CN210441239U - Anticorrosion flue gas whitening elimination system based on energy depth gradient utilization - Google Patents
Anticorrosion flue gas whitening elimination system based on energy depth gradient utilization Download PDFInfo
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- CN210441239U CN210441239U CN201920866529.XU CN201920866529U CN210441239U CN 210441239 U CN210441239 U CN 210441239U CN 201920866529 U CN201920866529 U CN 201920866529U CN 210441239 U CN210441239 U CN 210441239U
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 174
- 239000003546 flue gas Substances 0.000 title claims abstract description 174
- 230000002087 whitening effect Effects 0.000 title claims description 14
- 230000008030 elimination Effects 0.000 title description 5
- 238000003379 elimination reaction Methods 0.000 title description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 129
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 33
- 239000000428 dust Substances 0.000 claims abstract description 33
- 238000005260 corrosion Methods 0.000 claims abstract description 20
- 238000011010 flushing procedure Methods 0.000 claims description 26
- 239000007921 spray Substances 0.000 claims description 5
- 239000000779 smoke Substances 0.000 abstract description 24
- 238000010438 heat treatment Methods 0.000 abstract description 12
- 238000006477 desulfuration reaction Methods 0.000 abstract description 9
- 230000023556 desulfurization Effects 0.000 abstract description 9
- 230000007797 corrosion Effects 0.000 abstract description 8
- 229920002313 fluoropolymer Polymers 0.000 abstract description 8
- 239000003245 coal Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 32
- 238000005507 spraying Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 11
- 239000012717 electrostatic precipitator Substances 0.000 description 8
- 238000005265 energy consumption Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- MXWHMTNPTTVWDM-NXOFHUPFSA-N mitoguazone Chemical compound NC(N)=N\N=C(/C)\C=N\N=C(N)N MXWHMTNPTTVWDM-NXOFHUPFSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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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
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- Chimneys And Flues (AREA)
- Treating Waste Gases (AREA)
Abstract
The utility model relates to a white system of anticorrosion flue gas disappears based on energy degree of depth step utilization, include: the system comprises a flue gas cooler, an electric dust remover, an induced draft fan, a desulfurizing tower, a flue gas condenser, a variable frequency pump and a low pressure feed system; a flue system is formed among the flue gas cooler, the electric dust remover, the induced draft fan, the desulfurizing tower and the flue gas condenser; the flue gas cooler, the flue gas condenser and the low pressure feeding system form a water circulation closed loop. The utility model can reduce the temperature of the flue gas at the inlet of the electric dust collector and improve the dust collection efficiency; the water temperature at the outlet of the low-pressure heating system is increased, steam extracted by the low-pressure heater is expelled, the coal consumption is reduced, and deep and gradient utilization of energy is realized; the water content of the flue gas is reduced by reducing the temperature of the flue gas at the desulfurization outlet, so that the effect of saving water and eliminating white smoke is achieved; the flue gas condenser can improve the heat exchange efficiency by utilizing the fluoroplastic heat exchange tube, and solves the problem of desulfurization wet flue gas corrosion.
Description
Technical Field
The utility model belongs to the technical field of the white system that disappears of energy-concerving and environment-protective wet flue gas desulfurization absorption tower flue gas of thermal power plant, concretely relates to anticorrosion flue gas disappears white system based on energy degree of depth step utilizes.
Background
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be taken as an acknowledgement or any form of suggestion that this information constitutes prior art that is already known to a person skilled in the art.
At present, the limestone-gypsum wet desulphurization process is widely applied to the coal-fired power plant in China for desulphurization, the desulphurization process is mature in technology, high in desulphurization efficiency and good in system stability, but saturated wet flue gas at about 50 ℃ is discharged from an absorption tower in the wet desulphurization process, and white smoke plume can be formed. The white smoke plume is not only a visual pollution, but also gypsum rain formed by the white smoke plume can corrode a chimney and influence the surrounding living environment.
At present, the conventional methods for eliminating white smoke plume are a heating method and a cooling method. The inventors have found that current heating methods, such as: MGGH only heats up the desulfurized flue gas, which not only has higher cost, but also does not eliminate actual pollutants; existing cooling methods, such as: the slurry is cooled, so that pollutants can be removed to achieve the aim of white elimination, but the water balance of a desulfurization system is damaged, and the problem of corrosion of desulfurization flue gas to equipment still exists.
Disclosure of Invention
In order to overcome the problem, the utility model provides an anticorrosion flue gas disappears white system based on energy step utilization. The system adopts the flue gas cooler and the flue gas condenser to respectively carry out cascade recycling on sensible heat of high-temperature flue gas behind the air preheater and in front of the electric dust remover and latent heat of low-temperature flue gas behind the desulfurizing tower, on one hand, the dust removal efficiency of the electric dust remover can be improved by reducing the flue gas temperature, the moisture content of saturated wet flue gas behind the desulfurizing tower can be reduced, and the aim of eliminating white smoke is fulfilled; on the other hand, the recovered heat is utilized in a gradient manner in the low-pressure heating system, the outlet water temperature of the low-pressure heating system is increased, steam extraction of the low-pressure heater is squeezed, and coal consumption is reduced, so that the aim of saving energy is fulfilled.
In order to realize the technical purpose, the utility model discloses a technical scheme as follows:
an anti-corrosion flue gas whitening removal system based on energy cascade utilization comprises: the system comprises an air preheater, a flue gas cooler 1, an electric dust remover 2, a draught fan 3, a desulfurizing tower 4, a flue gas condenser 5, a low heater 7, a low heater 8, a low heater 9 and a low heater 10, and a flushing water tank, a pit and a chimney; air heater, gas cooler 1, electrostatic precipitator 2, draught fan 3, desulfurizing tower 4, flue gas condenser 5, chimney link to each other in proper order, flue gas condenser 5's delivery port still links to each other with gas cooler 1's water inlet, it adds 7, low 8, low 9, low 10 that add links to each other in proper order to hang down to add, and the low delivery port that adds 8 links to each other with gas cooler 1's water inlet, gas condenser 5's water inlet links to each other with the delivery port of condenser.
Different with traditional MGGH through the purpose that the intensification reaches the white smoke that disappears, this application utilizes flue gas cooler 1, flue gas condenser 5's two-stage gradient cooling setting, reduces the temperature of flue gas to 43 ~ 45 ℃ gradually and reaches the purpose that disappears the white smoke, simultaneously, at above-mentioned in-process, this application still utilizes the low temperature water that comes from the condenser as cooling medium, retrieves the heat of flue gas effectively, has reduced the holistic energy consumption of equipment.
In this application, "low plus" means: a low pressure heater.
In order to achieve the purposes of eliminating white smoke and fully utilizing the heat energy of the smoke. In some embodiments, a variable frequency water pump 6 is arranged between the flue gas condenser 5 and the condenser. The low-temperature water (30 ℃) from the condenser is heated by the flue gas condenser 5 and the flue gas cooler 1 in sequence and then is guided into the deaerator for treatment, so that the workload and the energy consumption of the low-pressure heating system are effectively reduced.
In order to improve the utilization rate of energy, the low-temperature water from the condenser is expected to be heated by the flue gas condenser 5 and then used as the inlet water of the flue gas cooler 1 for secondary heating, but because the outlet water temperature of the flue gas condenser 5 is lower (35-40 ℃), if the low-temperature water directly enters the flue gas cooler 1, the temperature of the flue gas subsequently entering the dust remover 2 is too low, the dust removal efficiency is influenced, and SO is easily generated3The acid dew point corrodes the inlet of the electric dust collector 2. Therefore, the effluent of the flue gas condenser 5 is firstly mixed with the 'two-stage low-heating partial hot water' (about 100 ℃) and then enters the flue gas cooler 1 for heat exchange, the design not only ensures the full utilization of the flue gas waste heat in the flue gas cooler 1 and the flue gas condenser 5 and achieves the aim of white elimination, but also cannot influence the subsequent dust removal and desulfurization efficiency, and meanwhile, the water (120-125 ℃) heated by the flue gas cooler 1 can also flow back to the deaerator for subsequent treatment, so that the low-heating energy consumption is reduced, and the energy is saved. In some embodiments, there is a point of intersection between the line i "between the outlet of the lower heater 8 and the inlet of the flue gas cooler 1" and the line ii "between the outlet of the flue gas condenser 5 and the inlet of the flue gas cooler 1".
In order to ensure that the outlet water of the flue gas condenser 5 is effectively mixed with the 'partial hot water after the two-stage low heating', in some embodiments, a variable frequency water pump 6 is arranged between the intersection point and the low heating 8, so that the inlet water of the flue gas cooler 1 is ensured to have a temperature (about 70 ℃) while the two are fully mixed.
In some embodiments, the water outlet of the flue gas cooler 1 is further connected to the water inlet of the low heater 10, and water which absorbs heat of flue gas in the flue gas cooler is sent to the low heater 10 to be heated again, and then is guided into the deaerator to be subsequently treated.
In some embodiments, the low plus 10 is connected to a deaerator. Compared with the original four low pressure systems, the steam turbine has the advantages that water from the condenser is reduced, and the steam consumption of the steam condenser is correspondingly reduced, so that the high-quality steam of the steam turbine is squeezed to do work, the coal consumption is reduced, and the energy gradient utilization is realized.
In some embodiments, the flushing water tank is respectively connected with the water inlets of the spray devices of the desulfurizing tower 4 and the flue gas condenser 5.
In some embodiments, the discharge ports (condensate and spray) of the flue gas condenser 5 are connected to a pit.
The beneficial effects of the utility model reside in that:
(1) the utility model can reduce the temperature of the flue gas at the inlet of the electric dust collector and improve the dust collection efficiency; the water temperature at the outlet of the low-pressure heating system is increased, steam extracted by the low-pressure heater is expelled, the coal consumption is reduced, and deep and gradient utilization of energy is realized; the water content of the flue gas is reduced by reducing the temperature of the flue gas at the desulfurization outlet, so that the effect of saving water and eliminating white smoke is achieved; the flue gas condenser can improve the heat exchange efficiency by utilizing the fluoroplastic heat exchange tube, and solves the problem of desulfurization wet flue gas corrosion.
(2) The device has the advantages of simple structure, low energy consumption, universality and easiness in large-scale production.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic view of a system according to embodiment 1;
wherein: 1-a flue gas cooler; 2-an electric dust remover; 3-a draught fan; 4-a desulfurizing tower; 5-a flue gas condenser; 6-variable frequency pump; 7- #8 low addition; 8- #7 low addition; 9- #6 low addition; low addition of 10- # 5; 11-flushing water pump.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The examples do not specify particular techniques or conditions, and are performed according to the techniques or conditions described in the literature in the art or according to the product specifications. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.
As described in the background, the method aims at solving the problems of high cost and serious corrosion to equipment of the conventional method for eliminating the white smoke plume. Therefore, the utility model provides an anticorrosion flue gas white elimination system based on energy step utilization, include: the system comprises a flue gas cooler, an electric dust remover, an induced draft fan, a desulfurizing tower, a flue gas condenser, a variable frequency pump and a low pressure feed system; a flue system is formed among the flue gas cooler, the electric dust remover, the induced draft fan, the desulfurizing tower and the flue gas condenser; the flue gas cooler, the flue gas condenser and the low pressure feeding system form a water circulation closed loop; the desulfurizing tower and the flue gas condenser respectively form a spraying passage of spraying water with the flushing water tank; the condensed water discharge system (namely, the water discharge ports of the condensed water and the spray water) of the flue gas condenser is connected with the desulfurization pit.
The flue gas cooler is a metal heat exchanger, and is formed by arranging H-shaped finned tubes made of wear-resistant ND steel materials with low-temperature corrosion resistance in an in-line mode.
The flue gas condenser is a fluoroplastic heat exchanger, adopts a fluoroplastic U-shaped heat exchange tube, and is provided with a spraying and flushing system and a condensed water discharge system.
Further preferably, the fluoroplastic heat exchange tube has the advantages of good wear resistance and corrosion resistance, smooth surface, difficulty in ash adhesion, long service life and high heat exchange efficiency.
Two variable frequency pumps are arranged on a closed loop formed by the flue gas cooler, the flue gas condenser and the low pressure feeding system, and one variable frequency pump is arranged in front of the flue gas condenser and is used for conveying low-temperature water at the outlet of the condenser to the flue gas condenser; and the other set is arranged in front of the flue gas cooler and used for supplementing water with proper water temperature in the low-pressure feeding system into outlet water of the flue gas condenser and conveying the water to the flue gas cooler.
And the desulfurizing tower and the flue gas condenser are respectively provided with a flushing water pump on a spraying passage forming spraying water with the flushing water tank.
An operation method of an anti-corrosion smoke whitening system based on energy cascade utilization comprises the following steps:
setting the smoke exhaust temperature of a chimney to a preset value, and eliminating white smoke;
setting the inlet flue gas temperature of the electric dust remover to a preset value to realize low-temperature electric dust removal;
the water temperature at the inlet of the flue gas cooler is set to a preset value, so that the cascade utilization of the recovered energy is realized;
the flue gas condenser is flushed and ash-removed by a spraying system every time when the flue gas condenser operates for a period of time;
when the unit operation load changes, the water quantity is adjusted through the variable frequency water pump, and the heat exchange adjustment of the flue gas cooler and the flue gas condenser is realized.
The scheme of the application is described by specific examples below.
Example 1:
in this embodiment, taking a 300MW generator set as an example, as shown in fig. 1, an anti-corrosion smoke whitening system based on energy cascade utilization includes: the device comprises a flue gas cooler 1, an electric dust remover 2, an induced draft fan 3, a desulfurizing tower 4, a flue gas condenser 5, a variable frequency pump 6, a low-load port 7 of #8, a low-load port 8 of #7, a low-load port 9 of #6, a low-load port 10 of #5, an air preheater, a flushing water tank, a pit and a chimney.
Wherein, a flue gas passage is formed among the flue gas cooler 1, the electric dust remover 2, the induced draft fan 3, the desulfurizing tower 4 and the flue gas condenser 5, and flue gas passes through the flue gas cooler 1, the electric dust remover 2, the induced draft fan 3, the desulfurizing tower 4 and the flue gas condenser 5 in sequence after coming out of the air preheater and finally enters a chimney for emission; the flue gas cooler comprises a flue gas condenser 5, a variable frequency water pump 6, a flue gas cooler 1, a low water-adding port 7 of a #8, a low water-adding port 8 of a #7, a low water-adding port 9 of a #6 and a low water-adding port 10 of a #5 to form a closed circulation water path, the variable frequency water pump 6 conveys low-temperature water after the condenser to the flue gas condenser 5 to absorb latent heat of flue gas, then the low-temperature water is mixed with water after the low water-adding port 7 of the #7 and conveyed to the flue gas cooler 1, the water is heated by the flue gas cooler 1; the flushing water tank, the flushing water pump 11, the spraying system of the flue gas condenser 5 and the pit form a spraying passage, flushing water enters the spraying system of the flue gas condenser 5 from the flushing water tank through the flushing water pump 11, and after flushing is finished, the flushing water flows into the pit from the drainage port of condensed water and spraying water to be discharged.
The flue gas cooler 1 is a metal heat exchanger, and is formed by arranging H-shaped finned tubes made of wear-resistant ND steel materials with low-temperature corrosion resistance in an in-line mode.
The flue gas condenser 5 is a fluoroplastic heat exchanger, adopts a fluoroplastic U-shaped heat exchange tube, and is provided with a spraying and flushing system and a condensed water discharge system.
The fluoroplastic heat exchange tube has the advantages of good wear resistance and corrosion resistance, smooth surface, difficulty in ash adhesion, long service life and high heat exchange efficiency.
An operation method of an anti-corrosion smoke whitening system based on energy cascade utilization comprises the following steps:
the circulating water quantity is adjusted according to the temperature (smoke exhaust temperature) of the smoke at the outlet of the smoke condenser 5, and the circulating water quantity can be adjusted through a variable frequency water pump 6; according to the temperature of the smoke at the outlet of the smoke cooler (the temperature of the smoke at the inlet of the dust remover), the amount of supplementary water from the No. 7 low water heater 8 is adjusted and can be adjusted by the variable frequency water pump 6;
the flue gas condenser 5 is flushed and ash-removed by a spraying system every time the flue gas condenser operates for a period of time.
After the system is operated, the temperature of smoke at the inlet of the electric dust collector 2 can be reduced to 90-95 ℃ from 140-145 ℃; the water temperature at the outlet of the flue gas cooler 1 can be increased to 120-125 ℃; the temperature of the flue gas at the outlet of the flue gas condenser 5 can be reduced from about 50 ℃ to 43-45 ℃, and the temperature of the water at the outlet of the flue gas condenser 5 can be increased to 35-40 ℃.
Example 2
An anti-corrosion flue gas whitening removal system based on energy cascade utilization comprises: the system comprises an air preheater, a flue gas cooler 1, an electric dust remover 2, a draught fan 3, a desulfurizing tower 4, a flue gas condenser 5, a low heater 7, a low heater 8, a low heater 9 and a low heater 10, and a flushing water tank, a pit and a chimney; air heater, gas cooler 1, electrostatic precipitator 2, draught fan 3, desulfurizing tower 4, flue gas condenser 5, chimney link to each other in proper order, flue gas condenser 5's delivery port still links to each other with gas cooler 1's water inlet, it adds 7, low 8, low 9, low 10 that add links to each other in proper order to hang down to add, and the low delivery port that adds 8 links to each other with gas cooler 1's water inlet, gas condenser 5's water inlet links to each other with the delivery port of condenser.
Example 3
An anti-corrosion flue gas whitening removal system based on energy cascade utilization comprises: the system comprises an air preheater, a flue gas cooler 1, an electric dust remover 2, a draught fan 3, a desulfurizing tower 4, a flue gas condenser 5, a low heater 7, a low heater 8, a low heater 9 and a low heater 10, and a flushing water tank, a pit and a chimney; air heater, gas cooler 1, electrostatic precipitator 2, draught fan 3, desulfurizing tower 4, flue gas condenser 5, chimney link to each other in proper order, flue gas condenser 5's delivery port still links to each other with gas cooler 1's water inlet, it adds 7, low 8, low 9, low 10 that add links to each other in proper order to hang down to add, and the low delivery port that adds 8 links to each other with gas cooler 1's water inlet, gas condenser 5's water inlet links to each other with the delivery port of condenser.
And a variable frequency water pump 6 is arranged between the flue gas condenser 5 and the condenser.
Example 4
An anti-corrosion flue gas whitening removal system based on energy cascade utilization comprises: the system comprises an air preheater, a flue gas cooler 1, an electric dust remover 2, a draught fan 3, a desulfurizing tower 4, a flue gas condenser 5, a low heater 7, a low heater 8, a low heater 9 and a low heater 10, and a flushing water tank, a pit and a chimney; air heater, gas cooler 1, electrostatic precipitator 2, draught fan 3, desulfurizing tower 4, flue gas condenser 5, chimney link to each other in proper order, flue gas condenser 5's delivery port still links to each other with gas cooler 1's water inlet, it adds 7, low 8, low 9, low 10 that add links to each other in proper order to hang down to add, and the low delivery port that adds 8 links to each other with gas cooler 1's water inlet, gas condenser 5's water inlet links to each other with the delivery port of condenser.
An intersection point exists between a pipeline I between the water outlet of the low heater 8 and the water inlet of the flue gas cooler 1 and a pipeline II between the water outlet of the flue gas condenser 5 and the water inlet of the flue gas cooler 1.
Example 5
An anti-corrosion flue gas whitening removal system based on energy cascade utilization comprises: the system comprises an air preheater, a flue gas cooler 1, an electric dust remover 2, a draught fan 3, a desulfurizing tower 4, a flue gas condenser 5, a low heater 7, a low heater 8, a low heater 9 and a low heater 10, and a flushing water tank, a pit and a chimney; air heater, gas cooler 1, electrostatic precipitator 2, draught fan 3, desulfurizing tower 4, flue gas condenser 5, chimney link to each other in proper order, flue gas condenser 5's delivery port still links to each other with gas cooler 1's water inlet, it adds 7, low 8, low 9, low 10 that add links to each other in proper order to hang down to add, and the low delivery port that adds 8 links to each other with gas cooler 1's water inlet, gas condenser 5's water inlet links to each other with the delivery port of condenser.
And a variable frequency water pump 6 is arranged between the intersection and the low pressure heater 8.
Example 6
An anti-corrosion flue gas whitening removal system based on energy cascade utilization comprises: the system comprises an air preheater, a flue gas cooler 1, an electric dust remover 2, a draught fan 3, a desulfurizing tower 4, a flue gas condenser 5, a low heater 7, a low heater 8, a low heater 9 and a low heater 10, and a flushing water tank, a pit and a chimney; air heater, gas cooler 1, electrostatic precipitator 2, draught fan 3, desulfurizing tower 4, flue gas condenser 5, chimney link to each other in proper order, flue gas condenser 5's delivery port still links to each other with gas cooler 1's water inlet, it adds 7, low 8, low 9, low 10 that add links to each other in proper order to hang down to add, and the low delivery port that adds 8 links to each other with gas cooler 1's water inlet, gas condenser 5's water inlet links to each other with the delivery port of condenser.
The low-pressure heater 10 is connected with a deaerator.
Example 7
An anti-corrosion flue gas whitening removal system based on energy cascade utilization comprises: the system comprises an air preheater, a flue gas cooler 1, an electric dust remover 2, a draught fan 3, a desulfurizing tower 4, a flue gas condenser 5, a low heater 7, a low heater 8, a low heater 9 and a low heater 10, and a flushing water tank, a pit and a chimney; air heater, gas cooler 1, electrostatic precipitator 2, draught fan 3, desulfurizing tower 4, flue gas condenser 5, chimney link to each other in proper order, flue gas condenser 5's delivery port still links to each other with gas cooler 1's water inlet, it adds 7, low 8, low 9, low 10 that add links to each other in proper order to hang down to add, and the low delivery port that adds 8 links to each other with gas cooler 1's water inlet, gas condenser 5's water inlet links to each other with the delivery port of condenser.
And the flushing water tank is respectively connected with the water inlets of the spraying devices of the desulfurizing tower 4 and the flue gas condenser 5.
Example 8
An anti-corrosion flue gas whitening removal system based on energy cascade utilization comprises: the system comprises an air preheater, a flue gas cooler 1, an electric dust remover 2, a draught fan 3, a desulfurizing tower 4, a flue gas condenser 5, a low heater 7, a low heater 8, a low heater 9 and a low heater 10, and a flushing water tank, a pit and a chimney; air heater, gas cooler 1, electrostatic precipitator 2, draught fan 3, desulfurizing tower 4, flue gas condenser 5, chimney link to each other in proper order, flue gas condenser 5's delivery port still links to each other with gas cooler 1's water inlet, it adds 7, low 8, low 9, low 10 that add links to each other in proper order to hang down to add, and the low delivery port that adds 8 links to each other with gas cooler 1's water inlet, gas condenser 5's water inlet links to each other with the delivery port of condenser.
And a water outlet (condensed water and spray water) of the flue gas condenser 5 is connected with the pit.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that the technical solutions described in the foregoing embodiments can be modified or partially replaced by equivalent solutions. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.
Claims (8)
1. An anti-corrosion flue gas whitening removal system based on energy deep cascade utilization comprises: the device comprises an air preheater, a flue gas cooler (1), an electric dust remover (2), a draught fan (3), a desulfurizing tower (4), a flue gas condenser (5), #8 low plus (7), #7 low plus (8), #6 low plus (9), #5 low plus (10), a flushing water tank, a pit and a chimney; the device is characterized in that the air preheater, the flue gas cooler (1), the electric dust remover (2), the induced draft fan (3), the desulfurizing tower (4), the flue gas condenser (5) and the chimney are sequentially connected, the water outlet of the flue gas condenser (5) is also connected with the water inlet of the flue gas cooler (1), the #8 is low, (7) is low, (8), (6) is low, (9) and (5) is low, (10) is low, the water outlet of the #7 is low, (8) is connected with the water inlet of the flue gas cooler (1), and the water inlet of the flue gas condenser (5) is connected with the water outlet of the condenser.
2. The system according to claim 1, characterized in that a variable frequency water pump (6) is arranged between the flue gas condenser (5) and the condenser.
3. The system as claimed in claim 1, characterized in that there is an intersection point in the line i between the outlet of the "# 7 low plus (8) and the inlet of the flue gas cooler (1) and in the line ii between the outlet of the flue gas condenser (5) and the inlet of the flue gas cooler (1).
4. The system according to claim 3, characterized in that a variable frequency water pump (6) is arranged between the intersection and the #7 low plus (8).
5. The system according to claim 1, characterized in that the water outlet of the flue gas cooler (1) is also connected to the water inlet of the #5 low plus (10).
6. The system of claim 1, wherein the #5 low plus (10) is connected to a deaerator.
7. The system according to claim 1, characterized in that the flushing water tank is connected with the water inlet of the spray device of the desulfurizing tower (4) and the flue gas condenser (5), respectively.
8. The system according to claim 1, characterized in that the discharge opening of the flue gas condenser (5) is connected to a pit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920866529.XU CN210441239U (en) | 2019-06-06 | 2019-06-06 | Anticorrosion flue gas whitening elimination system based on energy depth gradient utilization |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920866529.XU CN210441239U (en) | 2019-06-06 | 2019-06-06 | Anticorrosion flue gas whitening elimination system based on energy depth gradient utilization |
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| CN210441239U true CN210441239U (en) | 2020-05-01 |
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Address after: 250101 Huate building, Shanda Science Park, Yingxiu Road, high tech Zone, Jinan City, Shandong Province Patentee after: Shandong Huate Environmental Protection Technology Co.,Ltd. Address before: 250101 Huate building, Shanda Science Park, Yingxiu Road, high tech Zone, Jinan City, Shandong Province Patentee before: Shandong Shanda Huate Environmental Protection Technology Co.,Ltd. |
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