CN208920088U - A kind of flue gas dehumidifying and water-recorvery apparatus using the cooling cooling supply of indirect evaporation type - Google Patents
A kind of flue gas dehumidifying and water-recorvery apparatus using the cooling cooling supply of indirect evaporation type Download PDFInfo
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- CN208920088U CN208920088U CN201821323686.8U CN201821323686U CN208920088U CN 208920088 U CN208920088 U CN 208920088U CN 201821323686 U CN201821323686 U CN 201821323686U CN 208920088 U CN208920088 U CN 208920088U
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Abstract
The utility model discloses a kind of flue gas dehumidifying using the cooling cooling supply of indirect evaporation type and water-recorvery apparatus, the exhaust gases passes being connected to including one end with flue gas boiler emission mouth, the other end of exhaust gases passes is sequentially communicated the exhaust gases passes of gas-water heat exchanger, again the dry flue gas channel of heat-heat exchanger, wet desulphurization tower, the exhaust gases passes of flue gas-air sensible heat exchanger, the dry passage of indirect evaporation cooler and the saturated flue gas channel of heat-heat exchanger again, then the outlet in saturated flue gas channel of heat-heat exchanger is communicated with the atmosphere.The import of air-obvious heat of smoke exchanger air duct is connected to outdoor air, has the nozzle being connected to water circulating pump, the import of wet channel and the outlet of air duct in the wet channel of indirect evaporation cooler, outlet is communicated with the atmosphere.Depth cooling and dehumidifying can be carried out to saturated flue gas using the utility model device, solve the environmental problems such as haze, local acid rain, sour ice caused by due to humidity of flue gas is big.
Description
Technical field
The utility model relates to air contaminant treatment fields.In particular to boiler smoke dehumidifies, and eliminates steam, administers mist
Haze.
Background technique
China's boiler is based on fire coal, and 2014, coal fired power generation 3,951,000,000,000 kilowatt hour in China's accounted for about thermal power output
The 70.5% of 93.5%, Zhan Quanguo total power generation.Coal fired power generation needs to carry out desulfurization, at present major part coal-burning boiler using
Wet desulfurization methods desulfurization.Humidity of flue gas after wet type desulfurizing is in 80~100g/kg, and temperature is at 45~60 degrees Celsius, flue gas
It is in a saturated state.In winter, saturated flue gas is mixed from when smoke stack emission with outdoor cold air.Outside air temperature it is low with
Under the high double action of humidity of flue gas, gas mixing graph has passed through the saturated air line on psychrometric chart, causes fogging existing
As, the vapor in flue gas, which has little time to be uniformly mixed with outdoor air, is just condensed into fine water droplet, i.e. the white plume of throat, and
Cause the environmental problems such as " chimney rain ", " gypsum rain ".Meanwhile the fine water droplet being condensed out provides condensation for the particulate matter in atmosphere
Core forms haze, aggravates air pollution.Moreover, the water mist formed in high-altitude, hinders the diffusion of pollutant, further
Aggravate haze.
Disappear white demisting it is necessary to guarantee smoke stack emission flue gas and outdoor air blend it is (i.e. mixed without " fog-zone "
It closes graph and is not passed through saturated air line).There are two the reason of " fog-zone ", first is that flue gas and the outdoor air temperature difference are small, one
It is that humidity of flue gas is big.Therefore existing disappear empty-handed section has two major classes, and one kind is to improve smog discharge temperature, reduces the phase of flue gas
To humidity；Another kind of is the water capacity for reducing flue gas.Disappear empty-handed section of major technique of the first kind is that flue gas reheat rises, and is claimed in the industry
GGH (Gas-Gas Heater) is that the saturated flue gas after desulfurization is warming up to 80 DEG C or more to discharge.Second class disappears empty-handed section of master
It wants technology to have: 1) using solution dehumidification, regenerating heat source using fume waste heat as solution；2) it is dehumidified, is utilized using solid absorption
Fume waste heat is as solid regenerated heat source；3) it is dehumidified using heat pump refrigerating；4) it is dehumidified using open absorption heat pump.
From dehumidifying disappear it is white in terms of compare, GGH method only reduces relative humidity, does not reduce water capacity；Solid absorption and liquid are inhaled
It receives except flue gas can be down to 50~60g/Nm by wet process3, dehumidifying rate is 50% or so；Heat pump refrigerating can by the near dew point of flue gas with
Under, dehumidifying rate will consume a large amount of electric energy up to 80%.From energy angle changing rate, other than the energy consumption of blower, the reheating of GGH
Amount come from fume waste heat, solid, liquid dehumidifying reactivation heat also come from fume waste heat.Solution pump in liquid solution dehumidifying is also
A part of pump work need to be consumed, heat-pump dehumidification needs extraneous input additional electrical energy.
Summary of the invention
The shortcomings that the purpose of the utility model is to overcome prior arts provides one kind and takes into account energy-saving and environmental protection and economic fortune
Flue gas dehumidifying and the water-recorvery apparatus that cooling supply is cooled down using indirect evaporation type that be capable and can guarantee system stability.
The technical scheme adopted by the utility model is
A kind of flue gas dehumidifying and water-recorvery apparatus using the cooling cooling supply of indirect evaporation type of the utility model, including one end
The exhaust gases passes being connected to flue gas boiler emission mouth, the other end of the exhaust gases passes are sequentially communicated gas-water heat exchanger
The dry flue gas channel of exhaust gases passes, again heat-heat exchanger, wet desulphurization tower, flue gas-air sensible heat exchanger exhaust gases passes,
The dry passage for connecing devaporizer and the saturated flue gas channel of heat-heat exchanger, then the saturated flue gas channel of heat-heat exchanger again
Outlet be communicated with the atmosphere by discharge pipe；Entrance and the municipal administration heat of the heat transferring medium pipeline of the gas-water heat exchanger
The return pipe in the network of rivers is connected, and heat transferring medium pipe outlet is connected with the water supplying pipe of municipal hot water network；It is aobvious in the air-flue gas
Air duct is installed, the import of the air duct is connected to outdoor air, in the indirect evaporation in heat exchanger
Wet channel is installed in cooler, the nozzle with circulating water pipeline outlet is installed in the wet channel, it is described
The import of wet channel is connected to the outlet of air duct by connecting line, and the outlet of the wet channel is communicated with the atmosphere.With
The prior art is compared, the utility model has the following beneficial effects:
Flue gas carries out depth dehumidifying in the equipment, can make flue gas dehumidifying discharge, reduce " chimney rain ", " gypsum rain ", " office
The generation of portion's acid rain " and haze.The utility model area of application range is wide, is applicable to 40 ° of latitude or less (outside air temperatures
Higher than subzero 20 DEG C) area.And application type is wide, the saturated flue gas dehumidifying after being applicable not only to coal-burning boiler desulfurization is also fitted
Flue gas for combustion gas, oil burning boiler dehumidifies.The technique combined using Exchange of apparent heat with indirect evaporating-cooling, makes full use of the winter
Season outdoor cold source cooling capacity, two steps dehumidifying, accomplish depth dehumidify.And the flue gas after waste heat reheat dehumidification is made full use of, and prepare
Hot water.In addition, the condensed water that recycling dehumidifying is precipitated, partially the moisturizing source as indirect evaporating-cooling circulation water spray, is partially used for
Other process waters save water resource.Process flow, equipment are simple, invest small.
Detailed description of the invention
Fig. 1 is a kind of structure of flue gas dehumidifying and water recovery device using the cooling cooling supply of indirect evaporation type of the utility model
Schematic diagram.
Specific embodiment
The utility model is illustrated in the following with reference to the drawings and specific embodiments.
The a kind of of the utility model as shown in Figure 1 is set using the flue gas dehumidifying and water recycling of the cooling cooling supply of indirect evaporation type
Standby, including the exhaust gases passes that one end is connected to 1 discharge outlet of flue gas boiler, the other end of the exhaust gases passes is sequentially communicated cigarette
The exhaust gases passes of air-water heat exchanger 2, the dry flue gas channel of reheating heat exchanger 3, wet desulphurization tower 4, flue gas-air sensible heat change
The saturated flue gas channel of the exhaust gases passes of hot device 5, the dry passage of indirect evaporation cooler 6 and reheating heat exchanger 3, reheating heat
The outlet in the saturated flue gas channel of exchanger 3 is communicated with the atmosphere by discharge pipe.
The entrance of the heat transferring medium pipeline of the gas-water heat exchanger 2 is connected with the return pipe of municipal hot water network, exchanges heat
Medium pipeline outlet is connected with the water supplying pipe of municipal hot water network.
Air duct, the import of the air duct and room are installed in the air-obvious heat of smoke exchanger 5
Outer air communication is equipped with wet channel in the indirect evaporation cooler 6, is equipped with and recycles in the wet channel
The nozzle of waterpipe outlet sprays circulation desulfurization water with the outdoor air I into wet channel, and cooling air, described is wet logical
The import in road is connected to the outlet of air duct by connecting line, and the outlet of the wet channel is communicated with the atmosphere.
As a kind of preferred embodiment of the utility model, in the air-obvious heat of smoke exchanger 5 shell
Interior parallel interval is equipped with multiple exchanger partitions, and multiple exchanger partitions are by air-obvious heat of smoke exchanger 5 shell
Body is divided into multiple channels independent of each other, and multiple channels are alternatively set as the air-obvious heat of smoke exchanger 5
Air duct and exhaust gases passes, heat exchange wall surface of the multiple exchanger partitions between air duct and exhaust gases passes.
Along the direction parallel with flow of flue gas direction, parallel interval is installed in the shell of the indirect evaporation cooler
There are multiple cooler partitions, the shell of indirect evaporation cooler is divided into independent of each other more by multiple cooler partitions
A channel, multiple channels are alternatively set as the wet channel and dry passage of the indirect evaporation cooler, and described is more
Heat exchange wall surface of a cooler partition between wet channel and dry passage.
It is further preferred that the inlet and outlet of the wet channel of the indirect evaporation cooler 6 are arranged along the vertical direction, air
The air of channel outflow enters wet channel from wet channel bottom inlet and flows out from wet channel top exit, the dry passage
Import and export horizontally disposed, increase heat exchange area, enhancing heat transfer effect.
Still further preferably, it is (nylon, viscose glue, eyeball synthetic fibre, artificial that the good villus of water imbibition is implanted on wet channel inner wall
Fiber etc.), increase heat exchange area, enhancing heat exchange.
Still further preferably, the entrance of a hydrotreater 8 by pipeline respectively with the shell of indirect evaporation cooler
The housing bottom of bottom and flue gas-air sensible heat exchanger is connected logical to collect air-obvious heat of smoke exchange system flue gas
The condensed water in condensed water and indirect evaporating-cooling system dry passage in road, the outlet of the hydrotreater 8 passes through dress
There is the pipeline of water circulating pump 7 to be connected with the circulating water pipeline to provide the moisturizing of recirculated water.
The work course of the present apparatus is as follows:
Flue gas A after flue gas boiler 1 discharges successively is recycled as follows by exhaust gases passes:
(1) enter flue gas-hot water heat exchanger 2 and cold water heat exchange prepares hot water, used for heating；Later, the cigarette after cooling
Gas B enters reheating heat exchanger 3, with the saturated flue gas F heat exchange further cooling after dehumidifying；
(2) the flue gas C further after cooling enters 4 desulfurization of wet desulphurization tower cooling；The saturation come out from wet desulphurization tower
Flue gas D, is introduced into air-obvious heat of smoke exchange system 5 and outdoor cold air H carries out Exchange of apparent heat, cooling that partial condensation is precipitated
Water is tentatively dehumidified, and the flue gas E after preliminary dehumidifying enters back into the dry passage of indirect evaporating-cooling system 6, the quilt in dry passage
It is further cooling, vapor is precipitated and forms the saturated flue gas F after dehumidifying, reaches the water capacity of flue gas emission not fogging, precipitation
Vapor forms condensed water；Flue gas B of the saturated flue gas F after reheating heat exchanger 3 and the cooling after dehumidifying exchanges heat,
The temperature that flue gas G does not form white haze after discharging is reheated to be discharged；
The cooling flue gas that partial condensation water is precipitated of Exchange of apparent heat enters the indirect evaporating-cooling system by further cold
But method are as follows: the outdoor cold air I after (a) progress Exchange of apparent heat enters the wet channel in indirect evaporating-cooling system 6；(b)
It is mounted on outdoor air I spray circulation desulfurization water of the nozzle being connected in wet channel and with circulating water outlet into wet channel, it is cooling
Air；(c) air in wet channel exchanges heat while cooling with the flue gas E after the preliminary dehumidifying in dry passage, makes in dry passage
Flue gas E after preliminary dehumidifying is further cooled down, and vapor is precipitated.
Claims (6)
1. a kind of utilize the flue gas dehumidifying of the cooling cooling supply of indirect evaporation type and water-recorvery apparatus, it is characterised in that: including one end with
The exhaust gases passes of flue gas boiler emission mouth connection, the other end of the exhaust gases passes are sequentially communicated the cigarette of gas-water heat exchanger
The dry flue gas channel of gas channel, again heat-heat exchanger, wet desulphurization tower, exhaust gases passes of flue gas-air sensible heat exchanger, indirectly
The saturated flue gas channel of the dry passage of devaporizer and again heat-heat exchanger, then the saturated flue gas channel of heat-heat exchanger
Outlet is communicated with the atmosphere by discharge pipe；The entrance of the heat transferring medium pipeline of the gas-water heat exchanger and municipal hot water
The return pipe of net is connected, and heat transferring medium pipe outlet is connected with the water supplying pipe of municipal hot water network；In the air-obvious heat of smoke
Air duct is installed, the import of the air duct is connected to outdoor air, cold in the indirect evaporation in exchanger
But wet channel is installed in device, the nozzle with circulating water pipeline outlet is installed in the wet channel, described is wet
The import in channel is connected to the outlet of air duct by connecting line, and the outlet of the wet channel is communicated with the atmosphere.
2. the flue gas dehumidifying and water-recorvery apparatus according to claim 1 using the cooling cooling supply of indirect evaporation type, feature
Be: parallel interval is equipped with multiple exchanger partitions in the air-obvious heat of smoke exchanger shell, and described is more
Air-obvious heat of smoke exchanger shell is divided into multiple channels independent of each other by a exchanger partition, and described is multiple logical
Road is alternatively set as air-obvious heat of smoke exchanger air duct and exhaust gases passes, multiple exchangers every
Heat exchange wall surface of the plate between air duct and exhaust gases passes；Along the direction parallel with flow of flue gas direction, described indirect
Parallel interval is equipped with multiple cooler partitions in the shell of devaporizer, and multiple cooler partitions are by indirect evaporation
The shell of cooler is divided into multiple channels independent of each other, and it is cold that multiple channels are alternatively set as the indirect evaporation
But the wet channel and dry passage of device, heat exchange wall surface of the multiple cooler partitions between wet channel and dry passage.
3. the flue gas dehumidifying and water-recorvery apparatus according to claim 2 using the cooling cooling supply of indirect evaporation type, feature
Be: the inlet and outlet of the wet channel of the indirect evaporation cooler are arranged along the vertical direction, air duct outflow air from
Wet channel bottom inlet enters wet channel and flows out from wet channel top exit, and the inlet and outlet of the dry passage are in the horizontal direction
Setting.
4. the flue gas dehumidifying described in one of -3 using the cooling cooling supply of indirect evaporation type and water-recorvery apparatus according to claim 1,
It is characterized by: being implanted with the good villus of water imbibition on the wet channel inner wall.
5. the flue gas dehumidifying and water-recorvery apparatus according to claim 4 using the cooling cooling supply of indirect evaporation type, feature
Be: the good villus of the water imbibition is one of nylon, viscose glue, eyeball synthetic fibre or staple fibre.
6. the flue gas dehumidifying and water-recorvery apparatus according to claim 4 using the cooling cooling supply of indirect evaporation type, feature
Be: the entrance of a hydrotreater is aobvious with the housing bottom of indirect evaporation cooler and flue gas-air respectively by pipeline
The housing bottom of heat exchanger is connected to collect condensed water in air-obvious heat of smoke exchange system exhaust gases passes and indirectly
Condensed water in evaporative cooling system dry passage, the outlet of the hydrotreater by pipeline equipped with water circulating pump with it is described
Circulating water pipeline be connected to provide circulating cooling make-up water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821323686.8U CN208920088U (en) | 2018-08-16 | 2018-08-16 | A kind of flue gas dehumidifying and water-recorvery apparatus using the cooling cooling supply of indirect evaporation type |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821323686.8U CN208920088U (en) | 2018-08-16 | 2018-08-16 | A kind of flue gas dehumidifying and water-recorvery apparatus using the cooling cooling supply of indirect evaporation type |
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| CN208920088U true CN208920088U (en) | 2019-05-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375561A (en) * | 2019-07-02 | 2019-10-25 | 赵耀华 | White air cooling system is removed in a kind of flue gas or steam exhaust dehydration |
-
2018
- 2018-08-16 CN CN201821323686.8U patent/CN208920088U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375561A (en) * | 2019-07-02 | 2019-10-25 | 赵耀华 | White air cooling system is removed in a kind of flue gas or steam exhaust dehydration |
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