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258 results about "Biomass fuels" patented technology

A biofuel is a fuel that is produced through contemporary processes from biomass, rather than a fuel produced by the very slow geological processes involved in the formation of fossil fuels, such as oil. Since biomass technically can be used as a fuel directly (e.g. wood logs), some people use the terms biomass and biofuel interchangeably.

A boiler blending biomass fuel coupled with chemical looping combustion system

ActiveCN121140004BCombustion systemData set
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.
Owner:DATANG FUZHOU SECOND POWER GENERATION CO LTD

Flow and pressure detection system of biomass boiler

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.
Owner:CHANGSHA LONGZHENG ENVIRONMENTAL PROTECTION TECH CO LTD

Environment-friendly biomass fuel smelting furnace

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.
Owner:冯嘉伟

A method for preparing green heating fuel by using fish culture leftover feed and feces

PendingCN122278532ASludgeFish farming
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.
Owner:QINGDAO HARBIN INSTITUTE OF TECHNOLOGY (WEIHAI)

A biomass fuel pellet forming machine

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.
Owner:SHANDONG YITAI BIOMASS FUEL CO LTD

Plant building main body structure for biomass fuel detection

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.
Owner:HARBIN ENG NORTH RICE TECH CO LTD

Biomass fuel auxiliary scattering and discharging device

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.
Owner:GUIYANG HAILUO PANJIANG CEMENT CO LTD

Biomass fuel extrusion forming device

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.
Owner:HENAN ZEKAI NEW ENERGY CO LTD

Device and method for improving air permeability of thick bed by using biomass fuel

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.
Owner:BENGANG STEEL PLATES CO LTD

Combustion machine for cattle dung biomass fuel

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.
Owner:马迅

Biomass fuel combustion device for making burnt pepper

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.
Owner:GUIZHOU GANJI SPICY XIANWANG FOOD CO LTD

A biomass fuel compression pellet mill

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.
Owner:GUANGDONG ZHANZHUO TECH CO LTD

Boiler system

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.
Owner:MITSUBISHI HEAVY IND LTD

Method for recycling coffee grounds

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
Owner:张智闵

Storage device for biomass fuel production

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.
Owner:HUBEI SHENGYUYUAN CHEM CO LTD

Combustion furnace system and method for burning biomass fuel

PendingAU2024395995A1CombustionGas supply
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.
Owner:SUNTORY HLDG LTD

A biomass fuel auger with iron material removal function at the discharge port

This invention relates to the field of auger technology, and in particular to a biomass fuel auger with an iron material removal function at the discharge port. It includes an auger body, a first magnet, and a circular tube. A funnel is located above the material container, and a second magnet is located on the inner wall of the funnel. A third magnet is located on the top of the first T-shaped component. By configuring the first magnet, circular tube, second magnet, funnel, and third magnet, the third magnet initially adsorbs the iron material inside the descending biomass fuel powder. Multiple first magnets then perform a secondary adsorption of the iron material inside the biomass fuel powder. The biomass fuel powder accurately enters the material container from the funnel. The second magnet then performs a tertiary adsorption of the iron material inside the biomass fuel powder. This process removes the iron material inside the biomass fuel powder during filling, reducing the number of production steps and improving the production efficiency of biomass fuel.
Owner:WUHAN FUHUISHUN NEW ENERGY TECH CO LTD

Biomass fuel conveying device and biomass combustion system with same

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.
Owner:BEIJING HUIYU ENERGY CO LTD

Anti-arching device of biomass fuel storage bin

The utility model relates to the technical field of biomass fuel storage, and discloses an anti-arching device of a biomass fuel storage bin, which comprises an outer cylinder, a plurality of groups of support components are fixedly connected in the outer cylinder, one end of each support component is fixedly connected with an inner cylinder, a plurality of groups of support hoppers are sleeved in the inner cylinder, and the support hoppers are fixedly connected with the outer cylinder. One side of the inner cylinder communicates with a connecting assembly, one end of the connecting assembly communicates with a heating box, the back face of the heating box communicates with an air blower, the top of the outer cylinder is fixedly connected with a top cover, and the bottom of the top cover is fixedly connected with a stirring rod. According to the anti-arching device of the biomass fuel storage bin, through the arrangement of the connecting assembly, the heating box and the air blower, the effect of drying the surface of fuel is achieved, meanwhile, the inner barrel is separated through the supporting hopper, then multi-layer drying is achieved, the temperature in the bin is kept stable, arching of the fuel caused by too heavy moisture is reduced, and the dryness of the fuel is improved.
Owner:JIANGSU YUNZHILAN ENVIRONMENTAL PROTECTION TECH CO LTD

A biomass fuel and its preparation method

ActiveCN116855290Bplay a role in combustionhigh calorific valueBiofuelsSolid fuelsEnvironmental engineeringFire retardant
This invention provides a biomass fuel and its preparation method, belonging to the field of waste utilization technology. This invention mixes different waste materials to prepare biomass raw materials, and simultaneously utilizes microbial strains to transform the organic flame retardants contained in the waste raw materials into new flammable agents through biochemical reactions. The prepared biomass fuel has high calorific value, low smoke and dust, and excellent combustion performance, making rational use of various waste materials, and is environmentally friendly, efficient, and energy-saving. The results of the embodiments show that the biomass fuel prepared by this invention has a calorific value of 35.6 MJ / kg, a calorific value of 4100 cal / g, a combustion efficiency of 99.1%, and low smoke and dust.
Owner:ZHONGZHI KANGYUAN BIOTECHNOLOGY (CHONGQING) CO LTD

Biomass combustion system capable of achieving partitioned feeding

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.
Owner:BEIJING GUORUI MINGHE TECHNOLOGY CO LTD

Biomass particle fireplace based on thermoelectric power generation

The utility model relates to the technical field of biomass fuel equipment. A biomass particle fireplace based on thermoelectric power generation comprises a fireplace body, the surface of the fireplace body is provided with a hearth, a feeding port and a charging box, the charging box is placed at the bottom of the hearth, a plurality of heat dissipation pipes are arranged above the hearth, and a thermoelectric power generation assembly, a feeding assembly and a smoke exhaust preheating assembly are arranged in the fireplace body. The hearth is matched with the feeding assembly to conduct continuous combustion heating. According to the biomass particle fireplace based on thermoelectric power generation, self power generation and power supply can be carried out through the internal and external temperature difference during fireplace combustion, heat energy of the fireplace is converted into electric energy, the heat supply requirement can be met, meanwhile, the comprehensive utilization rate of combustion can be increased, and self power supply of fireplace equipment is achieved. The technical problems that in the prior art, part of heat of an existing biomass fireplace is wasted, the fuel utilization rate is reduced, fireplace equipment needs to be supported by an external power source and is limited by electric power supply, and use inconvenience is increased are solved.
Owner:NINGBO PRECISE MASCH CO LTD

Improved domestic biomass fuel stove

The utility model relates to fuel furnace technical field especially relates to an improved household biomass fuel furnace. Including furnace body base and furnace body top board, be installed with combustion chamber on furnace body base, be installed with inner bag on combustion chamber, and the outer barrel of furnace body is set up to the outside of combustion chamber and inner bag and is connected through the heat dissipation through board between the top of inner bag and the outer barrel of furnace body, and the grid side plate is connected between furnace body base and furnace body top board, and the furnace body baffle is connected in the inside of the outer barrel of furnace body, and the bunker is installed at the bottom of furnace body top board, and the bunker bottom is connected through the feeding mechanism with combustion chamber, and the air inlet fan is installed in furnace body base, and the air inlet fan is connected through the air inlet pipe with combustion chamber, and the smoke extraction fan is installed in furnace body base, and the suction end of smoke extraction fan is equipped with the smoke pipe. The utility model provides an improved household biomass fuel furnace, makes the household biomass fuel furnace to get further popularization, and improves the user experience.
Owner:WEIXIN COUNTY PENGJIN AUTOMOBILE SALES CO LTD

Biomass heating and cooking dual-purpose furnace

ActiveCN223795313ULighting and heating apparatusStove/ranges for heating waterThermodynamicsProcess engineering
The biomass heating and cooking dual-purpose furnace comprises a furnace body, a combustion mechanism and a storage mechanism, the combustion mechanism and the storage mechanism are arranged in the furnace body and distributed front and back, the combustion mechanism comprises a combustion cavity, a filling layer is fixedly installed on the upper portion of the interior of the combustion cavity, and a furnace pipe is fixedly installed in the center of the interior of the filling layer; the utility model relates to the technical field of heating cooking furnaces. According to the biomass heating and cooking dual-purpose furnace, through cooperation of the storage cavity, the lifting plate and the pushing auger, biomass fuel can be automatically discharged into the furnace, the function of automatic filling during operation of the dual-purpose furnace is achieved, meanwhile, the number during filling can be controlled, the accuracy of automatic filling in the dual-purpose furnace every time is ensured, and the working efficiency is improved. Waste heat generated during operation of the dual-purpose furnace can be collected through the water boiling inner container, so that water stored in the dual-purpose furnace can be heated, the function of boiling water through the waste heat is achieved, and people can take and use hot water conveniently during cooking.
Owner:SHANDONG DUOLE NEW ENERGY TECH CO LTD

Low cost environment-friendly papermaking pulping process

PendingCN122082275AReduce causticizing rateReduce pulping costsPulp liquor regenerationMultistage pulping processFiberBlack liquor
This invention provides a low-cost and environmentally friendly papermaking pulping process, comprising the following steps: S1. Pretreatment of papermaking fiber plant raw materials. S2. Oxy-alkali cooking: The pretreated papermaking fiber plant raw materials are mixed with an aqueous sodium carbonate solution, and cooked for 0.5–5 hours using oxygen as an oxidant. Then, sodium hydroxide is added, and cooking continues for 0.3–2 hours. Finally, the pulp and black liquor are separated by pressing. S3. Black liquor treatment: The black liquor is mixed with fiber waste, pressed, and burned as biomass fuel. S4. Recovery and causticization. This papermaking pulping process uses sodium carbonate and a small amount of sodium hydroxide for staged oxy-alkali pulping, and the generated black liquor is mixed with fiber waste and burned to recover sodium carbonate and heat, reducing the causticization rate and pulping costs.
Owner:SHENZHEN DEWEI INTELLIGENT MFG TECH CO LTD

Fuel feeding automatic control strategy for biomass circulating fluidized bed boiler

ActiveCN121089035BAutomatic controlAir volume
This invention discloses an automatic fuel feeding control strategy for a biomass circulating fluidized bed boiler, solving the problem of how to automatically control the rational supply of biomass fuel in the furnace to ensure stable boiler operation. This invention uses changes in the oxygen content of the flue gas at the boiler tail end to infer changes in the furnace fuel feed. Under the premise of constant air volume, an increase in oxygen content indicates a decrease in biomass fuel feed, while a decrease in oxygen content indicates an increase in biomass fuel feed. A PID control module is established with the oxygen content of the flue gas at the boiler tail end as the input value. The output value of this PID control module is used to adjust the frequency of the fuel feed screw feeder in the biomass circulating fluidized bed boiler. Furthermore, considering the unstable characteristics of biomass fuel, when the oxygen content in the furnace reaches a limit, the feedforward control mode and the lockout function mode of the PID controller are fully utilized to achieve stable boiler operation.
Owner:TAIYUAN BOILER GROUP

Drying system and drying method

A drying system that can operate even during maintenance of a hot air generator using biomass fuel. [Solution] A drying treatment system 10 comprising a hot air generating unit 20 that generates hot air HA, and a drying unit 50 that dries a material to be processed UB derived from livestock excrement with the hot air while stirring, wherein the hot air generating unit has a first hot air generating device 21 that uses biomass fuel and a second hot air generating device 32 that uses fossil fuel, and the first hot air generating device and the second hot air generating device are each connected to the drying unit and are interconnected.
Owner:KURABO INDUSTRIES LTD

A biomass boiler feeding device

The present application relates to the technical fields of biomass boiler, especially to a biomass boiler feeding device, which comprises a shell including a containing part and a feeding hopper arranged on the containing part; an output mechanism including a driving member arranged on the containing part and a movable coupling arranged on the output end of the driving member, the driving member being connected with a barrel through the movable coupling; a limiting mechanism arranged on the movable coupling; the surface of the barrel is uniformly provided with through holes, and the barrel is provided with an extrusion knife; the biomass garbage is dried by using the heat of the boiler, and the biomass garbage is crushed by the rotation of the barrel and the extrusion knife, so that the size of the biomass fuel particles is more uniform; since the biomass garbage falling from the extrusion is uniformly dropped, the generation of the phenomena of insufficient combustion, coking and ash accumulation caused by the moisture content, material accumulation and uneven particles can be avoided.
Owner:HUANENG POWER INT INC JINGGANGSHAN POWER PLANT

Biomass blocky fuel mixing and feeding device

The utility model discloses a biomass blocky fuel mixing and feeding device, which relates to the technical field of biomass fuel processing, and comprises a feeding bin and a conveying mechanism, the lower end of the feeding bin is fixedly connected with a material guide port I and a material guide port II; the feeding opening of the first material guiding opening and the feeding opening of the second material guiding opening correspond to the upper end of the conveying mechanism and are arranged in a staggered mode, buffering control mechanisms are arranged in the first material guiding opening and the second material guiding opening, a communicating mechanism is arranged at the tail end of the conveying mechanism and comprises a mixing pipe and a communicating pipe, the mixing pipe is connected with the tail end of the conveying mechanism, and the communicating pipe is connected with the tail end of the conveying mechanism. The communicating pipe is communicated with the material elevator; the utility model discloses a biomass blocky fuel mixing and feeding device. Through mutual cooperation and action of the first material guide port, the second material guide port, the communicating mechanism and the buffer control mechanism, the problems that a traditional biomass fuel mixing and feeding device is low in efficiency, large in impact, much in dust and the like are effectively solved, and the biomass fuel mixing and feeding device has remarkable technical advantages and application value.
Owner:HUIZHOU YAOBANG ENVIRONMENTAL PROTECTION TECH CO LTD