CN103836606A - Sewerage waste heat recovery device - Google Patents
Sewerage waste heat recovery device Download PDFInfo
- Publication number
- CN103836606A CN103836606A CN201210483431.9A CN201210483431A CN103836606A CN 103836606 A CN103836606 A CN 103836606A CN 201210483431 A CN201210483431 A CN 201210483431A CN 103836606 A CN103836606 A CN 103836606A
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- China
- Prior art keywords
- low pressure
- pressure
- tank
- sewer
- pipe
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- Pending
Links
- 238000011084 recovery Methods 0.000 title claims abstract description 15
- 239000002918 waste heat Substances 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 88
- 238000007701 flash-distillation Methods 0.000 claims description 11
- 150000003839 salts Chemical class 0.000 claims description 7
- 230000001351 cycling effect Effects 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000009834 vaporization Methods 0.000 claims description 4
- 230000008016 vaporization Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 239000010865 sewage Substances 0.000 abstract 9
- 238000000926 separation method Methods 0.000 abstract 4
- 230000009897 systematic effect Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention discloses a sewerage waste heat recovery device which comprises a high-pressure volume expansion tank, a low-pressure volume expansion tank, a high-pressure tank adjusting water pipeline, a low-pressure tank adjusting water pipeline, a high-pressure separation and steam collection pipe, a low-pressure separation and steam collection pipe, a sewage heat exchanger, a low-pressure non-heat-exchanged sewage pipeline, a low-pressure heat-exchanged sewage pipeline, a boiler make-up water pipe and a boiler blow-off pipe. The high-pressure volume expansion tank is connected with the boiler blow-off pipe, the high-pressure separation and steam collection pipe and the high-pressure tank adjusting water pipeline. The low-pressure volume expansion tank is connected with the high-pressure tank adjusting water pipeline, the low-pressure separation and steam collection pipe and the low-pressure tank adjusting water pipeline. The low-pressure tank adjusting water pipeline is connected with the low-pressure non-heat-exchanged sewage pipeline. The low-pressure non-heat-exchanged sewage pipeline is connected with the sewage heat exchanger. The sewage heat exchanger is connected with the low-pressure heat-exchanged sewage pipeline. The boiler make-up water pipe is connected with the sewage heat exchanger. The sewerage waste heat recovery device has the advantages of being reasonable and systematic in structure, simple, practical, convenient to install and operate, good in working environment, safe, reliable and the like.
Description
Technical field
The present invention relates to a kind of sewer waste-heat recovery device, be particularly useful for the continuous blow off equipment of thermal power plant large capacity unit boiler system.
Background technology
Heat power plant boiler system is in order to obtain the steam of high-quality, and the water quality that must ensure boiler water is in a stable indication range.And adopt continuous blowdown system of boiler mode just can make salt content, basicity or the phosphate content of boiler water be no more than the permissible value of regulation.
What present most occasion was used is to be equipped with corresponding continuous sewage-discharge volum expander for boiler according to different blowdown flow rates.In order to utilize as much as possible blowdown heat to replace the heat of the exhaust steam that pressure is high (being extracted steam from turbine), employing or improve the cooled temperature of sewer, or improve the pressure in flash vessel.And cause at last like this reducing in the feed water system of boiler condensing capacity so that vapor form was reclaimed.
Continuous blowdown flash tank receives continuous blowdown system of boiler water, turns to steam at continuous blowdown operating pressure next part steam, sends in the oxygen-eliminating device of relevant pressure, to reclaim working medium and heat; The sewer that in continuous blowdown flash tank, residue is not vaporized is discharged to trench.The heat that this part hot water of draining is taken away and water itself are exactly the one waste of resource.But for boiler operatiopn safety and guarantee steam quality, continuous blowdown is again necessary.But consider to wish to reduce as much as possible blowdown flow rate from economy and resource, thereby reduce the loss of water and the loss of heat.
Summary of the invention
The present invention has developed a kind of sewer waste-heat recovery device, its objective is a kind of system rational in infrastructure is provided, simple and practical, and it is convenient, easy to operate to install, good work environment, safe and reliable sewer waste-heat recovery device.
For achieving the above object, apparatus of the present invention are achieved through the following technical solutions, sewer waste-heat recovery device, comprise high pressure dilatation tank, low pressure dilatation tank, pressure pan regulates water lines, low pressure tank regulates water lines, high pressure disjoint set steam pipe, low pressure disjoint set steam pipe, sewer heat exchanger, low pressure is heat exchange sewer pipeline not, sewer pipeline after low pressure heat exchange, boiler feedwater pipe, boiler water blow-down pipe, boiler water blow-down pipe is connected with high pressure dilatation tank, high pressure dilatation tank is connected with high pressure disjoint set steam pipe, high pressure dilatation tank regulates water lines to be connected with pressure pan, pressure pan regulates water lines to be connected with low pressure dilatation tank, low pressure dilatation tank is connected with low pressure disjoint set steam pipe, low pressure dilatation tank regulates water lines to be connected with low pressure tank, low pressure tank regulate water lines and low pressure not heat exchange sewer pipeline be connected, low pressure not heat exchange sewer pipeline is connected with sewer heat exchanger, sewer heat exchanger is connected with sewer pipeline after low pressure heat exchange, boiler feedwater pipe is connected with sewer heat exchanger, the sewer of taking from the overheated saturation state of high salt concentration in boiler-steam dome enters high pressure dilatation tank through boiler water blow-down pipe, this high-temperature, the overheated saturation water of high enthalpy, along with its pressure reduces suddenly, the evaporation point of water reduces, make original saturation state destroyed, a part of water is emitted superheat becomes the saturation water under new pressure, part water absorbs evaporation latent heat and becomes steam, flash vaporization for the first time that Here it is, the steam salt content of gained meets boiler water quality requirement, it enters the equipment such as oxygen-eliminating device by high pressure disjoint set steam pipe and recycles, saturation water under new pressure regulates water lines to enter in low pressure dilatation tank by pressure pan again, to there is flash distillation for the second time as mentioned above, the initial steam producing utilizes again towards being discharged to cycling use of water equipment with low pressure disjoint set steam pipe, the new saturation water producing will enter sewer heat exchanger after low pressure tank regulates water lines, by the demineralized water heating in boiler feedwater pipe, twice flash distillation is to regulate water lines to regulate the flash distillation effect that reaches best by high-low pressure tank.
The invention has the beneficial effects as follows and utilize rational process layout mode to reach the recovery working medium heat of maximum limit and to reduce sewer temperature.
Brief description of the drawings
Fig. 1 is the system architecture schematic diagram of sewer waste heat recovery dress of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in further detail.
As shown in Figure 1, sewer waste heat recovery dress, comprise high pressure dilatation tank 2, low pressure dilatation tank 7, pressure pan regulates water lines 3, low pressure tank regulates water lines 8, high pressure disjoint set steam pipe 1, low pressure disjoint set steam pipe 6, sewer heat exchanger 11, low pressure is heat exchange sewer pipeline 9 not, sewer pipeline 10 after low pressure heat exchange, boiler feedwater pipe 12, boiler water blow-down pipe 4, boiler water blow-down pipe 4 is connected with high pressure dilatation tank 2, high pressure dilatation tank 2 is connected with high pressure disjoint set steam pipe 1, high pressure dilatation tank 2 regulates water lines 3 to be connected with pressure pan, pressure pan regulates water lines 3 to be connected with low pressure dilatation tank 7, low pressure dilatation tank 7 is connected with low pressure disjoint set steam pipe 6, low pressure dilatation tank 7 regulates water lines 8 to be connected with low pressure tank, low pressure tank regulate water lines 8 and low pressure not heat exchange sewer pipeline 9 be connected, low pressure not heat exchange sewer pipeline 9 is connected with sewer heat exchanger 11, sewer heat exchanger 11 is connected with sewer pipeline 10 after low pressure heat exchange, boiler feedwater pipe 12 is connected with sewer heat exchanger 11, the sewer of taking from the overheated saturation state of high salt concentration in boiler-steam dome 5 enters high pressure dilatation tank 2 through boiler water blow-down pipe 4, this high-temperature, the overheated saturation water of high enthalpy, along with its pressure reduces suddenly, the evaporation point of water reduces, make original saturation state destroyed, a part of water is emitted superheat becomes the saturation water under new pressure, part water absorbs evaporation latent heat and becomes steam, flash vaporization for the first time that Here it is, the steam salt content of gained meets boiler water quality requirement, it enters the equipment such as oxygen-eliminating device by high pressure disjoint set steam pipe 1 and recycles, saturation water under new pressure regulates water lines 3 to enter in low pressure dilatation tank 7 by pressure pan again, to there is flash distillation for the second time as mentioned above, the initial steam producing utilizes again towards being discharged to cycling use of water equipment with low pressure disjoint set steam pipe 6, the new saturation water producing will enter sewer heat exchanger 11 after low pressure tank regulates water lines 8, by the demineralized water heating in boiler feedwater pipe 12, twice flash distillation is to regulate water lines 3 and 8 to regulate the flash distillation effect that reaches best by high-low pressure tank.
Claims (4)
1. a sewer waste-heat recovery device, comprise high pressure dilatation tank (2), low pressure dilatation tank (7), pressure pan regulates water lines (3), low pressure tank regulates water lines (8), high pressure disjoint set steam pipe (1), low pressure disjoint set steam pipe (6), sewer heat exchanger (11), low pressure is heat exchange sewer pipeline (9) not, sewer pipeline (10) after low pressure heat exchange, boiler feedwater pipe (12), boiler water blow-down pipe (4), it is characterized in that: boiler water blow-down pipe (4) is connected with high pressure dilatation tank (2), high pressure dilatation tank (2) is connected with high pressure disjoint set steam pipe (1), high pressure dilatation tank (2) regulates water lines (3) to be connected with pressure pan, pressure pan regulates water lines (3) to be connected with low pressure dilatation tank (7), low pressure dilatation tank (7) is connected with low pressure disjoint set steam pipe (6), low pressure dilatation tank (7) regulates water lines (8) to be connected with low pressure tank, low pressure tank regulate water lines (8) with low pressure not heat exchange sewer pipeline (9) be connected, low pressure not heat exchange sewer pipeline (9) is connected with sewer heat exchanger (11), sewer heat exchanger (11) is connected with sewer pipeline (10) after low pressure heat exchange, boiler feedwater pipe (12) is connected with sewer heat exchanger (11), the sewer of taking from the overheated saturation state of high salt concentration in boiler-steam dome (5) enters high pressure dilatation tank (2) flash vaporization for the first time through boiler water blow-down pipe (4), the steam of gained enters the equipment such as oxygen-eliminating device by high pressure disjoint set steam pipe (1) and recycles, saturation water under new pressure regulates water lines (3) to enter into flash distillation for the second time in low pressure dilatation tank (7) by pressure pan again, the initial steam producing is discharged to cycling use of water equipment with low pressure disjoint set steam pipe (6), new saturation water will enter sewer heat exchanger (11) after low pressure tank regulates water lines (8), by the demineralized water heating in boiler feedwater pipe (12), twice flash distillation is to regulate water lines (3) and (8) to regulate the flash distillation effect that reaches best by high-low pressure tank.
2. sewer waste-heat recovery device according to claim 1, it is characterized in that: boiler water blow-down pipe (4) is connected with high pressure dilatation tank (2), high pressure dilatation tank (2) is connected with high pressure disjoint set steam pipe (1), high pressure dilatation tank (2) regulates water lines (3) to be connected with pressure pan, pressure pan regulates water lines (3) to be connected with low pressure dilatation tank (7), low pressure dilatation tank (7) is connected with low pressure disjoint set steam pipe (6), low pressure dilatation tank (7) regulates water lines (8) to be connected with low pressure tank, low pressure tank regulate water lines (8) with low pressure not heat exchange sewer pipeline (9) be connected, low pressure not heat exchange sewer pipeline (9) is connected with sewer heat exchanger (11), sewer heat exchanger (11) is connected with sewer pipeline (10) after low pressure heat exchange, boiler feedwater pipe (12) is connected with sewer heat exchanger (11).
3. sewer waste-heat recovery device according to claim 1, it is characterized in that: the sewer of taking from the overheated saturation state of high salt concentration in boiler-steam dome (5) enters high pressure dilatation tank (2) flash vaporization for the first time through boiler water blow-down pipe (4), and the steam of gained enters the equipment such as oxygen-eliminating device by high pressure disjoint set steam pipe (1) and recycles; Saturation water under new pressure regulates water lines (3) to enter into flash distillation for the second time in low pressure dilatation tank (7) by pressure pan again, and the initial steam of generation utilizes again towards being discharged to cycling use of water equipment with low pressure disjoint set steam pipe (6).
4. sewer waste-heat recovery device according to claim 1, it is characterized in that: after the flash distillation of low pressure tank secondary, the new saturation water producing will enter sewer heat exchanger (11) after low pressure tank regulates water lines (8), by the demineralized water heating in boiler feedwater pipe (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210483431.9A CN103836606A (en) | 2012-11-25 | 2012-11-25 | Sewerage waste heat recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210483431.9A CN103836606A (en) | 2012-11-25 | 2012-11-25 | Sewerage waste heat recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103836606A true CN103836606A (en) | 2014-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210483431.9A Pending CN103836606A (en) | 2012-11-25 | 2012-11-25 | Sewerage waste heat recovery device |
Country Status (1)
| Country | Link |
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| CN (1) | CN103836606A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114935A (en) * | 2015-09-21 | 2015-12-02 | 山东理工大学 | Cloud measurement and control boiler waste heat system for intelligently controlling output temperature |
| CN106479524A (en) * | 2016-11-11 | 2017-03-08 | 中冶焦耐(大连)工程技术有限公司 | Dry quenching boiler blowdown water reuse device and process |
| CN109578973A (en) * | 2018-11-02 | 2019-04-05 | 清华大学 | Oxygen-eliminating device system and working method |
| CN112128731A (en) * | 2020-09-30 | 2020-12-25 | 东方菱日锅炉有限公司 | Blowdown steam recovery system of multi-pressure boiler |
-
2012
- 2012-11-25 CN CN201210483431.9A patent/CN103836606A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114935A (en) * | 2015-09-21 | 2015-12-02 | 山东理工大学 | Cloud measurement and control boiler waste heat system for intelligently controlling output temperature |
| CN105114935B (en) * | 2015-09-21 | 2017-05-31 | 山东理工大学 | The cloud observing and controlling boiler afterheat system of Based Intelligent Control output temperature |
| CN106479524A (en) * | 2016-11-11 | 2017-03-08 | 中冶焦耐(大连)工程技术有限公司 | Dry quenching boiler blowdown water reuse device and process |
| CN106479524B (en) * | 2016-11-11 | 2022-05-06 | 中冶焦耐(大连)工程技术有限公司 | Dry quenching boiler sewage recycling device and process |
| CN109578973A (en) * | 2018-11-02 | 2019-04-05 | 清华大学 | Oxygen-eliminating device system and working method |
| CN109578973B (en) * | 2018-11-02 | 2024-01-02 | 清华大学 | Deaerator system and working method |
| CN112128731A (en) * | 2020-09-30 | 2020-12-25 | 东方菱日锅炉有限公司 | Blowdown steam recovery system of multi-pressure boiler |
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Application publication date: 20140604 |