CN205783036U - A kind of power-plant flue gas system heat-exchanger rig - Google Patents
A kind of power-plant flue gas system heat-exchanger rig Download PDFInfo
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- CN205783036U CN205783036U CN201620612235.0U CN201620612235U CN205783036U CN 205783036 U CN205783036 U CN 205783036U CN 201620612235 U CN201620612235 U CN 201620612235U CN 205783036 U CN205783036 U CN 205783036U
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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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
This utility model relates to flue gas desulphurization system field, is specifically related to a kind of power-plant flue gas system heat-exchanger rig.Including several heat pipes (1), low-temperature flue gas passage (3), high temp. flue (2), flue gas enters dry collector (25) by high temp. flue or/and after desulfurizing tower, the flue gas of discharge enters low-temperature flue gas passage (3)；Described low-temperature flue gas passage (3) and high temp. flue (2) have one section the most close to each other, and high temp. flue be positioned at lower section described heat pipe (1) heat absorbing end be placed in the inside of high temp. flue and contact with each other with high-temperature flue gas, described release end of heat is placed in the inside of low-temperature flue gas passage and contacts with each other with low-temperature flue gas.This utility model can heat low-temperature zone flue gas by utilizing fume high-temperature section self heat, it is not necessary to external heat source, is effectively increased dry collector, desulphurization system service behaviour, promotes the diffusion of fume emission, reduces engineering construction investment and floor space.
Description
Technical field
This utility model relates to flue gas desulphurization system field, is specifically related to a kind of power-plant flue gas system heat-exchanger rig.
Background technology
Along with developing rapidly of global economy, people are also faced with the environmental problem of sternness when enjoying its achievement, by firing
The pollutant that coal-fired plant and Industrial Boiler produce are the main sources of air environmental pollution." coal electricity energy-saving and emission-reduction upgrading and transformation
Action plan (2014-2020) " require eastern region (Liaoning, Beijing, Tianjin, Hebei, Shandong, Shanghai, Jiangsu, Zhejiang,
11 provinces and cities such as Fujian, Guangdong, Hainan) newly-built Thermal generation unit Air Pollutant Emission concentration basically reaches gas turbine
(i.e. under the conditions of benchmark oxygen content 6%, flue dust, sulfur dioxide, discharged nitrous oxides concentration are respectively no higher than for group emission limit
10,35,50 milligram/cubic metre), (Heilungkiang, Jilin, Shanxi, Anhui, Hubei, Hunan, Henan, Jiangxi etc. 8, middle part
Save) new-built unit in principle close to or up gas turbine group emission limit, encourage west area new-built unit close to or up
Gas turbine group emission limit.To the year two thousand twenty, eastern region active service 300,000 kilowatts and above public Thermal generation unit, 100,000 thousand
Watt and above provide Thermal generation unit and other Thermal generation unit with good conditionsi, Air Pollutant Emission concentration after transformation for oneself
Basically reach gas turbine group emission limit.Containing substantial amounts of sulfur dioxide in the flue gas of coal-burning power plant and Industrial Boiler, directly
Discharge can form acid rain, causes Heavy environmental pollution, and the control of sulfur dioxide has caused various circles of society's extensive concern.Wet method
Desulfurization is China's topmost coal fired power plant SO 2 from fume emission control technique.Especially limestone (or Calx) Gypsum Fibrosum
Wet desulfurizing process, for current widely used wet fuel gas desulfurizing technology.It makees absorbent with limestone (or Calx)
Sulfur dioxide in washing flue gas generates calcium sulfite, then carries out oxidation reaction ultimately produce Gypsum Fibrosum, desulfurization with the air added
Sulfur dioxide, purifying smoke.Whole course of reaction all completes in desulfuration absorbing tower, and the optimum temperature of reaction is generally 50 DEG C
Left and right.And take after such as limestone (or Calx) gypsum wet sulfur removal technology carries out desulfurization process to flue gas, at me
State some areas occur in that serious " chimney rain " phenomenon, and after wet desulphurization, flue-gas temperature substantially reduces, and causes flue gas
Rising height wretched insufficiency, flue gas pollutant diffusivity is affected.It addition, the coal-burning power plant of China's most area active service
The general temperature of flue gas discharged with Industrial Boiler all at 130～160 DEG C, basic above intrinsic economic exhaust gas temperature 110
DEG C, when exhaust gas temperature is higher, flue dust is higher than resistance, causes the electrostatic precipitation being arranged at before the smoke inlet of desulfuration absorbing tower
The efficiency of dust collection of device also can decrease, and dust emission may be caused the most up to standard, and " chimney rain " not only occurs in the flue gas of discharge, also
Likely there is emitting the phenomenon of " white cigarette ".For above-mentioned situation, use arranges gas-gas heat exchanger (being called for short GGH) solution more in the industry
Relevant issues, after arranging GGH, " gypsum rain " problem can be controlled, but GGH investment and operating cost are higher, and there is resistance
High, corrode the shortcomings such as serious with blocking.
Utility model content
1, technical problem to be solved:
The problem existed for above-mentioned technology, the purpose of this utility model is to provide a kind of power-plant flue gas system heat exchange dress
Put, utilize heat transfer technology, by absorbing the interior energy of high-temperature flue gas, be lowered into the temperature of the flue gas of dry collector or desulfurizing tower
Degree, thus reduces flow and the dust specific resistance of flue gas, and utilizes the heat of fume high-temperature section that heat exchanger absorbed to absorption
The low-temperature flue gas of tower outlet heats, and improves exhaust gas temperature, reaches to eliminate " chimney rain " phenomenon, reduces the corrosion to chimney,
Improve atmosphere hoist height, the purpose promoting smoke-discharging pollution thing to spread.Further, apparatus structure of the present utility model is more reasonable,
Floor space is little, constructs convenient, and investment and operating cost are smaller, and its device resistance is the least, it is not easy to causes corrosion and blocks up
Plug, later maintenance is the most very convenient.
2, technical scheme:
In order to realize the above object, a kind of power plant of this utility model offer Novel flue gas heat-exchanger rig: a kind of power plant cigarette
Gas system heat-exchanger rig, including several heat pipes 1, low-temperature flue gas passage 3, high temp. flue 2, flue gas passes through high temp. flue
2 enter dry collector 25 or/and after desulfurizing tower, the flue gas of discharge enters low-temperature flue gas passage 3, it is characterised in that: described low
Temperature exhaust gases passes 3 and high temp. flue 2 have one section the most close to each other, and below high temp. flue is positioned at,
The heat absorbing end 17 of described heat pipe 1 is placed in the inside of high temp. flue and contacts with each other with high-temperature flue gas, described release end of heat 16
It is placed in the inside of low-temperature flue gas passage and contacts with each other with low-temperature flue gas.Can be by height by this power-plant flue gas system heat-exchanger rig
In temperature flue 2, the flue gas of 130 degrees centigrade is released thermal temperature and is reduced to 80 degrees centigrade, and then the flue gas after cooling enters
Enter dry collector or/and desulfurizing tower carries out desulfurization；Flue gas after desulfurization enters low-temperature flue gas passage 3, makes the flue gas temperature passed through
Degree rises to 75 degrees centigrade from 50 degrees Celsius.At this moment flue-gas temperature is higher than dew point temperature, it is possible to reduce flue gas to chimney
Corrosion, improves the rising height of flue gas, thus increases flue gas pollutant diffusivity.Described desulfurizing tower is wet desulfurization system.
Further, a kind of power plant Novel flue gas heat-exchanger rig, the working media within described heat pipe 1 is pure water,
The material of described heat pipe is carbon manganese steel or rustless steel or titanium or graphite etc..Medium in heat pipe is water, not only economy but also be prevented from
Secondary pollution.
Further, a kind of power plant Novel flue gas heat-exchanger rig, described heat pipe is gravity assisted heat pipe, and described gravity assisted heat pipe is vertical
Place.
Further, a kind of power plant Novel flue gas heat-exchanger rig, the profile of described heat pipe be pipe or elliptical tube, square tube or
Rectangle or manage flat shape pipe or corrugated tube.Its shape is the most identical with the shape of exhaust gases passes, the convenient sealing to flue gas.
Further, a kind of power plant Novel flue gas heat-exchanger rig, described high temperature channel is with low temperature path in the horizontal direction
Place close to each other arranges dividing plate, and described dividing plate can be the installing plate of heat pipe.This dividing plate can reduce high temp. flue with low
The heat exchange of temperature exhaust gases passes, increases the effect of this device.
This utility model can heat low-temperature zone flue gas by utilizing fume high-temperature section self heat, it is not necessary to external heat
Source, is effectively increased dry type (electric) cleaner unit, desulphurization system service behaviour, promotes the diffusion of fume emission, reduce engineering
Construction investment and floor space.Compared with the various heat-exchanger rigs of traditional GGH system and existing replacement GGH system, structure
Simply, light, it is possible to reduce corresponding flue supporting construction, and single heat pipe breaks down and does not interferes with the whole of heat-exchange system
Running body, stability is high.
3, beneficial effect:
This system is in operation does not increases any energy expenditure, and this application technology can also set on demand
Meter, to adjust the exhaust temperature of flue gas, the waste heat of recovered flue gas, energy-conserving and environment-protective are had great meaning.
Accompanying drawing explanation
Fig. 1: gravity assisted heat pipe principle schematic；
Fig. 2: a kind of energy-saving heat exchange principle of device schematic diagram for power-plant flue gas system；
Fig. 3: scheme one flow chart；
Fig. 4: scheme two flow chart.
Wherein: heat pipe 1, high temp. flue 2, low-temperature flue gas passage 3, heat pipe 11, fin 12, dividing plate 13, steam 14, liquid
Body 15, release end of heat 16, heat absorbing end 17, boiler 21, denitrification apparatus 22, air preheater 23, low-level (stack-gas) economizer 24, dry collector
25, power-plant flue gas system heat-exchanger rig 26, desulfurizing tower 27, chimney 28.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail.
Fig. 1 is the heat pipe principle figure used by this utility model, it should be pointed out that described heat pipe is not limited to the heat shown in Fig. 1
Pipe.Heat pipe is made up of heat pipe 11, fin 12, dividing plate 13.Inside heat pipe is to be pumped into negative pressure state, is filled with suitable liquid 15,
This boiling point of liquid is low, readily volatilized.Tube wall has wick, and it is made up of capillary-porous material.Heat pipe one end is heat absorbing end 17,
Other end is release end of heat 16, when heat pipe one end is heated, and the liquid rapid vaporization in capillary tube, steam 14 moving in thermal diffusion
Flowing to other end under power, and discharge heat in the condensation of cold end, liquid flows back to heat absorbing end along porous material by capillarity again
17, so circulation is more than, until heat pipe two ends temperature is equal, now steam heat diffusion stops.This circulation is quickly carried out,
Heat can be come by conduction continuously.The design that the use of this heat pipe makes people change traditional heat sinks is thought
Road, has broken away from simple dependence high air quantity motor to obtain the single radiating mode of more preferable radiating effect, uses hot pipe technique to make
Radiator, even with the slow-speed of revolution, low air quantity motor, equally obtains promising result so that the noise of puzzlement wind-cooling heat dissipating is asked
Topic is well solved, and opens heat radiation industry new world.
In view of the above feature of heat pipe product, this product is introduced desulfurization fume heat-exchange system, and passes through by this utility model
Reasonably arrangement so that it is play optimal effectiveness.
Scheme one: as shown in Figure 2 and Figure 3, the flue gas that boiler 21 produces first is passed through in out of stock device 22 and carries out out of stock process,
The flue gas dealt passes sequentially through air preheater 23 and low-level (stack-gas) economizer 24, is passed through dry collector 25 the most again, enters
High-temperature flue 2 in described flue gas system heat-exchanger rig 26, the flue gas entrance desulfurizing tower 27 that the temperature of generation is relatively low carries out desulfurization
Processing, the flue gas that desulfurization processed is passed through the low-temperature flue gas passage 3 in described flue gas system heat-exchanger rig 26 again, finally from chimney
It is discharged in air in 27
High temp. flue 2 is between the desulfurizing tower import at dry collector and desulfurizing tower 27 place, and low-temperature flue gas leads to
Road 3 connects desulfurizing tower outlet: the high-temperature flue gas produced when boiler 21, its temperature is about 130 degrees centigrade, by high-temperature flue gas
The entrance of passage 2 enters, and is arranged on the heat absorbing end 17 of heat pipe 1 outside high temp. flue
Starting heat absorption, the i.e. coolant-temperature gage of the working media in heat pipe 1 raises vaporization and produces low-pressure gaseous working media steam,
Steam moves to release end of heat 16.In this process, the flue gas in high-temperature flue gas road 2 can be lowered the temperature by vaporization heat absorption.From
And decrease the flow of flue gas and the ratio resistance of dust, strengthen the performance of desulfurizing tower.
After flue gas is by desulfurizer, the temperature ratio of flue gas is relatively low, needs to heat flue gas.Described low temperature cigarette
Gas passage 3 entrance flue gas after receiving desulfurization, described low-temperature flue gas passage 3 outlet flue gas after discharging intensification.This
Time gravity assisted heat pipe 1 condensation end in operation material liquidation exothermic reaction, transfer heat to the flue gas in low-temperature flue gas passage 3, rise
Flue gas after temperature, temperature reaches on dew point, it is possible to alleviate the corrosion to clean flue and chimney, improves the diffusance of pollutant.
Owing to the two ends of heat pipe can might not be in close contact with exhaust gases passes, the profile of the most described heat pipe can be justified
Pipe, elliptical tube, square tube, rectangular tube, pancake pipe and corrugated tube, make heat pipe and exhaust gases passes energy tight connecting.
The dividing plate 13 of described gravity assisted heat pipe 1 is by high temp. flue and low-temperature flue gas channel separation, and described dividing plate (13) is
Thermal insulation board, material is metallic plate or non-metal board.
Scheme two: structure is as shown in Figure 4, similar with such scheme one, the flue gas that boiler 21 produces first is passed through out of stock device
Carrying out out of stock process in 22, the flue gas dealt passes sequentially through air preheater 23, in described flue gas system heat-exchanger rig 26
High-temperature flue 2, be passed through dry collector 25 the most again, the relatively low flue gas of the temperature of generation enters desulfurizing tower 27 to be carried out at desulfurization
Reason, the flue gas that desulfurization processed is passed through the low-temperature flue gas passage 3 in described flue gas system heat-exchanger rig again, finally from chimney 27
It is discharged in air
Enter high temp. flue 2 from the flue gas of boiler or economizer 130 degrees centigrade out, pass through heat-exchanger rig
Processing, temperature is reduced to 80 degrees centigrade, subsequently into dry type (electric) cleaner unit, thus reduces the ratio resistance of dust, reduces
Flue gas flow, the specific dust collection area of increase electric cleaner, improve the efficiency of dust collection of dry type (electric) cleaner unit.Enter after dedusting
Desulfurizing tower desulfurization, the flue gas after desulfurization enters low-temperature flue gas passage 3, and temperature rises to 75 degrees centigrade from 50 degrees Celsius.Make
Flue-gas temperature is higher than dew point temperature, reduces the corrosion to chimney, improves the rising height of flue gas, increases flue gas pollutant diffusion energy
Power.
It addition, heat exchange structure, inlet flue duct and exhaust pass are arranged together by this utility model, decrease system footprint
Area, heat exchange structure is arranged near desulfurizing tower or electric cleaner, enters the first heat absorbing end 17 via heat pipe of flue gas of desulfurizing tower,
By heat pipe heat-absorbing action, reducing flue-gas temperature, the flue gas after cooling enters dry type (electric) cleaner unit or desulfurizing tower processes.
The flue gas of desulfurizing tower outlet is by discharging after release end of heat 16 heat temperature raising of heat pipe.Compared to traditional GGH system and existing
The various heat-exchanger rigs of some replacement GGH systems, simple in construction, light, it is possible to reduce corresponding flue supporting construction, and
Single heat pipe breaks down and does not interferes with the overall operation of heat-exchange system, and stability is high.
Although the present invention is open as above with preferred embodiment, but they are not for limiting the present invention, any ripe
Practise this those skilled in the art, without departing from the spirit and scope of the invention, can make various changes or retouch from working as, the therefore guarantor of the present invention
The scope of protecting should be with being as the criterion that claims hereof protection domain is defined.
Claims (5)
1. a power-plant flue gas system heat-exchanger rig, including several heat pipes (1), low-temperature flue gas passage (3), high temp. flue
(2), flue gas enters dry collector (25) by high temp. flue or/and after desulfurizing tower, the flue gas of discharge enters low temperature cigarette
Gas passage (3), it is characterised in that: described low-temperature flue gas passage (3) has one section of phase in the horizontal direction with high temp. flue (2)
The most close, and high temp. flue be positioned at lower section；The heat absorbing end of described heat pipe (1) be placed in high temp. flue inside and with height
Temperature flue gas contacts with each other, and release end of heat is placed in the inside of low-temperature flue gas passage and contacts with each other with low-temperature flue gas.
A kind of power-plant flue gas system heat-exchanger rig the most according to claim 1, it is characterised in that: described heat pipe (1) is internal
Working media be pure water, the material of described heat pipe is carbon manganese steel or rustless steel or titanium or graphite.
A kind of power-plant flue gas system heat-exchanger rig the most according to claim 1, it is characterised in that: described heat pipe (1) is attached most importance to
Power heat pipe, described gravity assisted heat pipe is vertically placed.
A kind of power-plant flue gas system heat-exchanger rig the most according to claim 1, it is characterised in that: outside described heat pipe (1)
Shape is pipe or elliptical tube or square tube or rectangular tube or pancake pipe or corrugated tube.
A kind of power-plant flue gas system heat-exchanger rig the most according to claim 1, it is characterised in that: described high temperature channel (2)
Arranging dividing plate (13) with low temperature path (3) place the most close to each other, described dividing plate (13) is the installation of heat pipe (1)
Plate, material is metallic plate or non-metal board.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620612235.0U CN205783036U (en) | 2016-06-21 | 2016-06-21 | A kind of power-plant flue gas system heat-exchanger rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620612235.0U CN205783036U (en) | 2016-06-21 | 2016-06-21 | A kind of power-plant flue gas system heat-exchanger rig |
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| CN205783036U true CN205783036U (en) | 2016-12-07 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106984130A (en) * | 2017-04-21 | 2017-07-28 | 南京常荣声学股份有限公司 | The method and device of plume drops in a kind of circulation temperature lowering and acoustic agglomeration water lift |
| CN107742847A (en) * | 2017-11-14 | 2018-02-27 | 安徽徽远成电气科技股份有限公司 | A kind of automatic temperature-control combined electric appliance cabinet and its control system |
| CN108180493A (en) * | 2018-02-09 | 2018-06-19 | 杨君文 | Flue gas waste heat utilization device and its technique |
| CN108469192A (en) * | 2018-04-04 | 2018-08-31 | 北京巴布科克·威尔科克斯有限公司 | A kind of heat exchanger and heat-exchange system to exchange heat for drum and high-temperature gas |
| CN108525503A (en) * | 2018-06-14 | 2018-09-14 | 河北星耀环境科技有限公司 | A kind of flue gas disappears white device |
| CN109798535A (en) * | 2019-02-28 | 2019-05-24 | 重庆赛迪热工环保工程技术有限公司 | A kind of GGH system |
| CN114263927A (en) * | 2022-03-02 | 2022-04-01 | 山西昌德大成科技有限公司 | Air heater device based on gravity heat pipe and configuration method of gravity heat pipe bundle |
| CN115507378A (en) * | 2022-10-12 | 2022-12-23 | 国家能源菏泽发电有限公司 | A Low Flow Resistance Air Preheater Based on Elliptical Heat Pipe Design |
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2016
- 2016-06-21 CN CN201620612235.0U patent/CN205783036U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106984130A (en) * | 2017-04-21 | 2017-07-28 | 南京常荣声学股份有限公司 | The method and device of plume drops in a kind of circulation temperature lowering and acoustic agglomeration water lift |
| CN107742847A (en) * | 2017-11-14 | 2018-02-27 | 安徽徽远成电气科技股份有限公司 | A kind of automatic temperature-control combined electric appliance cabinet and its control system |
| CN108180493A (en) * | 2018-02-09 | 2018-06-19 | 杨君文 | Flue gas waste heat utilization device and its technique |
| CN108469192A (en) * | 2018-04-04 | 2018-08-31 | 北京巴布科克·威尔科克斯有限公司 | A kind of heat exchanger and heat-exchange system to exchange heat for drum and high-temperature gas |
| CN108469192B (en) * | 2018-04-04 | 2024-06-04 | 北京巴布科克·威尔科克斯有限公司 | Heat exchanger and heat exchange system for heat exchange between steam drum and high-temperature gas |
| CN108525503A (en) * | 2018-06-14 | 2018-09-14 | 河北星耀环境科技有限公司 | A kind of flue gas disappears white device |
| CN109798535A (en) * | 2019-02-28 | 2019-05-24 | 重庆赛迪热工环保工程技术有限公司 | A kind of GGH system |
| CN114263927A (en) * | 2022-03-02 | 2022-04-01 | 山西昌德大成科技有限公司 | Air heater device based on gravity heat pipe and configuration method of gravity heat pipe bundle |
| CN115507378A (en) * | 2022-10-12 | 2022-12-23 | 国家能源菏泽发电有限公司 | A Low Flow Resistance Air Preheater Based on Elliptical Heat Pipe Design |
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