CN215447463U - Dust waste heat recovery device and dust collection system - Google Patents
Dust waste heat recovery device and dust collection system Download PDFInfo
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- CN215447463U CN215447463U CN202121417720.XU CN202121417720U CN215447463U CN 215447463 U CN215447463 U CN 215447463U CN 202121417720 U CN202121417720 U CN 202121417720U CN 215447463 U CN215447463 U CN 215447463U
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Abstract
The application provides a dust waste heat recovery device and dust collection system, dust waste heat recovery device includes: the top end of the heat exchanger is provided with a high-temperature dust input hopper, and the bottom end of the heat exchanger is provided with a cooling dust output hopper; a plurality of heat exchange pieces which are horizontally and uniformly distributed are arranged in the heat exchanger, and the plurality of heat exchange pieces are connected through connecting pipes; one end of the heat exchange piece, which is close to the cooling dust output hopper, of the plurality of heat exchange pieces is connected with a water inlet pipe, and a water pump is fixedly arranged on the water inlet pipe; one end of the heat exchange piece, which is close to the high-temperature dust input hopper, in the plurality of heat exchange pieces is connected with a water outlet pipe. The application has solved the direct transport of current dust and has not only caused the heat waste to the ash storage storehouse, damages conveying line and ash storage storehouse moreover easily, increases the problem of maintenance cost.
Description
Technical Field
The application relates to the technical field of dust treatment, in particular to a dust waste heat recovery device and a dust collecting system.
Background
At present, along with the stricter environmental protection requirement, the tail gas emission treatment work of the glass kiln is increasingly concerned by society. Because of the technological characteristics of glass kilns, the tail gas has high smoke dust and NOx content, the mainstream treatment measure at present is to adopt a high-temperature electric dust removal and selective catalytic reduction denitration (SCR) mode, the adaptation temperature of the SCR denitration catalyst is generally 315-400 ℃, but K, Ca, Na, Si, As and other components in the flue gas can cause the poisoning of the catalyst, and the dust can cause the blockage of catalyst gaps, so a high-temperature electric dust remover is required to be added before SCR to remove a certain amount of dust and harmful ions, and the service life of the catalyst is prolonged. More than 80% of dust discharged by the kiln can be collected and removed during the operation of the high-temperature electric dust remover.
In the traditional process, the dust with the temperature of more than 300 ℃ collected by the electric dust collector is directly conveyed to the ash storage bin through air, so that a large amount of heat is wasted, higher requirements are put on a conveying pipeline and the ash storage bin, the metal strength of the conveying pipeline is reduced in a high-temperature environment, and the pipeline is easy to damage; in a high-temperature environment, the ash storage bin needs to be subjected to high-temperature-resistant treatment, certain investment is increased, and the later maintenance cost is also greatly increased.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a dust waste heat recovery device and dust collection system, has solved current dust and has directly carried not only to cause the heat waste to the ash storage storehouse, damages conveying line and ash storage storehouse moreover easily, increases the problem of maintenance cost.
The utility model is realized in this way, a dust waste heat recovery device, comprising:
the top end of the heat exchanger is provided with a high-temperature dust input hopper, and the bottom end of the heat exchanger is provided with a cooling dust output hopper;
a plurality of heat exchange pieces which are horizontally and uniformly distributed are arranged in the heat exchanger, and the heat exchange pieces are connected through connecting pipes;
one end of the heat exchange piece, close to the cooling dust output hopper, of the plurality of heat exchange pieces is connected with a water inlet pipe, and a water pump is fixedly arranged on the water inlet pipe;
one end of the heat exchange piece, which is close to the high-temperature dust input hopper, in the plurality of heat exchange pieces is connected with a water outlet pipe.
According to the dust waste heat recovery device that this application embodiment provided, high temperature dust is followed in the high temperature dust input fill input heat exchanger, let in cold water in the heat transfer spare that sets up to the heat exchanger from the inlet tube, cold water absorbs and becomes hot water after the heat and can follow the outlet pipe outflow, thereby absorb the heat in the high temperature dust, make the dust temperature who fights the output from cooling dust reduces, so not only can absorb the heat in the high temperature dust, realize effective recovery and the utilization of waste heat, for the energy saving of enterprise, and microthermal dust can not cause the damage to pipeline and storage ash storehouse in transportation process, the maintenance cost of pipeline and storage ash storehouse has also further been saved, fundamentally has solved the harm of high temperature dust to equipment and personnel.
In one embodiment, a regulating valve is fixedly arranged on the water inlet pipe and is positioned between the water pump and the heat exchanger;
the cooling dust output hopper is connected with a dust discharge valve, and the inner surface of the cooling dust output hopper is provided with a temperature sensor;
and the signal output end of the temperature sensor is electrically connected with an external digital display thermometer.
In one embodiment, the heat exchange member is a serpentine tube.
In one embodiment, the high-temperature dust input hopper is in a circular truncated cone shape, and the area of an inlet of the high-temperature dust input hopper is smaller than that of the top of the heat exchanger.
In one embodiment, the cooling dust output hopper is in a round table shape, the outlet area of the cooling dust output hopper is smaller than the area of the bottom of the heat exchanger, and the side surface inclination angle of the cooling dust output hopper is larger than 62 degrees.
In one embodiment, the dust waste heat recovery device further comprises a blower, wherein the blower comprises a purge gas pipe fixedly arranged on the inner surface of the high-temperature dust input hopper and a compressed air piece connected with the air inlet of the purge gas pipe;
the blowing air pipe comprises a main air pipe and a gas distribution pipe communicated with the main air pipe, the gas distribution pipe is positioned above the heat exchange piece, and gaps formed by the heat exchange piece are opposite to gas outlets of the gas distribution pipe.
In one embodiment, the dust waste heat recovery device further comprises a powder collecting hopper, and the powder collecting hopper is communicated with the high-temperature dust input hopper through a dust conveying pipe.
In one embodiment, a metal expansion joint and a pneumatic gate valve are arranged on the dust conveying pipe, and the metal expansion joint is located between the dust collecting hopper and the pneumatic gate valve.
In one embodiment, the number of the powder collecting hoppers is two, the output ports of the two powder collecting hoppers are connected with the reverse spiral auger, and the output port of the reverse spiral auger is communicated with the dust conveying pipe.
An embodiment of the present application further provides a dust collection system, including:
the dust waste heat recovery device according to any one of the above embodiments;
the powder inlet of the pneumatic powder conveying device is connected with the outlet of the cooling dust output hopper;
and the powder conveying port of the pneumatic powder conveying device is connected with the powder storage port of the powder storage bin through a powder conveying pipe.
According to the technical scheme, the embodiment of the utility model has the following beneficial effects: the high-temperature dust is input into the heat exchanger, cold water is introduced into the heat exchange piece in the heat exchanger, so that heat in the high-temperature dust can be absorbed, the purpose of cooling the high-temperature dust is achieved, the temperature of the dust output from the heat exchanger is reduced, heat absorption in the high-temperature dust is achieved, waste heat of the high-temperature dust is effectively recovered and utilized, energy is saved, the dust subjected to cooling cannot damage a conveying pipeline and a powder storage bin in the conveying process, the service life of the conveying pipeline and the powder storage bin is prolonged, and the maintenance cost of the conveying pipeline and the powder storage bin is saved.
Drawings
Fig. 1 is a schematic structural diagram of a heat exchanger provided in an embodiment of the present application.
Fig. 2 is a side sectional view in the direction of a-a in fig. 1.
Fig. 3 is a schematic structural diagram of a dust waste heat recovery device provided in an embodiment of the present application.
Fig. 4 is a schematic structural diagram of a dust collection system according to an embodiment of the present application.
Reference numerals: 10. a heat exchanger; 11. high-temperature dust input hopper; 12. a cooling dust output hopper; 13. a heat exchange member;
20. a water inlet pipe; 21. a water pump; 22. adjusting a valve;
30. a water outlet pipe;
40. an ash discharge valve; 41. a temperature sensor; 42. a digital display thermometer;
50. a blower; 51. a purge gas pipe; 511. a main gas pipe; 512. a gas distributing pipe;
60. a powder collecting hopper; 61. a dust conveying pipe; 62. a metal expansion joint; 63. a pneumatic gate valve;
70. a reverse spiral auger;
200. a pneumatic powder conveying device;
300. a powder storage bin;
400. a powder conveying pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
The embodiment of the application provides a dust waste heat recovery device and dust collection system, has solved current dust and has directly carried not only to cause the heat waste to the ash storage storehouse, damages conveying line and ash storage storehouse moreover easily, increases the problem of maintenance cost.
Fig. 1 shows a schematic structural diagram of a dust waste heat recovery device according to a preferred embodiment of the present invention, and for convenience of description, only the parts related to this embodiment are shown, and the details are as follows:
referring to fig. 1, the dust waste heat recovery device provided by the embodiment of the present application includes a heat exchanger 10, a high-temperature dust input hopper 11 is arranged at the top end of the heat exchanger 10, and a cooling dust output hopper 12 is arranged at the bottom end of the heat exchanger 10; a plurality of heat exchange pieces 13 which are horizontally and uniformly distributed are arranged in the heat exchanger 10, and the plurality of heat exchange pieces 13 are connected through connecting pipes; one end of the heat exchange piece 13, which is close to the cooling dust output hopper 12, in the plurality of heat exchange pieces 13 is connected with a water inlet pipe 20, and a water pump 21 is fixedly arranged on the water inlet pipe 20; one end of the heat exchange piece 13 close to the high-temperature dust input hopper 11 in the plurality of heat exchange pieces 13 is connected with a water outlet pipe 30.
According to the dust waste heat recovery device that the embodiment of this application provided, high temperature dust is followed high temperature dust input and is fought 11 in the input heat exchanger 10, let in cold water in the heat transfer member 13 that sets up to the heat exchanger 10 from inlet tube 20, cold water can become hot water after absorbing the heat and flow out from outlet pipe 30, thereby absorb the heat in the high temperature dust, make the dust temperature who fights 12 outputs from cooling dust reduce, so not only can absorb the heat in the high temperature dust, realize effective recovery and the utilization of waste heat, for the energy saving of enterprise, and microthermal dust can not cause the damage to pipeline and ash storage storehouse in transportation process, the maintenance cost of pipeline and ash storage storehouse has also further been saved, fundamentally has solved the harm of high temperature dust to equipment and personnel.
Specifically, in order to ensure normal operation of the heat exchanger 10 and also take effective recovery of heat energy into consideration, the heat exchanger 10 designed in this embodiment adopts an arrangement manner of in-line and counter-flow, i.e., water is fed from the lower part and discharged from the upper part.
For example, the dust content in the flue gas is 5g/m3After the dust is removed by the dust remover, the dust content can be reduced to 100mg/m3, about 1386kg/h of dust can be collected, about 176.8MJ/h of heat can be recovered by the dust waste heat recovery device of the embodiment, 10t/h of condensed water can be increased to 55 ℃ from 50 ℃, which is equivalent to about 48.3t of annual standard coal; the waste heat is effectively recycled and utilized, and energy is saved for enterprises.
In one embodiment, the water inlet pipe 20 is fixedly provided with a regulating valve 22, and the regulating valve 22 is positioned between the water pump 21 and the heat exchanger 10; the cooling dust output hopper 12 is connected with an ash discharge valve 40, and the inner surface of the cooling dust output hopper 12 is provided with a temperature sensor 41; the signal output end of the temperature sensor 41 is electrically connected with an external digital thermometer 42.
Specifically, the high-temperature dust in this embodiment may be high-temperature dolomite dust, and since the high-temperature dolomite dust has the characteristics of fine particles and good fluidity, the combination of the electric dust discharge valve 40 and the regulating valve 22 of the heat exchanger 10 is selected, so that the reduction range of the temperature of the dolomite dust can be stably and efficiently controlled, and since the temperature of the dolomite dust is too high, heat cannot be effectively recovered; if the temperature is too low, the powder flowability is greatly reduced to cause the blockage of a conveying pipeline, so that the temperature of the dust output by the heat exchanger 10 can be detected through the temperature sensor 41, and when the temperature of the dust is detected to be too low, the ash discharging speed and the flow rate of condensate water can be adjusted through the ash discharging valve 40 and the regulating valve 22 to ensure that the temperature of the cooled dolomite dust is about 100 ℃.
The ash discharge valve 40 and the regulating valve 22 can be automatically regulated according to the temperature detected by the temperature sensor 41, and can also be manually regulated, and the signal output end of the temperature sensor 41 is electrically connected with the external digital display thermometer 42, so that a worker can conveniently check the temperature of the cooled dust from the external digital display thermometer 42, and the ash discharge valve 40 and the regulating valve 22 can be manually regulated in time.
In one embodiment, the heat exchange member 13 is a coil pipe. The heat exchange piece 13 adopts a coiled pipe, so that a long pipeline can be arranged to introduce cold water to absorb heat in high-temperature dust, and a gap formed by the coiled pipe can allow the high-temperature dust to pass through, so that the contact area between the coiled pipe and the high-temperature dust is increased, and the cooling rate of the high-temperature dust is further increased.
In one embodiment, referring to fig. 1, the high temperature dust input hopper 11 has a circular truncated cone shape, and the inlet area of the high temperature dust input hopper 11 is smaller than the area of the top of the heat exchanger 10. Through the above arrangement, the area of the inlet of the high-temperature dust input hopper 11 is smaller than that of the top of the heat exchanger 10, so that the high-temperature dust can not be adhered to the inner side surface of the high-temperature dust input hopper 11 when entering the heat exchanger 10 from the inlet of the high-temperature dust input hopper 11, and the high-temperature dust can be input into the heat exchanger 10 more smoothly.
In one embodiment, referring to fig. 1, the cooling dust output hopper 12 is in a truncated cone shape, the outlet area of the cooling dust output hopper 12 is smaller than the area of the bottom of the heat exchanger 10, and the side surface inclination angle of the cooling dust output hopper 12 is greater than 62 degrees. Through the arrangement, the wall hanging of the dust output from the cooling dust output hopper 12 can be effectively reduced.
In one embodiment, referring to fig. 2, the dust waste heat recovery device further comprises a blower 50, wherein the blower 50 comprises a purge gas pipe 51 fixedly arranged on the inner surface of the high-temperature dust input hopper 11 and a compressed air piece connected with an air inlet of the purge gas pipe 51; the purge gas pipe 51 comprises a main gas pipe 511 and a gas distribution pipe 512 communicated with the main gas pipe 511, the gas distribution pipe 512 is positioned above the heat exchange member 13, and gaps formed by the heat exchange member 13 are opposite to gas outlets of the gas distribution pipe 512.
In the above arrangement, the compressed air is compressed by the compressed air piece and sent into the purge air pipe 51, and the compressed air can be output from the air distribution pipe 512, because the air distribution pipe 512 is located above the heat exchange piece 13 and the gaps formed by the heat exchange piece 13 are just opposite to the air outlet of the air distribution pipe 512, the compressed air blown out from the air distribution pipe 512 can purge the dust attached to the surface of the heat exchange piece 13, so as to ensure the surface of the heat exchange piece 13 to be clean, and meanwhile, the dust can be prevented from blocking the gaps formed by the heat exchange piece 13 in the heat exchanger 10 and the gaps between two adjacent heat exchange pieces 13, and the smoothness of the dust passing through the heat exchanger 10 is affected.
For example, one or two or more purgers 50 may be provided, and may be specifically determined according to the size of the heat exchanger 10, and because the purging range of the purger 50 is limited, when the size of the heat exchanger 10 is large, that is, the number of the gaps formed by the heat exchanging element 13 is large, two or more purgers 50 may be provided to fully cover all the gaps formed by the heat exchanging element 13, so as to achieve a good dust purging effect. When two or more purgers 50 are provided, the compressed air components of the plurality of purgers 50 may be connected in parallel to perform unified control, and of course, the control on the compressed air components may be manual control, or may be set with parameters to perform regular automatic control, and the specific control mode may be selected according to actual requirements.
In one embodiment, referring to fig. 3, the dust residual heat recovery device further includes a dust collecting hopper 60, and the dust collecting hopper 60 is communicated with the high-temperature dust input hopper 11 through a dust conveying pipe 61. The powder collecting hopper 60 is used for collecting high-temperature dust, and particularly, the dust can be collected to the powder collecting hopper 60 through a high-temperature electric dust remover.
In one embodiment, referring to fig. 3, the dust conveying pipe 61 is provided with a metal expansion joint 62 and a pneumatic gate valve 63, and the metal expansion joint 62 is located between the dust collecting hopper 60 and the pneumatic gate valve 63. Since the dust in the dust collecting hopper 60 is high-temperature dust, the dust conveying pipe 61 is easily deformed by directly passing the dust through the dust conveying pipe 61, and the arrangement of the metal expansion joint 62 can compensate the axial deformation of the dust conveying pipe 61; set up the purpose that whether the dust of collecting in reaching control collection powder hopper 60 carried to heat exchanger 10 through the flashboard of controlling among the pneumatic flashboard valve 63 is opened and close, the application that just can be more nimble of the dust waste heat recovery device of this embodiment like this, dust waste heat recovery device can break away from collection powder hopper 60 and use, for example, can control the flashboard of pneumatic flashboard valve 63 and close, dismantle dust waste heat recovery device and dust conveyer pipe 61 and open, then remove dust waste heat recovery device to other places and use, not only can strengthen dust waste heat recovery device's utilization ratio, and same dust waste heat recovery device can be used in multiple different places, further reduced dust waste heat recovery device's purchase cost.
In one embodiment, referring to fig. 3, the powder collecting hoppers 60 are provided with two powder collecting hoppers 60, the output ports of the two powder collecting hoppers 60 are connected with the reverse spiral auger 70, and the output port of the reverse spiral auger 70 is communicated with the dust conveying pipe 61. When the dust is more, two powder collecting hoppers 60 can be arranged, in order to enable the dust in the two powder collecting hoppers 60 to share one dust waste heat recovery device, the reverse spiral auger 70 can be arranged to collect the dust in the two powder collecting hoppers 60 together and input the dust into the dust conveying pipe 61, so that the dust in the two powder collecting hoppers 60 is not required to be collected together manually, and the workload is saved.
Referring to fig. 4, an embodiment of the present application further provides a dust collection system, including a dust waste heat recovery device as in any of the above embodiments; the powder inlet of the pneumatic powder conveying device 200 is connected with the outlet of the cooling dust output hopper 12; the powder storage bin 300, the powder conveying port of the pneumatic powder conveying device 200 and the powder storage port of the powder storage bin 300 are connected through a powder conveying pipe 400.
According to the dust collection system provided by the embodiment, when the dust is dolomite powder, the temperature of the dolomite powder collected by the high-temperature electric dust remover at about 300 ℃ is reduced to about 100 ℃ after being cooled by the heat exchanger 10, and then the dolomite powder is sent to the powder storage bin 300 for storage through the pneumatic powder conveying device 200. The dolomite dust in the dust storage bin 300 can be directly conveyed to a raw material storage bin to be used as a raw material for blending, and heat dissipation and cooling treatment are not needed. The temperature protection requirement of the dolomite dust after the temperature reduction in the conveying process of the pneumatic powder conveying device 200 and the dolomite dust storage of the powder storage bin 300 is reduced, and the investment cost and the daily maintenance cost are reduced.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a dust waste heat recovery device which characterized in that includes:
the device comprises a heat exchanger (10), wherein a high-temperature dust input hopper (11) is arranged at the top end of the heat exchanger (10), and a cooling dust output hopper (12) is arranged at the bottom end of the heat exchanger (10);
a plurality of heat exchange pieces (13) which are horizontally and uniformly distributed are arranged in the heat exchanger (10), and the heat exchange pieces (13) are connected through connecting pipes;
one end of the heat exchange piece (13) close to the cooling dust output hopper (12) in the plurality of heat exchange pieces (13) is connected with a water inlet pipe (20), and a water pump (21) is fixedly arranged on the water inlet pipe (20);
one end of the heat exchange piece (13) close to the high-temperature dust input hopper (11) in the plurality of heat exchange pieces (13) is connected with a water outlet pipe (30).
2. The dust waste heat recovery device according to claim 1, wherein a regulating valve (22) is fixedly arranged on the water inlet pipe (20), and the regulating valve (22) is positioned between the water pump (21) and the heat exchanger (10);
the cooling dust output hopper (12) is connected with a dust discharge valve (40), and a temperature sensor (41) is arranged on the inner surface of the cooling dust output hopper (12);
and the signal output end of the temperature sensor (41) is electrically connected with an external digital display thermometer (42).
3. The dust waste heat recovery device of claim 1, wherein the heat exchange member (13) is a serpentine tube.
4. The dust waste heat recovery device according to claim 1, wherein the high temperature dust input hopper (11) is in a shape of a circular truncated cone, and the inlet area of the high temperature dust input hopper (11) is smaller than the area of the top of the heat exchanger (10).
5. The dust waste heat recovery device according to claim 1, wherein the cooling dust output hopper (12) is in a shape of a circular truncated cone, the outlet area of the cooling dust output hopper (12) is smaller than the area of the bottom of the heat exchanger (10), and the side surface inclination angle of the cooling dust output hopper (12) is larger than 62 degrees.
6. The dust waste heat recovery device according to claim 3, further comprising a blower (50), wherein the blower (50) comprises a blowing air pipe (51) fixedly arranged on the inner surface of the high-temperature dust input hopper (11) and a compressed air piece connected with an air inlet of the blowing air pipe (51);
the blowing and sweeping air pipe (51) comprises a main air pipe (511) and a gas distribution pipe (512) communicated with the main air pipe (511), the gas distribution pipe (512) is located above the heat exchange piece (13), and gaps formed by the heat exchange piece (13) are opposite to an air outlet of the gas distribution pipe (512).
7. The dust waste heat recovery device according to claim 6, further comprising a powder collecting hopper (60), wherein the powder collecting hopper (60) is communicated with the high-temperature dust input hopper (11) through a dust conveying pipe (61).
8. The dust waste heat recovery device according to claim 7, wherein a metal expansion joint (62) and a pneumatic gate valve (63) are arranged on the dust conveying pipe (61), and the metal expansion joint (62) is located between the dust collecting hopper (60) and the pneumatic gate valve (63).
9. The dust waste heat recovery device according to claim 7 or 8, wherein the number of the powder collecting hoppers (60) is two, the output ports of the two powder collecting hoppers (60) are connected with the reverse spiral auger (70), and the output port of the reverse spiral auger (70) is communicated with the dust conveying pipe (61).
10. A dust collection system, comprising:
the dust waste heat recovery device of any one of claims 1 to 9;
the powder inlet of the pneumatic powder conveying device (200) is connected with the outlet of the cooling dust output hopper (12);
the powder storage bin (300), the powder conveying port of the pneumatic powder conveying device (200) is connected with the powder storage port of the powder storage bin (300) through a powder conveying pipe (400).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121417720.XU CN215447463U (en) | 2021-06-24 | 2021-06-24 | Dust waste heat recovery device and dust collection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121417720.XU CN215447463U (en) | 2021-06-24 | 2021-06-24 | Dust waste heat recovery device and dust collection system |
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| CN215447463U true CN215447463U (en) | 2022-01-07 |
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| CN202121417720.XU Active CN215447463U (en) | 2021-06-24 | 2021-06-24 | Dust waste heat recovery device and dust collection system |
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2021
- 2021-06-24 CN CN202121417720.XU patent/CN215447463U/en active Active
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