94 results about "Boiler blowdown" patented technology

The invention discloses a water quality stabilizer suitable for in-furnace treatment of medium-pressure, high-pressure and ultrahigh-pressure boilers and a preparation method of the water quality stabilizer. The water quality stabilizer comprises polyamine organic amines, an organic deoxidant, high-molecular polymeric salt, a silt adjusting agent and pure water. According to the water quality stabilizer disclosed by the invention, one medicament can replace three medicaments of ammonia water, hydrazine and trisodium phosphate added in a traditional boiler, the water quality stabilizer has multiple functions of film forming, corrosion inhibition, deoxygenization, passivation, scale inhibition, scale dissolution, dispersion, chelation, water quality stabilization and the like, meanwhile, the discharge capacity of the boiler can be greatly reduced, the heat energy loss and the water waste can be reduced, and the heat energy utilization rate can be improved. The preparation method disclosed by the invention has the advantages of good batch production effect, stable product performance and long shelf life.

The utility model relates to a blow-off flash steam recovery system for a heat recovery coke oven waste heat boiler, which is characterized in that heat recovery boilers are provided with heat recovery boiler drums, the bottoms of the heat recovery boilers are provided with heat recovery boiler blow-off pipes, and sewage outlets of the heat recovery boiler drums are connected with sewage inlets II of corresponding blow-off flash tanks through pipelines II; a blow-off pipe of the heat recovery boiler is connected with a first sewage inlet of the corresponding blow-off flash tank through a first pipeline, the top end of each blow-off flash tank is connected with an inlet of the steam compressor unit through a third pipeline, and an outlet of the steam compressor unit is connected with the low-pressure steam pipe network through a fourth pipeline. The heat recovery system has the advantages that pollution discharge flash steam of all the heat recovery boilers is recovered through the header pipe, the number of devices is reduced, and investment optimization and operation maintenance of the devices are facilitated; the steam compressor unit sucks flash steam, the flash steam is compressed and boosted to low-pressure steam, the low-pressure steam is connected to a low-pressure steam pipe network through an outlet pipeline of the steam compressor, and white steam caused by blow-off steam diffusion is avoided.

The invention discloses a self-cleaning filter for wastewater treatment and a treatment method of boiler blow-off wastewater, and relates to the field of wastewater treatment.The self-cleaning filter comprises a filter shell, a filter screen is arranged in the filter shell, a water inlet pipe is fixed and communicated to the side wall, close to the top, of the filter shell, and a water outlet pipe is fixed and communicated to the side wall, close to the bottom, of the filter shell; a partition plate is fixed and installed in the filter screen, the water inlet pipe is located above the partition plate, the filter screen is cylindrical and fixedly connected with the partition plate, and a cleaning assembly is arranged in the filter screen. The cleaning brush is matched with the rotating filter screen, so that the filter screen can be cleaned in real time, impurity blockage is prevented, proper contact pressure between the cleaning brush and the filter screen is ensured through elastic pressure of the compression spring, and the cleaning effect is ensured; the pressure of the cleaning brush can be adjusted according to actual conditions due to the design of adjustable length, so as to adapt to impurity blocking conditions of different degrees; the compression spring structure can absorb vibration and impact in the cleaning process, and the filter screen is protected against damage.

The invention discloses a boiler blow-down water waste heat recovery control method, system and equipment and a medium. The method comprises the following steps that the current waste heat recovery efficiency eta of a waste heat recovery system is obtained; the current scaling coefficient R of a heat exchanger in the waste heat recovery system is obtained; according to the current waste heat recovery efficiency eta and the current scaling coefficient R, the heat transfer coefficient K of the heat exchanger is obtained; the current temperature T and the water quality concentration ratio C of the boiler are obtained; and inputting the heat transfer coefficient K, the current temperature T and the water quality concentration ratio C into a preset discharge capacity optimization model to obtain the optimal discharge capacity Q. The method has the advantages that the discharge capacity can be adaptively adjusted, and the boiler safety and waste heat recovery requirements can be balanced.

The utility model belongs to the technical field of waste heat boilers, and particularly relates to a waste heat boiler blow-off recovery device which comprises a waste heat boiler, a water inlet is formed in one side of the waste heat boiler, a water outlet is formed in the side, away from the water inlet, of the waste heat boiler, a recovery box is arranged on the side face of the waste heat boiler, and a circulating pump is arranged on the side, close to the water inlet, of the recovery box. And a circulating pipe is communicated between the output end of the circulating pump and the water inlet. When the inner side of the waste heat boiler is circularly flushed, incrustation can be continuously flushed out along with the cleaning agent, obvious incrustation particles can be filtered and recycled through the recycling barrel after entering the recycling barrel, small incrustation particles can enter the settling chamber to be settled and recycled, and then the cleaning agent flows back into the circulating chamber in an overflowing mode. By means of the technical scheme, water scale can be continuously cleaned and recycled during circulating flushing, it is avoided that too much water scale is doped in a cleaning agent, a circulating pump is blocked, and in addition, the follow-up cleaning effect of the cleaning agent on the boiler is prevented from being affected.

The utility model embodiment provides a kind of integrated cyclone dust collection dry quenching boiler blowdown water temperature interlocking control system, including water collecting well, integrated cyclone dust collection dry quenching boiler, temperature acquisition device, cold water supplement device and high-temperature interlocking control device.Temperature acquisition device is set in water collecting well.Cold water supplement device includes cold water pipe and electric control valve, and the water outlet of cold water pipe is set in water collecting well, and electric control valve is set in cold water pipe.High-temperature interlocking control device is electrically connected with temperature acquisition device and electric control valve respectively, when the temperature value reached upper limit preset condition that temperature acquisition device collects, high-temperature interlocking control device opens electric control valve, when the temperature value reached lower limit preset condition that temperature acquisition device collects, high-temperature interlocking control device closes electric control valve.High-temperature interlocking control device can automatically carry out cold water supplement to water collecting well, can continuously maintain water temperature in water collecting well within reasonable range, and reduce steam accumulation, reduce equipment corrosion risk, improve working environment.

The utility model discloses a drip-proof boiler continuous blowdown device, which relates to the technical field of boiler blowdown and comprises a boiler drum and a sealing component, a continuous blowdown regulating valve is arranged in front of the boiler drum, and the sealing component is arranged on the surface of the continuous blowdown regulating valve. The sealing assembly comprises connecting flanges, a rear connecting pipe, a front connecting pipe, mounting bolts, a first sealing ring, a second sealing ring, a rubber sealing ring and fixing bolts, and the connecting flanges are arranged on the surfaces of the two sides of the lower end of the continuous row adjusting valve. According to the drip-proof boiler continuous blowdown device, the sealing performance of the adjusting valve of the device is greatly improved through the sealing assembly, the drip phenomenon is prevented, the adjusting valve can be rapidly disassembled and assembled, the adjusting valve with inner leakage is convenient to replace, drip caused by aging of the adjusting valve is avoided, continuous blowdown of a boiler can be achieved through the device through the blowdown assembly, and the service life of the boiler is prolonged. The salt content and alkalinity in the pot water are reduced, and the steam quality is prevented from being influenced by over-high concentration of the pot water.

The utility model belongs to the technical field of wastewater reuse, and discloses a PTA boiler periodic blowdown device which comprises a blowdown cooling pool, an industrial water pipe, a blowdown lifting pump and a blowdown lifting assembly, the blowdown cooling pool is divided into two paths, one path is a conventional sewage pipeline, the other path is connected into a factory circulating water pipe network and merged into a circulating water pool, and the industrial water pipe is connected with the industrial water pipe. The blowdown cooling pool is communicated with boiler emergency drain water, deaerator drain water, water supply tank drain water, economizer drain water, superheater drain water, continuous drain water and definite drain water, and is communicated with the blowdown cooling pool through a flash tank; the industrial water pipe is a path of normal-temperature production industrial water, the boiler design rated load is 240 t / h, the boiler design blowdown rate is 2%, boiler emergency drainage, deaerator drainage, water supply tank drainage, economizer drainage, superheater drainage and the like are adopted, regular blowdown is achieved, the boiler blowdown wastewater recycling system is matched with design and transformation, the wastewater treatment cost is reduced, and the energy consumption is reduced. And water resources are saved.

This invention relates to a novel method for controlling the silicon content in boiler water, belonging to the field of water chemistry technology for thermal power plants. The method dynamically determines the allowable silicon content in the boiler water under the current operating conditions based on the real-time boiler operating pressure and a preset negative correlation between boiler pressure and the allowable silicon content in the boiler water. The measured silicon content in the boiler water is compared with this dynamic allowable value, and boiler blowdown is only performed when the measured value exceeds the allowable value. This invention utilizes the physical characteristic that the solubility and carry-over coefficient of silicon in boiler water by saturated steam decreases with decreasing boiler pressure. Under low-load conditions, the control index for silicon content in boiler water is reasonably relaxed, thereby significantly reducing the frequency and amount of boiler blowdown while ensuring steam quality and turbine safe operation. This reduces boiler heat loss and demineralized water consumption, improving boiler thermal efficiency and overall unit economy.

The utility model relates to the technical field of heat recovery, in particular to a boiler blow-off heat energy recovery device which solves the technical problems that a traditional boiler waste heat recovery system is limited in recovery efficiency, waste heat recovery is insufficient easily, and heat energy is wasted, and the boiler blow-off heat energy recovery device comprises a plate heat exchanger and a first box body. A second box body is arranged on the outer side of the top of the first box body and communicates with the first box body through a connecting pipe. A heat recovery part and a fifth box body are arranged in the first box body; the fifth box body is communicated with the first box body through a plurality of smoke holes uniformly distributed in the side wall of the fifth box body; a plurality of lattice heat storage bricks are arranged in each of the first box body and the second box body; and the heat recovery part absorbs heat in the flue gas and heats water in the flue gas. Flue gas heat can be absorbed through the lattice heat storage bricks, and heat energy is stored to stabilize temperature fluctuation of the system; by combining the multi-stage heat exchange design of heat removal sewage heat exchange and flue gas heat exchange, waste heat of sewage and flue gas discharged by the boiler is effectively utilized.

The invention discloses a control method, system, equipment and medium for a recirculation door of an electric feed pump in the boiler pipe blowing process, and belongs to the technical field of boiler pipe blowing. The control method comprises the steps that initialization setting is conducted on the recirculation door and a bypass adjusting valve of the electric feed pump, and the minimum safe flow value of the electric feed pump is obtained; calculating an adjusted minimum flow value based on the value; establishing a piecewise function mapping relation between the opening degree of the bypass regulating valve and the opening degree of the recirculation door, collecting the opening degree of the bypass regulating valve in real time, and calculating the target opening degree of the recirculation door according to the piecewise function mapping relation; and the current value of a motor of the electric feed pump is collected, and the corrected target opening degree is output to serve as a control instruction of the recirculation door. The target opening degree is directly calculated through the piecewise function, manual intervention of the adjusting process is not needed, the misoperation risk is remarkably reduced, and safe and stable operation of a power plant is guaranteed.

The utility model discloses a dry quenching boiler blowdown water temperature interlocking control's heat system relates to the technical field of water collecting well blowdown water cooling system, including water collecting well, cold water pipeline and blowdown water pipeline, the water inlet end of cold water pipeline is connected with cold water source, the water outlet end of cold water pipeline is linked together with water collecting well, the water inlet end of blowdown water pipeline is connected with boiler blowdown pipeline water outlet, the water outlet end of blowdown water pipeline is linked together with water collecting well, be equipped with electric control valve on the cold water pipeline, be equipped with temperature monitoring device in water collecting well, electric control valve with temperature monitoring device all are electrically connected with control device. The utility model can automatically monitor the water temperature in water collecting well, and automatically adjust the water temperature in water collecting well through cold water pipeline to can effectively guarantee the water temperature in water collecting well is in proper temperature, and need not manual participation.

The invention discloses a boiler blow-down water heat recycling system and a boiler blow-down system. The heat recycling system and the boiler blowdown system comprise a heat transfer circulation pipeline, and a gas-liquid separation tank (21), a steam-water mixer (23), a water pump set (24) and a heat exchanger (22) which are arranged in the heat transfer circulation pipeline, the gas-liquid separation tank is connected in the heat transfer circulation pipeline in series, a water drainage pipe opening of the flash tank (1) is communicated to the gas-liquid separation tank, the steam-water mixer is arranged on the upstream side of the gas-liquid separation tank, a water inlet and a mixed gas-water outlet of the steam-water mixer are connected in the heat transfer circulation pipeline in series, and an emptying pipe opening of the flash tank is communicated to a gas inlet of the steam-water mixer. A heat release pipeline of the heat exchanger is connected in series in the heat transfer circulation pipeline, and the heat exchanger can supply heat to the outside. According to the heat recycling system and the boiler blow-off system, heat of high-temperature flash steam and blow-off water discharged by the flash tank can be collected, and the collected heat is supplied to the outside.

The utility model relates to the technical field of thermal boiler production, and discloses a thermal gas-fired boiler regular-discharge steam recovery device which comprises a boiler regular-discharge flash tank. The air outlet pipe is communicated with the top of the boiler periodic blowdown flash tank, a heat exchanger is installed at the top end of the air outlet pipe, an exhaust pipe is arranged above the heat exchanger, and an extension pipe is communicated between the heat exchanger and the exhaust pipe; according to the utility model, the heat exchanger is additionally arranged at the exhaust port of the existing boiler periodic blowdown flash tank and is matched with the recycling mechanism for use, so that the waste heat of boiler blowdown dead steam is effectively recycled, the energy utilization efficiency is improved, the operation cost is reduced, and the dead steam is condensed in the heat exchanger to form high-quality condensed water; and the preheated demineralized water enters the deaerator, so that the steam demand is reduced, the deaerator operates more stably, the phenomenon of white smoke plume caused by direct discharge of dead steam can be eliminated, and the factory environment is improved.

The utility model discloses an integrated intelligent blowdown waste heat recovery device, which relates to the technical field of waste heat recovery and utilization, and comprises a buffer tank, a blowdown heat exchanger and a control box, a sewage inlet of the device is provided with a three-way pipe and two manual valves, during operation, an operation valve is opened, and a service valve is closed; during maintenance, the maintenance valve is opened, and the operation valve is closed; sewage discharged by the steam boiler firstly enters the buffer tank, and the buffer tank is mainly used for stabilizing pressure, reducing impact and protecting the heat exchanger; then the sewage enters the sewage discharge heat exchanger for heat exchange, and the sewage is discharged after heat exchange is completed. Due to the fact that the resistance of the device is small, the sewage side does not need any power device, and normal sewage discharge can be achieved. The plate-type asymmetric efficient heat exchanger is selected as the sewage discharge heat exchanger, 316L stainless steel is adopted as a main body material, and the heat exchanger is high in efficiency, resistant to corrosion, large in sewage side channel, small in sewage resistance, not prone to blockage, free of influence on sewage discharge, free of a water pump on the sewage side, free of influence on boiler operation and free of safety risks.

The invention discloses a chemical boiler blow-down water recycling device, and relates to the technical field of boiler blow-down. The chemical boiler blow-down water recycling device comprises a comprehensive filtering box, the comprehensive filtering box comprises a box body, the box body is fixedly connected to the ground surface, the front face of the box body is communicated with an impurity smashing mechanism, the back face of the box body is communicated with a rotary heat exchange mechanism, and the front face of the rotary heat exchange mechanism is communicated with a sediment clarifying box; the top of the sediment clarifying box communicates with a circulating cleaning mechanism, the left side of the circulating cleaning mechanism communicates with the right side of the impurity smashing mechanism, and the left side of the impurity smashing mechanism is fixedly connected with an electric control box. According to the chemical boiler blow-down water recycling device, by arranging the impurity crushing mechanism, the rotary heat exchange mechanism and the elastic cleaning shaft, boiler sewage impurities adhered to the interior of the blade plate shaft are cleaned, the conversion efficiency of the device on sewage heat is improved, and the blockage condition is prevented.

The utility model relates to the technical field of boiler blow-off and energy recovery, and discloses a novel carbon black tail gas boiler blow-off and energy recovery device which comprises a carbon black tail gas furnace and an arranged fixed blow-off flash tank. The surface type heater is communicated with the periodic blowdown flash tank, and the steam outlet end of the surface type heater is communicated with a spraying type heat exchanger; and the third-stage sedimentation tank is respectively communicated and connected with the periodic blowdown flash tank, the surface type heater and the spraying type heat exchanger, and the liquid outlet end of the third-stage sedimentation tank is communicated with a water tank. According to the novel carbon black tail gas boiler blow-off energy recovery device, after demineralized water is guided into the surface type heater, a carbon black tail gas furnace guides a steam-water mixture generated into the periodic blowdown flash tank, then steam-water separation is conducted, water is discharged into the three-stage sedimentation tank, steam enters the surface type heater to heat the demineralized water, and the demineralized water is discharged into the secondary sedimentation tank; after entering the spraying type heat exchanger, the steam exchanges heat with the spraying water to form water, then the water is discharged into the third-stage sedimentation tank, and the water in the third-stage sedimentation tank is conveyed into the water tank.

The present invention provides a hydrothermal integrated recovery and purification process for boiler wastewater, which relates to the field of boiler wastewater recovery and purification. The hydrothermal integrated recovery and purification process for boiler wastewater includes the following steps: S1: surface wastewater discharge; S2: periodic wastewater discharge; S3: high-temperature vaporization desalination; S4: three-stage filtration; and S5: steam utilization. The boiler wastewater is vaporized using the power plant's existing high-temperature steam source, and crystallization is carried out using the different solubilities of various salts in water and steam. Impurities and salts dissolved in the wastewater are crystallized into solids and then enter a high-temperature desalination purification device. Through three-stage filtration and adsorption, the system desalination rate is above 90%, ensuring that the steam quality meets the requirements. Furthermore, by performing high-temperature desalination and purification on the wastewater, 100% of the heat and medium of the boiler high-temperature wastewater are recovered and converted into high-quality steam for use, achieving the dual benefits of energy conservation and saving desalted water.

The invention discloses a boiler blow-off heat cascade recovery system and method, and the system comprises at least one blow-off flash evaporation unit which is used for receiving boiler blow-off water and carrying out flash evaporation to generate flash evaporation steam and high-temperature concentrated water; the input end of the steam pressurizing unit is connected with the flash steam outlet of the pollution discharge flash unit; the circulating water supply system is connected with the heat users; the heat pump unit is provided with a high-temperature heat source inlet, a high-temperature heat source outlet, a first low-temperature heat source inlet and a first low-temperature heat source outlet, and the high-temperature heat source inlet is connected with the output end of the steam pressurizing unit; the high-temperature side of the heat exchanger is connected with the high-temperature concentrated water outlet of the pollution discharge flash evaporation unit and the high-temperature heat source outlet of the absorption heat pump unit, and the low-temperature side of the heat exchanger is circularly connected with the first low-temperature heat source inlet and the first low-temperature heat source outlet of the heat pump unit. All available heat is recycled in a stepped mode, the consumption of primary steam is directly reduced, and the fuel cost of the boiler is reduced.

The application discloses a boiler automatic blowdown mechanism, which comprises a boiler body, a water inlet pipe is arranged on the upper end of the boiler body, a funnel-shaped bottom is arranged on the lower end of the boiler body, a water outlet pipe is arranged on the lower end of the funnel-shaped bottom, and an electric control valve is arranged on the water outlet pipe; a plurality of support frames are arranged on the slope of the funnel-shaped bottom, a detection chamber is fixed on the support frames, the detection chamber is suspendedly fixed in the boiler body, and the detection chamber is located above the funnel-shaped bottom; when dirt on the side wall of the boiler body is cleaned, the water in the boiler body becomes turbid gradually, the inner detector and the outer detector are set as turbidity detectors, the turbidity of the water can be determined by the loss degree of the emitted signal and the received signal, when the water is very turbid, the inner detector and the outer detector are controlled by the controller to open the electric control valve, and the cleaned sewage is directly discharged to the outside, so that the automatic blowdown function of the boiler is realized.

The utility model provides a waste heat boiler blow-off water cooling and recycling device which comprises a steam-liquid separator connected with a waste heat boiler blow-off water pipe, a filter screen is arranged in the steam-liquid separator, the top of the steam-liquid separator is connected with a steam pipe network, and the bottom of the steam-liquid separator is connected with a water treatment pipeline. The water treatment pipeline comprises a regulating valve connected with a vapor-liquid separator pipeline, and is sequentially provided with a gate valve A, a filter, a check valve and a gate valve B; the water treatment pipeline rear section comprises a cooling section, a monitoring section and a mixing section; the cooling section of the water treatment pipeline is sleeved with a cooling water jacketed pipe A, the end part of the mixing section of the water treatment pipeline is provided with a spray nozzle, and the mixing section of the water treatment pipeline is sleeved with a cooling water jacketed pipe B; the device solves the problem of waste caused by on-site discharge of a large amount of sewage of the waste heat boiler of the device, solves the problems of loud noise and environmental pollution caused by on-site discharge, and achieves the purposes of energy conservation, consumption reduction, safety, environmental protection and improvement of long-period stable operation of the device.

The invention belongs to the technical field of automatic water replenishing for boiler blow-off water tanks, and particularly relates to an automatic water replenishing device for a boiler blow-off water tank, which comprises a fixed tank, a first water inlet is fixedly connected to the upper surface of the fixed tank, a first water outlet is fixedly connected to the upper surface of the fixed tank, a second water inlet is formed in one side of the fixed tank, and a second water outlet is formed in the other side of the fixed tank. A first water outlet is formed in one side of the fixing box, a second water outlet is formed in the other side of the fixing box, a first cavity is formed in the fixing box, a fixing frame is fixedly connected to the interior of the fixing box, a second cavity is formed below the fixing frame, and a heat exchange assembly is arranged on the upper surface of the fixing box. And the heat exchange assembly comprises a plurality of positioning pipes fixedly connected to the lower surface of the fixing frame, the section of each positioning pipe is rectangular, a fixing groove is formed in each positioning pipe, and by arranging the stirring assembly and the heat exchange assembly, the problem that the sewage discharge well can be damaged by high-temperature sewage is solved.

The present application belongs to sewage treatment technical field, disclose a kind of waste heat boiler blowdown water recovery device and method, the device includes by pipeline intercommunication boiler, slurry pump, agitator tank and gas storage tank;Agitator tank includes being located in the agitator tank stirring assembly and for driving stirring assembly motor;Stirring assembly includes first drive rod, first drive rod is hollow structure, first drive rod is connected with the output end of motor, first drive rod is communicated with gas storage tank by swivel joint;Second drive rod, second drive rod is hollow structure, second drive rod is communicated with first drive rod;First stirring rod, stirring rod is hollow structure, the number of first stirring rod is two groups, and respectively with first drive rod and second drive rod communication;Second stirring rod, second stirring rod is hollow structure, second stirring rod is located in first stirring rod, and with first stirring rod communication, second stirring rod is equipped with several spray holes;The present application solves the problem that carbon dioxide and ash water reaction is not sufficient.

The utility model discloses a boiler blow-off steam purification and recovery device, which belongs to the technical field of waste heat recovery and comprises a heat exchanger connected with a boiler, a steam condensation collector, an efficient purification component and a circulating water pump, a first one-way valve is arranged between the heat exchanger and the steam condensation collector, and a second one-way valve is arranged between the heat exchanger and the steam condensation collector. An inlet of the first one-way valve is connected with an outlet of the heat exchanger, an outlet of the first one-way valve is connected with an inlet of the steam condensation collector, the steam condensation collector is communicated with the efficient purification assembly, the efficient purification assembly is communicated with the circulating water pump, and the circulating water pump is connected with a water supplementing opening of a boiler. A pressure reducing valve is arranged between the steam condensation collector and the efficient purification assembly. By means of the structure, the problems that an existing device is difficult to utilize waste heat of water vapor in boiler blow-off and wastes water resources are solved, the energy utilization rate is increased, and green production is promoted.

The utility model relates to a boiler equipment technical field provides a kind of boiler, boiler blowdown pipeline and its anti-impact flow guide pad iron device. The anti-impact flow guide pad iron device of boiler blowdown pipeline is embedded in the mounting groove on one end of blowdown pipeline, and is clamped between adjacent blowdown pipeline, including flow guide pad iron body, protrusion and flow guide rib;Flow guide pad iron body is annular, its outer circumferential side and one axial end can be respectively attached on mounting groove, another axial end is flush with one end of the blowdown pipeline provided with mounting groove;Protrusion is annular protrusion arranged on the inner side of flow guide pad iron body, the side of protrusion adjacent to another axial end is set as inclined surface;Flow guide rib is arranged between inclined surface and the inner side of flow guide pad iron body. The anti-impact flow guide pad iron device provided by the utility model can avoid the problem that local high-frequency scouring and concentrated impact of blowdown medium lead to easy breakdown of components, difficult maintenance and high maintenance cost, realize dispersed flow of medium, protect blowdown system pipeline and prolong service life.

A boiler blowdown device comprises an outer valve and an inner valve which are connected through a pipeline, the outer valve and the inner valve are each connected with a driving device fixed to a rack, each driving device comprises a base, the two sides of each base are rotationally connected with a rotating disc and a support respectively, and an output shaft in the middle of each rotating disc is connected with the outer valve or the inner valve. An input shaft in the middle of the support is connected with a motor output shaft, an adjusting nut is connected to the input shaft in a threaded mode, an adjusting sleeve is arranged on the side, close to the rotary disc, of the adjusting nut and slidably connected with the input shaft, the adjusting sleeve is connected with at least one supporting seat through a connecting rod, and friction plates are arranged on the supporting seats and in friction connection with the rotary disc. A sensor is arranged on the rear side of the rotary disc, when the rotary disc and the support rotate relatively, the pin is continuously jacked up by the support, and the sensor senses jacking-up of the pin. The product is used for boiler blowdown.

The utility model relates to the technical field of smelting equipment, and provides a boiler water discharge treatment device which comprises a steam condensation pool and a boiler blow-off pipe for conveying boiler water to the steam condensation pool, at least one part of the boiler blow-off pipe extends to the inner bottom of the steam condensation pool, and the boiler blow-off pipe is connected with the steam condensation pool. A plurality of pressure equalizing holes are formed in the pipe section of the boiler blow-off pipe located in the steam condensation pool, and at least one part of boiler water is discharged into the steam condensation pool through the pressure equalizing holes. The multiple holes are formed in the part, immersed in condensate water, of the boiler blow-off pipe, boiler water can be discharged into the steam condensation pool through the multiple holes and mixed with the condensate water, the contact volume of the boiler water and the condensate water is increased, heat of the boiler water can be effectively dissipated, and water attack caused by the fact that the heat cannot be rapidly released is avoided.

A waste heat boiler blow-off water tank comprises a rectangular frame, a bottom plate is arranged on the lower portion of the frame, a plurality of side plates are evenly installed on the side faces of the periphery of the frame, a top plate is arranged on the top of the frame, and a tank body used for containing sewage is defined by the frame, the bottom plate, the side plates and the top plate. A water inlet assembly is arranged on the frame, and a drain outlet is formed in the lower end of the bottom plate; the two water inlet pipes with different lengths are arranged, on one hand, water inlet impact can be prevented, and on the other hand, after the sewage surface rises, the short pipe is used for water inlet, and the problem that water inlet is slow or difficult due to too high water pressure can be solved.

The utility model discloses a recovery system utilizing boiler blow-off waste heat, which comprises at least one boiler, a water softener, a water supply tank and a blow-off cooling pool, the boiler is provided with a blow-off flash tank, a first heat exchanger and a second heat exchanger, and a regular blow-off port of the boiler is connected with the first heat exchanger through a first regular blow-off pipeline. A continuous sewage draining port of the boiler is connected with a sewage draining flash tank through a first continuous sewage draining pipeline, a water outlet of the sewage draining flash tank is connected with a second heat exchanger through a second continuous sewage draining pipeline, and a sewage draining outlet of the first heat exchanger and a sewage draining outlet of the second heat exchanger are respectively connected with a sewage draining cooling pool. A water inlet of the first heat exchanger and a water inlet of the second heat exchanger are respectively connected with the water softener through softened water pipelines, and a water outlet of the first heat exchanger and a water outlet of the second heat exchanger are respectively connected with the water supply tank through softened water return pipelines. The waste heat utilization device is simple in structure, solves the problem of incomplete waste heat utilization of sewage water, and solves the problem of water resources.

The invention discloses a resource utilization method for sewage of a tin smelting waste heat boiler, and belongs to the technical field of sewage resource utilization. The method specifically comprises the following steps that (1) blow-off water in the tin smelting waste heat boiler flows into a flash tank through a blow-off water pipe to be subjected to depressurization flash evaporation, steam enters a deaerator through a steam pipeline above the flash tank, and the blow-off water enters a heat exchanger after being discharged from the bottom of the flash tank; (2) demineralized water in a demineralized water tank enters a heat exchanger through a flow guide pipe and exchanges heat with blow-off water from a flash tank in the heat exchanger, the demineralized water is introduced into a deaerator after being heated, and the blow-off water flows into a cooling water pond after being cooled; and (3) the demineralized water in the deoxygenator makes contact with steam from the flash tank and then is rapidly heated and deoxidized, gas enters a spray tower through a pipeline at the top end of the deoxygenator to be cooled, and the deoxidized demineralized water is pumped into a tin smelting waste heat boiler to be used. No waste water or waste gas is discharged in the whole process, and energy conservation, emission reduction and efficient utilization of resources are achieved.