423 results about "Biomass fuels" patented technology

The invention relates to the technical field of biomass fuel processing, and discloses biomass fuel production and processing equipment, which comprises a granulation box body, a flat die rotationally connected in the granulation box body, a compression roller arranged above the flat die, a rotating assembly mounted at the bottom of the granulation box body and used for driving the flat die to rotate, and a control assembly mounted at the bottom of the granulation box body and used for controlling the compression roller to rotate, the telescopic assembly is mounted on the side wall of the granulating box body and is used for driving the compression roller to move up and down and adjusting the distance between the flat die and the compression roller; and the spacing control system is in communication connection with the control end of the telescopic assembly and is used for accurately controlling the spacing between the flat die and the compression roller. The distance control system obtains raw material characteristics, equipment states and particle quality data in real time, constructs a multi-dimensional evaluation model and dynamically adjusts the distance between the pressing roller and the flat die, the problems that manual adjustment is low in precision and high in machine blockage risk are solved, intelligent and accurate control is achieved, safe operation of equipment is guaranteed, and the particle quality is optimized.

The invention discloses an air preheating biomass boiler, belongs to the technical field of boilers, and aims to solve the problems of low combustion efficiency, insufficient flue gas waste heat utilization and particulate matter emission of a traditional biomass boiler. Function optimization is achieved through a main body structure composed of a furnace body, a charging barrel and a rotating pipe, a double-spiral-disc heat exchange assembly is arranged in the charging barrel, biomass fuel is preheated through boiler exhaust smoke waste heat, meanwhile, smoke is discharged through exhaust holes after being distributed through spiral disc gas storage cavities, and unburned particles are filtered by a biomass layer and carried to a hearth to be subjected to secondary combustion; an air inlet cavity is formed in the rotating pipe, and air is preheated through the fixed pipe and the first connecting pipe and then input into the hearth. The exhaust assembly adopts a sliding rod and sealing block matched structure, and a convex block mechanism driven by a rotating pipe drives the sealing block to periodically move, so that gas in the charging barrel is intermittently exhausted through a double-layer filter screen. According to the boiler, the heat efficiency is improved through a smoke-air two-way preheating and particulate matter secondary combustion mechanism, and the biomass preheating, air heating and emission treatment process is optimized.

The invention discloses a boiler blending combustion biomass fuel coupling chemical looping combustion system, and particularly relates to the technical field of fuel control, the system comprises an operation monitoring module, through deploying a multi-type sensor network at a key position, real-time collecting whole flow operation data, constructing a space-time monitoring data set covering the physical and chemical process of a combustion system, and determining a combustion state of the combustion system; the reliability of data acquisition is guaranteed through signal filtering and abnormal value correction; according to the method, a multi-dimensional cooperative control framework is constructed, the six-dimensional influence coefficients are fused into the comprehensive distribution index, the distribution strategy of the fuel between the main combustion area and the chemical looping reactor is dynamically optimized, traditional single control dimension is expanded to multi-dimensional cooperative control, and the adaptability of the system to complex fuel characteristics is improved.

The invention relates to the technical field of biomass fuel combustors, in particular to a side spraying combustor which comprises a combustor box body, a detachable heat insulation shell is arranged on the right side of the combustor box body, an air supply system is arranged on the left side of the combustor box body, and a feeding part used for discharging is arranged at the top end of the combustor box body. A feeding part for conveying materials is arranged in the combustor box body; the feeding part comprises a stock bin hopper fixed to the top end of the combustor box body, the bottom end of the stock bin hopper is connected with a transition section, and a material passing assembly used for vibration is arranged below the transition section. By means of the vibration design of the material passing assembly, the vibration plate, the supporting spring and the corrugated rubber sleeve at the feeding part, continuous vibration is generated under driving of the electric push rod A, adhesion and caking of biomass fuel are damaged, bridging or arching is prevented from being formed at the position of the stock bin hopper and the transition section, and it is guaranteed that the fuel continuously and stably enters a feeding system.

The application discloses a boiler blending biomass fuel coupling chemical chain combustion system and concretely relates to the fuel control technical field.The boiler blending biomass fuel coupling chemical chain combustion system comprises an operation monitoring module, a plurality of types of sensor networks are arranged at key positions, whole-process operation data are collected in real time, a time-space monitoring data set covering physical and chemical processes of the combustion system is constructed, and the reliability of data collection is ensured through signal filtering and abnormal value correction; through the construction of a multi-dimensional collaborative control architecture, six-dimensional influence coefficients are fused into a comprehensive distribution index, the distribution strategy of fuel between the main combustion zone and the chemical chain reactor is dynamically optimized, the traditional single control dimension is expanded to multi-dimensional collaborative regulation, and the adaptability of the system to complex fuel characteristics is improved.

The invention belongs to the technical field of energy, and particularly relates to a device for recycling waste heat of a power plant to dry biomass fuel and a using method. The device comprises an auxiliary steam header, a pressure matcher, a condenser hot well, a biomass fuel dryer and a flash tank. A gas outlet of the auxiliary steam header and a gas outlet of the condenser hot well are both communicated with a gas inlet of the pressure matcher; an air outlet of the pressure matcher is communicated with a thermal medium inlet of the biomass fuel dryer, a thermal medium outlet of the biomass fuel dryer is communicated with a water inlet of the flash tank, and an air outlet of the flash tank is communicated with an air inlet of the pressure matcher. According to the device, heat of gas generated by the auxiliary steam header and the condenser hot well is recycled to heat and dry wet biomass fuel, the comprehensive utilization rate of energy is increased, and the system operation cost is reduced; and waste heat energy generated by the power plant is utilized in a gradient mode, environmental pollution is reduced, and the environment-friendly energy development direction is met.

The invention discloses a flow and pressure detection system of a biomass boiler. The flow and pressure detection system comprises a fuel information acquisition module, a combustion data monitoring module, a dynamic analysis module, a model construction module and a central control regulation module, the fuel information acquisition module is used for acquiring static biomass fuel information and dynamic biomass fuel information; the combustion data monitoring module is used for monitoring the combustion reaction of biomass fuel in the boiler; the dynamic analysis module is used for analyzing the biomass fuel information and generating biomass fuel frequency conversion data information; the model construction module is used for constructing a biomass boiler flow-pressure parameter linkage model; and the central control adjusting module is used for carrying out real-time detection and dynamic adjustment on flow parameters and pressure parameters of the biomass boiler. By detecting and monitoring the flow and pressure of the biomass boiler, the combustion performance and stability of the biomass boiler are improved, and the use cost is saved.

The invention relates to the field of biomass smelting furnaces, in particular to an environment-friendly biomass fuel smelting furnace which comprises a shell, a drying bin is fixedly connected to one side of the shell, a pressing plate is slidably connected into the drying bin, a screw is rotatably connected to the pressing plate, and the screw is in threaded connection with the drying bin. A cutting plate is slidably connected into the drying bin, a plurality of cutters are fixedly connected to the cutting plate, and a plurality of filtering holes are formed in the pressing plate. The inner shell is fixedly connected in the outer shell, and a plurality of air holes are formed in the two sides of the inner shell. And an air tap is rotationally connected into each air hole, and a direction adjusting plate is rotationally connected among the multiple air taps on the same side. A dust collecting groove is connected to the inner shell in a sliding mode, a front plate and a scraping plate are connected into the dust collecting groove in a sliding mode, two connecting rods are fixedly connected between the front plate and the scraping plate, the two connecting rods are both connected into the dust collecting groove in a sliding mode, and a handle is fixedly connected to the front plate. The agricultural and forestry waste is dried by utilizing the waste heat of the smelting furnace, so that the water content is reduced.

The present invention relates to a process for producing a solid biomass fuel, and product thereof, comprising: providing a biomass composition comprising at least 50 wt% wheat husk; removing dust fro

The invention discloses a biomass and coal coupled combustion system and method.The biomass and coal coupled combustion system comprises a pyrolysis reactor used for pyrolyzing biomass raw materials to generate biomass charcoal and pyrolysis gas, the pyrolysis reactor is provided with a first feeding port and a first discharging port, and the first feeding port is used for feeding the biomass raw materials; the preheating device is arranged on the pyrolysis reactor and is used for preheating the pyrolysis reactor; the combustion furnace is provided with an air inlet, a second feeding port and a coal feeding port, the second feeding port and the air inlet are both communicated with the first discharging port, and the coal feeding port is used for feeding coal. According to the biomass and coal coupling combustion system, the raw material range of biomass and coal coupling combustion can be effectively expanded, the biomass fuel treatment cost is reduced, and the coupling combustion stability and combustion efficiency are improved.

This invention discloses a method for preparing green heating fuel from fish farming waste, comprising the following steps: (1) mixing papermaking sludge with acidic electroplating solution, sealing the mixture, and then heat-insulating it; after completion, drying and grinding the obtained solid product to obtain modified papermaking sludge powder for later use. (2) draining the water from the fish farming waste filtered out, then mixing the obtained wet material with calcium carbide powder and the modified papermaking sludge powder, stirring the mixture, and collecting the gas generated during the reaction; after the reaction is completed, sealing the obtained solid product and allowing it to stand to obtain a modified fuel matrix for later use. (3) mixing the modified fuel matrix with molasses and pressing it into granules to obtain the green heating fuel. The method of this invention not only converts fish farming waste into high-value biomass fuel, but also significantly reduces the energy consumption caused by the moisture in the dried waste.

This invention discloses a biomass fuel pellet forming machine, relating to the field of biomass fuel processing technology. It includes a base and a connecting frame, with a control device mounted on the connecting frame. A support frame is fixedly mounted on the base, and a support plate is mounted on the support frame. A protective cover is mounted on the support plate, and an outlet is provided on the protective cover. A feed hood is fixedly connected to the protective cover. A drive unit is mounted on the base, and a transmission unit that cooperates with the drive unit is also mounted on the base. An extrusion mechanism for extruding biomass fuel into rod shapes is located inside the feed hood. A pelletizing mechanism for pelletizing the rod-shaped biomass fuel is mounted on the transmission unit. By incorporating the pelletizing mechanism, this device allows for flexible adjustment of the biomass fuel pellet length, thereby meeting the pellet size requirements of different production scenarios. Compared to traditional fixed-distance pelletizing structures, it offers greater adaptability, thus expanding the applicability of this device to a certain extent.

The invention belongs to the technical field of constructional engineering, and particularly relates to a factory building main body structure for biomass fuel detection, which comprises a steel structure factory building main body, a constant temperature detection room is fixedly mounted on the inner side wall of the steel structure factory building main body, and a temporary maintenance workshop is arranged in the steel structure factory building main body. An intelligent scale is fixedly mounted on the inner bottom wall of the temporary maintenance workshop, and an intelligent vehicle identification barrier gate is arranged at the front end of the intelligent scale; through a composite connection structure of an arched ridge beam and an arched string beam in a building assembly, concentrated loads are converted into dispersed stress by utilizing the mechanical property of a cambered surface, the overall bearing capacity and deformation resistance of the structure are improved, and the overall anti-seismic network constructed by an anti-seismic frame and a top beam longitudinal rod is matched with the stress dispersion design of a kidney-shaped hole array, so that the anti-seismic performance of the structure is improved. External impact and earthquake load can be effectively resisted, the risk of local damage of the structure is reduced, and reliable structural safety guarantee is provided for a plant main body and internal precision equipment.

The utility model relates to the technical field of cement plant kilns, and provides a biomass fuel auxiliary scattering and discharging device which comprises a hopper and a frame, a driving piece is arranged on the outer surface of the hopper, and the inner wall of the hopper is rotationally connected with a first scattering roller, a second scattering roller and a third scattering roller. Linkage pieces are arranged among the first scattering roller, the second scattering roller and the third scattering roller, and scattering cutters are fixedly connected to the surfaces of the first scattering roller, the second scattering roller and the third scattering roller. After the biofuel enters the hopper, a motor drives a first scattering roller to rotate through a speed reducer, a first synchronous wheel drives a second synchronous wheel and a second scattering roller to rotate through a first synchronous belt, and the first synchronous wheel drives a third synchronous wheel and a third scattering roller to rotate through a second synchronous belt, so that a scattering cutter rotates; and in addition, a vibration motor is combined, so that when the hopper is vibrated, the biofuel is convenient to discharge.

This utility model discloses a biomass fuel extrusion molding device, belonging to the technical field of biomass fuel production equipment. It includes a collection shell, with an adjustment component fixedly installed in the middle of the lower surface of the collection shell, and a material storage component fixedly connected to the inner bottom wall of the collection shell. The adjustment component controls the rotation amplitude of the inner box to adjust the overlap range between the first and second discharge troughs, thereby achieving continuous adjustment of the size of the extruded biomass fuel. This meets the diverse fuel specifications required by different combustion equipment, and eliminates the need to replace molds or the entire equipment, effectively reducing equipment replacement and maintenance costs. It also improves production flexibility and efficiency, enhances equipment adaptability and ease of operation. The material storage component allows for thorough cleaning and maintenance of the outer box interior by removing the lid, effectively preventing blockages or contamination caused by material residue and ensuring the stability of equipment operation and molding quality.

The invention relates to a device and a method for improving air permeability of a thick bed by utilizing biomass fuel. The device comprises a T-shaped frame and a cross rod, the T-shaped frames are arranged in a bilateral symmetry mode, and the horizontal ends of the T-shaped frames face downwards. The cross rod is correspondingly and fixedly connected between the upper portions of the vertical ends of the T-shaped frames on the two sides. The method comprises the following steps: S1, preparing hydrogen-rich biomass; s2, forming the biomass combustion rod; and S3, sintering application. According to the invention, biomass which is a renewable clean resource is reinforced and applied to the field of sintering production, so that carbon emission is effectively reduced, and dependence on carbon-containing fuel in the sintering process is reduced; and meanwhile, the matching device can effectively improve the material layer air permeability in the thick material layer sintering process, and the effects of increasing yield and reducing consumption are achieved.

The application relates to a biomass particle combustion system and relates to the technical field of biomass fuel application. The biomass particle combustion system comprises a fuel bin, a combustion furnace, an ash discharging device, a heat exchanging device and a dust removal device. A screw feeder is arranged between the fuel bin and the combustion furnace. The combustion furnace comprises a furnace body. A hot air chamber and a combustion chamber are arranged in the furnace body. The combustion chamber is arranged below the hot air chamber. A hot air mechanism is arranged in the hot air chamber. A plurality of ignition mechanisms are arranged in the combustion chamber. The ash discharging device is communicated with the bottom wall of the combustion chamber. The heat exchanging device is communicated with the combustion chamber. The hot air chamber and the combustion chamber are both communicated with the dust removal device. The biomass particle combustion system has the effects that biomass particles can be fully combusted, energy utilization rate is improved, and pollutant emission is reduced.

The invention belongs to the technical field of solid waste resource utilization, and particularly relates to a double-solid-waste-based carbon ash composite CO2 adsorption material and a preparation method and application thereof. The method comprises the following steps: firstly, mixing gasified fine slag and biomass fuel ash, carrying out dipping treatment, then carrying out thermal activation treatment, and then carrying out acid pickling and suction filtration to obtain an activated material; and mixing the activated material with an alkaline activator according to a set ratio, carrying out hydrothermal treatment, cooling after the reaction is finished, washing with water or alcohol until the pH value is 6-7, and carrying out secondary suction filtration to obtain the CO2 adsorption material. The preparation method is simple and low in cost, and the prepared dual-solid-waste-based carbon ash composite CO2 adsorption porous material still has good adsorption capacity and stability at the high temperature of 50 DEG C and has good popularization and application value.

The invention relates to a preparation method of cow dung biomass granular fuel, and belongs to the technical field of livestock and poultry manure treatment and biomass fuel. The method specifically comprises the following steps that fresh cow dung and wood chips serve as raw materials, the fresh cow dung and the wood chips are pretreated respectively, the water content of the fresh cow dung is 20%-32%, and the water content of the wood chips is smaller than or equal to 32%; the method comprises the following steps: proportioning the pretreated cow dung and wood chips by dry weight, with the wood chip mass fraction of 0-40wt% and the water content of 20%-32%, and then mechanically stirring to obtain a uniform mixture; and extruding and forming the mixture into the cow dung biomass granular fuel at a proper feeding rate by adopting a biomass granulator. The forming rate of the obtained cow dung pellet fuel is 99.2% or above, the mechanical durability is as high as 99.3% or above, the low calorific value can reach 16 MJ / kg or above, and the water content of a finished product is small and lower than 10%. The technological process is short and easy to operate, and the cow dung pellet fuel has the advantages of no peculiar smell, moisture resistance, mildew resistance and the like.

The utility model provides a kind of combustion engine for cow dung biomass fuel, it is related to combustion engine technical field, and combustion engine includes furnace body, first air supply mechanism, second air supply mechanism and air direction adjusting mechanism;First air inlet is provided in the lower part of the side close to furnace body feeding, and this first air inlet is located below the fire grate in furnace body, and the air outlet end of first air supply mechanism is communicated with first air inlet;Air direction adjusting mechanism is set below fire grate, and its air inlet end is communicated with first air inlet, and the air outlet end is towards the fire grate of upper side, and the air outlet direction of air outlet end is adjustable;Second air inlet is provided in the upper part of the side close to furnace body flame exit, and the air outlet end of second air supply mechanism is communicated with second air inlet.The scheme can guarantee that biomass fuel is in the relatively optimal anoxic combustion state, while making the combustible gas at combustion engine outlet fully burn, so that the energy of biomass fuel is fully released, and the energy conversion efficiency of biomass fuel is improved.

The utility model discloses a biomass fuel combustion device for making burnt pepper, which comprises a fixed bottom plate, the fixed bottom plate is of a plate-shaped structure, a support frame body is arranged on one side of the top end of the fixed bottom plate, a feeding assembly is mounted at the top end of the support frame body, and the top end of the feeding assembly penetrates through a combustion hearth. A feeding hopper is arranged above the feeding assembly, the combustion hearth is arranged on the other side of the top end of the fixed bottom plate, and an air blowing assembly is arranged on one side of the combustion hearth. According to the biomass fuel combustion device for making the burnt peppers, the cross section of the whole fire grate body is of an inclined structure, when residues are collected subsequently, the residue collecting assembly only needs to be rotated at the position of the residue removing opening, and in the whole process, the residues are not prone to falling off. According to the slag removal device, the slag can be thoroughly removed without manually taking an external deflector rod to swing in the hearth in a large range by a worker, the operation is convenient, and the slag removal effect is better.

The invention relates to the technical field of biomass fuel heat supply, in particular to a biomass fuel heat supply device for waste acid cracking, which comprises a combustion furnace, a combustion chamber is arranged on the combustion furnace, a smoke conveying pipe is fixed at one end of the combustion furnace, and a dust separator is fixed at the other end of the smoke conveying pipe; a dust removal cloth bag mounting plate is fixed on the inner wall of the dust separator; the biomass fuel recycling device has the beneficial effects that dust in smoke is separated, the separated dust falls into the recycling box, and after the recycling box is full, the dust in the recycling box and new biomass fuel can be poured into the combustion chamber together to be combusted again, so that the combustion efficiency of the biomass fuel is improved; meanwhile, the dust is separated from the flue gas and then conveyed to the waste acid cracking device through the flue, so that the scouring of the flue gas to the inner wall of the flue can be reduced, the abrasion is reduced, the service life of the flue is prolonged, the dust can be prevented from being adhered to a heated surface, and the effects of preventing the heat efficiency from being reduced and preventing the flue from being blocked and corroded are achieved.

This invention belongs to the field of pellet mill technology, specifically relating to a biomass fuel compression pellet mill, including a base and a drive mechanism mounted on the base. The drive mechanism has an output shaft and a hopper. It also includes a pressure roller assembly, which includes a strip frame fixedly mounted on the output shaft. A pressure roller shaft is eccentrically mounted on the strip frame, and a pressure roller is fixedly mounted on the pressure roller shaft. A ring die is fixedly mounted inside the hopper and sleeved on the pressure roller. In this biomass fuel compression pellet mill, the output shaft drives the pressure roller to revolve, while a coaxial forward / reverse mechanism, in conjunction with a rotating connection mechanism, drives the pressure roller shaft to actively rotate. After the adjustment mechanism adjusts the gap between the pressure roller and the ring die, even if the distance between the pressure roller shaft and the sleeve changes, the two connecting rods in the rotating connection mechanism can flexibly swing around the sleeve and the pressure roller shaft, causing the connecting gear on the movable shaft to adaptively adjust its position, always maintaining stable meshing with the driving gear and the driven gear.

This prevents the risk of biomass fuel igniting and also prevents the biomass fuel from becoming too moist, which can accelerate fermentation. [Solution] A boiler system 100 is provided, comprising: a mill 12 for crushing biomass fuel; a fuel storage tank 20 for storing biomass fuel; a transport unit 30 for transporting biomass fuel; a boiler 40 that generates steam by burning the biomass fuel crushed by the mill 12 in a combustion device 41; and an exhaust gas extraction unit 90 that branches off a portion of the exhaust gas G flowing through an exhaust gas passage L1 that guides the exhaust gas G discharged from the boiler 40 to a chimney 71 and guides it to at least one of the fuel storage tank 20 and the transport unit 35. The exhaust gas extraction unit 90 includes a cooler 92 that cools the exhaust gas G by heat exchange with a heat transfer medium that is not mixed with the exhaust gas G, and a dehumidifier 93 that removes some of the moisture from the exhaust gas G cooled by the cooler 92.

The invention relates to the field of biomass-fire coal coupling generator sets. The screening system comprises mixing equipment arranged on one side of an inlet of a combustion furnace, a biomass crushing bin, a fire coal crushing bin, a uniform mixing assembly and a humidity measuring assembly, wherein the biomass crushing bin and the fire coal crushing bin are arranged at an inlet of the mixing equipment, the uniform mixing assembly is arranged in the mixing equipment, and the humidity measuring assembly is arranged in the mixing equipment. A shear type crushing roller is arranged in the biomass crushing bin, a hammer type crushing roller is arranged in the fire coal crushing bin, the uniform mixing assembly comprises a biomass uniform mixing piece and a fire coal particle uniform mixing piece, the rotating speed of the biomass uniform mixing piece and the rotating speed of the fire coal particle uniform mixing piece are independently adjusted, and the mixing device comprises a barrel and is internally provided with a partition plate which divides the mixing device into a biomass bin and a fire coal bin. The biomass crushing bin is communicated with the biomass bin, the fire coal crushing bin is communicated with the fire coal bin, and a uniform mixing bin is arranged on the bottom side of the mixing equipment. The biomass fuel and the fire coal are fully mixed, and the particle sizes are kept consistent, so that the problem of insufficient and uniform combustion is solved.

The invention provides a biomass fuel preparation blending combustion control system and method based on an electricity price valley period, and belongs to the technical field of biomass fuel preparation blending combustion control. In order to make full use of off-peak power and construct an economical, efficient and environment-friendly biomass fuel preparation and blending combustion system, the adopted technical scheme is that an electricity price prediction module and a task scheduling module are arranged in an intelligent scheduling and control unit, and the intelligent scheduling and control unit is electrically connected with a power plant distributed control system through a wire; the efficient fuel preparation unit is electrically connected with the intelligent dispatching and control unit through a wire, and the intelligent dispatching and control unit sends out an instruction to control the efficient fuel preparation unit to operate at a high load in a low-ebb electricity price period. A closed negative-pressure raw material shed, a steam rotary dryer, a granulator, a briquetting machine and a storage and conveying system are sequentially arranged in the efficient fuel preparation unit in the material flow direction; the method is applied to blending combustion control of biomass fuel preparation.

To provide a method for recycling coffee grounds.SOLUTION: The present invention provides a method for recycling coffee grounds and a recycled coffee grounds product. The recovery of the wet coffee grounds used by adding hot water can effectively recycle the coffee grounds through the coffee grounds recycling method of the present invention, i.e., the pre-drying step S101, the grinding and sieving step S102, the mixing step S103, the forming step S104, the drying step S105, and the finished product packaging step S106, thereby effectively improving the stability in the production process and satisfying the standard conditions of the raw materials for mass production.SELECTED DRAWING: Figure 1

The utility model relates to the technical field of biological energy sources, discloses a storage device for biomass fuel production, and solves the problems that in the biomass fuel storage process, bad gas is accumulated due to non-uniform gas transmission and non-smooth gas exhaust, and internal moisture, caking and the like are caused due to lack of an effective material stirring means. Through the gas conveying and exhausting structures, uniform gas conveying and intermittent gas exhausting are achieved, accumulation of bad gas is effectively avoided, and the moisture phenomenon is prevented; meanwhile, the device is ingeniously provided with an outer cylinder, an inner cylinder, a driving part, a material stirring mechanism and other core components, stable rotation of the inner cylinder is achieved by means of cooperative operation of a driving motor driving gear and a fluted disc, and meanwhile the material stirring mechanism continuously stirs to prevent fuel from caking; the air holes in the exhaust pipe and the inner cylinder are used for ensuring that air is exhausted in time and circulates according to needs, air pressure balance is maintained, the storage condition of biomass fuel is optimized, and high efficiency and stability of fuel storage are powerfully guaranteed.

The present invention comprises: a combustion device 2 that uses biomass fuel T as fuel; a drying unit 32 that dries the biomass fuel T; and a supply device 7 that supplies, to the drying unit 32, heat medium gas containing at least one of exhaust gas from the combustion device 2 and gas heated by heat exchange with the exhaust gas. The supply device 7 controls at least one of a flow rate and a temperature of the heat medium gas supplied to the drying unit 32 on the basis of the moisture content of the biomass fuel T.