CN109772071A - White plume based on upper spray upper air spray column eliminates system - Google Patents
White plume based on upper spray upper air spray column eliminates system Download PDFInfo
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- CN109772071A CN109772071A CN201910216400.9A CN201910216400A CN109772071A CN 109772071 A CN109772071 A CN 109772071A CN 201910216400 A CN201910216400 A CN 201910216400A CN 109772071 A CN109772071 A CN 109772071A
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Abstract
The present invention relates to a kind of white plumes based on upper spray upper air spray column to eliminate system, including spraying subsystem, treatment subsystem, heat pump subsystem, water cycle subsystem, flue gas reheat subsystem, the spraying layer and the second water pump that water spray subsystem is made of multiple nozzles are formed；Treatment subsystem is connected to form by filtering ponds and dispensing pond；Heat pump subsystem is made of compressor, evaporator, throttle valve, the condenser successively contacted；Cooling water cycle subsystem is made of pond, the first water pump and connecting pipe；Flue gas reheat subsystem is made of air heater, blower and mixed wind and smoke road；The spraying layer of multiple nozzle compositions is arranged in spray column, and cooling water cycle subsystem and heat pump subsystem are connected by the second water pump, the mixed flue gas outlet of the hot air outlet connection spray column of condenser, the condensed water of spray column connects treatment subsystem, the evaporator in dispensing pond connection heat pump subsystem with the outlet of cooling water；Blower connects the condenser in heat pump subsystem.
Description
Technical field
The present invention relates to a kind of enterprises such as coal-burning power plant, steel plant boiler emission smoke processing systems, and in particular to a kind of
White plume eliminates system.
Background technique
The coal-burning power plant of 85% or more the country and the fume treatment of steel sintering take wet desulfurizing process, discharge it is wet
Flue-gas temperature is at 45~55 DEG C, and water capacity is close to saturation state.Low temperature saturation wet flue gas is lower with temperature directly through smoke stack emission
Ambient air mixing, a large amount of vapor is condensed into droplet to the cold in flue gas, refraction or scattering process through light, flue gas
White or canescence is presented, i.e., so-called " white plume ", causing apparent visual pollution, (this phenomenon is especially bright in winter
It is aobvious), while also influencing surrounding resident normal life.It becomes increasingly conspicuous in addition, wet desulfurizing process water resources consumption amount also becomes greatly
The problem of.
White plume, which eliminates common technique approach, heating dehumidifying, dehumidification by condensation, solution dehumidification and whirlwind dehumidifying etc..Heating
The main high-temperature flue gas by before desulfurization that dehumidifies heats the low-temperature flue gas after desulfurization, such as common GGH heat exchanger, however reality is transported
It will appear flue gas leakage in row, cause to discharge flue gas pollutant severe overweight.Also some other dividing wall type heat exchanger application,
Such as heat exchange of heat pipe, the problems such as plate heat exchanger etc. will appear equipment corrosion for condensing flue gas in operation, fouling slagging,
Lead to heat exchange efficiency degradation, and the problem that the generally existing heat exchange area of dividing wall type heat exchanger is limited；Spray in desulfurizing tower
Condensation is that a set of water sprinkler system is installed inside desulfurizing tower, this will lead to desulfurizing tower excessive height, and system flow resistance increases,
Increase fan energy consumption, operating cost is very high；Flue condensation eliminating white smoke is to reduce desulfurization in desulfurizing tower exhaust pass installation heat exchanger
The method that exit gas temperature reduces humidity of flue gas, and then eliminates white wet plume, but the material of this method heat exchanging device
It is more demanding, but improvement project amount is larger, higher cost, while the heat exchanger of desulfurizing tower outlet easily corrodes leakage, it is economical
Property is poor.The effect of solution dehumidification is better than pure water, but is at present experimental study, not yet applies.Whirlwind dehumidifying is in cigarette
Swirl vane is set inside chimney, forms a spiral helicine flow field inside chimney, the droplet perikinetic aggregation in flue gas becomes larger,
Centrifugal action removes liquid water droplets, and the system dehumidification white effect that disappears is limited, and increases the running resistance of whole system.
Summary of the invention
It is an object of that present invention to provide a kind of white plumes based on upper spray upper air spray column to eliminate system, using water
The mode for spraying condensation carries out moisture recycling to desulfurization fume, and heats to the flue gas after cooling, in upper spray upper air
In the water cooling tower of mode, due to flue gas and spray water direct contact heat-exchanging, so the heat and mass between gas and liquid
It is high-efficient.When spray column of the flue gas by upper spray upper air, flue gas is contacted with spray droplet, realizes the cooling of flue gas, cold
Coagulating the water to get off can be used for desulphurization system or other technique moisturizings, save a large amount of water, while the pollutant in flue gas can enter
The purpose of multi-pollutant joint removing is realized into condensed water.
The purpose of the present invention is achieved through the following technical solutions:
A kind of white plume elimination system based on upper spray upper air spray column, including spray column, spray subsystem, water
Processing subsystem, heat pump subsystem, water cycle subsystem, flue gas reheat subsystem, the water spray subsystem is by multiple nozzles
The spraying layer of composition and the second water pump composition；The treatment subsystem is connected to form by filtering ponds and dispensing pond；The heat pump
Subsystem is made of compressor, evaporator, throttle valve, the condenser successively contacted；The cooling water cycle subsystem by pond,
First water pump and connecting pipe composition；The flue gas reheat subsystem is made of air heater, blower and mixed wind and smoke road；It is multiple
The spraying layer of nozzle composition is arranged in spray column, and connects cooling water cycle subsystem and heat pump subsystem by the second water pump
System, the mixed flue gas outlet of the hot air outlet connection spray column of the condenser in heat pump subsystem, the condensed water of spray column and
The outlet of cooling water connects treatment subsystem, the evaporator in dispensing pond connection heat pump subsystem in treatment subsystem；
The condenser in blower connection heat pump subsystem in flue gas reheat subsystem.
Further, strong heat and mass mistake occurs in spray column for the cooling water droplet and flue gas that the nozzle sprays
Journey, condensed water and cooling water enter in treatment subsystem, are filtered and adjust pH value, treated, and water purification enters heat pump
Subsystem is heated air by the heat of heat pump subsystem recycle-water, and after flue gas reheat subsystem, temperature increases air,
After mixing hot wind and flue gas after cooling, gas phase reduces water capacity, and discharge does not occur white cigarette phenomenon.
Further, the condensed water after handling, cooling down is sent into cooling water cycle subsystem by the treatment subsystem,
Extra condensation water collection is got up by tank.
Compared with prior art, the invention has the following advantages that
(1) mode that upper air inlet is sprayed on enhances the exchange capability of heat of spray column, meanwhile, system can be according to ambient atmosphere temperature
Degree changes the heat exchange area of the flow or heat pump subsystem evaporator that are passed through nozzle, to reach the mesh for adjusting smog discharge temperature
's.Spray condensation reduces the absolute moisture content of flue gas, the heat air then recycled by heat pump system, hot-air and
The mixing of flue gas reduces the opposite water capacity of flue gas, can eliminate " white plume " phenomenon substantially in this way.The water condensed out
It can be used for desulphurization system or other technique moisturizings, significant effect of saving water and energy.
(2) when the vapor in flue gas comes under condensation, for particulate matter, SO3, the pollutants such as aerosol also have one
Fixed removing effect, therefore the sour gas in flue gas makes condensed water in acidity, shower water just dilutes condensed water, reduces
The requirement for anticorrosion of equipment, has saved cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that the white plume based on upper spray upper air spray column eliminates system；
In figure: 1- blower；2- compressor；3- condenser；4- throttle valve；5- evaporator；6- dispensing pond；7- filtering ponds；8-
First water pump；9- tank；The second water pump of 10-；11- nozzle；12- spray column.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, the white plume of the invention based on upper spray upper air spray column eliminates system, it mainly include wind
Machine 1, compressor 2, condenser 3, throttle valve 4, evaporator 5, dispensing pond 6, filtering ponds 7, the first water pump 8, tank 9, the second water
The components such as pump 10, nozzle 11, spray column 12, there are also corresponding connecting pipe and control units.
The spraying layer and the second water pump 10 of multiple nozzle (11) compositions form water spray subsystem；Filtering ponds 7 and dispensing pond 6
It is connected to form treatment subsystem；Compressor 2, evaporator 5, throttle valve 4, condenser 3 successively contact and form heat pump subsystem；Storage
Pond 9, the first water pump 8 and connecting pipe form cooling water cycle subsystem；Air heater, blower 1 and mixed wind and smoke road composition
Flue gas reheat subsystem.
Wherein, the spraying layer of multiple nozzles (11) composition is arranged in spray column 12, and is connected by the second water pump 10 cold
But water cycle subsystem and heat pump subsystem, the hot air outlet connection spray column 12 of the condenser 3 in heat pump subsystem it is mixed
Exhanst gas outlet is closed, the condensed water of spray column 12 connects treatment subsystem with the outlet of cooling water, the throwing in treatment subsystem
Medicine pond 6 connects the evaporator 5 in heat pump subsystem.Blower 1 in flue gas reheat subsystem connects the condensation in heat pump subsystem
Device 3.
Nozzle 11 spray cooling water droplet and flue gas occur strong heat and mass transfer process, condensed water and cooling water into
Enter to the treatment subsystem being made of filtering ponds 7 and dispensing pond 6, is filtered and adjusts pH value, water purification that treated enters
The heat of the heat pump subsystem formed by compressor 2, evaporator 5, condenser 3 and throttle valve 4 series winding, heat pump system recycle-water comes
Air is heated, air is after the flue gas reheat subsystem being made of air heater 3, blower 1 and mixed wind and smoke road, air themperature
It increases, after hot wind and flue gas after cooling mixing, gas phase substantially reduces water capacity, hardly occurs after smoke stack emission white
Cigarette phenomenon.Recirculated cooling water enters the cooling water being made of tank 9, the first water pump 8 and connecting pipe after handling, cooling down
Cycle subsystem, extra cooling water can be used for other techniques.
The working principle of this system are as follows:
(1) when system just brings into operation, desulfurization fume enters spray column from horizontal flue, and water pump is by the water pump in tank
It is sent to nozzle, spraying layer starts to spray water, and spray droplet is in contact with desulfurization fume, carries out strong heat and mass, flue gas temperature
Degree reduces, vapor condensation, and the sour gas and dust in flue gas are assembled in droplet surface, then shower water, condensed water
The pond of spray tower bottom is dropped to impurity.Mixing water in pond enters water treatment system, carries out filtering and the acid of impurity
The adjusting of basicity pH value, the evaporator that the water after then processing enters heat pump system cool down, and recycle heat, finally cool down
Liquid enters tank and completes a circulation, and the heat of evaporator recycling is used to heat air in heat pump system, then hot-air
It is mixed with the flue gas of cooling, further decreases the opposite water capacity of gaseous mixture, then be discharged by chimney.
(2) after system operation a period of time, the water to cool down fully meets system cooling water circulation after treatment
It needs, after the pond below spray column reaches safety level, tank gets up extra condensation water collection, is used for other works
Skill can save a large amount of water.
The present invention reduces flue gas pollutant content while recycling great lot of water resources and waste heat.Core of the invention
Be the arrangement sprayed on upper air and and heat pump system combination, (such as flue gas and heat are empty for small change on this basis
The mixed wind position of gas, nozzle quantity, the type for changing compressor etc.) in the invention patent protection scope.
Claims (3)
1. a kind of white plume based on upper spray upper air spray column eliminates system, including spray column, spray subsystem, Shui Chu
Manage subsystem, heat pump subsystem, water cycle subsystem, flue gas reheat subsystem, it is characterised in that: the water spray subsystem by
The spraying layer and the second water pump composition of multiple nozzle compositions；The treatment subsystem is connected to form by filtering ponds and dispensing pond；
The heat pump subsystem is made of compressor, evaporator, throttle valve, the condenser successively contacted；The cooling water recycles subsystem
System is made of pond, the first water pump and connecting pipe；The flue gas reheat subsystem is by air heater, blower and mixed wind and smoke road
Composition；The spraying layer of multiple nozzles composition is arranged in spray column, and by the second water pump connect cooling water cycle subsystem and
Heat pump subsystem, the mixed flue gas outlet of the hot air outlet connection spray column of the condenser in heat pump subsystem, spray column
Condensed water connects treatment subsystem with the outlet of cooling water, in the dispensing pond connection heat pump subsystem in treatment subsystem
Evaporator；The condenser in blower connection heat pump subsystem in flue gas reheat subsystem.
2. the white plume according to claim 1 based on upper spray upper air spray column eliminates system, it is characterised in that:
Strong heat and mass transfer process, condensed water and cooling occur in spray column for the cooling water droplet and flue gas that the nozzle sprays
Water enters in treatment subsystem, is filtered and adjusts pH value, and treated, and water purification enters heat pump subsystem, by heat pump
The heat of system recycle-water heats air, and after flue gas reheat subsystem, temperature increases air, makes hot wind and after cooling
After flue gas mixing, gas phase reduces water capacity, and discharge does not occur white cigarette phenomenon.
3. the white plume according to claim 2 based on upper spray upper air spray column eliminates system, it is characterised in that:
Condensed water after handling, cooling down is sent into cooling water cycle subsystem by the treatment subsystem, will be extra by tank
Condensation water collection get up.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910216400.9A CN109772071A (en) | 2019-03-21 | 2019-03-21 | White plume based on upper spray upper air spray column eliminates system |
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| CN201910216400.9A CN109772071A (en) | 2019-03-21 | 2019-03-21 | White plume based on upper spray upper air spray column eliminates system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110542111A (en) * | 2019-08-23 | 2019-12-06 | 山东泓奥电力科技有限公司 | Boiler low temperature flue gas treatment system |
| CN110935279A (en) * | 2019-12-19 | 2020-03-31 | 济宁明升新材料有限公司 | Heat pump type white smoke eliminating device and method thereof |
| CN111412473A (en) * | 2020-03-31 | 2020-07-14 | 江苏大学 | Gasification combustion utilization method and system suitable for high-humidity solid waste material |
| CN112093954A (en) * | 2019-06-17 | 2020-12-18 | 绵阳吉华环境工程技术有限公司 | Concentration and separation device for air contact circulating wastewater |
| CN112915746A (en) * | 2019-12-05 | 2021-06-08 | 山东泰开环保科技有限公司 | Automatic dosing device based on smoke plume depth treatment |
| CN112915703A (en) * | 2021-01-22 | 2021-06-08 | 宜昌湖蓝科技开发有限公司 | Equipment for controlling condensable particles to treat colored smoke plume and using method thereof |
| CN114392639A (en) * | 2021-12-29 | 2022-04-26 | 中石化宁波工程有限公司 | Catalytic cracking flue gas waste heat utilization coupling desulfurization wet smoke and rain elimination process |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112093954A (en) * | 2019-06-17 | 2020-12-18 | 绵阳吉华环境工程技术有限公司 | Concentration and separation device for air contact circulating wastewater |
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| CN112915746A (en) * | 2019-12-05 | 2021-06-08 | 山东泰开环保科技有限公司 | Automatic dosing device based on smoke plume depth treatment |
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| CN111412473A (en) * | 2020-03-31 | 2020-07-14 | 江苏大学 | Gasification combustion utilization method and system suitable for high-humidity solid waste material |
| CN112915703A (en) * | 2021-01-22 | 2021-06-08 | 宜昌湖蓝科技开发有限公司 | Equipment for controlling condensable particles to treat colored smoke plume and using method thereof |
| CN114392639A (en) * | 2021-12-29 | 2022-04-26 | 中石化宁波工程有限公司 | Catalytic cracking flue gas waste heat utilization coupling desulfurization wet smoke and rain elimination process |
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Application publication date: 20190521 |