CN115875950B - Waste heat recovery equipment and waste heat recovery method for tube bundle dryer - Google Patents
Waste heat recovery equipment and waste heat recovery method for tube bundle dryer Download PDFInfo
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- CN115875950B CN115875950B CN202211369497.5A CN202211369497A CN115875950B CN 115875950 B CN115875950 B CN 115875950B CN 202211369497 A CN202211369497 A CN 202211369497A CN 115875950 B CN115875950 B CN 115875950B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
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Abstract
The invention belongs to the technical field of waste heat recovery devices, in particular to waste heat recovery equipment and a waste heat recovery method of a tube bundle dryer, which aim at the problems that waste heat recovery is single, waste heat gas cannot be fully utilized, dust and impurities contained in grains adhere to the inner wall of a hot gas pipeline and a large amount of electric energy is required to be consumed in the prior art, and currently propose the following scheme, which comprises the following steps: the grain preheating device comprises a tube bundle dryer, a heat energy conversion structure, a water storage tank, a spray tower and a drying structure, wherein the tube bundle dryer is communicated with the heat energy conversion structure through a first heat preservation Wen Guanxiang, and the heat energy conversion structure is communicated with the water storage tank through a second heat preservation pipe.
Description
Technical Field
The invention relates to the technical field of waste heat recovery devices, in particular to waste heat recovery equipment and a waste heat recovery method of a tube bundle dryer.
Background
Tube bundle dryers are widely used in modern drying processes, and are commonly used for drying loose materials in the industries of grain, food, feed, chemical industry, light industry, ceramics, environmental protection, and the like. The traditional tube bundle dryer comprises a horizontal cylindrical shell, a tube bundle rotor is arranged in the inner cavity of the shell, a rotor shaft is arranged in the center of the tube bundle rotor, sealing heads are respectively arranged at two ends of the tube bundle rotor, the rotor shaft respectively extends out of the centers of the sealing heads, air inlet regulating air doors are respectively arranged on the two sealing heads, and a tail gas outlet is formed in the top of the shell.
The utility model with the publication number of CN205957204U relates to a waste heat recovery device of a tube bundle dryer, which comprises a saloon connected with a tail gas outlet at the top of the tube bundle dryer, an air outlet of the saloon is connected with an air inlet of an absorption tower at the middle part of a waste heat absorption tower, an air outlet of the absorption tower at the top of the waste heat absorption tower is connected with an inlet of an exhaust fan of the absorption tower, a filler layer is arranged at the upper part of an inner cavity of the waste heat absorption tower, a liquid distribution disc is arranged above the filler layer, a water collecting disc is arranged at the bottom of the waste heat absorption tower, a water outlet at the bottom of the water collecting disc is connected with an inlet of a waste heat flash tank at the middle part of the waste heat flash tank, a steam outlet of the waste heat flash tank at the top of the waste heat flash tank is connected with a flash steam pipe, a water outlet of the flash tank at the bottom of the waste heat flash tank is connected with an inlet of a circulating pump of the absorption tower, and an outlet of the circulating pump of the absorption tower is connected with a water supplementing pipe at the center of the liquid distribution disc through a circulating pipe of the absorption tower. The waste heat recovery device of the tube bundle dryer can fully recover waste heat of tail gas and condensate water of the tube bundle dryer.
The technical scheme still has the following defects:
1. in the technical scheme, only the waste heat can be used for heating water, dust and impurities in the waste heat gas are filtered, waste heat recovery is single, and the waste heat gas cannot be fully utilized;
2. when grains such as wheat, soybeans and rice are dried, dust and impurities contained in the grains flow along with waste heat gas, so that in the later waste heat recovery process, the dust and the impurities can be attached to the inner wall of a hot gas pipeline to influence heat exchange efficiency, and even cause blockage;
3. when grains are put into a dryer for drying, the dryer needs to consume a large amount of electric energy to heat external cold air for drying the grains step by step, and then needs to consume a large amount of electric energy.
In order to solve the problems, the invention provides waste heat recovery equipment and a waste heat recovery method of a tube bundle dryer.
Disclosure of Invention
The invention provides waste heat recovery equipment and a waste heat recovery method of a tube bundle dryer, which solve the defects that waste heat recovery is single, waste heat gas cannot be fully utilized, dust and impurities contained in grains adhere to the inner wall of a hot gas pipeline, and a large amount of electric energy is required to be consumed in the prior art.
The invention provides the following technical scheme:
a tube bundle dryer waste heat recovery apparatus comprising: the device comprises a tube bundle dryer, a heat energy conversion structure, a water storage tank, a spray tower and a drying structure;
the tube bundle dryer is communicated with the heat energy conversion structure through a first heat preservation Wen Guanxiang, the heat energy conversion structure is communicated with the water storage tank through a second heat preservation pipe, the water storage tank is communicated with the spray tower through a concentrated pipe, the spray tower is communicated with the drying structure through a first return pipe, and the drying structure is communicated with the tube bundle dryer through a second return pipe.
In a possible design, heat energy conversion structure includes preheats section of thick bamboo and support, the both sides homogeneous body casting of preheating the section of thick bamboo has the swivel becket, and one side that two swivel beckets kept away from each other all rotates with the support to be connected, preheat one side inner wall that section of thick bamboo kept away from each other and all rotate and be connected with the heat storage dish, two one side fixedly connected with a plurality of first heating tube bundles that the heat storage dish is close to each other, and a plurality of first heating tube bundles are annular to be arranged, two one side fixedly connected with second heating tube bundles that the heat storage dish is close to each other, the bottom fixedly connected with a plurality of third heating tube bundles of second heating tube bundles, second heating tube bundles are linked together with the third heating tube bundles, and the both ends of first heating tube bundles and second heating tube bundles all are linked together with the heat storage dish, through the cooperation of a plurality of third heating tube bundles, drive grain pivoted in-process at the preheating the section of thick bamboo, the third heating tube bundles can increase the area of contact with grain, even to the grain preheat, two the support in the fixed intake pipe and outlet duct that run through respectively, intake pipe and outlet duct and one end that is close to each other all rotate and preheat the section of thick bamboo and run through the heating tube 62 and are kept away from each other with the first heating tube, the first heating tube bundle and the first heating tube, the same heating tube and the first heating tube is kept away from the first heating tube, and the first heating tube and the same heating tube and the second heating tube and the heating tube.
In a possible design, heat energy conversion structure includes preheating section of thick bamboo and support, and the outer wall of preheating section of thick bamboo rotates the cover and is equipped with the ring cover, the bottom inner wall of ring cover is equipped with a plurality of collecting vat, the bottom inner wall of ring cover is equipped with the row silo, the bottom of preheating section of thick bamboo is equipped with the bin outlet, the outer wall of preheating section of thick bamboo is equipped with a plurality of sieves, and sieve and collecting vat cooperate, when the preheating section of thick bamboo drives grain rotation in-process, the sieve rotates to the position of alignment with the collecting vat, the dust that mix with in the grain, impurity can drop to the collecting vat through the filtration of sieve, preliminary to filter the grain, prevent to contain too much dust, impurity in the grain of later stage, lead to waste gas after the drying to take dust, impurity out and adhere to and make the pipeline jam at the pipeline inner wall, the bottom inner wall fixedly connected with inlet pipe of row silo, and the bottom of inlet pipe is linked together with the feeding of tube bank desiccator, it runs through the shutoff board that is used for sealing row silo to slide in the row silo, after preheating section of thick bamboo in the preheating section of thick bamboo and drive grain in the grain rotation process, when the sieve rotates to the position of registering with the collecting vat, during can consume the energy to the inlet pipe to the grain in the dryer through row in the grain bundle desiccator.
In one possible design, the drying structure includes the drying cabinet, rotate the closing plate, be equipped with a plurality of air drying layers that carry out the drying to the hot air in the drying cabinet, air drying layer can make asbestos net, active carbon, moisture absorption box, charcoal etc. air drying layer can with the form joint of buckle in the drying cabinet, also can be in the drying cabinet through the form threaded connection of bolt, rotate the closing plate and rotate the opening part of connecting at the drying cabinet, and rotate the opening that the closing plate can seal the drying cabinet through the sealing strip outer wall, can seal the drying cabinet through rotating the closing plate, can open and rotate the closing plate and change air drying layer when air drying layer loses the drying effect, rotate the closing plate and seal the drying cabinet again after changing equally, prevent that the drying cabinet from drying the hot air when, the air external world overflows, leads to the heat energy extravagant.
In one possible design, the water storage tank includes an annular heating pipe, clean domestic water is arranged in the water storage tank, namely, the annular heating pipe heats the water in the water storage tank and then enables healthy drinking of a user, one end of the annular heating pipe extends to one side of the water storage tank and is communicated with the other end of the second heat preservation pipe, and the other end of the annular heating pipe extends to the other side of the water storage tank and is communicated with the concentration pipe.
In one possible design, one of them through extension board fixedly connected with driving motor in one side of support, driving motor's output shaft rotates and runs through one of them support and fixedly connected with gear, preheat the fixed cover of outer wall of section of thick bamboo and be equipped with the ring gear that meshes with the gear, through driving motor drive gear, the gear passes through the ring gear and drives and preheat the section of thick bamboo and rotate, and then preheat the section of thick bamboo and be convenient for later stage preheating that not only can make the grain become loose at pivoted in-process, still can screen dust and impurity in the grain through the sieve.
In a possible design, the top of ring cover is equipped with the air vent, be equipped with the airstrainer in the air vent, when first heating tube bank, second heating tube bank and third heating tube bank preheat the grain in the section of thick bamboo, the waste gas in the section of thick bamboo of preheating carries dust, impurity in the grain entering the air vent through sieve and bin outlet, can filter dust, impurity in the waste gas through the airstrainer, prevents dust, impurity in the waste gas and adheres to in the pipeline, blocks up the pipeline, the top fixedly connected with second draught fan of ring cover, and the air intake of second draught fan extends to in the air vent, the fixed cover of air outlet of second draught fan is equipped with the shunt tubes, and the bottom of shunt tubes extends to in the spray column, and the waste gas after the second draught fan filters in with the air vent is poured into the spray column, sprays waste gas through the spray column, gets rid of dust, impurity in the waste gas, makes things convenient for later stage to hot waste gas cyclic utilization.
In a possible design, one side of tube bank desiccator is equipped with the first draught fan that is linked together with tube bank desiccator air outlet, the air outlet of first draught fan is linked together with the other end of first heat preservation pipe, can be with the interior hot waste gas of tube bank desiccator in discharging into first heating tube bank, second heating tube bank and the third heating tube bank fast in being arranged in to grain preheat, preheat the bottom of section of thick bamboo and be equipped with two backup pads, and the top of backup pad and preheat the outer wall sliding fit of section of thick bamboo, one side that two backup pads are close to each other all with ring cover fixed connection, can support preheating the section of thick bamboo through the backup pad, make preheating section of thick bamboo can steadily rotate the ring cover, the backup pad can be fixed the ring cover simultaneously, prevent to preheat the section of thick bamboo and drive the ring cover at pivoted in-process and rotate.
In one possible design, one side of second back flow is equipped with the shunt tube that is used for the reposition of redundant personnel, the outer wall of shunt tube is used for controlling the valve of shunt tube switching, the one end of shunt tube is equipped with the disinfect box that is linked together, the sterilamp that disinfects to the steam is installed to the top inner wall of disinfect box, one side of disinfect box is equipped with the heat supply pipe that will disinfect after the steam is leading-in indoor, when in winter, opens the valve, and the steam in the second back flow passes through the shunt tube and gets into in the disinfect box, disinfects to the steam through the sterilamp, and then will disinfect in the steam after the disinfection is discharged into mill workshop, office, gives the staff and provides the heating installation.
The waste heat recovery method of the waste heat recovery equipment of the tube bundle dryer comprises the following steps:
s1, firstly throwing grains to be preheated into a preheating cylinder, then discharging hot waste gas in a tube bundle dryer into an air inlet tube and a heat storage disc through a first heat preservation tube by a first induced draft fan, starting a driving motor to drive a circular ring sleeve to rotate, meshing gears with the toothed ring, driving the preheating cylinder to rotate through the toothed ring, and driving the grains in the preheating cylinder to rotate by the rotation of the preheating cylinder;
s2, preheating grains in a preheating cylinder by hot waste gas in a first heating tube bundle, a second heating tube bundle and a third heating tube bundle, then entering an annular heating tube through an air outlet pipe and a second heat preservation pipe, heating water in a water storage tank by the hot waste gas through the annular heating tube, and enabling the water to be used for daily life of a factory;
S3, the dried gas still has a certain temperature, then the gas is discharged into a tube bundle dryer, the gas is heated again by the tube bundle dryer and used for drying grains, and the temperature of the gas entering the tube bundle dryer is higher than that of the air outside, so that the consumed electric energy can be reduced when the tube bundle dryer heats hot gas for drying operation;
s4, when the preheating cylinder rotates to preheat grains in the preheating cylinder, the preheating cylinder can drive the sieve plate to rotate, after the sieve plate is aligned with the collecting tank, dust and impurities in snacks fall into the collecting tank through the sieve plate to primarily filter the grains, so that the dust and impurities in the grains are prevented from adhering to the inner wall of the pipeline along with the flow of hot gas when the grains are dried in the later stage, and the pipeline is blocked and the heat exchange efficiency is influenced;
s5, when the preheating cylinder drives the sieve plate, the discharge hole and the exhaust groove to correspond to each other, hot waste gas enters the exhaust groove through the sieve plate, the discharge hole and the exhaust groove, upward-gushed hot waste gas can be subjected to preliminary filtration through the air filter screen, large-particle impurities in the hot waste gas can be filtered, the large-particle impurities are prevented from blocking a pipeline, then a second induced draft fan discharges the hot waste gas filtered in the exhaust groove into a spray tower through a shunt pipe for spray treatment;
S6, after the grain waste heat treatment in the preheating cylinder is finished, the preheating cylinder drives the discharge hole to rotate and align with the discharge groove, the blocking plate is pulled outwards, grains in the preheating cylinder enter the tube bundle dryer through the discharge groove and the feed pipe, and the consumption of energy sources can be reduced when the later tube bundle dryer dries the grains due to the fact that the grains are preheated;
and S7, when the valve is opened in winter, hot air in the second return pipe enters the sterilizing box through the shunt pipe, the hot air is sterilized and disinfected through the ultraviolet sterilizing lamp, and then the sterilized and disinfected hot air is discharged into a factory workshop and an office, so that heating air is provided for staff.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.
According to the grain preheating device, the inner walls of one sides of the preheating cylinders, which are far away from each other, are respectively and rotatably connected with the heat storage plates, one sides of the two heat storage plates, which are close to each other, are fixedly connected with the first heating tube bundles, one sides of the two heat storage plates, which are close to each other, are fixedly connected with the second heating tube bundles, the bottoms of the second heating tube bundles are fixedly connected with the third heating tube bundles, and the contact area between the third heating tube bundles and grains can be increased by the cooperation of the third heating tube bundles in the process of driving the grains to rotate by the preheating cylinders, so that the grains are uniformly preheated, after the waste heat treatment of the grains in the preheating cylinders is finished, the grains in the preheating cylinders enter the tube bundle dryer, and the consumption of energy sources can be reduced when the grains are dried by the later tube bundle dryer, and the hot waste gas is fully utilized;
According to the invention, the outer wall of the preheating cylinder is rotationally sleeved with the circular ring sleeve, the inner wall of the bottom of the circular ring sleeve is provided with the plurality of collecting grooves, the inner wall of the bottom of the circular ring sleeve is provided with the discharge groove, the bottom of the preheating cylinder is provided with the discharge hole, the outer wall of the preheating cylinder is provided with the plurality of sieve plates which are matched with the collecting grooves, when the preheating cylinder drives grains to rotate, the sieve plates rotate to the position aligned with the collecting grooves, dust and impurities mixed in the grains can fall into the collecting grooves through the filtration of the sieve plates, grains are primarily filtered, excessive dust and impurities contained in the grains in the later period are prevented, and the dried waste gas brings the dust and impurities out and is attached to the inner wall of the pipeline to cause the blockage of the pipeline;
according to the invention, the top of the circular sleeve is provided with the exhaust groove, the exhaust groove is internally provided with the air filter screen, when the first heating tube bundle, the second heating tube bundle and the third heating tube bundle preheat grains in the preheating cylinder, dust and impurities contained in the grains carried by waste gas in the preheating cylinder enter the exhaust groove through the sieve plate and the discharge port, and the dust and impurities in the waste gas can be filtered through the air filter screen, so that the dust and impurities in the waste gas are prevented from being attached to a pipeline and the pipeline is blocked;
According to the invention, the drying box is internally provided with the plurality of air drying layers for drying hot air, the rotary sealing plate is rotationally connected to the opening of the drying box, and after sprayed hot air enters the drying box, the air drying layers filter moisture in the hot air, and then the dried hot air is poured into the tube bundle dryer again to heat the air again for drying grains, and the dried air still has a certain temperature.
According to the invention, the grain can be preheated by using the hot waste gas, the domestic water is heated, the heating is performed, the hot gas is recycled for re-drying, the hot waste gas can be fully utilized, the energy consumed by the subsequent grain drying can be reduced, in addition, the grain is filtered in the preheating process, and the pipeline blockage caused by dust and impurities adhering to the pipeline along with the hot waste gas in the grain drying process is prevented.
Drawings
Fig. 1 is a schematic front view of a waste heat recovery apparatus for a tube bundle dryer according to an embodiment of the present invention;
Fig. 2 is a schematic three-dimensional structure diagram of a heat energy conversion structure of a waste heat recovery device of a tube bundle dryer according to an embodiment of the present invention;
fig. 3 is a schematic view of a three-dimensional cross-sectional structure of a preheating cylinder of a waste heat recovery apparatus of a tube bundle dryer according to an embodiment of the present invention;
fig. 4 is a schematic view of a three-dimensional cross-sectional structure of a preheating cylinder of a waste heat recovery apparatus of a tube bundle dryer according to an embodiment of the present invention;
fig. 5 is a schematic three-dimensional structure diagram of a heat storage tray and a first heating tube bundle of a waste heat recovery device of a tube bundle dryer according to an embodiment of the present invention;
fig. 6 is a schematic three-dimensional structure of a preheating cylinder of a waste heat recovery device of a tube bundle dryer according to an embodiment of the present invention;
fig. 7 is a schematic view of a three-dimensional cross-sectional structure of a circular sleeve of a waste heat recovery device of a tube bundle dryer according to an embodiment of the present invention;
fig. 8 is a schematic three-dimensional sectional view of a drying structure of a waste heat recovery apparatus of a tube bundle dryer according to an embodiment of the present invention;
fig. 9 is a schematic three-dimensional sectional structure of a water storage tank of a waste heat recovery device of a tube bundle dryer according to an embodiment of the present invention;
fig. 10 is a schematic front view of a waste heat recovery apparatus for a tube bundle dryer according to a second embodiment of the present invention.
Reference numerals:
1. a tube bundle dryer; 2. a thermal energy conversion structure; 3. a water storage tank; 4. a spray tower; 5. a drying structure; 6. a bracket; 7. a rotating ring; 8. a preheating cylinder; 9. a heat storage plate; 10. a first heating tube bundle; 11. a second heating tube bundle; 12. a third heating tube bundle; 13. an air inlet pipe; 14. an air outlet pipe; 15. a first induced draft fan; 16. a first heat-preserving tube; 17. a circular ring sleeve; 18. a sieve plate; 19. a collection tank; 20. a discharge port; 21. a discharge chute; 22. a plugging plate; 23. a feed pipe; 24. an exhaust groove; 25. an air filter screen; 26. a driving motor; 27. a gear; 28. a toothed ring; 29. a support plate; 30. a second induced draft fan; 31. a second insulating tube; 32. an annular heating pipe; 33. a concentration tube; 34. a first return pipe; 35. a drying box; 36. an air drying layer; 37. rotating the closing plate; 38. a second return pipe; 39. a shunt; 40. a valve; 41. a sterilization box; 42. an ultraviolet germicidal lamp; 43. and a heat supply pipe.
Detailed Description
Embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention.
In describing embodiments of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled" and "mounted" should be interpreted broadly, and for example, "coupled" may or may not be detachably coupled; may be directly connected or indirectly connected through an intermediate medium. In addition, "communication" may be direct communication or may be indirect communication through an intermediary. Wherein, "fixed" means that the relative positional relationship is not changed after being connected to each other. References to orientation terms, such as "inner", "outer", "top", "bottom", etc., in the embodiments of the present invention are merely to refer to the orientation of the drawings and, therefore, the use of orientation terms is intended to better and more clearly illustrate and understand the embodiments of the present invention, rather than to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the embodiments of the present invention.
In embodiments of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.
In the embodiment of the present invention, "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the invention. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.
Embodiment 1, referring to fig. 1, a waste heat recovery apparatus of a tube bundle dryer of the present embodiment includes: the tube bundle dryer 1, heat energy conversion structure 2, storage water tank 3, spray column 4 and drying structure 5, be linked together through first heat preservation pipe 16 between tube bundle dryer 1 and the heat energy conversion structure 2, be linked together through second heat preservation pipe 31 between heat energy conversion structure 2 and the storage water tank 3, be linked together through concentrated pipe 33 between storage water tank 3 and the spray column 4, be linked together through first back flow 34 between spray column 4 and the drying structure 5, be linked together through second back flow 38 between drying structure 5 and the tube bundle dryer 1, one side of tube bundle dryer 1 is equipped with first draught fan 15 that is linked together with tube bundle dryer 1 air outlet, the air outlet of first draught fan 15 is linked together with the other end of first heat preservation pipe 16, be arranged in the first heating tube bank 10 of hot waste gas fast in the tube bundle dryer 1 through first draught fan 15, second heating tube bank 11 and the third heating tube bank 12 be arranged in preheating grain, the bottom of preheating cylinder 8 is equipped with two backup pads 29, and the top and the outer wall sliding fit of preheating cylinder 8 of backup pad 29, one side that two backup pads 29 are close to each other all with the ring 17 through fixed connection, can carry out the rotation to the backup pad 8 through the backup pad 29, the steady rotation to the backup pad 8 can be carried out in the ring 17 through fixed connection to the backup pad 8, the rotation can be kept round in the steady rotation to the backup pad 8, the ring 17 can prevent the rotation to rotate the ring 17 simultaneously, the ring 17 can be rotated and stable in the course can be rotated and kept round and stable.
Referring to fig. 2, 3 and 4, the heat energy conversion structure 2 comprises a preheating cylinder 8 and a bracket 6, wherein two sides of the preheating cylinder 8 are integrally cast with a rotating ring 7, one far away side of the two rotating rings 7 is rotationally connected with the bracket 6, one far away side of the preheating cylinder 8 is rotationally connected with a heat storage disk 9, one near side of the two heat storage disks 9 is fixedly connected with a plurality of first heating tube bundles 10 through bolts, the plurality of first heating tube bundles 10 are annularly arranged, one near side of the two heat storage disks 9 is fixedly connected with a second heating tube bundle 11, the bottom of the second heating tube bundle 11 is fixedly connected with a plurality of third heating tube bundles 12 through bolts, the second heating tube bundle 11 is communicated with the third heating tube bundle 12, two ends of the first heating tube bundles 10 and the second heating tube bundles 11 are communicated with the heat storage disk 9, through the cooperation of a plurality of third heating tube bundles 12, in the process of driving grains to rotate by the preheating cylinder 8, the third heating tube bundles 12 can increase the contact area with the grains, evenly preheat the grains, the two brackets 6 are respectively fixedly penetrated with the air inlet tube 13 and the air outlet tube 14, one ends of the air inlet tube 13 and the air outlet tube 14, which are close to each other, respectively rotate to penetrate through the preheating cylinder 8 and are respectively communicated with the heat storage disc 9, one end of the air inlet tube 13, which is far away from the preheating cylinder 8, is communicated with the first heat preservation tube 16, one end of the air outlet tube 14, which is far away from the preheating cylinder 8, is communicated with the second heat preservation tube 31, and the air inlet tube 13, the air outlet tube 14, the heat storage disc 9 and the second heating tube bundles 11 are positioned at the same axis, so that grains in the preheating cylinder 8 can be evenly stirred by the first heating tube bundles 10, the second heating tube bundles 11 and the third heating tube bundles 12 in the process of rotating the preheating cylinder 8, the grains in the preheating cylinder 8 are heated.
Referring to fig. 2, fig. 3 and fig. 4, the heat energy conversion structure 2 includes a preheating cylinder 8 and a support 6, the outer wall rotation cover of the preheating cylinder 8 is equipped with a ring cover 17, the bottom inner wall of the ring cover 17 is equipped with a plurality of collecting tanks 19, the bottom inner wall of the ring cover 17 is equipped with a discharge chute 21, the bottom of the preheating cylinder 8 is equipped with a discharge port 20, the outer wall of the preheating cylinder 8 is equipped with a plurality of sieve plates 18, and the sieve plates 18 cooperate with the collecting tanks 19, when the preheating cylinder 8 drives grain to rotate, the sieve plates 18 rotate to the position aligned with the collecting tanks 19, dust and impurities mixed with in the grain can drop into the collecting tanks 19 through the filtration of the sieve plates 18, the grain is primarily filtered, excessive dust and impurities are prevented from being contained in the grain in the later stage, exhaust gas after the drying is led to take the dust and impurities out and adhere to the inner wall of the pipeline to cause the pipeline to be blocked, the bottom inner wall of the discharge chute 21 is fixedly connected with a feed pipe 23, and the bottom end of the feed pipe 23 is communicated with the feed of the tube bundle dryer 1, a plate 22 for sealing the discharge chute 21 is penetrated in the discharge chute 21, and the grain can be consumed in the drying machine 1 after the preheating cylinder 8 is finished, and the grain can be exhausted through the drying machine 1 in the drying machine after the drying bundle 1.
Referring to fig. 8, the drying structure 5 includes a drying box 35 and a rotating sealing plate 37, a plurality of air drying layers 36 for drying hot air are disposed in the drying box 35, the air drying layers 36 can enable asbestos gauze, activated carbon, a moisture absorption box, charcoal and the like, the air drying layers 36 can be clamped in the drying box 35 in a fastening manner, or can be connected in the drying box 35 through screw threads in a bolt manner, the rotating sealing plate 37 is rotationally connected at an opening of the drying box 35, and the outer wall of the rotating sealing plate 37 can seal the opening of the drying box 35 through a sealing strip, the drying box 35 can be sealed through the rotating sealing plate 37, when the air drying layers 36 lose drying effect, the rotating sealing plate 37 can be opened to replace the air drying layers 36, the drying box 35 is sealed again after the replacement, air outside is prevented from overflowing when the drying box 35 dries hot air, heat energy is wasted, and hot air after the rotating sealing plate 37 passes through the drying box 35, the air drying layers 36 filter the hot air, and then the hot air flows into the drying machine tube bundles again to cool the air, and the air tube bundles are used for drying the grain drying machine, and the electric energy consumption is reduced when the electric energy consumption is higher than that the electric energy is higher than that of the air bundles 1.
Referring to fig. 9, the water storage tank 3 includes an annular heating pipe 32, clean domestic water is provided in the water storage tank 3, that is, the annular heating pipe 32 heats the water in the water storage tank 3 to enable a user to drink healthily, one end of the annular heating pipe 32 extends to one side of the water storage tank 3 and is communicated with the other end of the second heat preservation pipe 31, and the other end of the annular heating pipe 32 extends to the other side of the water storage tank 3 and is communicated with a concentration pipe 33.
Referring to fig. 3, one side of one of the brackets 6 is fixedly connected with a driving motor 26 through a support plate, an output shaft of the driving motor 26 rotates to penetrate through one of the brackets 6 and is fixedly connected with a gear 27, a toothed ring 28 meshed with the gear 27 is fixedly sleeved on the outer wall of the preheating cylinder 8, the gear 27 is driven by the driving motor 26, the gear 27 drives the preheating cylinder 8 to rotate through the toothed ring 28, and then the preheating cylinder 8 can not only enable grains to become loose and be convenient for later-stage preheating, but also screen dust and impurities in the grains through the screen plate 18.
Referring to fig. 1 and 2, the top of ring cover 17 is equipped with exhaust groove 24, be equipped with airstrainer 25 in the exhaust groove 24, when first heating tube bank 10, second heating tube bank 11 and third heating tube bank 12 preheat the grain in the preheating drum 8, dust, impurity that carries in the waste gas in the preheating drum 8 gets into in the exhaust groove 24 through sieve 18 and bin outlet 20, can filter dust, impurity in the waste gas through airstrainer 25, prevent dust, impurity in the waste gas from adhering to in the pipeline, block up the pipeline, the top fixedly connected with second draught fan 30 of ring cover 17, and the air intake of second draught fan 30 extends to in the exhaust groove 24, the fixed cover of air outlet of second draught fan 30 is equipped with shunt tubes 39, and the bottom of shunt tubes 39 extends to in the spray column 4, second draught fan 30 pours the waste gas after filtering in the exhaust groove 24 into spray column 4, carry out the waste gas through spray column 4, get rid of dust, impurity in the waste gas, make things convenient for later stage to hot waste gas cyclic utilization.
Embodiment 2, referring to fig. 1, a waste heat recovery apparatus of a tube bundle dryer of the present embodiment includes: the tube bundle dryer 1, heat energy conversion structure 2, storage water tank 3, spray column 4 and drying structure 5, be linked together through first heat preservation pipe 16 between tube bundle dryer 1 and the heat energy conversion structure 2, be linked together through second heat preservation pipe 31 between heat energy conversion structure 2 and the storage water tank 3, be linked together through concentrated pipe 33 between storage water tank 3 and the spray column 4, be linked together through first back flow 34 between spray column 4 and the drying structure 5, be linked together through second back flow 38 between drying structure 5 and the tube bundle dryer 1, one side of tube bundle dryer 1 is equipped with first draught fan 15 that is linked together with tube bundle dryer 1 air outlet, the air outlet of first draught fan 15 is linked together with the other end of first heat preservation pipe 16, be arranged in the first heating tube bank 10 of hot waste gas fast in the tube bundle dryer 1 through first draught fan 15, second heating tube bank 11 and the third heating tube bank 12 be arranged in preheating grain, the bottom of preheating cylinder 8 is equipped with two backup pads 29, and the top and the outer wall sliding fit of preheating cylinder 8 of backup pad 29, one side that two backup pads 29 are close to each other all with the ring 17 through fixed connection, can carry out the rotation to the backup pad 8 through the backup pad 29, the steady rotation to the backup pad 8 can be carried out in the ring 17 through fixed connection to the backup pad 8, the rotation can be kept round in the steady rotation to the backup pad 8, the ring 17 can prevent the rotation to rotate the ring 17 simultaneously, the ring 17 can be rotated and stable in the course can be rotated and kept round and stable.
Referring to fig. 2, 3 and 4, the heat energy conversion structure 2 comprises a preheating cylinder 8 and a bracket 6, wherein two sides of the preheating cylinder 8 are integrally cast with a rotating ring 7, one far away side of the two rotating rings 7 is rotationally connected with the bracket 6, one far away side of the preheating cylinder 8 is rotationally connected with a heat storage disk 9, one near side of the two heat storage disks 9 is fixedly connected with a plurality of first heating tube bundles 10 through bolts, the plurality of first heating tube bundles 10 are annularly arranged, one near side of the two heat storage disks 9 is fixedly connected with a second heating tube bundle 11, the bottom of the second heating tube bundle 11 is fixedly connected with a plurality of third heating tube bundles 12 through bolts, the second heating tube bundle 11 is communicated with the third heating tube bundle 12, two ends of the first heating tube bundles 10 and the second heating tube bundles 11 are communicated with the heat storage disk 9, through the cooperation of a plurality of third heating tube bundles 12, in the process of driving grains to rotate by the preheating cylinder 8, the third heating tube bundles 12 can increase the contact area with the grains, evenly preheat the grains, the two brackets 6 are respectively fixedly penetrated with the air inlet tube 13 and the air outlet tube 14, one ends of the air inlet tube 13 and the air outlet tube 14, which are close to each other, respectively rotate to penetrate through the preheating cylinder 8 and are respectively communicated with the heat storage disc 9, one end of the air inlet tube 13, which is far away from the preheating cylinder 8, is communicated with the first heat preservation tube 16, one end of the air outlet tube 14, which is far away from the preheating cylinder 8, is communicated with the second heat preservation tube 31, and the air inlet tube 13, the air outlet tube 14, the heat storage disc 9 and the second heating tube bundles 11 are positioned at the same axis, so that grains in the preheating cylinder 8 can be evenly stirred by the first heating tube bundles 10, the second heating tube bundles 11 and the third heating tube bundles 12 in the process of rotating the preheating cylinder 8, the grains in the preheating cylinder 8 are heated.
Referring to fig. 2, fig. 3 and fig. 4, the heat energy conversion structure 2 includes a preheating cylinder 8 and a support 6, the outer wall rotation cover of the preheating cylinder 8 is equipped with a ring cover 17, the bottom inner wall of the ring cover 17 is equipped with a plurality of collecting tanks 19, the bottom inner wall of the ring cover 17 is equipped with a discharge chute 21, the bottom of the preheating cylinder 8 is equipped with a discharge port 20, the outer wall of the preheating cylinder 8 is equipped with a plurality of sieve plates 18, and the sieve plates 18 cooperate with the collecting tanks 19, when the preheating cylinder 8 drives grain to rotate, the sieve plates 18 rotate to the position aligned with the collecting tanks 19, dust and impurities mixed with in the grain can drop into the collecting tanks 19 through the filtration of the sieve plates 18, the grain is primarily filtered, excessive dust and impurities are prevented from being contained in the grain in the later stage, exhaust gas after the drying is led to take the dust and impurities out and adhere to the inner wall of the pipeline to cause the pipeline to be blocked, the bottom inner wall of the discharge chute 21 is fixedly connected with a feed pipe 23, and the bottom end of the feed pipe 23 is communicated with the feed of the tube bundle dryer 1, a plate 22 for sealing the discharge chute 21 is penetrated in the discharge chute 21, and the grain can be consumed in the drying machine 1 after the preheating cylinder 8 is finished, and the grain can be exhausted through the drying machine 1 in the drying machine after the drying bundle 1.
Referring to fig. 8, the drying structure 5 includes a drying box 35 and a rotating sealing plate 37, a plurality of air drying layers 36 for drying hot air are disposed in the drying box 35, the air drying layers 36 can enable asbestos gauze, activated carbon, a moisture absorption box, charcoal and the like, the air drying layers 36 can be clamped in the drying box 35 in a fastening manner, or can be connected in the drying box 35 through screw threads in a bolt manner, the rotating sealing plate 37 is rotationally connected at an opening of the drying box 35, and the outer wall of the rotating sealing plate 37 can seal the opening of the drying box 35 through a sealing strip, the drying box 35 can be sealed through the rotating sealing plate 37, when the air drying layers 36 lose drying effect, the rotating sealing plate 37 can be opened to replace the air drying layers 36, the drying box 35 is sealed again after the replacement, air outside is prevented from overflowing when the drying box 35 dries hot air, heat energy is wasted, and hot air after the rotating sealing plate 37 passes through the drying box 35, the air drying layers 36 filter the hot air, and then the hot air flows into the drying machine tube bundles again to cool the air, and the air tube bundles are used for drying the grain drying machine, and the electric energy consumption is reduced when the electric energy consumption is higher than that the electric energy is higher than that of the air bundles 1.
Referring to fig. 9, the water storage tank 3 includes an annular heating pipe 32, clean domestic water is provided in the water storage tank 3, that is, the annular heating pipe 32 heats the water in the water storage tank 3 to enable a user to drink healthily, one end of the annular heating pipe 32 extends to one side of the water storage tank 3 and is communicated with the other end of the second heat preservation pipe 31, and the other end of the annular heating pipe 32 extends to the other side of the water storage tank 3 and is communicated with a concentration pipe 33.
Referring to fig. 3, one side of one of the brackets 6 is fixedly connected with a driving motor 26 through a support plate, an output shaft of the driving motor 26 rotates to penetrate through one of the brackets 6 and is fixedly connected with a gear 27, a toothed ring 28 meshed with the gear 27 is fixedly sleeved on the outer wall of the preheating cylinder 8, the gear 27 is driven by the driving motor 26, the gear 27 drives the preheating cylinder 8 to rotate through the toothed ring 28, and then the preheating cylinder 8 can not only enable grains to become loose and be convenient for later-stage preheating, but also screen dust and impurities in the grains through the screen plate 18.
Referring to fig. 1 and 2, the top of ring cover 17 is equipped with exhaust groove 24, be equipped with airstrainer 25 in the exhaust groove 24, when first heating tube bank 10, second heating tube bank 11 and third heating tube bank 12 preheat the grain in the preheating drum 8, dust, impurity that carries in the waste gas in the preheating drum 8 gets into in the exhaust groove 24 through sieve 18 and bin outlet 20, can filter dust, impurity in the waste gas through airstrainer 25, prevent dust, impurity in the waste gas from adhering to in the pipeline, block up the pipeline, the top fixedly connected with second draught fan 30 of ring cover 17, and the air intake of second draught fan 30 extends to in the exhaust groove 24, the fixed cover of air outlet of second draught fan 30 is equipped with shunt tubes 39, and the bottom of shunt tubes 39 extends to in the spray column 4, second draught fan 30 pours the waste gas after filtering in the exhaust groove 24 into spray column 4, carry out the waste gas through spray column 4, get rid of dust, impurity in the waste gas, make things convenient for later stage to hot waste gas cyclic utilization.
Referring to fig. 10, a shunt tube 39 for shunt is provided at one side of the second return tube 38, a valve 40 for controlling the shunt tube 39 to be opened and closed is provided at one end of the shunt tube 39, a sterilizing box 41 is provided at one end of the shunt tube 39, an ultraviolet sterilizing lamp 42 for sterilizing and sterilizing the hot air is mounted at the top inner wall of the sterilizing box 41, a heating tube 43 for introducing the sterilized and sterilized hot air into the room is provided at one side of the sterilizing box 41, when the valve 40 is opened in winter, the hot air in the second return tube 38 enters the sterilizing box 41 through the shunt tube 39, sterilizing and sterilizing the hot air by the ultraviolet sterilizing lamp 42, and then discharging the sterilized and sterilized hot air into a factory workshop and an office, and providing heating to staff.
A waste heat recovery method of a tube bundle dryer waste heat recovery apparatus, comprising the steps of:
s1, firstly, grains to be preheated are thrown into a preheating cylinder 8, then a first induced draft fan 15 discharges hot waste gas in a tube bundle dryer 1 into an air inlet tube 13 and a heat storage disc 9 through a first heat preservation tube 16, a driving motor 26 is started to drive a circular ring sleeve 17 to rotate, a gear 27 is meshed with a gear ring 28, the gear 27 drives the preheating cylinder 8 to rotate through the gear ring 28, the rotation of the preheating cylinder 8 can drive grains in the preheating cylinder 8 to rotate, and as the hot waste gas in the heat storage disc 9 enters a first heating tube bundle 10, a second heating tube bundle 11 and a third heating tube bundle 12, the first heating tube bundle 10, the second heating tube bundle 11 and the third heating tube bundle 12 can fully contact the grains along with the rotation of the grains driven by the preheating cylinder 8, and then the grains can be preheated;
S2, preheating grains in the preheating cylinder 8 by hot waste gas in the first heating tube bundle 10, the second heating tube bundle 11 and the third heating tube bundle 12, then entering the annular heating tube 32 through the gas outlet pipe 14 and the second heat preservation tube 31, heating water in the water storage tank 3 by the hot waste gas through the annular heating tube 32, and then reducing the temperature of the water in the water storage tank 3 after the water in the water storage tank is heated by the hot waste gas, then entering the spray tower 4 through the concentrated tube 33, spraying the hot waste gas for treating dust and impurities in the hot waste gas, entering the drying box 35 through the first return tube 34, and drying the hot waste gas through the plurality of air drying layers 36 to remove the moisture in the hot waste gas;
s3, the dried gas still has a certain temperature, then the gas is discharged into the tube bundle dryer 1, the gas is heated again by the tube bundle dryer 1 for drying grains, and the gas entering the tube bundle dryer 1 has higher temperature compared with the outside air, so that the consumed electric energy can be reduced when the tube bundle dryer 1 heats the hot gas for drying operation;
S4, when the preheating cylinder 8 rotates to preheat grains in the preheating cylinder 8, the preheating cylinder 8 can drive the sieve plate 18 to rotate, and after the sieve plate 18 is aligned with the collecting groove 19, dust and impurities in snacks fall into the collecting groove 19 through the sieve plate 18 to primarily filter the grains, so that dust and impurities in the grains are prevented from adhering to the inner wall of a pipeline along with the flow of hot gas when the grains are dried in a later stage, and the pipeline is blocked and the heat exchange efficiency is influenced;
s5, when the preheating cylinder 8 drives the sieve plate 18, the discharge opening 20 and the exhaust groove 24 to correspond, hot waste gas enters the exhaust groove 24 through the sieve plate 18, the discharge opening 20 and the exhaust groove 24, upward hot waste gas can be subjected to preliminary filtration through the air filter screen 25, large particle impurities in the hot waste gas can be filtered, the large particle impurities are prevented from blocking a pipeline, then a second induced draft fan 30 is arranged, and the filtered hot waste gas in the exhaust groove 24 is discharged into the spray tower 4 through the shunt tube 39 for spray treatment;
s6, after the grain waste heat treatment in the preheating cylinder 8 is finished, the preheating cylinder 8 drives the discharge hole 20 to rotate and align with the discharge groove 21, the blocking plate 22 is pulled outwards, grains in the preheating cylinder 8 enter the tube bundle dryer 1 through the discharge groove 21 and the feed pipe 23, and the consumption of energy sources can be reduced when the grain is dried by the tube bundle dryer 1 in the later period because the grains are preheated;
And S7, when the valve 40 is opened in winter, hot air in the second return pipe 38 enters the sterilizing box 41 through the shunt pipe 39, the hot air is sterilized and disinfected through the ultraviolet sterilizing lamp 42, and then the sterilized and disinfected hot air is discharged into a factory workshop and an office, so that a worker can supply heating air.
However, as is well known to those skilled in the art, the working principles and wiring methods of the tube bundle dryer 1, the first induced draft fan 15, the driving motor 26, the second induced draft fan 30 and the ultraviolet germicidal lamp 42 are well known, which are all conventional means or common general knowledge, and will not be repeated herein, and any choice can be made by those skilled in the art according to their needs or convenience.
The present invention is not limited to the above embodiments, and any person skilled in the art can easily think about the changes or substitutions within the technical scope of the present invention, and the changes or substitutions are intended to be covered by the scope of the present invention; embodiments of the invention and features of the embodiments may be combined with each other without conflict. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (6)
1. A tube bundle dryer waste heat recovery apparatus, comprising:
the device comprises a tube bundle dryer (1), a heat energy conversion structure (2), a water storage tank (3), a spray tower (4) and a drying structure (5);
the tube bundle dryer (1) is communicated with the heat energy conversion structure (2) through a first heat preservation pipe (16), the heat energy conversion structure (2) is communicated with the water storage tank (3) through a second heat preservation pipe (31), the water storage tank (3) is communicated with the spray tower (4) through a concentrated pipe (33), the spray tower (4) is communicated with the drying structure (5) through a first return pipe (34), and the drying structure (5) is communicated with the tube bundle dryer (1) through a second return pipe (38);
the heat energy conversion structure (2) comprises a preheating cylinder (8) and a bracket (6), wherein two sides of the preheating cylinder (8) are integrally cast with a rotating ring (7), one sides of the two rotating rings (7) which are far away from each other are rotationally connected with the bracket (6), the inner walls of one sides of the preheating cylinder (8) which are far away from each other are rotationally connected with a heat storage disc (9), one sides of the two heat storage discs (9) which are close to each other are fixedly connected with a plurality of first heating tube bundles (10), one sides of the two heat storage discs (9) which are close to each other are fixedly connected with a second heating tube bundle (11), the bottom of the second heating tube bundle (11) is fixedly connected with a plurality of third heating tube bundles (12), the second heating tube bundles (11) are communicated with the third heating tube bundles (12), two ends of the first heating tube bundles (10) and the second heating tube bundles (11) are communicated with the heat storage disc (9), an air inlet pipe (13) and an air outlet pipe (14) are fixedly penetrated in the two brackets (6), one end of the air inlet pipe (13) and one end (14) which is close to each other is rotationally connected with the preheating cylinder (8) which is far away from each other, one end of the air outlet pipe (14) far away from the preheating cylinder (8) is communicated with a second heat preservation pipe (31);
The heat energy conversion structure (2) comprises a preheating cylinder (8) and a support (6), wherein a circular ring sleeve (17) is sleeved on the outer wall of the preheating cylinder (8) in a rotating way, a plurality of collecting grooves (19) are formed in the inner bottom wall of the circular ring sleeve (17), a discharge groove (21) is formed in the inner bottom wall of the circular ring sleeve (17), a discharge hole (20) is formed in the bottom of the preheating cylinder (8), a plurality of sieve plates (18) are arranged on the outer wall of the preheating cylinder (8), the sieve plates (18) are matched with the collecting grooves (19), a feeding pipe (23) is fixedly connected to the inner bottom wall of the discharge groove (21), the bottom end of the feeding pipe (23) is communicated with the feeding of the tube bundle dryer (1), and a plugging plate (22) for sealing the discharge groove (21) is penetrated in a sliding way in the discharge groove (21).
The drying structure (5) comprises a drying box (35) and a rotary sealing plate (37), a plurality of air drying layers (36) for drying hot air are arranged in the drying box (35), and the rotary sealing plate (37) is rotationally connected to an opening of the drying box (35);
the top of ring cover (17) is equipped with air vent (24), be equipped with airstrainer (25) in air vent (24), the top fixedly connected with second draught fan (30) of ring cover (17), and the air intake of second draught fan (30) extends to in air vent (24), the fixed cover of air outlet of second draught fan (30) is equipped with shunt tubes (39), and the bottom of shunt tubes (39) extends to among spray column (4).
2. Tube bundle dryer waste heat recovery device according to claim 1, characterized in that the water storage tank (3) comprises an annular heating tube (32), one end of the annular heating tube (32) extending to one side of the water storage tank (3) and being in communication with the other end of the second heat preservation tube (31), the other end of the annular heating tube (32) extending to the other side of the water storage tank (3) and being in communication with the concentration tube (33).
3. Waste heat recovery equipment of a tube bundle dryer according to claim 2, characterized in that one side of one of the brackets (6) is fixedly connected with a driving motor (26) through a support plate, an output shaft of the driving motor (26) penetrates through one of the brackets (6) in a rotating mode and is fixedly connected with a gear (27), and a toothed ring (28) meshed with the gear (27) is fixedly sleeved on the outer wall of the preheating cylinder (8).
4. A tube bundle dryer waste heat recovery device according to claim 3, wherein a first induced draft fan (15) communicated with an air outlet of the tube bundle dryer (1) is arranged on one side of the tube bundle dryer (1), the air outlet of the first induced draft fan (15) is communicated with the other end of the first heat preservation tube (16), two support plates (29) are arranged at the bottom of the preheating cylinder (8), the top of each support plate (29) is in sliding fit with the outer wall of the preheating cylinder (8), and one side, close to each other, of each support plate (29) is fixedly connected with the circular ring sleeve (17).
5. The waste heat recovery device of the tube bundle dryer according to claim 4, wherein a shunt tube (39) for shunting is arranged on one side of the second backflow tube (38), a valve (40) for controlling the shunt tube (39) to be opened and closed is arranged on the outer wall of the shunt tube (39), a sterilizing box (41) communicated with one end of the shunt tube (39) is arranged on one end of the shunt tube, an ultraviolet sterilizing lamp (42) for sterilizing hot air is arranged on the inner wall of the top of the sterilizing box (41), and a heat supply tube (43) for guiding the sterilized hot air into a room is arranged on one side of the sterilizing box (41).
6. The waste heat recovery method of a tube bundle dryer waste heat recovery apparatus according to claim 5, comprising the steps of:
s1, firstly throwing grains to be preheated into a preheating cylinder (8), then discharging hot waste gas in a tube bundle dryer (1) into an air inlet tube (13) and a heat storage disc (9) through a first heat preservation tube (16) by a first induced draft fan (15), starting a driving motor (26) to drive a circular ring sleeve (17) to rotate, meshing a gear (27) with a toothed ring (28), driving the preheating cylinder (8) to rotate by the gear (27), and driving the grains in the preheating cylinder (8) to rotate by the rotation of the toothed ring (28), wherein the hot waste gas in the heat storage disc (9) enters a first heating tube bundle (10), a second heating tube bundle (11) and a third heating tube bundle (12), and driving the grains to rotate along with the preheating cylinder (8), so that the first heating tube bundle (10), the second heating tube bundle (11) and the third heating tube bundle (12) can fully contact the grains, and then the grains can be preheated;
S2, preheating grains in a preheating cylinder (8) by hot waste gas in a first heating tube bundle (10), a second heating tube bundle (11) and a third heating tube bundle (12), then entering an annular heating tube (32) through an air outlet tube (14) and a second heat preservation tube (31), heating water in a water storage tank (3) by the hot waste gas through the annular heating tube (32), and enabling the water to be used for daily life of a factory, and also enabling the water to be used for factory production, wherein after the hot waste gas heats the water in the water storage tank (3), the temperature is lowered, then the hot waste gas enters a spray tower (4) through a concentrated tube (33), the spray tower (4) sprays the hot waste gas for treating dust and impurities in the hot waste gas, the sprayed hot waste gas enters a drying box (35) through a first return tube (34), and drying the hot waste gas through a plurality of air drying layers (36) to remove moisture in the hot waste gas;
s3, the dried gas still has a certain temperature, then the gas is discharged into a tube bundle dryer (1), the gas is heated again by the tube bundle dryer (1) for drying grains, and the gas entering the tube bundle dryer (1) has higher temperature compared with the outside air, so that the consumed electric energy can be reduced when the tube bundle dryer (1) heats hot gas for drying operation;
S4, when the preheating cylinder (8) rotates to preheat grains in the preheating cylinder (8), the preheating cylinder (8) can drive the sieve plate (18) to rotate, when the sieve plate (18) is aligned with the collecting tank (19), dust and impurities in snacks fall into the collecting tank (19) through the sieve plate (18), the grains are primarily filtered, and the dust and impurities in the grains are prevented from adhering to the inner wall of a pipeline along with the flow of hot gas when the grains are dried in a later stage, so that the pipeline is blocked and the heat exchange efficiency is influenced;
s5, when the preheating cylinder (8) drives the sieve plate (18), the discharge opening (20) and the exhaust groove (24) to correspond, hot waste gas enters the exhaust groove (24) through the sieve plate (18), the discharge opening (20) and the exhaust groove (24), upward-gushed hot waste gas can be subjected to preliminary filtration through the air filter screen (25), large-particle impurities in the hot waste gas can be filtered, the large-particle impurities are prevented from blocking a pipeline, then a second induced draft fan (30) is arranged, and the hot waste gas filtered in the exhaust groove (24) is discharged into a spray tower (4) through a shunt tube (39) to be sprayed;
s6, after the grain waste heat treatment in the preheating cylinder (8) is finished, the preheating cylinder (8) drives the discharge opening (20) to rotate and align with the discharge groove (21), the blocking plate (22) is pulled outwards, grains in the preheating cylinder (8) enter the tube bundle dryer (1) through the discharge groove (21) and the feed pipe (23), and the consumption of energy sources can be reduced when the grains are dried by the later tube bundle dryer (1) because the grains are preheated;
And S7, when the valve (40) is opened in winter, hot air in the second return pipe (38) enters the sterilizing box (41) through the shunt pipe (39), the hot air is sterilized and disinfected through the ultraviolet sterilizing lamp (42), and then the sterilized and disinfected hot air is discharged into a factory workshop and an office, so that a worker can supply heating air.
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| CN113405334A (en) * | 2021-07-05 | 2021-09-17 | 江苏格兰特干燥浓缩设备有限公司 | Uniform heating equipment for tube bundle dryer |
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