CN207237684U - Coal-fired power station boiler flue gas moisture recycles and the system of fine particle removing - Google Patents
Coal-fired power station boiler flue gas moisture recycles and the system of fine particle removing Download PDFInfo
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- CN207237684U CN207237684U CN201721163315.3U CN201721163315U CN207237684U CN 207237684 U CN207237684 U CN 207237684U CN 201721163315 U CN201721163315 U CN 201721163315U CN 207237684 U CN207237684 U CN 207237684U
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Abstract
The utility model discloses the system of a kind of recycling of coal-fired power station boiler flue gas moisture and fine particle removing, including flue gas input channel, wet flue gas desulfurization tower, heat exchanger entrance flue, condensing heat exchanger and chimney；Flue gas input channel is connected with the entrance of wet flue gas desulfurization tower, first order demister is provided with wet flue gas desulfurization tower, the outlet of wet flue gas desulfurization tower is connected through heat exchanger entrance flue with the flue gas side entrance of condensing heat exchanger, the flue gas side outlet of condensing heat exchanger is connected through second level demister with chimney, wherein, the front side of condensing heat exchanger gas approach inner wall, rear side and top, and the front side of flue inner wall where condensing heat exchanger, rear side and top are both provided with array sonic generator, the device can realize the removing of moisture frontal convolution receipts and fine particle in flue gas, overcome traditional acoustic agglomeration efficiency low, sound pressure level is high, the shortcomings that energy consumption is big, and seed grain and extra water vapour need not be added.
Description
Technical field
The utility model belongs to steam power plant field, is related to a kind of coal-fired power station boiler flue gas moisture recycling and thin
The system of grain thing removing.
Background technology
Coal resources in China is mainly distributed on the drought and water-scarce areas such as Shanxi, Shaanxi, the Inner Mongol, Xinjiang, and water source is deficient tight
Restrict local energy resources construction of base and economic development again.Therefore, generate electricity, realize coal-fired how to efficiently use coal resources
The energy-saving and water-saving environmental protection operation in power station, is the challenge that China's thermal power industry can not be evaded and necessarily face at present and in the future.
Wet process of FGD as the most widely used flue gas desulfurization technique of current coal-fired power station boiler, have technology into
The ripe, remarkable advantage such as desulfuration efficiency is high, but there is also water consumption rate it is high the shortcomings that, it is promoted in northern drought and water-scarce area and be subject to
Considerable restraint.Moisture after being burnt using technological means to coal fired power plant in flue gas is recycled, and has significant section
Water effect, is the inevitable choice that coal fired power plant realizes energy-saving and water-saving operation.
After the moisture in flue gas is condensed, substantial amounts of pollutant such as fine particulates, NH4 +、SOxAnd the nuisance such as Hg
Matter is together removed, it might even be possible to realizes " zero water consume " wet process of FGD.Substantial amounts of condensation water recovery and use can also be reduced
Power plant water amount, this meaning to western " rich coal lacks water " the regional development power industry in China are particularly great.
Fine particle particularly aerodynamic diameter is less than 2.5 microns of particulate matter (PM2.5) it is China's urban atmosphere
Primary pollutant, fire coal is one of main source of fine particle in China's air, and as haze weather takes place frequently, fine particle is special
It is not PM2.5Emission control become be badly in need of solve key issue.But the removing sulfuldioxide of fine particle is in the presence of de- at present
Except the problems such as efficiency is relatively low or involves great expense, cause still there are a large amount of fine particles to be exhausted among air.
The main path of fine particle removing at present is by using physics such as steam phase transforming, acoustic agglomeration or electromagnetism reunions
Or chemical means increase fine particle particle diameter, then removed with conventional dust removal equipment.
CN10341849A is disclosed to be removed using the method raising electricity that water vapour and the reunion of coupling ultrasonic ripple are sprayed into flue gas
Dirt device is to PM in flue gas2.5The removal efficiency of dust.Itd is proposed in CN103736356B and CN104667695B in conventional electric precipitator
The acoustic wavefield that preceding flue sets improves the efficiency of conventional electric precipitator removing fine particle.One kind is disclosed in CN103706219B
Into flue gas atomized water spray and set sound source improve fine particle acoustic agglomeration efficiency, control PM2.5The method of discharge.
CN201105202Y, CN101219333A disclose the fine grain device of cooperation-removal in a kind of smoke-gas wet desulfurization, by
Smoke reutilizer and phase transformation condensing chamber are set respectively before and after desulfurizing tower, realize fine grain condensation growth and removing；
CN101732970B is disclosed makes cigarette by setting prewashing column and steam phase transforming room in wet flue gas desulfurization tower and adding steam
Gas reaches supersaturation and occurs the method for fine grained phase transformation condensation growth, and this method needs to add certain quantity of steam, energy consumption compared with
Height, and whole system is complex.CN100531862C is devised one kind and is taken off based on sound wave with additional seed grain synergy
Except fine grain apparatus and method, although this method is conducive to improve fine grain removal efficiency, but due to solid seed grain
It is difficult to be dispersed in air-flow after addition, have impact on agglomerating effect, meanwhile, addition solid particle increases in the gas flow again after
The load of dust remove of continuous deduster.
Utility model content
The purpose of the utility model is to overcome the shortcomings that the above-mentioned prior art, there is provided a kind of coal-fired power station boiler flue gas
Moisture recycles and the system of fine particle removing, the device can realize the removing of moisture frontal convolution receipts and fine particle in flue gas,
Overcome the shortcomings that traditional acoustic agglomeration efficiency is low, sound pressure level is high, energy consumption is big, and seed grain and the steaming of extra water need not be added
Vapour.
To reach above-mentioned purpose, the recycling of coal-fired power station boiler flue gas moisture and fine particle removing described in the utility model
System include flue gas input channel, wet flue gas desulfurization tower, heat exchanger entrance flue, condensing heat exchanger and chimney；
Flue gas input channel is connected with the entrance of wet flue gas desulfurization tower, and the first order is provided with wet flue gas desulfurization tower
Demister, the outlet of wet flue gas desulfurization tower is connected through heat exchanger entrance flue with the flue gas side entrance of condensing heat exchanger, cold
The flue gas side outlet of solidifying heat exchanger is connected through second level demister with chimney, wherein, condensing heat exchanger gas approach inner wall
Front side, rear side and the top of flue inner wall are both provided with array sound wave where front side, rear side and top and condensing heat exchanger
Generator.
Further include coolant intake pipe road, coolant outlet hose road, the first cooling sea water regulating valve, the second cooling sea water regulating valve
And cooling water circulating pump, wherein, coolant intake pipe road is connected with the entrance of the second cooling sea water regulating valve, the second cooling water tune
The outlet of section valve is connected with the outlet of the first cooling sea water regulating valve by the entrance of pipeline and Guan Houyu cooling water circulating pumps, cold
But the outlet of water-circulating pump is connected with the cooling water side entrance of condensing heat exchanger, the cooling water side of condensing heat exchanger outlet and the
The entrance and coolant outlet hose road of one cooling sea water regulating valve are connected.
The driving source of array sonic generator is compressed air or vapor, and the frequency of arrayed ultrasonic wave producer is
1000Hz-2200Hz, the sound pressure level of arrayed ultrasonic wave producer is 110dB~150dB.
Condensation water collection pond is further included, the top of array sonic generator, the top of condensing heat exchanger and the second level are removed
Water flushing device, the lower section of array sonic generator, the lower section of condensing heat exchanger and the second level are both provided with above day with fog
Catch basin is both provided with below demister, condensation water collection pond is connected with catch basin.
The material of condensing heat exchanger is anti-corrosion material.
Condensing heat exchanger is in horizontally disposed or is arranged vertically.
The utility model has the advantages that：
The system of the recycling of coal-fired power station boiler flue gas moisture and fine particle removing described in the utility model is specifically being grasped
When making, flue gas condensed heat exchanger cooling again after wet flue gas desulfurization tower wet desulphurization, so that the vapor in flue gas reaches
Undergo phase transition condensation to hypersaturated state, and using the fine grained in flue gas as the nuclei of condensation, at the same under the action of standing-wave sound field into
Row is quick to reunite, and finally falls down under gravity, so that the NH in flue gas4 +、SO2, fine particle and Hg etc.
Be dissolved in water harmful substance be condensed water removing, realize coal-fired power station boiler flue gas moisture recycling and fine particle removing, gram
The shortcomings that traditional acoustic agglomeration efficiency is low, sound pressure level is high and energy consumption is big is taken.In addition, it is necessary to explanation, the utility model without
Coal-fired power station boiler flue gas moisture can be achieved in solid seed grain and extra water vapour recycling and fine particle need to be added
Removing, there is good society and economic benefit.
Further, by water flushing device periodically to array sonic generator, condensing heat exchanger and second level demister
Water flushing is carried out, ensures the heat exchange efficiency of condensing heat exchanger and the removal effect of second level demister.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model.
Wherein, 1 be wet flue gas desulfurization tower, 2 be first order demister, 3 be array sonic generator, 4 be water rinse
Device, 5 be condensation water collection pond, 6 be cooling water circulating pump, 7 be condensing heat exchanger, 8 be second level demister, 9 be chimney, 10
It is the second cooling sea water regulating valve for the first cooling sea water regulating valve, 11.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings：
With reference to figure 1, the system of the recycling of coal-fired power station boiler flue gas moisture and fine particle removing described in the utility model
Including flue gas input channel, wet flue gas desulfurization tower 1, heat exchanger entrance flue, condensing heat exchanger 7 and chimney 9；Flue gas input pipe
Road is connected with the entrance of wet flue gas desulfurization tower 1, and first order demister 2, wet flue gas are provided with wet flue gas desulfurization tower 1
The outlet of desulfurizing tower 1 is connected through heat exchanger entrance flue with the flue gas side entrance of condensing heat exchanger 7, the cigarette of condensing heat exchanger 7
Gas side outlet is connected through second level demister 8 with chimney 9, wherein, the front side of 7 gas approach inner wall of condensing heat exchanger, rear side
And front side, rear side and the top of 7 place flue inner wall of top and condensing heat exchanger are both provided with array sonic generator 3.
The utility model further includes coolant intake pipe road, coolant outlet hose road, the first cooling sea water regulating valve 10, second
Cooling sea water regulating valve 11 and cooling water circulating pump 6, wherein, the entrance phase in coolant intake pipe road and the second cooling sea water regulating valve 11
Connection, the outlet of the second cooling sea water regulating valve 11 pass through pipeline and Guan Houyu cooling waters with the outlet of the first cooling sea water regulating valve 10
The entrance of circulating pump 6 is connected, and the outlet of cooling water circulating pump 6 is connected with the cooling water side entrance of condensing heat exchanger 7, condensation
The cooling water side outlet of heat exchanger 7 is connected with the entrance and coolant outlet hose road of the first cooling sea water regulating valve 10.
The driving source of array sonic generator 3 is compressed air or vapor, the frequency of arrayed ultrasonic wave producer
For 1000Hz-2200Hz, the sound pressure level of arrayed ultrasonic wave producer is 110dB~150dB.
The utility model further includes condensation water collection pond 5, the top of array sonic generator 3, condensing heat exchanger 7 it is upper
Side and the top of second level demister 8 are both provided with water flushing device 4, the lower section of array sonic generator 3, condensing heat exchanger
7 lower section and the lower section of second level demister 8 are both provided with catch basin, and condensation water collection pond 5 is connected with catch basin.
The material of condensing heat exchanger 7 is anti-corrosion material；Condensing heat exchanger 7 is in horizontally disposed or is arranged vertically.
The specific work process of the utility model is：
The flue gas that coal-fired power station boiler burning produces is input to wet flue gas desulfurization tower 1 through flue gas input channel and carries out wet method
Desulfurization, the flue gas after wet desulphurization are entered in heat exchanger entrance flue after 2 demisting of first order demister；
First cooling sea water regulating valve is adjusted according to the temperature, humidity and exhaust gas volumn of 1 exit flue gas of wet flue gas desulfurization tower
The rotating speed of 10 aperture, the aperture of the second cooling sea water regulating valve 11 and cooling water circulating pump 6, makes 7 cooling water side of condensing heat exchanger
The water temperature of inlet cooling water is less than the water dew point of flue gas, while adjusts the working frequency of array sonic generator 3, makes array
Formula sonic generator 3 produces the standing-wave sound field of stabilization, and the condensed heat exchanger 7 of flue gas cools down, and reaches the vapor in flue gas
Saturation state, and condensation is undergone phase transition by the nuclei of condensation of the fine grained in flue gas, while rolled into a ball under the action of standing-wave sound field
It is poly-, finally fall under gravity in catch basin；The flue gas that condensing heat exchanger 7 exports is removed by second level demister 8
Discharged after mist through chimney 9.
Flue gas side entrance, flue gas side outlet, cooling water side entrance and the cooling water side inlet of condensing heat exchanger 7 are respectively provided with
Have temperature sensor, pressure sensor and flowmeter, wherein, the cooling water temperature of 7 cooling water side inlet of condensing heat exchanger and
Flow can be adjusted by the first cooling sea water regulating valve 10, the second cooling sea water regulating valve 11 and cooling water circulating pump 6.
The flue size of mounted array formula sonic generator 3 and condensing heat exchanger 7 is changed by pending exhaust gas volumn and condensation
The resistance of hot 7 fume side of device determines, it is ensured that flue gas is less than or equal to 10m/s in the flow velocity of this section of flue, and the residence time is more than or equal to 2
Second.
The utility model is in the spy of nearly saturation or hypersaturated state for 1 exiting flue gas humidity of wet flue gas desulfurization tower
Point, by the way that flue gas progress condensing heat-exchange is reached saturation or hypersaturated state, while using array sonic generator 3 to flue gas
Handled, the vapor in flue gas is condensed reunion under phase transformation and the coupling of sound wave with fine particle and grow up, so that
The efficiency that raising drop and fine particle reunion are grown up, and steamed without adding seed grain or extra water in acoustic wavefield
Vapour, you can realize the recycling of coal-fired power station boiler flue gas moisture and the low energy consumption removing of fine particle, have good society and
Economic benefit.
Claims (6)
1. a kind of coal-fired power station boiler flue gas moisture recycling and the system of fine particle removing, it is characterised in that defeated including flue gas
Enter pipeline, wet flue gas desulfurization tower (1), heat exchanger entrance flue, condensing heat exchanger (7) and chimney (9)；
Flue gas input channel is connected with the entrance of wet flue gas desulfurization tower (1), and first is provided with wet flue gas desulfurization tower (1)
Level demister (2), the outlet of wet flue gas desulfurization tower (1) enters through heat exchanger entrance flue and the fume side of condensing heat exchanger (7)
Mouth is connected, and the flue gas side outlet of condensing heat exchanger (7) is connected through second level demister (8) with chimney (9), wherein, condensation
The front side of flue inner wall where the front side, rear side and top of heat exchanger (7) gas approach inner wall and condensing heat exchanger (7), after
Side and top are both provided with array sonic generator (3).
2. coal-fired power station boiler flue gas moisture recycling according to claim 1 and the system of fine particle removing, its feature
It is, further includes coolant intake pipe road, coolant outlet hose road, the first cooling sea water regulating valve (10), the second chilled water modulation
Valve (11) and cooling water circulating pump (6), wherein, coolant intake pipe road is connected with the entrance of the second cooling sea water regulating valve (11)
Logical, the outlet of the second cooling sea water regulating valve (11) is cooled down with the outlet of the first cooling sea water regulating valve (10) by pipeline and Guan Houyu
The entrance of water-circulating pump (6) is connected, the outlet of cooling water circulating pump (6) and the cooling water side entrance phase of condensing heat exchanger (7)
Connection, the cooling water side outlet of condensing heat exchanger (7) and the entrance and coolant outlet hose road of the first cooling sea water regulating valve (10)
It is connected.
3. coal-fired power station boiler flue gas moisture recycling according to claim 1 and the system of fine particle removing, its feature
It is, the driving source of array sonic generator (3) is compressed air or vapor, and the frequency of arrayed ultrasonic wave producer is
1000Hz-2200Hz, the sound pressure level of arrayed ultrasonic wave producer is 110dB~150dB.
4. coal-fired power station boiler flue gas moisture recycling according to claim 1 and the system of fine particle removing, its feature
It is, further includes condensation water collection pond (5), the top of array sonic generator (3), the top of condensing heat exchanger (7) and
Water flushing device (4), the lower section of array sonic generator (3), condensing heat exchanger are both provided with above two level demister (8)
(7) catch basin is both provided with below lower section and second level demister (8), condensation water collection pond (5) are connected with catch basin.
5. coal-fired power station boiler flue gas moisture recycling according to claim 1 and the system of fine particle removing, its feature
It is, the material of condensing heat exchanger (7) is anti-corrosion material.
6. coal-fired power station boiler flue gas moisture recycling according to claim 1 and the system of fine particle removing, its feature
It is, condensing heat exchanger (7) is in horizontally disposed or is arranged vertically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721163315.3U CN207237684U (en) | 2017-09-11 | 2017-09-11 | Coal-fired power station boiler flue gas moisture recycles and the system of fine particle removing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721163315.3U CN207237684U (en) | 2017-09-11 | 2017-09-11 | Coal-fired power station boiler flue gas moisture recycles and the system of fine particle removing |
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| CN207237684U true CN207237684U (en) | 2018-04-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107398161A (en) * | 2017-09-11 | 2017-11-28 | 西安热工研究院有限公司 | Coal-fired power station boiler flue gas moisture reclaims and the system and method for fine particle removing |
| CN109506453A (en) * | 2018-12-27 | 2019-03-22 | 北京中矿博能节能科技有限公司 | Coal slime dries fume afterheat step advanced recycling system |
| WO2021184786A1 (en) * | 2020-03-16 | 2021-09-23 | 西安热工研究院有限公司 | Urea direct-injection pyrolysis denitrification device arranged inside outlet flue duct of gas turbine |
-
2017
- 2017-09-11 CN CN201721163315.3U patent/CN207237684U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107398161A (en) * | 2017-09-11 | 2017-11-28 | 西安热工研究院有限公司 | Coal-fired power station boiler flue gas moisture reclaims and the system and method for fine particle removing |
| CN109506453A (en) * | 2018-12-27 | 2019-03-22 | 北京中矿博能节能科技有限公司 | Coal slime dries fume afterheat step advanced recycling system |
| WO2021184786A1 (en) * | 2020-03-16 | 2021-09-23 | 西安热工研究院有限公司 | Urea direct-injection pyrolysis denitrification device arranged inside outlet flue duct of gas turbine |
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