594 results about "Biomass boiler" patented technology

The invention relates to the technical field of intelligent heat supply, in particular to a multi-source energy fusion agricultural greenhouse intelligent heat supply and regulation and control system, which comprises a multi-source energy acquisition module for acquiring energy output parameters of a solar heat collector, a geothermal well and a biomass boiler in real time and monitoring external meteorological data of a greenhouse; the energy dynamic matching module is used for generating an energy scheduling strategy through a dynamic priority algorithm and outputting a target energy type and supplied energy; the energy storage buffer module is used for storing or releasing the supplied energy and outputting the temperature and the residual capacity of an energy storage medium; the multi-parameter coupling regulation and control module is used for generating a regulation and control instruction through an environment parameter coupling model; the actuating mechanism driving module is used for converting the regulation and control instruction into control signals of a heater, a fan and a humidifier; the self-learning optimization module is used for dynamically correcting the dynamic priority algorithm and the environment parameter coupling model; according to the invention, through multi-parameter cooperative regulation and dynamic optimization, crops are ensured to be in the optimal environmental conditions in different growth stages.

The invention discloses biomass boiler flue gas denitration equipment, which belongs to the field of flue gas treatment, and comprises a denitration cylinder, a flue gas inlet pipe is fixedly mounted on one side of the denitration cylinder, a filter screen is fixedly mounted on one side, close to the flue gas inlet pipe, of an inner cavity of the denitration cylinder, and the denitration cylinder further comprises a mixing assembly, a flue gas inlet pipe and a flue gas outlet pipe, the mixing assembly comprises a round frame rotationally mounted in an inner cavity of the denitration cylinder, retarding plates are uniformly and fixedly mounted on the round frame, round openings are uniformly formed in each group of retarding plates, circular ring holes are formed in the outer sides of each group of round openings, and each group of circular ring holes are formed in the adjacent retarding plates; according to the flue gas denitration device, the contact duration of flue gas and ammonia gas can be prolonged, the mixing effect of the flue gas and the ammonia gas can be improved, the situation that in the past, the flue gas is high in flow speed and difficult to fully mix and react with the ammonia gas, and consequently the ammonia escape phenomenon is caused can be avoided, the safety of the reaction of the flue gas and the ammonia gas can be effectively improved, and the flue gas denitration effect is improved.

The invention relates to the technical field of energy conservation and environmental protection, and discloses a biomass oxygen-enriched combustion optimization and pollutant intelligent control system and method.The biomass oxygen-enriched combustion optimization and pollutant intelligent control system comprises a boiler temperature and pressure prediction system, a fuel prediction regulation and control system, a primary and secondary air prediction regulation and control system, a flue gas amount prediction system, a flue gas recirculation regulation and control system and a desulfurization and denitrification intelligent control system; the fuel prediction regulation and control system comprises a fuel identification module, a fuel heat value prediction module and a fuel demand prediction module; the primary and secondary air predictive regulation and control system comprises a primary air calculation module and a secondary air calculation module; the flue gas quantity prediction system comprises an induced draft fan control module and a flue gas prediction module; the flue gas recirculation regulation and control system comprises a recirculation quantity prediction module and a supplement quantity prediction module; the desulfurization and denitrification intelligent control system comprises a pollutant prediction module, a desulfurization agent prediction module and a denitrification agent prediction module. According to the invention, dynamic optimization and accurate control of the biomass boiler under the oxygen-enriched combustion condition can be realized.

The invention discloses a method for preparing methanol from carbon dioxide by coupling biomass direct combustion with wind, light, green and hydrogen. The method comprises the following steps: feeding biomass into a biomass boiler through a screw feeder and a trestle for direct combustion to obtain flue gas with high carbon dioxide content; the flue gas is treated to generate carbon dioxide gas with the pressure ranging from 1.4 MPaG to 1.6 MPaG; the method comprises the following steps: mixing carbon dioxide gas and hydrogen according to a molar ratio of about 1: 3, and compressing the mixture into 9.0 MPaG synthesis gas through a synthesis gas compressor; the synthesis gas flows to a gas-gas heat exchanger for heat exchange and temperature rise, and then is introduced into a methanol synthesis tower to form a material; the materials are subjected to heat exchange and cooling through a gas-gas heat exchanger and then flow to a high-pressure flash tank to be separated to form first gas and first liquid; the first liquid flows to a low-pressure flash tank to be separated to form second gas and second liquid conveyed to a crude methanol rectifying tower; separating and purifying the crude methanol in a rectifying tower to form methanol, fusel and overhead gas flowing to the biomass boiler; the utilization rate of the biomass carbon is improved.

The invention discloses an SCR denitration system for biomass boiler flue gas, and belongs to the technical field of SCR denitration, the SCR denitration system comprises an SCR denitration device, a flue gas diversion pipeline, a diversion mechanism and a detection mechanism, the SCR denitration device comprises a reactor body and a plurality of groups of catalyst modules arranged in the reactor body; the flue gas guide pipeline is respectively communicated with the economizer and the gas inlet end of the reactor body; the detection mechanisms comprise a plurality of groups of flow guide mechanisms, and each group of flow guide mechanism is positioned above the corresponding catalyst module and is used for guiding, regulating and controlling the flow direction and the flow rate of the biomass boiler flue gas; each detection mechanism is located between the corresponding catalyst module and the flow guide mechanism, and the detection mechanisms are used for monitoring the flow speed and distribution of the biomass boiler flue gas flowing through the catalyst modules. The flue gas flow of the biomass boiler can be accurately controlled, uniform distribution of the flue gas of the biomass boiler in the catalyst module is ensured, the service life of an SCR denitration catalyst is prolonged, and the working efficiency of the SCR denitration catalyst is improved.

The invention relates to the technical field of boiler flue gas sampling, in particular to a biomass boiler in-situ flue gas sampling system and an operation method.The biomass boiler in-situ flue gas sampling system comprises a constant-speed sampling nozzle and a smoke dust sampling pipe, the constant-speed sampling nozzle is communicated with the smoke dust sampling pipe, the biomass boiler in-situ flue gas sampling system further comprises a flue gas heat preservation unit and a fly ash collecting device, and a ventilation support is installed at the bottom of the smoke dust sampling pipe; an air pipe connector is arranged at the bottom of the ventilation support. Under the high-temperature combustion environment of the biomass boiler, firstly, the flue gas temperature is kept unchanged during sampling through the flue gas heat preservation unit, then constant-speed sampling of flue gas is achieved through the flue gas acceleration nozzle arranged at the front end of the sampling system, particulate matter sampling is conducted on the flue gas through the flue gas sampling pipe on the premise that the temperature is not changed, and the sampling efficiency is improved. The gas-solid separation of the flue gas and the in-situ collection of the fly ash particles are realized, and the interference of condensation and deposition of gaseous inorganic substances and the like on residual ash particle sampling caused by the reduction of the temperature of the flue gas is prevented.

The invention discloses an integrated biomass unattended energy station, and belongs to the field of power generation equipment, the integrated biomass unattended energy station comprises a biomass boiler and a recycling bin, the lower side of the outer surface of the recycling bin is fixedly connected with a circulation sleeve, the outer surface of the upper end of the biomass boiler is fixedly connected with a gas guide pipe, and the lower end of the gas guide pipe is fixedly connected with the outer surface of the circulation sleeve; an evaporation assembly used for producing water vapor is arranged on the inner side of the recycling box and comprises a first supporting plate fixedly connected with the inner surface of the recycling box, and an evaporation pipe is fixedly connected with the outer surface of the upper end of the first supporting plate. By arranging the evaporation assembly, smoke makes contact with the outer surface of the evaporation pipe so that the evaporation pipe can be heated, water continues to be heated and evaporated through waste heat of the smoke of the biomass boiler, and therefore the generation amount of steam can be increased, and reduction of heat loss of the biomass boiler is facilitated; therefore, the energy utilization efficiency of the biomass fuel can be improved.

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

The invention discloses a biomass boiler fuel adaptability enhanced feeding system and a control method. The biomass boiler fuel adaptability enhanced feeding system comprises a feeding device, a fuel pretreatment module, a multi-parameter detection module, a control unit and an execution mechanism. The feeding device comprises a screw feeder and a vibrating feeder which are arranged in parallel, outlets of the screw feeder and the vibrating feeder are converged into the same blanking channel, a wear-resistant ceramic lining plate is laid on the inner wall of the channel, and a pneumatic arch breaker is mounted at the bottom of the channel. Through a multi-stage pretreatment and intelligent feedback control cooperation mechanism, the adaptability of the complex biomass fuel is remarkably improved. The two-stage pretreatment module effectively breaks caking, screens out overrun particles and adjusts the water content, and the blocking risk is eliminated from the source; multi-parameter real-time detection is combined with a self-adaptive control algorithm, the feeding rate and the air-coal ratio are dynamically optimized, the combustion stability is ensured, and the heat efficiency is remarkably improved; due to the abnormal working condition self-diagnosis function, the manual intervention frequency is reduced, and multi-fuel combustion of multiple components in any proportion is supported.

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 relates to the technical field of boiler control and environmental protection, and discloses a control method for continuously monitoring biomass boiler flue gas, which comprises the following steps: S1, collecting the concentration data of pollutants in the biomass boiler flue gas in real time, the pollutants including carbon monoxide, carbon dioxide, nitrogen oxide and sulfur dioxide; s2, the collected pollutant concentration data are transmitted to a data processing module, the control system for continuously monitoring the biomass boiler flue gas is further provided and used for executing the control method for continuously monitoring the biomass boiler flue gas, and the control system comprises a data collection module, a data processing module and a data processing module, the sensor array is used for collecting temperature, pressure and pollutant concentration data in boiler flue gas in real time through the sensor array. According to the method, real-time data and an optimization algorithm are combined, the pollutant concentration is predicted through Kalman filtering denoising and a multi-factor mathematical model, boiler operation parameters are dynamically adjusted, the energy efficiency is improved, pollutant emission is reduced, and the problems of inaccurate control and slow response in the traditional technology are solved.

The utility model relates to the technical field of smoke dust treatment, and discloses a smoke dust removal device capable of recycling waste heat of a biomass boiler, which comprises a boiler, an electric telescopic rod is slidably connected to one side of the top end of the boiler, a motor is rotatably connected to the top of the electric telescopic rod, and a connecting rod is fixedly connected to the driving end of the electric telescopic rod. And cleaning frames are fixedly connected to the peripheries of the upper portion and the lower portion of the connecting rod, sliding plates are slidably connected to the interiors of the cleaning frames, and brushes are fixedly connected to the sides, away from each other, of the two sliding plates. According to the utility model, the dust on the inner wall of the boiler is removed through the dust removal mechanism, so that dust on the inner wall of the boiler device is not increased, the usability of the device is not reduced, the service life of the device is not shortened, and particulate matters and dust generated by biomass combustion can be effectively captured and removed through the dust prevention mechanism, so that the amount of particulate matters discharged by the boiler is reduced; air pollution is reduced, and the surrounding environment is protected.

The invention discloses a method for preparing biochar through low-temperature carbonization of furfural residues and application, and the method comprises the following steps: pretreatment of furfural residues: carrying out dynamic drying by using superheated steam generated by a biomass boiler, so that the moisture content is reduced to be less than or equal to 25%; carrying out particle reinforced molding, namely mixing the furfural residues with corn straws and wheat straws, and carrying out granulation molding; carrying out segmented low-temperature carbonization, sequentially carrying out drying preheating, ash removal and carbonization stages on the particles, and enabling the hardness of the carbonized particles to reach 8MPa; by-products are recycled, pyrolysis non-condensable gas is used for boiler combustion, condensate can be used as liquid organic fertilizer, heat treatment activation is carried out, and carbonization is carried out for 2 h in a nitrogen environment at the temperature of 600 DEG C; washing and drying: washing with hydrochloric acid (HCl), and drying at 80 DEG C for 24 hours; the method solves the technical problems of high energy consumption in the furfural residue carbonization process and limited application range of carbonized products in the prior art, also solves the problems of limited adsorption capacity and difficult recovery of common charcoal, and is suitable for the environmental protection fields of heavy metal wastewater treatment, pollution remediation and the like.

The invention discloses a biomass power plant dead steam and flue gas waste heat integrated recovery heat supply device which comprises the following components: a biomass boiler used for combusting biomass fuel and generating high-temperature steam, and a flue gas outlet of the biomass boiler is connected to a flue gas emission reduction and waste heat recovery integrated unit; a steam inlet of the steam turbine is connected with a high-temperature steam outlet of the biomass boiler, and a steam outlet of the steam turbine is connected to a high-temperature side inlet of the steam exhaust heat exchanger and a high-temperature side inlet of the condenser through valves; the steam exhaust heat exchanger is connected with the condenser. When the device is implemented, waste steam latent heat and flue gas sensible heat / latent heat are recovered in a stepped manner, so that the comprehensive heat efficiency is remarkably improved; seasonal mode switching is achieved through an arranged intelligent control system, namely flue gas waste heat is recycled preferentially in summer, and steam exhaust heat supply is combined in winter; fuel cost is counteracted through waste heat sales income, and the income during implementation of the device is increased.

The invention discloses a fire grate ash removal structure for a biomass boiler, and relates to the technical field of pipeline cleaning, the fire grate ash removal structure comprises a boiler structure, the boiler structure comprises a boiler body, a combustion furnace, a rotary chamber and a flow dividing chamber, and a plurality of first heat exchange pipes and a plurality of second heat exchange pipes are fixedly connected between the rotary chamber and the flow dividing chamber; a first blocking frame is fixedly connected between the flow dividing chamber and the inner wall of the boiler body, a pipeline dredging structure is arranged between the rotary chamber and the flow dividing chamber, a plurality of first heat exchange pipes and a plurality of second heat exchange pipes are fixedly connected between the rotary chamber and the flow dividing chamber, and a second blocking frame is fixedly connected between the flow dividing chamber and the inner wall of the boiler body. A pipeline dredging structure is arranged between the rotary chamber and the flow dividing chamber, a transmission assembly and a back-flushing cleaning assembly are installed in the boiler body, and dust and impurities attached to the interiors of the second heat exchange pipes can be rapidly cleaned.

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

The invention discloses a multi-fuel mixing proportion intelligent optimization control method for a variable-working-condition biomass boiler, and relates to the technical field of fuel control. Comprising the following steps: collecting industrial analysis data of various coal types, and recording combustion test data of each coal type; training a neural network model; acquiring a preset load and an initialized fuel proportion as original mixed coal, inputting the original mixed coal into the trained model, and acquiring combustion test data of the original mixed coal; calculating a predicted load and a preset deviation; calculating a proportion correction coefficient, and correcting the proportion of each component of the original mixed coal through a correction method. According to the method, the neural network model is trained through multiple fuel components, hidden influences among different components can be reserved, correction is repeated, the fuel proportion is changed as small as possible according to the previous correction result in each correction, historical data are further fitted, the component proportioning habit is continued, the method adapts to the stock of all the components of the fuel, and the fuel efficiency is improved. And emergencies are prevented.

The utility model relates to a solar energy and biomass energy coupled combined heat and power generation system which comprises an air preheater, a biomass boiler, a PV / T, a solar vacuum tube collector, a first-stage organic Rankine cycle assembly, a second-stage organic Rankine cycle assembly and a jet type refrigeration cycle assembly. A fluid outlet of the PV / T is connected with a fluid inlet of the solar vacuum tube collector, a smoke outlet of the biomass boiler is connected with a hot fluid inlet of the air preheater, and a cold fluid outlet of the air preheater is connected with an air inlet of the biomass boiler. According to the utility model, by designing a two-stage organic Rankine cycle structure, solar energy and biomass energy are better coupled, and the stability of the system is improved.

The invention discloses a biomass boiler flue gas recycling system and method, and belongs to the technical field of biomass boilers. In order to solve the problems that in the prior art, a filter screen needs to be frequently shut down for cleaning, and flue gas waste heat is not fully utilized, the system adopts the following technical scheme that the system comprises a coarse filter cylinder, a water storage cylinder, a desulfurization tower and a bag-type dust collector which are connected in sequence. A rotatable rotating ring is arranged in the coarse filter cylinder, a plurality of metal filter screen dust removers are mounted on the rotating ring, and non-stop replacement and filtration are realized through driving of a rubber wheel; a reverse flushing structure is arranged in the cleaning box, and a cam is used for driving a floating plate to spray water to the filter screen to be cleaned. A hollow rotating disc driven by a rotating pipe and a heat exchange pipe are arranged in the water storage cylinder, the air gathering plate is driven by smoke flowing to drive the heat exchange pipe to rotate, and water-smoke heat exchange is enhanced. Seamless replacement of the filter screen, stepped recovery of waste heat and utilization of kinetic energy of flue gas in the flue gas treatment process are achieved, the system operation efficiency and the energy utilization rate are remarkably improved, and pollutant emission is reduced.

The invention provides a biomass boiler environment-friendly treatment method based on ultralow-temperature flue gas denitration, and relates to the technical field of flue gas denitration, and the biomass boiler environment-friendly treatment method comprises the following steps: primarily filtering discharged flue gas, carrying out temperature authentication, and introducing the flue gas into a desulfurization reactor; collecting a temperature distribution diagram of the desulfurization reactor, and determining an infrared temperature distribution diagram sequence; carrying out reaction region division to obtain a plurality of divided reaction regions; the nozzle spraying angles and the spraying quantities of the multiple reducing agent spraying guns are analyzed, and the multiple nozzle spraying angles and the multiple spraying quantities are determined; and injecting a reducing agent, and reacting the injected reducing agent with the flue gas under the catalysis of the ultralow-temperature SCR denitration catalyst to complete flue gas denitration. The technical problems that a traditional selective non-catalytic reduction technology and a selective catalytic reduction technology are difficult to adapt to the denitration requirement of the biomass boiler under the low-temperature condition, secondary heating is generally needed, the denitration efficiency is insufficient, the equipment cost is increased, and the environment-friendly emission requirement cannot be met are solved.

The invention discloses a monitoring optimization method and system for a vibration grate of a biomass boiler. The method comprises the steps that sensors are arranged in a biomass boiler system, pollutant concentration, temperature and pressure parameters in flue gas are monitored in real time, then collected data are utilized to form a desulfurization facility data curve, an optimization algorithm model is established, and finally, according to output of the optimization algorithm model, the desulfurization facility data curve is calculated. And the intelligent control system automatically adjusts the operation parameters of the desulfurization and dust removal equipment so as to maximize the desulfurization efficiency. The method realizes automation and intelligentization of the desulfurization and dust removal process, effectively reduces environmental pollution, and improves the energy utilization efficiency.

The invention relates to the technical field of automatic welding, and particularly discloses biomass boiler assembly machining and welding equipment which comprises moving equipment, the moving equipment is used for driving a to-be-welded part to be close to the welding position of a boiler, and an adsorption plate used for adsorbing the part is rotationally mounted on the moving equipment; a first driving piece for driving the adsorption plate to rotate to adjust the angle of the part is mounted on one side of the adsorption plate; a laser welding head is rotationally mounted on one side of the mobile equipment through a rotating disc, the rotating disc rotates through a second driving part, a first telescopic device used for enabling the laser welding head to be close to or away from the central axis of the rotating disc is connected between the laser welding head and the rotating disc, and the laser welding head is aligned to the to-be-welded contour of the part and the boiler; the laser welding head is driven by the rotating disc to form an annular welding path, the welding smoothness and speed can be improved, and the problem that heat input per unit area is remarkably increased is solved through continuous output of the protective gas.

The utility model discloses a biomass gas combustion system capable of accurately controlling combustion. The system comprises a biomass gas burner, a biomass gas pipeline connected with the burner, an air blower, an air supply pipeline connected with the air blower and the burner, a tar collecting device in a hearth of the biomass boiler, an oxygen sensor arranged on a smoke exhaust pipeline of the boiler, a controller based on a PLC (Programmable Logic Controller) system, and an air blower frequency converter. Gas component, flow, temperature and pressure measuring devices are arranged on the biomass gas pipeline, and flow and temperature measuring devices are arranged on the air supply pipeline. The controller calculates the oxygen amount needed by biomass gas combustion and the oxygen amount provided by the air blower according to data fed back by the measuring device, and controls the air blower frequency converter to adjust the air amount of the air blower under correction of data fed back by the oxygen sensor on the boiler smoke exhaust pipeline, so that combustion is accurately controlled under the condition of partial load of the boiler, and the combustion efficiency is improved. The combustion efficiency is improved, and the pollutant emission is reduced.

The invention relates to the technical field of environmental protection, and discloses a biomass boiler oxygen-enriched combustion and biomass fly ash potassium extraction method which comprises the following steps: step 1, high-carbon-dioxide-concentration flue gas generated after biomass is subjected to oxygen-enriched combustion in a boiler is cooled, fly ash is separated, the flue gas enters a flue gas heat exchanger, and low-temperature flue gas and hot air are obtained after heat exchange with cold air; 2, fly ash obtained through separation and water are mixed and stirred, a water-ash mixture is obtained, CO2 is introduced into the water-ash mixture, and the ash mixture and low-temperature flue gas are subjected to a contact reaction; step 3, performing solid-liquid separation on the water-ash mixture after the reaction to obtain a potassium-rich solution A and a filter residue A, dividing the solution A into a solution B and a solution C, returning the solution B to the contact reaction tank for circulation, and enabling the solution C to enter a concentration device; 4, heating and concentrating the solution C through hot air to obtain a solution D; and 5, carrying out solid-liquid separation on the solution D to obtain potassium salt and mother liquor F. The method is simple in process, low in extraction cost and high in product purity.

The utility model provides a biomass boiler flue gas temperature control device which comprises a boiler smoke exhaust pipe, a mounting plate, a temperature adjusting structure, a temperature detection area, an upper end extension pipe and a flue gas exhaust port, and the mounting plate is fixedly mounted at the lower end of the boiler smoke exhaust pipe and connected to a biomass boiler; the temperature adjusting structure is fixedly installed at the upper end of a boiler smoke exhaust pipe, the temperature detection area is fixedly installed at the upper end of the temperature adjusting structure, and the upper end extension pipe is fixedly installed at the upper end of the temperature detection area. The flue gas exhaust port is fixedly mounted at the top of the upper end extension pipe; due to the arrangement of the temperature adjusting structure and the flue gas exhaust port, the temperature of exhausted flue gas can be rapidly detected, and the temperature of the flue gas can be rapidly reduced.

The invention relates to the technical field of boilers, in particular to a composite water-cooled wall for a biomass boiler and a manufacturing method thereof, the composite water-cooled wall comprises a water-cooled wall main body, and is characterized in that the water-cooled wall main body is formed by combining an upper water-cooled section, a middle water-cooled section and a lower water-cooled section; each of the upper water-cooling section, the middle water-cooling section and the lower water-cooling section comprises a light pipe, a sealing plate, a heat-resistant scratch nail, a nano-porous refractory castable, a reinforcing rib plate and a phase-change heat-insulating layer, and the light pipes, the heat-resistant scratch nails and the nano-porous refractory castable are combined to form a water-cooling wall component; the stability of the wall surface structure can be improved by pouring the refractory castable in the membrane wall, and wall surface cracks or other mechanical damages caused by temperature change due to instability of biomass fuel moisture are prevented; the nano-porous refractory castable has good heat conduction performance on the basis of good heat preservation performance, and heat generated in the boiler can be effectively transferred.

The invention discloses a biomass boiler denitration urea solution automatic preparation system, which comprises a stirring cylinder and a control device, the stirring cylinder comprises an inner cylinder and an outer cylinder which are coaxially distributed, the inner cylinder defines a preliminary mixing cavity, and a fine mixing cavity is defined between the inner cylinder and the outer cylinder; a water supply device and a urea input device are arranged at the top of the stirring barrel; a liquid discharge device is arranged at the bottom of the stirring barrel; a plurality of flow guide holes communicated with the primary mixing cavity and the fine mixing cavity are formed in the side wall of the inner cylinder; a driving impeller is fixedly arranged on the upper portion of the rotating shaft, at least one stirring paddle is fixedly arranged on the lower portion of the rotating shaft, a water spraying pipe is arranged on the upper portion of the inner wall of the inner cylinder, and the water spraying pipe is provided with a plurality of spraying heads spraying water towards the driving impeller; a backflow device is connected between the backflow opening and the water spraying pipe. By adopting a multi-stage mixing mode and utilizing reflux water to push and stir, the preparation efficiency and quality of the urea solution are remarkably improved.

The utility model discloses an energy-saving air inlet mechanism of a biomass boiler, which comprises an air inlet pipe, an air pressure sensor is used for detecting and sensing the quantity of air flowing through the air inlet pipe, the air pressure sensor feeds back the collected information to a controller, and the controller controls a driving motor in an adjusting assembly to rotate. The output shaft of the driving motor drives the gear to be meshed with the annular fluted disc, so that the annular fluted disc drives the rotating air disc to rotate, the air passing holes in the rotating air disc are staggered or overlapped with the air passing holes in the fixed air disc, and when the air passing holes in the rotating air disc are completely overlapped with the air passing holes in the fixed air disc, the air volume is maximum; the air quantity is minimum when the air passing holes in the rotating air disc and the air passing holes in the fixed air disc are completely staggered, the air quantity can be adjusted by adjusting the staggered and overlapped opening sizes of the air passing holes in the rotating air disc and the air passing holes in the fixed air disc, the situation that combustion of fuel in the biomass boiler is affected by too large or too small air quantity is avoided, and the biomass boiler has a certain energy-saving effect and is simple in structure and convenient to use. The practicability is high.

The application discloses a kind of ammonia-free denitration agent for biomass boiler and its preparation method, and preparation raw materials include, by mass percentage: oxidizing agent 13-18%, solubilizer 0.5-2%, dispersing agent 0.5-1%, absorbent 15-19%, activated carbon slurry 8-15%, and the balance is water.5, the incorporation of denitration agent can effectively reduce the monitored values of nitrogen oxides at the inlet and outlet of flue gas, whether mother liquor or diluted product has the effect of reducing nitrogen oxides, the use method is simple, low in cost, convenient to use, has greater economic value and broad application prospect.

The utility model discloses a biomass boiler hearth ash filtering device, which relates to the field of biomass boilers, and comprises a box body, a heat conducting plate is arranged in the box body, the heat conducting plate divides the interior of the box body into a heat storage cavity and a flue, two ends of the flue are provided with flue gas ports, and the flue gas ports are communicated with the heat storage cavity. A first ash filtering assembly, a second ash filtering assembly and a third ash filtering assembly are arranged at the front end, the middle end and the rear end of the flue correspondingly. The n-shaped heat conduction plate is arranged in the box body, the box body is divided into the heat storage cavity and the flue, and the first ash filtering assembly, the second ash filtering assembly and the third ash filtering assembly in the flue filter particles in flue gas in a layered mode. The filtered particles are respectively deposited in the first ash filtering assembly, the second ash filtering assembly and the third ash filtering assembly, so that the situation that a large amount of flue gas particles are deposited in an independent ash filtering device, and the flue gas is not smoothly filtered is avoided.