CN207413082U - Wet desulfurization flue gas eliminates plume system - Google Patents
Wet desulfurization flue gas eliminates plume system Download PDFInfo
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- CN207413082U CN207413082U CN201721409561.2U CN201721409561U CN207413082U CN 207413082 U CN207413082 U CN 207413082U CN 201721409561 U CN201721409561 U CN 201721409561U CN 207413082 U CN207413082 U CN 207413082U
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- flue gas
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Abstract
The utility model discloses a kind of wet desulfurization flue gas to eliminate plume system, predominantly solves the problems such as saturation wet flue gas directly discharges caused " white haze " phenomenon, causes bad visual pollution.The elimination plume system includes：Flue gas precooling zone, for carrying out precooling to flue gas；Spray condensing tower composition；For being cooled to 30~40 DEG C to flue gas by spray.Flue gas precooling zone is connected with spray condensing tower by pipeline.The system and method can effectively alleviate saturation wet flue gas and discharge formed white haze phenomenon, compared with conventional GGH heats demisting：Simple system, initial cost save, and equipment operating cost is low, and overhaul of the equipments is replaced easily.
Description
Technical field
The utility model is related to a kind of wet desulfurization flue gas to eliminate plume system.
Background technology
In saturated flue gas discharge process after wet desulphurization, since saturated flue gas and extraneous air carry out heat exchange, cigarette
Gas cools down, and saturated steam condenses into water droplet, and forms white plume, causes bad visual impact；Meanwhile flue gas low-temperature discharges
It is unfavorable for plume rise；In addition, a large amount of moisture discharges cause ambient humidity, light and temperature excessive, resident living is influenced.In order to improve flue gas
Lifting ability, mitigate plume phenomenon, many countries strictly limit exhaust gas temperature, and Germany's regulation chimney emission exports warm
For degree not less than 72 DEG C, Japan is defined as 90~110 DEG C, and Britain's regulation is not less than 80 DEG C, and the U.S. is since the eighties in last century,
FGD has begun selection Wet chimney operation, and Some Enterprises increase combustion gas (or steam) after FGD and flue gas is heated,
Form sedimentation under given conditions to avoid flue gas.
In order to avoid saturated flue gas condenses into water mist in discharge process or mitigates the condensation phenomenon of saturated flue gas, according to
The Formation and characteristics of plume, mitigating the method that plume is formed includes heating means and dehumanization method.Heating means are i.e. full by improving
And flue-gas temperature, certain superheat state discharge is reached, this method needs to consume certain high temperature heat source, unsuitable remaining
It needs to generate high-temperature flue gas using combustion gas furnace in the case of heat, causes great energy waste；Dehumanization method passes through reduction
Saturated flue gas temperature first by the Water vapor condensation part in flue gas, reduces the water capacity of flue gas again by being arranged after demisting
It puts, dehumanization method includes direct condensation and indirect heat exchange method, and indirect heat exchange usually requires to install the larger heat exchanger of volume additional, preceding
Phase Installed capital cost is high.
Utility model content
In view of the above-mentioned problems, the utility model, which provides a kind of wet desulfurization flue gas, eliminates plume system, using directly spray
Mode cools down to saturation wet flue gas, saves equipment construction investment early period and operating cost.
In order to achieve the above objectives, the utility model wet desulfurization flue gas eliminates plume system, including：
Flue gas precooling zone, for carrying out precooling to flue gas；
Spray condensing tower composition；For being cooled to 30~40 DEG C to flue gas by spray
Flue gas precooling zone is connected with spray condensing tower by pipeline.
Preferably, the precooling zone includes cooling stack, it is cold that the cooling stack is provided with first and/or second
But device and flue dust detection device；
When dust content is less than predetermined value, starts the second cooling device and flue gas is cooled down；
When dust content is more than predetermined value, starts the first cooling device and flue gas is cooled down.
Preferably, the first cooling device is the cooling nozzles being arranged in cooling stack, for by cooling circulating water forward
Or laterally spray into flue；Second cooling device is air heat exchanger.
Preferably, the spray condensing tower includes condensing tower；Pond is condensed in condensing tower lower disposed；On condensing tower
Portion is provided with more than two-stage cooling nozzles and demister；Flue gas precooling zone exhanst gas outlet is arranged in the middle part of condensing tower.
Preferably, flue gas precooling zone smoke outlet sets flue gas distributor, flue gas distributor is put down with condensation tank water face
Row is set.
Preferably, the system also includes cooling unit, cooling unit is by the condensate pump, the cooling tower that are connected by pipeline
It is formed with feeding spraying pump；Bottom is provided with water cooling pond in cooling tower；
Wherein, the condensed water in the condensation pond for spraying tower bottom is pumped into cooling tower and condensed water cools down by condensate pump；
The cooling water of water cooling pond is pumped into the cooling nozzles in condensing tower and/or cooling stack by feeding spraying pump.
Preferably, further including temperature control unit, temperature control unit includes control device and is arranged in condensing tower
Temperature sensor；
The control device is controlled as follows according to temperature：
When spraying condensing tower flue gas exit temperature higher than setting exhanst gas outlet design temperature T, output control signal makes spray
Sprinkling pump increases condensation spray column cooling nozzles water supply；
When spraying condensing tower flue gas exit temperature less than setting exhanst gas outlet design temperature T, output control signal makes spray
Sprinkling pump reduces condensation spray column cooling nozzles water supply.
The system can effectively alleviate saturation wet flue gas and discharge formed white haze phenomenon, and demisting phase is heated with conventional GGH
Than：Simple system, initial cost save, and equipment operating cost is low, and overhaul of the equipments is replaced easily.The condensing water temperature of collection 45~
50 DEG C, it can be used for local heating in winter, save heating cost and operating cost.
Description of the drawings
Fig. 1 is that the wet flue gas in the utility model embodiment 1 eliminates plume technique and system flow schematic diagram；
Fig. 2 is that the utility model wet flue gas eliminates plume technique and system flue gas distributor schematic diagram；
Fig. 3 is that the wet flue gas in the utility model embodiment 2 eliminates plume technique and system flow schematic diagram；
Fig. 4 is that the wet flue gas in the utility model embodiment 3 eliminates plume technique and system flow schematic diagram.
Specific embodiment
The utility model is further described with reference to Figure of description.
Embodiment 1
As shown in Figs. 1-2, the wet flue gas of the present embodiment eliminates plume technique and system, is condensed by flue gas precooling zone 1, spray
Tower 2, cooling tower 3, water cooling pond 4, circulation are formed.
The main purpose of flue gas precooling zone 1 is pre- cooling, and the temperature of whole system is facilitated to control, while is removed in flue gas
Solid particle, the flue-gas temperature of this section drop about 3~5 DEG C, and precooling nozzle 1.1 is arranged on flue gas precooling zone 1, is evenly distributed,
Precooling nozzle 1.1 at least arranges one layer, is supplied water by cooling water pump 6 to precooling nozzle 1.1.When dustiness is larger in flue gas, fit
When the cooling water inflow for increasing precooling nozzle, dirt particle realizes flue gas ash removal effect by drop coalescence.
Spray condensing tower 2 by tower body 2, condensation pond 2.1, drainage 2.2, condensation-water drain 2.3, gas inlet 2.4,
Flue gas distributor 2.5, cooling nozzles 2.6, demister 2.7, cooling water inlet 2.8, temperature measuring equipment 2.9, exhanst gas outlet
2.10 composition.Cooling nozzles 2.6 and demister 2.7 at least arrange 2 layers.
The flue gas containing liquid water that flue gas precooling zone 1 comes out is at gas inlet 2.4 due to the effect of centrifugal force, drop
It can impact on the outside of bend pipe wall surface, bottom condensate water pond 2.1 is dropped down onto under coalescence, realize the preliminary purification separation of gas-water drop.Cigarette
Gas after flue gas distributor 2.5 is uniformly distributed, be down to 0.5~2.5m/s and flow up by velocity of flue gas,
Cooling water with being come out from cooling nozzles 2.6 carries out heat exchange, the saturated steam cooling condensation in flue gas,
The mechanical water in flue gas is removed by demister 2.7, goes out flue gas mechanical water content≤75mg/m of demister 2.73, by spray
The exhanst gas outlet 2.10 that 2 top of condensing tower is shunk is discharged.
The condensed water out 2.3 of condensed water pressurizes into condensate pump 5, is delivered to cooling tower 3 and is cooled down, cooling water by
Cooling pond 4 is dropped down onto under gravity to be used as cooling circulating water.
Circulation is made of condensate pump 5, cooling water pump 6 and control system 7.
Exhaust gas temperature is set：Different according to environment temperature, summer exhaust gas temperature is set as 35~40 DEG C, winter exhaust gas temperature
It is set as 30 DEG C.The setting of cooling tower coolant water temperature is not higher than 33 DEG C.
When the flue-gas temperature of temperature measuring equipment 2.9 is more than design temperature, increase the water supply of cooling nozzles 2.6；When
When the flue-gas temperature of temperature measuring equipment 2.9 is less than design temperature, the water supply of cooling nozzles 2.6 is reduced.
Cooling tower 3 is usually combined by multiple monomer cooling towers and is formed in parallel, and the wind turbine of cooling tower 3 is transported in summer rated load
Row, when environment temperature is relatively low, wind turbine can open part or compared with being run under underload.
Embodiment 2
Such as Fig. 3, operation principle is same as Example 1, which substitutes cooling tower 3 by heating heat user.In winter, factory
When area needs heating, by rationally controlling water spray, ensure condensation 2.1 water temperature of pond at 45~50 DEG C, which can be with
It is used for local heating, after heat user exchanges, water temperature is down to 25 DEG C or so, sprays into spray by cooling nozzles 2.6 again
In condensing tower 2, recycle.When cold deficiency, cooling circulating water pump 6 is opened, the cooling water in cooling pond 4 is pumped together
Enter cooling nozzles 2.6, ensure flue gas exit temperature in setting range.
Embodiment 3
Such as Fig. 4, operation principle is same as Example 1, which substitutes precooling nozzle 1.1 by air heat exchanger 1.2.When
Dust content is less than 30mg/m3And when corrosive gas content is relatively low in flue gas, air heat exchanger 1.2 can be placed in flue gas
In precooling zone 1, it can be transformed in 1 pipe diameter deficiency of flue gas precooling zone, air heat exchanger 1.2 is facilitated to arrange, it is empty
Gas heats up 10 DEG C or so after air heat exchanger 1.2, and the volume flow of air is 1 times or more of flue gas flow, by heating
2 top of air mixing spray condensing tower, is discharged, this kind of mode can will condense flue gas after being mixed with condensed flue gas
Water capacity further reduces, and ensures to completely eliminate " white haze " during exhaust.
More than, the only preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto is appointed
In the technical scope that those familiar with the art discloses in the utility model, the variation that can readily occur in or replace
It changes, should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should be with claim
Subject to the protection domain defined.
Claims (7)
1. a kind of wet desulfurization flue gas eliminates plume system, it is characterised in that：The elimination plume system includes：
Flue gas precooling zone, for carrying out precooling to flue gas；
Spray condensing tower composition；For being cooled to 30~40 DEG C to flue gas by spray
Flue gas precooling zone is connected with spray condensing tower by pipeline.
2. wet desulfurization flue gas as described in claim 1 eliminates plume system, it is characterised in that：The precooling zone includes cooling
Flue is provided with the first and/or second cooling device and flue dust detection device in the cooling stack；
When dust content is less than predetermined value, starts the second cooling device and flue gas is cooled down；
When dust content is more than predetermined value, starts the first cooling device and flue gas is cooled down.
3. wet desulfurization flue gas as described in claim 1 eliminates plume system, it is characterised in that：First cooling device is to be arranged on
Cooling nozzles in cooling stack, for cooling circulating water forward or laterally to be sprayed into flue；Second cooling device is air
Heat exchanger.
4. wet desulfurization flue gas as described in claim 1 eliminates plume system, it is characterised in that：The spray condensing tower includes
Condensing tower；Pond is condensed in condensing tower lower disposed；The cooling nozzles and demister of more than two-stage are provided on condensing tower top；
Flue gas precooling zone exhanst gas outlet is arranged in the middle part of condensing tower.
5. wet desulfurization flue gas as described in claim 1 eliminates plume system, it is characterised in that：Flue gas precooling zone smoke outlet
Flue gas distributor is set, and flue gas distributor is arranged in parallel with condensation tank water face.
6. wet desulfurization flue gas as described in claim 1 eliminates plume system, it is characterised in that：It is single the system also includes cooling
Member, cooling unit are made of the condensate pump, cooling tower and feeding spraying pump connected by pipeline；Bottom is provided with cold in cooling tower
Pond；
Wherein, the condensed water in the condensation pond for spraying tower bottom is pumped into cooling tower and condensed water cools down by condensate pump；Spray
The cooling water of water cooling pond is pumped into the cooling nozzles in condensing tower and/or cooling stack by water pump.
7. wet desulfurization flue gas as described in claim 1 eliminates plume system, it is characterised in that：Further include temperature control unit,
Temperature control unit includes control device and the temperature sensor being arranged in condensing tower；
The control device is controlled as follows according to temperature：
When spraying condensing tower flue gas exit temperature higher than setting exhanst gas outlet design temperature T, output control signal makes shower water
Pump increases condensation spray column cooling nozzles water supply；
When spraying condensing tower flue gas exit temperature less than setting exhanst gas outlet design temperature T, output control signal makes shower water
Pump reduces condensation spray column cooling nozzles water supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721409561.2U CN207413082U (en) | 2017-10-27 | 2017-10-27 | Wet desulfurization flue gas eliminates plume system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721409561.2U CN207413082U (en) | 2017-10-27 | 2017-10-27 | Wet desulfurization flue gas eliminates plume system |
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| CN207413082U true CN207413082U (en) | 2018-05-29 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107648978A (en) * | 2017-10-27 | 2018-02-02 | 中冶华天工程技术有限公司 | Wet desulfurization flue gas eliminates plume system and method |
| CN108671729A (en) * | 2018-07-06 | 2018-10-19 | 亚太环保股份有限公司 | A kind of device and method for administering wet desulfurization flue gas white plume |
| CN109173563A (en) * | 2018-11-19 | 2019-01-11 | 福建南方路面机械有限公司 | A kind of exhaust treatment system of bituminous mixing plant |
| CN109189130A (en) * | 2018-10-18 | 2019-01-11 | 南京工业大学 | A method of wet-method desulfurized fume white plume being adjusted using control line |
| CN115677374A (en) * | 2022-11-15 | 2023-02-03 | 北京科技大学 | Method for condensing wet flue gas at condensation section of ceramsite roasting kiln |
-
2017
- 2017-10-27 CN CN201721409561.2U patent/CN207413082U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107648978A (en) * | 2017-10-27 | 2018-02-02 | 中冶华天工程技术有限公司 | Wet desulfurization flue gas eliminates plume system and method |
| CN107648978B (en) * | 2017-10-27 | 2024-03-22 | 中冶华天工程技术有限公司 | Wet desulfurization flue gas smoke plume eliminating system and method |
| CN108671729A (en) * | 2018-07-06 | 2018-10-19 | 亚太环保股份有限公司 | A kind of device and method for administering wet desulfurization flue gas white plume |
| CN109189130A (en) * | 2018-10-18 | 2019-01-11 | 南京工业大学 | A method of wet-method desulfurized fume white plume being adjusted using control line |
| CN109173563A (en) * | 2018-11-19 | 2019-01-11 | 福建南方路面机械有限公司 | A kind of exhaust treatment system of bituminous mixing plant |
| CN109173563B (en) * | 2018-11-19 | 2024-03-19 | 福建南方路面机械股份有限公司 | Tail gas treatment system of asphalt mixing plant |
| CN115677374A (en) * | 2022-11-15 | 2023-02-03 | 北京科技大学 | Method for condensing wet flue gas at condensation section of ceramsite roasting kiln |
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Effective date of registration: 20220602 Address after: 243000 Fu Chang Industrial Park, 259 HSI Nan Road, Ma'anshan economic and Technological Development Zone, Anhui Patentee after: HUATIAN ENGINEERING & TECHNOLOGY CORPORATION, MCC Patentee after: HUATIAN NANJING ENGINEERING & TECHNOLOGY CORPORATION, MCC Address before: 243000 Fu Chang Industrial Park, 259 HSI Nan Road, Ma'anshan economic and Technological Development Zone, Anhui Patentee before: HUATIAN ENGINEERING & TECHNOLOGY CORPORATION, MCC Patentee before: HUATIAN NANJING ENGINEERING & TECHNOLOGY CORPORATION, MCC Patentee before: MCC HUATIAN (ANHUI) ENERGY SAVING ENVIRONMENTAL PROTECTION RESEARCH INSTITUTE Co.,Ltd. |