230results about "Boiler drums/headers" patented technology

A solid electric thermal storage superheated steam output system is provided. Through a high-temperature air duct, a superheated steam heat exchanger, a saturated steam heat exchanger and a water preheating heat exchanger, heat exchange is performed under the drive of a variable-frequency fan to finally generate superheated steam for use of a heat consumer. The water preheating heat exchanger is connected to a preheating steam tank, heat generated after the superheated steam heat exchanger and the saturated steam heat exchanger exchange heat is used to generate low-temperature steam for thermal deoxygenation of a deaerator, while water flows into a deaerator water tank through an overflow pipe. A superheated steam unit is a structural combination including a steam drum as a core, sets of superheated steam heat exchangers, saturated steam heat exchangers, water preheating heat exchangers and corresponding accessories. An overall combined superheated steam system includes multiple superheated steam units.

The invention belongs to the technical field of phase change energy storage heat exchange, and particularly relates to a phase change energy storage recycling device based on surplus electric quantity of a nuclear power station and a thermoelectric conversion system. The contradiction between electric energy supply and demand mismatch is a key problem in the industry. At present, methods such as transformation and capacity expansion of power generation equipment are adopted, consumption is large, and the energy utilization rate is low. Therefore, surplus electric quantity in the low-load period is converted into heat energy to be stored, and then the heat energy is converted into electric energy to be used in the peak-load period. The adopted phase change energy storage material (Al-Si-Fe-Sn) has the advantages of being large in heat conductivity coefficient, high in latent heat density, low in material cost, efficient, energy-saving, environment-friendly and the like, heat energy at the temperatures of about 200 DEG C, about 500 DEG C, about 600 DEG C or above and the like can be continuously absorbed according to multiple phase change points of the phase change material, and the high, medium and low heat energy is integrally stored for efficient utilization; therefore, the problem that the energy utilization rate is low due to mismatching and non-uniformity of energy supply on time or places is solved, and the heat utilization rate of the whole system is improved to the maximum extent.

The invention discloses a double-medium hanging pipe structure for a deep peak shaving tower type boiler, belongs to the technical field of coal-fired power generation boilers, and aims to solve the problems that under the working condition of long-time wet operation, the cooling capacity of an existing hanging pipe structure is seriously insufficient, the risk of pipe explosion and shutdown exists, and safe and stable operation of a unit is seriously affected. The device comprises a separator, a separator outlet connecting pipe, a separator inlet connecting pipe, a superheater, a water cooling wall and a plurality of in-furnace hanging pipe panels, the water cooling wall is communicated with the in-furnace hanging pipe panels, and the in-furnace hanging pipe panels are communicated with the separator through the separator inlet connecting pipe. The separator is communicated with the superheater through a separator outlet connecting pipe, steam-water double media discharged by the water cooling wall pass through a plurality of in-furnace hanging pipe panels from bottom to top, then enter the separator and are subjected to steam-water separation in the separator, and then steam media enter the superheater. The hanging pipe structure is mainly used as the hanging pipe structure of the deep peak shaving tower type boiler.

According to the header system of the coal-fired boiler and the coal-fired boiler, the thermal stress of the header can be improved, and the service life of the header can be prolonged. The header system of the coal-fired boiler comprises second headers, at least one first header and a plurality of sets of pipe rows, one end of each set of pipe rows penetrates through a boiler wall of the coal-fired boiler, and the other end of each set of pipe rows is connected with one second header; and the first header is connected with the plurality of second headers.

The utility model relates to a device for preventing a low-pressure evaporator of a waste heat boiler from being damaged due to fluid acceleration, which comprises an upper header, a finned tube and an ascending tube which are arranged in a steam-water separation area of the low-pressure evaporator of the waste heat boiler, and is characterized in that a fixed hanging lug plate is arranged in the steam-water separation area of the low-pressure evaporator of the waste heat boiler; the upper collecting box, the finned tube and the ascending tube are welded into a whole through the fixed hanging lug plate, so that a first rigid bending-resistant, deformation-resistant and displacement-resistant structure is formed; and the fixed hanging lug plate is fixedly connected to the boiler wall of the waste heat boiler to form a second rigid bending-resistant, deformation-resistant and displacement-resistant structure, namely, a dual-rigid bending-resistant, deformation-resistant and displacement-resistant structure. The device can solve the problem of leakage caused by damage of the waste heat boiler arranged on the 9F combined cycle unit, and has the substantive characteristics and technical progress that the vibration resistance, deformation prevention and leakage prevention capabilities of the high-pressure evaporator and the low-pressure evaporator of the waste heat boiler arranged on the combined cycle unit are improved, and pipe explosion and leakage caused by fluid acceleration damage of the low-pressure evaporator of the waste heat boiler are prevented.

The utility model discloses a furnace gas waste heat recycling system of a calcium carbide furnace. The furnace gas waste heat recycling system comprises a vaporization flue, a first steam pocket, a waste heat boiler, a dust remover, a first economizer, a softened water tank and a deaerator, an exhaust port of the calcium carbide furnace is communicated with an air inlet of the waste heat boiler through a vaporization flue, an exhaust port of the waste heat boiler is communicated with an air inlet of the dust remover through a first pipeline, an exhaust port of the dust remover is communicated with an air inlet of the first economizer, and an exhaust pipeline is communicated to an exhaust port of the first economizer; an outlet of the softened water tank is communicated with an inlet of a deaerator, an outlet of the deaerator is communicated with a water inlet of a first steam pocket through a second pipeline, the middle of the second pipeline is communicated with a water inlet of a first economizer, and a water outlet of the first economizer is communicated with a water inlet of a second economizer of the waste heat boiler; a water outlet of the first steam pocket is communicated with a water inlet of the vaporization flue through a third pipeline, a circulating water pump is arranged on the third pipeline, and a steam outlet of the vaporization flue is communicated with a gas inlet of the first steam pocket.

The utility model provides an independent circulation pipeline evaporator which comprises an ascending pipe connected to a steam pocket; the first evaporation screen is communicated with the ascending pipe through a first ascending communicating pipe, the first evaporation screen comprises a plurality of first pipe pieces, and the first pipe pieces are arranged on two flues in parallel; each first duct piece is arranged in a bow shape in the vertical direction, so that the heating area of each first duct piece is increased, and meanwhile, a steam soot blower can penetrate through each first duct piece and carry out decoking and soot cleaning on each first duct piece; the first descending communicating pipe is connected between the first evaporation screen and a descending pipe, and the descending pipe is connected to the bottom of the steam pocket and used for conveying water in the steam pocket to the first descending communicating pipe and then conveying the water to the first evaporation screen. The problems of overtemperature and high-temperature corrosion of the superheater mentioned in the background technology are solved.

The utility model relates to the technical field of phase change boilers, in particular to a high-voltage electrode phase change boiler which comprises a heat exchanger and a high-voltage electrode assembly which are arranged on the inner side of a boiler shell. The heat exchanger is arranged on the upper portion of the boiler shell, the high-voltage electrode assembly comprises a phase electrode, a zero electrode and a lifting mechanism, the phase electrode is fixedly installed at the bottom end of the boiler shell, one end of the phase electrode is connected with high voltage, the other end of the phase electrode extends upwards into the inner side of the boiler shell, and the zero electrode is arranged on the upper side of the phase electrode and connected with the lifting mechanism. The lifting mechanism is used for carrying the zero electrode so as to adjust the distance between the zero electrode and the phase electrode; a flame heating mode of a traditional phase-change boiler is improved into a high-voltage electrode assembly heating mode, fuel combustion energy is replaced with electric energy, the electric energy is completely converted into heat through the electrode heating mode, zero emission is achieved, no pollution such as noise, fuel smoke and coal ash exists during equipment operation, and the phase-change boiler has the advantages of being clean in energy, environmentally friendly and capable of saving cost.

A fully premixed combustion low-nitrogen steam boiler relates to the technical field of steam boilers and comprises a box body and a plurality of standardized boiler modules sequentially arranged along a mounting cavity of the box body. The boiler module is composed of a boiler body, a full premixing burner, a negative pressure steam pocket and a symmetrical tubular heat exchanger. Spiral grooves are formed in the walls of the furnace body combustion cavities and communicated with the water heating cavities, so that water flow forms a thin-layer water film to strengthen heat exchange and prevent local dry burning, and the adjacent furnace body combustion cavities are communicated to realize smoke cascade transmission; hot air flow spirally circulates to prolong the heat exchange time, the full-premixing combustor is combined with the impeller to diffuse fuel gas, the metal fiber net forms low-temperature diffusion flames, and generation of nitric oxide is remarkably inhibited; the negative-pressure steam pocket accelerates evaporation in a negative-pressure environment, so that the steam production rate is increased; flue gas forms a U-shaped loop through the flow guide structure and flows through the tubular heat exchanger. The modular design supports on-demand combination and later expansion, the overall structure is high in heat efficiency, low in emission and safe and reliable in operation, and the multi-working-condition load requirement is met.

A control method for a system in a "steam maintenance mode" after the MFT of a secondary reheat unit boiler comprises the following steps: (1) clarifying the control target of the "steam maintenance mode"; (2) setting the judgment conditions for automatic triggering and automatic exit of the steam maintenance mode; (3) clearly explaining the automatic control of the high, medium and low pressure three-stage bypass and its desuperheating water in the "steam maintenance mode"; (4) detailing the control logic of the feed water pump and the induced draft fan in the "steam maintenance mode"; (5) further explaining the pressure control of the auxiliary steam header and the action of the steam trap group in the steam maintenance mode; (6) giving priority to the supply of the shaft seal in the "steam maintenance mode", while taking into account the control of the condensate system and the auxiliary steam system. The entire control process is transformed from extensive manual control to precise automatic adjustment. It is of great significance to achieve energy saving and consumption reduction of thermal power units, rapid recovery from accident shutdowns, and improvement of the automation level of units.

The present invention discloses a steam generator, which belongs to the field of heat storage, and includes: an energy storage tank, a heat exchange device, and a steam generating device; the steam generating device includes a first water inlet, a second water inlet, and a steam port. The beneficial effects of the present invention are: the lower heat exchange device and the upper steam generating device are innovatively designed, and the functions of multiple components such as the heat exchanger, steam generator, steam-water separator, desuperheater, and steam drum in the prior art are integrated into one, reducing the footprint of the system, shortening the overall pipeline connection length, reducing pipe joints, and reducing costs; at the same time, the lower heat exchange device is used for primary heat exchange, the upper steam generating device is used for secondary heating, and the steam-water separation process and the temperature reduction and pressurization process are realized through the jacket, so as to prevent the system from over-temperature and over-pressure, improve safety performance, and stabilize steam output; it is suitable for the field of small and medium-sized steam for heat storage, and is conducive to standardized production and large-scale promotion.

The invention relates to the technical field of boilers, in particular to a boiler header which comprises a body, the body comprises at least two barrels, and multi-screen tube rows are arranged in the extending direction of any barrel at equal intervals. In a factory, the multi-screen tube row is welded to the barrel in advance to form a split structure of the header, then the split structure is transported to a construction site, the barrel of the split structure is welded on the construction site, and finally manufacturing of the header is completed. The split structures of the header are transported to the construction site, compared with an overall transportation mode of the header, the split structures are small in size, the split structures can be fully fixed, impact force of jolting on weld joints in the transportation process is small, the weld joints are not prone to cracking, the split structures are convenient to assemble and disassemble, and the assembly and disassembly are convenient. Therefore, the transportation difficulty is greatly reduced.

The invention relates to the technical field of gas-fired boiler steam drums, and discloses a gas-fired boiler low-pressure steam drum deaerator emptying control device which comprises two oxygen content monitoring devices, namely a first oxygen content monitoring device and a second oxygen content monitoring device, the first oxygen content monitoring device is installed at an outlet of a deaerator emptying pipeline, and the second oxygen content monitoring device is installed at an outlet of a deaerator emptying pipeline. The second oxygen content monitoring device is mounted at an inlet of an emptying pipeline of the deaerator; the control device further comprises a flow monitoring device installed in the emptying pipeline of the deaerator, an emptying door opening adjusting device installed on the emptying door and a controller. The controller receives numerical values measured by the first oxygen content monitoring device, the second oxygen content monitoring device and the flow monitoring device, calculates the numerical values and then controls the emptying door opening degree adjusting device to adjust the opening degree of the emptying door in real time; according to the method, the opening degree of the emptying door is adjusted in real time by combining actual parameter conditions in the emptying pipeline, and the method has the advantages that the emptying amount is set more accurately and reasonably, unnecessary emission is reduced, and resources are saved.

The invention belongs to the technical field of heat exchangers, and discloses a double-function quenching heat exchanger, a tube pass circulates a heat medium, the double-function quenching heat exchanger comprises a barrel, an inlet header, an outlet header and an adjusting assembly, and the adjusting assembly comprises a first adjusting tube and a second adjusting tube. When heat exchange between a saturated medium and a heat medium is carried out, the saturated medium evenly enters the barrel through the inlet header and evenly flows out through the outlet header, and heat exchange between the saturated medium and the heat medium is completed in the barrel. When heat exchange between an unsaturated medium and a heat medium is carried out, the first adjusting pipe and the second adjusting pipe are rotated, the pipe wall of the first adjusting pipe blocks the first inlet and the first outlet at the moment, the unsaturated medium entering the barrel from the unsaturated inlet does not go through the inlet header any more, and the pipe wall of the second adjusting pipe blocks the second inlet and the second outlet. The unsaturated medium after heat exchange does not go out of the outlet header, so that short circuit at the inlet header and the outlet header is avoided, and the heat exchange efficiency of the unsaturated medium is improved.

The invention discloses a boiler drum waste water recovery system, comprising a waste water tank, one end of which is connected to the drum, the other end of which is connected to a waste water cooler through a waste water pipe, the outlet end of the waste water cooler is connected to a ditch through a pipeline, a first stop valve, a pneumatic interlock regulating valve and a second stop valve are sequentially arranged on the waste water pipe, a first pipe is connected to the waste water pipe behind the pneumatic interlock regulating valve, the other end of the first pipe is connected to a pneumatic pump, the device air is delivered to the pneumatic pump through an air intake pipe, a second pipe is connected above the pneumatic pump, and the other end of the second pipe is connected to an external condensate pipe network through an external condensate delivery pipeline. The first pipe of the invention is led out from behind the pneumatic interlock regulating valve, which ensures that the waste water flashes to recover steam on the one hand, and avoids the situation of cross pressure in the pipeline on the other hand; the waste water is pressurized by the pneumatic pump, and the waste water is recovered, so as to save production costs and reduce resource waste.

A heat recovery steam generator (HRSG) includes a base and a top platform assembly disposed on the base. The top platform assembly includes a first top platform auxiliary module having a first rectangular frame in which a steam manifold is disposed, a second top platform auxiliary module having a second rectangular frame in which a high pressure (HP) drum is disposed, and a third top platform auxiliary module having a third rectangular frame in which a low pressure (LP) drum and an intermediate pressure (IP) drum are disposed. Each top platform auxiliary module may be pre-assembled on the ground prior to be raised to elevation for installed on the base.

A waste heat boiler header easy to assemble comprises a boiler header body, supporting plates arranged on the two sides of the boiler header body and heat preservation plates arranged on the supporting plates, and further comprises an assembling assembly used for connecting the boiler header body and the supporting plates, and the assembling assembly comprises a pipe body arranged on the boiler header body; one end of the connecting piece is connected with the supporting plate; one end of the clamping piece is connected with the connecting piece, and the other end is connected with the pipe body; wherein an adjustable part is arranged between the clamping part and the connecting part, and the clamping part can move on the connecting part and is fixed through the adjustable part. The boiler header has the beneficial effects that the boiler header body and the supporting plate are connected, assembled and adjusted more flexibly, simply and conveniently through the assembly assembly comprising the combination of the connecting piece, the clamping piece and the adjustable piece, the assembly difficulty is reduced, the installation time is shortened, and the working efficiency is improved.

The utility model provides a steam generator and an air fryer, and relates to the technical field of cooking equipment. The steam generator comprises a heating bin which comprises a steam generating cavity and a water inlet; the heating element is connected with the heating bin; the heat conduction piece is connected with the heating bin and arranged in the heating bin; the switch assembly is connected with the water inlet; the triggering assembly is connected with the heat conduction part and can execute triggering action according to the temperature of the heat conduction part, and the triggering action is used for triggering the switch assembly to open the water inlet.

A heat recovery steam generator (HRSG) includes a base and a top platform assembly disposed on the base. The top platform assembly includes a first top platform auxiliary module having a first rectangular frame in which a steam manifold is disposed, a second top platform auxiliary module having a second rectangular frame in which a high pressure (HP) drum is disposed, and a third top platform auxiliary module having a third rectangular frame in which a low pressure (LP) drum and an intermediate pressure (IP) drum are disposed. Each top platform auxiliary module may be pre-assembled on the ground prior to be raised to elevation for installed on the base.

The utility model relates to the technical field of boiler use condition monitoring, and discloses a boiler use condition matched monitoring system which comprises a centralized control unit, a steam pocket monitoring unit and a hearth monitoring unit. The centralized control unit, the steam drum monitoring unit and the hearth monitoring unit work cooperatively, and comprehensive monitoring of the use condition of the boiler is achieved. And through a display of the centralized control unit, a worker can check the working states of the steam pocket and the hearth in real time and adjust operation parameters in time, so that safe and stable operation of the boiler is ensured. The boiler use condition matching monitoring system has a comprehensive monitoring function, a clear image capturing capability and stable working environment adaptability, effectively solves the problems of technical lag and insufficient performance of the existing boiler monitoring system, improves the safe and stable operation level of the boiler, reduces the overhaul and maintenance cost, and improves the working efficiency of the boiler. The working efficiency is improved, the labor intensity is reduced, and important practical value and wide application prospect are achieved.

This invention discloses a waste heat steam boiler system, including a steam drum and a heating boiler shell. The steam drum is equipped with a main steam outlet and a water inlet. The heating boiler shell contains a cylindrical heating chamber. Several parallel and spaced waste heat flue gas heat exchange tubes pass through the heating chamber laterally, forming a flue gas heat exchange tube array. The lower part of the inner cavity of the steam drum is connected to the lower end of the heating chamber through a downcomer, and the upper end of the heating chamber is connected to the inner cavity of the steam drum through a riser. The heating chamber is equipped with a labyrinthine steam dissipation structure, thereby improving the overall heat utilization efficiency of high-temperature flue gas.

The utility model relates to the technical field of boilers, in particular to a four-mode boiler structure which comprises a boiler body, a smoke outlet and an ash outlet. A smoke outlet is welded to the middle of the top end of the boiler body, and ash discharging openings are formed in the middles of the left side and the right side of the boiler body. The furnace doors are mounted at the lower parts of the left and right sides of the boiler main body and are positioned at the two ends of the hearth; the gas pipes are welded to the middle positions of the inner walls of the front end and the rear end of the boiler body, and a plurality of gas nozzles are evenly welded to the gas pipes in a transverse interval arrangement mode. Through the improvement on the structure, the boiler has the advantages of hearth dry burning prevention function, effective improvement of the service life of the hearth, high heat energy utilization rate, higher practical performance, higher practical value and the like, so that the problems and defects in the prior art and equipment are effectively solved and overcome.

The invention relates to the technical field of coking, and discloses a coke oven flue gas waste heat recovery boiler and a waste heat boiler acid dew corrosion prevention method, the coke oven flue gas waste heat recovery boiler comprises a steam pocket, a circulating pump and fin heat exchange tubes; the steam pocket is connected with the fin heat exchange tube and is also connected with the circulating pump; and the circulating pump is also connected with the fin heat exchange tube. A natural circulation mode of the boiler is changed into forced circulation, and uniform circulation of the boiler is guaranteed, so that stable temperature of the pipe wall is guaranteed, and acid dew corrosion and ash deposition are avoided.

The invention particularly relates to a modularized detachable flue gas heat exchanger applied to a low-pressure boiler, and aims to solve the problems that an existing fixed heat exchanger is difficult to clean and maintain and shut down due to faults. The low-pressure boiler comprises a deoxidizing pump, a water feeding pump, a forced circulation pump, a deaerator, a periodic blowdown flash tank, a sampling device, a dosing device, a steam pocket and a modularized detachable flue gas heat exchanger. In order to ensure the continuity of heat energy recovery, a set of forced circulation system waste heat boiler is additionally arranged in a bypass flue of the low-pressure boiler and serves as a standby of a main flue waste heat boiler. The forced circulation system waste heat boiler, namely the modularized detachable flue gas heat exchanger, mainly comprises a flue gas inlet pipe, an ascending distribution pipe, a descending distribution pipe, a plurality of detachably connected module distribution boxes and a flue gas outlet pipe. Compared with a fixed heat exchanger, the invention has the following effects: (1) the heat exchange efficiency is obviously improved, and the heat loss is effectively reduced; the heat exchange unit can be conveniently and independently cleaned, and downtime is shortened; only the fault module needs to be replaced or maintained during fault, maintenance cost is reduced, and the service life of equipment is prolonged. And (5) a user can flexibly adjust the temperature according to process requirements and freely select heat exchange module configuration to ensure that the flue gas temperature reaches the standard and meets various production requirements.

The application discloses a kind of gas steam boiler tail gas waste heat recycling regulation and control system, it includes: low-pressure steam pocket;Water supply pump is used to water supplement in low-pressure steam pocket;Flue gas temperature monitor is used to monitor the flue gas temperature value of the tail of boiler in real time;Water level monitor is used to monitor the water level value in low-pressure steam pocket in real time;Hot water heater is connected between water supply pump and low-pressure steam pocket, for using the flue gas waste heat of the tail of boiler to preheat water body before entering low-pressure steam pocket;Water temperature monitor is used to monitor the water body temperature value at hot water heater outlet in real time;Control unit is used to comprehensively regulate and control the water body flow that is preheated by hot water heater according to the data collected by instrument.The water supplement of low-pressure steam pocket is heated by hot water heater before being sent into low-pressure steam pocket to continue to carry out steam-water circulation, which can reduce the flue gas temperature of boiler, improve the thermal efficiency of boiler, and the water body flow that needs to be preheated can also be accurately regulated and controlled by control unit using relevant data.

The utility model discloses a wall-mounted connecting mechanism of a steam-water separator in a boiler barrel. The wall-mounted connecting mechanism solves the problem of how to conveniently fix and adjust the steam-water separator. A saturated steam inlet pipe flange plate (3) is arranged at the inner side end of a saturated steam inlet pipe (2), an arc-shaped step (6) is arranged on the vertical face of the left side of the lower portion of the saturated steam inlet pipe flange plate (3), and a steam-water mixed steam inlet flange plate (5) is connected with the saturated steam inlet pipe flange plate (3) in an abutting mode. An arc-shaped step (6) arranged on the lower portion of the steam-water mixed steam inlet flange plate (5) and the vertical face of the left side of the lower portion of the saturated steam inlet pipe flange plate (3) is arranged in an arc-shaped tray (7), and a lower connecting bolt (8) is connected among the left side wall of the arc-shaped tray (7), the arc-shaped step (6) and the lower portion of the steam-water mixed steam inlet flange plate (5) in a penetrating mode. The device is simple in structure and convenient to install and maintain.

The utility model discloses a novel gas turbine waste heat boiler header which comprises a header body, the header body is divided into a header left barrel and a header right barrel through a middle partition plate, a high-pressure cavity and a medium-pressure cavity which are independent are formed, and the high-pressure cavity and the medium-pressure cavity are connected with heating surface tube bundles of a high-pressure economizer and a medium-pressure economizer respectively. The left header barrel and the right header barrel are located on the same axis. The header structure is shared by the high-pressure economizer and the medium-pressure economizer, double-system splicing is achieved by segmenting the header and using the middle partition plate, traditional modular limitation is broken through, the transverse row number of the heating surface of the medium-pressure economizer can be dynamically adjusted, and therefore the approaching point temperature is accurately controlled, and the waste heat utilization efficiency is improved.

The invention provides a device and method for preparing heat supply steam through boiler continuously-discharged sewage, the device comprises a heat exchange vaporizer, the heat exchange vaporizer is provided with a sewage inlet, a superheated steam inlet and a continuously-discharged steam outlet, the sewage inlet is connected with a surface sewage outlet of a boiler drum through a sewage pump, and the superheated steam inlet is connected with a superheated steam supply pipeline; a steam inlet of the demister is connected with the steam exhaust outlet through a pipeline; a steam inlet of the dust remover is connected with a steam outlet of the demister through a pipeline, the dust remover comprises a plurality of slender cyclone cylinders which are arranged in parallel, a steam inlet is formed in the side wall of each cyclone cylinder, a steam outlet is formed in the top of each cyclone cylinder, and a drain outlet is formed in the bottom of each cyclone cylinder; a steam inlet of the filter is connected with a steam outlet of the dust remover, and a steam outlet is connected with a heat supply steam pipeline. The continuous exhaust steam after vaporization is efficiently filtered and purified, and after three-stage filtration and purification, the three-stage trapping efficiency of crystal salt particles and fog drops is larger than 99%.

The utility model belongs to the technical field of waste heat recycling, and particularly relates to a steam waste heat boiler which comprises a supporting frame, a boiler body, a top boiler barrel, a plurality of upper boiler barrels, a plurality of pairs of U-shaped rods, a plurality of lower boiler barrels, a plurality of pairs of elastic supporting pieces, a slag discharging hopper, a plurality of conveying pipes, a plurality of heat exchange pipes and a plurality of lower conveying pipes. The two ends of the upper boiler barrel are hung below the two second cross beams respectively through the U-shaped rods, and then the two ends of the lower boiler barrel are flexibly supported on the two third cross beams respectively through the elastic supporting pieces, so that the boiler body is fixed and supported; by means of the characteristics that the U-shaped rod allows the upper boiler barrel to slightly displace during thermal expansion and cold contraction and the elastic supporting piece absorbs displacement of the lower boiler barrel and buffers stress, thermal expansion and cold contraction caused by temperature changes in the operation process of the boiler can be adapted, and therefore damage of displacement and stress to the boiler structure is dispersed and reduced; and the stability and the safety of the whole structure of the boiler are ensured.

The invention discloses an electromagnetic induction steam boiler, comprising a base, a header and a drum, wherein the drum is located in the upper middle part of the header, and the header is fixedly provided with a plurality of rows of ascending pipes and descending pipes along the length direction, wherein the upper ends of the ascending pipes and descending pipes are bent inwards and communicated with the drum, and the ascending pipes and descending pipes are arranged in a staggered manner, and an electric induction heater is installed on the outside of the ascending pipe, and the electric induction heater comprises an induction coil, which is an arc-shaped structure with one side open, and a steam-water separator is installed on the upper part of the inner cavity of the drum, and water level gauges are respectively installed at high and low positions on both sides of the drum, and a steam outlet is provided in the upper middle part of the drum. Electric induction heating adopts a non-contact method, and generates eddy current electric heating on the metal tube wall through the alternating magnetic field generated by high-frequency electricity, and the medium in the heating tube is heated, which is not only safe to operate and convenient to repair, but also can greatly increase the capacity of the electric heating boiler, and the arc-shaped coil structure of the electric induction heater is convenient for disassembly and assembly during maintenance.