CN204665323U - A kind of based on water reclamation system in the flue gas of teflon heat exchanger - Google Patents
A kind of based on water reclamation system in the flue gas of teflon heat exchanger Download PDFInfo
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- CN204665323U CN204665323U CN201520264048.3U CN201520264048U CN204665323U CN 204665323 U CN204665323 U CN 204665323U CN 201520264048 U CN201520264048 U CN 201520264048U CN 204665323 U CN204665323 U CN 204665323U
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- water
- heat exchanger
- flue gas
- teflon
- heat medium
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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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 relates to a kind of based on water reclamation system in the flue gas of teflon heat exchanger.Also there is no a kind of system that effectively can realize Water Sproading in flue gas at present.The utility model comprises the air preheater be arranged on successively along flow of flue gas direction on flue, deduster, air-introduced machine, desulfurizing tower and chimney, be characterized in: also comprise teflon heat exchanger, condensate recovery device, flue gas temperature measurer, heat medium water return pipe, heat medium water water inlet pipe, electric control valve, water circulating pump, replenishing water tank of water and waste heat use equipment, teflon heat exchanger is arranged on the flue between desulfurizing tower and chimney, condensate recovery device and teflon heat exchanger are fixed, flue gas temperature measurer be arranged on be positioned at teflon heat exchanger exit flue on, one end of heat medium water return pipe is connected in the heat medium water outlet of teflon heat exchanger, the other end of this heat medium water return pipe is connected on waste heat use equipment.Reasonable in design of the present utility model, can water effectively in recovered flue gas.
Description
Technical field
The utility model relates to water reclamation system in a kind of flue gas, especially relates to a kind of based on water reclamation system in the flue gas of teflon heat exchanger, is mainly used in thermal power plant.
Background technology
The thermal power plant fume afterheat amount of carrying of discharging fume is huge, and water content is high in flue gas, especially the unit of brown coal is used, exhaust gas temperature is at about 150 DEG C, volumetric(al) moisture content in flue gas is then about 15%, therefore exhaust gas temperature is reduced to below water dew point, and the steam in flue gas is condensed, and condensate liquid is recycled, this resource distribution quagmire of rich coal lack of water of especially northern power plant of solution China is significant.In addition, in the process of flue gas condensing, gas component is condensed, and liquid reacts, absorption, makes SO in smoke evacuation
2, NO
x, the concentration of narmful substance such as Hg effectively reduced, therefore realize the Water Sproading in flue gas, built environment friendly, conservation-minded society be significant.
For water reclamation technology in flue gas, those skilled in the art has done a large amount of work sutdies, if publication date is on December 05th, 2012, publication number is in the Chinese patent of CN202577451U, disclose hydrone capturing device in a kind of flue gas, this device can from the flue gas after dedusting, desulfurization trapping moisture, and by its condensation, reclaim again utilize, the rate of water make-up of minimizing system, saving water resource.But can this technology adopts embrane method water trapping technique, easily occur the problem of gyrpseous scale, adapt to the changeable service condition of coal quantity and also need further research, and its operation maintenance and initial investment are costly.According to metallic recuperator, condensation, recycling are carried out to the steam in flue gas, then cannot avoid the cold end corrosion of heat exchanger, the series of problems such as cause heat exchanger to need periodic maintenance, service life limited.
In sum, also do not have a kind of reasonable in design at present, design is unique, effectively can realize the system of Water Sproading in flue gas.
Utility model content
The purpose of this utility model is to overcome above shortcomings in prior art, and provides a kind of reasonable in design, and design is unique, can effectively realize Water Sproading function in flue gas based on water reclamation system in the flue gas of teflon heat exchanger.
The technical scheme in the invention for solving the above technical problem is: should comprise based on water reclamation system in the flue gas of teflon heat exchanger the air preheater be arranged on successively along flow of flue gas direction on flue, deduster, air-introduced machine, desulfurizing tower and chimney, its design feature is: also comprise teflon heat exchanger, condensate recovery device, flue gas temperature measurer, heat medium water return pipe, heat medium water water inlet pipe, electric control valve, water circulating pump, replenishing water tank of water and waste heat use equipment, described teflon heat exchanger is arranged on the flue between desulfurizing tower and chimney, described condensate recovery device and teflon heat exchanger are fixed, described flue gas temperature measurer be arranged on be positioned at teflon heat exchanger exit flue on, one end of described heat medium water return pipe is connected in the heat medium water outlet of teflon heat exchanger, the other end of this heat medium water return pipe is connected on waste heat use equipment, one end of described heat medium water water inlet pipe is connected in the heat medium water import of teflon heat exchanger, the other end of this heat medium water water inlet pipe is connected on waste heat use equipment, described electric control valve, water circulating pump and replenishing water tank of water are installed on heat medium water water inlet pipe, this electric control valve, water circulating pump and replenishing water tank of water are arranged in order along one end of heat medium water water inlet pipe to the direction of the other end.
As preferably, the utility model also comprises terminal control unit, and described terminal control unit is connected on flue gas temperature measurer and electric control valve by wire.
As preferably, condensate recovery device described in the utility model is fixed on the bottom of teflon heat exchanger.
As preferably, teflon heat exchanger described in the utility model is modular assembly structure.
The utility model compared with prior art, have the following advantages and effect: in flue gas, the structure of water reclamation system is simple, design is unique, adopt teflon heat exchanger as the cooler of water reclamation system in flue gas, reduce below flue-gas temperature to water dew point, there is not cold end corrosion, dust stratification problem in teflon heat exchanger, the service life of teflon heat exchanger is more than 15 years; Teflon heat exchanger is modular assembly in addition, and teflon heat exchanger installing engineering amount is little, easy to maintenance.The utility model technology is adopted to avoid the operation and maintenance cost that in existing flue gas, water reclamation system exists high, and the problem such as initial investment is large, effectively can realize the Water Sproading in flue gas; Meanwhile, along with the condensation of steam in flue gas, SO
2, NO
x, the material such as Hg is condensed liquid absorption, reaction, effectively reduces SO
2, NO
x, the harmful substance such as Hg discharge, environmental benefit is remarkable.
Accompanying drawing explanation
Fig. 1 is the structural representation based on water reclamation system in the flue gas of teflon heat exchanger in the utility model embodiment.
In figure: 1-air preheater, 2-deduster, 3-air-introduced machine, 4-desulfurizing tower, 5-teflon heat exchanger, 6-condensate recovery device, 7-chimney, 8-flue gas temperature measurer, 9-heat medium water return pipe, 10-heat medium water water inlet pipe, 11-terminal control unit, 12-electric control valve, 13-water circulating pump, 14-replenishing water tank of water, 15-waste heat uses equipment.
Detailed description of the invention
Below in conjunction with accompanying drawing, also by embodiment, the utility model is described in further detail, and following examples are that the utility model is not limited to following examples to explanation of the present utility model.
Embodiment.
See Fig. 1, air preheater 1 is comprised based on water reclamation system in the flue gas of teflon heat exchanger in the present embodiment, deduster 2, air-introduced machine 3, desulfurizing tower 4, teflon heat exchanger 5, condensate recovery device 6, chimney 7, flue gas temperature measurer 8, heat medium water return pipe 9, heat medium water water inlet pipe 10, terminal control unit 11, electric control valve 12, water circulating pump 13, replenishing water tank of water 14 and waste heat use equipment 15, air preheater 1, deduster 2, air-introduced machine 3, desulfurizing tower 4, teflon heat exchanger 5 and chimney 7 are arranged on flue successively along flow of flue gas direction, namely teflon heat exchanger 5 is arranged on the flue between desulfurizing tower 4 and chimney 7.The present embodiment adopts teflon heat exchanger 5 as gas cooler, and teflon heat exchanger 5 is generally modular assembly structure, and installing engineering amount is little, and maintenance is convenient.
Condensate recovery device 6 in the present embodiment and teflon heat exchanger 5 are fixed, and this condensate recovery device 6 is fixed on the bottom of teflon heat exchanger 5 usually.Flue gas temperature measurer 8 be arranged on be positioned at teflon heat exchanger 5 exit flue on, for monitoring the flue-gas temperature of teflon heat exchanger 5 afterbody.One end of heat medium water return pipe 9 is connected in the heat medium water outlet of teflon heat exchanger 5, and the other end of this heat medium water return pipe 9 is connected to waste heat and uses on equipment 15.
In the present embodiment, one end of heat medium water water inlet pipe 10 is connected in the heat medium water import of teflon heat exchanger 5, the other end of this heat medium water water inlet pipe 10 is connected to waste heat and uses on equipment 15, electric control valve 12, water circulating pump 13 and replenishing water tank of water 14 are installed on heat medium water water inlet pipe 10, and this electric control valve 12, water circulating pump 13 and replenishing water tank of water 14 are arranged in order along one end of heat medium water water inlet pipe 10 to the direction of the other end.Terminal control unit 11 is connected on flue gas temperature measurer 8 and electric control valve 12 by wire.
As follows based on the step of water recovery method in the flue gas of teflon heat exchanger in the present embodiment: flue gas flows through air preheater 1, deduster 2, air-introduced machine 3, desulfurizing tower 4, teflon heat exchanger 5 and chimney 7 successively along flue, when flue gas flows through teflon heat exchanger 5, heat medium water in flue gas teflon heat exchanger 5 produces high temperature heat medium water, flue-gas temperature is reduced to below water dew point, steam condensation in flue gas produces condensate liquid, condensate liquid is collected by condensate recovery device 6, along with the condensation of steam in flue gas, SO contained in flue gas
2, NO
xbeing condensed with Hg, liquid adsorbs, reaction; Heat medium water absorbs flue gas heat and produces high temperature heat medium water, and high temperature heat medium water enters waste heat through heat medium water return pipe 9 and uses equipment 15, uses in equipment 15 and produces heat medium water after heat release, get back to teflon heat exchanger 5 through heat medium water water inlet pipe 10 at waste heat; When the flue-gas temperature in teflon heat exchanger 5 exit is not reduced to below water dew point, by flue gas temperature measurer 8 by the signal feedback that detects to terminal control unit 11, the aperture of the electric control valve 12 on heat medium water water inlet pipe 10 is regulated by terminal control unit 11, to increase the discharge of heat medium water, ensure that the flue-gas temperature of teflon heat exchanger 5 afterbody is reduced to below water dew point.
Teflon heat exchanger 5 in the present embodiment is arranged in the flue before desulfurizing tower 4 after funnel 7, flue gas after desulfurizing tower 4 is by the heat medium water water cooling in teflon heat exchanger 5, temperature is reduced to below water dew point, steam in flue gas condenses into condensate liquid and the liquid retracting device 6 that is condensed is collected, and in flue gas, incoagulable composition then enters air by chimney 7.Teflon heat exchanger 5 uses equipment 15 to be connected by heat medium water water inlet pipe 10, heat medium water return pipe 9 with waste heat, after heat medium water in teflon heat exchanger 5 absorbs the heat of flue gas, enter waste heat through heat medium water return pipe 9 and use equipment 15, use in equipment 15 at waste heat and get back to teflon heat exchanger 5 by heat medium water water inlet pipe 10 after heat release, so circulate; Teflon heat exchanger 5 back-end ductwork is equipped with flue gas temperature measurer 8, for monitoring the flue-gas temperature of teflon heat exchanger 5 afterbody.Electric control valve 12, water circulating pump 13 and replenishing water tank of water 14 heat medium water water inlet pipe 10 be equipped with, replenishing water tank of water 14 is for storing heat medium water and to the heat medium water moisturizing flowing through teflon heat exchanger 5, ensure the heat medium water water yield in teflon heat exchanger 5, guarantee that teflon heat exchanger 5 exports cigarette temperature drop and is low to moderate below aqueous dew point temperature.
In addition, it should be noted that, the specific embodiment described in this description, the shape, institute's title of being named etc. of its parts and components can be different, and the above content described in this description is only to the explanation of the utility model structure example.The equivalence change that structure, feature and principle described in all foundation the utility model inventional idea are done or simple change, be included in the protection domain of the utility model patent.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment; only otherwise depart from structure of the present utility model or surmount this scope as defined in the claims, protection domain of the present utility model all should be belonged to.
Claims (4)
1., based on a water reclamation system in the flue gas of teflon heat exchanger, comprise the air preheater be arranged on successively along flow of flue gas direction on flue, deduster, air-introduced machine, desulfurizing tower and chimney, is characterized in that: also comprise teflon heat exchanger, condensate recovery device, flue gas temperature measurer, heat medium water return pipe, heat medium water water inlet pipe, electric control valve, water circulating pump, replenishing water tank of water and waste heat use equipment, described teflon heat exchanger is arranged on the flue between desulfurizing tower and chimney, described condensate recovery device and teflon heat exchanger are fixed, described flue gas temperature measurer be arranged on be positioned at teflon heat exchanger exit flue on, one end of described heat medium water return pipe is connected in the heat medium water outlet of teflon heat exchanger, the other end of this heat medium water return pipe is connected on waste heat use equipment, one end of described heat medium water water inlet pipe is connected in the heat medium water import of teflon heat exchanger, the other end of this heat medium water water inlet pipe is connected on waste heat use equipment, described electric control valve, water circulating pump and replenishing water tank of water are installed on heat medium water water inlet pipe, this electric control valve, water circulating pump and replenishing water tank of water are arranged in order along one end of heat medium water water inlet pipe to the direction of the other end.
2. according to claim 1ly it is characterized in that: also comprise terminal control unit based on water reclamation system in the flue gas of teflon heat exchanger, described terminal control unit is connected on flue gas temperature measurer and electric control valve by wire.
3. according to claim 1 based on water reclamation system in the flue gas of teflon heat exchanger, it is characterized in that: described condensate recovery device is fixed on the bottom of teflon heat exchanger.
4. according to claim 1 based on water reclamation system in the flue gas of teflon heat exchanger, it is characterized in that: described teflon heat exchanger is modular assembly structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520264048.3U CN204665323U (en) | 2015-04-28 | 2015-04-28 | A kind of based on water reclamation system in the flue gas of teflon heat exchanger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520264048.3U CN204665323U (en) | 2015-04-28 | 2015-04-28 | A kind of based on water reclamation system in the flue gas of teflon heat exchanger |
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| CN204665323U true CN204665323U (en) | 2015-09-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832939A (en) * | 2015-04-28 | 2015-08-12 | 杭州华电能源工程有限公司 | System and method for recovering water of smoke based on fluorine plastic heat exchanger |
| CN106678771A (en) * | 2016-08-05 | 2017-05-17 | 杭州华电能源工程有限公司 | Air heater and low-low temperature economizer coupled energy-saving and environmental-friendly integrated system and method based on fluoroplastic heat exchanger |
-
2015
- 2015-04-28 CN CN201520264048.3U patent/CN204665323U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832939A (en) * | 2015-04-28 | 2015-08-12 | 杭州华电能源工程有限公司 | System and method for recovering water of smoke based on fluorine plastic heat exchanger |
| CN106678771A (en) * | 2016-08-05 | 2017-05-17 | 杭州华电能源工程有限公司 | Air heater and low-low temperature economizer coupled energy-saving and environmental-friendly integrated system and method based on fluoroplastic heat exchanger |
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