CN111853735A - Industrial flue gas heat recovery boiler based on spiral spraying - Google Patents
Industrial flue gas heat recovery boiler based on spiral spraying Download PDFInfo
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- CN111853735A CN111853735A CN202010682508.XA CN202010682508A CN111853735A CN 111853735 A CN111853735 A CN 111853735A CN 202010682508 A CN202010682508 A CN 202010682508A CN 111853735 A CN111853735 A CN 111853735A
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- flue gas
- water
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- gas pipeline
- pipeline
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/06—Flue or fire tubes; Accessories therefor, e.g. fire-tube inserts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/24—Feed-water heaters, i.e. economisers or like preheaters with fire tubes or flue ways traversing feed-water vessels
Abstract
The invention belongs to the technical field of heat energy recovery boilers, and particularly relates to an industrial flue gas heat recovery boiler based on spiral spraying, which comprises a boiler shell, a sealing partition plate, a flue gas discharge box, a water tank, a heat insulation layer, a motor, a rotating shaft, a fan, a spiral flue gas pipeline and a water outlet pipe; according to the invention, industrial flue gas enters the spiral flue gas pipeline, the temperature of the spiral flue gas pipeline rises, water in the water tank is sprayed out through the water outlet of the water outlet pipe, the sprayed water is in contact with the spiral flue gas pipeline, the water is vaporized, a large amount of water vapor is generated, the heat recovery of the industrial flue gas is realized, a large amount of energy is further saved, and the environmental pollution is reduced; through setting up spiral flue gas pipeline, and then increased the area of contact of industry flue gas with spiral flue gas pipeline, and then increased with the area of contact between the water, and then improved the speed that water turned into vapor in the unit interval, and then improved the efficiency that water turned into vapor.
Description
Technical Field
The invention belongs to the technical field of heat recovery boilers, and particularly relates to an industrial flue gas heat recovery boiler based on spiral spraying.
Background
The boiler is an energy conversion device, the energy input to the boiler comprises chemical energy and electric energy in fuel, the boiler outputs steam, high-temperature water or an organic heat carrier with certain heat energy, the fuel burns to continuously release heat in the combustion device part, high-temperature flue gas generated by combustion transfers the heat to a heating surface of the boiler through heat propagation, the temperature of the high-temperature flue gas is gradually reduced, and the high-temperature flue gas is finally discharged from a chimney.
The flue gas is a main way for wasting the energy of the boiler, and most of the existing boiler flue gas is directly discharged into the air after being simply treated, so a large amount of heat carried in the flue gas is brought into the atmosphere, thereby not only wasting a large amount of energy, but also polluting the environment.
Disclosure of Invention
In order to make up the defects of the prior art, the invention provides an industrial flue gas heat recovery boiler based on spiral spraying. The invention is mainly used for solving the problem of recovering a large amount of heat carried in flue gas.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention provides an industrial flue gas heat recovery boiler based on spiral spraying, which comprises a boiler shell, a sealing partition plate, a flue gas discharge box, a water tank, a heat preservation layer, a motor, a rotating shaft, a fan, a spiral flue gas pipeline and a water outlet pipe, wherein the boiler shell is provided with a plurality of spiral spray holes; the boiler shell is cylindrical; the sealing partition plate is arranged at the lower end in the boiler shell; the sealing partition plate is fixedly connected to the inner cylindrical surface of the boiler shell; the sealing partition plate is used for dividing the boiler shell into a smoke gas cavity and a heat conversion cavity; a flue gas inlet pipeline is arranged on the side wall of the flue gas cavity; the smoke inlet pipeline is communicated with the smoke cavity; the upper top surface of the heat conversion cavity is of a circular truncated cone structure; the upper part of the heat conversion cavity is fixedly connected with the smoke discharge box; a smoke exhaust pipeline is arranged on the side wall of the smoke exhaust cavity; the smoke exhaust pipeline is communicated with the smoke exhaust box; the flue gas discharge box is fixedly connected with the water tank; a water inlet pipe is arranged on the side wall of the water tank; the water inlet pipe is communicated with the water tank; the middle part of the upper surface of the water tank is fixedly connected with the motor fixing seat; the rotating shaft of the motor is fixedly connected with one end of the rotating shaft; the rotating shaft is rotatably connected to the upper top surface of the heat conversion cavity; the other end of the rotating shaft is fixedly connected with the fan; the fan is arranged in the heat conversion cavity; a steam conveying pipe is arranged on the upper top surface of the heat conversion cavity; the steam conveying pipe is communicated with the heat conversion cavity; the water outlet pipes are uniformly arranged in the heat conversion cavity at intervals along the circumferential direction; the sealing end of the water outlet pipe is fixedly connected to the upper surface of the sealing partition plate; the open end of the water outlet pipe penetrates through the smoke discharge box and is communicated with the water tank; a water outlet is arranged on the water outlet pipe; the spiral flue gas pipeline is arranged outside the water outlet pipe; one end of the spiral flue gas pipeline penetrates through the sealing partition plate to be communicated with the flue gas cavity; the other end of the spiral flue gas pipeline is communicated with the flue gas discharge direction; the heat-insulating layer is arranged on the outer surfaces of the boiler shell, the smoke discharge box and the water tank.
When the industrial flue gas recovery device works, industrial flue gas enters the flue gas cavity from the flue gas inlet pipeline, then the industrial flue gas in the flue gas cavity enters the spiral flue gas pipeline, the temperature of the spiral flue gas pipeline rises, finally flue gas in the flue gas discharge box is discharged through the flue gas discharge pipeline, water enters the water tank, then water in the water tank enters the water outlet pipe through the opening end of the water outlet pipe, and then water in the water outlet pipe is sprayed out from the water outlet; by arranging the spiral flue gas pipeline, the contact area between the industrial flue gas and the spiral flue gas pipeline is increased, the contact area between the industrial flue gas and water is increased, the speed of converting water into water vapor in unit time is increased, and the efficiency of converting water into water vapor is improved; in the process, water which is not evaporated in time flows downwards along the outer wall of the spiral flue gas pipeline, so that the time for converting the water into the water vapor is increased, and the yield of the water vapor is increased; water vapor generated by water vaporization is conveyed out along the top surface of the inclined heat conversion cavity through a steam conveying pipe to be utilized, the motor rotating shaft rotates in the process, and then the motor rotating shaft rotates to drive the rotating shaft to rotate, so that the rotating shaft drives the fan to rotate, further the conveying of the water vapor is accelerated, further the concentration of the water vapor in the heat conversion cavity is reduced, and further the conversion of the water vapor is facilitated.
Preferably, two ends of the spiral flue gas pipeline are respectively connected with the sealing partition plate and the lower bottom surface of the flue gas discharge box in a sliding manner; a spring is arranged between the spiral flue gas pipeline and the sealing partition plate; the springs are uniformly arranged around the spiral smoke pipeline at intervals; one end of the spring is fixedly connected to the spiral flue gas pipeline; the other end of the spring is fixedly connected to the sealing partition plate.
During operation, through set up the spring between spiral flue gas pipeline and seal baffle, the spring is compressed under the impact force effect of rivers, and then rotatory flue gas passageway moves down along the axial, and then the spring has played the recoil effect when rivers impact spiral flue gas pipeline, and then has reduced the degree of water bounce-back, and then has increased the area of water direct contact spiral flue gas pipeline, and then has improved the production efficiency of vapor.
The section of the spiral flue gas pipeline is crescent; the crescent concave surface of the spiral flue gas pipeline corresponds to the water outlet.
When the spiral flue gas pipeline water-saving device works, the section of the spiral flue gas pipeline is set to be crescent, the crescent concave surface faces the water outlet, water at the water outlet is sprayed onto the crescent concave surface of the spiral flue gas pipeline, and then the water which is ejected reversely splashes onto the crescent concave surface again, so that the rebound of the water is reduced, the water is not separated from the spiral flue gas pipeline, the water quantity contacted with the spiral flue gas pipeline is increased, the yield of converted water vapor in the spiral flue gas pipeline in unit time is increased, and the conversion efficiency of the water vapor is increased; when the water flow is large, water which is sprayed on the crescent concave surface and is not evaporated rolls downwards along the spiral flue gas pipeline, so that the water is continuously contacted with the spiral flue gas pipeline, the water is continuously evaporated, the yield of water vapor is improved, meanwhile, the spiral flue gas pipeline increases the time for the water to roll downwards, the industrial flue gas is ensured to have enough time for evaporating the water which rolls downwards, and the yield of the water vapor is further increased; the spiral flue gas pipeline with the crescent-shaped cross section is closer to the inner wall of the spiral flue gas pipeline because of the center of the high-temperature gas in the spiral flue gas pipeline, so that the heat transfer efficiency is higher, the spiral flue gas pipeline is guaranteed to have higher temperature, and the efficiency of water vapor is improved.
Preferably, a metal braided rope is arranged in the crescent concave surface of the spiral flue gas pipeline; the metal braided rope is braided by metal wires which are mutually interwoven; and a gap is reserved between the adjacent metal wires.
When the spiral flue gas pipeline water-saving device works, the metal braided rope is arranged in the crescent concave surface of the spiral flue gas pipeline, so that water at the water outlet impacts on the metal braided rope, the water passes through the metal braided rope and then contacts with the spiral flue gas pipeline, the rebound of the water contacting with the spiral flue gas pipeline is reduced, the water passing through the metal braided rope rebounds after contacting with the spiral flue gas pipeline, the rebounded water is blocked by the metal braided rope again, the water is further prevented from leaving the spiral flue gas pipeline, the water quantity contacting with the spiral flue gas pipeline is further increased, and the steam output converted in unit time of the spiral flue gas pipeline in unit time is further increased; the unevaporated water rolls downwards along the spiral flue gas pipeline, and then the unevaporated water is blocked by the metal braided rope, so that the downward rolling speed is reduced, the downward rolling time of the water along the spiral flue gas pipeline is increased, the contact time of the water and the spiral flue gas pipeline is increased, and the yield of water vapor is increased; the heat transfer on the in-process spiral flue gas pipeline is to the metal braided rope, and then has increased the area of contact with water, has further increased vapor output in the unit interval, has further increased the speed that vapor produced.
Preferably, a pressure valve is arranged on one side of the water inlet pipe close to the water tank.
The pressure in the water tank is increased by adjusting the pressure valve, so that the pressure of the water outlet is increased, the atomization degree of water sprayed out of the water outlet is improved, the contact area of water and the spiral flue gas pipeline is increased, and the efficiency of converting heat of industrial flue gas into water vapor is improved; simultaneously, atomized water is in contact with the spiral flue gas pipeline, so that heat can be absorbed more conveniently, the absorption to heat is accelerated, the production of water vapor is accelerated, and the rate of the production of the water vapor is increased.
Preferably, the water outlet is a spiral narrow groove; the water outlet is arranged corresponding to the spiral flue gas pipeline.
During operation, through setting up the delivery port into the heliciform narrow groove to the delivery port corresponds the setting of spiral flue gas pipeline, and then spun water is the heliciform, and then guarantees that whole spiral flue gas pipeline is covered by water, and then has guaranteed the homogeneity of water with the contact of spiral flue gas pipeline, and then prevents that spiral flue gas pipeline from because of long-term local temperature is too high, and then causing the damage of spiral flue gas pipeline, and then has improved the life of boiler.
Preferably, the lower surface of the water tank is convex outwards.
The during operation, high-temperature gas after cooling through spiral flue gas pipeline still has certain temperature when getting into the flue gas emission case, outwards protruding through the water tank lower surface with flue gas emission case top, and then increased the area of contact of flue gas emission case with the water tank, and then the realization preheats the water in the water tank, and then makes the temperature in the water tank rise, and then makes the water that gets into in the heat conversion intracavity vaporize more easily, and then has improved the ability that water is ripe soon and turns into vapor.
The invention has the following beneficial effects:
1. in the invention, industrial flue gas enters the flue gas cavity from the flue gas inlet pipeline; then, industrial flue gas in the flue gas cavity enters the spiral flue gas pipeline, the temperature of the spiral flue gas pipeline rises, flue gas in the flue gas discharge box is discharged through the flue gas exhaust pipeline, water enters the water tank, water in the water tank enters the water outlet pipe through the opening end of the water outlet pipe, water in the water outlet pipe is sprayed out from the water outlet, when the sprayed water is in contact with the spiral flue gas pipeline, a large amount of heat is absorbed by the water to be vaporized, a large amount of water vapor is generated, conversion of the heat of the industrial flue gas is further realized, the heat of the industrial flue gas is recovered by utilizing the water vapor, a large amount of energy is further saved, and meanwhile, environmental pollution is reduced; by arranging the spiral flue gas pipeline, the contact area between the industrial flue gas and the spiral flue gas pipeline is increased, the contact area between the industrial flue gas and water is increased, the speed of converting water into water vapor in unit time is increased, and the efficiency of converting water into water vapor is improved; in the process, water which is not evaporated in time flows downwards along the outer wall of the spiral flue gas pipeline, so that the time for converting the water into the water vapor is increased, and the yield of the water vapor is increased; water vapor generated by water vaporization is conveyed out along the top surface of the inclined heat conversion cavity through a steam conveying pipe to be utilized, the motor rotating shaft rotates in the process, and then the motor rotating shaft rotates to drive the rotating shaft to rotate, so that the rotating shaft drives the fan to rotate, further the conveying of the water vapor is accelerated, further the concentration of the water vapor in the heat conversion cavity is reduced, and further the conversion of the water vapor is facilitated.
2. According to the invention, the spring is arranged between the spiral flue gas pipeline and the sealing partition plate, and is compressed under the action of the impact force of water flow, so that the rotary flue gas channel moves downwards along the axial direction, and the spring plays a role of back flushing when the water flow impacts the spiral flue gas pipeline, so that the water rebounding degree is reduced, the area of the spiral flue gas pipeline which is directly contacted by water is increased, and the generation efficiency of water vapor is improved.
3. According to the spiral flue gas pipeline, the section of the spiral flue gas pipeline is in the crescent shape, the crescent concave surface faces the water outlet, water at the water outlet is sprayed onto the crescent concave surface of the spiral flue gas pipeline, and then the water which is ejected reversely splashes onto the crescent concave surface again, so that the rebound of the water is reduced, the water is not separated from the spiral flue gas pipeline, the water quantity contacted with the spiral flue gas pipeline is increased, the yield of steam converted in the spiral flue gas pipeline in unit time is increased, and the conversion efficiency of the steam is increased; when the water flow is large, water which is sprayed on the crescent concave surface and is not evaporated rolls downwards along the spiral flue gas pipeline, so that the water is continuously contacted with the spiral flue gas pipeline, the water is continuously evaporated, the yield of water vapor is improved, meanwhile, the spiral flue gas pipeline increases the time for the water to roll downwards, the industrial flue gas is ensured to have enough time for evaporating the water which rolls downwards, and the yield of the water vapor is further increased; the spiral flue gas pipeline with the crescent-shaped cross section is closer to the inner wall of the spiral flue gas pipeline because of the center of the high-temperature gas in the spiral flue gas pipeline, so that the heat transfer efficiency is higher, the spiral flue gas pipeline is guaranteed to have higher temperature, and the efficiency of water vapor is improved.
4. According to the invention, the metal braided rope is arranged in the crescent concave surface of the spiral flue gas pipeline, so that water at the water outlet impacts on the metal braided rope, and then the water passes through the metal braided rope and contacts with the spiral flue gas pipeline, so that the rebound of the water contacting with the spiral flue gas pipeline is reduced, meanwhile, the water passing through the metal braided rope rebounds after contacting with the spiral flue gas pipeline, and the rebounded water is blocked by the metal braided rope again, so that the water is further prevented from leaving the spiral flue gas pipeline, the water quantity contacting with the spiral flue gas pipeline is further increased, and the steam yield converted in unit time of the spiral flue gas pipeline in unit time is further increased; the unevaporated water rolls downwards along the spiral flue gas pipeline, and then the unevaporated water is blocked by the metal braided rope, so that the downward rolling speed is reduced, the downward rolling time of the water along the spiral flue gas pipeline is increased, the contact time of the water and the spiral flue gas pipeline is increased, and the yield of water vapor is increased; the heat transfer on the in-process spiral flue gas pipeline is to the metal braided rope, and then has increased the area of contact with water, has further increased vapor output in the unit interval, has further increased the speed that vapor produced.
5. According to the boiler, the water outlet is arranged to be the spiral narrow groove, the water outlet corresponds to the spiral flue gas pipeline, and the sprayed water is spiral, so that the whole spiral flue gas pipeline is covered by water, the contact uniformity of the water and the spiral flue gas pipeline is guaranteed, the spiral flue gas pipeline is prevented from being damaged due to overhigh local temperature for a long time, and the service life of the boiler is prolonged.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a schematic view of the internal structure of a heat recovery boiler according to the present invention;
FIG. 2 is a front view of the heat recovery boiler of the present invention;
FIG. 3 is a schematic view of the spiral flue gas duct of the present invention;
FIG. 4 is a schematic view of the distribution of the springs in the spiral flue gas duct of the present invention;
FIG. 5 is a schematic view of the structure of the water outlet pipe in the present invention;
FIG. 6 is a cross-sectional view of a spiral flue gas duct according to the present invention;
in the figure: boiler shell 1, flue gas chamber 11, heat conversion chamber 12, advance flue gas pipeline 13, discharge flue gas pipeline 14, inlet tube 15, steam delivery pipe 16, seal baffle 2, flue gas discharging box 21, water tank 22, heat preservation 23, spiral flue gas pipeline 3, outlet pipe 4, delivery port 41, motor 24, axis of rotation 25, fan 26, spring 5, metal braided rope 6, pressure valve 7.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 3, an industrial flue gas heat recovery boiler based on spiral spraying comprises a boiler shell 1, a sealing partition plate 2, a flue gas discharge box 21, a water tank 22, a heat insulation layer 23, a motor 24, a rotating shaft 25, a fan 26, a spiral flue gas pipeline 3 and a water outlet pipe 4; the boiler shell 1 is cylindrical; the sealing partition plate 2 is arranged at the lower end in the boiler shell 1; the sealing partition plate 2 is fixedly connected to the inner cylindrical surface of the boiler shell 1; the sealing partition plate 2 is used for dividing the boiler shell 1 into a smoke gas cavity 11 and a heat conversion cavity 12; a flue gas inlet pipeline 13 is arranged on the side wall of the flue gas cavity 11; the smoke inlet pipeline 13 is communicated with the smoke cavity 11; the upper top surface of the heat conversion cavity 12 is of a circular truncated cone structure; the upper part of the heat conversion cavity 12 is fixedly connected with the smoke discharge box 21; a smoke exhaust pipeline 14 is arranged on the side wall of the smoke exhaust cavity; the smoke exhaust pipeline 14 is communicated with the smoke exhaust box 21; the water tank 22 is fixedly connected to the smoke discharge box 21; the side wall of the water tank 22 is provided with a water inlet pipe 15; the water inlet pipe 15 is communicated with the water tank 22; the middle part of the upper surface of the water tank 22 is fixedly connected with the motor 24 fixing seat; the rotating shaft of the motor 24 is fixedly connected with one end of the rotating shaft 25; the rotating shaft 25 is rotatably connected to the upper top surface of the heat conversion cavity 12; the other end of the rotating shaft 25 is fixedly connected with the fan 26; the fan 26 is arranged in the heat conversion cavity 12; a steam conveying pipe 16 is arranged on the upper top surface of the heat conversion cavity 12; the steam conveying pipe 16 is communicated with the heat conversion cavity 12; the water outlet pipes 4 are uniformly arranged in the heat conversion cavity 12 at intervals along the circumferential direction; the sealing end of the water outlet pipe 4 is fixedly connected to the upper surface of the sealing clapboard 2; the open end of the water outlet pipe 4 penetrates through the smoke discharge box 21 to be communicated with the water tank 22; a water outlet 41 is arranged on the water outlet pipe 4; the spiral flue gas pipeline 3 is arranged outside the water outlet pipe 4; one end of the spiral flue gas pipeline 3 penetrates through the sealing partition plate 2 to be communicated with the flue gas cavity 11; the other end of the spiral flue gas pipeline 3 is communicated with the flue gas discharge direction; the heat insulation layer 23 is arranged on the outer surfaces of the boiler shell 1, the smoke discharge box 21 and the water tank 22.
When the device works, industrial flue gas enters the flue gas cavity 11 from the flue gas inlet pipeline 13; then, the industrial flue gas in the flue gas cavity 11 enters the spiral flue gas pipeline 3, the temperature of the spiral flue gas pipeline 3 rises, the flue gas in the flue gas discharge box 21 is discharged through the flue gas discharge pipeline 14, meanwhile, water enters the water tank 22, further, the water in the water tank 22 enters the water outlet pipe 4 through the opening end of the water outlet pipe 4, further, the water in the water outlet pipe 4 is sprayed out from the water outlet 41, when the sprayed water is in contact with the spiral flue gas pipeline 3, a large amount of heat is absorbed by the water to be vaporized, further, a large amount of water vapor is generated, further, the conversion of the heat of the industrial flue gas is realized, and the heat recovery of the industrial flue gas is realized by utilizing the water vapor, further, a large amount of; by arranging the spiral flue gas pipeline 3, the contact area between the industrial flue gas and the spiral flue gas pipeline 3 is increased, the contact area between the industrial flue gas and water is increased, the speed of converting water into water vapor in unit time is increased, and the efficiency of converting water into water vapor is improved; in the process, water which is not evaporated in time flows downwards along the outer wall of the spiral flue gas pipeline 3, so that the time for converting the water into the water vapor is increased, and the yield of the water vapor is increased; water vapor generated by water vaporization is conveyed out along the top surface of the inclined heat conversion cavity 12 through the steam conveying pipe 16 for utilization, the rotating shaft of the in-process motor 24 rotates, then the rotating shaft of the motor 24 rotates to drive the rotating shaft 25 to rotate, and then the rotating shaft 25 drives the fan 26 to rotate, so that the conveying of the water vapor is accelerated, and further the concentration of the water vapor in the heat conversion cavity 12 is reduced, and further the conversion of the water vapor is facilitated.
As shown in fig. 1, 2 and 4, two ends of the spiral flue gas duct 3 are slidably connected with the sealing partition plate 2 and the lower bottom surface of the flue gas discharge box 21 respectively; a spring 5 is arranged between the spiral flue gas pipeline 3 and the sealing partition plate 2; the springs 5 are uniformly arranged around the spiral flue gas pipeline 3 at intervals; one end of the spring 5 is fixedly connected to the spiral flue gas pipeline 3; the other end of the spring 5 is fixedly connected to the sealing partition plate 2.
During operation, through set up spring 5 between spiral flue gas pipeline 3 and seal spacer 2, spring 5 is compressed under the impact force effect of rivers, and then rotatory flue gas passageway moves down along the axial, and then spring 5 has played the recoil effect when rivers impact spiral flue gas pipeline 3, and then has reduced the degree of water bounce-back, and then has increased the area of water direct contact spiral flue gas pipeline 3, and then has improved the production efficiency of vapor.
As shown in fig. 2 and 6, the cross section of the spiral flue gas duct 3 is crescent-shaped; the crescent concave surface of the spiral flue gas pipeline 3 is arranged corresponding to the water outlet 41.
When the spiral flue gas pipeline is in work, the section of the spiral flue gas pipeline 3 is set to be crescent, the crescent concave surface faces the water outlet 41, water is sprayed onto the crescent concave surface of the spiral flue gas pipeline 3 at the water outlet 41, and then the water which is ejected reversely splashes onto the crescent concave surface again, so that the rebound of water is reduced, the water is prevented from leaving the spiral flue gas pipeline 3, the water quantity contacted with the spiral flue gas pipeline 3 is increased, the yield of converted water vapor in the spiral flue gas pipeline 3 in unit time is increased, and the conversion efficiency of the water vapor is increased; when the water flow is large, water which is sprayed on the crescent concave surface and is not evaporated rolls downwards along the spiral flue gas pipeline 3, so that the water is continuously contacted with the spiral flue gas pipeline 3, the water is continuously evaporated, the yield of water vapor is improved, meanwhile, the spiral flue gas pipeline 3 increases the time for the water to roll downwards, the industrial flue gas is ensured to have enough time for evaporating the water which rolls downwards, and the yield of the water vapor is further increased; the spiral flue gas pipeline 3 with the crescent-shaped cross section is closer to the inner wall of the spiral flue gas pipeline 3 because the center of the high-temperature gas in the spiral flue gas pipeline 3 is closer to the inner wall of the spiral flue gas pipeline 3, so that the heat transfer efficiency is quicker, the spiral flue gas pipeline 3 is ensured to have higher temperature, and the efficiency of water vaporization into steam is improved.
As shown in fig. 1, 2 and 6, a metal braided rope 6 is arranged in the crescent concave surface of the spiral flue gas pipeline 3; the metal braided rope 6 is made by braiding metal wires which are mutually interwoven; and a gap is reserved between the adjacent metal wires.
When the spiral flue gas pipeline is in operation, the metal braided rope 6 is arranged in the crescent concave surface of the spiral flue gas pipeline 3, so that water at the water outlet 41 impacts the metal braided rope 6, the water passes through the metal braided rope 6 and then contacts the spiral flue gas pipeline 3, the rebound of the water contacting the spiral flue gas pipeline 3 is reduced, the water passing through the metal braided rope 6 rebounds after contacting the spiral flue gas pipeline 3, the rebounded water is blocked by the metal braided rope 6 again, the water is further prevented from leaving the spiral flue gas pipeline 3, the water quantity contacting the spiral flue gas pipeline 3 is further increased, and the steam yield converted in unit time of the spiral flue gas pipeline 3 in unit time is further increased; the unevaporated water rolls downwards along the spiral flue gas pipeline 3, and then the unevaporated water is blocked by the metal braided rope 6, so that the downward rolling speed is reduced, the time for the water to roll downwards along the spiral flue gas pipeline 3 is increased, the time for the water to contact with the spiral flue gas pipeline 3 is increased, and the yield of water vapor is increased; the heat on the spiral flue gas pipeline 3 of in-process is transferred to on the metal braided rope 6, and then has increased the area of contact with water, has further increased vapor output in the unit interval, has further increased the speed that vapor produced.
As shown in fig. 1 and 2, a pressure valve 7 is disposed on a side of the water inlet pipe 15 close to the water tank 22.
The pressure in the water tank 22 is increased by adjusting the pressure valve 7, so that the pressure of the water outlet 41 is increased, the atomization degree of water sprayed out from the water outlet 41 is improved, the contact area of the water and the spiral flue gas pipeline 3 is increased, and the efficiency of converting the heat of the industrial flue gas into water vapor is improved; simultaneously, atomized water contacts the spiral flue gas pipeline 3 and then is more beneficial to absorbing heat, so that the heat is absorbed more quickly, the production of water vapor is accelerated, and the production rate of the water vapor is increased.
As shown in fig. 5, the water outlet 41 is a spiral narrow groove; the water outlet 41 is arranged corresponding to the spiral flue gas pipeline 3.
During operation, through setting up delivery port 41 into the heliciform narrow groove to delivery port 41 corresponds the setting of spiral flue gas pipeline 3, and then spun water is the heliciform, and then guarantees that whole spiral flue gas pipeline 3 is covered by water, and then has guaranteed the homogeneity of water with the contact of spiral flue gas pipeline 3, and then prevents that spiral flue gas pipeline 3 from being too high because of long-term local temperature, and then causing the damage of spiral flue gas pipeline 3, and then has improved the life of boiler.
As shown in fig. 1 and 2, the lower surface of the water tank 22 is outwardly convex.
The during operation, still have certain temperature when the high-temperature gas after 3 coolings of spiral flue gas pipeline gets into flue gas discharge case 21, it is outside protruding through the water tank 22 lower surface with flue gas discharge case 21 top, and then increased the area of contact of flue gas discharge case 21 with water tank 22, and then the realization preheats the water in the water tank 22, and then make the temperature of water in the water tank 22 rise, and then make the water that gets into in the heat conversion chamber 12 vaporize more easily, and then improved the ability that water is ripe soon to turn into vapor.
When the device works, industrial flue gas enters the flue gas cavity 11 from the flue gas inlet pipeline 13, then the industrial flue gas in the flue gas cavity 11 enters the spiral flue gas pipeline 3, the temperature of the spiral flue gas pipeline 3 rises, finally flue gas in the flue gas discharge box 21 is discharged through the flue gas discharge pipeline 14, meanwhile, water enters the water tank 22, then water in the water tank 22 enters the water outlet pipe 4 through the opening end of the water outlet pipe 4, then water in the water outlet pipe 4 is sprayed out from the water outlet 41, when the sprayed water is contacted with the spiral flue gas pipeline 3, a large amount of heat is absorbed by the water to be vaporized, and a large amount of water vapor is generated, so that the conversion of the heat of the industrial flue gas is realized, and the recovery of the heat of the industrial flue gas is realized by utilizing the water vapor, so that a large amount of; water vapor generated by water vaporization is conveyed out along the top surface of the inclined heat conversion cavity 12 through the steam conveying pipe 16 for utilization, the rotating shaft of the in-process motor 24 rotates, then the rotating shaft of the motor 24 rotates to drive the rotating shaft 25 to rotate, and then the rotating shaft 25 drives the fan 26 to rotate, so that the conveying of the water vapor is accelerated, and further the concentration of the water vapor in the heat conversion cavity 12 is reduced, and further the conversion of the water vapor is facilitated.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (7)
1. The utility model provides an industry flue gas heat recovery boiler based on spiral sprays which characterized in that: comprises a boiler shell (1), a sealing partition plate (2), a smoke discharge box (21), a water tank (22), a heat preservation layer (23), a spiral smoke pipeline (3), a water outlet pipe (4), a motor (24), a rotating shaft (25) and a fan (26); the boiler shell (1) is cylindrical; the lower end in the boiler shell (1) is provided with the sealing partition plate (2); the sealing partition plate (2) is fixedly connected to the inner cylindrical surface of the boiler shell (1); the sealing partition plate (2) is used for dividing the boiler shell (1) into a smoke cavity (11) and a heat conversion cavity (12); a flue gas inlet pipeline (13) is arranged on the side wall of the flue gas cavity (11); the smoke inlet pipeline (13) is communicated with the smoke cavity (11); the upper top surface of the heat conversion cavity (12) is of a round table structure; the upper part of the heat conversion cavity (12) is fixedly connected with the smoke discharge box (21); a smoke exhaust pipeline (14) is arranged on the side wall of the smoke exhaust cavity; the smoke exhaust pipeline (14) is communicated with the smoke exhaust box (21); the flue gas discharge box (21) is fixedly connected with the water tank (22); a water inlet pipe (15) is arranged on the side wall of the water tank (22); the water inlet pipe (15) is communicated with the water tank (22); the middle part of the upper surface of the water tank (22) is fixedly connected with a fixed seat of the motor (24); the rotating shaft of the motor (24) is fixedly connected with one end of the rotating shaft (25); the rotating shaft (25) is rotatably connected to the upper top surface of the heat conversion cavity (12); the other end of the rotating shaft (25) is fixedly connected with the fan (26); the fan (26) is arranged in the heat conversion cavity (12); a steam conveying pipe (16) is arranged on the upper top surface of the heat conversion cavity (12); the steam conveying pipe (16) is communicated with the heat conversion cavity (12); the water outlet pipes (4) are uniformly arranged in the heat conversion cavity (12) at intervals along the circumferential direction; the sealing end of the water outlet pipe (4) is fixedly connected to the upper surface of the sealing partition plate (2); the open end of the water outlet pipe (4) passes through the smoke discharge box (21) and is communicated with the water tank (22); a water outlet (41) is arranged on the water outlet pipe (4); the spiral flue gas pipeline (3) is arranged outside the water outlet pipe (4); one end of the spiral flue gas pipeline (3) penetrates through the sealing partition plate (2) to be communicated with the flue gas cavity (11); the other end of the spiral flue gas pipeline (3) is communicated with the flue gas discharge direction; the heat-insulating layer (23) is arranged on the outer surfaces of the boiler shell (1), the smoke discharge box (21) and the water tank (22).
2. The industrial flue gas heat recovery boiler based on spiral spraying of claim 1, characterized in that: two ends of the spiral flue gas pipeline (3) are respectively connected with the sealing partition plate (2) and the lower bottom surface of the flue gas discharge box (21) in a sliding manner; a spring (5) is arranged between the spiral flue gas pipeline (3) and the sealing partition plate (2); the springs (5) are uniformly arranged around the spiral flue gas pipeline (3) at intervals; one end of the spring (5) is fixedly connected to the spiral smoke pipeline (3); the other end of the spring (5) is fixedly connected to the sealing partition plate (2).
3. The industrial flue gas heat recovery boiler based on spiral spraying of claim 2, characterized in that: the section of the spiral flue gas pipeline (3) is crescent; the crescent concave surface of the spiral flue gas pipeline (3) is arranged corresponding to the water outlet (41).
4. The industrial flue gas heat recovery boiler based on spiral spraying of claim 3, characterized in that: a metal braided rope (6) is arranged in the crescent concave surface of the spiral flue gas pipeline (3); the metal braided rope (6) is braided by metal wires which are mutually interwoven; and a gap is reserved between the adjacent metal wires.
5. The industrial flue gas heat recovery boiler based on spiral spraying of claim 4, characterized in that: one side of the water inlet pipe (15) close to the water tank (22) is provided with a pressure valve (7).
6. The industrial flue gas heat recovery boiler based on spiral spraying of claim 5, characterized in that: the water outlet (41) is a spiral narrow groove; the water outlet (41) is arranged corresponding to the spiral flue gas pipeline (3).
7. The industrial flue gas heat recovery boiler based on spiral spraying of claim 6, characterized in that: the lower surface of the water tank (22) is convex outwards.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010682508.XA CN111853735B (en) | 2020-07-15 | 2020-07-15 | Industrial flue gas heat recovery boiler based on spiral spraying |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010682508.XA CN111853735B (en) | 2020-07-15 | 2020-07-15 | Industrial flue gas heat recovery boiler based on spiral spraying |
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| CN111853735B CN111853735B (en) | 2022-02-15 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203744213U (en) * | 2014-04-08 | 2014-07-30 | 中国机械工业安装总公司德阳安装工程公司 | Low-heat radiation boiler |
| CN207778401U (en) * | 2017-12-21 | 2018-08-28 | 河北旭阳工程设计有限公司 | A kind of high-efficiency environment friendly residual heat insulation power economized boiler |
| CN208998107U (en) * | 2018-07-19 | 2019-06-18 | 亿利智慧能源科技(安徽)有限公司 | A kind of residual heat from boiler fume generator |
| CN210345418U (en) * | 2019-07-10 | 2020-04-17 | 沈阳精工天下五金工具有限公司 | Steam generator |
-
2020
- 2020-07-15 CN CN202010682508.XA patent/CN111853735B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203744213U (en) * | 2014-04-08 | 2014-07-30 | 中国机械工业安装总公司德阳安装工程公司 | Low-heat radiation boiler |
| CN207778401U (en) * | 2017-12-21 | 2018-08-28 | 河北旭阳工程设计有限公司 | A kind of high-efficiency environment friendly residual heat insulation power economized boiler |
| CN208998107U (en) * | 2018-07-19 | 2019-06-18 | 亿利智慧能源科技(安徽)有限公司 | A kind of residual heat from boiler fume generator |
| CN210345418U (en) * | 2019-07-10 | 2020-04-17 | 沈阳精工天下五金工具有限公司 | Steam generator |
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| CN111853735B (en) | 2022-02-15 |
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Effective date of registration: 20220120 Address after: 064400 Mu Chang Kou Zhen song Ting Cun, Qian'an City, Tangshan City, Hebei Province Applicant after: Qian'an Shoujia Building Materials Co.,Ltd. Address before: 237400 Yanzui formation, Hanying village, Panji Township, Huoqiu County, Lu'an City, Anhui Province Applicant before: Wang Houlian |
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