162 results about "Biomass burning" patented technology

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 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.

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.

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.

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.

This invention discloses a bamboo-based plant dust fuel, its preparation method, and its application. The fuel is made from bamboo processing residues such as bamboo shavings and bamboo powder through crushing, drying, and sieving. Its particle size distribution is between 60 and 325 mesh, with a moisture content of less than 12 wt%, ash content of less than 5 wt%, and volatile matter content of more than 70 wt%. By precisely controlling key physical properties, this invention effectively solves the problems of low combustion efficiency, easy slagging, and high pollution associated with existing bamboo fuels. This fuel has the advantages of easy ignition, complete combustion, high calorific value, and low ash residue. Its preparation process is simple and low-cost, providing an effective way to utilize bamboo processing residues for high-value applications. It can be widely used as a solid fuel in various biomass combustion equipment.

The utility model discloses an airing device for biomass burning particle production, which relates to the technical field of biomass burning particles and comprises a base, a material frame is arranged at the upper end of the base, a C-shaped frame is arranged on the front side of the material frame, a drying frame is arranged on the front side of the C-shaped frame, and a transmission belt is arranged in the base. A first motor is arranged on the right side of the material frame, a baffle is arranged on the left side of the first motor, a second motor is arranged at the upper end of the drying frame, two sets of heating pipes are arranged in the drying frame, and a fan is arranged at the lower end of the second motor. According to the airing device for biomass combustion particle production, through the arrangement of the baffle, the first motor and other structures, the first motor drives the baffle to rotate, so that the baffle rotates, the discharging area of the discharging port of the material frame is changed, the discharging amount of biomass combustion particle raw materials each time can be controlled, and the situation that too much materials are discharged each time, and the drying effect is affected is avoided. The raw materials are stacked to influence the airing effect.

A biomass burner includes a lateral shell having an axis of main development and a bottom provided in a lower end of the lateral shell to delimit the lateral shell at the lower part in order to internally define a compartment to contain the biomass. The bottom is able to support the biomass inside the containing compartment and is provided with one or more first holes configured for the introduction of primary air into the containing compartment.

To provide a biomass combustion system capable of preventing entry of a metallic material into combustion means.SOLUTION: A biomass combustion system includes: fuel accommodation means for storing biomass fuel; combustion means for burning the biomass fuel; and fuel supply means for supplying the biomass fuel in the fuel accommodation means to the combustion means. A magnet 81 is provided in the fuel supply means.SELECTED DRAWING: Figure 3

The embodiment of the invention provides a biomass incineration fire point determination method and device, computer equipment and a medium, and relates to the technical field of atmospheric environment remote sensing monitoring, and the method comprises the steps: obtaining the column concentration of atmospheric trace gas, the profile of the atmospheric trace gas, the land utilization type and biomass incineration related data of a to-be-monitored area; according to the column concentration of the atmospheric trace gas and the atmospheric trace gas profile, calculating the near-surface atmospheric trace gas column concentration; according to the spatial-temporal variability of the near-surface atmosphere trace gas column concentration, determining an abnormally high-value grid in the near-surface atmosphere trace gas column concentration; and verifying the biomass incineration rationality of the abnormal high-value grid through the land utilization and biomass incineration related data, and determining the abnormal high-value grid passing the biomass incineration rationality verification as a biomass incineration fire point. According to the scheme, the accuracy and effectiveness of determining the biomass incineration fire point can be improved.

This invention relates to a biomass combustion device for a pulverized coal boiler and its operating method. The biomass combustion device includes a furnace, a pulverized coal burner group, and a biomass burner group. The pulverized coal burner group is arranged in layers along the height of the furnace, independently located in the lower, middle, and upper layers of the furnace. The biomass burner group is positioned above each layer of the pulverized coal burner group. This invention achieves efficient and stable operation of pulverized coal and biomass co-firing through innovative structural modifications to the biomass burner and optimized design of the entire co-firing system. This invention innovatively designs nine multi-layer combination opening modes for the biomass burners, combined with different arrangement forms, to adapt to different operating conditions such as high boiler loads, flexibly adjusting the flame field and reburning zone characteristics, and balancing stable combustion, burnout rate, and NO₂. x The inhibitory effect is adapted to different environmental protection and efficiency requirements.

The invention discloses a multifunctional biomass gasification furnace, and relates to the technical field of gasification furnaces, the multifunctional biomass gasification furnace comprises a connecting bottom plate, the top of the connecting bottom plate close to the edge of one side is provided with a combustion assembly used for gasifying various biomasses; two cleaning assemblies used for removing tar generated by biomass combustion are arranged at the position, close to the center, of the top of the connecting bottom plate. According to the multifunctional biomass gasification furnace, when the multifunctional biomass gasification furnace is used for combusting biomass fuel to generate combustible gas, quantitative limestone and biomass fuel are conveyed into the combustion chamber, the combustible gas is generated through combustion and conveyed into the cleaning chamber, tar in coal gas makes contact with the surface of a retention plate, and the tar in the coal gas makes contact with the surface of the retention plate; and tar particles are attached to the surface of the tar particles, so that the tar in the coal gas is purified, and the problem that in the prior art, the tar in most gasification furnaces is difficult to effectively remove and is easily attached to a gas conveying pipeline to damage the stable operation of the gasification furnaces is solved.

The utility model belongs to the technical field of biomass treatment, and particularly relates to a deslagging device for a biomass burner, which comprises a burning device, and a partition plate is arranged in the burning device and used for dividing a burning chamber, an ash falling chamber and an air inlet chamber; a plurality of filter holes are uniformly distributed in the first partition plate; a scraping plate is tightly attached to the upper portion of the first partition plate in a sliding mode, an arc-shaped drainage groove is formed in the upper portion of the scraping plate, fixing bases are arranged on the two sides of the scraping plate in an extending mode, a disturbance shaft is rotatably arranged on the two fixing bases, and an annular disturbance piece is arranged on the disturbance shaft; racks are symmetrically arranged on the two sides of the inner wall of the combustion chamber, and gears meshed with the racks are arranged on the two sides of the disturbance shaft correspondingly; the outer side of the combustion device is provided with a telescopic mechanism which is in transmission connection with the scraper. By means of the structure, residues can be cleaned on line, gathered, disturbed again and fully combusted, and finally the residues are scraped out through the scraping plate, so that part of fuel residues which are not completely combusted can be prevented from being brought out, and the combustion efficiency of fuel can be improved.

The invention provides a system for manufacturing porous ceramsite by using waste biomass and clay, which comprises a raw material pretreatment system, a mixing molding system, a firing system and a quality detection system, the raw material pretreatment system comprises a waste biomass crushing device and a clay screening and purifying device, the waste biomass crushing device is used for crushing waste biomass, the clay screening and purifying equipment is used for screening and purifying clay, large-particle impurities and magnetic substances are removed, and pretreated waste biomass particles and clay are obtained. The method reduces environmental pollution caused by waste, reduces dependence on traditional ceramsite manufacturing raw materials, protects natural resources, utilizes waste heat through a preheating kiln and provides part of firing energy through waste biomass combustion, greatly reduces energy consumption in the production process, reduces the production cost, and is suitable for industrial production. The prepared porous ceramsite has good strength and porosity.

The utility model relates to the technical field of slag salvaging machines, in particular to a slag salvaging machine of a biomass combustion furnace, which is characterized in that ash is discharged to a screening mechanism, the screening mechanism is started to convey the ash, the ash is filtered in the conveying process, the ash is respectively collected, and after the ash is discharged, the ash is conveyed to the screening mechanism. A screening device of the screening mechanism is cleaned through the stretching cleaning mechanism, and the practicability of the equipment is improved; comprising a slag salvaging mechanism; the device further comprises an auxiliary mechanism, a cooling mechanism, a collecting mechanism, a screening mechanism and a cleaning mechanism, the auxiliary mechanism is located on the left side of the slag salvaging mechanism, the cooling mechanism is located above the auxiliary mechanism, the auxiliary mechanism is installed on the collecting mechanism, the screening mechanism is located on the left side of the collecting mechanism, and the cleaning mechanism is located above the screening mechanism.

The utility model discloses an anti-reverse-burning electric deslagging biomass burner which comprises a base station, a plurality of evenly-distributed supporting columns are arranged at the bottom end of the base station, a burning box is arranged on one side of the top end of the base station, a conveying cylinder communicated with the burning box is arranged on one side of the burning box, the conveying cylinder is connected with the base station through a supporting block, and the base station is connected with the burning box through the supporting block. A feeding hopper is arranged on one side of the top end of the conveying cylinder. The environment-friendly combustor has the beneficial effects that by arranging the flue gas purification assembly, flue gas generated in the combustion process of the combustor can be filtered and discharged, and the environment friendliness of the combustor is improved; an elastic piece, a rotating shaft and a cam in the flue gas purification assembly can conduct vibration treatment on a dust filter screen, dust is prevented from blocking filter holes of the dust filter screen to affect the filtering efficiency of the dust filter screen, and a filling frame and activated carbon in the flue gas purification assembly can adsorb and purify harmful gas in the flue gas and prevent the harmful gas from flowing to the external environment to pollute the environment.

The invention relates to a nozzle for biomass steam gasification, and belongs to the technical field of biomass combustion equipment. A nozzle for biomass water vapor gasification comprises a static pressure box and a pre-combustion chamber which are communicated up and down to form a whole. A primary air pipeline is arranged in the static pressure box, an anti-backfire valve is arranged at the tail end of the static pressure box, and the tail end of the primary air pipeline penetrates through the anti-backfire valve and stops at the upper end of the pre-combustion chamber; the pre-combustion chamber is in a horn mouth shape with a downward opening, a plurality of water vapor pipelines penetrate through the periphery of the side wall of the pre-combustion chamber from top to bottom, and water vapor nozzles are formed in the lower ends of the water vapor pipelines. Biomass powder and primary air are evenly mixed and then enter the pre-combustion chamber, primary combustion is conducted at the front end of the pre-combustion chamber under the action of an ignition opening, a primary reaction product is evenly mixed with water vapor at the rear section of the pre-combustion chamber under driving of carrier gas, further gasification is conducted, and grading control over gasification reaction is achieved.

The utility model discloses a biomass burning steam boiler which comprises a hearth, an upper boiler barrel and a lower boiler barrel are arranged in the hearth, the upper boiler barrel and the lower boiler barrel are connected through a membrane type water cooling wall, a burner is arranged on the right side of the hearth, an economizer is arranged on a smoke exhaust pipeline on the left side of the hearth, and the bottom of the economizer is connected to a softened water tank. The upper end of the membrane type water cooling wall is connected to the upper boiler barrel through an upper collecting box, the lower end of the membrane type water cooling wall is connected to the lower boiler barrel through a lower collecting box, a pipe bundle is arranged in the membrane type water cooling wall, and a soot blowing pipe is arranged on a smoke pipeline in the hearth. And a controller is arranged on the outer wall of the hearth. According to the utility model, the upper boiler barrel and the lower boiler barrel are adopted, and when biomass fuel is combusted by the combustor, heat generated by combustion is transferred to water in the boiler through the convection bank in the membrane type water cooling wall, so that the steam generation speed is increased, and the utilization rate of the biomass fuel during combustion is further improved.