is connected to a metal support plate, which pushes the metal support plate up and down to shake the inner cylinder. This invention designs a double boiler (inner and outer cylinders) that can reduce boiler temperature. Biomass fuel is placed in the inner cylinder for combustion, and is cooled by incoming air, extending the boiler's combustion time, resulting in more complete combustion and introducing more air.

A low-nitrogen biomass burner is disclosed in the present invention, which relates to the technical field of burners; specifically, it includes a base, on the top of the base, a combustion tank, a slag discharge box and a frame are successively installed. A screw feeder is installed on the top of the frame, and a cloth pipe is installed between the outlet of the screw feeder and the combustion tank. A movable flap is hinged to the bottom end of the cloth pipe. A blower is installed inside the frame, igniters are installed on both sides inside the combustion tank, and an air box mechanism is installed on the top of the slag discharge box. In the present invention, by using the internal blowing air flow and the injection power of the cloth pipe, the biomass particles inside the burner move violently, fully contact with oxygen during combustion, improve the combustion efficiency, and the combustible gas formed by the combustion of the biomass particles and the incoming air rise in a spiral shape, further improving the combustion efficiency and reducing the formation of combustion waste gas.

The invention relates to the technical field of biomass combustion, and discloses a biomass quantitative feeding rotary stock bin which comprises an outer fixed bin cylinder and an inner fixed bin cylinder, the inner fixed bin cylinder is located in the outer fixed bin cylinder, and a discharging opening is formed in the bottom face of the outer fixed bin cylinder. A first material guide scraper and a second material guide scraper are arranged in the outer fixed silo, the first material guide scraper is fixed in the outer fixed silo, the second material guide scraper is movably arranged in the outer fixed silo, a feeding port is formed in the top of the inner fixed silo, and a notch is formed in the peripheral surface of the inner fixed silo. By means of the inner and outer double-cavity structure and the double functions of rotation of the material uniformizing base plate and the outer fixed material guiding scraper, biomass materials are effectively prevented from bridging and arching in the stock bin, meanwhile, the double-speed rotating base plate is matched with frequency conversion speed regulation, the inner cavity discharging speed and the outer cavity discharging amount are accurately controlled, continuous and stable feeding is achieved, and the working efficiency is improved. And efficiency reduction of downstream equipment caused by material supply fluctuation is avoided.

The utility model provides a biomass bar forming machine, and belongs to the field of biomass solid fuel preparation. The biomass bar forming machine comprises a hydraulic cylinder, the hydraulic cylinder is connected with a piston through a push rod, a bar output pipe is arranged on the outer wall of the piston, a heat conduction oil cylinder is fixed to the outer wall of the bar output pipe in a surrounding mode, a stock bin is welded to one end of the surface of the bar output pipe, and a forming cavity exhaust seam and a forming cavity mold are formed in the other end of the surface of the bar output pipe. The interior of the bar output pipe communicates with the interior of the stock bin, and a biomass combustion furnace is installed below the heat conduction oil cylinder. By means of the design of the bar output pipe, the heat conduction oil cylinder, the forming cavity mold and the biomass combustion furnace, uniform heating of biomass raw materials is achieved. Through the design, the problem of non-uniform heating of traditional coil heating is avoided; and meanwhile, the compression ratio can be flexibly adjusted according to the characteristics and production requirements of different biomass raw materials, so that biomass bars with different heat values and shapes are produced.

The present invention discloses a high-efficiency, energy-saving and environmentally friendly vertical biomass combustion furnace and a fruit and vegetable dryer based on the combustion furnace as a heat source. The vertical biomass particle combustion furnace includes a storage box, a motor, a feeding device, a combustion chamber, a No. 1 combustion furnace, a No. 2 combustion furnace, a radiator, a power transmission system and a connecting device, an automatic ignition device, an automatic control system, and an oxygen supply device. The burner is designed to be a primary and a secondary combustion chamber, which is a stepped design. The combustion chamber is provided with a slag crushing and separation device, an ash and slag discharge device, and other auxiliary devices such as a slag collector. The effect of the present invention is: to achieve full combustion of the fuel, greatly improve the combustion utilization rate of biomass combustibles, save fuel and reduce waste, and timely remove the residues generated during the combustion process, thereby ensuring the stability and continuity of fuel combustion and ensuring the normal working state of the dryer.

The invention provides a coal and biomass staged pyrolysis method and system for biomass external combustion heat supply. According to the method, a staged pyrolysis mode is adopted, biomass is combusted to generate first heat, heat is supplied to a low-temperature pyrolysis furnace, and biomass and coal are pyrolyzed to generate semi-coke and low-temperature pyrolysis gas; the low-temperature pyrolysis gas is rich in carbon dioxide released by low-temperature pyrolysis; then, the semi-coke enters a high-temperature pyrolyzing furnace, the biomass is combusted to generate second heat to supply heat to the high-temperature pyrolyzing furnace, and the semi-coke is pyrolyzed to generate coke and high-temperature pyrolyzing gas; the second heat is greater than the first heat. The pyrolysis process of biomass and coal is divided into a low-temperature stage and a high-temperature stage, carbon dioxide is released in the low-temperature stage, carbon monoxide and hydrogen are released in the high-temperature stage, enrichment of carbon dioxide at the low pyrolysis temperature and enrichment of hydrogen at the high pyrolysis temperature are achieved, the energy consumption of carbon dioxide separation is reduced, and the production cost is reduced. And directional separation of hydrocarbon components is realized.

In the patent application document I have described a coordination mechanism of two pistons within a cylinder that allows a thermodynamic process such as expansion to be carried out. The pistons are moved by separate mechanisms that transform the continuous rotation of motor or generator shafts into irregular rectilinear motion. The objective of this invention is its use in power production facilities where efficient compression or expansion of gas or vapors is required. The applications can be: Expansion of steam produced in a biomass boiler. Expansion of steam produced with some energy source, primarily renewable. Compression and expansion of air in an external biomass combustion plant and compressed air-exhaust gas heat exchanger. Vapor-gas expansion produced by the combustion of ethanol and oxygen.

The utility model relates to a biomass fuel conveying device and a biomass combustion system with the same, and belongs to the technical field of biomass fuel conveying devices, the biomass fuel conveying device comprises a walking frame, a plurality of conveying rollers, a conveying belt, a conveying motor and a heating pipe, and the conveying rollers rotate on the walking frame at intervals; the conveying belt rolls outside the plurality of conveying rollers; the conveying motor is fixed to the walking frame and is in transmission connection with any conveying roller. The heating pipe is in an S shape, located on one side of the conveying rollers and fixed to the walking frame. And the conveyor belt corresponding to the upper parts of the plurality of conveying rollers is in sliding contact with the heating pipe. According to the biomass fuel drying device, the heating pipe is located on one side of the conveying rollers in an S shape and fixed to the walking frame, and the conveying belt corresponding to the upper portions of the conveying rollers is in sliding contact with the heating pipe, so that when the conveying belt conveys biomass fuel, the biomass fuel can be dried, the viscidity of the biomass fuel such as high-sugar crop straw and pomace is reduced, and the biomass fuel drying effect is improved. And the feeding continuity and stability are ensured.

The invention relates to the technical field of biomass combustion boilers, and discloses a biomass combustion system capable of achieving partitioned feeding, which comprises a combustion furnace, the upper end of the combustion furnace is communicated with a feeding chamber, a screening plate is hinged to one side of the upper end in the feeding chamber, and a screening transmission mechanism is arranged in the feeding chamber; two smashing rollers are arranged on the inner side of the lower end of the combustion furnace, a movable shaft is fixedly installed at the axis position of the other smashing roller, a smashing transmission mechanism is further arranged on the outer wall of the combustion furnace, discharging shafts are symmetrically and rotationally installed at the position, communicated with the feeding chamber, of the combustion furnace, discharging plates are installed on the discharging shafts, and a discharging transmission mechanism is arranged on the combustion furnace. A heat exchange mechanism is further arranged in the combustion furnace. Biomass fuels with different granularities are prevented from directly entering the combustion furnace, meanwhile, under the action of the crushing transmission mechanism, the biomass fuels with the different granularities are subjected to partitioned extrusion type crushing and feeding, and the combustion efficiency of the biomass fuels is greatly improved.

The utility model discloses a self-spinning biomass fluidized bed pyrolysis gasification device which comprises a gasification furnace used for carrying out combustion operation, one side of the gasification furnace is connected with a feeding mechanism, and biomass comburent is fed into the gasification furnace through the feeding mechanism to be combusted. The other side of the gasification furnace is connected with a discharging mechanism, charcoal ash generated after combustion in the gasification furnace is discharged through the discharging mechanism, the top end of the gasification furnace is connected with a dust removal mechanism, impurities in pyrolysis gas generated by the gasification furnace are removed through the dust removal mechanism, and the bottom end of the dust removal mechanism is connected with the discharging mechanism; a combustion area, an expanding area and a reaction area which are communicated in sequence are arranged in the gasification furnace from bottom to top; the two sides of the combustion area are connected with the feeding mechanism and the discharging mechanism respectively, and one side of the reaction area is connected with the dust removal mechanism. Flow control assemblies are arranged in the diameter expanding area and the reaction area and used for enabling pyrolysis gas generated in the combustion area to achieve spiral slow flow so as to improve the gas production rate and the gas production quality of biomass.

Biomass combustion processes may be controlled to intentionally generate a carbon-containing ash, from which activated carbon is produced according to the methods disclosed. Some variations provide an economically attractive process for producing an activated carbon product, the process comprising combusting a carbon-containing feedstock to generate energy, combustion products, and ash, wherein the ash contains at least 10 wt % carbon; separating and recovering carbon contained in said ash; and further activating or treating the separated carbon, to generate an activated carbon product. Many process variations are disclosed, and uses for the activated carbon product are disclosed.