1189results about "Combustion technology mitigation" patented technology

The present invention relates to the field of boiler flue gas waste heat recovery, and relates in particular to a boiler flue gas waste heat recovery device for a power plant. The boiler flue gas waste heat recovery device comprises a recovery box. The recovery box is sequentially divided from top to bottom into a first chamber and a second chamber by a horizontal partition. A heat exchange tube is provided in the first chamber, one end of the heat exchange tube is connected to a flue gas outlet tube of a boiler, and the first chamber is provided with an inlet for a fluid awaiting heat exchange. The other end of the heat exchange tube is in communication with the second chamber, and a filtering device is provided in the second chamber. The present invention achieves effective cooling of boiler flue gas, and allows a large amount of particulate matter contained in the flue gas to be filtered out, thereby reducing environmental harm by processing the flue gas.

The invention discloses an efficient gradient utilization medium and low temperature flue gas waste heat recovery system and method, and relates to the technical field of waste heat recovery. When the contact time between the medium and low temperature flue gas and a heat medium is short and the heat conduction contact area is small, the heat transferred to the heat medium by the medium and low temperature flue gas is small, the waste heat recovery amount is small, and the recovery effect is affected. The arc-shaped recess in the center of the inner side of the heat medium bin is matched with the smoke exhaust mechanism, the contact area between the inner side of the heat medium bin and smoke is increased through the recess, the smoke exhaust mechanism limits smoke exhaust, the contact area between the smoke and the heat medium bin is increased, and meanwhile the contact time between the smoke and the heat medium bin is prolonged; the heat of medium and low temperature flue gas is more effectively transferred to the heat medium in the heat medium bin, and the situation that the flue gas and the heat medium bin are small in contact area and short in retention time, heat is not completely transferred and discharged, and the waste heat recycling rate is low is avoided.

The invention relates to the technical field of heat exchangers, and discloses a coal-fired boiler fluoroplastic steel efficient heat exchanger which comprises a shell, a first cold flow pipe is fixedly connected to the upper circumferential face of the shell, a second cold flow pipe is fixedly connected to the lower circumferential face of the shell, and a support is fixedly connected to the lower circumferential face of the shell. A first sleeve shell is fixedly connected to the right side face of the shell, a first pipe box is fixedly connected to the right side face of the first sleeve shell, and a fixing plate is fixedly connected to the right side face of the first pipe box. The roller rotates to drive the rotating rod and the cleaning brush to rotate, the whole circumferential face of the cleaning brush can make contact with the inner wall of the heat exchange tube when the cleaning brush rotates, more smoke can be removed, and the cleaning effect is improved.

The invention discloses a boiler flue gas waste heat recovery device, and relates to the technical field of boilers. Comprising a base, a heat exchanger and a dust collecting box which are arranged on the base, and five groups of heat exchange tubes which are transversely arranged in the heat exchanger; the cleaning unit comprises a smoke exhaust pipe and a smoke guide pipe, the smoke exhaust pipe is arranged between the heat exchanger and the ash collecting box, the smoke guide pipe is arranged on one side of the heat exchanger, and the smoke exhaust pipe and the smoke guide pipe are both communicated with the heat exchange pipe. By arranging the transverse cleaning assembly and the vertical cleaning assembly, dirt in the heat exchange pipe and the communicating pipe can be effectively and automatically removed in time, the effect of centralized treatment of the cleaned dirt can be achieved through the blocking assembly, it is ensured that the device can stably operate for a long time, the service life of the device is prolonged, and the using effect is better; dirt on the inner wall of the heat exchange pipe is automatically cleaned, so that the heat exchange efficiency is kept, and heat resistance increase caused by scaling is prevented.

The invention relates to the technical field of heat exchange equipment, and discloses a gas-fired boiler equipment power heat exchange device which comprises a heat exchange box, a heat exchange pipe is installed in the heat exchange box, a plurality of heat exchange fins are installed on the heat exchange pipe, and the heat exchange fins are connected through heat conduction fins; the cleaning block is slidably mounted on the heat exchange fins, and a cleaning brush is mounted on the surface, facing the heat exchange fins, of the cleaning block; the driving assembly is mounted in the heat exchange box; through the arrangement of the heat conduction fins, the temperature difference between the windward heat conduction fins and the leeward heat conduction fins can be reduced, and after the heat conduction fins are used for a period of time, the driving assembly drives the cleaning block to rotate, so that the cleaning block slides on the surfaces of the heat exchange fins to clean dirt attached to the surfaces of the heat exchange fins, and it is ensured that each heat exchange fin is in a clean state; the heat exchange fins can conduct heat sufficiently, so that it is guaranteed that the temperature of the heat exchange fins in all the areas is not uneven, and the heat exchange efficiency of the device is effectively improved.

The invention discloses a natural gas boiler cleaning device, and belongs to the technical field of boiler equipment.The natural gas boiler cleaning device comprises a boiler body and a combustor, the combustor is fixedly connected to one end of the boiler body, a smoke outlet is formed in the other end of the boiler body, a hearth is arranged in the boiler body, the combustor communicates with the hearth, and the combustor communicates with the hearth. The hearth is sleeved with a cleaning mechanism, the cleaning mechanism is slidably connected into the furnace body, one end of the furnace body is fixedly connected with an electric push rod, and the top end of the electric push rod is fixedly connected with the cleaning mechanism. In the using process of the boiler, the internal surface of the boiler can be regularly cleaned, incrustation generated on the inner wall of the boiler is removed, accumulation of the incrustation is delayed, the heat efficiency is improved, energy is saved, the frequency of overall overhauling and cleaning of the boiler during shutdown is reduced, and the production efficiency is effectively improved.

The utility model relates to the technical field of incinerator waste heat boilers, and discloses a structure of an incinerator waste heat boiler, which comprises a waste heat box, communication boxes are fixedly mounted in the middles of two sides of the waste heat box, and one end of the communication box positioned on one side is communicated with the top of an incinerator through a smoke pipe. Uniform water spray is continuously sprayed on the multiple sets of copper pipes through the water spraying disc, the high-temperature copper pipes can heat and vaporize water, high-temperature steam is generated and discharged from the steam pipe, meanwhile, after the waste heat box is used for a period of time, the motor can be driven to drive a screw in the self-cleaning mechanism to rotate, and the self-cleaning effect is achieved. The movable block in threaded connection with the screw can drive the multiple sets of cleaning cylinders to move on the copper pipe, scale attached to the copper pipe can be cleaned, the cleaned scale can be pushed into the recycling pipe along with movement of the cleaning brush, and the situation that the water heating efficiency of the copper pipe is greatly reduced and the waste heat recycling efficiency is reduced along with continuous increase of the scale is avoided.

The invention is suitable for the technical field of flue gas waste heat utilization, and provides a high-temperature flue gas heat exchanger which comprises a heat exchange assembly, and a flue gas inlet assembly is fixed to the top of the heat exchange assembly; the heat exchange assembly comprises a box part, a water inlet part inserted into the box part and a plurality of heat conduction parts slidably arranged on the water inlet part, and the smoke inlet assembly comprises a smoke inlet part, a displacement part slidably arranged in the smoke inlet part and a blocking part slidably arranged in the smoke inlet part. The high-temperature flue gas heat exchanger solves the technical problems that in the using process of an existing high-temperature flue gas heat exchanger, heat exchange tubes and fins in the high-temperature flue gas heat exchanger are mostly fixedly connected into the high-temperature flue gas heat exchanger, the heat exchange effect of the high-temperature flue gas heat exchanger is too poor, and the heat exchange effect of waste heat in flue gas is reduced. The technical effects that smoke flow in the heat exchange box can be accelerated, the heat exchange effect of the multiple fins and the smoke in the heat exchange box is improved, and the later heat exchange efficiency is improved are achieved.

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 invention discloses waste heat recovery equipment for treating combustion flue gas for natural gas power generation, and relates to the technical field of flue gas waste heat recovery, the side face of a shell is fixedly connected with a flue gas inlet component, and the side, away from the flue gas inlet component, of the shell is fixedly connected with a flue gas outlet component. When combustion flue gas enters the shell through the flue gas inlet pipe, an external water pipe is connected with the water inlet, cold water continuously enters the heat exchange box through the water inlet, so that the cold water is fully contacted with the combustion flue gas to heat the cold water, and meanwhile, the heated cold water is discharged through the water outlet; when combustion smoke continuously makes contact with the heat exchange pipe, a large amount of condensate water is left on the side face of the heat exchange pipe in a hanging mode, when the combustion smoke continuously makes impact contact with the heat exchange box, the contact mechanism moves on the sliding rod, and therefore the contact mechanism scrapes off the condensate water left on the heat exchange pipe in a hanging mode.

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

The embodiment of the invention provides a cooling system and method for flue gas condensate water. The cooling system comprises a flue gas condensate water collecting pool; the flue gas condensate water reservoir is used for storing the cooled flue gas condensate water; the booster pump is used for pumping flue gas condensate water in the flue gas condensate water collecting pool to an inlet of the air cooling heat exchanger through a water supply pipeline; the air cooling heat exchanger is used for preliminarily cooling flue gas condensate water, and an outlet of the air cooling heat exchanger communicates with an inlet of the wet cooling tower through a water outlet pipeline; the wet cooling tower is used for carrying out secondary cooling on outlet water from the air cooling heat exchanger, and an outlet of the wet cooling tower is communicated with the flue gas condensate water reservoir through a water conveying pipeline; the bypass pipeline communicates with the water outlet pipeline and the water conveying pipeline. The bypass control valve is arranged on the bypass pipeline and is electrically connected with the control device; the control device is used for controlling the opening and closing states of the bypass control valve according to preset conditions so as to control whether outlet water of the air cooling heat exchanger flows through the wet cooling tower or not for secondary cooling.

The utility model relates to the technical field of boilers, in particular to a flue gas turbulent flow assembly for a boiler, which comprises a turbulent flow pipe, a flue gas turbolator is mounted in the turbulent flow pipe, positioning devices are detachably mounted at two ends of the turbulent flow pipe, the flue gas turbolator is of a spiral structure formed by twisting a thin plate, and the positioning devices are mounted at one end of the turbulent flow pipe. According to the flue gas turbulent flow assembly for the boiler, through the unique design, the heat exchange efficiency is improved, meanwhile, flue gas resistance is not excessively increased, and the overall performance of the boiler is remarkably improved. Specifically, due to the spiral structural design of the flue gas turbolator, the laminar flow state of flue gas is effectively broken, the turbulence degree of the flue gas is enhanced, and therefore the heat exchange efficiency is improved. Meanwhile, due to the fact that the length of the smoke turbolator is smaller than that of the turbulent flow pipe, the smoke turbolator is only arranged in part of the area, and therefore it can be guaranteed that the heat exchange efficiency is improved, and smoke resistance cannot be excessively increased.

The invention relates to a thermal power plant boiler flue gas waste heat recycling system, and belongs to the technical field of boiler flue gas waste heat recycling. The flue gas waste heat recycling system for the boiler of the thermal power plant comprises a smoke exhaust pipe; a cleaning module and a heat exchange assembly are sequentially arranged in the smoke exhaust pipe in the smoke inlet direction. According to the flue gas treatment device, flue gas can be treated in a centralized mode under the action of the cleaning module, heat loss can be reduced in the treatment process, follow-up heat exchange operation is facilitated, and smoke dust in the cleaned flue gas can be intercepted in a connecting ring and independently discharged through a discharging structure; flue gas flows to drive a driving blade to enable a rotating ring to rotate, then a rotating shaft is driven to enable a second spiral conveying plate to rotate, smoke dust guided into a fixing pipe is conveyed and discharged, the cleaning difficulty is reduced, meanwhile, the smoke dust adhering to the surface of the driving blade can be cleaned under the combined action of a knocking ball, a mounting rod, the rotating shaft and a clockwork spring, and the practicability is high. And the cleaning effect is effectively improved.

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.

The utility model discloses a boiler flue gas waste heat recovery mechanism, belongs to the technical field of boiler flue gas waste heat recovery, and solves the problems that when a flue gas recovery device recovers flue gas, the flue gas can directly enter the position of a discharge port through an inlet of the device, the recovered flue gas cannot be completely utilized, and the flue gas recovery efficiency is low. The device comprises a box body and a heat preservation cavity, the heat preservation cavity is formed in the box body, a mounting frame is fixedly mounted in the heat preservation cavity, a filter plate is arranged at the bottom of the mounting frame, a smoke inlet pipe and a smoke exhaust pipe are fixedly mounted at the upper end of the box body, and the smoke exhaust pipe is arranged on the right side of the mounting frame. And the smoke inlet pipe is arranged at the upper end of the mounting frame, the smoke inlet pipe and the smoke exhaust pipe are both communicated with the interior of the heat preservation cavity, smoke from the interior of the machine to the interior of the mounting frame can be slowly exhausted through the arranged heat preservation cavity, the temperature in the heat preservation cavity can be increased, and the utilization efficiency of the recycled smoke is improved.

The utility model relates to a wet flue gas desulfurization device which is characterized in that the upper end of a desulfurization box is fixedly communicated with a liquid inlet pipe, the upper end of the desulfurization box is fixedly communicated with a smoke discharge pipe, the bottom of the desulfurization box is fixedly communicated with a liquid discharge pipe, and a flue gas cooling device is arranged on the left side of the desulfurization box. The outlet end of the smoke cooling device fixedly communicates with the inlet end of a smoke guide pipe, the outlet end of the smoke guide pipe fixedly communicates with the inlet end of a corrugated hose, the outlet end of the corrugated hose fixedly communicates with the inlet end of a dispersion box, and the feeding end of the dispersion box fixedly communicates with a one-way valve. A plurality of dispersing holes are uniformly distributed in the surface of the dispersing box, the reciprocating moving device is fixedly connected with an upper support connected with the upper end of the dispersing box, the two lower supports are jointly and rotationally connected with a longitudinal shaft, a plurality of stirring rods are integrally and uniformly distributed on the longitudinal shaft, and a gear is coaxially and fixedly connected to the front end of the longitudinal shaft; the bottom of the desulfurization box is fixedly connected with a rack which is meshed with the gear and is transversely arranged.

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 invention belongs to the technical field of boiler corollary equipment, particularly relates to a temperature-controllable low-temperature economizer, and aims to solve the problem that the use function of equipment is affected due to the fact that the exhaust smoke temperature cannot be effectively reduced, the temperature-controllable low-temperature economizer comprises a tool supporting frame, a boiler body is fixedly connected to the upper portion of the tool supporting frame, and a smoke outlet is formed in the outer portion of the boiler body; a smoke exhaust channel is fixedly connected to the interior of the smoke exhaust port, a processing module is arranged on the smoke exhaust channel, the processing module comprises rhombic hole heat conduction plates, a driving motor, a heat insulation frame, a partition plate, a rotating cylinder and a heating circulation frame, and the rhombic hole heat conduction plates are distributed in the smoke exhaust channel at equal intervals; the two sides of the smoke exhaust channel are each provided with two sliding openings. The temperature-controllable low-temperature economizer disclosed by the invention has the effects that heat in smoke can be absorbed by the rhombic hole heat conduction plate, so that the smoke exhaust temperature is effectively reduced, and the use function of the economizer is prevented from being influenced.

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 utility model discloses a novel flue gas desulfurization and deacidification device. The device comprises a desulfurizing tower, a slurry supplementing box and a slurry box, a smoke inlet is formed in one side of the desulfurizing tower, a smoke outlet is formed in the top of the desulfurizing tower, a slurry pond is arranged in the lower end of the desulfurizing tower, a discharging pump and a first circulating pump are connected to one side of the slurry pond, and the first circulating pump is connected with a first spraying pipe; the slurry supplementing box is connected with a liquid supplementing pump through a fourth electric actuator, the liquid supplementing pump is connected with a first spraying pipe, the slurry box is connected with a second spraying pipe, a packing layer and a water collecting tray are sequentially arranged on the lower side of the second spraying pipe, and the water collecting tray is connected with the slurry box. According to the utility model, when slurry in the slurry tank is replaced, the flue gas can still be subjected to desulfurization and deacidification treatment; the third heat exchanger is used for heating the injected new slurry, so that the temperature of the slurry injected into the desulfurization tower is prevented from being too low; the treated flue gas is heated by the fed flue gas in the fourth heat exchanger, so that the phenomenon of white smoke caused by low temperature after treatment is avoided.

The invention relates to the technical field of waste heat recycling, in particular to a waste incineration flue gas waste heat recycling device and method.The waste incineration flue gas waste heat recycling device comprises a recycling box and further comprises a plurality of heat conduction pipes, a plurality of heat exchange pipes and a plurality of heat exchange pipes, the slag scraping pieces are arranged in the upper smoke exhaust cavity and correspond to the heat conduction pipes one to one; and the lifting mechanism is arranged on the recycling box. By arranging the heat conduction pipe, the slag scraping piece and the lifting mechanism, when waste incineration flue gas waste heat is recycled, flue gas penetrates through the heat conduction pipe from bottom to top, and particle impurities in the flue gas are attached to the inner wall of the heat conduction pipe; when the inner wall of the heat conduction pipe needs to be cleaned, the slag scraping piece is driven by the lifting mechanism to move downwards and penetrate through the interior of the heat conduction pipe, so that impurities attached to the inner wall of the heat conduction pipe are scraped off, the heat transfer efficiency is prevented from being affected by the impurities, and the problem that in the prior art, the flue gas waste heat recovery effect is poor is solved.

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 relates to the field of boiler waste heat recovery equipment, in particular to a waste heat recycling device of a flue gas waste heat recovery boiler, which comprises a boiler body and a filter component. The filter assembly comprises a shell, a mounting seat, a filter seat, a connecting pipe, a cleaning component and a recycling component, the shell is fixedly connected with the boiler body, the mounting seat is fixedly connected with the shell, the filter seat is rotatably connected with the mounting seat, and the connecting pipe is fixedly connected with the mounting seat. Smoke firstly penetrates through the smoke inlet in the mounting seat, then is filtered by the filter seat and then enters the shell, finally the smoke is introduced into the recovery component through the connecting pipe, and waste heat in the smoke is recovered through the recovery component, so that the smoke is filtered, and the smoke is prevented from being attached to the interior of the recovery component to influence the heat transfer efficiency.

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.