CN100408192C - Residual-heat used type electric dust separator and its application system - Google Patents
Residual-heat used type electric dust separator and its application system Download PDFInfo
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- CN100408192C CN100408192C CNB2004100733494A CN200410073349A CN100408192C CN 100408192 C CN100408192 C CN 100408192C CN B2004100733494 A CNB2004100733494 A CN B2004100733494A CN 200410073349 A CN200410073349 A CN 200410073349A CN 100408192 C CN100408192 C CN 100408192C
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- residual heat
- electric cleaner
- utilization
- electric dust
- dust remover
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The present invention discloses a residual heat utilization type electric dust remover and an application system thereof. One residual heat utilization type electric dust remover is arranged between a smoke outlet of a boiler and a chimney, and a metal anode plate of the conventional electric dust remover is designed into a residual heat exchanger by the residual heat utilization type electric dust remover. The residual heat exchanger is used for absorbing smoke discharge residual heat. Water which needs to be heated, such as condensed water in a thermal power plant and the like is heated in the production process, and thereby, the purpose of energy saving is achieved. The residual heat utilization type electric dust remover recycles the smoke discharge residual heat, and simultaneously, the residual heat utilization type electric dust remover still performs the high efficiency dust removing function of the conventional electric dust remover. The present invention has the advantages of less investment, no increase of the resistance force of a smoke wind system, convenient and flexible operation, large heat exchange area and obvious energy saving benefit. A place does not need to be occupied, and the smoke discharge temperature can be regulated and controlled. A 100MW thermal power generating unit uses the residual heat utilization type electric dust remover, the smoke discharge temperature of the boiler can be reduced by more or less 20 DEG C, the standard coal can be saved by about 2300t per year, and the annual economic benefit can reach more than 600000 yuan. The residual heat utilization type electric dust remover and the application system of the residual heat utilization type electric dust remover have wide application prospects in a thermal power generation line and other lines.
Description
Technical field
The invention belongs to the electrostatic precipitation technology field, relate to the method for heat recovery, particularly a kind of UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner and application system thereof that is used for the boiler flue afterbody.
Background technology
Because the efficiency of dust collection height of electric cleaner can reach high-level environmental requirement, so be used widely in modern large-size thermal power plant, cement plant, has been reality out of question.But its metal wastage bulky, manufacture process is big, has been known as the fourth-largest equipment in thermal power plant, and function singleness, only can dedusting, cost an arm and a leg, and be its fatal shortcoming.
On the other hand, the flue gas that the heat power plant boiler back-end ductwork is discharged has 120 ℃～140 ℃ temperature, and individual other can reach 160 ℃～temperature more than 200 ℃, wasted a large amount of energy.
Summary of the invention
Defective and deficiency at the existence of above-mentioned background technology, the objective of the invention is to, a kind of UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner and application system thereof are provided, this UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner places the flue afterbody, the environmental-protecting performance of existing high-effective dust-removing can use designed system recoveries to utilize the smoke discharging residual heat of boiler as waste-heat recovery device again, reduce exhaust gas temperature, reach the purpose of energy savings.
To achieve these goals, the technical solution used in the present invention is, a kind of UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner, it is characterized in that, it comprises a plurality of finned tube heat exchange elements that are made of the metallic anode plate of electric cleaner, the finned tube heat exchange element by condensate pipe series connection in groups, group with organize between inlet header and outlet header formation in parallel pole plate heat exchanger by being arranged on UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner two ends, also be provided with vibrator in the pole plate heat exchanger.
Utilize the residual neat recovering system of above-mentioned UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner preparation, comprise chimney, boiler, oxygen-eliminating device, a plurality of low-pressure heater, organize control valve, condenser etc. more; Condenser is connected with the low-pressure heater of a plurality of polyphones by control valve and pipeline, and low-pressure heater is communicated with oxygen-eliminating device by pipeline; It is characterized in that:
Comprise above-mentioned UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner in this system in addition, this UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner is arranged between the outlet flue and chimney of boiler; A part of condensate water that the low-pressure heater of contacting in the inlet header of UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner and the therrmodynamic system comes out is passed through pipeline connection, make condensate water and flue gas in the pole plate heat exchanger, carry out the reflux type heat exchange, flowed in the oxygen-eliminating device by the outlet header of the condensate water after the flue gas heating through UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner.
The condensate water that described condenser flows out is behind certain low-pressure heater, and be divided into two-way: the one tunnel flows to the higher next stage low-pressure heater of extraction pressure; Another road flows into UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner, and the place of drawing that enters the condensate water of UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner can be after any low-pressure heater, or simultaneously after many low-pressure heaters.
UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner of the present invention is an electric cleaner, also is an energy-saving appliance that utilizes waste heat.It utilizes positive plate double as heat exchange element usefulness huge in the electric cleaner, thereby the investment of UTILIZATION OF VESIDUAL HEAT IN is little, does not need to account in addition the place, does not increase the resistance of air and gas system, and exhaust gas temperature is adjustable, moves convenient, flexiblely, and expense is low.The pole plate heat exchange area is big, and energy-saving benefit is remarkable.A 100MW fired power generating unit is used UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner, can reduce about 20 ℃ of exhaust gas temperatures, year about 2300t of saving standard coal, and a year economic benefit can reach more than 600,000 yuan.Really accomplish to invest little, the return rate height.
UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner can also heat needs other working medium that heats up, the smoke discharging residual heat that reclaims Industrial Stoves in the production process, so UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner has wide application prospects in thermal power generation and other industry.
Description of drawings
Fig. 1 adopts UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner structural representation of the present invention;
Fig. 2 is a bootstrap system figure of embodiments of the invention.
The present invention is described in further detail below in conjunction with drawings and Examples and operation principle.
The specific embodiment
UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner of the present invention, comprise a plurality of finned tube heat exchange elements that constitute by the metallic anode plate 1 of electric cleaner, the finned tube heat exchange element by the condensate pipe series connection in groups, pass through inlet header 2 between group and the group, outlet header 4 is in parallel, thereby form the pole plate heat exchanger, also be provided with vibrator 3 in the pole plate heat exchanger; Structure as shown in Figure 1.
The metallic anode plate 1 of electric cleaner is welded on the condensate pipe 5, and series connection forms a finned tube heat exchange element in groups.With the parallel connection of a plurality of this finned tube heat exchange element, and be connected with vibrator 3 by inlet header 2 and outlet header 4, just constitute a pole plate heat exchanger.
The condensate water of therrmodynamic system enters the pole plate heat exchanger from inlet header 2, carries out the reflux type heat exchange with flue gas, is flowed out from outlet header 4 by the condensate water after the flue gas heating.Certainly, such pole plate heat exchanger is except having hot-swap feature, and prior function remains the electric precipitation function.Vibrator 3 is used to remove the dust stratification of metallic anode plate among Fig. 1.
The present invention utilizes electric cleaner to have huge metallic anode plate, and just in time is in the afterbody of boiler flue, and therefore having ready conditions is designed to afterheat heat exchanger with it, and making it is electric cleaner, is again the large heat exchanger that utilizes waste heat.Thereby make the environment-friendly function of the existing high-effective dust-removing of electric cleaner, the recycling smoke discharging residual heat is arranged again, the function of energy savings is so be called UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner.
Referring to Fig. 2, Fig. 2 is a specific embodiment of the present invention, and UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner is connected into thermal power plant's therrmodynamic system, can form bootstrap system.
This system comprises low-pressure heater 7, control valve 8,9, the condenser 10 of chimney 13, boiler 15, oxygen-eliminating device 6, three polyphones; Condenser 10 is connected with the low-pressure heater 7 of polyphone by the control valve of installing on pipeline and the pipeline thereof 8, and low-pressure heater 7 is communicated with oxygen-eliminating device 6 by pipeline;
Fig. 2 has explained UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner in dedusting, utilizes the pole plate heat exchanger to realize the recycling principle of boiler exhaust gas waste heat.
Left side part of Fig. 2 is boiler 15, UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner 14 and chimney 13; Right-hand part part is the low pressure heating system of steam turbine, by 4 low-pressure heaters (symbol 7 among the figure) such as № 1, № 2, № 3, № 4, and condenser 10 and oxygen-eliminating device 6 compositions.For the low pressure heating system of different steam turbines, the quantity of low-pressure heater may not be 4, but the numbering of low-pressure heater is since 1, according to the size layout from low to high of the extraction pressure of low-pressure heater.
Comprise above-mentioned UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner 14 in the residual neat recovering system in addition, this UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner 14 is arranged between the outlet flue and chimney 13 of boiler 15 afterbodys; A part of condensate water that the low-pressure heater 7 of contacting in the inlet header 2 of UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner 14 and the therrmodynamic system comes out is passed through pipeline connection, make condensate water and flue gas in the pole plate heat exchanger, carry out the reflux type heat exchange, flowed in the oxygen-eliminating device 6 by the outlet header 4 of the condensate water after the flue gas heating through UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner 14.
Pole plate heat exchanger (among its UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner 14 in Fig. 2) is to be connected into therrmodynamic system like this.The condensate water of coming out from condenser 10 is divided into two-way behind certain low-pressure heater: the one tunnel continues to flow to the higher next stage low-pressure heater of extraction pressure through control valve I (symbol 8 among the figure); Another road flows into the pole plate heat exchanger through control valve II (symbol 9 among the figure), and condensate water is returned therrmodynamic system after heating up with the flue gas adverse current heat exchange therein, flows in the oxygen-eliminating device 6.As required, the place of drawing that enters the condensate water of pole plate heat exchanger can be after any low-pressure heater, also can be simultaneously after many low-pressure heaters.
Obviously, by said system, the smoke discharging residual heat of boiler 15 is constantly taken back therrmodynamic system with waste heat with flowing of condensate water, and is utilized effectively just by the pole plate heat exchanger in the UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner 14.Thereby improve power plant efficient, reduce gross coal consumption rate, reach energy-conservation purpose.Such electric cleaner, existing dedusting function has the function of recycling waste heat again, so claim " UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner ".
Control valve I in the residual neat recovering system and control valve II are used for changing the condensing capacity of UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner 14 of flowing through, and reach the purpose of regulating the control exhaust gas temperature.
Claims (3)
1. UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner, it is characterized in that, it comprises a plurality of finned tube heat exchange elements that are made of the metallic anode plate of electric cleaner, the finned tube heat exchange element by the condensate pipe series connection in groups, group with organize between inlet header and outlet header formation in parallel pole plate heat exchanger by being arranged on UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner two ends, also be provided with vibrator in the pole plate heat exchanger.
2. a residual neat recovering system of using UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner comprises chimney, boiler, oxygen-eliminating device, a plurality of low-pressure heater, organizes control valve, condenser more; Condenser is connected with the low-pressure heater of a plurality of polyphones by pipeline and control valve, and low-pressure heater is communicated with oxygen-eliminating device by pipeline; It is characterized in that:
Comprise the described UTILIZATION OF VESIDUAL HEAT IN formula of claim 1 electric cleaner in this residual neat recovering system in addition, this UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner is arranged between the outlet flue and chimney of boiler; A part of condensate water that the low-pressure heater of contacting in the inlet header of UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner and the residual neat recovering system comes out is passed through pipeline connection, make condensate water and flue gas in the pole plate heat exchanger, carry out the reflux type heat exchange, flowed in the oxygen-eliminating device by the outlet header of the condensate water after the flue gas heating through UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner.
3. residual neat recovering system as claimed in claim 2 is characterized in that, enter UTILIZATION OF VESIDUAL HEAT IN formula electric cleaner condensate water draw the place after any low-pressure heater, or simultaneously after many low-pressure heaters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100733494A CN100408192C (en) | 2004-12-06 | 2004-12-06 | Residual-heat used type electric dust separator and its application system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100733494A CN100408192C (en) | 2004-12-06 | 2004-12-06 | Residual-heat used type electric dust separator and its application system |
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| Publication Number | Publication Date |
|---|---|
| CN1623673A CN1623673A (en) | 2005-06-08 |
| CN100408192C true CN100408192C (en) | 2008-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100733494A Expired - Fee Related CN100408192C (en) | 2004-12-06 | 2004-12-06 | Residual-heat used type electric dust separator and its application system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128445B (en) * | 2010-01-15 | 2012-10-10 | 华北电力科学研究院有限责任公司 | Method, device and system for recycling moisture and latent heat of vaporization in lignite smoke |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103406200A (en) * | 2013-08-21 | 2013-11-27 | 山东大学 | Electrostatic dust collector with built-in heat exchange anode |
| CN105057099B (en) * | 2015-07-31 | 2017-07-11 | 湖州杨氏塑料助剂有限公司 | Produce MBS exhaust gas processing device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1005079B (en) * | 1986-08-14 | 1989-08-30 | 西安交通大学 | Composite system of low pressure energy saver utilizing waste heat inthe exhausted smoke |
| CN2200482Y (en) * | 1994-07-26 | 1995-06-14 | 路广义 | Electrostatic precipitator |
| CN1047435C (en) * | 1994-12-29 | 1999-12-15 | 西安交通大学 | Utilization system of exhausted smoke waste heat in steam heat-recovering dynamic circulation |
-
2004
- 2004-12-06 CN CNB2004100733494A patent/CN100408192C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1005079B (en) * | 1986-08-14 | 1989-08-30 | 西安交通大学 | Composite system of low pressure energy saver utilizing waste heat inthe exhausted smoke |
| CN2200482Y (en) * | 1994-07-26 | 1995-06-14 | 路广义 | Electrostatic precipitator |
| CN1047435C (en) * | 1994-12-29 | 1999-12-15 | 西安交通大学 | Utilization system of exhausted smoke waste heat in steam heat-recovering dynamic circulation |
Non-Patent Citations (2)
| Title |
|---|
| 锅炉排烟余热利用技术. 陈国慧，林万超.节能技术，第5期. 1992 |
| 锅炉排烟余热利用技术. 陈国慧，林万超.节能技术，第5期. 1992 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128445B (en) * | 2010-01-15 | 2012-10-10 | 华北电力科学研究院有限责任公司 | Method, device and system for recycling moisture and latent heat of vaporization in lignite smoke |
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| Publication number | Publication date |
|---|---|
| CN1623673A (en) | 2005-06-08 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shaanxi Datang New Power Electric Investment Company Assignor: Xi'an Jiaotong University Contract record no.: 2011610000178 Denomination of invention: Residual-heat used type electric dust separator and its application system Granted publication date: 20080806 License type: Exclusive License Open date: 20050608 Record date: 20110915 |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080806 Termination date: 20131206 |