CN203731451U - Flue gas desulfurating and exhausting system of boiler - Google Patents
Flue gas desulfurating and exhausting system of boiler Download PDFInfo
- Publication number
- CN203731451U CN203731451U CN201420082192.0U CN201420082192U CN203731451U CN 203731451 U CN203731451 U CN 203731451U CN 201420082192 U CN201420082192 U CN 201420082192U CN 203731451 U CN203731451 U CN 203731451U
- Authority
- CN
- China
- Prior art keywords
- flue gas
- chimney
- desulfurizing tower
- boiler
- desulfurizer
- 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.)
- Expired - Fee Related
Links
Abstract
Disclosed is a flue gas desulfurating and exhausting system of a boiler. The flue gas desulfurating and exhausting system of the boiler comprises a chimney (1), a supporting member (2), a desulfurizer (3), an inlet flue (4) of the desulfurizer, a flue gas air cooler (5), a demister (6), a fuel gas heater (7), an oxidation air blower (8) and an oxidation air contacting pipe (9). The flue gas desulfurating and exhausting system of the boiler is characterized in that the chimney (1) is upright arranged on the supporting member (2), the desulfurizer (3) is arranged under the chimney (1), an outlet of the desulfurizer (3) is communicated with the bottom of the chimney (1), the flue gas air cooler (5) is arranged on the inlet flue (4), the demister (6) is arranged in the desulfurizer (3), the fuel gas heater (7) with an inlet thereof connected with an outlet pipeline of the oxidation air blower (8) is arranged above the demister (6), and an outlet pipeline of the fuel gas heater (7) is connected with the lower portion of the desulfurizer (3). The flue gas desulfurating and exhausting system of the boiler has the advantages of smaller floor area, reduced system resistance, lower power consumption of a desulfuration fan and more reliable generator operation.
Description
Technical field
The utility model relates to coal-fired station's flue gases purification field, is exactly a kind of boiler flue gas desulfurization exhaust system.
Background technology
Lime stone--gypsum sulfur removal technology is most widely used a kind of desulfur technology in the world.Its operation principle is: agstone is added water and makes slurries and pump into absorption tower (or claim desulfurizing tower) as absorbent and fully contact mixing with flue gas, calcium carbonate in sulfur dioxide and slurries in flue gas and the air blasting from bottom, absorption tower carry out oxidation reaction and generate calcium sulfate, calcium sulfate reaches after certain saturation degree, and crystallization forms dihydrate gypsum.The gypsum slurries of discharging through absorption tower is through concentrated, dehydration, make its water content be less than 10%, then delivering to gypsum bunker with conveyer stacks, flue gas after desulfurization is removed droplet through demister, then enters atmosphere (also have heat temperature raising not directly discharge) by chimney after heat exchanger heat temperature raising.Because absorption tower inner absorbent slurries contact with flue gas by circulating pump iterative cycles, absorbent utilization rate is very high, and calcium sulfur ratio is lower, and desulfurization degree can be greater than 95%.But the shortcoming that prior art exists is: flue gas desulfurization, heating, the separate layout of tapping equipment, floor space is large, and equipment is crowded; Flue flow process is full of twists and turns, and SR is large, haves no alternative but export at induced-draught fan the one-level booster fan of having connected again.The increase of a large amount of desulfurization current consuming apparatus including booster fan increases considerably thermal power plant self power consumption, only exports electric energy and reduces, and the net coal consumption rate of unit significantly increases; Setting up of booster fan, the cancellation of its bypass gas baffle simultaneously also makes the operational reliability in thermal power plant further reduce; The unplanned stoppage in transit number of times of the unit causing due to booster fan fault will increase.
Summary of the invention
The utility model is solution prior art thermal power plant lime stone--the problems such as ammonia-plaster mode desulphurization system power consumption is large, equipment dependability is poor, and a kind of boiler flue gas desulfurization exhaust system is provided.
The utility model solves the technical scheme that its technical problem adopts: a kind of boiler flue gas desulfurization exhaust system, comprise: chimney (1), supporting member (2), desulfurizing tower (3), former flue gas flue (4), flue gas air cooler (5), demister (6), flue gas heater (7), oxidation fan (8), oxidation air liaison tube (9), it is characterized in that: chimney (1) is supported on supporting member (2), desulfurizing tower (3) is positioned at chimney (1) below, the outlet of desulfurizing tower (3) is communicated with chimney (1) bottom, former flue gas flue (4) is connected with desulfurizing tower (3), which is provided with flue gas air cooler (5), in desulfurizing tower (3), be provided with demister (6), the top of demister (6) is provided with flue gas heater (7), the entrance of flue gas heater (7) is connected with the outlet conduit of oxidation fan (8), the outlet conduit of flue gas heater (7) is connected with desulfurizing tower (3) bottom, and this outlet conduit is also provided with the oxidation air liaison tube (9) to adjacent desulfurizing tower.
The utility model compared with the prior art its beneficial effect fruit is: desulfurizing tower is positioned at chimney below, occupation area of equipment reduces, flue and chimney barrel contraction in length, the flow resistance of flue gas reduces greatly, thereby the booster fan that can omit available technology adopting is to improve the operational reliability in thermal power plant, can significantly reduce desulfurization auxiliary power consumption simultaneously; Adopt the hot-air of oxidation fan outlet as thermal source, in making clean flue gas after desulfurization obtain heating, also reduced the air themperature of oxidation fan outlet, thereby desulfurization oxidation air can use no or little desuperheating water, be conducive to reduce desulfurization wastewater; Compared with the swinging flue gas heat-exchange unit of prior art, can reduce to greatest extent flue gas resistance loss at the flue gas heater of the upper layout of desulfurizing tower, avoid the leakage problem of former flue gas to clean fume side simultaneously.Chimney is arranged at desulfurizing tower top and has also overcome the acid liquid corrosion problem of prior art desulfurization rear pass and chimney.Flue gas air cooler adopts gravity-flow ventilation cooling, has reduced the flue-gas temperature of desulfurizing tower entrance, is conducive to the carrying out of Dry FGD and improves desulfuration efficiency and do not need to consume any machine power; Desulfurizing tower entrance can be less with or without desuperheating water, one can reduce desulfurization wastewater, two can reduce flue gas resistance, be conducive to that flue gas enters diffusion after tower and with spray under fully contacting of desulfurization slurry and improve desulfuration efficiency.
Brief description of the drawings
Fig. 1 is the utility model system principle schematic diagram.
In figure: 1-chimney, 2-supporting member, 3-desulfurizing tower, the former flue gas flue of 4-, 5-flue gas air cooler, 6-demister, 7-flue gas heater, 8-oxidation fan, 9-oxidation air liaison tube.
Detailed description of the invention
Below in conjunction with accompanying drawing, principle of the present utility model and feature are described, illustrated embodiment is only for explaining, be not intended to limit scope of the present utility model.All any amendments of making, improve, be equal to replacement etc., within all should being included in protection domain of the present utility model within thought of the present utility model and principle.
Referring to Fig. 1, a kind of boiler flue gas desulfurization exhaust system, comprise: chimney (1), supporting member (2), desulfurizing tower (3), former flue gas flue (4), flue gas air cooler (5), demister (6), flue gas heater (7), oxidation fan (8), oxidation air liaison tube (9), it is characterized in that: chimney (1) is supported on supporting member (2), desulfurizing tower (3) is positioned at chimney (1) below, the outlet of desulfurizing tower (3) is communicated with chimney (1) bottom, former flue gas flue (4) is connected with desulfurizing tower (3), which is provided with flue gas air cooler (5), in desulfurizing tower (3), be provided with demister (6), the top of demister (6) is provided with flue gas heater (7), the entrance of flue gas heater (7) is connected with the outlet conduit of oxidation fan (8), the outlet conduit of flue gas heater (7) is connected with desulfurizing tower (3) bottom, and this outlet conduit is also provided with the oxidation air liaison tube (9) to adjacent desulfurizing tower.
Boiler smoke enters desulfurizing tower (3) by former flue gas flue (4) after flue gas air cooler (5) cooling, clean flue gas after desulfurization upwards flows along desulfurizing tower (3), remove after the droplet carrying through demister (6), continue upwards to flow through flue gas heater (7), after clean flue gas is heated, enter chimney (1), finally enter atmosphere from chimney (1) top.
Flue gas heater (7) is surface-type heat exchanger, can be separate many groups, and can adopt the various heating sources such as flue gas, steam, hot-air; At this, the pipe side that the hot-air of oxidation fan (8) outlet enters flue gas heater (7), transfer heat to after the clean flue gas after desulfurization, its temperature reduces, and enters desulfurizing tower (3) bottom be connected with the female pipe (not shown) of distribution in desulfurizing tower (3) by the pipeline being connected with desulfurizing tower (3) bottom; Referring to Fig. 1, for double tower concentric stack system, and be provided with oxidation air liaison tube (9) between the oxidation air pipeline that is connected of desulfurizing tower (3) bottom.
The (not shown) that flue gas air cooler (5) is made up of the less parallel flue branch road in several cross sections, has formed the free convection passage of air, to play the cooling effect to former flue gas between adjacent flue branch road.
Claims (2)
1. a boiler flue gas desulfurization exhaust system, comprise: chimney (1), supporting member (2), desulfurizing tower (3), desulfurizing tower gas approach (4), flue gas air cooler (5), demister (6), flue gas heater (7), oxidation fan (8), oxidation air liaison tube (9), it is characterized in that: chimney (1) is supported on supporting member (2), desulfurizing tower (3) is positioned at chimney (1) below, the outlet of desulfurizing tower (3) is communicated with chimney (1) bottom, desulfurizing tower gas approach (4) is provided with flue gas air cooler (5), in desulfurizing tower (3), be provided with demister (6), the top of demister (6) is provided with flue gas heater (7), the entrance of flue gas heater (7) is connected with the outlet conduit of oxidation fan (8), and the outlet conduit of flue gas heater (7) is connected with desulfurizing tower (3) bottom.
2. a kind of boiler flue gas desulfurization exhaust system as claimed in claim 1, it is characterized in that: the entrance of described flue gas heater (7) is connected with the outlet conduit of oxidation fan (8), the outlet conduit of flue gas heater (7) is connected with desulfurizing tower (3) bottom, and this outlet conduit is also provided with the oxidation air liaison tube (9) to adjacent desulfurizing tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420082192.0U CN203731451U (en) | 2014-02-19 | 2014-02-19 | Flue gas desulfurating and exhausting system of boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420082192.0U CN203731451U (en) | 2014-02-19 | 2014-02-19 | Flue gas desulfurating and exhausting system of boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203731451U true CN203731451U (en) | 2014-07-23 |
Family
ID=51201520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420082192.0U Expired - Fee Related CN203731451U (en) | 2014-02-19 | 2014-02-19 | Flue gas desulfurating and exhausting system of boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203731451U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154550A (en) * | 2014-08-15 | 2014-11-19 | 哈尔滨工业大学 | Desulfuration and flue gas emission integrated chimney |
| CN104874261A (en) * | 2015-05-30 | 2015-09-02 | 中国能源建设集团广东省电力设计研究院有限公司 | Integrated desulfurizing tower with fume heating structure |
| CN108343981A (en) * | 2017-01-23 | 2018-07-31 | 中国电力工程顾问集团华北电力设计院有限公司 | Desulfurizing tower and chimney combined into one apparatus |
-
2014
- 2014-02-19 CN CN201420082192.0U patent/CN203731451U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154550A (en) * | 2014-08-15 | 2014-11-19 | 哈尔滨工业大学 | Desulfuration and flue gas emission integrated chimney |
| CN104874261A (en) * | 2015-05-30 | 2015-09-02 | 中国能源建设集团广东省电力设计研究院有限公司 | Integrated desulfurizing tower with fume heating structure |
| CN108343981A (en) * | 2017-01-23 | 2018-07-31 | 中国电力工程顾问集团华北电力设计院有限公司 | Desulfurizing tower and chimney combined into one apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206950940U (en) | High energy efficiency flue gas desulphurization system | |
| CN206121503U (en) | Liquid cooling of wet desulphurization tower entoplasm is high -efficient flue gas processing system but | |
| CN201251371Y (en) | Flue gas pre-cooling system with highly-effective water and energy conservation | |
| CN204786491U (en) | Boiler smoke waste -heat application system | |
| CN205783036U (en) | A kind of power-plant flue gas system heat-exchanger rig | |
| CN107178814A (en) | A kind of thermal power plant boiler fume afterheat is used for the energy conserving system of central heating | |
| CN204952337U (en) | Wet flue gas desulfurization heat pipe formula heat transfer defogging device | |
| CN203731451U (en) | Flue gas desulfurating and exhausting system of boiler | |
| CN103672936A (en) | Natural circulation indirect type flue gas reheater | |
| CN201827875U (en) | Low-temperature flue gas waste heat recovery device | |
| CN201389423Y (en) | Flue gas desulphurization dust removing tower for coal burning boiler | |
| CN207006114U (en) | A kind of energy conserving system of boiler | |
| CN205807470U (en) | A kind of gas fired-boiler flue gas waste heat recovery apparatus | |
| CN203231327U (en) | Smoke heat exchanging system | |
| CN103032881A (en) | System using extraction steam of boiler unit to heat clean smoke after desulfurization | |
| CN208750751U (en) | A kind of desulfurization fume disappears white system | |
| CN104154553A (en) | Flue gas treatment device | |
| CN202221098U (en) | Mixed type GGH system | |
| CN107684817A (en) | A kind of flue gas desulfurization process system | |
| CN207035182U (en) | A kind of steam power plant's gas cleaning and heat energy utilization system | |
| CN203068557U (en) | Granular fuel boiler and dry desulfurization process system | |
| CN206746297U (en) | A kind of wet desulfurization system with low temperature slurry characteristic | |
| CN210332239U (en) | Power plant flue gas emission system and desulphurization unit | |
| CN201973698U (en) | Flue gas waste heat recovery device | |
| CN203790824U (en) | High-efficiency boiler smoke desulphurization tower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 Termination date: 20160219 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |