CN111974182A - Novel high-efficient waste heat retrieval and utilization and flue gas take off white integrated device - Google Patents
Novel high-efficient waste heat retrieval and utilization and flue gas take off white integrated device Download PDFInfo
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- CN111974182A CN111974182A CN202010753487.6A CN202010753487A CN111974182A CN 111974182 A CN111974182 A CN 111974182A CN 202010753487 A CN202010753487 A CN 202010753487A CN 111974182 A CN111974182 A CN 111974182A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/343—Heat recovery
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- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/504—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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Abstract
The invention discloses a novel high-efficiency waste heat recycling and smoke whitening integrated device, which comprises: the heat exchanger is provided with an air inlet and an air outlet, a plate-type air pipe is arranged in the heat exchanger, two ends of the plate-type air pipe respectively extend to the corresponding air inlet and air outlet, a first fan is arranged at the air inlet, and the top and the bottom of the heat exchanger are respectively provided with a smoke inlet, a smoke outlet and a liquid outlet; the smoke inlet pipeline is connected to the smoke inlet; the exhaust pipeline comprises an exhaust pipeline and a smoke exhaust pipeline, one end of the exhaust pipeline is communicated with the air outlet, one end of the smoke exhaust pipeline is communicated with the smoke exhaust port, and the other ends of the exhaust pipeline and the smoke exhaust pipeline are both communicated with the exhaust funnel; the condensation component is connected with the liquid outlet by a connecting pipe; the alkali liquor neutralizing component is communicated with the condensed water tank by a connecting pipe. The device reasonable in design, the security performance is good, and the cost is lower, and degree of automation is high, can effectively solve wet flue gas desulfurization's dehumidification that discharges fume and take off white, eradicates the haze and pollutes.
Description
Technical Field
The invention relates to the technical field of energy-saving and emission-reduction production, in particular to a novel efficient waste heat recycling and flue gas whitening integrated device.
Background
The tail gas emission phenomenon exists in the industries such as thermal power, chemical industry, solid waste treatment and the like in the current industrial production of China, more than 90% of flue gas of coal-fired boilers in the industries such as thermal power and the like is desulfurized at present, more than 90% of flue gas is desulfurized by adopting a wet method, and the requirements of new national standards (GB13223-2011) can be met even ultra-low emission is realized by transforming a low-temperature electric dust remover and/or a tail-end wet electrostatic dust remover in the prior art. The problems of investment and operation cost are solved, even if various coal-fired boilers in China reach the ultra-low emission level, the atmospheric haze pollution cannot be thoroughly solved, because the control index of the humidity of the discharged flue gas is not the major defect in the current standard specification, and the control index is the root of the haze formation. Therefore, if the problems of smoke discharge, dehumidification and whitening in wet desulphurization can be effectively solved, the haze pollution can be eradicated, the environmental protection can be achieved at low cost, the ultra-low near-zero emission can be realized, particularly, the water and the waste heat in the smoke are recovered, the annual water saving potential is billions of tons, the coal burning efficiency is improved, and the contradiction between the environment and the development is also solved.
China is a big coal mine country, the original production comprises the industries of thermal power, steel, chemical industry, solid waste treatment and the like, coal-fired boilers are basically adopted, moisture brought out by the smoke discharged by a wet desulphurization system of the coal-fired boilers is taken as an example of a 300MW unit, and the desulphurization system consumes 120m of water per hour3H, including the moisture of the raw smoke of 71.8m3H, increase of 40m in desulfurization3And/h, the annual water consumption is about 100 ten thousand tons. Push button10000Nm of flue gas emitted according to burning ton coal3T, the moisture content of the wet smoke is 112g/Nm3It is estimated that moisture is taken away by wet flue gas of 1 ton of coal per burning, which mainly comprises original water in coal and desulfurization make-up water, and if 37 hundred million tons of coal is consumed in the country, moisture taken into the atmosphere by flue gas of coal burning is as high as thirty-hundred million tons.
The smoke in the chimney is in a saturated state, the saturated smoke is rapidly cooled by the atmosphere with lower temperature, the vapor in the smoke is condensed into liquid, and the transmission light rate of the smoke is reduced, so that the phenomenon that the chimney emits white smoke is shown; with the further diffusion of the smoke in the atmosphere, the concentration of the water vapor in the atmosphere is reduced, the sunlight transmittance is improved, the partial pressure of the water vapor in the atmosphere is reduced, the saturation temperature is reduced, the water vapor is evaporated again, and the white smoke is gradually reduced until the white smoke disappears.
The influence factors of the emission of the white smoke plume are mainly ambient temperature, ambient relative humidity, chimney outlet smoke temperature, ambient wind speed, smoke speed and the like. Wherein, the lower the environmental temperature is, the more obvious the smoke plume discharge phenomenon is, and the more difficult the smoke plume is to be treated; the larger the environmental humidity is, the more difficult the moisture in the smoke plume is to diffuse in time, so that the influence range of the smoke plume is enlarged, and the more difficult the wet smoke plume is to treat; the lower the flue gas temperature at the outlet of the chimney is, the smaller the length of the wet smoke plume is, and the wet smoke plume phenomenon can be weakened or eliminated to a certain extent by adopting a cooling measure; the higher the ambient wind speed, the longer the distance of the wet smoke plume; the larger the flue gas velocity is, the larger the length of the wet smoke plume is, which indicates that the load of the coal-fired unit and the diameter of the outlet of the chimney are also important factors influencing the emission of the wet smoke plume. The elimination mechanism of the white smoke plume is mainly to change the temperature of the smoke at the outlet of the absorption tower, further change the moisture content in the smoke, raise the temperature of the smoke and reduce the relative moisture content in the smoke; the temperature of the flue gas is reduced, and the absolute moisture content in the flue gas can be reduced; or to increase the ambient temperature.
Therefore, how to provide a novel efficient waste heat recycling and flue gas whitening integrated device with good safety performance and high automation degree is a problem that needs to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of the above, in order to solve the technical problems that the wet desulphurization technology in the prior art is high in operation cost and cannot thoroughly solve atmospheric haze pollution, the invention provides a novel efficient waste heat recycling and smoke whitening integrated device which is low in cost, capable of effectively solving the problems of smoke discharging, dehumidifying and whitening in wet desulphurization, and eliminating haze pollution, good in safety performance and high in automation degree.
In order to achieve the purpose, the invention adopts the following technical scheme:
a novel high-efficient waste heat retrieval and utilization and flue gas take off white integrated device includes:
the side wall of the heat exchanger is provided with an air inlet and an air outlet, a plate type air pipe convenient for air circulation is arranged in the heat exchanger, two ends of the plate type air pipe respectively extend to the corresponding air inlet and the corresponding air outlet, a first fan is fixed at the air inlet, and the top and the bottom of the heat exchanger are respectively provided with a smoke inlet and a smoke outlet for enabling high-temperature smoke to flow and a liquid outlet for discharging condensate;
the smoke inlet pipeline is arranged at the smoke inlet, one end of the smoke inlet pipeline is communicated with an outlet pipeline of an external wet desulphurization tower, and the other end of the smoke inlet pipeline is connected to the smoke inlet;
the exhaust pipeline comprises an exhaust pipeline and a smoke exhaust pipeline, one end of the exhaust pipeline is connected to the air outlet, the other end of the exhaust pipeline is communicated with the exhaust funnel, one end of the smoke exhaust pipeline is connected to the smoke exhaust outlet, and the other end of the smoke exhaust pipeline is communicated with the exhaust funnel;
the condensation assembly comprises a condensation water tank and a condensation water delivery pump, the condensation water tank is connected with the liquid outlet through a connecting pipe, and the condensation water delivery pump is communicated with the condensation water tank through the connecting pipe and used for pumping out the condensation liquid in the condensation water tank;
and the alkali liquor neutralizing assembly is communicated with the condensed water tank by utilizing the connecting pipe and is used for neutralizing the pH value of the condensed water collected in the condensed water tank.
Compared with the prior art, the invention discloses a novel high-efficiency waste heat recycling and flue gas whitening integrated device, by utilizing the plate-type air pipe and the first fan, the external clean air can be conveniently blown into the plate-type air pipe in the heat exchanger, and exchanges heat with the high-temperature flue gas in the heat exchanger to increase the temperature of the clean air in the plate-type air duct, the heated clean air enters the exhaust funnel through the exhaust duct, and is mixed with the cooled flue gas introduced into the exhaust funnel through the exhaust duct, so that the moisture content and the relative humidity of the mixed flue gas are greatly reduced, thereby reducing the dew point temperature of the exhausted flue gas, ensuring that the exhausted flue gas can not reach the dew point temperature in a short time after being exhausted, leading the moisture of the tail gas not to be condensed into water mist, the aim of reducing white smoke is further achieved, and the other part of the remaining heated clean air can be recycled as heat energy; the flue gas after cooling condenses a large amount of condensate, the condensate enters the condensate water tank through a liquid outlet and a connecting pipe at the bottom of the heat exchanger, the pH value of the condensate in the condensate water tank can be adjusted to 7-9.5 from 2-3 by the alkali liquor neutralization assembly, and the condensate after neutralization is recycled by using a condensate water conveying pump. The novel efficient waste heat recycling and flue gas whitening integrated device is reasonable in structural design, strong in structural stability, good in safety performance, low in cost, high in automation degree, capable of effectively solving the problems of smoke discharging, dehumidifying and whitening in wet desulphurization and eliminating haze pollution, and has a good application prospect and a high popularization value.
Furthermore, the heat exchanger is an enamel plate heat exchanger, and the shell of the enamel plate heat exchanger is made of stainless steel.
Optionally, the enamel plate heat exchanger shell is made of 2205 duplex stainless steel.
The beneficial effect that adopts above-mentioned technical scheme to produce is for the device's heat exchange efficiency is high, and structural stability is strong, and enamel plate heat exchanger's coefficient of heat conductivity has improved about 330% compared with traditional stainless steel plate heat exchanger.
Furthermore, a plurality of baffles which are arranged in parallel along the smoke flowing direction are further arranged inside the heat exchanger, and the baffles are arranged at even intervals and are made of stainless steel.
Optionally, the partition plate is made of 2205 duplex stainless steel.
The beneficial effect who adopts above-mentioned technical scheme to produce is that, the setting of baffle can prevent effectively that the heat exchanger casing from producing resonance, still makes the inside difficult jam of heat exchanger among the device simultaneously, and it is convenient to wash, and corrosion resistance is strong, but also can effectively fix the plate-type tuber pipe in the heat exchanger.
Furthermore, the air inlets, the air outlets and the plate-type air pipes are more than two, the more than two air inlets and the more than two air outlets are respectively and oppositely arranged on the side wall of the heat exchanger, and the more than two plate-type air pipes are respectively and correspondingly arranged with the more than two air inlets and the more than two air outlets.
The beneficial effect who adopts above-mentioned technical scheme to produce is, has effectively improved the heat exchange efficiency of the inside clean air of heat exchanger and high temperature flue gas in the device.
Furthermore, the number of the first fans is more than two, and the first fans are correspondingly arranged at the air inlets respectively and are used for blowing external clean air into the plate-type air pipes in the heat exchanger.
The beneficial effect who adopts above-mentioned technical scheme to produce is, be convenient for with inside the heat exchanger is blown into a large amount of external clean air, further improved the heat exchange efficiency of the inside clean air of heat exchanger and high temperature flue gas.
Furthermore, the smoke exhaust pipeline is also provided with a second fan which is used for extracting the smoke subjected to heat exchange in the heat exchanger and discharging the smoke subjected to heat exchange into the exhaust funnel through the smoke exhaust pipeline.
The beneficial effect who adopts above-mentioned technical scheme to produce is that, be convenient for extract the flue gas after the heat exchanger heat transfer to the aiutage in, make the flue gas after the cooling mix with the clean air after the intensification, reduce flue gas moisture content and relative humidity after the mixture to reduce the dew point temperature of evacuation flue gas, reach the mesh of subducing white cigarette.
Further, the first fan adopts an axial flow fan, and the second fan adopts an induced draft fan.
The beneficial effects who adopts above-mentioned technical scheme to produce are that, in axial fan is convenient for to blow into the heat exchanger with the outside air in a large number, improve the heat exchange efficiency of outside air and high temperature flue gas, the draught fan is convenient for extract the flue gas after the cooling in the heat exchanger to the aiutage in, reach the purpose of subducing white cigarette.
Further, the alkali lye neutralization assembly includes alkali lye discharge pump, alkali lye storage tank and automatic dosing pump, the feed liquor end utilization of alkali lye discharge pump the connecting pipe with external fortune alkali car intercommunication, go out the liquid end utilization the connecting pipe with alkali lye storage tank intercommunication, be used for with alkali lye pump sending in the external fortune alkali car extremely in the alkali lye storage tank, the feed liquor end utilization of automatic dosing pump the connecting pipe with alkali lye storage tank intercommunication, go out the liquid end utilization the connecting pipe with condensate tank intercommunication, be used for with alkali lye pump sending in the alkali lye storage tank extremely in the condensate tank, in order to neutralize the pH value of condensate in the condensate tank.
The device has the advantages that the device is reasonable in overall structural design and strong in structural compactness, flue gas condensate water after desulfurization can completely meet the water quality requirement of desulfurization process water or cooling tower circulating water after neutralization treatment, the PH value of the condensate water can be neutralized from 2-3 to 7-9.5, the neutralized condensate water is connected to a desulfurization process water tank and used as desulfurization process water replenishing, when the flue gas condensate water quantity is not more than the desulfurization water consumption time, the condensate water can be completely used as the desulfurization process water replenishing, when the flue gas condensate water quantity is more than the desulfurization water consumption time, redundant parts can be discharged to the cooling tower to be used as the circulating water replenishing water, zero water consumption of desulfurization is realized, and the water balance of a desulfurization system cannot be influenced.
Further, still include appearance accuse unit and PLC switch board, the appearance accuse unit is a plurality of, and is a plurality of the appearance accuse unit evenly arranges respectively exhaust pipe the exhaust pipe with on the aiutage, be used for the monitoring exhaust pipe the exhaust pipe with temperature and pressure in the aiutage, the PLC switch board is located the heat exchanger is outside, just the PLC switch board is with a plurality of the appearance accuse unit first fan the second fan with condensate water delivery pump signal connection.
The beneficial effect who adopts above-mentioned technical scheme to produce is for the device security performance is good and degree of automation is high, and the controllability is strong.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a novel efficient waste heat recycling and flue gas whitening integrated device provided by the invention.
Wherein: 1-heat exchanger, 11-air inlet, 12-air outlet, 13-smoke inlet, 14-smoke outlet, 15-liquid outlet, 16-partition plate, 2-first fan, 3-smoke inlet pipeline, 4-exhaust pipeline, 5-exhaust pipeline, 6-exhaust funnel, 7-condensation component, 71-condensation water tank, 72-condensation water delivery pump, 8-alkali liquor neutralization component, 81-alkali liquor unloading pump, 82-alkali liquor storage tank, 83-automatic dosing pump, 9-second fan, 10-instrument control unit, 20-PLC control cabinet and 100-external wet desulphurization tower outlet pipeline.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The invention discloses a novel high-efficiency waste heat recycling and smoke whitening integrated device, which comprises:
the heat exchanger comprises a heat exchanger 1, wherein an air inlet 11 and an air outlet 12 are formed in the side wall of the heat exchanger 1, a plate type air pipe convenient for air circulation is arranged in the heat exchanger 1, two ends of the plate type air pipe respectively extend to the corresponding air inlet 11 and air outlet 12, a first fan 2 is fixed at the air inlet 11, and the top and the bottom of the heat exchanger 1 are respectively provided with a smoke inlet 13 and a smoke outlet 14 for enabling high-temperature smoke to flow and a liquid outlet 15 for discharging condensate;
the smoke inlet pipeline 3 is arranged at the smoke inlet 13, one end of the smoke inlet pipeline 3 is communicated with the outlet pipeline 100 of the external wet desulphurization tower, and the other end of the smoke inlet pipeline 3 is connected at the smoke inlet 13;
the exhaust pipeline comprises an exhaust pipeline 4 and a smoke exhaust pipeline 5, one end of the exhaust pipeline 4 is connected to the air outlet 12, the other end of the exhaust pipeline is communicated with the exhaust funnel 6, one end of the smoke exhaust pipeline 5 is connected to the smoke outlet 14, and the other end of the smoke exhaust pipeline is communicated with the exhaust funnel 6;
the condensation assembly 7 comprises a condensation water tank 71 and a condensation water delivery pump 72, the condensation water tank 71 is connected with the liquid outlet 15 through a connecting pipe, and the condensation water delivery pump 72 is communicated with the condensation water tank 71 through the connecting pipe and is used for pumping out the condensation liquid in the condensation water tank 71;
the alkali liquor neutralizing assembly 8 is communicated with the condensation water tank 71 through a connecting pipe, and is used for neutralizing the pH value of the condensation water collected in the condensation water tank 71.
According to an optional embodiment of the invention, the heat exchanger 1 is an enamel plate heat exchanger 1, and the shell of the enamel plate heat exchanger 1 is made of 2205 duplex stainless steel, so that the device has high heat exchange efficiency and strong structural stability, and the heat conductivity coefficient of the enamel plate heat exchanger is improved by about 330% compared with that of the traditional stainless steel plate heat exchanger.
According to an optional embodiment of the invention, a plurality of partition plates 16 arranged in parallel along the smoke flowing direction are further arranged in the heat exchanger 1, the partition plates 16 are uniformly arranged at intervals, and the partition plates 16 are made of 2205 duplex stainless steel, so that the shell of the heat exchanger can be effectively prevented from generating resonance, meanwhile, the interior of the heat exchanger in the device is not easy to block, the cleaning is convenient, the corrosion resistance is high, and a plate type air pipe in the heat exchanger can be effectively fixed.
According to an optional embodiment of the invention, the number of the air inlets 11 and the number of the air outlets 12 are two, the two air inlets 11 and the two air outlets 12 are respectively and oppositely arranged on the side wall of the heat exchanger 1, the number of the plate-type air pipes is multiple, and the multiple plate-type air pipes are respectively arranged corresponding to the two air inlets 11 and the two air outlets 12, so that the heat exchange efficiency of clean air and high-temperature flue gas in the heat exchanger in the device is effectively improved.
According to an optional embodiment of the invention, two first fans 2 are provided, and the two first fans 2 are respectively and correspondingly arranged at the two air inlets 11, and are used for blowing external clean air into the plate-type air duct in the heat exchanger 1, so that the external clean air can be conveniently blown into the heat exchanger in a large amount, and the heat exchange efficiency of the clean air and the high-temperature flue gas in the heat exchanger is further improved.
According to an optional embodiment of the invention, the smoke exhaust pipe 5 is further provided with a second fan 9 for extracting the smoke subjected to heat exchange in the heat exchanger 1 and discharging the smoke subjected to heat exchange into the exhaust funnel 6 through the smoke exhaust pipe 5, so that the smoke subjected to heat exchange in the heat exchanger is conveniently extracted into the exhaust funnel, the smoke subjected to temperature reduction is mixed with the clean air subjected to temperature rise, the moisture content and the relative humidity of the mixed smoke are reduced, the dew point temperature of the evacuated smoke is further reduced, and the purpose of reducing white smoke is achieved.
According to an optional embodiment of the invention, the first fan 2 adopts an axial flow fan, the second fan 9 adopts an induced draft fan, the axial flow fan is convenient for blowing a large amount of outside air into the heat exchanger, the heat exchange efficiency of the outside air and high-temperature flue gas is improved, and the induced draft fan is convenient for extracting the flue gas cooled in the heat exchanger into the exhaust funnel, so that the aim of reducing white smoke is achieved.
According to an optional embodiment of the invention, the alkali lye neutralization component 8 comprises an alkali lye discharge pump 81, an alkali lye storage tank 82 and an automatic chemical feeding pump 83, wherein the liquid inlet end of the alkali lye discharge pump 81 is communicated with an external alkali transport vehicle by a connecting pipe, the liquid outlet end is communicated with the alkali lye storage tank 82 by a connecting pipe and is used for pumping alkali lye in the external alkali transport vehicle into the alkali lye storage tank 82, the liquid inlet end of the automatic chemical feeding pump 83 is communicated with the alkali lye storage tank 82 by a connecting pipe, the liquid outlet end is communicated with the condensed water tank 71 by a connecting pipe and is used for pumping the alkali lye in the alkali lye storage tank 82 into the condensed water tank 71 so as to neutralize the pH value of the condensed liquid in the condensed water tank 71, so that the device has reasonable integral structural design and strong structural compactness, can completely meet the water quality requirements of desulfurization process water or cooling tower circulating water after the desulfurization flue gas condensed water is neutralized, can neutralize the pH value of the condensed water from 2-3 to 7-9.5, and the neutralized condensed water is connected to a desulfurization process water tank to be used as the water supplement for the desulfurization process, when the amount of the flue gas condensed water is not more than the consumed time of the desulfurization water, the condensed water can be completely used as the water supplement for the desulfurization process, and when the amount of the flue gas condensed water is more than the consumed time of the desulfurization water, the redundant part can be discharged to a cooling tower to be used as the water supplement for the circulating water, so that zero water consumption for desulfurization is realized, and the water balance of a desulfurization.
According to an optional embodiment of the invention, the device further comprises a plurality of instrument control units 10 and a PLC control cabinet 20, the plurality of instrument control units 10 are respectively and uniformly arranged on the exhaust duct 4, the exhaust duct 5 and the exhaust stack 6 and used for monitoring the temperature and the pressure in the exhaust duct 4, the exhaust duct 5 and the exhaust stack 6, the PLC control cabinet 20 is arranged outside the heat exchanger 1, and the PLC control cabinet 20 is in signal connection with the plurality of instrument control units 10, the first fan 2, the second fan 9 and the condensate water conveying pump 72, so that the device has good safety performance, high automation degree and strong controllability.
According to the novel efficient waste heat recycling and smoke whitening integrated device, the plate-type air pipe and the first fan are utilized, external clean air can be conveniently blown into the plate-type air pipe in the heat exchanger and can exchange heat with high-temperature smoke in the heat exchanger, the temperature of the clean air in the plate-type air pipe is increased, the heated clean air enters the exhaust funnel through the exhaust pipeline and is mixed with the cooled smoke introduced into the exhaust funnel through the exhaust pipeline, the moisture content and the relative humidity of the mixed smoke are greatly reduced, the dew point temperature of the evacuated smoke is reduced, the dew point temperature of the evacuated smoke cannot be reached in a short time after the evacuated smoke is exhausted, the moisture of tail gas cannot be condensed into water mist, the aim of reducing white smoke is further achieved, and the rest part of heated clean air can be recycled as heat energy; the flue gas after cooling condenses a large amount of condensate, the condensate enters the condensate water tank through a liquid outlet and a connecting pipe at the bottom of the heat exchanger, the pH value of the condensate in the condensate water tank can be adjusted to 7-9.5 from 2-3 by the alkali liquor neutralization assembly, and the condensate after neutralization is recycled by using a condensate water conveying pump. The device is not only structural design is reasonable, and structural stability is strong, and the security performance is good moreover, and the cost is lower, and degree of automation is high, can effectively solve wet flue gas desulfurization's dehumidification whitening of discharging fume, and the elimination haze pollutes, has good application prospect and higher spreading value.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. The utility model provides a novel high-efficient waste heat retrieval and utilization and flue gas take off white integrated device which characterized in that includes:
the heat exchanger comprises a heat exchanger (1), wherein an air inlet (11) and an air outlet (12) are formed in the side wall of the heat exchanger (1), a plate-type air pipe convenient for air circulation is arranged in the heat exchanger (1), two ends of the plate-type air pipe respectively extend to the corresponding air inlet (11) and air outlet (12), a first fan (2) is fixed at the air inlet (11), and the top and the bottom of the heat exchanger (1) are respectively provided with a smoke inlet (13) and a smoke outlet (14) for enabling high-temperature smoke to flow and a liquid outlet (15) for discharging condensate;
the smoke inlet pipeline (3), the smoke inlet pipeline (3) is arranged at the smoke inlet (13), one end of the smoke inlet pipeline (3) is communicated with an outlet pipeline (100) of an external wet desulphurization tower, and the other end of the smoke inlet pipeline is connected at the smoke inlet (13);
the exhaust pipeline comprises an exhaust pipeline (4) and a smoke exhaust pipeline (5), one end of the exhaust pipeline (4) is connected to the air outlet (12), the other end of the exhaust pipeline is communicated with the exhaust funnel (6), one end of the smoke exhaust pipeline (5) is connected to the smoke exhaust port (14), and the other end of the smoke exhaust pipeline is communicated with the exhaust funnel (6);
the condensation assembly (7) comprises a condensation water tank (71) and a condensation water conveying pump (72), the condensation water tank (71) is connected with the liquid outlet (15) through a connecting pipe, and the condensation water conveying pump (72) is communicated with the condensation water tank (71) through the connecting pipe and is used for pumping out condensation liquid in the condensation water tank (71);
and the alkali liquor neutralizing component (8) is communicated with the condensed water tank (71) by utilizing the connecting pipe and is used for neutralizing the pH value of the condensed liquid collected in the condensed water tank (71).
2. The novel efficient waste heat recycling and flue gas whitening integrated device as claimed in claim 1, wherein the heat exchanger (1) is an enamel plate heat exchanger (1), and the shell of the enamel plate heat exchanger (1) is made of stainless steel.
3. The novel efficient waste heat recycling and smoke whitening integrated device according to claim 2, wherein a plurality of partition plates (16) are arranged inside the heat exchanger (1) in parallel along the smoke flowing direction, the partition plates (16) are uniformly arranged at intervals, and the partition plates (16) are made of stainless steel.
4. The novel efficient waste heat recycling and smoke whitening integrated device according to claim 1, wherein the number of the air inlets (11), the number of the air outlets (12) and the number of the plate-type air pipes are two or more, the two or more air inlets (11) and the two or more air outlets (12) are respectively and oppositely arranged on the side wall of the heat exchanger (1), and the two or more plate-type air pipes are respectively and correspondingly arranged with the two or more air inlets (11) and the two or more air outlets (12).
5. The novel efficient waste heat recycling and smoke whitening integrated device according to claim 4, wherein the number of the first fans (2) is two or more, and the two or more first fans (2) are respectively and correspondingly arranged at the two or more air inlets (11) and used for blowing external clean air into the plate-type air pipes in the heat exchanger (1).
6. The novel efficient waste heat recycling and smoke whitening integrated device according to claim 5, wherein a second fan (9) is further disposed on the smoke exhaust duct (5) and used for extracting the smoke subjected to heat exchange in the heat exchanger (1) and exhausting the smoke subjected to heat exchange into the exhaust funnel (6) through the smoke exhaust duct (5).
7. The novel efficient waste heat recycling and flue gas whitening integrated device according to claim 6, wherein the first fan (2) is an axial flow fan, and the second fan (9) is an induced draft fan.
8. The novel high-efficiency waste heat recycling and flue gas whitening integrated device according to claim 1, it is characterized in that the alkali liquor neutralization component (8) comprises an alkali liquor unloading pump (81), an alkali liquor storage tank (82) and an automatic medicine feeding pump (83), the liquid inlet end of the alkali liquor unloading pump (81) is communicated with an external alkali transport vehicle by the connecting pipe, the liquid outlet end is communicated with the alkali liquor storage tank (82) by the connecting pipe, is used for pumping alkali liquor in the external alkali transport vehicle into the alkali liquor storage tank (82), the liquid inlet end of the automatic dosing pump (83) is communicated with the alkali liquor storage tank (82) by utilizing the connecting pipe, the liquid outlet end is communicated with the condensed water tank (71) by utilizing the connecting pipe, is used for pumping the alkali liquor in the alkali liquor storage tank (82) into the condensed water tank (71) so as to neutralize the PH value of the condensed liquid in the condensed water tank (71).
9. The novel efficient waste heat recycling and flue gas whitening integrated device according to any one of claims 1-8, further comprising a plurality of instrument control units (10) and a PLC control cabinet (20), wherein the plurality of instrument control units (10) are respectively and uniformly arranged on the exhaust duct (4), the exhaust duct (5) and the exhaust funnel (6) and used for monitoring the temperature and pressure in the exhaust duct (4), the exhaust duct (5) and the exhaust funnel (6), the PLC control cabinet (20) is arranged outside the heat exchanger (1), and the PLC control cabinet (20) is in signal connection with the plurality of instrument control units (10), the first fan (2), the second fan (9) and the condensate water conveying pump (72).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010753487.6A CN111974182A (en) | 2020-07-30 | 2020-07-30 | Novel high-efficient waste heat retrieval and utilization and flue gas take off white integrated device |
| PCT/CN2021/087987 WO2022021951A1 (en) | 2020-07-30 | 2021-04-19 | New efficient waste heat recycling and flue gas white smoke removal integrated device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010753487.6A CN111974182A (en) | 2020-07-30 | 2020-07-30 | Novel high-efficient waste heat retrieval and utilization and flue gas take off white integrated device |
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| CN111974182A true CN111974182A (en) | 2020-11-24 |
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| CN202010753487.6A Pending CN111974182A (en) | 2020-07-30 | 2020-07-30 | Novel high-efficient waste heat retrieval and utilization and flue gas take off white integrated device |
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| CN (1) | CN111974182A (en) |
| WO (1) | WO2022021951A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113144841A (en) * | 2021-02-22 | 2021-07-23 | 中国石油天然气集团有限公司 | Smoke rain and white elimination equipment and method |
| WO2022021951A1 (en) * | 2020-07-30 | 2022-02-03 | 浙江开尔新材料股份有限公司 | New efficient waste heat recycling and flue gas white smoke removal integrated device |
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| CN114777147A (en) * | 2022-03-28 | 2022-07-22 | 中国恩菲工程技术有限公司 | Smoke whitening method and device |
| CN115007315B (en) * | 2022-06-21 | 2024-08-16 | 中国环境科学研究院 | System for eliminating condensable particulate matters and white smoke plume in wet desulfurization flue gas |
| CN117123018B (en) * | 2023-08-25 | 2024-05-24 | 昆明理工大学 | Flue gas deep whitening, purifying and water resource recycling system utilizing environmental cold energy |
| CN117771900B (en) * | 2024-02-01 | 2024-06-07 | 绍兴恒辉节能科技有限公司 | Industrial waste gas tail end whitening equipment and waste gas treatment process |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2598937B1 (en) * | 1986-05-22 | 1988-08-19 | Gaz De France | METHOD AND INSTALLATION FOR DEWATERING SMOKE BEFORE THEIR EVACUATION |
| CN204593428U (en) * | 2015-04-27 | 2015-08-26 | 董骏鹏 | Boiler low-temperature fume waste-heat recovery device |
| CN105805768A (en) * | 2016-05-19 | 2016-07-27 | 洛阳瑞昌石油化工设备有限公司 | Energy saving and environmental protecting equipment and process for reducing white smoke in flue gas |
| CN109045953B (en) * | 2018-10-16 | 2023-10-24 | 西安交通大学 | Flue gas cooling, condensing, dehumidifying, decontaminating, reheating and whitening system and method |
| CN209092912U (en) * | 2018-11-07 | 2019-07-12 | 天津市生态环境监测中心 | A kind of removal of high-humidity gas fume particulate matter takes off white system |
| CN111974182A (en) * | 2020-07-30 | 2020-11-24 | 浙江开尔新材料股份有限公司 | Novel high-efficient waste heat retrieval and utilization and flue gas take off white integrated device |
-
2020
- 2020-07-30 CN CN202010753487.6A patent/CN111974182A/en active Pending
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2021
- 2021-04-19 WO PCT/CN2021/087987 patent/WO2022021951A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022021951A1 (en) * | 2020-07-30 | 2022-02-03 | 浙江开尔新材料股份有限公司 | New efficient waste heat recycling and flue gas white smoke removal integrated device |
| CN113144841A (en) * | 2021-02-22 | 2021-07-23 | 中国石油天然气集团有限公司 | Smoke rain and white elimination equipment and method |
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| Publication number | Publication date |
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| WO2022021951A1 (en) | 2022-02-03 |
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