CN110822463A - Flue gas that condensation was reheated disappears white system - Google Patents
Flue gas that condensation was reheated disappears white system Download PDFInfo
- Publication number
- CN110822463A CN110822463A CN201810906907.2A CN201810906907A CN110822463A CN 110822463 A CN110822463 A CN 110822463A CN 201810906907 A CN201810906907 A CN 201810906907A CN 110822463 A CN110822463 A CN 110822463A
- Authority
- CN
- China
- Prior art keywords
- flue gas
- cooler
- reheater
- water
- condenser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 59
- 239000003546 flue gas Substances 0.000 title claims abstract description 56
- 230000005494 condensation Effects 0.000 title claims abstract description 9
- 238000009833 condensation Methods 0.000 title claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 11
- 238000003303 reheating Methods 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 238000011084 recovery Methods 0.000 claims abstract description 10
- 239000000428 dust Substances 0.000 claims abstract description 9
- 230000002087 whitening effect Effects 0.000 claims abstract description 8
- 238000000926 separation method Methods 0.000 claims abstract description 7
- 238000007599 discharging Methods 0.000 claims abstract description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 7
- 239000002826 coolant Substances 0.000 claims description 4
- 239000000779 smoke Substances 0.000 abstract description 14
- 230000008030 elimination Effects 0.000 abstract description 6
- 238000003379 elimination reaction Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/08—Arrangements of devices for treating smoke or fumes of heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
-
- 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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Treating Waste Gases (AREA)
- Chimneys And Flues (AREA)
Abstract
The invention provides a flue gas whitening system for condensation reheating, which comprises an air preheater, a dust remover, a draught fan, a cooler, a desulfurizing tower, a condenser, a reheater and a chimney; the condenser comprises a circulating water cooling unit, a steam-water separation unit and a condensed water recovery unit and is connected with a unique cold source; the flue gas sequentially passes through an air preheater, a dust remover, a draught fan, a cooler, a desulfurizing tower, a condenser, a reheater and a chimney; the flue gas is cooled in a cooler, the temperature of the flue gas is further cooled and dehumidified in a condenser, then the flue gas is heated by a reheater and then sent to a chimney for discharging, and the reheater receives heat collected by the cooler. The smoke white elimination system is reasonable in arrangement and suitable for multiple industries; the energy-saving and environment-friendly smoke reheating device can achieve the aim of white smoke elimination without external heat source investment in the smoke reheating process.
Description
Technical Field
The invention belongs to the technical field of flue gas treatment, and particularly relates to a flue gas whitening system for condensation reheating.
Background
The existing technology for eliminating the white smoke is to reduce the temperature of the smoke through cooling, remove a large amount of moisture from the smoke and achieve the aim of removing the white smoke. The defect that the whitening effect can only play a certain role and cannot achieve the effect of visual whitening elimination, and a large amount of cold sources are needed for heat exchange in the cooling process, so that a large amount of heat sources are lost, and a large amount of heat loss is caused.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a smoke whitening system for condensation reheating. The invention adopts a mode of firstly condensing and then heating, and mainly heats the condensed unsaturated flue gas by the heat of the high-temperature flue gas through the heat absorbed by the heat exchanger, condenses the saturated wet flue gas at a lower temperature, separates out most of moisture and pollutants in the flue gas, and heats the condensed low-temperature flue gas to change the original saturated flue gas into the unsaturated flue gas, so that the condensation phenomenon is not generated during smoke exhaust even under the condition of lower atmospheric temperature, and meanwhile, the plateau system can be improved to save water and electricity, the stability of the original system is improved, the high-efficiency operation of the system is realized, and the energy consumption is reduced.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a condensation reheating flue gas white elimination system comprises an air preheater, a dust remover, a draught fan, a cooler, a desulfurizing tower, a condenser, a reheater and a chimney; the flue gas passes through an air preheater, a dust remover, a draught fan, a cooler, a desulfurizing tower, a condenser, a reheater and a chimney in turn, wherein,
the cooler cools the flue gas, a cooling medium in the cooler is heated, high-temperature heat of the flue gas is collected, and the temperature of the flue gas is reduced;
the condenser is connected with a cold source and is used for cooling and dehumidifying the saturated wet flue gas from the desulfurizing tower, removing a part of water vapor in the flue gas and forming saturated wet flue gas with lower temperature; the condenser comprises a circulating water cooling unit, a steam-water separation unit and a condensate water recovery unit, wet flue gas is cooled and condensed to obtain water, water vapor is separated out through the steam-water separation unit in the form of condensate water, the lower-temperature saturated wet flue gas enters a subsequent operation unit, and the condensate water enters the condensate water recovery unit;
the reheater heats the flue gas and then sends the flue gas into a chimney for discharging, and a heat transmission channel is arranged between the reheater and the cooler and receives heat collected by the cooler.
Further, the cooling medium of the cooler is circulating water.
Furthermore, the reheater receives the hot steam transmitted from the heat transmission channel, the temperature of the flue gas in the reheater is raised, and the steam is condensed into water and flows back to the condensed water recovery unit.
Has the advantages that: the smoke white elimination system is reasonable in arrangement and suitable for multiple industries; the energy-saving and environment-friendly smoke reheating device can achieve the aim of white smoke elimination without external heat source investment in the smoke reheating process. The humidity of the flue gas treated by the system is lower and can be improved by 20 percent compared with the prior art; by adopting a mode of condensing first and then heating, the heat energy condensed in the front is used for heating the subsequent process, so that a heat source for heating can be saved; through the precooling of earlier stage, can use the cold source less in flue gas cooling process, can practice thrift the running cost of system, improve stability.
Drawings
Fig. 1 is a connection structure diagram of the present invention.
In the figure, 1-heat transmission channel, 2-air preheater, 3-dust remover, 4-induced draft fan, 5-cooler, 6-desulfurizing tower, 7-condenser, 8-reheater, 9-cold source and 10-chimney.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A condensation reheating flue gas whitening system is shown in figure 1 and comprises an air preheater 2, a dust remover 3, an induced draft fan 4, a cooler 5, a desulfurizing tower 6, a condenser 7, a reheater 8 and a chimney 10; the flue gas passes through an air preheater 2, a dust remover 3, a draught fan, a 4 cooler 5, a desulfurizing tower 6, a condenser 7, a reheater 8 and a chimney 10 in sequence.
Wherein, the cooler 5 cools the flue gas, the circulating cooling water in the cooler 5 is heated, the high-temperature heat of the flue gas is collected, and the temperature of the flue gas is reduced;
the condenser 7 is connected with a cold source 9 and is used for cooling and dehumidifying the saturated wet flue gas from the desulfurizing tower 6, removing part of water vapor in the flue gas and forming saturated wet flue gas with lower temperature; the condenser 7 comprises a circulating water cooling unit, a steam-water separation unit and a condensate recovery unit, wet flue gas is cooled and condensed to obtain water, water vapor is separated out through the steam-water separation unit in the form of condensate water, the wet flue gas saturated at lower temperature enters the reheater 8, and the condensate water enters the condensate recovery unit;
the reheater 8 heats the flue gas and then sends the flue gas into a chimney 10 to be discharged, a heat transmission channel 1 is arranged between the reheater 8 and the cooler 5 to receive hot steam from the cooler 5 transmitted through the heat transmission channel 1, the flue gas in the reheater 8 is heated, and the steam is condensed into water and flows back to a condensate recovery unit.
Although technical solutions of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides a flue gas that condensation was reheated disappears white system which characterized in that: the system comprises an air preheater, a dust remover, a draught fan, a cooler, a desulfurizing tower, a condenser, a reheater and a chimney; the flue gas passes through an air preheater, a dust remover, a draught fan, a cooler, a desulfurizing tower, a condenser, a reheater and a chimney in turn, wherein,
the cooler cools the flue gas, a cooling medium in the cooler is heated, high-temperature heat of the flue gas is collected, and the temperature of the flue gas is reduced;
the condenser is connected with a cold source and is used for cooling and dehumidifying the saturated wet flue gas from the desulfurizing tower, removing a part of water vapor in the flue gas and forming saturated wet flue gas with lower temperature; the condenser comprises a circulating water cooling unit, a steam-water separation unit and a condensate water recovery unit, wet flue gas is cooled and condensed to obtain water, water vapor is separated out through the steam-water separation unit in the form of condensate water, the lower-temperature saturated wet flue gas enters a subsequent operation unit, and the condensate water enters the condensate water recovery unit;
the reheater heats the flue gas and then sends the flue gas into a chimney for discharging, and a heat transmission channel is arranged between the reheater and the cooler and receives heat collected by the cooler.
2. The flue gas whitening system with condensing and reheating functions as claimed in claim 1, wherein the cooling medium of the cooler is circulating water.
3. The flue gas whitening system with condensing and reheating as claimed in claim 1 or 2, wherein the reheater receives hot steam transmitted from the heat transmission channel, heats flue gas in the reheater, condenses the steam into water, and returns the water to the condensate recovery unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810906907.2A CN110822463A (en) | 2018-08-10 | 2018-08-10 | Flue gas that condensation was reheated disappears white system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810906907.2A CN110822463A (en) | 2018-08-10 | 2018-08-10 | Flue gas that condensation was reheated disappears white system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110822463A true CN110822463A (en) | 2020-02-21 |
Family
ID=69541054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810906907.2A Pending CN110822463A (en) | 2018-08-10 | 2018-08-10 | Flue gas that condensation was reheated disappears white system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110822463A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113332838A (en) * | 2021-05-31 | 2021-09-03 | 国能神东煤炭集团有限责任公司 | Smoke white elimination control method, storage medium and electronic equipment |
| CN114151820A (en) * | 2021-11-30 | 2022-03-08 | 中国华能集团清洁能源技术研究院有限公司 | A desulfurization slurry whitening system and its working method |
| CN114923339A (en) * | 2022-03-22 | 2022-08-19 | 昆明理工大学 | A medium and low temperature flue gas dewhitening, waste heat and water resource recovery system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007002768A (en) * | 2005-06-24 | 2007-01-11 | Hitachi Ltd | High humidity gas turbine system, control device and control method thereof |
| CN105937773A (en) * | 2016-06-02 | 2016-09-14 | 山东泓奥电力科技有限公司 | Power station boiler condensing flue gas dehumidification and purification energy-saving system |
| CN106474860A (en) * | 2015-08-25 | 2017-03-08 | 贺方昀 | Wet desulfurization flue gas processing system and processing method |
| CN206347555U (en) * | 2016-12-20 | 2017-07-21 | 中国能源建设集团浙江省电力设计院有限公司 | A kind of economic benefits and social benefits supplementary heat exchanger system for MGGH |
| CN108126482A (en) * | 2017-12-07 | 2018-06-08 | 天津华赛尔传热设备有限公司 | A kind of heating agent flue gas of tower condensed exterior disappears white system |
| CN108343983A (en) * | 2017-01-24 | 2018-07-31 | 中国电力工程顾问集团华北电力设计院有限公司 | Eliminate the device of chimney white plume |
-
2018
- 2018-08-10 CN CN201810906907.2A patent/CN110822463A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007002768A (en) * | 2005-06-24 | 2007-01-11 | Hitachi Ltd | High humidity gas turbine system, control device and control method thereof |
| CN106474860A (en) * | 2015-08-25 | 2017-03-08 | 贺方昀 | Wet desulfurization flue gas processing system and processing method |
| CN105937773A (en) * | 2016-06-02 | 2016-09-14 | 山东泓奥电力科技有限公司 | Power station boiler condensing flue gas dehumidification and purification energy-saving system |
| CN206347555U (en) * | 2016-12-20 | 2017-07-21 | 中国能源建设集团浙江省电力设计院有限公司 | A kind of economic benefits and social benefits supplementary heat exchanger system for MGGH |
| CN108343983A (en) * | 2017-01-24 | 2018-07-31 | 中国电力工程顾问集团华北电力设计院有限公司 | Eliminate the device of chimney white plume |
| CN108126482A (en) * | 2017-12-07 | 2018-06-08 | 天津华赛尔传热设备有限公司 | A kind of heating agent flue gas of tower condensed exterior disappears white system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113332838A (en) * | 2021-05-31 | 2021-09-03 | 国能神东煤炭集团有限责任公司 | Smoke white elimination control method, storage medium and electronic equipment |
| CN114151820A (en) * | 2021-11-30 | 2022-03-08 | 中国华能集团清洁能源技术研究院有限公司 | A desulfurization slurry whitening system and its working method |
| CN114923339A (en) * | 2022-03-22 | 2022-08-19 | 昆明理工大学 | A medium and low temperature flue gas dewhitening, waste heat and water resource recovery system |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200221 |
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| RJ01 | Rejection of invention patent application after publication |