CN210373507U - White smoke plume eliminating device of coal-fired power plant - Google Patents
White smoke plume eliminating device of coal-fired power plant Download PDFInfo
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- CN210373507U CN210373507U CN201920346239.2U CN201920346239U CN210373507U CN 210373507 U CN210373507 U CN 210373507U CN 201920346239 U CN201920346239 U CN 201920346239U CN 210373507 U CN210373507 U CN 210373507U
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
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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
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- 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]
- Y02B30/62—Absorption based systems
- Y02B30/625—Absorption based systems combined with heat or power generation [CHP], e.g. trigeneration
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Abstract
The utility model relates to a coal fired power plant white plume remove device belongs to the coal fired boiler field. The utility model is characterized in that: the system comprises a lithium bromide absorption refrigerator, a flue gas condenser, a flue gas reheater, a condensation circulating pump, a reheating circulating pump, a condensation working medium circulating pipeline, a reheating working medium circulating pipeline, a driving steam condensation water pipeline and a flue; the condensation circulating pump is arranged on the condensation working medium circulating pipeline, and the reheating circulating pump is arranged on the reheating working medium circulating pipeline; the flue gas condenser is connected with a condensing working medium circulation pipeline, the lithium bromide absorption refrigerator is connected with the condensing working medium circulation pipeline, the flue gas reheater is connected with a reheating working medium circulation pipeline, the lithium bromide absorption refrigerator is connected with the reheating working medium circulation pipeline, the flue gas reheater is connected with a driving steam condensation water pipeline, and the lithium bromide absorption refrigerator is connected with the driving steam condensation water pipeline. The utility model discloses cool down the condensation to the flue gas, reduce flue gas moisture content, eliminate coal fired power plant white plume phenomenon.
Description
Technical Field
The utility model relates to a coal fired power plant white plume remove device belongs to the coal fired boiler field.
Background
The limestone-gypsum wet desulphurization process is widely used in a desulphurization system of a coal-fired power generating set in China, the temperature of flue gas at the outlet of a desulphurization tower is reduced to 45-55 ℃, if the low-temperature saturated wet flue gas directly enters the atmospheric environment through a chimney, the low-temperature saturated wet flue gas is condensed into tiny liquid drops, and the tiny liquid drops appear white or gray due to the refraction and scattering effects of light, so that white smoke plume is generated, and visual pollution is caused. With the continuous deepening of national environmental protection work, relevant policy and regulations are formulated and issued successively in each province and city of China in recent years, and the measures are definitely required to be taken by a coal-fired power plant to eliminate the smoke plume phenomenon.
At present, domestic smoke plume treatment work is still in a starting stage, and mainstream processes can be classified into three types: condensation, heating, and condensation reheating. The condensation method can recover partial moisture from the flue gas, but the cooled flue gas is still saturated wet steam, and although the smoke plume phenomenon can be weakened to a certain extent, the smoke plume phenomenon cannot be eliminated; the heating method only reduces the relative humidity of the smoke and does not really reduce the moisture content of the smoke, so the smoke temperature is heated to a higher temperature to avoid smoke plume, and the energy consumption is higher; the condensation reheating method combines the advantages of the two processes, namely, the moisture in the flue gas is recovered, pollutants such as partial soluble salts in the flue gas are synchronously removed, the relative humidity of the flue gas can be reduced, and the smoke plume phenomenon is eliminated.
If the publication date is 2018, 10, and 02 days, and the patent number is 201721923594.9 in Chinese patent, a wet smoke plume elimination system is disclosed, a condensation reheating method process is adopted, and the technical scheme mainly comprises a first cooling subsystem, a second cooling subsystem and a heater, wherein the first cooling subsystem comprises a spray device, a circulating water tank, a dosing device, an air cooling tower and the like. Therefore, the scheme has various devices and complex systems, and the heat released in the flue gas condensation process is discharged to the atmosphere through the air cooling tower, so that the waste heat is not recycled, and the further improvement is to be realized.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provide a white smoke plume eliminating device of a coal-fired power plant with reasonable structural design. The white smoke plume eliminating device for the coal-fired power plant fully utilizes the self waste heat of smoke by relying on the heat transfer function of a lithium bromide absorption refrigerator, and achieves the aims of chimney white elimination and industrial water saving based on the process of firstly condensing and then reheating.
The utility model provides a technical scheme that above-mentioned problem adopted is: the white smoke plume eliminating device of the coal-fired power plant is characterized in that: the system comprises a lithium bromide absorption type refrigerator, a flue gas condenser, a flue gas reheater, a condensation circulating pump, a reheating circulating pump, a first electric regulating valve, a drain pipe, a second electric regulating valve, a condensation working medium circulating pipeline, a reheating working medium circulating pipeline, a driving steam condensation water pipeline and a flue; the condensation circulating pump is arranged on the condensation working medium circulating pipeline, and the reheating circulating pump is arranged on the reheating working medium circulating pipeline; the first electric regulating valve is arranged on a drain pipe, the drain pipe is connected with a flue gas condenser, and the second electric regulating valve is arranged on a driving steam condensate pipeline; the flue gas condenser is connected with a condensing working medium circulation pipeline, the refrigerating end of the lithium bromide absorption refrigerator is connected with the condensing working medium circulation pipeline, the flue gas reheater is connected with a reheating working medium circulation pipeline, the heat dissipation end of the lithium bromide absorption refrigerator is connected with the reheating working medium circulation pipeline, the flue gas reheater is connected with a driving steam condensation water pipeline, and the lithium bromide absorption refrigerator is connected with the driving steam condensation water pipeline; the flue gas condenser is connected with the flue, and the flue gas reheater is connected with the flue.
Further, flue gas condenser is indirect gas-liquid heat exchanger.
Further, the flue gas reheater is indirect gas-liquid heat exchanger.
A working method of the white smoke plume elimination device of the coal-fired power plant is characterized in that: the working method comprises the following steps: starting a lithium bromide absorption refrigerator, starting a second electric regulating valve to send driving steam, connecting a condensation working medium circulation pipeline with a refrigerating end of the lithium bromide absorption refrigerator, cooling working media in the condensation working medium circulation pipeline in the lithium bromide absorption refrigerator to form low-temperature working media, starting a condensation circulating pump to send the low-temperature working media into a flue gas condenser, cooling and condensing clean flue gas when passing through the flue gas condenser, discharging the generated condensed water through a drain pipe, heating the low-temperature working media in the flue gas condenser by the clean flue gas, and then cooling by the condensation working medium circulation pipeline to the lithium bromide absorption refrigerator, thus circularly realizing cooling and dehumidification of the clean flue gas; the reheating working medium circulation pipeline is connected with the heat dissipation end of the lithium bromide absorption refrigerator, the lithium bromide absorption refrigerator releases heat absorbed by the condensing working medium circulation pipeline and heat of driving steam to the reheating working medium circulation pipeline together to generate high-temperature working medium, the high-temperature working medium sends the hot working medium to the flue gas reheater through the driving of the reheating circulation pump, the high-temperature working medium is used for heating clean flue gas condensed by the flue gas condenser, the high-temperature working medium returns to the heat dissipation end of the lithium bromide absorption refrigerator through the reheating working medium circulation pipeline to be heated after being cooled, and the reheating of the clean flue gas is realized through the circulation; the driving steam is condensed into medium-temperature water with the temperature higher than that of the flue gas by a lithium bromide absorption refrigerator, enters a flue gas reheater through a driving steam condensed water pipeline to further raise the temperature of the flue gas, and finally returns to a condensed water system of the coal-fired unit according to a temperature matching principle.
Further, the utility model discloses under different operating modes, carry out the flow control of corresponding working medium through the adjustment to condensation circulating pump, reheat circulating pump and No. two electrical control valves, realize white plume remove device's effective, energy-conserving operation.
Compared with the prior art, the utility model, have following advantage and effect: (1) the device is less, the system structure is relatively simple, the maintenance is convenient, and the reliability is high. (2) The waste heat released in the flue gas condensation process is fully recovered, the waste heat is applied to flue gas reheating, the driving steam condensate is further applied to flue gas reheating and temperature raising, and the system waste heat is utilized to the maximum extent to promote system energy conservation. (3) The flue gas can be cooled and condensed, the moisture content of the flue gas is reduced, the recycling of flue gas condensate and the combined removal of partial flue gas pollutants are realized, the waste heat of a system is fully recycled, the temperature of the flue gas is increased, the relative humidity of the flue gas is reduced, and the white smoke plume phenomenon of a coal-fired power plant is eliminated.
Drawings
In order to more clearly illustrate the embodiments and/or prior art solutions of the present invention, the drawings used in the description of the embodiments and/or prior art will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive work.
Fig. 1 is a schematic structural diagram of a white smoke plume eliminating device of a coal-fired power plant in the embodiment of the present invention.
In the figure: the system comprises a lithium bromide absorption refrigerator 1, a flue gas condenser 2, a flue gas reheater 3, a condensation circulating pump 4, a reheating circulating pump 5, a first electric regulating valve 6, a drain pipe 7, a second electric regulating valve 8, a condensation working medium circulating pipeline 9, a reheating working medium circulating pipeline 10, a driving steam condensation water pipeline 11 and a flue 12.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
Examples are given.
Referring to fig. 1, the white smoke plume eliminating device in the coal-fired power plant in the embodiment includes a lithium bromide absorption refrigerator 1, a flue gas condenser 2, a flue gas reheater 3, a condensation circulating pump 4, a reheating circulating pump 5, a first electric regulating valve 6, a drain pipe 7, a second electric regulating valve 8, a condensation working medium circulating pipeline 9, a reheating working medium circulating pipeline 10, a driving steam condensate pipeline 11, and a flue 12.
In the embodiment, a condensation circulating pump 4 is arranged on a condensation working medium circulating pipeline 9, and a reheating circulating pump 5 is arranged on a reheating working medium circulating pipeline 10; the first electric regulating valve 6 is arranged on a drain pipe 7, the drain pipe 7 is connected with the flue gas condenser 2, and the second electric regulating valve 8 is arranged on a driving steam condensation water pipeline 11; the flue gas condenser 2 is connected with a condensing working medium circulation pipeline 9, the refrigerating end of the lithium bromide absorption refrigerator 1 is connected with the condensing working medium circulation pipeline 9, the flue gas reheater 3 is connected with a reheating working medium circulation pipeline 10, the heat dissipation end of the lithium bromide absorption refrigerator 1 is connected with the reheating working medium circulation pipeline 10, the flue gas reheater 3 is connected with a driving steam condensation water pipeline 11, and the lithium bromide absorption refrigerator 1 is connected with the driving steam condensation water pipeline 11; the flue gas condenser 2 is connected to the flue 12, and the flue gas reheater 3 is connected to the flue 12.
In this embodiment, the flue gas condenser 2 is an indirect gas-liquid heat exchanger, and the flue gas reheater 3 is an indirect gas-liquid heat exchanger.
The working method of the white smoke plume elimination device of the coal-fired power plant in the embodiment comprises the following steps.
Starting the lithium bromide absorption refrigerator 1, starting the second electric regulating valve 8 to send driving steam, connecting the condensation working medium circulation pipeline 9 with the refrigeration end of the lithium bromide absorption refrigerator 1, cooling the working medium in the condensation working medium circulation pipeline 9 in the lithium bromide absorption refrigerator 1 to form low-temperature working medium, starting the condensation circulating pump 4 to send the low-temperature working medium into the flue gas condenser 2, cooling and condensing the clean flue gas when passing through the flue gas condenser 2, discharging the generated condensed water through the drain pipe 7, heating the low-temperature working medium in the flue gas condenser 2 by the clean flue gas and then cooling the low-temperature working medium by the condensation working medium circulation pipeline 9 to the lithium bromide absorption refrigerator 1, and realizing cooling and dehumidification of the clean flue gas by circulation.
The reheating working medium circulation pipeline 10 is connected with the heat dissipation end of the lithium bromide absorption refrigerator 1, the lithium bromide absorption refrigerator 1 releases heat absorbed by the condensing working medium circulation pipeline 9 and heat of driving steam to the reheating working medium circulation pipeline 10 to generate high-temperature working medium, the high-temperature working medium is driven by the reheating circulating pump 5 to send the hot working medium to the flue gas reheater 3 to be used for heating clean flue gas condensed by the flue gas condenser 2, the high-temperature working medium is cooled and then returns to the heat dissipation end of the lithium bromide absorption refrigerator 1 through the reheating working medium circulation pipeline 10 to be heated, and the pure flue gas is reheated in the circulation mode.
The driving steam is condensed into medium-temperature water with the temperature higher than that of the flue gas by the lithium bromide absorption refrigerator 1, enters the flue gas reheater 3 through the driving steam condensed water pipeline 11 to further heat the flue gas, and finally returns to a condensed water system of the coal-fired unit according to a temperature matching principle.
Under different working conditions, the flow of corresponding working media is adjusted by adjusting the condensation circulating pump 4, the reheating circulating pump 5 and the second electric regulating valve 8, so that the white smoke plume eliminating device can effectively operate in an energy-saving mode.
In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an example of the structure of the present invention. All the equivalent changes or simple changes made according to the structure, characteristics and principle of the utility model are included in the protection scope of the utility model. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (3)
1. A coal fired power plant white smoke plume remove device which characterized in that: the system comprises a lithium bromide absorption type refrigerator (1), a flue gas condenser (2), a flue gas reheater (3), a condensation circulating pump (4), a reheating circulating pump (5), a first electric regulating valve (6), a drain pipe (7), a second electric regulating valve (8), a condensation working medium circulating pipeline (9), a reheating working medium circulating pipeline (10), a driving steam condensation water pipeline (11) and a flue (12); the condensation circulating pump (4) is arranged on a condensation working medium circulating pipeline (9), and the reheating circulating pump (5) is arranged on a reheating working medium circulating pipeline (10); the first electric regulating valve (6) is installed on a drain pipe (7), the drain pipe (7) is connected with the flue gas condenser (2), and the second electric regulating valve (8) is installed on a driving steam condensation water pipeline (11); the flue gas condenser (2) is connected with a condensing working medium circulation pipeline (9), the refrigerating end of the lithium bromide absorption refrigerator (1) is connected with the condensing working medium circulation pipeline (9), the flue gas reheater (3) is connected with a reheating working medium circulation pipeline (10), the heat dissipation end of the lithium bromide absorption refrigerator (1) is connected with the reheating working medium circulation pipeline (10), the flue gas reheater (3) is connected with a driving steam condensation water pipeline (11), and the lithium bromide absorption refrigerator (1) is connected with the driving steam condensation water pipeline (11); the flue gas condenser (2) is connected with the flue (12), and the flue gas reheater (3) is connected with the flue (12).
2. The coal fired power plant white smoke plume abatement device of claim 1, wherein: the flue gas condenser (2) is an indirect gas-liquid heat exchanger.
3. The coal fired power plant white smoke plume abatement device of claim 1, wherein: the flue gas reheater (3) is an indirect gas-liquid heat exchanger.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920346239.2U CN210373507U (en) | 2019-03-19 | 2019-03-19 | White smoke plume eliminating device of coal-fired power plant |
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| CN201920346239.2U CN210373507U (en) | 2019-03-19 | 2019-03-19 | White smoke plume eliminating device of coal-fired power plant |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990305A (en) * | 2019-03-19 | 2019-07-09 | 华电电力科学研究院有限公司 | A kind of coal-burning power plant's white plume cancellation element and working method |
| CN113566597A (en) * | 2021-08-05 | 2021-10-29 | 沈阳鑫博工业技术股份有限公司 | Water power generation system is received to aluminium hydroxide roasting furnace flue gas |
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2019
- 2019-03-19 CN CN201920346239.2U patent/CN210373507U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990305A (en) * | 2019-03-19 | 2019-07-09 | 华电电力科学研究院有限公司 | A kind of coal-burning power plant's white plume cancellation element and working method |
| CN113566597A (en) * | 2021-08-05 | 2021-10-29 | 沈阳鑫博工业技术股份有限公司 | Water power generation system is received to aluminium hydroxide roasting furnace flue gas |
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