Waste heat recycling device for carbide slag cement kiln
By designing a waste heat recovery device for calcium carbide slag cement kiln, the problems of low thermal efficiency and unused waste heat in the prior art are solved, and more efficient heat utilization and long life of refractory materials are achieved.
Patent Information
- Application Number
- CN202420917805.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-04-29
AI Technical Summary
The existing calcium carbide slag cement kiln is not thermally efficient in the drying process, and the residual heat at the kiln is not fully utilized, resulting in the inability to utilize the smoke and dust heat and the internal heat of the cement kiln, resulting in waste of resources.
Design a waste heat recovery device for calcium carbide slag cement kiln, including base, heat oil pump, oil conduction pipe, filter barrel, fan, heat exchange equipment and heat storage barrel, which sucks the hot smoke and dust inside the cement kiln through the fan, and then passes through heat conduction after filtering. The pipe and heat oil pump circulate waste heat.
It improves the thermal efficiency of the cement kiln drying process, makes full use of the residual heat at the kiln head, reduces resource waste, and extends the service life of refractory materials.
Smart Images
Figure CN222438538U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of industrial technology, and in particular relates to a waste heat recovery and utilization device for carbide slag cement kiln. Background Art
[0002] Carbide slag is the waste residue produced when producing acetylene gas, PVC and other products, which can be used in the production of cement clinker and the like. Due to the low decomposition temperature of carbide slag, the water vapor produced after decomposition during calcination will aggregate with gases such as RO2, SO2, Cl- in the kiln gas to form acid, alkali or salt precipitates, which will cause extremely serious chemical erosion to the refractory materials lining the smoke chamber of the carbide slag cement kiln, causing an increase in the porosity of the refractory materials, a significant reduction in strength, and a significant reduction in the service life of the refractory materials. Traditional high-alumina and clay castables use cement and silica fume as binders, and the fired refractory materials have low wear resistance and alkali corrosion resistance, poor anti-scaling performance, and a short service life, which is difficult to meet the use requirements of refractory materials in the smoke chamber of the carbide slag cement kiln. The existing carbide slag cement kiln uses a rotary dryer in the carbide slag drying process during use, resulting in low thermal efficiency, and the waste heat at the kiln head is not fully utilized, resulting in the inability to utilize the internal smoke heat and the heat inside the cement kiln, resulting in a waste of resources. Summary of the invention
[0003] In view of the shortcomings of the prior art, the utility model aims to provide a waste heat recovery and utilization device for carbide slag cement kilns, which solves the problem that the existing carbide slag cement kilns use rotary dryers in the carbide slag drying process during use, resulting in low thermal efficiency and insufficient utilization of the waste heat from the kiln head, resulting in the inability to utilize the internal smoke heat and the heat inside the cement kiln, resulting in a waste of resources.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a waste heat recovery and utilization device for a carbide slag cement kiln, comprising a base, three mounting frames are fixedly installed at the bottom of the base, a supporting frame is fixedly installed at the top of the base, a hot oil pump is fixedly installed inside the base, an oil guide pipe A is fixedly installed on the bottom side of the hot oil pump, and an oil guide pipe B is fixedly installed on the top side of the hot oil pump. A filter barrel is fixedly installed on the top of the base, a conical cover is fixedly installed on the top of the filter barrel, a heat conducting pipe A is inserted and installed on the top of the conical cover, a heat exchange device is fixedly installed at one end of the heat conducting pipe A, a heat conducting pipe B is fixedly installed at the bottom of one end of the heat conducting pipe A close to the heat exchange device, a heat exchange conduit is fixedly installed on the side of the heat exchange device, a heat storage barrel is fixedly installed at the bottom of the heat exchange device, a pre-filter is fixedly installed inside the filter barrel, a dust filter is fixedly installed inside the filter barrel, and a fan is fixedly installed inside the filter barrel.
[0005] Preferably, a fan is fixedly installed inside the filter barrel, and the specifications and dimensions of the fan are compatible with the specifications and dimensions of the inner cavity of the filter barrel.
[0006] The above technical solution has the advantage that a fan is fixedly installed inside the filter barrel, so that when the fan is working, hot smoke and dust inside the cement kiln can be sucked into the filter barrel for waste heat recovery and utilization.
[0007] Preferably, both ends of the oil guide pipe A are connected to a hot oil pump to form a circulation.
[0008] The above technical solution has the advantage that both ends of the oil pipe A are connected to the hot oil pump to form a circulation, so that the heat inside the oil pipe A is circulated, thereby recycling the waste heat inside the cement kiln through the circulating heat transfer oil.
[0009] Preferably, the heat exchange equipment, the conical cover and the heat storage barrel are connected through heat conduction pipe A and heat conduction pipe B.
[0010] The above technical solution has the advantage that the heat exchange equipment, the conical cover and the heat storage barrel are connected through the heat pipe A and the heat pipe B, so that the waste heat recovered from the conical cover and the heat storage barrel is introduced into the heat exchange equipment through the heat pipe A and the heat pipe B for heat exchange utilization.
[0011] Preferably, the oil guide pipe B and the top of the hot oil pump are installed inside the heat storage tank.
[0012] The above technical solution has the advantage that the oil pipe B and the top of the hot oil pump are installed inside the heat storage barrel, so that the waste heat recovered by the oil pipe A through the hot oil pump is stored in the heat storage barrel through the circulation of the heat transfer oil inside the oil pipe B, and then the waste heat is utilized.
[0013] Preferably, three mounting frames are fixedly mounted in an annular array at the bottom of the base.
[0014] The above technical solution has the advantage that three mounting frames are fixedly mounted in a circular array at the bottom of the base, so that the device can be installed on the top of a cement kiln for waste heat recovery and utilization.
[0015] Preferably, a pre-filter and a dust filter are fixedly installed above the fan.
[0016] The above technical solution has the advantage that a pre-filter and a dust filter are fixedly installed above the fan, so that when the fan sucks the hot smoke in the cement kiln into the filter barrel, the hot smoke rises and passes through the pre-filter and the dust filter to filter the hot smoke.
[0017] Compared with the prior art, the beneficial effects of the utility model are:
[0018] 1. When the device is in use, install the device on the top of the cement kiln through three mounting frames and a support frame, then start the fan to suck the hot smoke generated by the cement kiln into the inside of the filter barrel, and then filter it through the pre-filter and the dust filter into the inside of the conical cover, and then introduce the filtered hot gas into the heat exchange equipment through the heat pipe A for heat exchange, and start the synchronous hot oil pump to absorb the heat inside the cement kiln through the heat conduction oil inside the oil pipe A, and then circulate the heat through the hot oil pump and the liquid conduction oil inside the oil pipe B to introduce the heat into the heat storage barrel, and then the heat inside the heat storage barrel is introduced into the heat exchange equipment through the heat conduction pipe B for heat exchange.
[0019] 2. A fan is fixedly installed inside the filter barrel, so that when the fan is working, the hot smoke inside the cement kiln can be sucked into the filter barrel for waste heat recovery. Both ends of the oil pipe A are connected to the hot oil pump to form a cycle, so that the heat inside the oil pipe A is circulated, so that the waste heat inside the cement kiln is recovered through the circulating heat transfer oil. The heat exchange equipment, the conical cover and the heat storage barrel are connected through the heat transfer pipe A and the heat transfer pipe B, so that the waste heat recovered from the conical cover and the heat storage barrel is introduced into the heat exchange equipment through the heat transfer pipe A and the heat transfer pipe B for heat exchange. The oil pipe B and the top of the hot oil pump are installed inside the heat storage barrel, so that the waste heat recovered by the oil pipe A through the hot oil pump is stored in the heat storage barrel through the heat transfer oil circulation inside the oil pipe B, and then the waste heat is utilized. Three mounting frames are fixedly installed in the bottom circular array of the base, so that the device can be installed on the top of the cement kiln for waste heat recovery and utilization. A pre-filter and a dust filter are fixedly installed above the fan, so that when the fan sucks the hot smoke in the cement kiln into the filter barrel, it rises and passes through the pre-filter and the dust filter to filter the hot smoke for use. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a front view structural schematic diagram of the utility model;
[0021] Figure 2 It is a top view structural schematic diagram of the utility model;
[0022] Figure 3 This is a bottom-up three-dimensional structural schematic diagram of the utility model;
[0023] Figure 4 It is a schematic diagram of the cross-sectional three-dimensional structure of the utility model.
[0024] In the figure: 1. base; 2. mounting frame; 3. support frame; 4. oil pipe A; 5. hot oil pump; 6. filter barrel; 7. heat storage barrel; 8. heat exchange equipment; 9. heat pipe A; 10. heat exchange duct; 11. heat pipe B; 12. pre-filter; 13. dust filter; 14. fan; 15. oil pipe B; 16. conical cover. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the implementation scheme of the utility model to clearly and completely describe the technical scheme in the implementation scheme of the utility model. Obviously, the described implementation scheme is only a part of the implementation scheme of the utility model, not all the implementation schemes. Based on the implementation scheme in the utility model, all other implementation schemes obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0026] like Figure 1 - Figure 4 As shown, a waste heat recovery and utilization device for calcium carbide slag cement kiln includes a base 1, three mounting frames 2 are fixedly installed at the bottom of the base 1, a supporting frame 3 is fixedly installed at the top of the base 1, a hot oil pump 5 is fixedly installed inside the base 1, an oil guide pipe A4 is fixedly installed on the bottom side of the hot oil pump 5, and an oil guide pipe B15 is fixedly installed on the top side of the hot oil pump 5. A filter barrel 6 is fixedly installed on the top of the base 1, a conical cover 16 is fixedly installed on the top of the filter barrel 6, a heat conducting pipe A9 is inserted and installed on the top of the conical cover 16, a heat exchange device 8 is fixedly installed at one end of the heat conducting pipe A9, a heat conducting pipe B11 is fixedly installed at the bottom of one end of the heat conducting pipe A9 close to the heat exchange device 8, a heat exchange conduit 10 is fixedly installed on the side of the heat exchange device 8, a heat storage barrel 7 is fixedly installed at the bottom of the heat exchange device 8, a pre-filter 12 is fixedly installed inside the filter barrel 6, a dust filter 13 is fixedly installed inside the filter barrel 6, and a fan 14 is fixedly installed inside the filter barrel 6.
[0027] The working principle of the above technical solution is as follows:
[0028] When the device is in use, it is installed on the top of the cement kiln through three mounting frames 2 and a support frame 3, and then the fan 14 is started to suck the hot smoke generated by the cement kiln into the interior of the filter barrel 6, and then filtered through the pre-filter 12 and the dust filter 13 to enter the interior of the conical cover 16, and then the filtered hot gas is introduced into the heat exchange device 8 through the heat pipe A9 for heat exchange, and the synchronous hot oil pump 5 is started to absorb the heat inside the cement kiln through the heat oil inside the oil pipe A4, and then the heat is circulated through the hot oil pump 5 and the liquid oil inside the oil pipe B15 to introduce the heat into the heat storage barrel 7, and then the heat inside the heat storage barrel 7 is introduced into the heat exchange device 8 through the heat pipe B11 for heat exchange.
[0029] In another embodiment, Figure 1-4As shown, a fan 14 is fixedly installed inside the filter barrel 6, so that when the fan 14 is working, the hot smoke inside the cement kiln can be sucked into the filter barrel 6 for waste heat recovery. Both ends of the oil guide pipe A4 are connected to the hot oil pump 5 to form a circulation, so that the heat inside the oil guide pipe A4 is circulated, so that the waste heat inside the cement kiln is recovered and utilized through the circulating heat transfer oil.
[0030] In another embodiment, Figure 1-4 As shown, the heat exchange device 8, the conical cover 16 and the heat storage barrel 7 are connected through the heat pipe A9 and the heat pipe B11, so that the waste heat recovered from the conical cover 16 and the heat storage barrel 7 is introduced into the heat exchange device 8 through the heat pipe A9 and the heat pipe B11 for heat exchange utilization, and the oil pipe B15 and the top of the hot oil pump 5 are installed inside the heat storage barrel 7, so that the waste heat recovered by the oil pipe A4 through the hot oil pump 5 is stored in the heat storage barrel 7 through the circulation of the heat oil inside the oil pipe B15, and then the waste heat is utilized.
[0031] In another embodiment, Figure 1-4 As shown, three mounting frames 2 are fixedly installed in a circular array at the bottom of the base 1, so that the device can be installed on the top of the cement kiln for waste heat recovery and utilization. A pre-filter 12 and a dust filter 13 are fixedly installed above the fan 14, so that when the fan 14 sucks the hot smoke in the cement kiln into the filter barrel 6, it rises and passes through the pre-filter 12 and the dust filter 13 to filter the hot smoke for use.
[0032] The working principle and use process of the utility model are as follows: the filter barrel 6 is fixedly installed with a fan 14, so that when the fan 14 is working, the hot smoke and dust inside the cement kiln can be sucked into the filter barrel 6 for waste heat recovery and utilization. Both ends of the oil pipe A4 are connected to the hot oil pump 5 to form a cycle, so that the heat conduction inside the oil pipe A4 is circulated, so that the waste heat inside the cement kiln is recovered and utilized through the circulating heat-conducting oil. The heat exchange device 8, the conical cover 16 and the heat storage barrel 7 are connected through the heat conduction pipe A9 and the heat conduction pipe B11, so that the waste heat recovered from the conical cover 16 and the heat storage barrel 7 is introduced into the heat exchange device 8 through the heat conduction pipe A9 and the heat conduction pipe B11. For heat exchange utilization, the top of the oil pipe B15 and the hot oil pump 5 are installed inside the heat storage barrel 7, so that the waste heat recovered by the oil pipe A4 through the hot oil pump 5 is stored in the heat storage barrel 7 through the heat transfer oil circulation inside the oil pipe B15, and then the waste heat is utilized. Three mounting frames 2 are fixedly installed in an annular array at the bottom of the base 1, so that the device can be installed on the top of the cement kiln for waste heat recovery and utilization. A pre-filter 12 and a dust filter 13 are fixedly installed above the fan 14, so that when the fan 14 sucks the hot smoke in the cement kiln into the filter barrel 6, it rises and passes through the pre-filter 12 and the dust filter 13 to filter the hot smoke for use.
[0033] When the device is in use, it is installed on the top of the cement kiln through three mounting frames 2 and a support frame 3, and then the fan 14 is started to suck the hot smoke generated by the cement kiln into the interior of the filter barrel 6, and then filtered through the pre-filter 12 and the dust filter 13 to enter the interior of the conical cover 16, and then the filtered hot gas is introduced into the heat exchange device 8 through the heat pipe A9 for heat exchange, and the synchronous hot oil pump 5 is started to absorb the heat inside the cement kiln through the heat oil inside the oil pipe A4, and then the heat is circulated through the hot oil pump 5 and the liquid oil inside the oil pipe B15 to introduce the heat into the heat storage barrel 7, and then the heat inside the heat storage barrel 7 is introduced into the heat exchange device 8 through the heat pipe B11 for heat exchange.
[0034] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A waste heat recovery device for a carbide slag cement kiln, comprising a base (1), characterized in that: Three mounting frames (2) are fixedly mounted on the bottom of the base (1), a support frame (3) is fixedly mounted on the top of the base (1), a hot oil pump (5) is fixedly mounted inside the base (1), an oil guide pipe A (4) is fixedly mounted on the bottom side of the hot oil pump (5), an oil guide pipe B (15) is fixedly mounted on the top side of the hot oil pump (5), a filter barrel (6) is fixedly mounted on the top of the filter barrel (6), a conical cover (16) is fixedly mounted on the top of the conical cover (16), and a heat conduction pipe A (4) is inserted into the top of the conical cover (16). 9), a heat exchange device (8) is fixedly installed at one end of the heat conduction pipe A (9), a heat conduction pipe B (11) is fixedly installed at the bottom of the end of the heat conduction pipe A (9) close to the heat exchange device (8), a heat exchange conduit (10) is fixedly installed on the side of the heat exchange device (8), a heat storage barrel (7) is fixedly installed at the bottom of the heat exchange device (8), a pre-filter (12) is fixedly installed inside the filter barrel (6), a dust filter (13) is fixedly installed inside the filter barrel (6), and a fan (14) is fixedly installed inside the filter barrel (6).
2. The waste heat recovery device for carbide slag cement kiln according to claim 1, characterized in that: The specifications and dimensions of the fan (14) are compatible with the specifications and dimensions of the inner cavity of the filter barrel (6).
3. The waste heat recovery device for carbide slag cement kiln according to claim 1 is characterized in that: Both ends of the oil guide pipe A (4) are connected to the hot oil pump (5) to form a circulation.
4. The waste heat recovery device for carbide slag cement kiln according to claim 1, characterized in that: The heat exchange device (8), the conical cover (16) and the heat storage barrel (7) are connected via a heat conducting pipe A (9) and a heat conducting pipe B (11).
5. The waste heat recovery device for carbide slag cement kiln according to claim 1 is characterized in that: The oil guide pipe B (15) and the top of the hot oil pump (5) are installed inside the heat storage barrel (7).
6. The waste heat recovery device for carbide slag cement kiln according to claim 1, characterized in that: Three mounting frames (2) are fixedly mounted in a circular array at the bottom of the base (1).
7. The waste heat recovery device for carbide slag cement kiln according to claim 1 is characterized in that: A pre-filter (12) and a dust filter (13) are fixedly mounted above the fan (14).