253 results about "Circulating fluidized bed boiler" patented technology

The invention discloses a circulating fluidized bed boiler water supply optimization method and system, and belongs to the technical field of boiler energy conservation. The system mainly comprises a condensate water tank, a demineralized water tank, a slag cooler, a deoxygenization water tank, a condensate water pump, a demineralized water pump, a plate heat exchanger, a reverse osmosis membrane group, a demineralized water buffer tank and the like. The principle of'condensate water priority 'is adopted, the supply amount of condensate water is preferentially adjusted according to the liquid level of the deoxygenated water tank through the intelligent control unit, and the insufficient part is supplemented by demineralized water; the demineralized water subjected to heat exchange by the slag cooler is intelligently distributed to a demineralized water tank, a condensation water tank or a deoxygenization water tank according to the water outlet temperature; the plate heat exchanger can preheat reverse osmosis inlet water by adopting a desalting water mode or a steam mode; the demineralized water buffer tank effectively inhibits water impact. Dynamic balance and heat energy gradient utilization of steam condensate water and demineralized water are achieved, the problems of water tank overflow and energy waste are effectively solved, and the economical efficiency and stability of boiler operation are remarkably improved.

The application belongs to the technical field of refractory materials, and particularly relates to a corundum castable special for a circulating fluidized bed boiler and a preparation method thereof. The raw materials of the castable include 20-50 parts of white corundum particles with a size of 3-5 mm, 5-10 parts of alpha-alumina micropowder, 2-5 parts of microsilica, 1-5 parts of a binder, 0.5-1 part of a water reducing agent, and 1-5 parts of SiC-ZrB2 / chitosan quaternary ammonium salt modified graphene composite material. The castable has the properties of low apparent porosity, good mechanical properties, strong corrosion resistance and the like.

The invention provides an air cap anti-backflow device for a circulating fluidized bed boiler, belongs to the technical field of boiler combustion air distribution structures, and can at least partially solve the problems of low plugging efficiency, difficulty in ensuring coverage rate and poor sealing effect when an existing air cap is temporarily and physically plugged, or difficulty in sealing due to adoption of an inclined hole and increase of orifice resistance. In order to solve the problems that slag leakage speed and amount are reduced to a certain extent, and backward flowing cannot be fundamentally blocked, the air cap comprises an air cap body and a plugging assembly, the plugging assembly comprises a valve seat, a valve element and an elastic piece, the plugging assembly is arranged in each air outlet hole of the air cap body, and by means of mutual restriction of primary air pressure and elastic pre-tightening force, the air outlet holes of the air cap body can be effectively blocked. The valve element is automatically opened under the action of primary air pressure when the boiler normally operates and is automatically closed under the action of the elastic piece when the boiler is shut down or the primary air pressure is reduced to be lower than the preset opening pressure, active prevention of bed material backward flowing at the moment of boiler shut down is achieved, and the risk of serious dust accumulation and blockage of an air chamber is eliminated.

The embodiment of the invention discloses a solid waste bottom slag waste heat utilization circulating fluidized bed boiler system which comprises a boiler body and an air-water slag cooler, the boiler body is provided with a discharge port and an air return port, the discharge port is used for discharging high-temperature bottom slag outwards, the air return port is used for conveying air into the boiler body, and the air-water slag cooler is used for cooling the air-water slag cooler. The air-water slag cooler comprises a shell and an economizer, the shell communicates with the discharge outlet so as to be used for receiving high-temperature bottom slag discharged from the boiler body, and the shell is provided with an air inlet so as to be used for conveying air into the shell; the economizer is arranged in the shell and used for recycling flue gas waste heat emitted by the high-temperature bottom slag and can convert air conveyed into the shell into hot air, and the hot air converted by the economizer can be circularly conveyed into the boiler body through the air return opening. According to the circulating fluidized bed boiler system utilizing the waste heat of the solid waste bottom slag, waste of heat energy is reduced by recycling the waste heat of the high-temperature bottom slag, and the overall heat efficiency of the boiler is improved.

The cyclone separation device of the circulating fluidized bed boiler comprises a separator body, a filter screen, a cleaning mechanism and a rotating mechanism, an air outlet pipe is arranged at the top of the separator body, the filter screen is connected into the air outlet pipe in a penetrating mode, the cleaning mechanism comprises a cleaning brush arranged at the bottom of the filter screen, and a rotating plate is arranged at the bottom of the cleaning brush. The rotating mechanism is used for rotating the cleaning brush; the cleaning brush is used for cleaning the filter screen; the rotating mechanism comprises a rotating shaft and a rotating motor. The rotating shaft is fixedly connected to the top of the rotating plate. Through the design of the filter screen, the cleaning brush, the rotating plate and the rotating mechanism, the arranged filter screen is annular and is fixedly connected into the air outlet pipe in a penetrating and inserting mode, the filter screen is used for blocking objects carried in wind and reducing discharged objects in the using process, and when the objects carried in the wind block the filter screen, the cleaning brush is used for cleaning the filter screen. And the rotating mechanism drives the rotating plate and the cleaning brush to clean the filter screen, so that the condition that gas cannot penetrate through the filter screen is avoided.

The application belongs to the technical field of electric digital data processing, and particularly relates to a circulating fluidized bed boiler nitrogen oxide control optimization operation method and system. The circulating fluidized bed boiler nitrogen oxide control optimization operation method comprises the following steps: obtaining particle formation of a particle swarm based on a particle swarm algorithm; calculating the fitness of each particle according to a target function; obtaining a historical best cost vector and a population minimum cost vector; calculating the position vector and the velocity vector of the particle after iteration; obtaining the operation parameters and the cost of the corresponding circulating fluidized bed boiler and denitration device according to the position vector of the particle after iteration, and setting the operation parameters. The application automatically finds the optimal operation parameters of the circulating fluidized bed boiler and the denitration device through the particle swarm algorithm, fully considers the coupling effect of boiler combustion and tail denitration in the calculation, and can reduce the coal consumption of the circulating fluidized bed boiler and the consumption of the denitration agent under the given load and the demand of nitrogen oxide emission concentration, so as to minimize the operation cost.

The utility model provides an anti-falling structure for a partition wall of a boiler return feeder, which relates to the technical field of circulating fluidized bed boilers and comprises a boiler wall, a hexsteel, an anchor rod, a first connecting component and a second connecting component. According to the anti-falling structure for the partition wall of the boiler return feeder, the spliced hexsteel integrally covers the boiler wall, and the anchor rod penetrates through the center holes of the semicircular cylinder I and the semicircular cylinder II. And the threaded connecting cylinders are sequentially screwed into the first threaded cylinder and the second threaded cylinder and gradually tightened until the deep positions in the threaded connecting cylinders are matched with threads on the outer side of the end of the anchor rod, the hexsteel is prevented from being disengaged in the axis direction of the anchor rod, the hexsteel is tightly attached to the surface of the furnace wall, and no loosening gap exists between the meshes. The surface of the hexsteel is coated with the refractory material, the polygonal holes and the protrusions which are densely distributed on the surface of the hexsteel form abundant gap intervals, the polygonal holes and the protrusions are integrated through the physical embedding effect, and the refractory material is effectively prevented from being layered or falling off due to thermal expansion and cold contraction, material scouring and the like.

The utility model provides a pulverized coal pyrolysis, circulating fluidized bed boiler and gasification furnace integrated device which comprises a pyrolysis unit, a heat carrier heating unit, a powder selecting unit, a circulating fluidized bed boiler unit and a gasification unit, a solid phase outlet of the pyrolysis unit is independently connected with the heat carrier heating unit and the powder selecting unit, and a solid phase outlet of the gasification unit is independently connected with the circulating fluidized bed boiler unit. A smoke outlet pipeline of the heat carrier heating unit is connected with the powder selecting unit and the circulating fluidized bed boiler unit, an upper outlet of the powder selecting unit is connected with the gasification unit, and a lower outlet of the powder selecting unit is connected with the circulating fluidized bed boiler unit. According to the utility model, the particle size of the coke breeze after pulverized coal pyrolysis is graded, the graded coke breeze with smaller particle size is used for gasification, and the coke breeze with larger particle size is used as the fuel of the circulating fluidized bed boiler, so as to meet the requirements of different devices on the particle size of the coke breeze, effectively improve the utilization rate of the coke breeze, maximally utilize sensible heat of the coke breeze and realize efficient recycling of energy; and the treatment cost of downstream coke breeze processing is reduced, and efficient graded and quality-divided utilization of coke breeze is truly realized.

The application discloses a wind distribution device for a circulating fluidized bed boiler, which comprises a wind chamber, a wind distribution part, an adjustable baffle and a driving device. The wind chamber comprises a wind distribution area and a wind guide area, the wind distribution area is arranged above the wind guide area, and the wind distribution area is in communication with the wind guide area. The wind distribution part is arranged on the top of the wind distribution area. The adjustable baffle is rotatably connected to the top of the wind guide area. The driving device is connected to the adjustable baffle and drives the adjustable baffle to rotate so as to adjust the wind volume entering the wind distribution area. The air inlet is arranged on at least one side of the wind guide area. Thus, the wind volume entering each area of the furnace of the circulating fluidized bed boiler can be quantitatively controlled by arranging the adjustable baffle on the device, and the fluidization state of the bed material in each area can be differentially adjusted, so that the operation problems, such as poor fluidization of the bed material, high local bed temperature, coking and partial bed, are solved. Meanwhile, the device has the advantages of simple operation and low installation and maintenance cost.

The invention discloses an SNCR (selective non-catalytic reduction) denitration agent reduction method for a large-scale circulating fluidized bed boiler, which comprises the following steps of: adjusting primary and secondary air rates, adjusting upper and lower secondary air and adjusting flue gas recirculation in the operation process of the large-scale circulating fluidized bed boiler in a boiler starting period, a load increasing period, a load stabilizing period and a load reducing period; and the average oxygen content of the boiler is controlled to be 2.5-3.5%, and the single-point oxygen content is not allowed to be lower than 2%. And the original emission of boiler nitrogen oxide indexes is reduced, so that the input amount of the required denitration agent is reduced.

The invention provides an optimized circulating fluidized bed boiler flue gas denitration system, which belongs to the technical field of flue gas denitration, and comprises a boiler, a cyclone separator group, a preheater, a dust remover, an induced draft fan, a chimney, a material returning device, an air chamber, an injection system and a flue gas recirculation device, the cyclone separator group comprises a plurality of cyclone separators; the injection system comprises a static mixer, a first spray gun group and a second spray gun group; and the flue gas recirculation device comprises a recirculation fan and a primary fan. Based on the difference between the inlet and the outlet of the cyclone separator, the ultra-low emission requirement is met through SNCR (selective non-catalytic reduction) dynamic partition injection, flue gas recirculation variable load self-adaption and coal quality-denitration advanced linkage; the problem of NOx fluctuation under variable load and variable coal quality is solved.

The utility model relates to the technical field of admixture preparation devices, in particular to slurry mineral admixture production equipment which comprises an emission collecting and processing unit, a flue gas desulfurization unit and a mineral admixture production unit which are sequentially connected in series, a desulfurizer slurry production unit is connected between the emission collection and treatment unit and the mineral admixture production unit, and the emission collection and treatment unit is in communication connection with the mineral admixture production unit; the desulfurizer slurry production unit is connected with the flue gas desulfurization unit; according to the slurry mineral admixture production equipment, available raw materials and emissions of a circulating fluidized bed power plant can be utilized, fly ash, furnace slag and desulfurization products are used as main raw materials, and a series of problems that emissions of a traditional circulating fluidized bed power plant need to be treated independently and the like are solved; solid waste emission of a power plant is reduced, the utilization rate of emissions of the circulating fluidized bed boiler power plant is increased, and a mineral admixture can be prepared.

The invention belongs to the technical field of electrical digital data processing, and particularly relates to a circulating fluidized bed boiler nitrogen oxide control optimization operation method and system.The circulating fluidized bed boiler nitrogen oxide control optimization operation method comprises the steps that based on a particle swarm algorithm, particles are obtained to form a particle swarm; calculating the fitness of each particle according to the target function; obtaining a historical optimal cost vector and a population minimum cost vector; calculating a position vector and a velocity vector of the particles after iteration; according to the position vectors of the particles after iteration, obtaining operation parameters and costs of the corresponding circulating fluidized bed boiler and the denitration device, and setting the operation parameters; according to the method, the optimal operation parameters of the circulating fluidized bed boiler and the denitration device are automatically searched through the particle swarm optimization, meanwhile, the effect of boiler combustion and tail denitration coupling is fully considered in calculation, the coal consumption of the circulating fluidized bed boiler and the consumption of the denitration agent can be reduced under the requirements of given load and nitrogen oxide emission concentration, and the system reliability is improved. And the operation cost is lowest.

The application discloses a circulating fluidized bed boiler secondary air control method and system based on coal quality characteristics, relates to the technical field of automatic control, solves the technical problem that the existing manual control secondary air strategy makes it difficult to adjust the secondary air and match the secondary air with the furnace environment in time, and further causes the low efficiency of secondary air regulation, and comprises the following steps: acquiring industrial data of a fluidized bed boiler, constructing a digital twin model of the fluidized bed boiler based on the industrial data; acquiring coal quality data and furnace data of the coal to be added; inputting the coal quality data and the furnace data into the digital twin model to obtain corresponding simulated furnace data; generating a secondary air control scheme based on the simulated furnace data; regulating and controlling the fluidized bed boiler based on the secondary air control scheme; acquiring real-time furnace data, generating a secondary air adjustment scheme based on the real-time furnace data; and regulating and controlling the fluidized bed boiler based on the secondary air adjustment scheme; and the overall operation efficiency of the boiler is improved.

The invention relates to a sludge incineration treatment system, and belongs to the field of sludge treatment. Comprising a sludge feeding system, an incineration system, an ash delivery system and an ash circulation system. By means of the double-sleeve type ash feeding pipeline, the air feeding quality can be improved, the problem that the rear section of a traditional air feeding system is small in pressure and prone to blockage is solved, high-pressure blowing is matched, and the stability of a sludge feeding system is guaranteed. A wear-resistant protective sleeve is additionally arranged at the elbow of the ash conveying pipeline, so that normal operation of equipment is ensured. The sleeve type high-temperature protection pipe is additionally designed, so that the problem of pipeline breakage caused by thermal expansion is completely eradicated; through the design structure of the valve, the flashboard is prevented from being clamped due to the fact that ash residues are accumulated in the supporting plate or gaps. By designing a cooling water line of the cooler, the steam heat efficiency of the circulating fluidized bed boiler is ensured. And an ash circulating system is additionally arranged, carbon particles which are not completely combusted in ash are fed into the hearth again, and the fuel utilization rate is increased.

The utility model discloses equipment for optimizing the efficiency of a circulating fluidized bed boiler. The boiler comprises a boiler body, the top of the boiler body communicates with a smoke exhaust pipe, a water tower is arranged on the right side of the boiler body, heating mechanisms are fixedly connected to the front end and the back end of the inner wall of the water tower correspondingly, and each heating mechanism comprises a shell, a square pipe, a guide pipe, a water pump, a discharge pipe, a support, a booster fan and a cross pipe. The front end and the back end of the inner wall of the water tower are fixedly connected with shells, and the inner sides of the shells are fixedly connected with square pipes. Through the arrangement of the heating mechanism, steam can enter the smoke exhaust pipe, the smoke exhaust pipe is guided into the square pipe, the square pipe guides the steam to be circularly and downwards conveyed into the guiding pipe, the steam heats the square pipe for the residence time in the square pipe, the square pipe heats cold water in the water tower, the cold water is heated to be heated, and the temperature of the cold water is increased. And the working efficiency is improved by utilizing flue gas waste heat of the boiler body.

The utility model relates to an integrated circulating fluidized bed boiler. The integrated circulating fluidized bed boiler comprises a feeding device, a hearth, an air chamber, a material returning device, a hot water boiler drum, a separating device, a horizontal flue, a steam boiler drum, a tail flue, a steam outlet header, an SCR device, an air pre-heater, a smoke outlet, a connecting flue, a hot water boiler heating surface and a steam boiler heating surface. According to the integrated circulating fluidized bed boiler, the heating surface required by the hot water boiler and the heating surface required by the steam boiler are integrated and arranged in the integrated circulating fluidized bed boiler, and the integrated circulating fluidized bed boiler can generate superheated steam while producing hot water. Hot water generated by the boiler is externally supplied to users, and generated superheated steam can be used for driving an industrial steam turbine so as to drive a high-power water pump motor and a fan motor arranged on the boiler. According to the utility model, the total power consumption of a heat source plant can be greatly reduced, and the backpressure steam exhausted by the industrial steam turbine can be completely used for heat supply, so that the system has obvious economic benefits.

The utility model discloses a circulating fluidized bed boiler installation suspension structure, which relates to the related technical field of lifting appliances and comprises a lifting plate, lifting hooks, a driving mechanism and a clamping mechanism, the top end of the lifting plate is fixedly connected with a lifting ring through a steel cable, the lifting hooks are fixedly connected to the bottom end of the lifting plate at equal intervals through the steel cable, and the driving mechanism is arranged on the lifting plate. The clamping mechanism moves through the driving mechanism and is used for stabilizing the boiler component lifted by the lifting hook. According to the utility model, the arrangement mode that the driving mechanism is matched with the clamping mechanism is utilized, and the clamping mechanisms in different shapes can be replaced for clamping, so that long-barrel-shaped and cuboid-shaped boiler parts can be accurately attached to the contours of the parts, the parts are prevented from sliding or being damaged in the hoisting process, and the hoisting efficiency is improved. And due to the adjusting function of the driving mechanism, the clamping mechanism can be quickly and accurately positioned to the required clamping position, and a powerful guarantee is provided for efficient installation of the circulating fluidized bed boiler.

The invention relates to a circulating fluidized bed boiler (10) comprising a vertically extending furnace (12), a separator unit (14), and an exhaust gas channel (18) connected to the separator unit (14) via a cross pipe (24), the exhaust gas channel comprising a first vertically extending passageway (18.1) and a horizontally extending passageway (18.2) and a second vertically extending passageway (18.3). The first vertically extending passageway (18.1) and the horizontally extending passageway (18.2) and the second vertically extending passageway (18.3) are arranged successively in the gas flow direction, such that the horizontally extending passageway (18.2) is configured to connect the first vertically extending passageway (18.1) and the second vertically extending passageway (18.3) to each other, and the horizontally extending passageway (18.2) is arranged below the separator unit (14), which is arranged between the first vertically extending passageway (18.1) and the second vertically extending passageway (18.3).

1. Product name of this design: Anti-wear mesh for circulating fluidized bed boiler (compound nine-square grid type). 2. Application of this design: This design is used on the surface of the heating tube bank inside the furnace of a circulating fluidized bed boiler to form protection for the tube bank in the covered area. 3. The key design features of this product are its shape. 4. The picture or photograph that best illustrates the key design features of this design: perspective view 1.

The invention relates to the technical field of peak regulation of thermal power generation equipment, in particular to a wide-load adaptive system for deep peak regulation feed water temperature of a large circulating fluidized bed boiler. Comprising a water supply main pipeline, a multi-source heat exchange unit (a low-pressure economizer, an auxiliary electric heater and a waste heat exchanger), a parameter acquisition unit (a temperature sensor, a load sensor, a bed temperature sensor and a pressure sensor), a self-adaptive control unit (a fuzzy PID + load prediction algorithm) and a redundancy execution unit. The self-adaptive control unit dynamically dispatches the heat exchange priority of the multi-source heat exchange unit according to the boiler load change trend acquired by the parameter acquisition unit (high load preferentially utilizes waste heat / low-pressure coal economizer and low load starts auxiliary electric heating), fault seamless switching is achieved in combination with the redundancy execution unit, and meanwhile the self-adaptive control unit has the coking early warning function. According to the system, the feed water temperature can be accurately controlled at + / -2 DEG C under the load of 30%-100%, the energy consumption is reduced by more than 15%, the fault-free operation time is prolonged by 30%, and the boiler peak regulation reliability and economical efficiency are effectively improved.

The application discloses a kind of based on circulating fluidized bed's adsorption combustion integrated system and method, the system includes adsorption device, transport device, storage device and circulating fluidized bed boiler, the adsorption device includes air inlet subassembly and adsorption subassembly, the air inlet subassembly is used to the VOCs into the adsorption subassembly, the adsorption subassembly is multiple, multiple the adsorption subassembly is sequentially communicated and adjacent two the adsorption subassembly is detachably connected, the adsorption subassembly has adsorption cavity, the adsorption cavity is filled with the adsorbent of purifying VOCs, the transport device is used to the adsorbent in the adsorption subassembly is transported to the storage device, the storage device is the circulating fluidized bed boiler and provides the adsorbent to as the fuel of the circulating fluidized bed boiler.The application embodiment based on circulating fluidized bed's adsorption combustion integrated system has the advantages of low cost, simple structure and high efficiency of processing VOCs.

The invention discloses a temperature monitoring and adjusting method and device for a secondary air pipe of a circulating fluidized bed boiler, and belongs to the technical field of boiler operation monitoring and automatic control. A distributed optical fiber temperature measurement system is adopted to arrange temperature measurement optical fibers in a thermal stress concentration area of a secondary air branch pipe, and multi-point continuous temperature monitoring is achieved in the mode that a fixing block is welded and fixed to an air path branch pipe; filtering the collected temperature data to obtain undisturbed temperature data and store a historical reference value; executing three-level early warning logic judgment based on the dynamic temperature difference threshold range, and generating corresponding early warning signals when the average temperature difference between the monitored temperature and the reference value is in different threshold intervals; temperature field distribution and early warning states of all branch pipes are displayed in real time through an upper computer interface, an operator is guided to adjust the frequency of a secondary fan and the opening degree of an air door baffle according to the early warning level, and therefore the secondary air volume and air pressure are changed. Real-time accurate monitoring and active adjustment of the temperature of the secondary air pipe are achieved, and the running safety and stability of a unit under medium and low loads are improved.

The invention provides a movable bed material pneumatic conveying system and method for a circulating fluidized bed boiler, belongs to the technical field of boiler material conveying equipment, and can at least partially solve the problems that an existing bed material laying technology highly depends on a large amount of manual operation and is low in efficiency and high in safety risk; in order to solve the problems that the existing fuel conveying or lifting system needs to be subjected to large-scale fixed transformation, the investment is large, the transformation condition is harsh, and the equipment is difficult to flexibly share among multiple boilers, the invention discloses a multi-boiler fuel conveying or lifting system which comprises a material supply module, a pneumatic conveying module, a bed material distribution module and a movable traction module, the system can be used as a shared resource of a power plant, flexibly serves all boilers, even serves different factories, thoroughly breaks through the configuration mode of one boiler and one machine of a traditional fixed system, and is high in rate of return on investment.

The utility model discloses a supercritical circulating fluidized bed boiler, and relates to the technical field of boilers. The device comprises a combustion barrel, a cleaning mechanism and a filtering mechanism are arranged on the combustion barrel, an air inlet is formed in the outer wall of the combustion barrel in a communicated mode, the cleaning mechanism comprises an air outlet formed in the top of the combustion barrel in a communicated mode, a motor frame is fixedly connected to the inner wall of the air outlet, and a motor is fixedly connected to the inner wall of the motor frame. The filtering mechanism comprises a filtering plate fixedly connected to the inner wall of the air outlet, an output shaft of the motor is fixedly connected with a reciprocating lead screw through a coupler, and the reciprocating lead screw penetrates through the filtering plate. According to the utility model, by arranging the cleaning mechanism, the problems that the exhaust port is inconvenient to clean, impurities are attached for a long time and are extremely easy to chemically react with materials at the air outlet, so that the inner wall is seriously corroded, the materials at the air outlet are gradually thinned and damaged due to corrosion, and the structural strength of the air outlet is greatly weakened are solved.

The application discloses a kind of with load decoupling's coal circulating fluidized bed boiler bed temperature independent regulation method, solve the existing boiler bed temperature and boiler load coupling, cannot realize the problem of boiler bed temperature independent regulation and stability;With furnace differential pressure as the second PID2 regulator input value PV2 is set, the output value of second PID2 regulator is used as the control input signal of the variable frequency motor of boiler ash cooler discharge capacity, realize the adjustment of the circulating ash of the above two conditions, and the set value SP1 and measured value PV1 of bed temperature are used as the input value of first PID1 regulator, the output value of first PID regulator is used as the differential pressure set value SP2 of second PID2 regulator, through the coupling connection of first PID1 and second PID2, realize with bed temperature change as input, with the control input signal of the variable frequency motor of boiler ash cooler discharge capacity as execution unit, realize the stable regulation of boiler bed temperature and bed temperature and boiler load decoupling.

The utility model discloses a shock wave soot blowing equipment of promoting main steam temperature, including the spray pipe of being located on the inner wall of boiler, the end of spray pipe is equipped with the conical outlet, the inside of spray pipe is equipped with the lumen, the outside of conical outlet is equipped with the sealing plate for the plugging conical outlet, the inside of lumen is equipped with the spray head that can axial movement to the conical outlet and open the sealing plate, the one end of spray head is equipped with the nozzle to the conical outlet, another end of spray head communicates with the lumen. The utility model has can avoid the spray head is accumulated ash and is blocked, can clean up the accumulated ash fast and efficiently, reduces the cleaning difficulty, and then delays the accumulated ash and agglomerate of high low area, guarantees the convection heat exchange efficiency of high low area, makes circulating fluidized bed boiler main steam temperature keep in target temperature range etc.

The invention belongs to the technical field of electric digital data processing, and particularly relates to a combined desulfurization optimized operation method of a circulating fluidized bed boiler and a circulating fluidization system.The combined desulfurization optimized operation method of the circulating fluidized bed boiler comprises the steps that the fitness of each particle is calculated; obtaining a historical optimal cost vector and a population minimum cost vector; calculating position vectors of the particles after iteration; according to the position vectors of the particles after iteration, obtaining operation parameters of the corresponding circulating fluidized bed boiler, the input amount of lime in the boiler, the input amount of a tail desulfurizer and operation parameters of a denitration device; according to the method, the optimal solution of each parameter can be found through the particle swarm optimization, the effect of coupling in-boiler desulfurization, tail desulfurization and denitration of the boiler is fully considered in calculation, and meanwhile, the emission of sulfur dioxide and nitrogen oxide reaches the standard, and economic operation is achieved; and the requirement for continuous optimization of the combustion efficiency and nitrogen oxide control of the circulating fluidized bed boiler is met.

The invention relates to the technical field of circulating fluidized bed boilers, in particular to a circulating fluidized bed boiler temperature characterization data processing method and device and electronic equipment.The method comprises the steps that multi-channel temperature time sequence data synchronously collected by measuring points at different spatial positions are obtained; constructing a temperature time sequence data set according to the multi-channel temperature time sequence data, and performing signal smoothing processing on the temperature time sequence data of each measuring point in the temperature time sequence data set; extracting a temperature change characteristic sequence of the processed temperature time sequence data, determining an effective data interval of a corresponding measuring point according to the temperature change characteristic sequence, and determining propagation delay of temperature change between two corresponding measuring points according to the effective data interval of any two measuring points, and generating a propagation delay relationship between different spatial positions according to the propagation delay between any two measuring points. Therefore, the problem that the circulating fluidized bed boiler is difficult to effectively monitor the motion state of the circulating ash in the related technology is solved.

The invention relates to the technical field of boiler combustion, in particular to a slag spraying prevention control method and system for a circulating fluidized bed boiler, expansion generated when slag passes through a slag discharging pipe is eliminated through an expansion joint, and then the situation that the pipe wall of the slag discharging pipe is expanded and cracked due to heating expansion is avoided; steam generated in the steam box is conveyed through the steam conveying pipeline and finally conveyed into the boiler body, so that the interior of the boiler body can be rapidly cooled, the slag bonding amount in the boiler body is reduced, the slag bonding amount in the boiler body is reduced, and thermal expansion of the pipe wall of the slag discharging pipe is eliminated; therefore, the situation that slag spraying caused by thermal expansion of the slag discharging pipe affects safe operation of the boiler body and personal safety is avoided, and the situation that the boiler body is forcibly shut down is avoided.