CN216346223U - Cooling system applied to dust at inlet of waste heat boiler - Google Patents
Cooling system applied to dust at inlet of waste heat boiler Download PDFInfo
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- CN216346223U CN216346223U CN202122944609.2U CN202122944609U CN216346223U CN 216346223 U CN216346223 U CN 216346223U CN 202122944609 U CN202122944609 U CN 202122944609U CN 216346223 U CN216346223 U CN 216346223U
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Abstract
The utility model discloses a cooling system applied to waste heat boiler inlet dust, which comprises a main pipeline, a pressurization pipeline, an adjusting pipeline, a heat exchange pipeline and a return pipeline, wherein the main pipeline is connected with the pressurization pipeline; the main pipeline is sequentially connected with the pressurization pipeline and the adjusting pipeline; each pipeline in the heat exchange pipeline is respectively connected with the regulating pipeline and the return pipeline in parallel, one section of the return pipeline is connected with the heat exchange pipeline, and the other end of the return pipeline flows back into the deaerator; the heat exchange pipeline is connected with the high-temperature dust cooling assembly; in this scheme, cooling liquid carries out the heat transfer to the high temperature dust through in subsiding flue cold ash ware and dust separator, and furthest retrieves the heat in the high temperature dust, has improved overall system's energy utilization.
Description
Technical Field
The utility model relates to the field of resource recovery, in particular to a cooling system applied to dust at an inlet of a waste heat boiler.
Background
Because the inlet of the waste heat boiler of the smelting reduction process has high dust concentration, a settling flue and a cyclone separator are required to be arranged at the front end of the waste heat boiler so as to reduce the dust concentration. Because the concentration temperature of the dust exceeds 800 ℃, the temperature is reduced by an ash cooler before the dust is discharged. The prior art adopts plant circulating cooling water for cooling, but due to high temperature, the water side of the heat exchanger is often scaled, the heat exchange effect is finally deteriorated, and even the phenomenon of tube explosion occurs.
SUMMERY OF THE UTILITY MODEL
The utility model aims to: to above-mentioned problem, provide a cooling system for exhaust-heat boiler entry dust, solved and adopted recirculated cooling water to cool off high temperature dust among the prior art, nevertheless because the temperature is high, the normal scale deposit of heat exchanger water side finally leads to the heat transfer effect to worsen, appears the problem of tube explosion phenomenon even, has solved among the prior art simultaneously and has not carried out effectual utilization to high temperature dust, has caused very big extravagant problem to the heat.
The utility model is realized by the following scheme:
a cooling system applied to dust at an inlet of a waste heat boiler comprises a main pipeline, a pressurizing pipeline, an adjusting pipeline, a heat exchange pipeline and a return pipeline; the main pipeline is sequentially connected with the pressurization pipeline and the adjusting pipeline; each pipeline in the heat exchange pipeline is respectively connected with the regulating pipeline and the return pipeline in parallel, one section of the return pipeline is connected with the heat exchange pipeline, and the other end of the return pipeline returns to the human deaerator; and the heat exchange pipeline is connected with the high-temperature dust cooling assembly.
Based on the cooling system applied to the waste heat boiler inlet dust, the pressurizing pipeline comprises a main pressurizing pipeline and an auxiliary pressurizing pipeline; the main pressurization pipeline and the auxiliary pressurization pipeline are arranged in parallel, are arranged in the same way and respectively comprise a pipeline pressurization pump, a first electric gate valve, a second electric gate valve and a check valve; the first electric gate valve and the second electric gate valve are respectively arranged at the inlet end and the outlet end of the pipeline booster pump, and the check valve is arranged between the second electric gate valve and the pipeline booster pump.
Based on above-mentioned cooling system who is applied to exhaust-heat boiler entry dust, the regulation pipeline includes main adjusting line and vice adjusting line, main adjusting line and the parallelly connected setting of vice adjusting line, main adjusting line includes governing valve and manual gate valve, manual gate valve sets up water inlet and the delivery port end at the governing valve respectively.
Based on above-mentioned cooling system who is applied to exhaust-heat boiler entry dust, vice pipeline of adjusting includes adjustable electric gate valve of type of closing and manual gate valve, manual gate valve sets up respectively at the water inlet and the delivery port end of adjustable electric gate valve of type of closing.
Based on the cooling system applied to the waste heat boiler inlet dust, a flow measuring device is further arranged between the adjusting pipeline and the heat exchange pipeline.
Based on the cooling system applied to the waste heat boiler inlet dust, the heat exchange pipeline comprises a first heat exchange pipeline, a second heat exchange pipeline and a third heat exchange pipeline; the first heat exchange pipeline, the second heat exchange pipeline and the third heat exchange pipeline are respectively connected with the adjusting pipeline and the return pipeline in parallel.
Based on the cooling system applied to the dust at the inlet of the waste heat boiler, the first heat exchange pipeline comprises a first exchange pipe, a sedimentation flue dust cooler and check valves, the check valves are respectively arranged at the two sides of the first exchange pipe, and the first exchange pipe is arranged in the sedimentation flue dust cooler; one end of the first heat exchange wire is connected with the adjusting pipeline, and the other end of the first heat exchange wire is connected with the return pipeline;
based on the cooling system applied to the waste heat boiler inlet dust, the second heat exchange pipeline comprises a second exchange pipe, a first dust separator cold dust device and check valves, the check valves are respectively arranged at the two sides of the second exchange pipe, and the second exchange pipe is arranged in the first dust separator cold dust device; one end of the second heat exchange pipeline is connected with the adjusting pipeline, and the other end of the second heat exchange pipeline is connected with the return pipeline.
Based on the cooling system applied to the inlet dust of the waste heat boiler, the third heat exchange pipeline comprises a third exchange pipe, a second dust separator cold dust device and check valves, the check valves are respectively arranged at two sides of the third exchange pipe, and the third exchange pipe is arranged in the second dust separator cold dust device; one end of the third heat exchange pipeline is connected with the adjusting pipeline, and the other end of the third heat exchange pipeline is connected with the return pipeline.
Based on above-mentioned cooling system who is applied to exhaust-heat boiler entry dust, be provided with electric gate valve and check valve on the back flow circuit.
In summary, due to the adoption of the technical scheme, the utility model has the beneficial effects that:
1. in this scheme, cooling liquid carries out the heat transfer to the high temperature dust through in subsiding flue cold ash ware and dust separator, and furthest retrieves the heat in the high temperature dust, has improved overall system's energy utilization.
2. Through this scheme, not only can avoid the scale deposit of ash cooler heat-transfer surface, make it can long-term continuous stable operation, guarantee heat transfer effect, can reduce the steam turbine steam consumption simultaneously for turbo generator set generates electricity more, improves the generating efficiency.
Drawings
FIG. 1 is a schematic diagram of a prior art steam cycle circuit;
FIG. 2 is a schematic view of the present invention incorporated in its entirety into a vapor cycle loop;
description of the drawings: 1. a main pipeline; 2. a pressurization pipeline; 3. adjusting the pipeline; 4. a heat exchange line; 5. a return line; 6. a flow measuring device; 7. an exhaust device; 8. a condensation pump; 9. a shaft seal heater; 10; a low temperature heating device; 11. a deaerator; 21. a primary booster line; 22. a secondary booster line; 201. a pipeline booster pump; 202. a first electric gate valve; 203. a second electric gate valve; 204. a check valve; 31. a primary conditioning line; 32. a secondary conditioning line; 311. adjusting a valve; 312. a manual gate valve; 313. a normally closed adjustable electric gate valve; 41. a first heat exchange line; 42. a second heat exchange line; 43. a third heat exchange line; 411. a first exchange tube; 412. a settling flue ash cooler; 421. a second exchange tube; 422. a first dust separator cold ash device; 431. a third exchange tube; 432. second dust separator cold ash equipment.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.
Example 1
The steam flow sequence of the existing steam power plant is as shown in fig. 1, after doing work externally, high-temperature gas is condensed in an exhaust device 7, is discharged outwards from a condensed water outlet, is pressurized by a multi-path condensation transmission pump 8, continuously flows to the rear end, passes through a shaft seal heater 9 and 2 low-temperature heating devices 10, is conveyed into a deaerator 11 after being heated, and is finally conveyed to the power plant for steam power generation;
since the prior art needs to preheat the condensed water in the low-temperature heating device 10 by adopting high-temperature increase, the energy consumption of the system is increased; the above are all the prior art;
the inventor combines the above condensed water preheating with energy consumption and high-temperature dust temperature reduction, and obtains the scheme; the scheme is realized in such a way;
as shown in fig. 2, the present embodiment provides a cooling system applied to dust at an inlet of a waste heat boiler, including a main pipeline 1, a pressure boost pipeline 2, a regulating pipeline 3, a heat exchange pipeline 4 and a return pipeline 5; the main pipeline 1 is sequentially connected with a pressurizing pipeline 2 and an adjusting pipeline 3; each pipeline in the heat exchange pipeline 4 is respectively connected with the regulating pipeline 3 and the return pipeline 5 in parallel, one section of the return pipeline 5 is connected with the heat exchange pipeline 4, and the other end of the return pipeline returns to the deaerator 11; the heat exchange pipeline 4 is connected with the high-temperature dust cooling assembly and is used for exchanging heat for high-temperature dust;
the main line 1 inserts between low temperature heating device 10 and the bearing seal heater 9, the condensate water part after the bearing seal heater 9 carries out the heat transfer among the people's main line 1 that flows, condensate water after the heat transfer finally flows back again and goes into oxygen-eliminating device 11, so, not only accomplished the thermal absorption of high-dust, but also can get back to the steam cycle of electricity generation with the heat after retrieving, the supply of low temperature heating device 10 to the condensate water heat has been reduced, the energy has been practiced thrift on the whole, the utilization ratio of abandonment high temperature dust energy has been promoted.
The booster circuit 2 comprises a primary booster line 21 and a secondary booster line 22; the main booster pipeline 21 and the auxiliary booster pipeline 22 are arranged in parallel, the main booster pipeline 21 carries out boosting operation on condensed water, the auxiliary booster pipeline 22 is a spare pipeline, and the waste heat boiler is far away from a steam turbine room, and is specially provided with two pipeline booster pumps 201 which are operated and arranged one by one so as to ensure that cooling water can have enough pressure head to return to the deaerator 11.
The main booster pipeline 21 and the auxiliary booster pipeline 22 are arranged identically and respectively comprise a pipeline booster pump 201, a first electric gate valve 202, a second electric gate valve 203 and a check valve 204; the first electric gate valve 202 and the second electric gate valve 203 are respectively arranged at the inlet end and the outlet end of the pipeline booster pump 201, and the check valve 204 is arranged between the second electric gate valve 203 and the pipeline booster pump 201;
based on above-mentioned structure, check valve 204 can prevent the condensate water backward flow, all be provided with electric gate valve with pipeline booster pump 201 both ends and can the efficient main booster line 21 control with vice booster line 22, simultaneously because the existence of first electric gate valve 202 and second electric gate valve 203, when needs overhaul or maintain pipeline booster pump 201, only need close the electric gate valve at both ends simultaneously, can carry out the operation to pipeline booster pump 201, reduced the degree of difficulty of later maintenance.
The adjusting pipeline 3 comprises a main adjusting pipeline 31 and an auxiliary adjusting pipeline 32, the main adjusting pipeline 31 and the auxiliary adjusting pipeline 32 are arranged in parallel, the main adjusting pipeline 31 adjusts the water inflow of the condensed water, and the adjusting pipeline is a standby pipeline; the adjusting pipelines are also set to be one in operation and one in standby, so that the adjusting pipelines can be timely switched when faults occur, and the smooth proceeding of heat exchange operation is ensured.
The main regulating pipeline 31 comprises a regulating valve 311 and manual gate valves 312, the manual gate valves 312 are respectively arranged at the water inlet and the water outlet ends of the regulating valve 311, the water quantity of the pipeline is regulated through the regulating valve 311, and the manual gate valves 312 at the two ends can facilitate the operation during the overhaul;
the auxiliary regulating pipeline 32 includes a normally closed adjustable electric gate valve 313 and a manual gate valve 312, the manual gate valve 312 is respectively disposed at a water inlet and a water outlet of the normally closed adjustable electric gate valve 313, when the regulating valve 311 needs to be switched, the normally closed adjustable electric gate valve 313 is opened, the normally closed adjustable electric gate valve 313 is closed in a normal state, and the manual gate valves 312 at two ends can facilitate maintenance work.
And a flow measuring device 6 is also arranged between the adjusting pipeline 3 and the heat exchange pipeline 4, and the input total water quantity can be detected through the flow measuring device 6, so that the integral adjustment and feedback are facilitated.
Said heat exchange circuit 4 comprises a first heat exchange line 41, a second heat exchange line 42 and a third heat exchange line 43; the first heat exchange line 41, the second heat exchange line 42 and the third heat exchange line 43 are respectively arranged in parallel with the regulating line 3 and the return line 5;
the first heat exchange pipeline 41 comprises a first exchange pipe 411, a sedimentation flue ash cooler 412 and stop valves, the stop valves are respectively arranged at two sides of the first exchange pipe 411, and the first exchange pipe 411 is arranged in the sedimentation flue ash cooler 412; one end of the first heat exchange wire is connected with the adjusting pipeline 3, and the other end of the first heat exchange wire is connected with the return pipeline 5;
based on the above structure, the heat of the high-temperature dust fixed in the settling flue dust cooler 412 is exchanged to the condensed water in the first exchanging pipe 411 through the first exchanging pipe 411, and the liquid after heat exchange flows into the return line 5.
The second heat exchange pipeline 42 comprises a second exchange pipe 421, a first dust separator cold dust device 422 and stop valves, the stop valves are respectively arranged at two sides of the second exchange pipe 421, and the second exchange pipe 421 is arranged in the first dust separator cold dust device 422; one end of the second heat exchange pipeline 42 is connected with the adjusting pipeline 3, and the other end is connected with the return pipeline 5;
based on the structure, the heat of the high-temperature dust fixed in the first dust separator cold dust device 422 is exchanged into the condensed water in the second exchange pipe 421 through the second exchange pipe 421, and the liquid after heat exchange flows into the return pipeline 5.
The third heat exchange pipeline 43 includes a third exchange pipe 431, a second dust separator cold dust device 432, and stop valves respectively provided at both side positions of the third exchange pipe 431, the third exchange pipe 431 being provided in the second dust separator cold dust device 432; one end of the third heat exchange pipeline 43 is connected with the adjusting pipeline 3, and the other end is connected with the return pipeline 5;
in this scheme, liquid is through in subsiding flue ash cooler 412 and dust separator, carries out the heat transfer to the high temperature dust, and furthest retrieves the heat in the high temperature dust, has improved the energy utilization of whole system.
An electric gate valve and a check valve 204 are arranged on the return pipeline; the pipeline is controlled by an electric gate valve, and the backflow of high-temperature liquid is prevented by a check valve 204;
and finally, the return pipeline 5 is connected with a deaerator 11, and the heated liquid is returned to the steam cycle of the power plant to utilize heat.
Through this scheme, not only can avoid the scale deposit of ash cooler heat-transfer surface, make it can long-term continuous stable operation, guarantee heat transfer effect, can reduce the steam turbine steam consumption simultaneously for turbo generator set generates electricity more, improves the generating efficiency.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a be applied to cooling system of exhaust-heat boiler entry dust which characterized in that: the system comprises a main pipeline, a pressurization pipeline, an adjusting pipeline, a heat exchange pipeline and a return pipeline; the main pipeline is sequentially connected with the pressurization pipeline and the adjusting pipeline; each pipeline in the heat exchange pipeline is respectively connected with the regulating pipeline and the return pipeline in parallel, one section of the return pipeline is connected with the heat exchange pipeline, and the other end of the return pipeline returns to the human deaerator; and the heat exchange pipeline is connected with the high-temperature dust cooling assembly.
2. The cooling system for the inlet dust of the waste heat boiler as set forth in claim 1, wherein: the pressurization pipeline comprises a main pressurization pipeline and an auxiliary pressurization pipeline; the main pressurization pipeline and the auxiliary pressurization pipeline are arranged in parallel, are arranged in the same way and respectively comprise a pipeline pressurization pump, a first electric gate valve, a second electric gate valve and a check valve; the first electric gate valve and the second electric gate valve are respectively arranged at the inlet end and the outlet end of the pipeline booster pump, and the check valve is arranged between the second electric gate valve and the pipeline booster pump.
3. The cooling system for the inlet dust of the waste heat boiler as set forth in claim 2, wherein: the regulating pipeline comprises a main regulating pipeline and an auxiliary regulating pipeline, the main regulating pipeline and the auxiliary regulating pipeline are arranged in parallel, the main regulating pipeline comprises a regulating valve and a manual gate valve, and the manual gate valve is arranged at the water inlet and the water outlet end of the regulating valve respectively.
4. A cooling system for exhaust-heat boiler inlet dust according to claim 3, characterized in that: the auxiliary adjusting pipeline comprises a normally-closed adjustable electric gate valve and a manual gate valve, and the manual gate valve is arranged at the water inlet end and the water outlet end of the normally-closed adjustable electric gate valve respectively.
5. The cooling system for the inlet dust of the waste heat boiler as set forth in claim 4, wherein: and a flow measuring device is also arranged between the adjusting pipeline and the heat exchange pipeline.
6. The cooling system for the inlet dust of the waste heat boiler as set forth in claim 5, wherein: the heat exchange pipeline comprises a first heat exchange pipeline, a second heat exchange pipeline and a third heat exchange pipeline; the first heat exchange pipeline, the second heat exchange pipeline and the third heat exchange pipeline are respectively connected with the adjusting pipeline and the return pipeline in parallel.
7. The cooling system for the inlet dust of the waste heat boiler as set forth in claim 6, wherein: the first heat exchange pipeline comprises a first exchange pipe, a sedimentation flue ash cooler and check valves, wherein the check valves are respectively arranged at two sides of the first exchange pipe, and the first exchange pipe is arranged in the sedimentation flue ash cooler; one end of the first heat exchange wire is connected with the adjusting pipeline, and the other end of the first heat exchange wire is connected with the return pipeline.
8. The cooling system for the inlet dust of the waste heat boiler as set forth in claim 7, wherein: the second heat exchange pipeline comprises a second exchange pipe, a first dust separator cold ash device and check valves, the check valves are respectively arranged at two sides of the second exchange pipe, and the second exchange pipe is arranged in the first dust separator cold ash device; one end of the second heat exchange pipeline is connected with the adjusting pipeline, and the other end of the second heat exchange pipeline is connected with the return pipeline.
9. The cooling system for the inlet dust of the waste heat boiler as set forth in claim 8, wherein: the third heat exchange pipeline comprises a third exchange pipe, a second dust separator cold dust device and check valves, the check valves are respectively arranged at two sides of the third exchange pipe, and the third exchange pipe is arranged in the second dust separator cold dust device; one end of the third heat exchange pipeline is connected with the adjusting pipeline, and the other end of the third heat exchange pipeline is connected with the return pipeline.
10. The cooling system for the inlet dust of the waste heat boiler as set forth in claim 9, wherein: and the return pipeline is provided with an electric gate valve and a check valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122944609.2U CN216346223U (en) | 2021-11-26 | 2021-11-26 | Cooling system applied to dust at inlet of waste heat boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122944609.2U CN216346223U (en) | 2021-11-26 | 2021-11-26 | Cooling system applied to dust at inlet of waste heat boiler |
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| Publication Number | Publication Date |
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| CN216346223U true CN216346223U (en) | 2022-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122944609.2U Active CN216346223U (en) | 2021-11-26 | 2021-11-26 | Cooling system applied to dust at inlet of waste heat boiler |
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| CN (1) | CN216346223U (en) |
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2021
- 2021-11-26 CN CN202122944609.2U patent/CN216346223U/en active Active
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