CN112393627A - Low-temperature dew point corrosion resistant waste heat recovery device of suspension roasting furnace - Google Patents
Low-temperature dew point corrosion resistant waste heat recovery device of suspension roasting furnace Download PDFInfo
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- CN112393627A CN112393627A CN202011192451.1A CN202011192451A CN112393627A CN 112393627 A CN112393627 A CN 112393627A CN 202011192451 A CN202011192451 A CN 202011192451A CN 112393627 A CN112393627 A CN 112393627A
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- wall
- heat recovery
- dew point
- corrosion resistant
- shell
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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
- F28D7/02—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 helically coiled
- F28D7/024—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 helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
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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
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/01—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using means for separating solid materials from heat-exchange fluids, e.g. filters
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention relates to the technical field of heat recovery equipment, and discloses a low-temperature dew point corrosion resistant waste heat recovery device of a suspension roasting furnace, which comprises a shell, wherein the inner wall of the shell is fixedly connected with an inner shell, the outer wall of the inner shell and the inner wall of the shell are filled with a heat insulation layer, the upper surface and the lower surface of the shell are both provided with fixing through holes, the hole walls of the fixing through holes are fixedly connected with heat conduction coil pipes, the upper surface and the lower surface of the shell are respectively communicated with a first valve and a second valve, the outer wall of the top end of the first valve is fixedly communicated with a pipe inlet, and the outer wall of. This low temperature dew point corrosion resistant waste heat recovery device is baked burning furnace over a suspension can directly carry out heat recovery through heat conduction coil pipe, and secondary heat recovery can improve device heat recovery's effect to can avoid thermal waste, and improve the thermal rate of recovery of low temperature dew point corrosion resistant waste heat recovery device over a suspension burning furnace.
Description
Technical Field
The invention relates to the technical field of heat recovery equipment, in particular to a low-temperature dew point corrosion resistant waste heat recovery device for a suspension roasting furnace.
Background
The suspension roasting furnace is an important process equipment for copper and aluminum smelting in non-ferrous metallurgy enterprises at present, the exhaust gas temperature of high-temperature flue gas generated in the combustion process of the suspension roasting furnace after partial utilization still reaches 150-200 ℃, waste heat recovery is not generally carried out at present, in the present stage, a flat disc washing water system in the process flow also needs hot water, the hot water with certain temperature and flow rate is obtained by adopting a steam heating water mode at present, and a part of enterprises adopt an efficient heater technology, namely, the steam and the water directly exchange heat sufficiently to generate the hot water meeting the process requirements, so that the normal operation of a production system is ensured.
The low temperature dew point corrosion resistant waste heat recovery device of the existing suspension roasting furnace carries out heat recovery conversion through the heat exchanger, but the heat exchange effect of the heat exchanger is poor, a large amount of heat is still discharged along with flue gas, and the heat recovery rate of the device is low, and meanwhile, the heat recovery effect of the device is influenced.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a low-temperature dew point corrosion resistant waste heat recovery device of a suspension roasting furnace, which has the advantages that heat recovery can be directly carried out through a heat conduction coil, secondary heat recovery can improve the heat recovery effect of the device, waste of heat can be avoided, the heat recovery rate of the low-temperature dew point corrosion resistant waste heat recovery device of the suspension roasting furnace is improved, and the like, and the problems that the heat exchange effect of a heat exchanger in the conventional low-temperature dew point corrosion resistant waste heat recovery device of the suspension roasting furnace is poor, a large amount of heat is still discharged along with flue gas, the heat recovery rate of the device is low, and the heat recovery effect of the device.
(II) technical scheme
In order to realize the purposes that the heat recovery can be directly carried out through the heat conducting coil, the secondary heat recovery can improve the heat recovery effect of the device, the waste of heat can be avoided, and the heat recovery rate of the low-temperature dew point corrosion resistant waste heat recovery device of the suspension roasting furnace is improved, the invention provides the following technical scheme: a low-temperature dew point corrosion resistant waste heat recovery device of a suspension roasting furnace comprises a shell, wherein an inner shell is fixedly connected to the inner wall of the shell, a heat insulation layer is filled between the outer wall of the inner shell and the inner wall of the shell, fixing through holes are formed in the upper surface and the lower surface of the shell, a heat conduction coil pipe is fixedly connected to the wall of each fixing through hole, the upper surface and the lower surface of the shell are respectively communicated with a first valve and a second valve, the outer wall of the top end of the first valve is fixedly communicated with a pipe inlet, a preheating mechanism is fixedly sleeved on the outer wall of the pipe inlet, the bottom end of the preheating mechanism is fixedly communicated with the upper surface of the heat conduction coil pipe, a plurality of supporting legs are fixedly connected to the outer wall of the shell, an L-shaped plate is fixedly connected to the outer wall of one of the supporting legs, filtering mechanisms are fixedly communicated with the, and the bottom ends of the two filtering mechanisms are jointly and fixedly communicated with a connecting mechanism.
Preferably, the preheating mechanism comprises an outer cover fixedly sleeved with the outer wall of the inlet pipe, the bottom end of the outer cover is fixedly communicated with the top end of the heat conducting coil pipe, the outer wall of the outer cover is fixedly communicated with a guide pipe, the bottom end of the guide pipe is fixedly communicated with a flue gas treatment device, the outer wall of the flue gas treatment device is fixedly connected with the outer wall of the shell, an exhaust hole of the flue gas treatment device is fixedly communicated with an exhaust pipe, and the outer wall of the outer cover is fixedly connected with a first heat-resisting layer.
Preferably, the filtering mechanism comprises a filter cartridge fixedly connected with the outer wall of the L-shaped plate, the upper surface of the filter cartridge is provided with a fixing through hole, the hole wall of the fixing through hole is fixedly communicated with a third valve, the top end of the third valve is fixedly communicated with the output end of the three-way pipe, the output end of the third valve is movably sleeved with a filter element, the inner wall of the filter element is movably connected with a support ring, the lower surface of the support ring is fixedly connected with a stop block, the upper surface of the stop block is fixedly connected with a threaded ring, the inner wall at the bottom end of the filter cartridge is provided with connecting threads, the outer wall of the threaded ring is in threaded connection with the inner wall of the filter cartridge.
Preferably, the connecting mechanism comprises L-shaped pipes fixedly communicated with the output end of the fourth valve, the bottom ends of the two L-shaped pipes are jointly and fixedly communicated with hollow blocks, the side walls of the hollow blocks are fixedly connected with the outer walls of the supporting legs, supporting pipes are fixedly communicated with the upper surfaces of the hollow blocks, and the upper surfaces of the supporting pipes are fixedly communicated with the bottom end of the heat conducting coil pipe.
Preferably, the outer wall of the filter cylinder is fixedly sleeved with a second heat-resistant layer.
Preferably, the second heat-resistant layer, the first heat-resistant layer and the heat-insulating layer are all made of heat-insulating sponge.
Preferably, the lower surface of the stop block is fixedly connected with a rotating block.
Preferably, the upper surface of the threaded ring is fixedly connected with a sealing ring, and the outer wall of the sealing ring is movably connected with the inner wall of the filter cylinder.
Preferably, the output end of the exhaust pipe is movably sleeved with a filter cloth, and the outer wall of the filter cloth is fixedly sleeved with a fixing ring.
(III) advantageous effects
Compared with the prior art, the invention provides a low-temperature dew point corrosion resistant waste heat recovery device of a suspension roasting furnace, which has the following beneficial effects:
the low-temperature dew point corrosion resistant waste heat recovery device for the suspension roasting furnace is provided with a shell, a heat conducting coil, a filtering mechanism and a preheating mechanism, when the suspension roasting furnace discharges smoke and recovers the waste heat of the smoke, a smoke discharge pipeline is communicated in a three-way pipe, then a third valve and a fourth valve which are on the same side are opened, a filter element between the third valve and the fourth valve is started to filter the smoke, so that dust in the smoke is intercepted, the dust in the smoke is prevented from entering the heat conducting coil, meanwhile, the dust is prevented from attaching to the inner wall of the heat conducting coil to influence the heat conducting efficiency of the heat conducting coil, then the smoke with heat enters the heat conducting coil through the connecting mechanism, then the first valve is opened, cold water is added into the shell through an inlet pipe, the heat of the heat conducting coil directly heats the cold water through the heat conducting coil, the heat is recycled, in addition, the smoke enters, surplus heat carries out reheating recovery to advancing intraductal water in the flue gas, make the water preheat, avoid causing thermal waste, last flue gas is through carrying out the flue gas treatment in getting into flue gas treatment facility through the pipe, last qualified gas passes through the blast pipe and discharges, in addition, filtering mechanism work before the filtering mechanism through the opposite side replaces, make the clearance of filter core discharge in the filtering mechanism before, two filtering mechanism alternate work can ensure that the flue gas filters and continuously goes on, this mechanism can directly carry out heat recovery through heat conduction coil pipe, and secondary heat recovery can improve device heat recovery's effect, and can avoid thermal waste, and improved the thermal rate of recovery of suspension roaster furnace resistance to low temperature dew point corrosion waste heat recovery device.
Drawings
Fig. 1 is a schematic structural diagram of a low-temperature dew point corrosion resistant waste heat recovery device of a suspension roaster according to the present invention;
FIG. 2 is a schematic structural diagram of a part A of a low-temperature dew point corrosion resistant waste heat recovery device of a suspension roaster according to the present invention;
FIG. 3 is a schematic structural diagram of a part B of the low-temperature dew point corrosion resistant waste heat recovery device for the suspension roasting furnace, which is provided by the invention;
fig. 4 is a schematic structural diagram of a part C of the low-temperature dew point corrosion resistant waste heat recovery device for the suspension roasting furnace according to the present invention.
In the figure: the device comprises a shell 1, an inner shell 2, a heat insulation layer 3, a heat conduction coil 4, a first valve 5, a second valve 6, a preheating mechanism 7, an outer cover 71, a conduit 72, flue gas treatment equipment 73, an exhaust pipe 74, a first heat-resistant layer 75, a filtering mechanism 8, a filter cartridge 81, a third valve 82, a filter element 83, a support ring 84, a stop block 85, a threaded ring 86, a fourth valve 87, a connecting mechanism 9, a pipe 91L, a hollow block 92, a support pipe 93, a pipe 10, a support leg 11, a plate 12L, a three-way pipe 13, a second heat-resistant layer 14, a rotating block 15, a sealing ring 16, a filter cloth 17 and a fixing ring 18.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the 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 embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, a low-temperature dew point corrosion resistant waste heat recovery device for a suspension roasting furnace comprises a housing 1, an inner shell 2 is fixedly connected to the inner wall of the housing 1, a thermal insulation layer 3 is filled between the outer wall of the inner shell 2 and the inner wall of the housing 1, fixing through holes are formed in the upper surface and the lower surface of the housing 1, a heat conducting coil 4 is fixedly connected to the hole wall of each fixing through hole, a first valve 5 and a second valve 6 are respectively communicated with the upper surface and the lower surface of the housing 1, an inlet pipe 10 is fixedly communicated with the outer wall of the top end of the first valve 5, a preheating mechanism 7 is fixedly connected to the outer wall of the inlet pipe 10, the bottom end of the preheating mechanism 7 is fixedly communicated with the upper surface of the heat conducting coil 4, a plurality of supporting legs 11 are fixedly connected to the outer wall of the housing 1, an L-shaped plate 12 is, the top ends of the two filtering mechanisms 8 are fixedly communicated with a three-way pipe 13, and the bottom ends of the two filtering mechanisms 8 are fixedly communicated with a connecting mechanism 9.
The filtering mechanism 8 comprises a filtering cylinder 81 fixedly connected with the outer wall of the L-shaped plate 12, the upper surface of the filtering cylinder 81 is provided with a fixing through hole, the hole wall of the fixing through hole is fixedly communicated with a third valve 82, the top end of the third valve 82 is fixedly communicated with the output end of the three-way pipe 13, the output end of the third valve 82 is movably sleeved with a filtering core 83, the inner wall of the filtering core 83 is movably connected with a supporting ring 84, the lower surface of the supporting ring 84 is fixedly connected with a stopper 85, the upper surface of the stopper 85 is fixedly connected with a threaded ring 86, the inner wall at the bottom end of the filtering cylinder 81 is provided with a connecting thread, the outer wall of the threaded ring 86 is in threaded connection with the inner wall of the filtering cylinder 81, the outer wall of the filtering cylinder 81 is fixedly communicated with a fourth valve 87, the filtering mechanism 8 enables dust in the flue gas, in addition, the filtering mechanism 8 on the other side replaces the previous filtering mechanism 8 to work, so that the filter element 83 in the previous filtering mechanism 8 is discharged and cleaned, and the two filtering mechanisms 8 work alternately to ensure that the smoke filtering is continuously carried out.
The connecting mechanism 9 comprises L-shaped pipes 91 fixedly communicated with the output end of the fourth valve 87, the bottom ends of the two L-shaped pipes 91 are jointly and fixedly communicated with hollow blocks 92, the side walls of the hollow blocks 92 are fixedly connected with the outer walls of the supporting legs 11, supporting pipes 93 are fixedly communicated with the upper surfaces of the hollow blocks 92, and the upper surfaces of the supporting pipes 93 are fixedly communicated with the bottom end of the heat conducting coil pipe 4.
The outer wall of the filter cylinder 81 is fixedly sleeved with a second heat-resistant layer 14, and the second heat-resistant layer 14 can block the speed of heat exchange between the device and the outside.
The second heat-resistant layer 14, the first heat-resistant layer 75 and the heat-insulating layer 3 are all made of heat-insulating sponge, and the heat-insulating sponge can block the heat exchange speed of the device with the outside.
The rotating block 15 is fixedly connected to the lower surface of the stop block 85, and the rotating block 15 can conveniently rotate the stop block 85, so that the stop block 85 drives the threaded ring 86 to discharge.
The upper surface fixed connection of screw ring 86 has sealing ring 16, and the outer wall of sealing ring 16 and the inner wall swing joint of cartridge filter 81, sealing ring 16 can ensure the leakproofness that screw ring 86 is connected.
The output end activity of blast pipe 74 has cup jointed filter cloth 17, and filter cloth 17's outer wall is fixed to be cup jointed solid fixed ring 18, and filter cloth 17 can carry out the final filtration to the flue gas that discharges, and the guarantee flue gas that discharges can not the polluted environment, improves the feature of environmental protection of device.
In summary, when the suspension roasting furnace discharges flue gas and recovers the flue gas waste heat, the flue gas discharge pipe is first communicated in the three-way pipe 13, then the third valve 82 and the fourth valve 87 at the same side are opened, the filter element 83 between the third valve 82 and the fourth valve 87 is started to filter the flue gas, so that dust in the flue gas is intercepted, the dust in the flue gas is prevented from entering the heat conducting coil 4, meanwhile, the dust is prevented from adhering to the inner wall of the heat conducting coil 4 to influence the heat conducting efficiency of the heat conducting coil 4, then the flue gas with heat enters the heat conducting coil 4 through the connecting mechanism 9, then the first valve 5 is opened, cold water is added into the shell 1 through the inlet pipe 10, the heat of the heat conducting coil 4 directly heats the cold water through the heat conducting coil 4, the heat is recovered and utilized, and in addition, the flue gas enters the outer cover 71 through the heat conducting coil 4, surplus heat carries out reheating recovery to advancing intraductal 10 water in the flue gas, make the water preheat, avoid causing thermal waste, the flue gas carries out the flue gas treatment through getting into flue gas treatment facility 73 through pipe 72 at last, last qualified gas passes through blast pipe 74 and discharges, in addition, filtering mechanism 8 through the opposite side replaces the filtering mechanism 8 work before, filter core 83 discharges the clearance in the filtering mechanism 8 before making, two filtering mechanism 8 work in turn can ensure that the flue gas filters and continuously goes on, this mechanism can directly carry out heat recovery through heat conduction coil pipe, and secondary heat recovery can improve device heat recovery's effect, and can avoid thermal waste, and improved the thermal rate of recovery of suspension roaster furnace resistance to low temperature dew point corrosion waste heat recovery device.
It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a low temperature dew point corrosion resistant waste heat recovery device is baked burning furnace over a slow fire in suspension, includes casing (1), its characterized in that: the inner wall of the shell (1) is fixedly connected with an inner shell (2), the outer wall of the inner shell (2) and the inner wall of the shell (1) are filled with a heat insulation layer (3), fixing through holes are formed in the upper surface and the lower surface of the shell (1), a heat conduction coil pipe (4) is fixedly connected to the hole wall of each fixing through hole, the upper surface and the lower surface of the shell (1) are respectively communicated with a first valve (5) and a second valve (6), the outer wall of the top end of the first valve (5) is fixedly communicated with a pipe inlet (10), a preheating mechanism (7) is fixedly sleeved on the outer wall of the pipe inlet (10), the bottom end of the preheating mechanism (7) is fixedly communicated with the upper surface of the heat conduction coil pipe (4), the outer wall of the shell (1) is fixedly connected with a plurality of supporting legs (11), one of the supporting legs (11) is fixedly connected, the outer wall and the inner wall of the L-shaped plate (12) are fixedly communicated with filtering mechanisms (8), the top ends of the two filtering mechanisms (8) are fixedly communicated with a three-way pipe (13), and the bottom ends of the two filtering mechanisms (8) are fixedly communicated with a connecting mechanism (9).
2. The low-temperature dew point corrosion resistant waste heat recovery device of claim 1, wherein: preheating machine constructs (7) and includes and advance outer cover (71) that pipe (10) outer wall fixed cup jointed, the bottom of outer cover (71) and the fixed intercommunication in top of heat conduction coil pipe (4), the outer wall fixed intercommunication of outer cover (71) has pipe (72), the bottom mounting intercommunication of pipe (72) has flue gas treatment device (73), the outer wall of flue gas treatment device (73) and the outer wall fixed connection of casing (1), the fixed intercommunication in exhaust hole of flue gas treatment device (73) has blast pipe (74), the outer wall fixedly connected with first heat resistance layer (75) of outer cover (71).
3. The low-temperature dew point corrosion resistant waste heat recovery device of claim 1, wherein: the filtering mechanism (8) comprises a filtering cylinder (81) fixedly connected with the outer wall of the L-shaped plate (12), the upper surface of the filtering cylinder (81) is provided with a fixing through hole, and the hole wall of the fixed through hole is fixedly communicated with a third valve (82), the top end of the third valve (82) is fixedly communicated with the output end of the three-way pipe (13), the output end of the third valve (82) is movably sleeved with a filter element (83), the inner wall of the filter element (83) is movably connected with a support ring (84), the lower surface of the support ring (84) is fixedly connected with a stop block (85), the upper surface of the stop block (85) is fixedly connected with a threaded ring (86), the inner wall of the bottom end of the filter cylinder (81) is provided with connecting threads, the outer wall of the threaded ring (86) is in threaded connection with the inner wall of the filter cylinder (81), and the outer wall of the filter cylinder (81) is fixedly communicated with a fourth valve (87).
4. The low-temperature dew point corrosion resistant waste heat recovery device of claim 3, wherein: coupling mechanism (9) include with L venturi tube (91) of the fixed intercommunication of fourth valve (87) output, two the bottom of L venturi tube (91) is fixed the intercommunication jointly has hollow block (92), the lateral wall of hollow block (92) and the outer wall fixed connection of supporting leg (11), the fixed surface intercommunication of upper surface of hollow block (92) has stay tube (93), the upper surface of stay tube (93) and the bottom mounting intercommunication of heat conduction coil pipe (4).
5. The low-temperature dew point corrosion resistant waste heat recovery device of claim 3, wherein: and a second heat-resistant layer (14) is fixedly sleeved on the outer wall of the filter cylinder (81).
6. The low-temperature dew point corrosion resistant waste heat recovery device of claim 5, wherein: the second heat-resistant layer (14), the first heat-resistant layer (75) and the heat-insulating layer (3) are all made of heat-insulating sponge.
7. The low-temperature dew point corrosion resistant waste heat recovery device of claim 3, wherein: the lower surface of the stop block (85) is fixedly connected with a rotating block (15).
8. The low-temperature dew point corrosion resistant waste heat recovery device of claim 3, wherein: the upper surface of the threaded ring (86) is fixedly connected with a sealing ring (16), and the outer wall of the sealing ring (16) is movably connected with the inner wall of the filter cartridge (81).
9. The low-temperature dew point corrosion resistant waste heat recovery device of claim 2, wherein: the output end of the exhaust pipe (74) is movably sleeved with a filter cloth (17), and the outer wall of the filter cloth (17) is fixedly sleeved with a fixing ring (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011192451.1A CN112393627A (en) | 2020-10-30 | 2020-10-30 | Low-temperature dew point corrosion resistant waste heat recovery device of suspension roasting furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011192451.1A CN112393627A (en) | 2020-10-30 | 2020-10-30 | Low-temperature dew point corrosion resistant waste heat recovery device of suspension roasting furnace |
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| CN202011192451.1A Pending CN112393627A (en) | 2020-10-30 | 2020-10-30 | Low-temperature dew point corrosion resistant waste heat recovery device of suspension roasting furnace |
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Application publication date: 20210223 |
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| RJ01 | Rejection of invention patent application after publication |