CN203336572U - Bypass economizer used for comprehensive utilization of flue gas waste heat - Google Patents
Bypass economizer used for comprehensive utilization of flue gas waste heat Download PDFInfo
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- CN203336572U CN203336572U CN2013203943446U CN201320394344U CN203336572U CN 203336572 U CN203336572 U CN 203336572U CN 2013203943446 U CN2013203943446 U CN 2013203943446U CN 201320394344 U CN201320394344 U CN 201320394344U CN 203336572 U CN203336572 U CN 203336572U
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Abstract
The utility model relates to a bypass economizer used for comprehensive utilization of flue gas waste heat. Flue gas loss is the most important heat loss in boiler operation, exhaust gas temperature of a number of boilers in thermal power plants in china exceeds a design value largely, but so far no economizer can save coals by the utilization of the flue gas waste heat. The bypass economizer used for the comprehensive utilization of the flue gas waste heat comprises a low-voltage economizer body (1) which is connected with a low-voltage economizer inlet collecting box (2), a low-voltage economizer inlet sub-control collecting box (3), a low-voltage economizer outlet sub-control small collecting box (4), a low-voltage economizer outlet collecting box (5), a low-voltage heater A (6) and a circulating water pump (7), and the circulating water pump is respectively connected with a low-voltage heater B (8), a low-voltage heater C (9) and a low-voltage heater D (10). The bypass economizer used for the comprehensive utilization of the flue gas waste heat is used in the boiler and used for coal saving of the boiler.
Description
technical field:
the utility model relates to a kind of bypass economizer for the fume afterheat comprehensive utilization.
background technology:
flue gas loss is a most important heat loss in boiler operatiopn, and it is more that a lot of exhaust gas temperatures of Power Plant in China all surpass design load.But at present also do not have a kind of coal saving device can utilize fume afterheat to carry out province's coal.
summary of the invention:
the purpose of this utility model is to provide a kind of bypass economizer for the fume afterheat comprehensive utilization.
above-mentioned purpose realizes by following technical scheme:
a kind of bypass economizer for the fume afterheat comprehensive utilization, its composition comprises: the low-pressure coal saver body, described low-pressure coal saver body with low economize the import header, lowly economize import sub-control header, lowly economize the little header of outlet sub-control, the low outlet header, low-pressure heater A, recirculating water pump economized is connected, described recirculating water pump is connected with low-pressure heater B, low-pressure heater C, low-pressure heater D respectively.
the described bypass economizer for fume afterheat comprehensive utilization, be equipped with hand sluice valve on described low-pressure coal saver body, water is sidelong air gate; The little header of described low province's outlet sub-control, the low outlet header of economizing are separately installed with wicket.
the described bypass economizer for the fume afterheat comprehensive utilization, be equipped with device for pressure measurement, temperature measurement device, import and export flowmeter between described low-pressure coal saver body and described low-pressure heater A.
the described bypass economizer for the fume afterheat comprehensive utilization, be equipped with temperature measurement device, import and export flowmeter, high temperature water inlet electric control valve between described low-pressure coal saver body and described low-pressure heater B.
the described bypass economizer for the fume afterheat comprehensive utilization, be equipped with temperature measurement device, import and export flowmeter, low temperature water inlet electric control valve, hand sluice valve between described low-pressure coal saver body and described low-pressure heater C, described low-pressure heater D.
beneficial effect:
the utility model is the parallel layout of bypass economizer and air preheater, the condensate water of coming from condensate pump absorbs smoke exhaust heat in low-pressure coal saver, reduce exhaust gas temperature, self is heated, return to again the steam turbine low-pressure heater system after the rising temperature, replace the effect of part low-pressure heater, save the regenerative steam of part steam turbine, in the situation that the steam turbine throttle flow is constant, drawing gas of saving returned to the steam turbine acting of expanding that continues from extraction opening, therefore in the situation that Fuel Consumption is constant, can obtain more generated energy, reach the reduction coal consumption, the purpose of energy-saving and emission-reduction.
the accompanying drawing explanation:
accompanying drawing 1 is structural representation of the present utility model.
accompanying drawing 2 is schematic diagrames that the utility model is installed.
the specific embodiment:
embodiment 1:
a kind of bypass economizer for the fume afterheat comprehensive utilization, its composition comprises: low-pressure coal saver body 1, described low-pressure coal saver body and low import header 2, low import sub-control header 3, the low little header 4 of outlet sub-control, low outlet header 5, the low-pressure heater A of economizing of economizing of economizing of economizing, piece number: 16, recirculating water pump 15 connects, described recirculating water pump respectively with low-pressure heater B, piece number: 17, low-pressure heater C, piece number: 18, low-pressure heater D, piece number: 19 connect.
embodiment 2:
according to the described bypass economizer for fume afterheat comprehensive utilization of embodiment 1, on described low-pressure coal saver body, hand sluice valve 12 is installed, water is sidelong air gate 13; The little header of described low province's outlet sub-control, described low province outlet header are separately installed with wicket 14.
embodiment 3:
according to the described bypass economizer for the fume afterheat comprehensive utilization of embodiment 1 or 2, device for pressure measurement 11, temperature measurement device 10 are installed between described low-pressure coal saver body and described low-pressure heater A, import and export flowmeter 9.
embodiment 4:
according to the described bypass economizer for the fume afterheat comprehensive utilization of embodiment 1 or 2, temperature measurement device, import and export flowmeter, high temperature water inlet electric control valve 7 are installed between described low-pressure coal saver body and described low-pressure heater B.
embodiment 5:
according to the described bypass economizer for the fume afterheat comprehensive utilization of embodiment 1 or 2, temperature measurement device, import and export flowmeter, low temperature water inlet electric control valve 6, hand sluice valve are installed between described low-pressure coal saver body and described low-pressure heater C, described low-pressure heater D.
embodiment 6:
according to the described bypass economizer for the fume afterheat comprehensive utilization of embodiment 1 or 2, as shown in Figure 2, increase bypass economizer 20 at boiler tail, conventional economizer exit is divided into two flue part of smoke and advances air preheater 21, another part advances the bypass economizer, be provided with baffle door at bypass economizer entrance and can regulate aperture, by gas baffle to reach the purpose of regulating flue gas flow.The medium that inside is flow through is part of low pressure condensate water that condensate pump is confessed.
the flue gas of boiler tail is divided into two part parts and enters air preheater, and a part enters the bypass economizer.
Claims (5)
1. the bypass economizer for fume afterheat comprehensive utilization, its composition comprises: the low-pressure coal saver body, it is characterized in that: described low-pressure coal saver body with low economize the import header, lowly economize import sub-control header, lowly economize the little header of outlet sub-control, the low outlet header, low-pressure heater A, recirculating water pump economized is connected, described recirculating water pump is connected with low-pressure heater B, low-pressure heater C, low-pressure heater D respectively.
2. the bypass economizer for fume afterheat comprehensive utilization according to claim 1 is characterized in that: on described low-pressure coal saver body, hand sluice valve is installed, water is sidelong air gate; The little header of described low province's outlet sub-control, the low outlet header of economizing are separately installed with wicket.
3. the bypass economizer for the fume afterheat comprehensive utilization according to claim 1 and 2, is characterized in that: device for pressure measurement, temperature measurement device are installed between described low-pressure coal saver body and described low-pressure heater A, import and export flowmeter.
4. the bypass economizer for the fume afterheat comprehensive utilization according to claim 1 and 2, is characterized in that: temperature measurement device, import and export flowmeter, high temperature water inlet electric control valve are installed between described low-pressure coal saver body and described low-pressure heater B.
5. the bypass economizer for the fume afterheat comprehensive utilization according to claim 1 and 2, is characterized in that: temperature measurement device, import and export flowmeter, low temperature water inlet electric control valve, hand sluice valve are installed between described low-pressure coal saver body and described low-pressure heater C, described low-pressure heater D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203943446U CN203336572U (en) | 2013-07-04 | 2013-07-04 | Bypass economizer used for comprehensive utilization of flue gas waste heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203943446U CN203336572U (en) | 2013-07-04 | 2013-07-04 | Bypass economizer used for comprehensive utilization of flue gas waste heat |
Publications (1)
| Publication Number | Publication Date |
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| CN203336572U true CN203336572U (en) | 2013-12-11 |
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| CN2013203943446U Expired - Lifetime CN203336572U (en) | 2013-07-04 | 2013-07-04 | Bypass economizer used for comprehensive utilization of flue gas waste heat |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104776724A (en) * | 2014-01-09 | 2015-07-15 | 宝山钢铁股份有限公司 | Coal economizer equipment for afterheat recovery and application method thereof |
| CN105003904A (en) * | 2015-08-05 | 2015-10-28 | 北京京桥热电有限责任公司 | Boiler coal economizer emptying device |
| CN106224936A (en) * | 2016-08-25 | 2016-12-14 | 中国大唐集团科学技术研究院有限公司华东分公司 | A kind of low-level (stack-gas) economizer optimizes operation control system and control method thereof |
-
2013
- 2013-07-04 CN CN2013203943446U patent/CN203336572U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104776724A (en) * | 2014-01-09 | 2015-07-15 | 宝山钢铁股份有限公司 | Coal economizer equipment for afterheat recovery and application method thereof |
| CN104776724B (en) * | 2014-01-09 | 2017-01-04 | 宝山钢铁股份有限公司 | A kind of waste heat recovery economizer equipment and using method thereof |
| CN105003904A (en) * | 2015-08-05 | 2015-10-28 | 北京京桥热电有限责任公司 | Boiler coal economizer emptying device |
| CN105003904B (en) * | 2015-08-05 | 2017-03-29 | 北京京桥热电有限责任公司 | A kind of boiler economizer emptier |
| CN106224936A (en) * | 2016-08-25 | 2016-12-14 | 中国大唐集团科学技术研究院有限公司华东分公司 | A kind of low-level (stack-gas) economizer optimizes operation control system and control method thereof |
| CN106224936B (en) * | 2016-08-25 | 2018-11-27 | 中国大唐集团科学技术研究院有限公司华东分公司 | A kind of control method of low-level (stack-gas) economizer optimization operation control system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131211 |
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| CX01 | Expiry of patent term |