CN209917622U - Haze integrated device and clean system are controlled to efficiency - Google Patents
Haze integrated device and clean system are controlled to efficiency Download PDFInfo
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- CN209917622U CN209917622U CN201920582273.XU CN201920582273U CN209917622U CN 209917622 U CN209917622 U CN 209917622U CN 201920582273 U CN201920582273 U CN 201920582273U CN 209917622 U CN209917622 U CN 209917622U
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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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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The application relates to the technical field of energy environmental protection, especially, relate to an efficiency is controlled haze integrated device and clean system, and the haze integrated device is controlled to the efficiency includes: the system comprises a water curtain pool, a flue gas desulfurization unit, a flue gas denitration unit and a total heat and humidity exchange unit; the water curtain pool is used for preliminarily washing the flue gas, the flue gas is emphatically removed of sulfur dioxide in the flue gas desulfurization unit in a spraying mode, the flue gas in the denitration unit is removed of oxynitride in the flue gas in a spraying mode, and pollutants in the flue gas are further removed; the total heat and humidity exchange unit can effectively remove moisture in the flue gas, and fully achieves the aim of eliminating white smoke; through the mode of multistage purification, effectively get rid of pollutant and moisture in the flue gas, improved purification efficiency.
Description
Technical Field
The application relates to the technical field of energy environmental protection, in particular to an energy efficiency and haze treatment integrated device and a purification system.
Background
At present, flue gas generated by boiler combustion contains a large amount of particulate matters PM and sulfur dioxide SO2And nitrogen oxides can cause air pollution, so that the adoption of effective measures to reduce the pollutant emission of boiler flue gas has very important significance for the sustainable development of society. In addition, in the prior art, after ordinary wet desulphurization, the flue gas is usually saturated wet flue gas, the saturation humidity of ambient air is low, so that the coal-fired flue gas generates a 'white smoke' phenomenon at a chimney opening, and the white smoke contains a large amount of salts, small sulfuric acid droplets, gel dust and tiny dust, which are harmful to the coal-fired flue gas, so that the coal-fired flue gas needs to be subjected to white elimination treatment. However, in the prior art, the flue gas generated by boiler combustion is usually subjected to desulfurization and denitrification treatment by using a common wet method, and white smoke is also treated by using a condensation and reheating method, so that the treated flue gas still has high energy consumption and low purification efficiency.
SUMMERY OF THE UTILITY MODEL
An object of the application is to provide an efficiency is controlled haze integrated device and clean system to solve the flue gas that produces the boiler combustion among the prior art to a certain extent and handle the technical problem that the back energy consumption is high, the purification efficiency is low.
The application provides haze integrated device is controlled to efficiency includes: the system comprises a water curtain pool, a flue gas desulfurization unit, a flue gas denitration unit and a total heat and humidity exchange unit; the water curtain tank, the flue gas desulfurization unit, the flue gas denitration unit and the total heat and humidity exchange unit are communicated in sequence; the water curtain tank is used for carrying out primary water washing on the flue gas discharged by the boiler, and the flue gas after water washing flows into the flue gas desulfurization unit; the flue gas desulfurization unit is used for performing desulfurization treatment on the flue gas, and the flue gas subjected to desulfurization treatment flows into the flue gas denitration unit; the flue gas denitration unit is used for carrying out denitration treatment on the flue gas, and the flue gas subjected to denitration treatment flows into the full heat and moisture exchange unit; the total heat and humidity exchange unit is used for performing whitening treatment on the flue gas, and the whitened flue gas is discharged to the outside atmosphere.
In the above technical scheme, furtherly, be provided with the cross slab in the water curtain pond, will the water curtain pond is separated into upper space and lower space, just the upper space with the space is linked together down, the cross slab makes and flows in the water curtain pond the flue gas can carry out the secondary washing.
In any one of the above technical solutions, further, the flue gas desulfurization unit includes a desulfurization tower, a first water pump, and a desulfurization liquid pool; the top of the desulfurizing tower is provided with a first spray header, and the first spray header is connected with the desulfurizing liquid pool through a first pipeline; the first water pump is arranged on the first pipeline and used for enabling the desulfurization liquid in the desulfurization liquid pool to circulate between the desulfurization liquid pool and the first spray header.
In any one of the above technical solutions, further, the flue gas denitration unit includes a denitration tower, a second water pump and a denitration liquid pool; the top end of the denitration tower is provided with a second spray head, and the second spray head is connected with the denitration liquid pool through a second pipeline; the second water pump is arranged on the second pipeline and used for enabling the denitration liquid in the denitration liquid pool to circulate between the denitration liquid pool and the second spray header.
In any of the above technical solutions, further, the total heat and humidity exchange unit is provided with a flue gas inlet, a flue gas outlet, an air inlet and an air outlet; the flue gas inlet is communicated with an outlet of the flue gas denitration unit, the flue gas outlet is communicated with the outside atmosphere through a chimney, the air inlet is communicated with the outside environment, and the air outlet is communicated with the boiler.
In any one of the above technical solutions, further, the energy efficiency and haze treatment integrated device further includes a first temperature clean water tank, a second temperature clean water tank, a white elimination tower and a water-gas heat exchange unit, wherein the temperature of the first temperature clean water tank is lower than that of the second temperature clean water tank; the top of the white eliminating tower is provided with a third spray header, the third spray header is connected with the first temperature clean water tank through a third pipeline, and a third water pump is arranged on the third pipeline and used for enabling the clean water in the first temperature clean water tank to circulate between the first temperature clean water tank and the third spray header; and a flue gas inlet of the white matter eliminating tower is communicated with a flue gas outlet of the denitration tower, the flue gas outlet of the white matter eliminating tower is communicated with the outside atmosphere, and a water outlet of the white matter eliminating tower is communicated with the second-temperature clean water tank.
In any one of the above technical solutions, further, the energy efficiency and haze treatment integrated device further comprises a water-gas heat exchange unit; the water-gas heat exchange unit is provided with a water inlet, a water outlet, a second air inlet and a second air outlet; wherein the water inlet is communicated with the second temperature clean water tank, the water outlet is communicated with the first temperature clean water tank, the second air inlet is communicated with the external environment, and the second air outlet is communicated with the boiler.
In any of the above technical solutions, further, a water curtain flue is further disposed between the desulfurization tower and the denitrification tower, and a water film water tank is disposed above the water curtain flue; the water film water tank is communicated with the water curtain flue and is used for forming a water curtain in the water curtain flue.
In any one of the above technical solutions, further, the energy efficiency and haze treatment integrated device further comprises a sedimentation tank, a filtering tank and a clean water tank; wherein the sedimentation tank, the filtering tank and the clean water tank are communicated in sequence; the clean water tank is also communicated with the desulfurization liquid tank and the denitration liquid tank and is used for supplementing clean water to the desulfurization liquid tank and the denitration liquid tank; the sedimentation tank is also respectively communicated with the water curtain tank and the denitration tower and is used for receiving waste liquid flowing out of the water curtain tank and the denitration tower; the filtering tank is used for filtering the waste liquid in the sedimentation tank, and the waste liquid flows to the clean water tank after being filtered by the filtering tank.
The application also provides a clean system, including any one of the above technical scheme the haze integrated device is controlled to the efficiency, therefore, have this efficiency and control all beneficial technological effects of haze integrated device, here, no longer give unnecessary details.
Compared with the prior art, the beneficial effect of this application is:
the application provides haze integrated device is controlled to efficiency includes: the system comprises a water curtain pool, a flue gas desulfurization unit, a flue gas denitration unit and a total heat and humidity exchange unit; wherein, the water curtain tank, the flue gas desulfurization unit, the flue gas denitration unit and the total heat and humidity exchange unit are communicated in sequence; the flue gas generated after the boiler is combusted can enter the water curtain tank from a flue gas inlet of the water curtain tank, and the flue gas inlet of the water curtain tank is arranged at the bottom of the water curtain tank, so that the flue gas entering the water curtain tank can flow from bottom to top to pass through the water curtain, the water curtain can carry out primary water washing on the flue gas, and pollutants in the flue gas are removed primarily; the flue gas passing through the water curtain flows out of a flue gas outlet of the water curtain tank, flows into the bottom of the flue gas desulfurization unit and flows in the flue gas desulfurization unit in a counter-current manner, the flue gas is subjected to desulfurization spraying in a desulfurization tower, sulfur dioxide, dust and other pollutants in the flue gas are removed, the flue gas flows out of the flue gas outlet of the flue gas desulfurization unit and flows into the flue gas denitration unit along the bottom of the flue gas denitration unit, and the flue gas flows from bottom to top in the flue gas denitration unit and is subjected to denitration spraying; the flue gas is sprayed through denitration in the flue gas, removes oxynitrides in the flue gas and further removes dust and other impurities in the flue gas, then flows out of a flue gas outlet of the flue gas denitration unit and flows into the total heat and humidity exchange unit, the flue gas is subjected to heat and humidity exchange with air in the total heat and humidity exchange unit, the flue gas is cooled and dehumidified, water vapor in the flue gas is removed, the purpose of white elimination is fully achieved, the flue gas after white elimination reaches the emission standard, and the flue gas can be directly discharged to the atmospheric environment.
Therefore, the energy-efficiency haze-treatment integrated device provided by the application can be used for primarily washing the flue gas through the water curtain tank, so that pollutants in the flue gas can be greatly removed, the sulfur dioxide in the flue gas can be emphatically removed in the flue gas desulfurization unit in a spraying mode, and impurities such as dust in the flue gas can be further removed; the flue gas flowing into the flue gas denitration unit is emphatically removed of oxynitride in the flue gas in a spraying mode, and dust and other impurities in the flue gas can be further removed; the total heat and humidity exchange unit can effectively remove moisture in the flue gas, and fully achieves the aim of eliminating white smoke; through the mode of multistage purification, effectively get rid of pollutant and moisture in the flue gas, improved purification efficiency.
The application provides a clean system, including the aforesaid efficiency treat haze integrated device, therefore, treat haze integrated device through this efficiency and carry out desulfurization step by step, denitration and disappear white processing to the flue gas, effectively get rid of the pollutants in the flue gas, purifying effect is good and purification efficiency is high.
Drawings
In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of an energy efficiency and haze treatment integrated device provided by an embodiment of the application;
fig. 2 is another schematic structural diagram of the energy efficiency and haze treatment integrated device provided by the embodiment of the application;
fig. 3 is a top view of the energy efficiency and haze treatment integrated device provided by the embodiment of the application;
fig. 4 is another schematic structural diagram of the energy efficiency and haze treatment integrated device provided by the embodiment of the application;
FIG. 5 is a flow chart of a flue gas cleaning process provided by an embodiment of the present application;
fig. 6 is a further flowchart of a flue gas cleaning process provided in an embodiment of the present application.
Reference numerals:
1-water curtain pool, 101-diaphragm plate, 2-flue gas desulfurization unit, 201-desulfurization tower, 202-first water pump, 203-desulfurization liquid pool, 3-flue gas denitration unit, 301-denitration tower, 302-second water pump, 303-denitration liquid pool, 4-total heat and humidity exchange unit, 5-first temperature clean water pool, 6-second temperature clean water pool, 7-white elimination tower, 701-third water pump, 8-water gas heat exchange unit, 9-water curtain flue, 901-water film water tank, 10-sedimentation tank, 11-filtration tank, 12-clean water pool, and 13-chimney.
Detailed Description
The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments.
The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The energy efficiency and haze treatment integrated device according to some embodiments of the present application is described below with reference to fig. 1 to 6.
Example one
Referring to fig. 1 to 3, an embodiment of the present application provides an energy efficiency and haze treatment integrated device, including: the system comprises a water curtain pool 1, a flue gas desulfurization unit 2, a flue gas denitration unit 3 and a total heat and humidity exchange unit 4; wherein, the water curtain tank 1, the flue gas desulfurization unit 2, the flue gas denitration unit 3 and the total heat and humidity exchange unit 4 are communicated in sequence; the water curtain tank 1 is used for carrying out primary water washing on the flue gas discharged by the boiler, and the flue gas after water washing flows into the flue gas desulfurization unit 2; the flue gas desulfurization unit 2 is used for performing desulfurization treatment on flue gas, and the flue gas subjected to desulfurization treatment flows into the flue gas denitration unit 3; the flue gas denitration unit 3 is used for carrying out denitration treatment on flue gas, and the flue gas subjected to denitration treatment flows into the total heat and humidity exchange unit 4; the total heat and humidity exchange unit 4 is used for performing whitening treatment on the flue gas, and the whitened flue gas is discharged to the outside atmosphere.
The application provides haze integrated device is controlled to efficiency includes: the system comprises a water curtain pool 1, a flue gas desulfurization unit 2, a flue gas denitration unit 3 and a total heat and humidity exchange unit 4; wherein, the water curtain tank 1, the flue gas desulfurization unit 2, the flue gas denitration unit 3 and the total heat and humidity exchange unit 4 are communicated in sequence; flue gas generated after combustion of the boiler can enter the water curtain tank 1 from a flue gas inlet of the water curtain tank 1, and the flue gas inlet of the water curtain tank 1 is arranged at the bottom of the water curtain tank 1, so that the flue gas entering the water curtain tank 1 can flow from bottom to top to pass through a water curtain, the water curtain can preliminarily wash the flue gas, and pollutants in the flue gas are preliminarily removed; the flue gas passing through the water curtain flows out from the flue gas outlet of the water curtain tank 1, flows into the bottom of the flue gas desulfurization unit 2 and flows upstream in the flue gas desulfurization unit 2, the flue gas is subjected to desulfurization spraying in the desulfurization tower 201, after impurities such as sulfur dioxide and dust in the flue gas are removed, the flue gas flows out from the flue gas outlet of the flue gas desulfurization unit 2 and flows into the flue gas denitration unit 3 along the bottom of the flue gas denitration unit 3, and the flue gas flows from bottom to top in the flue gas denitration unit 3 to be subjected to denitration spraying; the flue gas is sprayed through denitration at the flue gas, remove oxynitride in the flue gas and further get rid of dust and other impurity in the flue gas and flow out from the exhanst gas outlet of flue gas denitration unit 3 and flow into in the total heat and humidity exchange unit 4, the flue gas carries out heat and humidity exchange with the air in the total heat and humidity exchange unit 4, cool down the dehumidification to the flue gas, get rid of the aqueous vapor in the flue gas, fully reach the mesh of disappearing, the flue gas after the white processing that disappears reaches emission standard, can directly discharge to atmospheric environment in.
Therefore, the energy-efficiency haze-treatment integrated device provided by the application can be used for primarily washing flue gas through the water curtain tank 1, so that pollutants in the flue gas can be greatly removed, sulfur dioxide in the flue gas can be removed from the flue gas in the flue gas desulfurization unit 2 in a spraying manner, and impurities such as dust in the flue gas can be further removed; the flue gas flowing into the flue gas denitration unit 3 is mainly used for removing oxynitride in the flue gas in a spraying mode, and dust and other impurities in the flue gas can be further removed; the total heat and humidity exchange unit 4 can effectively remove moisture in the flue gas, and fully achieves the aim of eliminating white smoke; through the mode of multistage purification, effectively get rid of pollutant and moisture in the flue gas, improved purification efficiency.
Wherein, optionally, the flue gas entry in water curtain pond 1 sets up in the bottom in water curtain pond 1, and the flue gas flows into water curtain pond 1 from the flue gas entry in water curtain pond 1, and the flue gas export in water curtain pond 1 sets up the top in water curtain pond 1.
Optionally, a flue gas inlet of the flue gas desulfurization unit 2 is arranged at the bottom of the flue gas desulfurization unit 2, a flue gas outlet of the flue gas desulfurization unit 2 is arranged at the top of the flue gas desulfurization unit 2, and flue gas flows in from the flue gas inlet of the flue gas desulfurization unit 2 and flows out from the flue gas outlet of the flue gas desulfurization unit 2.
Optionally, a flue gas inlet of the flue gas denitration unit 3 is arranged at the bottom of the flue gas denitration unit 3, a flue gas outlet of the flue gas denitration unit 3 is arranged at the top of the flue gas denitration unit 3, and flue gas flows in from the flue gas inlet of the flue gas denitration unit 3 and flows out from the flue gas outlet of the flue gas denitration unit 3.
In this embodiment, as shown in fig. 1 to 4, a diaphragm 101 is disposed in the water curtain tank 1, the water curtain tank 1 is divided into an upper space and a lower space, the upper space is communicated with the lower space, a washing liquid for washing flue gas flows in from the top of the water curtain tank 1, a water curtain is formed in the upper space, the water curtain firstly falls on the diaphragm 101, then continuously falls along the diaphragm 101 to flow into the lower space, and finally flows out of the water curtain tank 1, so that the flue gas firstly passes through the water curtain in the lower space to be washed once after entering the water curtain tank 1, a large amount of pollutants in the flue gas are removed, the flue gas rises in the water curtain tank 1, and then passes through the water curtain in the upper space to be washed twice, and the pollutants in the flue gas are further removed.
In this embodiment, as shown in fig. 1 and fig. 2, the flue gas desulfurization unit 2 includes a desulfurization tower 201, a first water pump 202, and a desulfurization liquid pool 203; the top of the desulfurizing tower 201 is provided with a first spray header, and the first spray header is connected with the desulfurizing liquid pool 203 through a first pipeline; first water pump 202 sets up on first pipeline, and first water pump 202 is arranged in making the doctor solution in the doctor solution pond 203 circulate between doctor solution pond 203 and first shower head for the doctor solution can obtain cyclic utilization, saves the cost, still avoids discharging a large amount of doctor solutions simultaneously and causes environmental pollution.
Optionally, the desulfurization solution is a common desulfurization agent in the prior art, a plurality of alkaline compounds can be used as a desulfurizer to remove sulfur dioxide in flue gas, and the most alkaline solutions are lime, limestone and an alkaline solution prepared from a lime agent, which can be fully understood by those skilled in the art and will not be described herein again.
In this embodiment, as shown in fig. 1 and fig. 2, the flue gas denitration unit 3 includes a denitration tower 301, a second water pump 302, and a denitration liquid pool 303; the top end of the denitration tower 301 is provided with a second spray header, and the second spray header is connected with the denitration liquid pool 303 through a second pipeline; second water pump 302 sets up on the second pipeline, and second water pump 302 is arranged in making the denitration liquid in denitration liquid pond 303 circulate between denitration liquid pond 303 and second shower head for denitration liquid can obtain cyclic utilization, saves the cost, still avoids discharging a large amount of denitration liquids simultaneously and causes environmental pollution.
Optionally, the denitration liquid is a denitration agent commonly used in the prior art, and those skilled in the art can fully understand the denitration agent, and details are not described herein.
In this embodiment, as shown in fig. 1 to 4, the total heat and moisture exchange unit 4 is provided with a flue gas inlet, a flue gas outlet, a first air inlet and a first air outlet; the flue gas inlet is communicated with an outlet of the flue gas denitration unit 3, the flue gas outlet is communicated with the outside atmosphere through a chimney 13, the first air inlet is communicated with the outside environment, the first air outlet is communicated with the boiler, so that finally-treated flue gas can be discharged to a specified height through the chimney 13 to meet the emission standard requirement, the air outlet is connected with the boiler through a pipeline, the air after heating and humidifying is used for supporting combustion in the boiler, and waste heat generated in the process of white matter elimination is fully utilized.
Wherein, optionally, the total heat and moisture exchange unit 4 is a cross flow exchanger or a counter flow exchanger commonly used in the prior art, a windproof moisture permeable film is used as a medium, and the smoke and air are subjected to total heat and moisture exchange through the windproof moisture permeable film; the total heat and moisture exchanger is a device for exchanging heat and moisture in the flue gas of the substance a into the air of the substance B to increase the temperature and moisture of the air, and is used for heat and moisture exchange between the flue gas and the air to reduce the temperature and the moisture of the flue gas and achieve the whitening effect, but not limited thereto.
The embodiment also provides a purification system, which comprises the energy efficiency and haze treatment integrated device in any one of the above embodiments, so that the energy efficiency and haze treatment integrated device has all beneficial technical effects, and is not repeated herein.
Example two
The energy efficiency and haze treatment integrated device in the embodiment is an improvement on the basis of the first embodiment, technical contents disclosed in the first embodiment are not described repeatedly, and the contents disclosed in the first embodiment also belong to the contents disclosed in the present embodiment.
In this embodiment, as shown in fig. 1 to 4, the energy efficiency and haze treatment integrated device includes: the system comprises a water curtain pool 1, a flue gas desulfurization unit 2, a flue gas denitration unit 3 and a total heat and humidity exchange unit 4; a first temperature clean water tank 5, a second temperature clean water tank 6, a white eliminating tower 7 and a water-gas heat exchange unit 8, wherein the liquid temperature in the first temperature clean water tank 5 is lower than that in the second temperature clean water tank 6, that is, in the embodiment, the first temperature clean water tank 5 is a low temperature clean water tank, and the second temperature clean water tank 6 is a high temperature clean water tank; wherein, water curtain pond 1, flue gas desulfurization unit 2, flue gas denitration unit 3 and full heat and moisture exchange unit 4 are linked together in proper order, can purify the flue gas step by step.
The top of the white matter eliminating tower 7 is provided with a third spray header, the third spray header is connected with the first temperature clean water tank 5 through a third pipeline, the third pipeline is provided with a third water pump 701, clean water in the first temperature clean water tank 5 can be circularly sprayed between the first temperature clean water tank 5 and the third spray header through the third water pump 701, and the smoke is cooled and dehumidified to achieve the purpose of white matter elimination; in the process of spraying the flue gas by the clean water, the clean water and the flue gas are subjected to heat-moisture exchange, so that the temperature of the flowing clean water can be increased, when the temperature of the clean water is increased to a preset standard temperature value, in order to ensure the whitening effect, the high-temperature clean water is guided into a clean water tank 6 with a second temperature through a second water outlet, and new low-temperature clean water is supplied for continuous whitening spraying; a flue gas inlet of the white matter eliminating tower 7 is communicated with a flue gas outlet of the denitration tower 301, so that the flue gas subjected to denitration treatment can flow into the white matter eliminating tower 7 for white matter elimination; the smoke outlet of the white-removing tower 7 is communicated with the outside atmosphere and used for discharging the smoke which reaches the emission standard after white removing to the atmosphere through a chimney 13.
The water inlet of the water-gas heat exchange unit 8 is communicated with the second temperature clean water tank 6 through a fourth pipeline, and a fourth water pump is arranged on the pipeline, so that high-temperature clean water in the second temperature clean water tank 6 can circulate in the second temperature clean water tank 6 and the water-gas heat exchange unit 8, and after the air entering the water-gas heat exchange unit 8 is heated through the high-temperature clean water, the air is led to the boiler for combustion, the combustion efficiency of the boiler is improved, and fuel is saved to a certain extent; after the air in the water-gas heat exchange unit 8 is heated, the temperature of the high-temperature clean water is reduced, and the reduced low-temperature clean water is drained to the first-temperature clean water tank 5 for reuse, so that a large amount of water resources are saved, and waste is avoided.
Wherein, optionally, the water-gas heat exchange unit 8 is a cross-flow exchanger or a counter-flow exchanger commonly known in the prior art, but not limited thereto.
In this embodiment, as shown in fig. 2 to 4, a water curtain flue 9 is further disposed between the desulfurization tower 201 and the denitrification tower 301, and a water film water tank 901 is disposed above the water curtain flue 9; a water inlet of the water film water tank 901 is connected with the desulfurization solution tank 203 through a pipeline, so that the desulfurization solution in the desulfurization solution tank 203 can also flow into and be stored in the water film water tank 901; the bottom of water film water tank 901 is provided with the cloth liquid pipeline, and cloth liquid pipeline is linked together with cascade flue 9 for form the desulfurization cascade in the cascade flue 9, the flue gas carries out the washing in getting into cascade flue 9 from flue gas desulfurization unit 2's exhanst gas outlet, can further strengthen desulfurization and the dust removal effect to the flue gas on flue gas desulfurization unit 2's basis, has improved the purification efficiency of flue gas.
In this embodiment, as shown in fig. 2, the energy-efficiency haze-treatment integrated device further includes a sedimentation tank 10, a filtration tank 11 and a clean water tank 12; wherein, the sedimentation tank 10, the filtering tank 11 and the clean water tank 12 are communicated in sequence; the clean water tank 12 is also communicated with the desulfurization solution tank 203 and the denitration solution tank 303, and can supplement clean water to the desulfurization solution tank 203 and the denitration solution tank 303 in time; sedimentation tank 10 still is linked together with water curtain pond 1 and denitration tower 301 respectively for accept the waste liquid that water curtain pond 1 and denitration tower 301 flow out, filtering ponds 11 flows to clean water basin 12 after carrying out filtration treatment to the waste liquid, forms the water route circulation, makes this efficiency control each partial liquid cycle of haze integrated device and uses, saves a large amount of resources, reduces extravagantly, practices thrift the cost.
In this embodiment, as shown in fig. 1 to 4, different types and different functions of monitoring instruments are respectively arranged on the connecting pipelines and the flues between the desulfurization solution tank 203 and the desulfurization tower 201, between the water film water tank 901 and the desulfurization solution tank 203, between the denitration tower 301 and the denitration solution tank 303, between the desulfurization solution tank 203 and the denitration solution tank 303, between the desulfurization solution tank 303 and the clean water tank 12, between the denitration tower 301 and the sedimentation tank 10, between the bleaching tower 7 and the sedimentation tank 10, and between the water curtain tank 1 and the sedimentation tank 10; a plurality of monitoring instruments are used for monitoring various information of the temperature, the humidity, the flow speed, the pressure, the water quality, smoke dust particles, nitrogen oxides and sulfur dioxide concentration of water, air and smoke at a plurality of monitoring points in the energy efficiency and haze treatment integrated device through a multi-parameter control and adjustment method, the thermal parameters of the water, the air and the smoke and the emission parameters of smoke pollutants are controlled by utilizing various monitoring indexes, and a control system runs all year round and under variable working conditions.
Optionally, the monitoring instrument may be a temperature and pressure instrument, a flow instrument, an instrument for monitoring the concentrations of smoke particles, nitrogen oxides, and sulfur dioxide, and the like, which are common in the prior art, and the detecting instrument with the corresponding function is selected according to the setting position and the information to be collected.
EXAMPLE III
As shown in fig. 1 and 5, an embodiment of the present application provides a flue gas purification process, including the following steps:
s100, enabling flue gas to enter from the lower part of a water curtain tank 1, enabling the flue gas to enter a flue gas desulfurization unit 2 from the upper part of the water curtain tank 1 after passing through a water curtain, enabling the flue gas to flow upwards in the flue gas desulfurization unit 2 in a counter-current manner, and performing desulfurization and dust removal through desulfurization liquid spraying;
s200, after being treated by the flue gas desulfurization unit 2, the flue gas flows out from the upper part of the flue gas desulfurization unit 2 and enters a first flue arranged between the flue gas desulfurization unit 2 and the flue gas denitration unit 3; the flue gas changes the flow direction in the first flue, flows out from top to bottom from the lower part of the first flue and enters the bottom of the flue gas denitration unit 3, and is subjected to denitration and dust removal by spraying denitration liquid in the flue gas denitration unit 3 from upstream to downstream;
s300, after being treated by the flue gas denitration unit 3, the flue gas enters the full heat and humidity exchange unit 4 from the upper part of the denitration tower 301, the flue gas is subjected to heat and humidity exchange with air in the full heat and humidity exchange unit 4, and the flue gas after being cooled and dehumidified flows out of the full heat and humidity exchange unit 4 and flows into the chimney 13 to form a flue gas passage and is discharged to the outside atmosphere.
In the embodiment, the flue gas firstly enters the water curtain tank 1, and the water washing treatment of the desulphurization water curtain is carried out twice in the water curtain tank 1 to remove most of pollutants such as sulfide, dust and the like in the flue gas; the flue gas flows out of the water curtain tank 1 and flows into the flue gas desulfurization unit 2 for fine desulfurization treatment, so that pollutants such as sulfide, dust and the like in the flue gas are further removed; after desulfurization treatment, flue gas flows into the flue gas denitration unit 3 for fine denitration treatment, the flue gas with pollutants removed flows into the total heat and humidity exchange unit 4 for cooling and dehumidification, the effect of whitening is achieved, the pollutants in the flue gas after whitening are removed, the flue gas reaches the emission standard, and whitening treatment can be visually completed.
Example four
As shown in fig. 2, fig. 5 and fig. 6, an embodiment of the present application provides another flue gas purification process, the flue gas purification process in the embodiment is an improvement on the basis of the third embodiment, technical contents disclosed in the first embodiment are not described repeatedly, and the contents disclosed in the first embodiment also belong to the contents disclosed in the present embodiment.
In this embodiment, as shown in fig. 6, between S100 and S200, further includes:
flue gas is sprayed by a desulfurization solution in the flue gas desulfurization unit 2 and then enters the water curtain flue 9 from the upper part of the flue gas desulfurization unit 2; the flue gas continues to pass through the spray of the desulfurization solution in the water film water tank 901 in the water curtain flue 9, and enters the flue gas denitration unit 3 from the lower part of the water curtain flue 9 after further desulfurization and dust removal;
between S200 and S300 also include:
the flue gas flows out from the upper part of the flue gas denitration unit 3 after being sprayed by the denitration liquid in the flue gas denitration unit 3 and flows into a second flue communicated with the white-eliminating tower 7; the flue gas changes the flow direction in the second flue, enters the white-removing tower 7 from top to bottom, is sprayed in the white-removing tower 7 from the upstream to the top, and the flue gas after temperature reduction and dehumidification flows out of the white-removing tower 7 and flows into a chimney 13 to form a flue gas passage and is discharged to the outside atmosphere;
after S300, further comprising:
the outdoor air enters the water-gas heat exchange unit 8 for countercurrent spraying, the heat of the flue gas in the white tower 7 is recovered, and the heated and humidified air enters the boiler for combustion supporting.
In the embodiment, the flue gas firstly enters the water curtain tank 1, and the water washing treatment of the desulphurization water curtain is carried out twice in the water curtain tank 1 to remove most of pollutants such as sulfide, dust and the like in the flue gas; flue gas flows out of the water curtain tank 1 and flows into the flue gas desulfurization unit 2 to be subjected to fine desulfurization treatment, the flue gas flows out of the flue gas desulfurization unit 2 and enters the water curtain flue 9 to be subjected to desulfurization spraying, pollutants such as sulfide and dust in the flue gas are further removed, the flue gas is sprayed by the water curtain flue 9 and then enters the flue gas denitrification unit 3 to be subjected to fine denitrification treatment, pollutants such as oxynitride and dust in the flue gas are removed, the flue gas enters the whitening tower 7 through the second flue to be subjected to whitening treatment, the emission standard is reached after the flue gas whitening treatment, and the flue gas can be discharged to the atmosphere through the chimney 13; the water-gas heat exchange unit 8 is communicated with the second-temperature clean water tank 6, and the high-temperature water flowing into the second-temperature clean water tank 6 from the white water elimination tower 7 can heat and humidify the outdoor air entering the hydrothermal unit and is guided into the boiler to support combustion, so that the combustion efficiency of the boiler is improved, and the fuel cost is saved.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. The utility model provides an efficiency is controlled haze integrated device which characterized in that includes: the system comprises a water curtain pool, a flue gas desulfurization unit, a flue gas denitration unit and a total heat and humidity exchange unit;
the water curtain tank, the flue gas desulfurization unit, the flue gas denitration unit and the total heat and humidity exchange unit are communicated in sequence;
the water curtain tank is used for carrying out primary water washing on the flue gas discharged by the boiler, and the flue gas after water washing flows into the flue gas desulfurization unit;
the flue gas desulfurization unit is used for performing desulfurization treatment on the flue gas, and the flue gas subjected to desulfurization treatment flows into the flue gas denitration unit;
the flue gas denitration unit is used for carrying out denitration treatment on the flue gas, and the flue gas subjected to denitration treatment flows into the full heat and moisture exchange unit;
the total heat and humidity exchange unit is used for performing whitening treatment on the flue gas, and the whitened flue gas is discharged to the outside atmosphere.
2. The energy efficiency and haze treatment integrated device according to claim 1, wherein a diaphragm is arranged in the water curtain tank to divide the water curtain tank into an upper space and a lower space, the upper space is communicated with the lower space, and the diaphragm enables the flue gas flowing into the water curtain tank to be subjected to secondary water washing.
3. The energy efficiency and haze treatment integrated device according to claim 1, wherein the flue gas desulfurization unit comprises a desulfurization tower, a first water pump and a desulfurization liquid pool;
the top of the desulfurizing tower is provided with a first spray header, and the first spray header is connected with the desulfurizing liquid pool through a first pipeline; the first water pump is arranged on the first pipeline and used for enabling the desulfurization liquid in the desulfurization liquid pool to circulate between the desulfurization liquid pool and the first spray header.
4. The energy efficiency and haze treatment integrated device according to claim 3, wherein the flue gas denitration unit comprises a denitration tower, a second water pump and a denitration liquid pool;
the top end of the denitration tower is provided with a second spray head, and the second spray head is connected with the denitration liquid pool through a second pipeline; the second water pump is arranged on the second pipeline and used for enabling the denitration liquid in the denitration liquid pool to circulate between the denitration liquid pool and the second spray header.
5. The energy efficiency and haze treatment integrated device according to claim 1, wherein the total heat and humidity exchange unit is provided with a flue gas inlet, a flue gas outlet, an air inlet and an air outlet;
the flue gas inlet is communicated with an outlet of the flue gas denitration unit, the flue gas outlet is communicated with the outside atmosphere through a chimney, the air inlet is communicated with the outside environment, and the air outlet is communicated with the boiler.
6. The energy efficiency and haze treatment integrated device according to claim 5, further comprising a first temperature clean water tank, a second temperature clean water tank, a white eliminating tower and a water-gas heat exchange unit, wherein the temperature of the first temperature clean water tank is lower than that of the second temperature clean water tank;
the top of the white eliminating tower is provided with a third spray header, the third spray header is connected with the first temperature clean water tank through a third pipeline, and a third water pump is arranged on the third pipeline and used for enabling the clean water in the first temperature clean water tank to circulate between the first temperature clean water tank and the third spray header; and a flue gas inlet of the white matter eliminating tower is communicated with a flue gas outlet of the flue gas denitration unit, a flue gas outlet of the white matter eliminating tower is communicated with the outside atmosphere, and a water outlet of the white matter eliminating tower is communicated with the second temperature clean water tank.
7. The energy efficiency and haze treatment integrated device according to claim 6, further comprising a water-gas heat exchange unit; the water-gas heat exchange unit is provided with a water inlet, a water outlet, a second air inlet and a second air outlet; wherein the water inlet is communicated with the second temperature clean water tank, the water outlet is communicated with the first temperature clean water tank, the second air inlet is communicated with the external environment, and the second air outlet is communicated with the boiler.
8. The energy efficiency and haze treatment integrated device according to claim 1, wherein a water curtain flue is further arranged between the flue gas desulfurization unit and the flue gas denitrification unit, and a water film water tank is arranged above the water curtain flue; the water film water tank is communicated with the water curtain flue and is used for forming a water curtain in the water curtain flue.
9. The energy efficiency and haze treatment integrated device according to claim 4, further comprising a sedimentation tank, a filtering tank and a clean water tank; wherein the sedimentation tank, the filtering tank and the clean water tank are communicated in sequence;
the clean water tank is also communicated with the desulfurization liquid tank and the denitration liquid tank and is used for supplementing clean water to the desulfurization liquid tank and the denitration liquid tank;
the sedimentation tank is also respectively communicated with the water curtain tank and the flue gas denitration unit and is used for receiving waste liquid flowing out of the water curtain tank and the flue gas denitration unit;
the filtering tank is used for filtering the waste liquid in the sedimentation tank, and the waste liquid flows to the clean water tank after being filtered by the filtering tank.
10. A decontamination system, comprising the energy efficiency and haze treatment integrated device of any one of claims 1-9.
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| CN109939555A (en) * | 2019-04-26 | 2019-06-28 | 云能科技有限公司 | Efficiency controls haze integrated apparatus and flue gas purifying technique |
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