1031 results about "Air preheater" patented technology

The present invention discloses a hot-end sealing device for an air preheater that compensates for the expansion difference between a sealing sheet and a backing plate, which at least includes a sealing sheet and a backing plate. The sealing sheet is provided with sealing sheet mounting holes distributed along the length direction, and the backing plate is provided with backing plate mounting holes distributed along the length direction. The linear expansion coefficient of the sealing sheet is different from that of the backing plate. The sealing sheet and the backing plate are relatively fixed by clamping bolts that simultaneously pass through the sealing sheet mounting holes and the backing plate mounting holes. One end close to the rotor central cylinder is the expansion starting end, and the clamping bolts at the expansion starting end are fully tightened and fixed, while the remaining clamping bolts are not fully tightened and fixed, so that the sealing sheet and the backing plate freely expand towards the other end close to the rotor outer edge angle steel after being heated. At least one set of two-dimensional guiding mechanisms is arranged between the sealing sheet and the backing plate downstream of the expansion starting end. The above device maximally compensates for the triangular air leakage area at the hot end of the air preheater, significantly reduces the air leakage rate of the air preheater, has good stability and a long service life.

The invention discloses an efficient pulsating heat pipe air pre-heater gas stove, and relates to the technical field of gas stoves. The air pre-heater comprises an air pre-heater body, a pulsating heat pipe and an air supply pipeline, the pulsating heat pipe is embedded in an inner cavity of the air pre-heater body, and the bottom of the air pre-heater body communicates with the top of the air supply pipeline; the air pre-heater body comprises a heat insulation radiation cavity and an air pre-heating cavity. The heat transfer efficiency of the pulsating heat pipe is far higher than that of traditional metal heat conduction, heat of high-temperature flue gas can be rapidly absorbed, waste heat loss is reduced, the heat efficiency is improved, secondary air is heated through the air preheater, the temperature of the secondary air is increased, the combustion temperature is increased, gas combustion is more sufficient, emission of carbon monoxide and nitric oxide is reduced, and the energy-saving and environment-friendly effects are achieved. The pulsating heat pipe has the unique advantages of being small and exquisite in structure, flexible in arrangement and efficient in heat transfer, and the heat efficiency of the gas stove is effectively improved through the L-shaped pulsating heat pipe heat insulation air pre-heater structure.

The invention discloses a shielding space operation communication gateway system based on PLC and 5G multimode fusion, and relates to the technical field of communication gateways, through integrating a task intention recognition module, a link semantic modeling module, an intelligent strategy regulation and control unit, a cross-link redundancy coding and decoding module, a link abnormal game detection module and a cognitive evolution management module; modeling is carried out through task-driven communication service requirements, semantic abstraction is carried out on a link state in combination with a graph neural network, a system constructs a double-input reinforcement learning model, and joint scheduling of link selection, coding configuration and energy consumption control is realized; meanwhile, the abnormal behavior of the link is judged through an adversarial sample recognition and game mechanism, and a main strategy structure is optimized based on a multi-strategy scoring and inheritance mechanism; the system has the capabilities of intelligent decision making of communication strategies, anomaly defense and self-evolution optimization, and is particularly suitable for high-reliability operation communication requirements in a limited space in wireless communication shielding environments such as a hearth, an air pre-heater, an absorption tower, a tunnel, a mine and a subway.

The invention discloses an air pre-heater cold end multi-fault diagnosis method and device based on a panorama and a dynamic intelligent model, and relates to the technical field of thermal power plant auxiliary engine fault diagnosis, and the method comprises the steps: constructing a panorama monitoring image of an air pre-heater rotor, and dividing the panorama monitoring image into a plurality of independent monitoring regions; extracting color channel information of each monitoring area, and dynamically updating a threshold range of each color channel based on a multi-trigger condition; obtaining morphological edge contour features and color channel deviation features, and jointly inputting the morphological edge contour features and the color channel deviation features into a pre-trained multi-fault classification model; the fault type recognition result, the confidence coefficient and the preset fault type weight are fused, the comprehensive degradation index of each monitoring area is calculated, a three-dimensional diagnosis result is output in combination with the spatial position information of the monitoring areas, and accurate positioning diagnosis, degradation trend quantification and multi-fault intelligent distinguishing of the cold end area of the air preheater are achieved. The method is suitable for full-life-cycle online monitoring and maintenance decision making of the rotary air pre-heater.

The invention discloses an intelligent control method and system for preventing blockage of an air preheater, and the method comprises the steps: determining the flue gas flow difference data of the front and rear sides of the air preheater, evaluating the blockage condition of the air preheater to obtain a blockage evaluation value, and setting the initial working condition of a blowing device according to the blockage evaluation value; acquiring flue gas temperature data and flue gas flow data of the front side of the air preheater, and determining a flue gas temperature coefficient and a flue gas flow coefficient through analysis; and a regulation and control coefficient is determined based on the flue gas temperature coefficient and the flue gas flow coefficient, and after the initial working condition of the air blowing device is adjusted, the air blowing device is controlled to conduct anti-blocking air blowing on the air preheater. By monitoring the flue gas flow difference data in real time, analyzing the flue gas temperature and flow data and combining an intelligent algorithm and a control strategy, intelligent anti-blocking control over the air preheater can be achieved in time, stable operation of equipment is ensured, the service life of the equipment is prolonged, the maintenance cost is reduced, and the production efficiency is improved.

The invention relates to the technical field of waste heat recovery, and particularly discloses an efficient waste heat recovery system based on secondary lead smelting and a cascade using method thereof.The efficient waste heat recovery system comprises a smelting furnace, an air preheater, a cyclone dust collector, a box type dust collector, a waste heat boiler and a raw material drying machine which are sequentially connected; a vertical cylinder with the lower end extending out is concentrically fixed to the top of the heat preservation outer shell, a heat exchange rotor is rotationally arranged at the upper end of the vertical cylinder, the interior of the heat exchange rotor is evenly divided into a plurality of sealed fan-shaped spaces, the fan-shaped spaces are filled with phase change heat storage materials, and a plurality of sets of vertical tubes are arranged in each fan-shaped space. A plurality of groups of radial through heat exchange tubes are arranged in each fan-shaped space; according to the waste heat efficient recovery system and the waste heat cascade using method, on the premise that high-temperature flue gas waste heat is efficiently utilized, corrosion of high-temperature strong acid gas to the heat exchange pipes and the heat exchange media can be avoided, and the service life of the air preheater is guaranteed.

The utility model discloses a boiler air pre-heater with a cleaning function, which comprises an air pre-heater body, the air pre-heater body comprises a tube box, a smoke tube bundle and a scraper device are arranged in a heat exchange cavity of the tube box, and the scraper device is used for scraping dirt on the outer side wall of each smoke tube in the smoke tube bundle; a smoke inlet pipe and a smoke exhaust pipe are arranged at the two ends of the pipe box respectively, the axis of a smoke inlet of the smoke inlet pipe and the axis of a smoke outlet are arranged in an angle mode, an extending pipe extending in the axial direction is arranged on the side, opposite to the smoke outlet, of the smoke inlet pipe and communicated with the smoke inlet pipe, and a scraping and washing device is arranged in the extending pipe. The scraping and washing device is used for scraping dirt on the inner side wall of each smoke tube in the smoke tube bundle; a valve control assembly is arranged at the joint of the extension pipe and the smoke inlet pipe. According to the smoke tube bundle cleaning device, dirt accumulated on the inner side wall and the outer side wall of each smoke tube in the smoke tube bundle is scraped away in a scraping and washing mode under the condition that disassembly is not needed, and therefore cleaning of the smoke tube bundle is achieved, heat exchange efficiency is improved, cost is reduced, and the service life is greatly prolonged.

The utility model discloses a heat exchange plate, belongs to the field of air preheaters, solves the problem that better heat exchange efficiency cannot be obtained when a plate sheet with higher hardness is used in the prior art, and mainly adopts the technical scheme that the heat exchange plate is formed by welding two thin plates which are arranged front and back through a plurality of linear welding parts, the non-welded parts on the two thin plates are far away from each other to form an air cavity for flowing air, the left side of the air cavity is an air inlet side, the right side of the air cavity is an air outlet side, and the linear welding part is in an up-and-down fluctuating wave shape. The heat exchange plate is mainly used for improving the heat exchange efficiency while ensuring the strength of the heat exchange plate.

The invention belongs to the field of heat-engine plant boiler flue gas waste heat recycling, and discloses a boiler waste heat recycling system which comprises an air preheater and a boiler, and a flue gas outlet of the boiler is communicated with a flue gas channel inlet of the air preheater through a pipeline; an outlet of an air channel of the air preheater communicates with a combustion-supporting air inlet of the boiler through a pipeline, and an inlet of the air channel is used for introducing air to be heated. The air preheater further comprises a preheating unit, the preheating unit comprises a compartment, and the compartment is arranged on the air side of the air preheater and located between the smoke channel and the air channel. The air inlet end and the air outlet end of the compartment are communicated through a circulating pipeline; the circulating fan is arranged on the circulating pipeline and is used for driving the gas in the compartment to circulate; according to the scheme, by means of the buffer area formed by the compartments and the circulating fan, the temperature shock amplitude of the heat accumulator in the alternate heat absorption and heat release process is reduced, and deformation of the heat accumulator caused by too large local thermal stress is relieved; the problem that the heat accumulator is heated unevenly is solved.

The utility model discloses an air preheater for a burner at the bottom of an ethylene cracking furnace, and relates to the field of ethylene cracking, the air preheater comprises an air preheater body and a connecting air duct, the air preheater body comprises a preheater shell, an air inlet and an air outlet are formed in the two ends of the preheater shell respectively, and a heat exchange tube bundle is arranged in the preheater shell; a heat source inlet and a heat source outlet are formed in the preheater shell and connected to the two ends of the heat exchange tube bundle correspondingly. The air outlet is connected to a combustor at the bottom of the cracking furnace through a connecting air duct; one air preheater body is matched with a plurality of cracking furnace bottom combustors. The cracking furnace solves the problem that the bottom space of the cracking furnace is limited, is suitable for limited space, saves occupied area and is high in heat exchange efficiency.

The invention discloses an energy-saving boiler, and relates to the technical field of boilers, the energy-saving boiler comprises a boiler body and a smoke exhaust pipeline mounted on the boiler body, the energy-saving boiler further comprises an air preheater mounted at the tail end of the smoke exhaust pipeline, and a pair of heat exchange pipe sets distributed in the smoke exhaust direction is mounted in the air preheater; the heat exchange tube set is composed of a plurality of heat exchange tube bundles, expanding parts and reducing parts which are alternately distributed along the axes of the heat exchange tube bundles are arranged on the heat exchange tube bundles, spiral flow deflectors and movable cleaning frames with upper and lower openings are arranged on the inner walls of the reducing parts, and the movable cleaning frames are movably installed in the heat exchange tube set and provided with through holes allowing the heat exchange tube bundles to penetrate through. Annular cleaning turbulent flow pieces corresponding to the heat exchange tube bundles are rotationally installed in the movable cleaning frame. By arranging the movable cleaning frame and a plurality of annular cleaning turbulent flow pieces in the movable cleaning frame, the outer wall of the heat exchange tube bundle can be continuously scraped in the moving process, and compared with a traditional soot blowing mode, the mechanical scraping mode is more thorough in soot cleaning.

The invention relates to the technical field of waste incineration flue gas treatment, and discloses a waste incineration flue gas purification and waste heat gradient utilization system. The waste incineration flue gas purification and waste heat gradient utilization system comprises a waste heat boiler, a circulating type dry deacidification reaction tower, a bag-type dust collector and a flue gas waste heat recovery heat exchanger which are arranged in sequence. The circulating dry deacidification reaction tower is sequentially provided with a bottom flue gas inlet, a middle feeding section and a top flue gas outlet from bottom to top; a flue gas outlet of the waste heat boiler is connected with a bottom flue gas inlet of the circulating dry deacidification reaction tower; a top flue gas outlet of the circulating dry deacidification reaction tower is connected with a flue gas inlet of the bag-type dust collector; a flue gas outlet of the bag-type dust collector is connected with a flue gas inlet of the flue gas waste heat recovery heat exchanger; and a shell-and-tube flue gas-air preheater is arranged at the tail end of the waste heat boiler. According to the system, flue gas purification and gradient utilization of waste heat can be achieved, and remarkable economic and environmental benefits are brought.

The utility model relates to a horizontal tubular air preheater with turbolators, which is characterized in that a first-stage air preheater and a second-stage air preheater are arranged in a frame, a plurality of turbolator heat exchange tubes are respectively arranged in the first-stage air preheater and the second-stage air preheater, flue gas sequentially and transversely scours the second-stage air preheater and the first-stage air preheater, and the turbolator heat exchange tubes are arranged in the first-stage air preheater and the second-stage air preheater. Flue gas and air flow in the countercurrent direction, the flue gas exchanges heat with the air in the turbolator heat exchange tubes, and a plurality of rows of guide plates are obliquely arranged at the top and the bottom of the frame respectively to prevent the flue gas from forming flue gas corridors on the upper side and the lower side. The turbulent flow is increased, so that the thickness of a retention bottom of main heat resistance of convective heat transfer is reduced, heat transfer is enhanced, and the heat transfer coefficient K is increased by 50% compared with that of a common tubular preheater.

The invention belongs to the technical field of boiler waste heat, gas and pressure utilization, and particularly relates to a lifting type intelligent soot blowing system and method for low-temperature area deposited soot, and the soot blowing system comprises a primary air pressurization soot blowing system, a vertical guide rail advancing soot blower and an intelligent control module. And the intelligent control module uses a blockage prediction intelligent algorithm and a dynamic soot blowing strategy. The primary air pressurization soot blowing system leads out part of dust-free primary air from an outlet of a boiler air pre-heater to serve as soot blowing primary air, and the dust-free primary air is conveyed to a lifting soot blower driven by a vertical guide rail after being pressurized to 0.5-0.8 MPa. The primary air pressurization soot blowing system is deeply coupled with the low-temperature economizer warm flue gas system, primary air is used as a soot blowing medium, the temperature of the soot blowing medium is about 320-350 DEG C, ammonium bisulfate condensate can be effectively dried and removed, and fly ash adhesion is reduced; and the soot blowing coverage rate reaches 100%, soot blowing according to needs is achieved, and the operation stability and economical efficiency of the unit are remarkably improved.

The invention relates to a method and a system for calculating air leakage of a three-section rotary air pre-heater. The method comprises the following steps: acquiring related data of primary air, secondary air and a flue gas bin; the air leakage amount of primary air and secondary air is calculated on line; wherein the air leakage amount of the primary air comprises the air leakage amount of the primary air leaking into the flue gas bin and the air leakage amount of the primary air leaking into the secondary air; the air leakage amount of the secondary air comprises the air leakage amount of the secondary air leaking into the flue gas bin; the average differential pressure among the primary air, the secondary air and the flue gas bin is calculated through a variable flow method; the average differential pressure corresponding to the primary air or the secondary air is changed, and the air leakage coefficient of the primary air leaking into the smoke bin, the air leakage coefficient of the primary air leaking into the secondary air and the air leakage coefficient of the secondary air leaking into the smoke bin are obtained; the temperature correction coefficients of the primary air and the secondary air are calculated through the temperature correction coefficients; the air leakage coefficient and the temperature correction coefficient are combined, and the corrected air leakage amount of the primary air leaking into the flue gas bin, the corrected air leakage amount of the primary air leaking into the secondary air and the corrected air leakage amount of the secondary air leaking into the flue gas bin are calculated.

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.

According to the online vacuumizing method and device for the heat pipe air pre-heater, the online vacuumizing method for the heat pipe air pre-heater is improved, on the premise that a cold source is not cut off, air exhaust operation is conducted on the heat pipe air pre-heater, and the phenomenon that when air exhaust operation is conducted on the heat pipe air pre-heater, the heat pipe air pre-heater is subjected to vacuum pumping operation is avoided. And normal operation of upstream and downstream equipment of the heat pipe air pre-heater is influenced. The heat pipe air pre-heater is applied to a boiler system, and the on-line vacuumizing method of the heat pipe air pre-heater comprises the steps that firstly, on the condition that the normal operation condition of the boiler system is kept, on-line air exhaust operation is conducted on a to-be-vacuumized pipe; and step SC, checking whether the vacuum degree of the to-be-vacuumized pipe is qualified or not, and if so, packaging the to-be-vacuumized pipe.

The invention relates to the field of air pre-heater sealing, and discloses an automatic compensation type sealing device of an air pre-heater. According to the novel sealing device, the rotor can deform along with the change of the internal temperature of the air pre-heater so that the stable sealing effect can be automatically kept at any time, and the novel sealing device is composed of a sealing component, a driving component, a driving gear component and a compensation gear component. The sealing part is installed on one side of a radial partition plate of the air pre-heater through a fastener, and movement allowance is reserved in a sealing part installation hole. When the air pre-heater works in a hot state, the automatic compensation type sealing device of the air pre-heater provides compensation amount which is effectively complementary with a triangular air leakage area, effective dynamic compensation is achieved, operation is stable, and the air leakage rate is remarkably reduced. The sealing device is simple and reliable in structure, convenient to install, capable of facilitating overhaul and maintenance of the air pre-heater, high in overhaul efficiency and low in maintenance cost.

The utility model discloses a phthalic anhydride preparation device with a preheater, which comprises an o-xylene storage tank, an o-xylene heater, a mixer, an oxidation reactor, a first phthalic anhydride catcher, a second phthalic anhydride catcher, a tail gas tower and a phthalic anhydride rectifying tower which are sequentially connected through a pipeline, a liquid adding pump is arranged between the o-xylene storage tank and the o-xylene heater; the phthalic anhydride preparation device with the preheater further comprises an air compressor and an air heater which are sequentially connected through a pipeline, the air heater is connected with the mixer through a pipeline, and the air preheater is further arranged between the air compressor and the air heater and comprises a body. A heating pipe fitting is arranged in the body, the heating pipe fitting comprises a heating pipe and spiral fins arranged around the heating pipe, by-product low-pressure steam of the oxidation reactor can be reasonably utilized by additionally arranging the air preheater, and the use amount of high-pressure steam is saved.

The present invention relates to a flexible sealing method for an air preheater. Flexible contact sealing devices (10) are installed at the upper, lower, left, and right sides of each straight pipe interface (1) of the air preheater, and boxed spring sealing devices (20) are installed at the adjacent positions of the four corners. A soft sealing layer (5) is filled in the adjacent side gaps between the boxed spring sealing devices (20) and the flexible contact sealing devices (10). Its installation includes seven steps. The flexible sealing method for an air preheater of the present invention has better sealing effect, convenient maintenance, and long service life.

The invention relates to a dual-mode air preheater flushing system which comprises an air preheater, the air preheater comprises a shell and a heat transfer element, the heat transfer element is rotationally arranged in the shell, and the dual-mode air preheater flushing system further comprises a state detection module, a flushing structure and an ash outlet; the flushing structure comprises an annular rail, a straight guide rail and a flushing pipe with a high-pressure bundling nozzle, the annular rail is arranged around the bottom surface of the heat transfer element, the flushing pipe realizes radial movement through a linear driving mechanism arranged on the straight guide rail, and the bottom of the straight guide rail is in sliding connection with the annular rail; the dual-mode air preheater flushing system integrates an operation flushing mode and a shutdown flushing mode. The state detection module switches flushing modes by monitoring the state of a mandrel of a heat transfer element, an ash outlet is formed in the bottom of the shell and provided with an ash discharging valve capable of being opened and closed, and coordination of dynamic flushing in operation and precise positioning deep flushing after shutdown can be achieved.

The invention discloses an air preheater intelligent control system and method based on thermal imaging and artificial intelligence, and relates to the technical field of air preheater monitoring control, and the method comprises the following steps: collecting thermal imaging image data of the outer surface of an air preheater in real time by using a thermal imager; thermal imaging image data are preprocessed, an artificial intelligence algorithm is used for extracting temperature distribution characteristics of the outer surface of the air preheater, whether leakage or temperature abnormity occurs in the air preheater is judged by comparing the temperature distribution characteristics with a temperature distribution model in a normal state, and if yes, a worker is reminded to handle in time through a sound-light alarm signal; the temperature parameter of the outer surface of the air preheater is calculated, and when the detected temperature parameter exceeds the normal temperature range, the air preheater is automatically flushed, and the opening degree of a flue baffle is adjusted to control the temperature. According to the invention, rapid detection and intelligent control of leakage and temperature abnormity of the preheater can be realized, and the operation reliability and stability of the air preheater are improved.

The embodiment of the invention provides a pulverized coal boiler induced draft fan flow measurement method and system.The method comprises the steps that the combustion smoke amount, the air leakage amount of an air pre-heater and the air leakage amount of a boiler body are obtained firstly, and the combustion smoke amount is obtained through calculation of operation parameters of a coal mill and a boiler; the air leakage amount of the air pre-heater is calculated according to the oxygen content of inlet flue gas and the oxygen content of outlet flue gas of the air pre-heater; the boiler body air leakage amount is obtained through calculation according to a boiler air leakage rate function obtained by fitting boiler historical data. And the total smoke flow is calculated according to the combustion smoke amount, the air leakage amount of the air pre-heater and the air leakage amount of the boiler body. By acquiring the equipment parameters of the induced draft fan and calculating the flow proportion of the induced draft fan according to the equipment parameters of the induced draft fan, the flue gas flow of the induced draft fan is output according to the flow proportion. According to the method, the flue gas flow can be calculated by measuring relatively accurate quantity, and the measurement precision can be improved, so that the problem of low accuracy of a flow parameter measurement result of the induced draft fan is solved.

The invention relates to a power station boiler flue gas recirculation system and method.The system comprises a multi-path flue gas extraction module, at least three flue gas extraction openings are formed in a boiler main flue and located at a low-temperature reheater outlet, a coal economizer outlet and an air pre-heater outlet correspondingly; the flue gas purifying and mixing module comprises a cyclone separator, a carbon powder adding box and a spiral flow guide mixer which are connected in sequence; the waste heat cascade recovery module comprises a high-temperature-section steam generator, a medium-temperature-section film type air preheater and a low-temperature-section three-dimensional finned tube heat exchanger; the intelligent regulation and control module comprises a sensor group, a distributed control system and an optimization algorithm unit, the sensor group collects smoke components, boiler loads and coal quality parameters in real time, and the optimization algorithm unit outputs cooperative instructions of the recirculation rate, the air-coal ratio and the over-fire air door opening degree. Therefore, the problems that in an existing power station boiler flue gas recirculation technology, the path is single, waste heat recovery is insufficient, regulation and control are lagged, and pollutant control separation is caused are solved.

The invention discloses an air pre-heater ash deposition online partition quantitative evaluation and ash removal decision method and system, and relates to the technical field of industrial artificial intelligence and machine learning, and the method comprises the steps: collecting multi-dimensional historical operation data covering all working conditions when an air pre-heater is in a reference clean state, and training and optimizing an initial health prediction model; performing real-time prediction through the initial health prediction model to obtain health reference data; automatically activating the initial health prediction model to autonomously evolve according to a preset triggering condition; and re-determining the health reference data through the health prediction model obtained through autonomous evolution. The problem of model drift is solved, and the long-term effectiveness of the diagnosis method is ensured. According to the invention, the manual maintenance cost is reduced, and the self-maintenance of the model is realized. And a complete intelligent closed loop of diagnosis, ash removal, model optimization and re-diagnosis is formed.

The invention provides a flue gas desulfurization and denitrification ultra-low emission DCS control system, belongs to the technical field of flue gas purification, and solves the technical problems that an existing desulfurization and denitrification DCS control system cannot realize deep synergy of desulfurization and denitrification and cannot perform ultra-low emission with accurate prediction and efficient response. The system comprises a boiler, an SCR denitration reactor connected with a flue gas outlet of the boiler, and an air pre-heater fixedly mounted at an outlet of the SCR denitration reactor, wherein an outlet of the air pre-heater is fixedly connected with a dust remover. According to the invention, through the arrangement of the data acquisition assembly and under the action of the collaborative optimization assembly, the system realizes an ammonia escape feedforward-compensation mechanism, the negative coupling between the denitration control unit and the desulfurization control unit is broken, the blockage of ammonium bisulfate is effectively prevented, the reliability of the desulfurization control unit is improved, and the service life of the desulfurization control unit is prolonged. Data acquisition, working condition identification, prediction and energy efficiency optimization are integrated on a unified DCS platform, and closed-loop intelligent control from sensing to decision making to execution is realized.

The present invention discloses a garbage power generation combustion device and process, in which a cyclone separator I is used to separate and purify the flue gas once after the grate furnace, and the separated solids enter the slag bin. The flue gas after the primary separation and purification enters the heat exchange flue gas duct for heat exchange, thereby fully utilizing the waste heat of the flue gas. In addition, the flue gas is directly used as the heat source of the air preheater in the heat exchange, and the waste heat is used to preheat the primary air and the secondary air, thereby improving the combustion quality and efficiency of the garbage. The flue gas after the heat exchange will be deacidified in the deacidification reaction tower, and after deacidification, it will be cyclone-separated again, and finally dusted in the dust collector, thereby improving the cleanliness of the flue gas.

The invention discloses a gas-steam combined cycle power generation system and method coupled with thermochemical energy storage. Comprising a Ca (OH) 2 / CaO system thermochemical energy storage system, a high-pressure natural gas conveying pipeline, a natural gas differential pressure power generation system, a gas turbine power generation system, a waste heat boiler, a frequency division fluid preheater, a steam turbine power generation system, a water supply preheater, a valve A, a valve B, a valve C, an air preheater and a valve D, the Ca (OH) 2 / CaO system thermochemical energy storage system comprises a reactor body and a steam pocket, the system and the method can deeply integrate thermochemical energy storage, solar full spectrum utilization and pressure energy recovery, and meanwhile, multi-energy coupling and dynamic peak regulation can be achieved.

The application discloses a regenerative air preheater. The regenerative air preheater comprises a left regenerative chamber, a right regenerative chamber, an eight-way air tank and an actuator. The eight-way air tank is cuboid and horizontally arranged. The left regenerative chamber and the right regenerative chamber are horizontally arranged on the left side and the right side of the eight-way air tank respectively, and the actuator is arranged at one end of the eight-way air tank. The eight-way air tank mainly comprises an air tank shell, an internal slider and a sealing ring. The left side and the right side of the air tank shell are respectively provided with four shell interfaces, the left surface and the right surface of the internal slider are respectively provided with eight slider interfaces, and the shell interfaces and the slider interfaces are sealed by the sealing ring. The actuator makes intermittent linear reciprocating motion to push and pull the internal slider, so that the material flow passes through different internal channels and enters different regenerative chambers to complete heat exchange. The regenerative air preheater can be stacked in multiple groups to form multiple small, medium and large regenerative air preheaters for selection.

This invention discloses a boiler load adaptive regulation system based on solid thermal storage, relating to the field of power plant boiler combustion technology. The invention includes a boiler with an economizer arranged in its tail flue, and a flue gas extraction pipe connecting the boiler and the economizer. The end of the flue gas extraction pipe is connected to an ash separation component, the outlet of which is connected to the flue gas inlet of a solid thermal storage component, and the flue gas outlet of the solid thermal storage component is connected to the air preheater inlet. This invention extracts high- and medium-temperature flue gas from different locations in the boiler during rapid load reduction, stores the heat from the high-temperature flue gas using solid thermal storage technology, and releases the heat from the solid thermal storage component when rapid load increase is needed. This heat is then used to increase the primary air temperature and pulverized coal temperature through a heat exchanger, enhancing the combustion intensity of pulverized coal in the furnace. By reducing the amount of high-temperature flue gas in the boiler, the load change rate of the unit is effectively improved.