CN113623964A - Material drying system utilizing waste heat of tail gas of gas boiler - Google Patents
Material drying system utilizing waste heat of tail gas of gas boiler Download PDFInfo
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- CN113623964A CN113623964A CN202110962724.4A CN202110962724A CN113623964A CN 113623964 A CN113623964 A CN 113623964A CN 202110962724 A CN202110962724 A CN 202110962724A CN 113623964 A CN113623964 A CN 113623964A
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- waste heat
- tail gas
- boiler
- pipe
- drying
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
- F26B11/04—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
- F26B11/022—Arrangements of drives, bearings, supports
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/10—Heating arrangements using tubes or passages containing heated fluids, e.g. acting as radiative elements; Closed-loop systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/001—Handling, e.g. loading or unloading arrangements
- F26B25/002—Handling, e.g. loading or unloading arrangements for bulk goods
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
- F26B25/14—Chambers, containers, receptacles of simple construction
- F26B25/16—Chambers, containers, receptacles of simple construction mainly closed, e.g. drum
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
- F28D7/082—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/24—Arrangements for promoting turbulent flow of heat-exchange media, e.g. by plates
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention provides a material drying system utilizing waste heat of tail gas of a gas boiler, belonging to the technical field of material drying equipment and comprising a drying mechanism, wherein the drying mechanism comprises an outer heat-insulating cylinder and a rotary drying cylinder arranged in the outer heat-insulating cylinder, a rotary guide bracket for supporting the rotary drying cylinder is arranged in the outer heat-insulating cylinder, and a heating cavity is formed between the outer heat-insulating cylinder and the rotary drying cylinder; one end of the drying mechanism is provided with a power machine case, a power component for driving the rotary drying cylinder body to rotate is arranged in the power machine case, and the other end of the drying mechanism is provided with a material collecting device; a heating cavity in the drying mechanism is communicated with the boiler tail gas waste heat insulation box, the upper end and the lower end of the boiler tail gas waste heat insulation box are both provided with ventilating pipe orifices, and a first fan is arranged between the drying mechanism and the boiler tail gas waste heat insulation box; the tail gas waste heat drying device can be used for drying materials by using the tail gas waste heat before tail gas treatment, the utilization rate of the tail gas waste heat is improved, the materials are dried more uniformly, and meanwhile, the quick cooling is facilitated.
Description
Technical Field
The invention relates to the technical field of material drying equipment, in particular to a material drying system utilizing waste heat of tail gas of a gas boiler.
Background
When the boiler is in operation, tail gas discharged from a flue can be generated by waste heat, the waste heat is energy which is not utilized in energy utilization equipment under certain economic and technical conditions, namely redundant and waste energy, the waste heat recycling is an important way for improving the economy and saving fuel, and the waste heat recycling device is mainly used for recycling the waste heat.
Steel slag is a by-product of the steel-making process. It is composed of various oxides formed by oxidizing impurities in pig iron, such as silicon, manganese, phosphorus, sulfur, etc. in the smelting process, and salts generated by the reaction of these oxides and solvent. The mineral composition of the steel slag is mainly tricalcium silicate, and then dicalcium silicate, RO phase, dicalcium ferrite and free calcium oxide. The steel slag is clinker, is a remelted phase and has low melting temperature. When re-melting, the liquid phase is formed early and the fluidity is good. In the process of producing 85-grade composite mineral powder and high-activity mineral powder composite micro powder, the converter slag needs to be dried in the process of treating the converter slag.
In the existing steel slag drying process, when the steel slag is dried by using the waste heat of boiler tail gas, dust treatment and treatment of special components are required firstly, and the dried steel slag is finally introduced into a drying cylinder for drying, but the heat of the tail gas is greatly lost in the treatment process, and the heat of the tail gas is not excessively dissipated, so that the tail gas cannot be introduced into water for filtering and treating in the tail gas treatment process, and the mode of treating the boiler tail gas is limited to a certain extent; and the material after drying at present need export the back natural cooling, and the refrigerated process is longer, also has the instrument stirring to carry out auxiliary cooling, but this in-process makes the moisture in the air get into the slag miropowder easily, influences the mixed effect that later stage was used.
Disclosure of Invention
In view of this, the invention provides a material drying system using waste heat of tail gas of a gas boiler, which can dry materials by using waste heat of tail gas before tail gas treatment, so as to improve the utilization rate of waste heat of tail gas, and the materials are dried more uniformly and are convenient to cool quickly.
In order to solve the technical problem, the invention provides a material drying system utilizing waste heat of tail gas of a gas boiler, which comprises a drying mechanism, wherein the drying mechanism comprises an outer heat-insulating cylinder body and a rotary drying cylinder body arranged in the outer heat-insulating cylinder body, a material raising plate is arranged on the inner wall of the rotary drying cylinder body, a rotary guide support for supporting the rotary drying cylinder body is arranged in the outer heat-insulating cylinder body, and a heating cavity is formed between the outer heat-insulating cylinder body and the rotary drying cylinder body;
one end of the drying mechanism is provided with a power machine case, a power assembly for driving the rotary drying cylinder body to rotate is arranged in the power machine case, and the other end of the drying mechanism is provided with a material collecting device;
heating chamber and boiler tail gas waste heat insulation can intercommunication in the stoving mechanism, the upper and lower both ends of boiler tail gas waste heat insulation can all are equipped with the mouth of pipe of ventilating, be equipped with first fan between stoving mechanism and the boiler tail gas waste heat insulation can.
Furthermore, one end of the rotary drying cylinder body is provided with a feeding pipe shaft extending out of the outer heat-insulation cylinder body, the other end of the rotary drying cylinder body is provided with a discharging pipe shaft extending out of the outer heat-insulation cylinder body, the feeding pipe shaft extends into the power machine case and is driven to rotate through the power assembly, the power assembly comprises a driven gear arranged on the feeding pipe shaft, the driven gear is meshed with the driving gear, and the driving gear is connected with the first motor.
Furthermore, a detachable cover plate is arranged on an outer port of the discharging tubular shaft, a spiral conveying shaft is arranged in the feeding tubular shaft, a feeding hole is formed in one end, far away from the rotary drying barrel, of the spiral conveying shaft and the side face, close to the second motor, of one end, connected with the feeding tubular shaft, of the second motor fixed outside the power machine case, and a hinged sealing cover plate is arranged on the upper port of the power machine case.
Furthermore, the rotary guide support comprises an annular guide rail arranged on the inner wall of the outer heat-insulation barrel, an annular guide wheel corresponding to the annular guide rail is arranged on the outer wall of the rotary drying barrel, and a groove matched with the annular guide wheel is formed in the inner wall of the annular guide rail.
Furthermore, the diameter of the annular guide wheel close to one end of the discharging pipe shaft is smaller than that of the annular guide wheel close to one end of the feeding pipe shaft.
Further, be equipped with a plurality of S type breather pipes of interval arrangement in the boiler tail gas waste heat insulation can, the last port of S type breather pipe stretches out from one side of boiler tail gas waste heat insulation can and communicates with the delivery pipe of boiler tail gas, the lower port of S type breather pipe stretches out externally from the opposite side of boiler tail gas waste heat insulation can and communicates with tail gas clean-up equipment, be equipped with radiating fin on the S type breather pipe, be close to lower extreme breather pipe mouth department and be equipped with the air choked flow subassembly in the boiler tail gas waste heat insulation can.
Furthermore, a hoop for fixing the S-shaped vent pipe is arranged in the boiler tail gas waste heat insulation box.
Furthermore, the air flow blocking assembly comprises an S-shaped baffle plate, a plurality of V-shaped baffle plates are arranged on two sides of the S-shaped baffle plate, the V-shaped baffle plates are symmetrically distributed on the left and right by taking the S-shaped baffle plate as the center, the openings of the V-shaped baffle plates face the S-shaped baffle plates, and the S-shaped baffle plates and the V-shaped baffle plates are fixed in the boiler tail gas waste heat insulation box through connecting rods.
Furthermore, the air flow blocking assembly comprises a wavy panel formed by a plurality of V-shaped plates which are continuously and transversely arranged, and through holes are formed in two side surfaces of each V-shaped plate.
Furthermore, an air flow equalizing assembly matched with the boiler tail gas waste heat insulation box is arranged in the heating cavity.
Further, the air flow equalizing assembly is including locating the aspiration channel of outer heat preservation barrel inner bottom, the top of aspiration channel is equipped with the blast pipe, aspiration channel and blast pipe all run through ring rail and fixed through ring rail, the one end and the first fan intercommunication that the blast pipe is close to boiler tail gas waste heat insulation can, the one end that boiler tail gas waste heat insulation can was kept away from to the aspiration channel and the air intake intercommunication of the outer exhaust fan of heat preservation barrel, aspiration channel, blast pipe all are equipped with the notch on the side of rotatory stoving barrel of orientation.
Furthermore, the air supply pipes are arranged around the rotary drying cylinder body at intervals.
Furthermore, the calibers from one end close to the first fan to the notch at the other end on the blast pipe are reduced in sequence, and the calibers from one end close to the exhaust fan to the notch at the other end on the suction pipe are reduced in sequence.
Furthermore, the air outlet of the exhaust fan is provided with a Y-shaped connecting pipe, one of the bifurcated pipes of the Y-shaped connecting pipe is communicated with an air supplementing pipe opening on one side of the power case, the air supplementing pipe opening is provided with a valve, the spiral blade of the spiral conveying shaft is provided with a micro-air hole, and the discharging pipe shaft is provided with an air pressure gauge and an air valve.
Furthermore, the material collecting device comprises a cyclone separating collector, an air inlet of the cyclone separating collector is connected with an air outlet of the second fan through a detachable flange connecting pipe, and the second fan is fixed on the frame on the outer heat-insulating cylinder body.
Furthermore, a temporary storage bin is arranged at the bottom end of the cyclone separation collector, and a material valve is arranged at the bottom end opening of the temporary discharge bin.
The technical scheme of the invention has the following beneficial effects:
1. according to the invention, the heat of the tail gas can be directly utilized, fuel is saved, the tail gas passes through the boiler tail gas waste heat insulation box, so that the air in the boiler tail gas waste heat insulation box is heated, and then the heated air is directly conveyed into the heating cavity to heat the rotary drying cylinder, so that the heating mode that the tail gas is dried and filtered and then introduced into the drying cylinder is avoided, the drying process in the tail gas treatment process is saved, and the excessive heat loss in the treatment process is avoided.
2. In the invention, the S-shaped vent pipe in the boiler tail gas waste heat insulation box can increase the area for heating air, and in addition, the radiating fins on the upper side of the S-shaped vent pipe play a better heat conduction role, so that the air in the boiler tail gas waste heat insulation box can be heated more effectively.
3. According to the invention, the air flow blocking component in the boiler tail gas waste heat insulation box reduces the air outflow speed through the air baffling or air flow blocking situation or the combination of the air baffling and the air flow blocking situation, so that the retention time of air in the boiler tail gas waste heat insulation box is prolonged, and the air heating effect and efficiency are improved.
4. According to the invention, hot air in the boiler tail gas waste heat insulation box is uniformly blown to the surface of the rotary drying cylinder through the air supply pipeline, so that materials in the rotary drying cylinder can be heated more uniformly, the materials can be continuously lifted by the lifting blade in the rotary drying cylinder and fully contacted with the rotary drying cylinder to play a drying role, air in the heating cavity is sucked out through the air suction pipe, and the hot air is continuously fed into the heating cavity.
5. According to the invention, damp and hot air in the rotary drying cylinder is timely discharged through the steam valve, because the temperature in the heating cavity is higher than the external temperature, one of the bifurcated pipes of the Y-shaped connecting pipe is communicated with the air supplementing pipe opening on one side of the power case, and air with relatively high temperature is supplemented into the rotary drying cylinder through the feeding hole and the micro-pores arranged on the spiral blades, so that the drying efficiency and effect are provided.
6. In the invention, the cyclone separation collector is used for sucking out, separating and collecting the micro powder material in the rotary drying cylinder, thus being convenient and fast.
Drawings
FIG. 1 is a schematic structural diagram of a material drying system using waste heat of tail gas of a gas boiler according to the present invention;
FIG. 2 is a schematic structural diagram of a drying mechanism according to the present invention;
FIG. 3 is a side view of the arrangement of the suction pipes and the blowing pipes in the present invention;
FIG. 4 is a side view of the air supply duct of the present invention;
FIG. 5 is a side view of the cover plate of the present invention;
FIG. 6 is a perspective view of the power housing of the present invention;
FIG. 7 is a schematic structural diagram of a boiler tail gas waste heat insulation box according to the present invention;
FIG. 8 is a front perspective view of the boiler tail gas waste heat insulation can of the present invention;
FIG. 9 is a schematic view of one embodiment of an air blocker assembly according to the present disclosure;
FIG. 10 is a second schematic view of an air blocker assembly according to the present invention;
FIG. 11 is a schematic view showing the construction of a screw feeding shaft according to the present invention;
fig. 12 is a front view of a material collection device of the present invention.
2. A boiler tail gas waste heat insulation box; 201. a vent tube orifice; 202. an S-shaped vent pipe; 203. a heat dissipating fin; 204. clamping a hoop; 21. a first fan; 22. an air flow resisting assembly; 220. a connecting rod; 221. an S-shaped baffle plate; 222. a V-shaped baffle plate; 223. a V-shaped plate; 224. a wave-shaped panel; 225. a through hole;
3. a power chassis; 31. a first motor; 311. a driving gear; 32. a spiral delivery shaft; 33. a second motor; 34. sealing the cover plate; 35. the mouth of the air supply pipe;
4. a drying mechanism; 5. rotating the drying cylinder; 51. a feed pipe shaft; 511. a driven gear; 512. a feed inlet; 52. a discharging pipe shaft; 521. a cover plate; 522. a barometer; 523. an air valve; 53. an annular guide wheel;
6. an outer heat-insulating cylinder; 61. an annular guide rail; 611. a groove; 62. an air suction pipe; 63. an air supply pipe; 64. an exhaust fan; 641. a Y-shaped connecting pipe; 65. a notch;
7. a cyclonic separation collector; 701. a temporary storage silo; 702. a material valve; 71. a flange connecting pipe; 72. a second fan; .
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 12 of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.
As shown in fig. 1: a material drying system utilizing waste heat of tail gas of a gas boiler comprises a drying mechanism 4, wherein the drying mechanism 4 comprises an outer heat-insulating cylinder body 6 and a rotary drying cylinder body 5 arranged in the outer heat-insulating cylinder body 6, a material raising plate is arranged on the inner wall of the rotary drying cylinder body 5, a rotary guide support for supporting the rotary drying cylinder body 5 is arranged in the outer heat-insulating cylinder body 6, and a heating cavity is formed between the outer heat-insulating cylinder body 6 and the rotary drying cylinder body 5;
one end of the drying mechanism 4 is provided with a power machine case 3, a power assembly for driving the rotary drying cylinder 5 to rotate is arranged in the power machine case 3, and the other end of the drying mechanism 4 is provided with a material collecting device;
heating chamber and boiler tail gas waste heat insulation can 2 intercommunication in the stoving mechanism 4, and the upper and lower both ends of boiler tail gas waste heat insulation can 2 all are equipped with mouth of pipe 201 of ventilating, be equipped with first fan 21 between stoving mechanism 4 and the boiler tail gas waste heat insulation can 2.
Utilize tail gas to pass through boiler tail gas waste heat insulation can 2 for the air in boiler tail gas waste heat insulation can 2 is heated, then directly carries to the heating intracavity and heats rotatory drying barrel 5, avoids tail gas through the drying, filter the back and lets in the heating method in the drying cylinder, saves the drying process among the tail gas processing, avoids simultaneously in the processing procedure, the heat is lost too much.
According to one embodiment of the invention, as shown in figures 2, 5 and 6,
the drying device comprises a rotary drying cylinder body 5, a feeding pipe shaft 51 extending out of an outer heat-insulation cylinder body 6 is arranged at one end of the rotary drying cylinder body 5, a discharging pipe shaft 52 extending out of the outer heat-insulation cylinder body 6 is arranged at the other end of the rotary drying cylinder body 5, the feeding pipe shaft 51 extends into a power cabinet 3 and is driven to rotate through a power assembly, the power assembly comprises a driven gear 511 arranged on the feeding pipe shaft 51, the driven gear 511 is meshed with a driving gear 311, and the driving gear 311 is connected with a first motor 31.
The outer port of the discharge pipe shaft 52 is provided with a detachable cover plate 521, the feed pipe shaft 51 is internally provided with a spiral conveying shaft 32, one end of the spiral conveying shaft 32, which is far away from the rotary drying cylinder 5, is connected with the second motor 33 fixed outside the power machine case 3, the side surface of one end, which is close to the second motor 33, of the feed pipe shaft 51 is provided with a feed port 512, and the upper port of the power machine case 3 is provided with a hinged sealing cover plate 34.
The feeding and discharging structure of the rotary drying cylinder 5 is reasonable and convenient in design and convenient to use.
According to another embodiment of the present invention, as shown in figures 1 and 2,
the rotary guide support comprises an annular guide rail 61 arranged on the inner wall of the outer heat-insulation barrel 6, an annular guide wheel 53 corresponding to the annular guide rail 61 is arranged on the outer wall of the rotary drying barrel 5, and a groove 611 matched with the annular guide wheel 53 is arranged on the inner wall of the annular guide rail 61.
Wherein the diameter of the annular guide wheel 53 near one end of the discharge pipe shaft 52 is smaller than that of the annular guide wheel 53 near one end of the feed pipe shaft 51.
The guide wheel of the annular guide rail 61 and the annular guide wheel 53 is matched to improve the rotating stability of the rotary drying cylinder body 5, the running stability of the whole device is improved, the service life of the device is prolonged, and the maintenance frequency is reduced.
In one embodiment of the invention, as shown in figures 7 and 8,
the boiler tail gas waste heat insulation box 2 is internally provided with a plurality of S-shaped vent pipes 202 which are arranged at intervals, the upper end ports of the S-shaped vent pipes 202 extend out of one side of the boiler tail gas waste heat insulation box 2 and are communicated with a discharge pipe of boiler tail gas, the lower end ports of the S-shaped vent pipes 202 extend out of the other side of the boiler tail gas waste heat insulation box 2 and are communicated with tail gas purification equipment, the S-shaped vent pipes 202 are provided with radiating fins 203, and an air flow blocking component 22 is arranged in the boiler tail gas waste heat insulation box 2 close to a lower end vent pipe opening 201.
A clamp 204 for fixing the S-shaped vent pipe 202 is arranged in the boiler tail gas waste heat insulation box 2.
The S-shaped vent pipe 202 in the boiler tail gas waste heat insulation box 2 can increase the area for heating air, and in addition, the radiating fins 203 on the S-shaped vent pipe 202 play a better heat conduction role, so that the air in the boiler tail gas waste heat insulation box 2 can be effectively heated.
In one embodiment of the present invention, as shown in figure 9,
the air flow blocking assembly is an S-shaped baffle plate 221, a plurality of V-shaped baffle plates 222 are arranged on two sides of the S-shaped baffle plate 221, the V-shaped baffle plates 222 are symmetrically distributed on the left and right by taking the S-shaped baffle plate 221 as the center, openings of the V-shaped baffle plates 222 face the S-shaped baffle plate 221, and the S-shaped baffle plate 221 and the V-shaped baffle plates 222 are fixed in the boiler tail gas waste heat insulation box 2 through connecting rods 220.
In another embodiment of the present invention, as shown in figure 10,
wherein, the air choke assembly 22 comprises a wave-shaped panel 224 formed by a plurality of V-shaped plates 223 which are continuously and transversely arranged, and through holes 225 are arranged on two sides of each V-shaped plate 223.
In one embodiment of the invention, as shown in FIGS. 2, 3 and 4
Wherein, be equipped with the air subassembly that flow equalizes of cooperation boiler tail gas waste heat insulation can 2 in the heating chamber.
Wherein, the air current equalizing assembly is including locating aspiration channel 62 of outer heat preservation barrel 6 interior bottom, aspiration channel 62's top is equipped with the blast pipe 63, aspiration channel 62 and blast pipe 63 all run through circular guide 61 and fixed through circular guide 61, the one end and the first fan 21 intercommunication that blast pipe 63 is close to boiler tail gas waste heat insulation can 2, the one end that boiler tail gas waste heat insulation can 2 was kept away from to aspiration channel 62 and the outer air intake intercommunication of exhaust fan 64 of outer heat preservation barrel 6, aspiration channel 62, blast pipe 63 all are equipped with notch 65 towards on the side of rotatory drying barrel 5.
The air supply pipes 63 are arranged around the rotary drying drum 5 at intervals.
The diameters of the air supply pipe 63 from one end close to the first fan 21 to the notch 65 at the other end are sequentially reduced, and the diameters of the air suction pipe 62 from one end close to the exhaust fan 64 to the notch 65 at the other end are sequentially reduced.
Even blowing of hot-air in with boiler tail gas waste heat insulation can 2 to the surface of rotatory drying barrel 5 through blast pipe 63 for the material in the rotatory drying barrel 5 can more even heating, the lifting blade in the rotatory drying barrel 5 can be with the continuous raising of material, fully with the contact of rotatory drying barrel 5, play the effect of stoving, through aspiration channel 62 to the air that will heat the intracavity at the suction, guarantee to heat the intracavity continuation send into hot-air.
In one embodiment of the invention, as shown in figures 1 and 11,
the exhaust fan 64 is provided with a Y-shaped connecting pipe 641 at the exhaust outlet, one of the bifurcated pipes of the Y-shaped connecting pipe 641 is communicated with the air supply pipe orifice 35 at one side of the power machine case 3, the air supply pipe orifice 35 is provided with a valve, the spiral blades of the spiral conveying shaft 32 are provided with micro-pores, and the discharging pipe shaft 52 is provided with a barometer 522 and a pneumatic valve 523.
The damp and hot air in the rotary drying cylinder 5 is discharged in time through the air valve 523, because the temperature in the heating cavity is higher than the external temperature, one of the branch pipes of the Y-shaped connecting pipe 641 is communicated with the air supply pipe opening 35 on one side of the power case 3, and the air with relatively dry temperature is supplied into the rotary drying cylinder 5 through the feed inlet 512 and the micro-pores arranged on the spiral blades, so that the drying efficiency and effect are provided.
In one embodiment of the present invention, as shown in figure 1,
the material collecting device comprises a cyclone separating collector 7, an air inlet of the cyclone separating collector 7 is connected with an air outlet of a second fan 72, a detachable flange connecting pipe 71 is arranged at an air suction opening of the second fan 72, and the second fan 72 is fixed on a rack 73 on the outer heat-insulating cylinder 6.
The bottom end of the cyclone separation collector 7 is provided with a temporary storage bin 701, and a bottom port of the temporary discharge bin 701 is provided with a material valve 702.
The working method of the invention comprises the following steps: when the device is used, the heating cavity and the rotary drying cylinder 5 are preheated by the action of the boiler tail gas waste heat insulation box 2, then the sealing cover plate 34 is opened, the steel slag micro powder to be dried is placed into the feeding pipe shaft 51 from the feeding hole 512 and is conveyed into the rotary drying cylinder 5 without the action of the spiral conveying shaft 32, after certain materials are conveyed, the sealing cover plate 34 is sealed and closed, then the first motor 31 is started, the rotary drying cylinder 5 is driven to rotate, hot air is continuously estimated into the heating cavity by the action of the first fan 21 in the rotating process of the rotary drying cylinder 5, the air flow blocking component 22 in the boiler tail gas waste heat insulation box 2 reduces the flowing speed of the air by the shape and the shape of air baffling or air flow blocking or the combination of the air baffling, so that the staying time of the air in the boiler tail gas waste heat insulation box 2 is prolonged, improve the effect and the efficiency of air heating, when hot-air sent into the heating intracavity, blow hot-air to rotatory stoving barrel 5 through blast pipe 63 on, improve the degree of consistency of heating through spaced notch 65, improve the effect and the efficiency of drying, discharge the air that will heat the intracavity through aspiration channel 62 simultaneously, guarantee that hot-air can last send into the heating intracavity.
In the process of heating and drying, the air pressure in the rotary drying cylinder 5 is known through the air pressure gauge 522, moist and hot steam is discharged through the air valve 523 after one end is heated for a while, then one of the bifurcated pipes of the Y-shaped connecting pipe 641 is communicated with the air supply pipe opening 35 on one side of the power case 3, and dry air with relative temperature is supplied into the rotary drying cylinder 5 through the micro-air holes arranged on the feeding port 512 and the spiral blades, so that the drying efficiency and effect are provided.
After the material is dried, the material can be adjusted through a valve, tail gas is prevented from being continuously introduced into the S-shaped vent pipe 202, normal-temperature gas is introduced into the heating cavity, the auxiliary material is cooled, the material is required to be output, the cover plate 521 is detached, the rotary drying barrel 5 is communicated with the cyclone separation collector 7 through the flange connecting pipe 71, the sealing cover plate 34 is opened at the same time, the second fan 72 is started, negative pressure is formed in the cyclone separation collector 7, the material enters the cyclone separation collector 7, the cyclone separation collector 7 can separate particles with the diameter larger than 10 mu m, the particle size of steel slag micro powder is 80-150 mu m, the material collection can be realized through the action of the cyclone separation collector 7, a dust bag can be connected at an air outlet at the upper end of the cyclone separation collector 7 for filtering, and trace escape of fine powder is avoided.
In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly attached, detachably attached, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides an utilize material drying system of gas boiler tail gas waste heat which characterized in that: the drying device comprises a drying mechanism (4), wherein the drying mechanism (4) comprises an outer heat-insulating cylinder body (6) and a rotary drying cylinder body (5) arranged in the outer heat-insulating cylinder body (6), a rotary guide support for supporting the rotary drying cylinder body (5) is arranged in the outer heat-insulating cylinder body (6), and a heating cavity is formed between the outer heat-insulating cylinder body (6) and the rotary drying cylinder body (5);
one end of the drying mechanism (4) is provided with a power machine case (3), a power assembly for driving the rotary drying cylinder (5) to rotate is arranged in the power machine case (3), and the other end of the drying mechanism (4) is provided with a material collecting device;
heating chamber and boiler tail gas waste heat insulation can (2) intercommunication in the stoving mechanism (4), the upper and lower both ends of boiler tail gas waste heat insulation can (2) all are equipped with mouth of pipe (201) of ventilating, be equipped with first fan (21) between stoving mechanism (4) and boiler tail gas waste heat insulation can (2).
2. The material drying system using waste heat of exhaust gas of a gas boiler as claimed in claim 1, wherein: one end of the rotary drying cylinder body (5) is provided with a feeding pipe shaft (51) extending out of the outer heat-insulation cylinder body (6), the other end of the rotary drying cylinder body (5) is provided with a discharging pipe shaft (52) extending out of the outer heat-insulation cylinder body (6), the feeding pipe shaft (51) extends into the power cabinet (3) and is driven to rotate through a power assembly, the power assembly comprises a driven gear (511) arranged on the feeding pipe shaft (51), the driven gear (511) is meshed with the driving gear (311), and the driving gear (311) is connected with the first motor (31).
3. The material drying system using waste heat of exhaust gas of a gas boiler as claimed in claim 2, wherein: be equipped with detachable apron (521) on the outer port of ejection of compact hollow shaft (52), be equipped with spiral conveying axle (32) in feeding hollow shaft (51), the one end that rotatory drying barrel (5) was kept away from in spiral conveying axle (32) is connected feeding hollow shaft (51) with second motor (33) of power machine case (3) external fixation and is gone up the one end side that is close to second motor (33) and be equipped with feed inlet (512), the last port of power machine case (3) is equipped with articulated sealed apron (34).
4. The material drying system using waste heat of exhaust gas of a gas boiler as claimed in claim 3, wherein: the rotary guide support comprises an annular guide rail (61) arranged on the inner wall of the outer heat-insulation barrel body (6), an annular guide wheel (53) corresponding to the annular guide rail (61) is arranged on the outer wall of the rotary drying barrel body (5), and a groove (611) matched with the annular guide wheel (53) is formed in the inner wall of the annular guide rail (61).
5. The material drying system using waste heat of exhaust gas of a gas boiler as claimed in claim 4, wherein: be equipped with a plurality of S type breather pipes (202) of interval arrangement in boiler tail gas waste heat insulation can (2), the delivery pipe intercommunication with boiler tail gas is stretched out from one side of boiler tail gas waste heat insulation can (2) to the last port of S type breather pipe (202), the lower port of S type breather pipe (202) stretches out externally and tail gas clean-up equipment intercommunication from the opposite side of boiler tail gas waste heat insulation can (2), be equipped with radiating fin (203) on S type breather pipe (202), be close to lower extreme mouth of pipe (201) department of ventilating in boiler tail gas waste heat insulation can (2) and be equipped with air choked flow subassembly (22).
6. The material drying system using waste heat of exhaust gas of a gas boiler as claimed in claim 5, wherein: the air flow blocking assembly comprises an S-shaped baffle plate (221), a plurality of V-shaped baffle plates (222) are arranged on two sides of the S-shaped baffle plate (221), the V-shaped baffle plates (222) are symmetrically distributed on the left and right by taking the S-shaped baffle plate (221) as the center, openings of the V-shaped baffle plates (222) face the S-shaped baffle plate (221), and the S-shaped baffle plate (221) and the V-shaped baffle plate (222) are fixed in the boiler tail gas waste heat insulation box (2) through connecting rods (220).
7. The material drying system using waste heat of exhaust gas of gas boiler as claimed in claim 6, wherein: the air flow blocking assembly (22) comprises a wavy panel (224) formed by a plurality of V-shaped plates (223) in a continuous and transverse arrangement mode, and through holes (225) are formed in two side faces of each V-shaped plate (223).
8. The material drying system using waste heat of exhaust gas of a gas boiler as set forth in any one of claims 3 to 7, wherein: an air flow equalizing assembly matched with the boiler tail gas waste heat insulation box (2) is arranged in the heating cavity.
9. The material drying system using waste heat of exhaust gas of a gas boiler as claimed in claim 8, wherein: air flow equalizing assembly is including locating aspiration channel (62) of outer heat preservation barrel (6) inner bottom, the top of aspiration channel (62) is equipped with blast pipe (63), aspiration channel (62) and blast pipe (63) all run through circular guide (61) and are fixed through circular guide (61), one end and first fan (21) intercommunication that blast pipe (63) are close to boiler tail gas waste heat insulation can (2), the one end of boiler tail gas waste heat insulation can (2) and the air intake intercommunication of outer exhaust fan (64) of heat preservation barrel (6) are kept away from in aspiration channel (62), blast pipe (63) all are equipped with notch (65) on the side of rotatory drying barrel (5) towards.
10. The material drying system using waste heat of exhaust gas of a gas boiler as claimed in claim 9, wherein: the utility model discloses a fan of fan, including exhaust fan (64), one of them bifurcated pipe of Y type connecting pipe (641) is equipped with Y type connecting pipe (641) in the air outlet department of exhaust fan (64), one of them bifurcated pipe of Y type connecting pipe (641) communicates with air supply pipe mouth (35) of engine case (3) one side, be equipped with the valve on air supply pipe mouth (35), be equipped with the micropore on the spiral leaf of spiral conveying axle (32), be equipped with barometer (522) and pneumatic valve (523) on ejection of compact hollow shaft (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110962724.4A CN113623964A (en) | 2021-08-20 | 2021-08-20 | Material drying system utilizing waste heat of tail gas of gas boiler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110962724.4A CN113623964A (en) | 2021-08-20 | 2021-08-20 | Material drying system utilizing waste heat of tail gas of gas boiler |
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| CN113623964A true CN113623964A (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110962724.4A Pending CN113623964A (en) | 2021-08-20 | 2021-08-20 | Material drying system utilizing waste heat of tail gas of gas boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151782A (en) * | 2021-12-02 | 2022-03-08 | 上海岳合机电科技有限公司 | Automatic heat recovery equipment that clears up of big dust of biological boiler |
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| CN2703240Y (en) * | 2004-06-30 | 2005-06-01 | 咸宁市咸安科隆粮油食品机械厂 | Environment protection energy-saving automatic controlling temperature rotary drum type baking and frying machine |
| CN209989597U (en) * | 2019-05-30 | 2020-01-24 | 肖培尧 | Heat pump type clothes dryer utilizing industrial waste heat |
| CN212619808U (en) * | 2020-07-16 | 2021-02-26 | 江苏上阳金属新材料有限公司 | Copper powder drying equipment |
| CN213020960U (en) * | 2020-08-04 | 2021-04-20 | 鲁山亚星科技发展有限公司 | Kiln with heat recovery function |
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2021
- 2021-08-20 CN CN202110962724.4A patent/CN113623964A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2703240Y (en) * | 2004-06-30 | 2005-06-01 | 咸宁市咸安科隆粮油食品机械厂 | Environment protection energy-saving automatic controlling temperature rotary drum type baking and frying machine |
| CN209989597U (en) * | 2019-05-30 | 2020-01-24 | 肖培尧 | Heat pump type clothes dryer utilizing industrial waste heat |
| CN212619808U (en) * | 2020-07-16 | 2021-02-26 | 江苏上阳金属新材料有限公司 | Copper powder drying equipment |
| CN213020960U (en) * | 2020-08-04 | 2021-04-20 | 鲁山亚星科技发展有限公司 | Kiln with heat recovery function |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114151782A (en) * | 2021-12-02 | 2022-03-08 | 上海岳合机电科技有限公司 | Automatic heat recovery equipment that clears up of big dust of biological boiler |
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