CN211290133U - Coal fired power plant flue gas white elimination system - Google Patents
Coal fired power plant flue gas white elimination system Download PDFInfo
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- CN211290133U CN211290133U CN201921630004.2U CN201921630004U CN211290133U CN 211290133 U CN211290133 U CN 211290133U CN 201921630004 U CN201921630004 U CN 201921630004U CN 211290133 U CN211290133 U CN 211290133U
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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
Abstract
The utility model discloses a coal fired power plant flue gas white system that disappears belongs to coal fired power plant smoke plume and administers the field. The utility model discloses an air preheater bypass system, flue gas condensation-reheating system, condensate heating system and heat medium water circulating system, retrieve the flue gas heat through setting up air preheater bypass flue and utilizing the flue gas cooler on the bypass flue, realize the promotion of flue gas temperature behind the flue gas condenser with the closed circulation of heat medium water, the heating of steam turbine condensate, the reduction of dust remover entry flue gas temperature, it is high to have system flexibility, flue gas reheater export flue gas temperature control range is wide, flue gas advantage such as effectual that disappears, can solve the problem that the dust remover entry can't arrange the low temperature economizer under the special circumstances, better application prospect has.
Description
Technical Field
The utility model relates to a coal fired power plant smoke plume administers the field, concretely relates to coal fired power plant flue gas white system that disappears.
Background
At present, most domestic coal-fired power plants adopt limestone-gypsum wet desulphurization devices to carry out SO2The purified flue gas after desulfurization is in a wet saturation state, the temperature is 45-55 ℃, a large amount of water vapor is contained, and the flue gas can generate a 'white smoke' phenomenon at a chimney outlet after being discharged by a wet chimney. Aiming at the treatment of white smoke, different technical measures are adopted in different areas, and a direct smoke reheating method, a condensation dehumidification method and a condensation-reheating method are mainly adopted. Because the smoke condensation-reheating method has good whitening effect, solid particles, soluble salt, condensable particles and the like can be removed in a synergistic manner, and the method has a good application prospect. The common condensing-reheating process is designed by combining MGGH with a flue gas condenser, and a low temperature is arranged in an inlet flue of a dust remover or an original flue of a desulfurizing towerThe economizer is characterized in that a flue gas reheater is arranged in a clean flue after desulfurization, a flue gas condenser is located between a desulfurization tower and the flue gas reheater, the flue gas condenser is firstly utilized for cooling and dehumidifying, and then the flue gas waste heat at the outlet of an air preheater is utilized for heating the clean flue gas at the outlet of the flue gas condenser so as to improve the unsaturation degree of the clean flue gas and achieve the aim of white elimination.
A low-temperature economizer waste heat utilization device is additionally arranged on an inlet flue of the dust remover, and strict requirements are set on spatial arrangement. Some units have the problems that the space between the air preheater and the dust remover is narrow, the flue at the front end of the dust remover is not straight, the capacity of increasing the bearing resistance of the fan is limited, and the like, and the low-temperature economizer cannot be arranged. Although the low-temperature economizer arranged in the original flue of the desulfurizing tower can realize the utilization of the waste heat of the flue gas, the control of the inlet flue gas temperature of the front-end dust remover is not facilitated, and the performance of the dust removing equipment is influenced. Still some units cause the exhaust gas temperature to reach 160~170 ℃ because the air preheater designs for oneself slightly littleer, or air preheater long-term operation and appear more serious deposition, jam and corruption scheduling problem, will produce more adverse effect to the dust remover (including electrostatic precipitator, bag dust remover) and the normal operating of desulfurization system in rear portion. For a unit with higher exhaust gas temperature, not only can a low-temperature economizer be arranged on an inlet flue of a dust remover or an original flue of a desulfurizing tower to recover the waste heat of the exhaust gas, but also the technology that a flue gas cooler is arranged on a bypass flue of an air preheater can be considered to reduce the temperature of the exhaust gas at the inlet of the dust remover and fully utilize the recovered heat, such as being used for heating the condensed water of a steam turbine and improving the temperature of the purified exhaust gas after desulfurization.
SUMMERY OF THE UTILITY MODEL
The utility model aims at there being exhaust gas temperature higher to some coal fired power plants at present, the unable rational arrangement flue gas waste heat utilization equipment is used for the promotion of clean flue gas temperature and the scope of clean flue gas temperature promotion after the desulfurization narrower in the flue gas disappears white the administering, and the poor scheduling problem of flexibility that the flue gas temperature was adjusted has provided a coal fired power plant flue gas system of disappearing white, specifically as follows:
the utility model provides a coal fired power plant flue gas white elimination system which characterized in that: the system comprises an air preheater bypass system, a flue gas condensation-reheating system, a condensed water heating system and a heating medium water circulating system; the air preheater bypass system comprises an air preheater bypass inlet flue gas baffle, a flue gas cooler and an air preheater bypass outlet flue gas baffle, wherein a chimney of the air preheater bypass inlet flue gas baffle is arranged at the initial end of an air preheater bypass flue, the flue gas cooler is arranged at the downstream of the air preheater bypass inlet flue gas baffle, the air preheater bypass outlet flue gas baffle is arranged at the tail end of the air preheater bypass flue, the initial end and the tail end of the air preheater bypass flue are respectively communicated with a flue gas outlet of an SCR flue gas denitration device and a flue gas inlet of a dust remover, the flue gas outlet of the SCR flue gas denitration device is also connected with the air preheater, the air preheater is connected with the dust remover, and the dust remover is connected with a desulfurization tower; the flue gas condensing-reheating system comprises a flue gas condenser and a flue gas reheater, wherein the flue gas condenser is arranged in a clean flue behind the desulfurizing tower, and the flue gas reheater is arranged in a flue between the flue gas condenser and a chimney; the condensed water heating system comprises a condenser, a first low-pressure heater, a second low-pressure heater, a plate heat exchanger and a third low-pressure heater, wherein the condenser is arranged at the upstream of the first low-pressure heater, the second low-pressure heater is arranged at the downstream of the first low-pressure heater, a condensed water inlet pipe of the plate heat exchanger is communicated with a water outlet branch pipe of the second low-pressure heater, the third low-pressure heater is arranged at the downstream of the second low-pressure heater, and the water outlet branch pipe of the third low-pressure heater is communicated with a condensed water outlet pipe of the plate heat exchanger; the heat medium water circulation system comprises a heat medium water circulation pump, a heat medium water main pipeline electric valve, a flue gas reheater inlet heat medium water pipeline electric valve and a plate heat exchanger inlet heat medium water pipeline electric valve, the heat medium water circulation pump and the heat medium water main pipeline electric valve are arranged on the heat medium water main pipeline, the heat medium water main pipeline electric valve is located at the downstream of the heat medium water circulation pump, the flue gas reheater inlet heat medium water pipeline electric valve is arranged at the starting end of an inlet heat medium water pipeline of the flue gas reheater, the plate heat exchanger inlet heat medium water pipeline electric valve is arranged at the starting end of the inlet heat medium water pipeline of the plate heat exchanger, and a water outlet of the flue gas cooler is communicated with the starting end of the inlet heat medium water pipeline of the flue gas reheater and the starting end of the inlet heat medium.
Further, in the air preheater bypass system, the flue gas baffle at the inlet of the air preheater bypass and the flue gas baffle at the outlet of the air preheater bypass can realize the adjustment of different opening degrees; and the off-line maintenance of the flue gas cooler can be realized by closing the flue gas baffle at the bypass inlet of the air preheater and the flue gas baffle at the bypass outlet of the air preheater.
Furthermore, the heat exchange tubes in the flue gas cooler are H-shaped finned tubes, the materials of the H-shaped finned tubes are 20G or ND steel, and a steam soot blower is arranged to take certain anti-abrasion measures; by reasonably designing the opening range of the flue gas bypass baffle of the air preheater and optimizing the type selection of the flue gas cooler, the temperature of the flue gas at the outlet of the bypass flue of the air preheater is basically consistent with the temperature of the flue gas at the outlet of the air preheater.
Further, in a flue gas condensation-reheating system, the flue gas condenser exchanges heat with saturated wet flue gas by taking water as a cold source, cooling water adopts closed circulation, a heat exchange pipe adopts a light pipe type, and the heat exchange pipe is made of 2205 dual-phase steel, fluoroplastic, a titanium pipe, fluoroplastic steel and the like; the heat exchange tube in the flue gas reheater adopts a light tube or a fin tube, and the material of the heat exchange tube is 2205 dual-phase steel, 316L, fluoroplastic and the like.
Furthermore, in the condensed water heating system, condensed water flows through a middle pipe of the plate heat exchanger, and a heat exchange pipe is a U-shaped pipe and is made of 304 steel; the condensed water entering the plate heat exchanger is not limited to be led out from the outlet of the second low-pressure heater and then is merged with the condensed water at the outlet of the third low-pressure heater, and the leading-out and merging forms of the condensed water of the low-pressure heater are diversified.
Furthermore, the heat medium water circulation system is also provided with a heat medium water tank and a water replenishing pump for maintaining the normal operation of the heat medium water circulation system; the heat medium water circulating pump is used for two times and one standby, and a centrifugal pump is selected; the electric valve of the heating medium water main pipeline, the electric valve of the flue gas reheater inlet heating medium water pipeline and the electric valve of the plate heat exchanger inlet heating medium water pipeline realize the adjustment of different opening degrees and are used for adjusting and distributing the flow of heating medium water of a circulating loop; the electric valves of the two main heating medium water pipelines are positioned at the outlet of the heating medium water circulating pump, and the opening degrees of the electric valves of the two main heating medium water pipelines are kept consistent in operation.
Compared with the prior art, the utility model, have following advantage and effect: by the system in the utility model, the effective elimination of the 'white smoke' after the wet desulphurization of the coal-fired power plant can be realized, the smoke temperature at the inlet of the dust remover can be effectively reduced, and the circulating water quantity and the flow distribution of the heating medium water can be flexibly controlled; the condensation water plate type heat exchanger is utilized to realize the effective utilization of the waste heat of the bypass flue gas of the air preheater; the arrangement of the air preheater bypass system is beneficial to solving the actual problem that a low-temperature economizer cannot be arranged at the inlet of the dust remover in the flue gas whitening project, the arrangement position of the flue gas cooler is more flexible, and the system has a better application prospect.
Through the smoke whitening system of the bituminous coal power plant, the problem of 'white smoke' caused by emission of a wet chimney of the coal-fired power plant can be solved, the smoke whitening effect is good, the flexibility of the system is high, the full utilization of waste heat is realized, the smoke temperature at the inlets of a dust remover and a desulfurizing tower can be effectively reduced, the performance of a dust removing and desulfurizing system is improved, and the smoke whitening system has positive significance for establishing a good environment-friendly image for enterprises.
Drawings
Fig. 1 is a schematic diagram of a system (parallel mode) according to an embodiment of the present invention.
Fig. 2 is a system diagram (series mode one) of an embodiment of the present invention.
Fig. 3 is a schematic diagram of a system according to an embodiment of the present invention (series mode two).
In the figure: the system comprises an air preheater bypass inlet flue gas baffle 1, a flue gas cooler 2, an air preheater bypass outlet flue gas baffle 3, a flue gas condenser 4, a flue gas reheater 5, a condenser 6, a second low-pressure heater 7, a plate heat exchanger 8, a third low-pressure heater 9, a heat medium water circulating pump 10, a heat medium water main pipeline electric valve 11, a flue gas reheater inlet heat medium water pipeline electric valve 12, a plate heat exchanger inlet heat medium water pipeline electric valve 13, a first low-pressure heater 14, an SCR flue gas denitration device 15, an air preheater 16, a dust remover 17, a desulfurizing tower 18 and a chimney 19.
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.
Referring to fig. 1 to 3, the flue gas whitening reduction system of the coal-fired power plant in the embodiment includes an air preheater bypass system, a flue gas condensing-reheating system, a condensed water heating system and a heat medium water circulation system; the air preheater bypass system comprises an air preheater bypass inlet flue gas baffle 1, a flue gas cooler 2 and an air preheater bypass outlet flue gas baffle 3, a chimney of the air preheater bypass inlet flue gas baffle 1 is arranged at the initial end of an air preheater bypass flue, the flue gas cooler 2 is arranged at the downstream of the air preheater bypass inlet flue gas baffle 1, the air preheater bypass outlet flue gas baffle 3 is arranged at the tail end of the air preheater bypass flue, the initial end and the tail end of the air preheater bypass flue are respectively communicated with a flue gas outlet of an SCR flue gas denitration device 15 and a flue gas inlet of a dust remover 17, the flue gas outlet of the SCR flue gas denitration device 15 is also connected with an air preheater 16, the air preheater 16 is connected with the dust remover 17, and the dust remover 17 is connected with a desulfurization tower 18; the flue gas condensation-reheating system comprises a flue gas condenser 4 and a flue gas reheater 5, wherein the flue gas condenser 4 is arranged in a clean flue behind the desulfurizing tower 18, and the flue gas reheater 5 is arranged in a flue between the flue gas condenser 4 and a chimney 19; the condensed water heating system comprises a condenser 6, a first low-pressure heater 14, a second low-pressure heater 7, a plate heat exchanger 8 and a third low-pressure heater 9, wherein the condenser 6 is arranged at the upstream of the first low-pressure heater 14, the second low-pressure heater 7 is arranged at the downstream of the first low-pressure heater 14, a condensed water inlet pipe of the plate heat exchanger 8 is communicated with a water outlet branch pipe of the second low-pressure heater 7, the third low-pressure heater 9 is arranged at the downstream of the second low-pressure heater 7, and the water outlet branch pipe of the third low-pressure heater 9 is communicated with a condensed water outlet pipe of the plate heat exchanger 8; the heat medium water circulation system comprises a heat medium water circulation pump 10, a heat medium water main pipeline electric valve 11, a flue gas reheater inlet heat medium water pipeline electric valve 12 and a plate heat exchanger inlet heat medium water pipeline electric valve 13, wherein the heat medium water circulation pump 10 and the heat medium water main pipeline electric valve 11 are arranged on a heat medium water main pipeline, the heat medium water main pipeline electric valve 11 is positioned at the downstream of the heat medium water circulation pump 10, the flue gas reheater inlet heat medium water pipeline electric valve 12 is arranged at the starting end of an inlet heat medium water pipeline of the flue gas reheater 5, the plate heat exchanger inlet heat medium water pipeline electric valve 13 is arranged at the starting end of an inlet heat medium water pipeline of the plate heat exchanger 8, and a water outlet of the flue gas cooler 2 is communicated with the starting end of the inlet heat medium water pipeline of the flue gas reheater 5 and the starting end.
In the embodiment, in the air preheater bypass system, the air preheater bypass inlet flue gas baffle 1 and the air preheater bypass outlet flue gas baffle 3 can realize the adjustment of different opening degrees; and the off-line maintenance of the flue gas cooler 2 can be realized by closing the flue gas baffle plate 1 at the bypass inlet of the air preheater and the flue gas baffle plate 3 at the bypass outlet of the air preheater.
In the embodiment, the heat exchange tubes in the flue gas cooler 2 are H-shaped finned tubes, the materials of the H-shaped finned tubes are 20G or ND steel, and a steam soot blower is arranged to take certain anti-abrasion measures.
In the embodiment, in the flue gas condensation-reheating system, the flue gas condenser 4 uses water as a cold source to exchange heat with saturated wet flue gas, cooling water adopts closed circulation, a heat exchange pipe adopts a light pipe type, and the heat exchange pipe is made of 2205 dual-phase steel, fluoroplastic, a titanium pipe, fluoroplastic steel and the like; the heat exchange tubes in the flue gas reheater 5 are light tubes or fin tubes, and the materials of the heat exchange tubes are 2205 dual-phase steel, 316L, fluoroplastic and the like.
In the embodiment, in the condensed water heating system, condensed water flows through a pipe in the plate heat exchanger 8, the heat exchange pipe is a U-shaped pipe, and the material of the U-shaped pipe is 304 steel; the extraction and collection modes of the low-pressure heater condensed water have diversity.
In this embodiment, the heat medium water circulation system is further provided with a heat medium water tank and a water replenishing pump for maintaining the normal operation of the heat medium water circulation system; the heating medium water circulating pump 10 is used for two times and one standby, and a centrifugal pump is selected; the electric valve 11 of the heating medium water main pipeline, the electric valve 12 of the flue gas reheater inlet heating medium water pipeline and the electric valve 13 of the plate heat exchanger inlet heating medium water pipeline realize the adjustment of different opening degrees and are used for adjusting and distributing the flow of the heating medium water of the circulation loop; the electric valve 11 of the heating medium water main pipeline is positioned at the outlet of the heating medium water circulating pump 10, and the opening degrees of the two electric valves 11 of the heating medium water main pipeline are kept consistent in operation.
The flue gas whitening method of the flue gas whitening system of the coal-fired power plant comprises the following steps: most of the flue gas treated by the SCR flue gas denitration device 15 enters an air preheater 16 to heat primary air and secondary air of a boiler, a small part of the flue gas flows through a flue gas baffle plate 1 at a bypass inlet of the air preheater and then enters a flue gas cooler 2 to be cooled, and the flue gas cooled by heating medium water flows through a flue gas baffle plate 3 at a bypass outlet of the air preheater and is merged with the flue gas at an outlet of the air preheater 16 to enter a dust remover 17 and a desulfurization tower 18; the saturated wet flue gas at the outlet of the desulfurizing tower 18 is subjected to condensation and dehumidification treatment in the flue gas condenser 4, wherein water vapor is separated out in the form of condensed water, the relative humidity of the flue gas is still 100%, but the absolute moisture content is reduced to a certain extent, the flue gas leaving the flue gas condenser 4 enters the flue gas reheater 5, is heated by heating medium water to raise the temperature, the relative humidity of the flue gas is reduced, and the flue gas in an unsaturated state is discharged into the atmosphere through a chimney 19 to realize the elimination of 'white smoke'; when reaching the white mesh of disappearing, in order to make full use of air preheater bypass flue's waste heat, draw forth a hot media water from flue gas cooler 2 and heat the steam turbine condensate water to squeeze low pressure feed water heater extraction steam, specific flow is: conveying condensed water from the condenser 6 to the low-pressure heater through a condensed water pump, leading out a strand of condensed water from an outlet of the second low-pressure heater 7 to enter a plate heat exchanger 8, heating the condensed water in a water-water heat exchange mode to raise the temperature, and returning the heated condensed water to an outlet of the third low-pressure heater 9 and entering a next-stage low-pressure heater; the operation of the whole flue gas white elimination system is realized through the closed circulation of the heat medium water in the pipeline, the heat medium water is cooled by the flue gas reheater 5 and the plate heat exchanger 8, then is converged and enters a heat medium water main pipeline, is conveyed by a heat medium water circulating pump 10, controls the pipeline circulation flow through a heat medium water main pipeline electric valve 11, and combines the opening adjustment of an air preheater bypass inlet flue gas baffle 1 to control the outlet flue gas temperature of the flue gas cooler 2 at a reasonable level.
The flue gas reheater 5 and the plate heat exchanger 8 are arranged in parallel or in series.
When the flue gas reheater 5 and the plate heat exchanger 8 are connected in parallel, as shown in fig. 1, the temperature of the heat medium water rises through the heating of the flue gas cooler 2, and the heat medium water is divided into two branches, wherein one branch of the heat medium water enters the flue gas reheater 5 through the control of the electric valve 12 of the inlet heat medium water pipeline of the flue gas reheater, the other branch of the heat medium water enters the plate heat exchanger 8 through the control of the electric valve 13 of the inlet heat medium water pipeline of the plate heat exchanger, the flow rates of the two branches are distributed in a coordinated manner, the heat exchange requirements of the plate heat exchanger 8 and the.
When the flue gas reheater 5 and the plate heat exchanger 8 are connected in series, as shown in fig. 2 and 3, the temperature of the heat medium water is increased by heating the flue gas cooler 2, and the heat medium water enters the flue gas reheater 5 and the plate heat exchanger 8, so that the heat exchange requirements of the plate heat exchanger 8 and the flue gas reheater 5 are met, and the heat medium water circularly flows.
Although the present invention has been described with reference to the above embodiments, it should not be construed as being limited to the scope of the present invention, and any modifications made by those skilled in the art without departing from the spirit and scope of the present invention should be construed as being included in the following claims.
Claims (4)
1. The utility model provides a coal fired power plant flue gas white elimination system which characterized in that: the system comprises an air preheater bypass system, a flue gas condensation-reheating system, a condensed water heating system and a heating medium water circulating system; the air preheater bypass system comprises an air preheater bypass inlet flue gas baffle (1), a flue gas cooler (2) and an air preheater bypass outlet flue gas baffle (3), wherein a chimney of the air preheater bypass inlet flue gas baffle (1) is arranged at the initial end of an air preheater bypass flue, the flue gas cooler (2) is arranged at the downstream of the air preheater bypass inlet flue gas baffle (1), the air preheater bypass outlet flue gas baffle (3) is arranged at the tail end of the air preheater bypass flue, the initial end and the tail end of the air preheater bypass flue are respectively communicated with a flue gas outlet of an SCR flue gas denitration device (15) and a flue gas inlet of a dust remover (17), a flue gas outlet of the SCR flue gas denitration device (15) is also connected with an air preheater (16), the air preheater (16) is connected with the dust remover (17), and the dust remover (17) is connected with a desulfurization tower (18); the flue gas condensing-reheating system comprises a flue gas condenser (4) and a flue gas reheater (5), wherein the flue gas condenser (4) is arranged in a clean flue behind a desulfurizing tower (18), and the flue gas reheater (5) is arranged in a flue between the flue gas condenser (4) and a chimney (19); the condensed water heating system comprises a condenser (6), a first low-pressure heater (14), a second low-pressure heater (7), a plate heat exchanger (8) and a third low-pressure heater (9), wherein the condenser (6) is arranged at the upstream of the first low-pressure heater (14), the second low-pressure heater (7) is arranged at the downstream of the first low-pressure heater (14), a condensed water inlet pipe of the plate heat exchanger (8) is communicated with a water outlet branch pipe of the second low-pressure heater (7), the third low-pressure heater (9) is arranged at the downstream of the second low-pressure heater (7), and the water outlet branch pipe of the third low-pressure heater (9) is communicated with a condensed water outlet pipe of the plate heat exchanger (8); the heat medium water circulating system comprises a heat medium water circulating pump (10), a heat medium water main pipeline electric valve (11), a flue gas reheater inlet heat medium water pipeline electric valve (12) and a plate heat exchanger inlet heat medium water pipeline electric valve (13), the heat medium water circulating pump (10) and the heat medium water main pipeline electric valve (11) are arranged on the heat medium water main pipeline, the electric valve (11) of the heating medium water main pipeline is positioned at the downstream of the heating medium water circulating pump (10), the electric valve (12) of the inlet heat medium water pipeline of the flue gas reheater is arranged at the initial end of the inlet heat medium water pipeline of the flue gas reheater (5), the electric valve (13) of the plate heat exchanger inlet heat medium water pipeline is arranged at the initial end of the inlet heat medium water pipeline of the plate heat exchanger (8), and a water outlet of the flue gas cooler (2) is communicated with the initial end of an inlet heat medium water pipeline of the flue gas reheater (5) and the initial end of an inlet heat medium water pipeline of the plate heat exchanger (8).
2. The coal fired power plant flue gas whitening reduction system of claim 1, characterized in that: the heat exchange tubes in the flue gas cooler (2) are H-shaped finned tubes, the materials of the H-shaped finned tubes are 20G or ND steel, and a steam soot blower is arranged to take certain anti-abrasion measures.
3. The coal fired power plant flue gas whitening reduction system of claim 1, characterized in that: in a flue gas condensation-reheating system, the flue gas condenser (4) exchanges heat with saturated wet flue gas by taking water as a cold source, cooling water adopts closed circulation, a heat exchange pipe adopts a light pipe type, and the heat exchange pipe is made of 2205 dual-phase steel, fluoroplastic, a titanium pipe or fluoroplastic steel; the heat exchange tube in the flue gas reheater (5) is a light tube or a fin tube, and the material of the heat exchange tube is 2205 dual-phase steel, 316L or fluoroplastic.
4. The coal fired power plant flue gas whitening reduction system of claim 1, characterized in that: in the condensed water heating system, condensed water flows through a middle pipe of the plate heat exchanger (8), the heat exchange pipe is a U-shaped pipe, and the material of the heat exchange pipe is 304 steel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921630004.2U CN211290133U (en) | 2019-09-27 | 2019-09-27 | Coal fired power plant flue gas white elimination system |
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| CN201921630004.2U CN211290133U (en) | 2019-09-27 | 2019-09-27 | Coal fired power plant flue gas white elimination system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110726153A (en) * | 2019-09-27 | 2020-01-24 | 华电电力科学研究院有限公司 | Coal-fired power plant flue gas whitening elimination system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110726153A (en) * | 2019-09-27 | 2020-01-24 | 华电电力科学研究院有限公司 | Coal-fired power plant flue gas whitening elimination system and method |
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