CN202141025U - Double-pressure smoke waste heat generating system - Google Patents
Double-pressure smoke waste heat generating system Download PDFInfo
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- CN202141025U CN202141025U CN201120253002U CN201120253002U CN202141025U CN 202141025 U CN202141025 U CN 202141025U CN 201120253002 U CN201120253002 U CN 201120253002U CN 201120253002 U CN201120253002 U CN 201120253002U CN 202141025 U CN202141025 U CN 202141025U
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Abstract
The utility model discloses a double-pressure smoke waste heat generating system which utilizes smoke waste heat to generate electricity, so as to improve the heat utilization rate of the smoke. The double-pressure smoke waste heat generating system comprises a waste heat boiler, a steam turbine and a generating system formed by a deaerator, a smoke inlet and a smoke outlet are arranged on the waste heat boiler, a high-pressure heat exchanging device and a low-pressure heat exchanging device are sequentially distributed from the smoke inlet and the smoke outlet in the waste heat boiler, a high-pressure outlet of the high-pressure heat exchanging device is communicated with the steam turbine, a high-pressure inlet of the high-pressure heat exchanging device is communicated with a water supplying port of the deaerator, a low-pressure outlet of the low-pressure heat exchanging device is communicated with a steam inlet of the deaerator, a low-pressure inlet of the low-pressure heat exchanging device is communicated with the water supplying port of the deaerator, a steam leading-out pipeline is arranged in the generating system, and the steam leading-out pipeline is arranged on a pipeline between the low-pressure outlet of the low-pressure heat exchanging device and the steam inlet of the deaerator, so as to be capable of improving the intensity of the steam turbine and effectively utilizing the heat of the smoke.
Description
Technical field
The utility model relates to a kind of electricity generation system, is specifically related to a kind of two Hair Fixer electric systems of fume afterheat that utilize the fume afterheat generating.
Background technology
At present, the system that utilizes fume afterheat to generate electricity mainly includes waste heat boiler, steam turbine and oxygen-eliminating device, and waste heat boiler is provided with smoke inlet and exhanst gas outlet, in waste heat boiler, is furnished with high-pressure heat-exchange device and low pressure heat-exchanger rig.Its operation principle is: the cold water through after the oxygen-eliminating device deoxygenation is sent to high-pressure heat-exchange device and low pressure heat-exchanger rig; The flue gas of high temperature carries out heat exchange with high-pressure heat-exchange device and low pressure heat-exchanger rig after smoke inlet gets into waste heat boiler; The high steam that produces after the high-pressure heat-exchange device heat exchange is used to deliver to steam turbine power generation; Steam after generating is accomplished is delivered to oxygen-eliminating device to high-pressure heat-exchange device and the water supply of low pressure heat-exchanger rig after being condensed into cold water through condenser once more, and low-pressure steam that produces after the heat exchange of low pressure heat-exchanger rig or hot water are used to get back to oxygen-eliminating device and carry out the deoxygenation operation.It mainly has following shortcoming:
1, in existing electricity generation system, wherein some steam is extracted out and is used for industry and goes up other place that needs heat supply and use, but this steam is drawn pipeline and is arranged between the outlet and steam turbine of high-pressure heat-exchange device when extracting out; This part steam is high-grade superheated steam, though consumption can reduce, high-grade superheated steam spends heat supply; Reduced the efficiency of utilization of whole system; Simultaneously, cause the rate of air sucked in required of steam turbine to increase, that is increased the load of steam turbine; Need the cylinder body equipment of steam turbine be provided with enough greatly, also just cause the reduction of steam turbine cylinder equipment intensity.
2, low-pressure steam that produces after the heat exchange of low pressure heat-exchanger rig or hot water are used to get back to oxygen-eliminating device and carry out deoxygenation when operation; Because steam or hot water need circulate between low pressure heat-exchanger rig and oxygen-eliminating device; Steam or hot water can not discharged; After steam or hot water temperature arrive to a certain degree, its can be not again with waste heat boiler in flue gas carry out heat exchange, cause the heat utilization efficiency of flue gas lower; In addition; Utilize hot water to carry out in the low pressure heat-exchanger rig of deoxygenation; Because the heat-carrying capacity of water, with vapor phase than far short of what is expected, carry out after the heat exchange thermal source carrier so needs pump into a large amount of water in this low pressure heat-exchanger rig as oxygen-eliminating device; Cause and need powerful water pump be set at rear, oxygen-eliminating device feed water inlet, plant consumption is big.
The utility model content
The utility model technical problem to be solved provides a kind of two Hair Fixer electric systems of fume afterheat that can effectively improve the flue gas utilization rate.
The utility model solves the technical scheme that its technical problem adopted: the two Hair Fixer electric systems of fume afterheat; Comprise the electricity generation system that waste heat boiler, steam turbine and oxygen-eliminating device form; Waste heat boiler is provided with smoke inlet and exhanst gas outlet; From being disposed in order high-pressure heat-exchange device and low pressure heat-exchanger rig between smoke inlet to the exhanst gas outlet, the high-pressure outlet of said high-pressure heat-exchange device is communicated with steam turbine in waste heat boiler, and the high pressure entry of high-pressure heat-exchange device is communicated with the feed water inlet of oxygen-eliminating device; The low tension outlet of low pressure heat-exchanger rig is communicated with the steam inlet of oxygen-eliminating device; The low-pressure inlet of low pressure heat-exchanger rig is communicated with the feed water inlet of oxygen-eliminating device, in electricity generation system, is provided with steam and draws pipeline, and said steam is drawn pipeline and is arranged on the pipeline between the steam inlet of low tension outlet and oxygen-eliminating device of low pressure heat-exchanger rig.
Further be, said low pressure heat-exchanger rig comprises low-pressure superheater and low pressure evaporator, and the outlet of low pressure evaporator connects the inlet of low-pressure superheater, and said low-pressure inlet is the inlet of low pressure evaporator, and low tension outlet is the outlet of low-pressure superheater; Be connected in series with the one-level economizer and the secondary economizer that are positioned at waste heat boiler between the high pressure entry of the feed water inlet of oxygen-eliminating device to high pressure heat-exchanger rig, said low-pressure superheater is movably arranged in the waste heat boiler.
Further be, said waste heat boiler has two, and steam turbine and oxygen-eliminating device are set to one respectively.
Further be that said oxygen-eliminating device adopts the pressure type oxygen-eliminating device.
Further be between steam turbine and oxygen-eliminating device, to be provided with condenser.
The beneficial effect of the utility model is: be arranged on the pipeline between the steam inlet of low tension outlet and oxygen-eliminating device of low pressure heat-exchanger rig because steam is drawn pipeline; But not be arranged on the high-pressure outlet and the pipeline between the steam turbine of high-pressure heat-exchange device; Can reduce the amount of drawing gas of steam turbine, dwindle the size of turbine bleed point, reduce the influence of extraction opening steam turbine cylinder intensity; Favourable to steam turbine cylinder equipment, and can reduce the cost of part steam turbine equipment; Simultaneously; Steam is drawn pipeline be arranged on the pipeline between the steam inlet of low tension outlet and oxygen-eliminating device of low pressure heat-exchanger rig, when oxygen-eliminating device utilized steam to carry out deoxygenation, unnecessary steam can be used for industry and goes up other place that needs heat supply and use; Make steam circulation time between low pressure heat-exchanger rig and oxygen-eliminating device; Must there be heat to draw pipeline and takes away, thereby will inevitably in the low pressure heat-exchanger rig, make the flue gas of water and high temperature carry out heat exchange, also just effectively utilize the heat of flue gas from steam; Improved heat utilization ratio, be particluarly suitable for applying in the afterheat generating system.
Description of drawings
Fig. 1 is the system architecture sketch map of the utility model.
Be labeled as among the figure: waste heat boiler 1, steam turbine 2, oxygen-eliminating device 3, smoke inlet 4, exhanst gas outlet 5, high pressure entry 6, feed water inlet 7, high-pressure outlet 8, low tension outlet 9, steam inlet 10, low-pressure inlet 11, steam are drawn pipeline 12, low-pressure superheater 13, low pressure evaporator 14, one-level economizer 15, secondary economizer 16, condenser 17.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
As shown in Figure 1; The two Hair Fixer electric systems of the fume afterheat of the utility model; Comprise the electricity generation system that waste heat boiler 1, steam turbine 2 and oxygen-eliminating device 3 form; Waste heat boiler 1 is provided with smoke inlet 4 and exhanst gas outlet 5; From being disposed in order high-pressure heat-exchange device and low pressure heat-exchanger rig between smoke inlet 4 to the exhanst gas outlet 5, the high-pressure outlet 8 of said high-pressure heat-exchange device is communicated with steam turbine 2 in waste heat boiler 1, and the high pressure entry 6 of high-pressure heat-exchange device is communicated with the feed water inlet 7 of oxygen-eliminating device 3; The low tension outlet 9 of low pressure heat-exchanger rig is communicated with the steam inlet 10 of oxygen-eliminating device 3; The low-pressure inlet 11 of low pressure heat-exchanger rig is communicated with the feed water inlet 7 of oxygen-eliminating device 3, in electricity generation system, is provided with steam and draws pipeline 12, and said steam is drawn pipeline 12 and is arranged on the pipeline between the steam inlet 10 of low tension outlet 9 and oxygen-eliminating device 3 of low pressure heat-exchanger rig.Because steam is drawn pipeline 12 to be arranged on the pipeline between the steam inlet 10 of low tension outlet 9 and oxygen-eliminating device 3 of low pressure heat-exchanger rig; But not be arranged on the high-pressure outlet 8 and the pipeline between the steam turbine 2 of high-pressure heat-exchange device; Can reduce the amount of drawing gas of steam turbine 2, dwindle the size of steam turbine 2 extraction openings, reduce the influence of extraction opening steam turbine 2 cylinder strengths; Favourable to steam turbine cylinder equipment, and can reduce the cost of part steam turbine equipment; Simultaneously; Steam is drawn pipeline 12 to be arranged on the pipeline between the steam inlet 10 of low tension outlet 9 and oxygen-eliminating device 3 of low pressure heat-exchanger rig; When oxygen-eliminating device 3 utilized steam to carry out deoxygenation, unnecessary steam can be used for industry to be gone up other place that needs heat supply and uses, and made steam circulation time between low pressure heat-exchanger rig and oxygen-eliminating device 3; Must have heat to draw pipeline 12 from steam takes away; Thereby will inevitably in the low pressure heat-exchanger rig, make the flue gas of water and high temperature carry out heat exchange, also just effectively utilize the heat of flue gas, improve heat utilization ratio.
In the above-described embodiment; The low pressure heat-exchanger rig can be fixed on a certain position in the waste heat boiler 1; But as preferred mode, said low pressure heat-exchanger rig comprises low-pressure superheater 13 and low pressure evaporator 14, and the outlet of low pressure evaporator 14 connects the inlet of low-pressure superheater 13; Said low-pressure inlet 11 is the inlet of low pressure evaporator 14, and low tension outlet 9 is the outlet of low-pressure superheater 13; Be connected in series with the one-level economizer 15 and secondary economizer 16 that are positioned at waste heat boiler 1 between the high pressure entry 6 of feed water inlet 7 to the high pressure heat-exchanger rig of oxygen-eliminating device 3, said low-pressure superheater 13 is movably arranged in the waste heat boiler 1.During work; Water after the deoxygenation gets into low pressure evaporator 14 and produces low-pressure saturated steam; Low-pressure saturated steam gets into low-pressure superheater 13, and overheated back steam is sent oxygen-eliminating device 3 to and is used for deoxygenation, and unnecessary steam is drawn pipeline 12 from steam and drawn and be used to supply other local use of factory.If other local steam quality of using of factory is had relatively high expectations; Can low-pressure superheater 13 be arranged on secondary economizer 16 the place aheads; If require quality not high, can low-pressure superheater 13 be arranged between one-level economizer 15 and the secondary economizer 16 or be arranged on one-level economizer 15 rears, the place ahead of indication and rear are determined by the flow direction of high-temperature flue gas here; The position that flue gas arrives first is the place ahead, after to the position be the rear.
For the investment of saving system, said waste heat boiler 1 has two, and steam turbine 2 is set to one respectively with oxygen-eliminating device 3.Promptly adopt two waste heat boilers, 1 a shared oxygen-eliminating device 3, simultaneously, two waste heat boilers 1 carry out the air feed generating to a steam turbine 2 simultaneously.
Control waste heat boiler 1 terminal heating surface temperature in order to control deoxygenation pressure, said oxygen-eliminating device 3 adopts the pressure type oxygen-eliminating device.This pressure type oxygen-eliminating device can according to the content of SO2 in the flue gas what, adjust out corresponding flue gas dew point temperature, inverse goes out controlled pressure and regulates control oxygen-eliminating device 3 and under this pressure, move, thereby can avoid the cold end corrosion of waste heat boiler 1 terminal heating surface.
In above embodiment, the running water in the factory capable of using supplies water to oxygen-eliminating device 3, but for energy savings, between steam turbine 2 and oxygen-eliminating device 3, is provided with condenser 17.Like this, steam can carry out condensation and deliver to oxygen-eliminating device 3 once more after passing to steam turbine 2 generatings through condenser 17, and delivers to waste heat boiler 1 heat exchange formation steam once more through oxygen-eliminating device 3, thereby has practiced thrift water resource.
Claims (5)
1. two Hair Fixer electric systems of fume afterheat; Comprise the electricity generation system that waste heat boiler (1), steam turbine (2) and oxygen-eliminating device (3) form; Waste heat boiler (1) is provided with smoke inlet (4) and exhanst gas outlet (5); In waste heat boiler (1), between smoke inlet (4) to exhanst gas outlet (5), high-pressure heat-exchange device and low pressure heat-exchanger rig have been disposed in order; The high-pressure outlet of said high-pressure heat-exchange device (8) is communicated with steam turbine (2); The high pressure entry of high-pressure heat-exchange device (6) is communicated with the feed water inlet (7) of oxygen-eliminating device (3), and the low tension outlet of low pressure heat-exchanger rig (9) is communicated with the steam inlet (10) of oxygen-eliminating device (3), and the low-pressure inlet of low pressure heat-exchanger rig (11) is communicated with the feed water inlet (7) of oxygen-eliminating device (3); In electricity generation system, be provided with steam and draw pipeline (12), it is characterized in that: said steam is drawn pipeline (12) and is arranged on the pipeline between the steam inlet (10) of low tension outlet (9) and oxygen-eliminating device (3) of low pressure heat-exchanger rig.
2. the two Hair Fixer electric systems of fume afterheat as claimed in claim 1; It is characterized in that: said low pressure heat-exchanger rig comprises low-pressure superheater (13) and low pressure evaporator (14); The outlet of low pressure evaporator (14) connects the inlet of low-pressure superheater (13); Said low-pressure inlet (11) is the inlet of low pressure evaporator (14), and low tension outlet (9) is the outlet of low-pressure superheater (13); Be connected in series with the one-level economizer (15) and secondary economizer (16) that are positioned at waste heat boiler (1) between the high pressure entry (6) of feed water inlet (7) to the high pressure heat-exchanger rig of oxygen-eliminating device (3), said low-pressure superheater (13) is movably arranged in the waste heat boiler (1).
3. according to claim 1 or claim 2 two Hair Fixer electric systems of fume afterheat, it is characterized in that: said waste heat boiler (1) has two, and steam turbine (2) is set to one respectively with oxygen-eliminating device (3).
4. the two Hair Fixer electric systems of fume afterheat as claimed in claim 3, it is characterized in that: said oxygen-eliminating device (3) adopts the pressure type oxygen-eliminating device.
5. the two Hair Fixer electric systems of fume afterheat as claimed in claim 4 is characterized in that: between steam turbine (2) and oxygen-eliminating device (3), be provided with condenser (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120253002U CN202141025U (en) | 2011-07-18 | 2011-07-18 | Double-pressure smoke waste heat generating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120253002U CN202141025U (en) | 2011-07-18 | 2011-07-18 | Double-pressure smoke waste heat generating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202141025U true CN202141025U (en) | 2012-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120253002U Withdrawn - After Issue CN202141025U (en) | 2011-07-18 | 2011-07-18 | Double-pressure smoke waste heat generating system |
Country Status (1)
| Country | Link |
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| CN (1) | CN202141025U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102374514A (en) * | 2011-07-18 | 2012-03-14 | 成都四通新能源技术有限公司 | Flue gas waste heat based dual-pressure power generation system |
| CN104632307B (en) * | 2014-12-12 | 2016-01-20 | 芜湖新兴铸管有限责任公司 | The application process of a kind of Iron And Steel Plant low pressure steam reclaiming system |
-
2011
- 2011-07-18 CN CN201120253002U patent/CN202141025U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102374514A (en) * | 2011-07-18 | 2012-03-14 | 成都四通新能源技术有限公司 | Flue gas waste heat based dual-pressure power generation system |
| CN102374514B (en) * | 2011-07-18 | 2013-11-27 | 成都昊特新能源技术股份有限公司 | Flue gas waste heat based dual-pressure power generation system |
| CN104632307B (en) * | 2014-12-12 | 2016-01-20 | 芜湖新兴铸管有限责任公司 | The application process of a kind of Iron And Steel Plant low pressure steam reclaiming system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHENGDU HOT NEW ENERGY TECHNOLOGY CO., LTD. Free format text: FORMER NAME: CHENGDU STONE NEW ENERGY TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: The people of Wuhou District road Chengdu city Sichuan province 610041 four Branch Road No. 3 National 863 software incubator base in Sichuan on the third floor Patentee after: Chengdu Hot New Energy Technology Co., Ltd. Address before: The people of Wuhou District road Chengdu city Sichuan province 610041 four Branch Road No. 3 Patentee before: Chengdu Stone New Energy Technology Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: The people of Wuhou District road Chengdu city Sichuan province 610041 four Branch Road No. 3 Patentee after: Chengdu Hot New Energy Technology Co., Ltd. Address before: The people of Wuhou District road Chengdu city Sichuan province 610041 four Branch Road No. 3 National 863 software incubator base in Sichuan on the third floor Patentee before: Chengdu Hot New Energy Technology Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20120208 Effective date of abandoning: 20131127 |
|
| RGAV | Abandon patent right to avoid regrant |