864results about "Combustion technology mitigation" patented technology

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 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 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 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 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 present invention provides an anti-wear flue gas heat exchanger, comprising a plurality of groups of heat exchange pipes, a newly added header heat exchange pipe, a water inlet header, a water outlet header and an anti-wear dummy pipe; a plurality of groups of the heat exchange pipes are arranged between the water inlet header and the water outlet header, the newly added header heat exchange pipe is arranged on the side close to the water outlet header, and the anti-wear dummy pipe is arranged on the side close to the newly added header heat exchange pipe. The present invention also provides an adjustment method using the above-mentioned anti-wear flue gas heat exchanger. The present invention can make full use of the limited flue layout space, arrange as much heat exchange area as possible under the same budget, and reduce unnecessary waste. At the same time, the operating flexibility of the flue gas heat exchanger is improved, and in the case of local wear, the overall operation of the equipment is not interfered, thereby improving the reliability of the equipment.

The utility model relates to the technical field of flue gas waste heat recovery equipment, in particular to a boiler tail flue gas waste heat recovery device, which comprises a filter box, a filter assembly, a gas inlet pipe, a transmission pipe, a gas inlet pipe, a gas outlet pipe and a gas outlet pipe, according to the utility model, the filter assembly is arranged, so that impurities such as dust in flue gas can be filtered by the filter screen, and the phenomenon that the impurities in the flue gas are attached to the peripheral side of the heat exchange tube to influence the heat exchange effect of the heat exchange tube is avoided; and meanwhile, personnel can conveniently clean and replace the filter screen, the situation that dust is accumulated on the filter screen to affect the filtering effect is avoided, heat exchange is conducted between flue gas and the heat exchange pipes and the heat exchange pieces through the heat exchange assembly, at the moment, the temperature of the flue gas is reduced, the temperature of water in the heat exchange pipes is increased, boiler flue gas waste heat recovery is achieved, and energy waste is avoided.

The invention relates to the technical field of ultra-supercritical heat energy equipment, in particular to miniaturized ultra-supercritical heat energy equipment which comprises a boiler main body, a combustor is arranged at the bottom end in the boiler main body, a high-temperature section coil pipe is arranged above the combustor and located in the boiler main body, and a low-temperature section coil pipe is fixedly connected to the upper portion of the high-temperature section coil pipe. A superheater is fixedly connected to the bottom of the low-temperature section coil and located on the top of the high-temperature section coil, an energy saver is arranged on the top of the low-temperature section coil, a heat collecting pipe is arranged on the top of the energy saver, a smoke opening is formed in the top of the boiler body, a smoke pipe is fixedly connected to the outer side of the smoke opening, and an exchanger is fixedly connected to the end, away from the boiler body, of the smoke pipe. The top of the exchanger is fixedly connected with a water inlet pipe, and an exchange assembly is arranged in the exchanger. The high-temperature waste gas heat exchanger has the beneficial effects that high-temperature waste gas can heat water in the exchanger and is used for utilizing waste heat of the high-temperature waste gas, and energy waste is reduced.

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.