718results about "Combustion technology mitigation" patented technology

The utility model discloses a bag-type dust collector with a cooling structure for waste gas treatment, which relates to the technical field of bag-type dust collectors and comprises a bag-type dust collector, a gas inlet of the bag-type dust collector is connected with a cooling box through a connecting pipeline, and the cooling box comprises a box body, a smoke inlet and a smoke outlet. The smoke inlet and the smoke outlet are fixed to the front end of the box body, the top of the smoke inlet is communicated with an inner cavity of the box body, the smoke outlet is connected with the connecting pipeline, a cooling assembly is arranged in the box body, and waste gas enters the box body through the smoke inlet and makes contact with the cooling assembly to achieve heat exchange and cooling. The cooling box and the cooling component are arranged, so that flue gas with overhigh temperature can be effectively prevented from directly entering the bag-type dust collector to damage a cloth bag in the bag-type dust collector, and the service life of the cloth bag of the bag-type dust collector 1 is further prolonged.

The present invention relates to the technical field of flue gas heat recovery. Particularly disclosed is a flue gas heat recycling structure for a combustion furnace, comprising: a flue dust filtering part, which comprises a flue dust pipe and a dust removal box connected to one end of the flue dust pipe, a filter screen mechanism used for filtering flue dust being mounted in the dust removal box; a flue gas high-temperature recycling part, comprising a water tank, a heat exchange assembly using the temperature of flue gas to heat a water source being mounted in the water tank; and an anti-acid dew part, mounted on the flue gas high-temperature recycling part and used for raising the temperature of flue gas and maintaining the temperature of outlet water. The flue dust filtering part of the present invention effectively cleans a filter screen in real time, so as to ensure the flue gas permeability of the filter screen, thus eliminating the need for manual cleaning and reducing maintenance costs. Meanwhile, cleaning actions are driven by the gas flow of flue gas, thus eliminating the need for extra energy consumption and achieving better practical effects. The anti-acid dew part uses part of high-temperature flue gas to raise the temperature of low-temperature flue gas, such that the discharge temperature thereof is higher than the condensation temperature of acid mist, thus avoiding generation of acid dew, and reducing damages to apparatuses caused by acid dew.

The utility model relates to a boiler flue gas waste heat recovery device which comprises a boiler flue gas waste heat recoverer, the boiler flue gas waste heat recoverer comprises a first tank body, a second tank body, a spiral water supply pipeline and a multi-ring-shaped water supply pipeline, the second tank body is installed in the first tank body, and the multi-ring-shaped water supply pipeline is installed in the second tank body. A cavity is formed between the second tank body and the first tank body, and the spiral water supply pipeline is mounted in the cavity; due to the design of the annular water supply pipelines and the spiral water supply pipelines, the retention time of high-temperature flue gas waste heat is prolonged, heat can be conveniently spread through the annular pipes or the spiral pipes, the heat exchange heating surface is increased, the contact area of flue gas and a heat exchange medium is large, sufficient heat exchange is conducted inside and outside the annular pipes or the spiral pipes, and the high-temperature flue gas waste heat recycling rate is high.

The utility model relates to the technical field of boiler air and smoke, in particular to a tubular heat exchanger and a boiler air and smoke system. Comprising two sets of connecting blocks, an air inlet pipe and a smoke inlet pipe are fixed to the surface of one set of connecting blocks, a smoke outlet pipe and an air outlet pipe are fixed to the surface of the other set of connecting blocks, an inner pipe is arranged on the inner wall of an outer pipe, and a filter plate is arranged on the inner wall of the end, close to the air inlet pipe, of the inner pipe. The spiral drainage blocks play a role in guiding high-temperature air smoke and cold air, the high-temperature air smoke is cooled more evenly, high-efficiency cooling of the high-temperature air smoke is achieved, meanwhile, the reinforcing blocks are fixed to the surfaces of the end openings of the outer pipe and the inner pipe and made of stainless steel, the heat exchange pipe is prevented from being corroded by low temperature, the filter plate is arranged on the air inlet, and therefore the heat exchange effect is improved. The inner pipe is prevented from being blocked by impurities doped in the cold air, so that the energy consumption of the blower is prevented from increasing.

The invention provides an optimal management method and system for a flue gas waste heat recovery and heat exchange system, and relates to the technical field of waste heat recovery and heat exchange management.The method comprises the steps that a flue gas characteristic parameter sequence within the recent preset time is obtained, and a first flue gas fluctuation coefficient is obtained through analysis; randomly setting the recovery medium flow of the recovery end, and performing preheating analysis in combination with the flue gas characteristic parameter sequence to obtain a preheating temperature sequence and an exhaust gas temperature sequence; according to the exhaust gas temperature sequence, carrying out recovery end pipeline corrosion and flue gas characteristic fluctuation analysis to obtain a second flue gas fluctuation coefficient; and according to the first flue gas fluctuation coefficient and the second flue gas fluctuation coefficient, the preheating temperature sequence and the exhaust gas temperature sequence are combined, the recovery medium flow is optimized, and the recovery medium flow is obtained to control flue gas waste heat recovery. The method solves the problems that waste heat recovery of a traditional heat exchange system mostly depends on fixed parameter control, smoke characteristic fluctuation is difficult to deal with, the waste heat recovery efficiency and the pipeline corrosion risk cannot be considered at the same time, the management effect of smoke waste heat recovery of the heat exchange system is optimized, and energy conservation and consumption reduction are achieved.

The utility model discloses a boiler economizer heat exchange pipeline anti-abrasion device which comprises a heat exchange pipe, a V-shaped anti-abrasion plate is installed on the top of the heat exchange pipe, a plurality of heat exchange fins are installed on the heat exchange pipe and located below the V-shaped anti-abrasion plate, a plurality of installation holes are formed in the V-shaped anti-abrasion plate, the boiler economizer heat exchange pipeline anti-abrasion device further comprises a clamping and blocking strip, an elastic buckle is installed at the bottom of the clamping and blocking strip, and the clamping and blocking strip is connected with the V-shaped anti-abrasion plate. And the elastic buckle is clamped in the mounting hole. The V-shaped anti-abrasion plate is additionally arranged at the top of the heat exchange tube, so that the top of the heat exchange tube is prevented from being impacted and abraded by flue gas and is prevented from being damaged; a plurality of blocking strips are mounted on the V-shaped anti-abrasion plate, so that dust is accumulated on the surface of the V-shaped anti-abrasion plate, the purpose of abrading materials by the materials is achieved, and the loss of the V-shaped anti-abrasion plate is reduced; the clamping strip is mounted at the mounting hole through the elastic buckle, and the inclined block in the elastic buckle is pushed out through the abutting block, so that after the clamping strip is damaged, the inclined block can continuously stop smoke, and the elastic buckle can be continuously pressed downwards to fall off to be replaced with a new clamping strip.

An efficient flue gas waste heat recovery device comprises a waste heat recovery assembly assembled with a flue gas outlet of an evaporator. The circulating pipe assembly is arranged on one side of the waste heat recovery assembly, the waste heat recovery assembly converts flue gas waste heat in the waste heat recovery assembly into available energy according to the heat exchange principle, and the preheating process of circulating water in the circulating pipe assembly is achieved; the waste heat recovery assembly comprises two supports and a plurality of barrels assembled between the two supports, two spiral flow guide plates are symmetrically distributed on the outer wall of a single transmission pipe, when a flue gas pipeline rotates, the two spiral flow guide plates can generate hedging vortexes of local areas in the corresponding barrels, the flow speed of circulating water is slowed down, and the heat exchange efficiency of the flue gas pipeline is improved. The process is performed synchronously as follows: the structural characteristic that the diameters of the transmission pipes are gradually reduced from the middle to the two ends enables the flue gas injected into the transmission pipes to decelerate step by step when passing through the middle parts of the plurality of transmission pipes, so that the contact time of the flue gas and circulating water is prolonged, and the heat conduction efficiency of the flue gas and the circulating water is improved.

The utility model relates to the technical field of boiler flue gas treatment, and discloses a boiler flue gas waste heat recovery device which comprises a bottom plate, a boiler body and a waste heat recovery mechanism, and the waste heat recovery mechanism comprises a heat collection box fixedly connected to the outer portion of a smoke outlet in the tail of the boiler body. According to the boiler flue gas waste heat recovery device, the multiple parallel metal fins are ingeniously installed at the tail smoke outlet of the boiler body, an efficient heat collecting face is formed, then the outer surface of the front half part of the spiral heat exchange pipe is fixedly connected to the inner walls of the metal fins, and therefore the heat collecting face is formed. The metal fins play a crucial role in the device, the capture efficiency of heat in flue gas is remarkably improved by increasing the contact surface area of the flue gas and metal, the main function of the spiral heat exchange pipe is to efficiently transfer the captured heat to flowing fluid, and the heat exchange efficiency is improved. The design optimizes the heat exchange performance of the whole device.

The invention relates to an expansion type boiler waste heat recovery system, and relates to the technical field of boiler waste heat recovery, the expansion type boiler waste heat recovery system comprises a multi-stage dust removal module, a flue gas desulfurization module, a heat exchanger module and a waste heat recovery assembly, the multi-stage dust removal module comprises an inner stainless steel pipe, and one end of the inner stainless steel pipe is fixedly connected with a flue gas inlet pipe through a flange. By arranging the inner stainless steel pipe, the outer stainless steel pipe and the aerogel layer between the inner stainless steel pipe and the outer stainless steel pipe and cooperating with the heat preservation layer in the fine filtering box, a multi-layer heat preservation structure is formed, heat loss of flue gas in the dust removal process is effectively reduced, and the flue gas temperature is guaranteed; meanwhile, a ceramic fiber layer in the Venturi pipeline and a heat preservation cotton layer on the inner side of the stainless steel sleeve can further isolate heat, it is ensured that flue gas is kept at a high temperature in the dust removal, desulfurization and heat exchange processes, good conditions are created for follow-up waste heat recovery, the waste heat recovery efficiency is improved, and the situation that the follow-up technological process is affected due to the too low temperature is avoided; and the equipment operation cost and energy consumption are reduced.

The invention relates to the technical field of waste heat utilization devices, and provides efficient waste heat recovery equipment which comprises a multi-layer composite heat exchange module, a thermal induction resonance self-cleaning module and a thermal medium switching module. The heat medium is used for receiving heat in the flue gas and transferring the heat to the internal flowing heat medium; the thermally-induced resonance self-cleaning module is attached to a waste gas emission channel of industrial flue gas, temperature control deformation is generated by sensing heat absorbed by the surface of the multi-layer composite heat exchange module, vibration is excited, and dust and particle impurities attached to the heat exchange surface are automatically shaken off and collected; the heat medium switching module is arranged in a heat exchange medium channel and automatically selects a heat transfer medium according to the heat source temperature, pressure and heat load characteristics so as to dynamically adjust the type, the flow speed and the circulation path of the heat medium and output heat energy to a rear-stage heat using end.

The utility model discloses a filtering device for flue gas waste heat recovery, which comprises a ventilation pipe, two ends of the ventilation pipe are respectively provided with an air inlet and an air outlet, a plurality of filter screens are detachably connected in the ventilation pipe along the length direction of the ventilation pipe, and a first rotating shaft is rotatably mounted on one side of each filter screen in the ventilation pipe. Knocking mechanisms are fixedly connected to the first rotating shafts, a gear motor is fixedly installed on the outer wall of the ventilation pipe through a support, the first rotating shafts are in transmission connection with an output shaft of the gear motor, and the bottom of the ventilation pipe is located on the side, facing the air inlet, of each filter screen and fixedly communicates with an ash hopper. According to the filtering device, after the filtering device is used for a period of time, the gear motor is started to drive the first rotating shafts to rotate, and the knocking mechanism can be driven to rotate, so that the filter screen is knocked by the knocking mechanism to shake off dust adhered to the filter screen, and the dust on the surface of the filter screen can be cleaned without taking out the filter screen; the manual maintenance period of the filter screen is greatly prolonged, and the use effect is good.

The invention provides a compound evaporator coupled with multiple heat sources, and a heat pump system thereof. The use efficiency of a heat pump and the energy utilization rate are improved while the coupled use of the multiple heat sources is achieved; meanwhile, flue gas waste heat can be recycled, and purification is achieved; and the side of the evaporator is prevented from being frosted effectively. The compound evaporator comprises a shell, and flanges arranged at the two ends of the shell; the shell comprises an outer shell and an inner shell; a spiral refrigerant flow channel is arranged in a clearance between the outer shell and the inner shell; an inside cavity of the inner shell forms a coupled working medium flow channel, and the two ends of the inner shell are provided witha coupled working medium inlet and a coupled working medium outlet separately; the outer side of the outer shell is provided with a plurality of flue gas cooling fins, and a flue gas channel used forheat exchange is formed between the adjacent flue gas cooling fins; and the two ends of the outer shell are separately provided with a refrigerant inlet and a refrigerant outlet which communicate withthe refrigerant flow channel.

The utility model discloses energy-saving and environment-friendly heating equipment, and particularly relates to the technical field of heating equipment, the energy-saving and environment-friendly heating equipment comprises a heating boiler, one side of the heating boiler is fixedly connected with a boiler water inlet pipe, the other side of the heating boiler is fixedly connected with a waste gas exhaust pipe, and one end of the waste gas exhaust pipe is provided with a waste gas heat exchange mechanism; the waste gas heat exchange mechanism comprises a waste gas treatment box which is fixedly installed on the top of the heating boiler, and a heat exchange pipe is installed in the waste gas treatment box. The waste gas heat exchange mechanism is arranged, heat in high-temperature waste gas generated by the heating boiler is recycled through the waste gas heat exchange mechanism, the energy utilization efficiency is improved, energy waste is reduced, the recycled heat is used for heating water and can be reused or enter other heating links, the requirement for traditional energy is further lowered, and the energy utilization rate is increased. Waste gas can be circulated, heat recovery is more thorough, total heat supply of the heating system is increased, the heating efficiency is improved, and using is more energy-saving and environment-friendly.

The application provides a kind of flue gas waste heat recovery heat exchange system optimization management method and system, it is related to waste heat recovery heat exchange management technical field, it obtains flue gas characteristic parameter sequence in recent preset time, analysis obtains first flue gas fluctuation coefficient;Randomly set recovery end recovery medium flow, do preheating analysis in combination with flue gas characteristic parameter sequence, obtain preheating temperature sequence and exhaust gas temperature sequence;According to exhaust gas temperature sequence, carry out recovery end pipeline corrosion and flue gas characteristic fluctuation analysis, obtain second flue gas fluctuation coefficient;According to first, second flue gas fluctuation coefficient, in combination with preheating temperature sequence and exhaust gas temperature sequence, optimize recovery medium flow, obtain recovery medium flow to control flue gas waste heat recovery.The present application solves the problem that the traditional heat exchange system relies on fixed parameter control for waste heat recovery, which is difficult to cope with the fluctuation of flue gas characteristics, and cannot balance the efficiency of waste heat recovery and the risk of pipeline corrosion, optimizes the management effect of flue gas waste heat recovery of heat exchange system, and saves energy and reduces consumption.

The invention relates to the technical field of boiler waste heat recovery, in particular to a boiler waste heat recovery system which comprises a mounting base, a shell, a heat exchange tube and a dust scraping device, the shell is of a hollow cylindrical structure and is fixedly mounted on the mounting base, sealing end covers are arranged at the two ends of the shell respectively, the heat exchange tube is coaxially and rotatably arranged in the shell through the sealing end covers, and the dust scraping device is arranged in the shell. A smoke channel is formed between the outer wall of the heat exchange pipe and the inner wall of the shell and provided with an air inlet and an air outlet, the heat exchange pipe is provided with a water inlet and a water outlet, the dust scraping device is a scraping strip fixedly arranged on the inner wall of the shell, and the scraping strip rotates along with the heat exchange pipe to make contact with the outer wall of the heat exchange pipe and removes accumulated dust on the outer wall of the heat exchange pipe. And the shell is provided with an ash outlet below the air outlet. The boiler waste heat recovery device solves the problem that in the prior art, in the long-time operation process of a boiler waste heat recovery device, smoke dust is prone to being accumulated on the outer wall of a heat exchange pipe, and heat exchange efficiency is reduced, the outer wall of the heat exchange pipe can be kept clean continuously, heat exchange efficiency is improved, and stable operation of equipment is guaranteed.

The utility model provides a flue gas waste heat indirect recovery and desulfurization water balance system for a coal-fired power plant. The system comprises a flue gas desulfurization system, a slurry heat exchanger and a cooling water circulation system, the output end of the flue gas desulfurization system is connected with a first inlet of the slurry heat exchanger, and a first outlet of the slurry heat exchanger is connected with the input end of the flue gas desulfurization system; a second inlet of the slurry heat exchanger is connected with the output end of the cooling water circulation system, a second outlet of the slurry heat exchanger is connected with the input end of the cooling water circulation system, and the tail end of the second inlet cooling water circulation system is arranged in a heating water pump room. And the returned water and supplemented circulating water of the heating water pump room are conveyed into the slurry heat exchanger through the booster pump. The system recovers and utilizes the waste heat of the slurry in the absorption tower of the desulfurization system of the coal-fired power plant, greatly reduces the energy consumption, and reduces the energy consumption cost.

This invention relates to the field of flue gas reheating technology, and more particularly to a flue gas reheating device after wet flue gas purification. The device includes a base, an inlet pipe, a purification rod, an unpurified gas pipe, a first curved gas pipe, a second curved gas pipe, a third curved gas pipe, a fourth curved gas pipe, a first cylindrical cavity, a second cylindrical cavity, a third cylindrical cavity, a fourth cylindrical cavity, a first curved guide tube, a second curved guide tube, a third curved guide tube, a fourth curved guide tube, a mixing device, a heating device, and a cooling device. The first cylindrical cavity, the second cylindrical cavity, the third cylindrical cavity, and the fourth cylindrical cavity are sequentially installed from bottom to top on the upper end of the base. This invention uses multiple cylindrical cavities to heat the flue gas in layers and stages. The mixing device mixes the flue gas heated to different temperatures, and the flue gas flow rate in each curved guide tube can be adjusted via gas pipe valves to regulate the temperature of the flue gas to be emitted, ensuring the purified gas is emitted at a stable temperature of 80°C and preventing the formation of white smoke.

The present application relates to waste incineration technical field, specifically to a kind of waste incineration flue gas low temperature corrosive test platform and working method.The platform includes the first pipeline connected with the flue gas outlet of bag filter and the second pipeline connected with the flue gas outlet of flue gas cooler, the outlet of the first pipeline and the outlet of the second pipeline are connected with first flue gas main pipe;The first flue gas main pipe is connected with multiple parallel heat exchange branch lines;Each heat exchange branch line is provided with heat exchanger, the heat exchange branch line is provided with flowmeter, flue gas volume regulating valve, temperature measuring point and induced draft fan;The outlet of the heat exchange branch line is connected with second flue gas main pipe, and the outlet of the second flue gas main pipe is connected with chimney and communicates;The cooling water outlet of all heat exchangers is connected with the first cooling water main pipe of cooling tower;The cooling water inlet of all heat exchangers is connected with the second cooling water main pipe of cooling tower.The test platform can be used for the corrosion resistance test and evaluation of various materials.

The utility model discloses a fin economizer and relates to the technical field of economizers. The device comprises a ventilation pipe, heat conduction boxes are symmetrically installed in the ventilation pipe, heat conduction liquid is arranged in the heat conduction boxes, separation mechanisms are arranged in the two heat conduction boxes, a communicating heat absorption mechanism is arranged between the two heat conduction boxes, and a cleaning mechanism is arranged on the communicating heat absorption mechanism. And two containing holes are formed in the side wall of the ventilation pipe, the two containing holes are formed in the upper end and the lower end of the ventilation pipe correspondingly, a liquid supply pipe is installed in one containing hole in an inserted mode, and one end of the liquid supply pipe communicates with one heat conduction box. When flue gas emission is stopped, the floating plate and the cleaning rod can be guided by the guide telescopic rod to scrape away adhering objects and impurities in the gas guide pipe under the action of gravity, waste of the device can be conveniently removed, and therefore the heat absorption face in the economizer can keep a good heat conduction effect, and the energy recovery rate of the economizer is improved.

The utility model relates to the technical field of waste heat utilization equipment, and discloses a waste heat utilization device of a flue gas heat exchanger, which comprises a flue gas heat exchanger casing, a connecting groove communicated with the inside of the flue gas heat exchanger casing is arranged on the outer surface of the flue gas heat exchanger casing, and a plurality of heat conduction pipes are fixedly sleeved on the flue gas heat exchanger casing. The surface of the front side of the flue gas heat exchanger shell is fixedly connected with a flue gas inlet communicated with the interior of the flue gas heat exchanger shell, a cleaning mechanism is arranged on the flue gas heat exchanger shell, and according to the waste heat utilization device of the flue gas heat exchanger, the scraping frame moves up and down to scrape the inner wall of the flue gas heat exchanger shell up and down, so that dust in the flue gas heat exchanger shell is cleaned; dust after cleaning falls out through the connecting groove, cleaning is convenient and fast, manpower is saved, resource waste is avoided, the utilization efficiency of smoke waste heat is guaranteed, the heating efficiency of the heat conduction pipe is guaranteed, and then the practicability of the device is guaranteed.

The utility model discloses a water-heating biomass civil stove provided with a water-cooled anti-slagging fire grate, which relates to the technical field of biomass heating stoves and comprises a stove body, a combustion chamber and a heat exchange chamber are arranged in the stove body, an ash chamber is arranged below the combustion chamber, and the ash chamber is provided with an ash discharge door; heat exchange modules are arranged in the heat exchange chamber, and a flue communicated with the combustion chamber and the smoke exhaust pipe is inserted between the heat exchange modules; a fire grate is installed in the combustion chamber and comprises a primary air channel, a water cooling channel and a fire grate upper plate, an inlet of the primary air channel is communicated with an air blower, and a primary air outlet hole facing the fire grate upper plate is formed in the primary air channel. An inlet of the water-cooling channel communicates with the circulating water inlet, an outlet of the water-cooling channel communicates with the heat exchange module, and circulating water is discharged through the circulating water outlet after being heated by the heat exchange module; the fire grate is cooled in a water cooling mode, the phenomenon of high-temperature slagging is avoided, and cooling water can enter circulating water after being used up for secondary heating and utilization.

The utility model discloses a mechanical vibration deashing device for a heating surface of a coiled pipe, which is characterized in that a flue in a boiler is divided into an inner flue and an outer flue through a membrane type wall enclosure pipe, the mechanical vibration deashing device comprises the coiled pipe in the flue, and the heating surface of the coiled pipe is longitudinally connected through a pipeline protecting tile and a coiled pipe connecting plate. The transverse pipe row direction of the coiled pipes is transversely connected through a comb-shaped vibration and beating connecting plate, one end of the comb-shaped vibration and beating connecting plate is led out to the outer end of the flue and welded with a vibration and beating sleeve, and the comb-shaped vibration and beating connecting plate is provided with a concentric-square-shaped vibration and beating sealing device at the position where the comb-shaped vibration and beating connecting plate penetrates through the membrane type wall wrapping pipe. Attached ash on the heating surface of the coiled pipe is effectively removed, and especially for coiled pipe attached ash which is poor in ash blowing effect and high in viscosity of some steam ash blowers and shock wave ash blowers, the heat exchange effect of the heating surface of the coiled pipe is guaranteed, meanwhile, the smoke temperature is reduced, safe and stable operation of a boiler is guaranteed, and energy-saving economic benefits are generated.

The utility model discloses a waste heat utilization pipeline for boiler combustion optimization, which comprises a pipeline body, a plurality of heat exchange plates and a plurality of cleaning components, and the plurality of heat exchange plates are arranged in parallel at intervals along the length direction of the pipeline body. The corresponding cleaning assemblies are arranged on the contact faces of all the heat exchange plates and smoke and used for removing smoke steam impurities accumulated on the heat exchange plates. The heat exchange plate is of a wave-shaped structure and is used for increasing the contact area between the heat exchange plate and smoke. Corresponding cleaning assemblies are arranged at the bottoms of all heat exchange plates installed in a waste heat utilization pipeline, so that the cleaning assemblies are driven by rotating driving parts to move in the length direction of lead screws, and then a cleaning roller installed between the two lead screws moves along the heat exchange plates; and furthermore, metal bristles on the cleaning roller are used for removing smoke impurities accumulated on the heat exchange surface of the heat exchange plate, so that the waste heat utilization efficiency of the waste heat utilization pipeline for boiler combustion optimization is improved.

The utility model relates to a heat exchanger for flue gas waste heat utilization, and relates to the technical field of heat exchangers, the heat exchanger comprises a flue gas pipe and a cold water pipe arranged in the flue gas pipe, the two ends of the cold water pipe are fixedly arranged on the side wall of the flue gas pipe in a penetrating mode, and a filter assembly is arranged at the gas inlet end of the flue gas pipe and comprises a filter screen plate and an impurity collecting plate; one side of the filter screen plate is hinged to the smoke pipe through a hinge shaft, the impurity collecting plate is bent to be in a circular arc shape and located on the side, away from the hinge shaft, of the filter screen plate, the impurity collecting plate is fixedly connected with the smoke pipe, and the side, away from the hinge shaft, of the filter screen plate is attached to the arc face of the impurity collecting plate and is in sliding connection with the impurity collecting plate. The flue gas heat exchanger has the effect that the heat exchange effect of flue gas and cold water is not easily reduced due to impurities.

The present invention provides a device for utilizing the waste heat of boiler flue gas, belonging to the technical field of flue gas treatment, which includes a support assembly, a swing assembly, a storage bin, an air inlet assembly, and a swing gas transmission assembly. The storage bin is rotatably arranged on one side of the support assembly for storing coal. The swing assembly is installed on one side of the storage bin for driving the storage bin to swing reciprocally. One end of the air inlet assembly extends into the storage bin and is movably connected to the swing gas transmission assembly. The air inlet assembly is used for conveying the boiler flue gas to the inside of the storage bin via the swing gas transmission assembly. When the flue gas flows through the swing gas transmission assembly, it can drive the swing gas transmission assembly to swing. Compared with the prior art, the embodiment of the present invention can utilize the boiler flue gas to heat and dry the external coal, realizing the full recovery and utilization of the waste heat of the flue gas, and having the advantages of good coal drying effect and good waste heat utilization effect of the flue gas.

The utility model relates to the technical field of flue gas heat exchangers, and discloses a sealing device of a rotary flue gas heat exchanger, which comprises two fixing frames, the left side and the right side of the fixing frame on the rear side are both in threaded connection with two bolts I, and the front ends of the bolts I penetrate through the left side and the right side of the fixing frame on the front side; the device comprises two fixing frames, the interiors of the two fixing frames are fixedly connected with the same exhaust pipe, the interior of the fixing frame on the rear side is fixedly connected with a fixing plate, the rear side of the fixing plate is fixedly connected with fan blades, the interior of the fixing frame on the front side is fixedly connected with a heat exchange pipe, and the sides, away from each other, of the two fixing frames are fixedly connected with air conveying hoppers. The gas conveying pipe is externally connected with the gas conveying pipe, the mounting plate is arranged on the outer wall of the connecting pipe and fastened with the gas conveying hopper through bolts, rapid mounting and dismounting are facilitated, the sealing ring is embedded in the mounting plate, after the gas conveying pipe is inserted, the sealing ring is attached to the pipe wall, gas leakage is eradicated, and therefore the situation that equipment is affected by gas leakage is avoided, and working efficiency is improved.

The utility model provides a self-cleaning boiler flue gas waste heat recovery device, belongs to the field of waste heat recovery, and aims to solve the problem that impurities in gas are inconvenient to filter and clean conveniently, the self-cleaning boiler flue gas waste heat recovery device comprises a heat exchange box, and a fixed pipe is fixedly connected to the heat exchange box. The device is provided with a reciprocating screw rod; when waste heat recovery gas is filtered, impurities in the gas can be filtered through a filter screen in a treatment box, when the impurities on the filter screen are cleaned, an electric motor can be started to drive a reciprocating screw rod to operate, and the reciprocating screw rod can drive a fixing block to reciprocate during rotation; the fixing block drives the cleaning brush plate to move at the same time when moving, the cleaning brush plate can stably move through sliding supporting of the sliding block on the sliding rod when moving, the cleaning brush plate can clean impurities on the filter screen during reciprocating movement, and cleaned dust falls into the collecting box to be collected in a centralized mode. And the filter screen can avoid the situation that the gas is not filtered and is directly discharged.

This utility model belongs to the field of heat exchange equipment, and particularly relates to a high-temperature resistant water-cooled wall structure, including a heat insulation layer, a pump body, a channel pipe, and a water-cooled pipe. The pump body is installed on the lower side of the heat insulation layer, with its inlet end extending forward. The channel pipe is fixed to the outlet end of the pump body extending downward. The water-cooled pipe is installed inside the heat insulation layer, and the channel pipe is connected to the cross-shaped pipe at the bottom of the water-cooled pipe to form a flow path for the cooling medium. By setting an electric push rod and a cleaning brush, ash and particulate impurities adhering to the outer wall of the water-cooled pipe can be automatically removed, avoiding a decrease in heat exchange efficiency due to ash accumulation, ensuring that high-temperature gas can fully contact the surface of the water-cooled pipe, significantly improving the heat exchange effect, and extending the service life of the equipment.

The utility model relates to the technical field of waste heat collection, in particular to a waste heat collection and utilization device for high-temperature waste gas of a boiler, which comprises a shell, a cavity, a water storage cavity and a cavity are respectively arranged in the shell, one side of the shell is fixedly connected with a gas inlet pipe in a penetrating manner, and the gas inlet pipe is communicated with the cavity. The upper end of the shell is fixedly connected with a pipeline in a penetrating mode, and the other side of the shell is fixedly connected with an exhaust pipe in a penetrating mode. A plurality of through grooves are formed in the side walls of the heat exchange pipes, the through grooves are communicated with the interior of the cavity, the ends of the heat exchange pipes are communicated with the cavity, and filter cartridges are slidably connected to the interiors of the heat exchange pipes. Waste heat in high-temperature waste gas is recycled and used for heating water in the water storage cavity to generate steam, so that the overall energy utilization efficiency of the boiler system is remarkably improved, heat energy originally discharged into the atmosphere along with the waste gas is effectively utilized and converted into useful steam at present, and energy waste is reduced.

The invention discloses waste heat recycling equipment based on high-salt hazardous waste incineration flue gas purification treatment, and belongs to the technical field of high-salt hazardous waste flue gas waste heat. The waste heat recycling equipment specifically comprises a stacked barrel, a plurality of supporting frame bodies are arranged on the inclined face of the bottom of the stacked barrel, and slag discharging valves connected with the inclined face of the bottom of the stacked barrel are arranged in the supporting frame bodies in a sleeved mode; an air inlet valve is embedded in the center of the bottom end surface of the stacked cylinder; the design of triangular pipe primary heat exchange and staggered heat exchange is adopted, heat is fully recycled, temperature difference damage is reduced, in the aspect of purification, multi-stage impurity removal is achieved through air dissipation interception, grid filtration and component collaborative cleaning, the purification effect is improved, in the maintenance level, components are convenient to replace through a high-temperature filter residue box pull-out structure, and the maintenance cost is reduced. A ring plug scraping disc is matched with an adjusting valve for directional cleaning, the downtime is shortened, a main exchange mechanism and an auxiliary exchange mechanism can be independently adjusted and controlled, flexible and stable operation of equipment is guaranteed, and efficient recycling and long-term use are both considered.