CN212132398U - Waste heat recovery and demisting system for exhaust steam and continuous-exhaust sewage of garbage power station - Google Patents
Waste heat recovery and demisting system for exhaust steam and continuous-exhaust sewage of garbage power station Download PDFInfo
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- CN212132398U CN212132398U CN202020445245.6U CN202020445245U CN212132398U CN 212132398 U CN212132398 U CN 212132398U CN 202020445245 U CN202020445245 U CN 202020445245U CN 212132398 U CN212132398 U CN 212132398U
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Abstract
The utility model provides a garbage power station exhaust steam and continuous sewage waste heat recovery defogging system not only can beautify garbage power plant's production environment, can also reduce soda and thermal loss. The water inlet pipeline is connected with an inlet of the first-stage heat exchanger, the first-stage heat exchanger is connected with the second-stage heat exchanger, the second-stage heat exchanger is connected with the third-stage heat exchanger, and the third-stage heat exchanger is connected with the deaerator; the drain flash tank and the drain tank are both connected with the first-stage heat exchanger; the drain tank is also connected with the first-stage heat exchanger and the third-stage heat exchanger; the continuous blowdown flash tank is connected with the second-stage heat exchanger, and the periodic blowdown flash tank is connected with the second-stage heat exchanger; the deaerator is connected with the third-stage heat exchanger; a first temperature measuring device is arranged on the first-stage heat exchanger, a second temperature measuring device is arranged on the second-stage heat exchanger, and a third temperature measuring device is arranged on the third-stage heat exchanger; and an exhaust steam demister is arranged on an exhaust steam pipeline of the periodic blowdown flash tank.
Description
Technical Field
The utility model relates to a garbage power station exhaust steam and even arrange sewage waste heat recovery defogging system.
Background
Waste incineration power generation gradually becomes a main approach for municipal domestic waste treatment in China, and the problem of environmental protection is one of the most important social concerns in the construction and operation of waste power generation. The phenomenon of 'white smoke' is often formed when exhaust in a traditional garbage power station is directly communicated with the atmosphere, the phenomenon is easy to cause the environment protection problem of the garbage power station to be distorted by the society, and the loss of water and heat in a thermodynamic system of the power station can be increased.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide a refuse power station steam exhaust and even arrange sewage waste heat recovery defogging system that structural design is reasonable, not only can beautify refuse power plant's production environment, can also reduce soda and thermal loss.
The utility model provides a technical scheme that above-mentioned problem adopted is: the utility model provides a refuse power station exhaust steam and continuous blowdown waste heat recovery defogging system, includes continuous blowdown flash tank, periodic blowdown flash tank, hydrophobic flash tank, drain tank and oxygen-eliminating device, its characterized in that: the system also comprises a first-stage heat exchanger, a second-stage heat exchanger, a third-stage heat exchanger, a first temperature measuring device, a second temperature measuring device, a third temperature measuring device, a water inlet pipeline and an adjusting valve group; the water inlet pipeline is connected with a cold phase inlet of the first-stage heat exchanger, a cold phase outlet of the first-stage heat exchanger is connected with a cold phase inlet of the second-stage heat exchanger, a cold phase outlet of the second-stage heat exchanger is connected with a cold phase inlet of the third-stage heat exchanger, and a cold phase outlet of the third-stage heat exchanger is connected with the deaerator; the water inlet pipeline is provided with an adjusting valve group; the drain flash tank and the drain tank are both connected with a hot phase inlet of the first-stage heat exchanger; the drain tank is also connected with a hot phase outlet of the first-stage heat exchanger and a hot phase outlet of the third-stage heat exchanger; the continuous blowdown flash tank is connected with a hot phase inlet of the second-stage heat exchanger, and the periodic blowdown flash tank is connected with a hot phase outlet of the second-stage heat exchanger; the steam outlet of the deaerator is connected with the hot phase inlet of the third-stage heat exchanger; a first temperature measuring device is arranged on a cold phase outlet of the first-stage heat exchanger, a second temperature measuring device is arranged on a cold phase outlet of the second-stage heat exchanger, and a third temperature measuring device is arranged on a cold phase outlet of the third-stage heat exchanger; and an exhaust steam demister is arranged on an exhaust steam pipeline of the periodic blowdown flash tank.
First order heat exchanger, second grade heat exchanger, third level heat exchanger all adopt surface type heat exchanger.
The first and third heat exchangers are provided with a through-hole.
The regulating valve group include control system and governing valve, control system and governing valve are connected, control system still is connected with No. three temperature measuring device.
A waste heat recovery demisting method for exhaust steam and continuous exhaust sewage of a garbage power station is characterized by comprising the following steps: the waste power station steam exhaust and continuous sewage waste heat recovery demisting system comprises the following steps: the cooling medium is supplementary desalted water or condensed water, enters through a water inlet pipeline, sequentially passes through the first-stage heat exchanger, the second-stage heat exchanger and the third-stage heat exchanger and finally enters the deaerator; the exhausted steam of the drain flash tank and the drain tank is respectively connected into the first-stage heat exchanger, and the exhausted steam condensate water is recycled to the drain tank; the sewage discharged by the continuous sewage discharge flash tank enters the second-stage heat exchanger, is cooled and then is discharged to the periodic sewage discharge flash tank; and the exhaust steam of the deaerator enters a third-stage heat exchanger, condensed water is recovered to a drain tank after the exhaust steam is cooled, and non-condensed gas is discharged into the atmosphere.
Compared with the prior art, the utility model, have following advantage and effect: the utility model recovers water and heat in the exhaust steam of the drain flash tank, the drain tank and the deaerator so as to eliminate the phenomenon of white smoke emission of the exhaust steam pipeline of the garbage power station; the waste heat of the sewage discharged by the continuous sewage discharge flash tank is recovered through the heat exchanger, so that the continuous sewage is prevented from being subjected to flash evaporation in a fixed row to form white fog; meanwhile, white mist formed by constant-exhaust steam is controlled by the steam-exhaust demister; this patent not only can beautify the production environment of rubbish power plant, can also reduce soda and thermal loss.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
Referring to fig. 1, the embodiment of the utility model provides an including hydrophobic flash tank 1, hydrophobic case 2, continuous blowdown flash tank 3, oxygen-eliminating device 4, first order heat exchanger 5, second grade heat exchanger 6, tertiary heat exchanger 7, periodic blowdown flash tank 8, steam extraction defroster 9, governing valve group 10, a temperature measuring device 11, No. two temperature measuring device 12, No. three temperature measuring device 13 and inlet channel.
The first-stage heat exchanger 5, the second-stage heat exchanger 6 and the third-stage heat exchanger 7 all adopt surface heat exchangers, cooling water is on a tube pass, and steam is on a shell side. The water inlet pipeline is connected with a cold phase inlet of the first-stage heat exchanger 5, a cold phase outlet of the first-stage heat exchanger 5 is connected with a cold phase inlet of the second-stage heat exchanger 6, a cold phase outlet of the second-stage heat exchanger 6 is connected with a cold phase inlet of the third-stage heat exchanger 7, and a cold phase outlet of the third-stage heat exchanger 7 is connected with the deaerator 4. The water inlet pipeline is provided with an adjusting valve group 10.
The drain flash tank 1 and the drain tank 2 are both connected with a heat phase inlet of the first-stage heat exchanger 5; the drain tank is also connected with the hot phase outlet of the first-stage heat exchanger 5 and the hot phase outlet of the third-stage heat exchanger 7.
In order to ensure the exhaust back pressure of the drain flash tank 1 and the drain tank 2, the first-stage heat exchanger 5 and the third-stage heat exchanger 7 are provided with air inlets.
The continuous blowdown flash tank 3 is connected with a hot phase inlet of the second-stage heat exchanger 6, and the periodic blowdown flash tank 8 is connected with a hot phase outlet of the second-stage heat exchanger 6.
The steam exhaust pipeline of the periodic blowdown flash tank 8 is provided with a steam exhaust demister 9, the white fog formed by the periodic exhaust steam is controlled by the steam exhaust demister 9, and the cooling medium of the steam exhaust demister 9 is industrial water or circulating water.
And the steam outlet of the deaerator 4 is connected with the hot phase inlet of the third-stage heat exchanger 7.
A first temperature measuring device 11 is installed on a cold phase outlet of the first-stage heat exchanger 5, a second temperature measuring device 12 is installed on a cold phase outlet of the second-stage heat exchanger 6, and a third temperature measuring device 13 is installed on a cold phase outlet of the third-stage heat exchanger 7.
The regulating valve group 10 comprises a control system and a regulating valve, and the control system is connected with the regulating valve. Control system still is connected with No. three temperature measurement device 13, and No. three temperature measurement device 13 feeds back control system with the temperature information of intaking of oxygen-eliminating device 4, and control system controls the aperture of governing valve, and No. three temperature measurement device 13 is chain like this with regulating valve group 10 to ensure that the temperature control of intaking of oxygen-eliminating device 4 is in 90 +/-5 ℃ of scope (or with low and export condensate temperature is close).
A waste heat recovery demisting method for steam exhaust and continuous sewage discharge of a garbage power station is carried out by adopting the waste heat recovery demisting system for steam exhaust and continuous sewage discharge of the garbage power station, and comprises the following steps:
the cooling medium is supplementary demineralized water or condensed water, the cooling medium enters through a water inlet pipeline, and the regulating valve group 10 is used for regulating water quantity; the cooling water passes through the first-stage heat exchanger 5, the second-stage heat exchanger 6 and the third-stage heat exchanger 7 in sequence and finally enters the deaerator 4.
The exhaust steam of the drain flash tank 1 and the drain tank 2 is respectively connected to the first-stage heat exchanger 5, and the exhaust steam condensate is recycled to the drain tank 2. The sewage discharged from the continuous sewage discharging flash tank 3 enters the second-stage heat exchanger 6, is cooled and then is discharged to the periodic sewage discharging flash tank 8; and the steam discharged by the deaerator 4 enters a third-stage heat exchanger, condensed water is recovered to a drain tank after the discharged steam is cooled, and non-condensed gas is discharged into the atmosphere.
In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an example of the structure of the present invention. All the equivalent changes or simple changes made according to the structure, characteristics and principle of the utility model are included in the protection scope of the utility model. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (4)
1. The utility model provides a refuse power station exhaust steam and continuous blowdown waste heat recovery defogging system, includes continuous blowdown flash tank, periodic blowdown flash tank, hydrophobic flash tank, drain tank and oxygen-eliminating device, its characterized in that: the system also comprises a first-stage heat exchanger, a second-stage heat exchanger, a third-stage heat exchanger, a first temperature measuring device, a second temperature measuring device, a third temperature measuring device, a water inlet pipeline, a regulating valve group and an exhaust demister; the water inlet pipeline is connected with a cold phase inlet of the first-stage heat exchanger, a cold phase outlet of the first-stage heat exchanger is connected with a cold phase inlet of the second-stage heat exchanger, a cold phase outlet of the second-stage heat exchanger is connected with a cold phase inlet of the third-stage heat exchanger, and a cold phase outlet of the third-stage heat exchanger is connected with the deaerator; the water inlet pipeline is provided with an adjusting valve group; the drain flash tank and the drain tank are both connected with a hot phase inlet of the first-stage heat exchanger; the drain tank is also connected with a hot phase outlet of the first-stage heat exchanger and a hot phase outlet of the third-stage heat exchanger; the continuous blowdown flash tank is connected with a hot phase inlet of the second-stage heat exchanger, and the periodic blowdown flash tank is connected with a hot phase outlet of the second-stage heat exchanger; the steam outlet of the deaerator is connected with the hot phase inlet of the third-stage heat exchanger; a first temperature measuring device is arranged on a cold phase outlet of the first-stage heat exchanger, a second temperature measuring device is arranged on a cold phase outlet of the second-stage heat exchanger, and a third temperature measuring device is arranged on a cold phase outlet of the third-stage heat exchanger; and an exhaust steam demister is arranged on an exhaust steam pipeline of the periodic blowdown flash tank.
2. The waste power plant steam exhaust and continuous drainage sewage waste heat recovery demisting system according to claim 1, characterized in that: the first-stage heat exchanger, the second-stage heat exchanger and the third-stage heat exchanger are all surface heat exchangers.
3. The waste power plant steam exhaust and continuous drainage sewage waste heat recovery demisting system according to claim 1, characterized in that: and the first and third heat exchangers are provided with air inlets.
4. The waste power plant steam exhaust and continuous drainage sewage waste heat recovery demisting system according to claim 1, characterized in that: the regulating valve group comprises a control system and a regulating valve, the control system is connected with the regulating valve, and the control system is further connected with a third temperature measuring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020445245.6U CN212132398U (en) | 2020-03-31 | 2020-03-31 | Waste heat recovery and demisting system for exhaust steam and continuous-exhaust sewage of garbage power station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020445245.6U CN212132398U (en) | 2020-03-31 | 2020-03-31 | Waste heat recovery and demisting system for exhaust steam and continuous-exhaust sewage of garbage power station |
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| CN212132398U true CN212132398U (en) | 2020-12-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111306527A (en) * | 2020-03-31 | 2020-06-19 | 中国联合工程有限公司 | System and method for recycling and demisting waste heat of exhaust steam and continuous exhaust sewage of garbage power station |
| CN113048505A (en) * | 2021-03-30 | 2021-06-29 | 攀钢集团西昌钢钒有限公司 | Exhaust steam recovery system and method for boiler air heater |
-
2020
- 2020-03-31 CN CN202020445245.6U patent/CN212132398U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111306527A (en) * | 2020-03-31 | 2020-06-19 | 中国联合工程有限公司 | System and method for recycling and demisting waste heat of exhaust steam and continuous exhaust sewage of garbage power station |
| CN113048505A (en) * | 2021-03-30 | 2021-06-29 | 攀钢集团西昌钢钒有限公司 | Exhaust steam recovery system and method for boiler air heater |
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