CN205076834U - Thermal power factory utilizes sewage treatment system of flue gas waste heat - Google Patents
Thermal power factory utilizes sewage treatment system of flue gas waste heat Download PDFInfo
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- CN205076834U CN205076834U CN201520441970.5U CN201520441970U CN205076834U CN 205076834 U CN205076834 U CN 205076834U CN 201520441970 U CN201520441970 U CN 201520441970U CN 205076834 U CN205076834 U CN 205076834U
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/138—Water desalination using renewable energy
- Y02A20/141—Wind power
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Abstract
The utility model discloses a thermal power factory utilizes sewage treatment system of flue gas waste heat, characterized by, the system includes: between the draught fan (or booster fan) and desulfurizing tower of thermal power factory, add gas - gas heat exchanger (11) (21) for carry out the heat transfer of flue gas and cold air, the cold air is gone into by cold wind air -blower (12) drum, and cold wind air -blower (12) export connects to low temperature medium inlet (13) of first order heat exchanger (11), dividing two the tunnel after the low temperature medium of first order heat exchanger (11) export (15) is drawn, connecing all the way to boiler blower, another way connects to air heater (22) again, again air heater (22) export connect to low temperature medium inlet (23) of second level heat exchanger (21), connect after the low temperature medium of second level heat exchanger (21) export (25) is drawn to effluent disposal system's the female pipe of heating (34), connect to aerated conduit (32) of waste water aeration tank (31) bottom via first branch pipeline (33), carry out the aeration evaporation to waste water. Adopt the utility model discloses a system, the dump energy of partial flue gas has been retrieved to the one side to handle power plant's waste water through one of them part dump energy. On the other hand has reduced the flue -gas temperature of desulfurizing tower entry, reduced the inside evaporation of desulfurizing tower, has improved the phenomenon that the power plant chimney emits white cigarette. In addition, can also pass through boiler blower with partial waste heat retrieves to the thermodynamic system of boiler.
Description
Technical field
The utility model technology relates to desulfurization system for thermal power plant and Waste Water Treatment, belongs to energy-conserving and environment-protective field, fuel-burning power plant.
Background technology
Along with national economic development, increasing of industrial enterprise's quantity, very important condition has been arrived in the process of various types of pollutent and waste, and the environmental protection standard of country is also more and more stricter." fossil-fuel power plant atmospheric pollutant emission standard " issued along with in July, 2011 started to perform in July, 2014, and the appearance of promulgated by the State Council (2015) No. 17 files " water prevention and cure of pollution action plan ", and the environmental protection pressure in fuel-burning power plant is increasing.
In the last few years, built fuel-burning power plant all spends a large amount of manpower, material resources and financial resources, to reach the requirement discharge index of new edition " fossil-fuel power plant atmospheric pollutant emission standard " in the discharge controlling atmospheric polluting material.And the improvement of water pollutions is brought into schedule along with country, corresponding green technology is also badly in need of in each fuel-burning power plant, while effective process waste water of heat-engine plant, reduces investment and operation cost.
The utility model is based on fired power generating unit environmental protection parameter general at present, the waste heat made full use of contained by flue gas carries out evaporation process and heat recuperation to full factory waste water, solid substance in waste water is separated with water, reach the object of wastewater zero discharge, to compare system with the method for chemical treatment waste water more simple with traditional machinery carrying out prefiltration and agent-feeding treatment to waste water, and do not have new pollutent to add.Meanwhile, along with the reduction of flue-gas temperature entering thionizer, also the evaporative effect in thionizer will be reduced, the humidity of emissions reduction flue gas, and then reduce more small deleterious particle thing discharge, save power plant water, and improve the Working environment of chimney, effectively solve part chimney of electric plant " Mao Baiyan " phenomenon.Finally, also heated the freezing air that a part enters boiler fan, reclaim heat further, and effectively reduce boiler air preheater cold junction coagulum in the winter time to the corrosion of air preheater.
Utility model content
The utility model is by the boiler induced-draft fan in power plant boiler tail flue gas treatment system or the flue between booster fan and fume desulfurizing tower increase interchanger, waste heat in flue gas is used for adding warm air, and this part is sent in Waste Water Treatment, with the waste water being gone to bubbling heating evaporation power plant by the warm air after flue gas heating by the part in the air that heats.In addition, remaining warm air can also send to boiler fan entrance.
According to an aspect of the present utility model, provide a kind of fuel-burning power plant to utilize the Sewage treatment systems of fume afterheat, described system comprises:
Flue gas waste heat recovery system;
Waste Water Treatment;
According to an embodiment of the present utility model, described flue gas waste heat recovery system comprises: first step interchanger (11) and/or second stage interchanger (21).When system has above-mentioned two kinds of devices simultaneously, according to the flow direction of flue gas, first step interchanger (11) is positioned at the downstream of second stage interchanger (21).
According to another embodiment of the present utility model, also only first-class heat exchanger can be set, if only arrange first-class heat exchanger, then calorifier (22) outlet can directly be received on second stage interchanger second-phase pass connecting tube (28) again, cancels the cryogenic media entrance (23) of second stage interchanger, heat exchanging pipe (24), cryogenic media outlet (25), second stage interchanger first-phase pass connecting tube (26) and liquid header (27).
According to another embodiment of the present utility model, first step interchanger (11) comprising: cold blower (12), cryogenic media entrance (13), heat exchanging pipe (14), cryogenic media outlet (15), first step interchanger first-phase closes connecting tube (16), first step interchanger second-phase closes connecting tube (18), first step interchanger third phase closes connecting tube (19) and liquid header (17), freezing air is connected as the entrance of cryogenic media with cold blower (12), the outlet of cold blower (12) is closed connecting tube (16) by first step interchanger first-phase and is connected with the cryogenic media entrance (13) of first step interchanger (11), cryogenic media entrance (13) exports (15) through heat exchanging pipe (14) with cryogenic media and is connected, two-way is divided into after cryogenic media outlet (15) draws female pipe, first step interchanger second-phase of leading up to closes connecting tube (18) and is connected to boiler fan, first step interchanger third phase of separately leading up to closes calorifier again (22) entrance that connecting tube (19) is connected to second stage interchanger (21), bottom the fume side of first step interchanger (11), liquid header (17) is set, liquid header (17) is connected with power plant original thionizer.
According to another embodiment of the present utility model, second stage interchanger (21) comprising: calorifier (22) again, cryogenic media entrance (23), heat exchanging pipe (24), cryogenic media outlet (25), second stage interchanger first-phase closes connecting tube (26), second stage interchanger second-phase closes connecting tube (28) and liquid header (27), the entrance of calorifier (22) closes connecting tube (19) by first step interchanger third phase and exports (15) with the cryogenic media of first step interchanger (11) and be connected again, the outlet of calorifier (22) is connected with the cryogenic media entrance (23) of second stage interchanger (21) by second stage interchanger first-phase pass connecting tube (26) again, cryogenic media entrance (23) exports (25) through heat exchanging pipe (24) with cryogenic media and is connected, cryogenic media outlet (25) closes by the second stage interchanger second-phase heating mother's pipe (34) that connecting tube (28) is connected to Waste Water Treatment after drawing, bottom the fume side of second stage interchanger (21), liquid header (27) is set, liquid header is connected with power plant original thionizer.
According to another embodiment of the present utility model, Waste Water Treatment comprises aerating wastewater pond (31), aerated conduit (32), first branch line (33), second branch line (35) and the female pipe (34) of heating, Waste Water Treatment is introduced by the warm air heated via the female pipe (34) of heating in flue gas waste heat recovery system, and the aerated conduit (32) of bottom, aerating wastewater pond (31) is introduced via the first branch line (33), warm air in the female pipe (34) of heating can also be introduced in the aeration tank of other Waste Water Treatments via the second branch line (35).
According to another embodiment of the present utility model, cold blower (12) in first step interchanger (11) can be one, also can be multiple stage for subsequent use each other, the calorifier again (22) in second stage interchanger (21) can be one, also can be multiple stage for subsequent use each other.
According to another embodiment of the present utility model, described flue gas waste heat recovery system can be gas-gas direct heat exchanger, also can be using water or metal as the interchanger of intermediate medium.
According to another embodiment of the present utility model, the aerating wastewater pond (31) in Waste Water Treatment can be open architecture, also by enclosed construction, top steam can be drawn recycling.
According to another embodiment of the present utility model, Waste Water Treatment can be one or more sets, during for overlapping more, and can collaborative work between many covers.
Accompanying drawing explanation
A kind of structural representation utilizing an embodiment of the Sewage treatment systems of fume afterheat provided according to the utility model is provided.
Embodiment
With reference to figure 1, Figure 1 shows that a kind of concrete embodiment of the present utility model.Two-stage gas-to-gas heat exchanger set up by flue (01) between the induced draft fan (or booster fan) and thionizer of original flue gas system (is flue gas-air direct heat exchanger in the embodiment shown in Fig. 1, also can be the gas-to-gas heat exchanger that is intermediate medium with metal or water etc. in practical application), be respectively first step interchanger (11) and second stage interchanger (21).Cryogenic media (freezing air) is blasted the cryogenic media entrance (13) of first step interchanger (11) by the cold blower (12) of first step interchanger, freezing air carries out heat exchange with high-temperature medium (flue gas) in heat exchanging pipe (14), freezing air becomes warm air after first step interchanger (11) heats up, two-way is divided into after cryogenic media outlet (15) is discharged, a part is directed to the entrance of boiler fan, and another part is directed to second stage interchanger (21).
After warm air enters second stage interchanger (21), first enter again calorifier (22) entrance.This part warm air is after calorifier (22) supercharging again, the heat exchanging pipe (24) being admitted to second stage interchanger (21) continues and high-temperature medium (flue gas) heat exchange, warm air becomes warm air after second stage interchanger (21) heats up, after cryogenic media outlet (25) is discharged, be introduced into Waste Water Treatment.
After warm air enters Waste Water Treatment, first enter the female pipe (34) of heating, and be dispensed to each aerated conduit (32) by the first branch line (33).Warm air overflows from the aperture aerated conduit (32), and aeration in aerating wastewater pond (31) heated waste water make moisture evaporation wherein, and solids precipitates.
It should be noted that, Waste Water Treatment can be multiple, collaborative work mutually.
Bottom the fume side of gas-to-gas heat exchanger, be furnished with liquid header (17) (27) for collecting the acid-bearing wastewater of fume gas condensation, this part waste water is sent to thionizer.
In addition, range of application of the present utility model is not limited to the technique of the specific embodiment described in specification sheets, mechanism, manufacture, material composition, means, method and step.From disclosure of the present utility model, to easily understand as those of ordinary skill in the art, for the technique existed at present or be about to develop, mechanism, manufacture, material composition, means, method or step later, wherein their perform the identical function of the corresponding embodiment cardinal principle that describes with the utility model or obtain the identical result of cardinal principle, can apply according to the utility model to them.Therefore, the utility model claims are intended to these technique, mechanism, manufacture, material composition, means, method or step to be included in its protection domain.
Claims (8)
1. a fuel-burning power plant utilizes the Sewage treatment systems of fume afterheat, described system comprises: flue gas waste heat recovery system and Waste Water Treatment, wherein, flue gas waste heat recovery system is on boiler induced-draft fan or the flue between booster fan and fume desulfurizing tower (01), and flue gas waste heat recovery system comprises: first step interchanger (11) and/or second stage interchanger (21); Waste Water Treatment comprises the female pipe (34) of aerating wastewater pond (31), aerated conduit (32), the first branch line (33), the second branch line (35) and heating, Waste Water Treatment is introduced by the warm air heated via the female pipe (34) of heating in flue gas waste heat recovery system, and the aerated conduit (32) of bottom, aerating wastewater pond (31) is introduced via the first branch line (33), the warm air in the female pipe (34) of heating can also be introduced in the aeration tank of other Waste Water Treatments via the second branch line (35).
2. system according to claim 1, it is characterized in that, according to the flow direction of flue gas, first step interchanger (11) is positioned at the downstream of second stage interchanger (21), if only arrange first-class heat exchanger, then calorifier (22) outlet can directly be received on second stage interchanger second-phase pass connecting tube (28) again, cancels the cryogenic media entrance (23) of second stage interchanger, heat exchanging pipe (24), cryogenic media outlet (25), second stage interchanger first-phase pass connecting tube (26) and liquid header (27).
3. system according to claim 1, it is characterized in that, first step interchanger (11) comprising: cold blower (12), cryogenic media entrance (13), heat exchanging pipe (14), cryogenic media outlet (15), first step interchanger first-phase closes connecting tube (16), first step interchanger second-phase closes connecting tube (18), first step interchanger third phase closes connecting tube (19) and liquid header (17), freezing air is connected as the entrance of cryogenic media with cold blower (12), the outlet of cold blower (12) is closed connecting tube (16) by first step interchanger first-phase and is connected with the cryogenic media entrance (13) of first step interchanger (11), cryogenic media entrance (13) exports (15) through heat exchanging pipe (14) with cryogenic media and is connected, two-way is divided into after cryogenic media outlet (15) draws female pipe, first step interchanger second-phase of leading up to closes connecting tube (18) and is connected to boiler fan, first step interchanger third phase of separately leading up to closes calorifier again (22) entrance that connecting tube (19) is connected to second stage interchanger (21), bottom the fume side of first step interchanger (11), liquid header (17) is set, liquid header (17) is connected with power plant original thionizer.
4. system according to claim 1, it is characterized in that, second stage interchanger (21) comprising: calorifier (22) again, cryogenic media entrance (23), heat exchanging pipe (24), cryogenic media outlet (25), second stage interchanger first-phase closes connecting tube (26), second stage interchanger second-phase closes connecting tube (28) and liquid header (27), the entrance of calorifier (22) closes connecting tube (19) by first step interchanger third phase and exports (15) with the cryogenic media of first step interchanger (11) and be connected again, the outlet of calorifier (22) is connected with the cryogenic media entrance (23) of second stage interchanger (21) by second stage interchanger first-phase pass connecting tube (26) again, cryogenic media entrance (23) exports (25) through heat exchanging pipe (24) with cryogenic media and is connected, cryogenic media outlet (25) closes by the second stage interchanger second-phase heating mother's pipe (34) that connecting tube (28) is connected to Waste Water Treatment after drawing, bottom the fume side of second stage interchanger (21), liquid header (27) is set, liquid header is connected with power plant original thionizer.
5. system according to claim 2, it is characterized in that, the cold blower (12) in first step interchanger (11) can be one, also can be multiple stage for subsequent use each other, calorifier again (22) in second stage interchanger (21) can be one, also can be multiple stage for subsequent use each other.
6. system according to claim 1, is characterized in that, described flue gas waste heat recovery system can be gas-gas direct heat exchanger, also can be using water or metal as the interchanger of intermediate medium.
7. system according to claim 1, is characterized in that, the aerating wastewater pond (31) in Waste Water Treatment can be open architecture, also by enclosed construction, top steam can be drawn recycling.
8. system according to claim 1, is characterized in that, Waste Water Treatment can be one or more sets, during for overlapping more, and can collaborative work between many covers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520441970.5U CN205076834U (en) | 2015-06-25 | 2015-06-25 | Thermal power factory utilizes sewage treatment system of flue gas waste heat |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520441970.5U CN205076834U (en) | 2015-06-25 | 2015-06-25 | Thermal power factory utilizes sewage treatment system of flue gas waste heat |
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| CN205076834U true CN205076834U (en) | 2016-03-09 |
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| CN201520441970.5U Active CN205076834U (en) | 2015-06-25 | 2015-06-25 | Thermal power factory utilizes sewage treatment system of flue gas waste heat |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108722164A (en) * | 2018-06-04 | 2018-11-02 | 浙江奇彩环境科技股份有限公司 | Zero-emission waste gas treatment process for thermal power plant |
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2015
- 2015-06-25 CN CN201520441970.5U patent/CN205076834U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108722164A (en) * | 2018-06-04 | 2018-11-02 | 浙江奇彩环境科技股份有限公司 | Zero-emission waste gas treatment process for thermal power plant |
| CN108722164B (en) * | 2018-06-04 | 2020-06-26 | 浙江奇彩环境科技股份有限公司 | Zero-emission waste gas treatment process for thermal power plant |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |