CN207674477U - A kind of white absorption tower that disappears of flue gas heating - Google Patents
A kind of white absorption tower that disappears of flue gas heating Download PDFInfo
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- CN207674477U CN207674477U CN201721688489.1U CN201721688489U CN207674477U CN 207674477 U CN207674477 U CN 207674477U CN 201721688489 U CN201721688489 U CN 201721688489U CN 207674477 U CN207674477 U CN 207674477U
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- flue gas
- absorption tower
- tower
- heater
- flow channel
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Abstract
A kind of white absorption tower that disappears of flue gas heating, including tower body, smoke inlet, spray system, flue gas condenser, flue gas heater, chimney；Flue gas enters absorption tower by smoke inlet, passes sequentially through spray system, flue gas condenser, and flue gas heater is most discharged into air through chimney afterwards, and flue gas is in emission without white plume；The utility model is simple in structure, and floor space is small, and implementation cost is low.
Description
Technical field
The utility model is related to the white absorption towers that disappears that flue gas desulfurization technique field more particularly to a kind of flue gas are heated up.
Background technology
It is promulgated with national environmental protection portion《Fossil-fuel power plant atmospheric pollutant emission standard》(GB13226-2011) reality
It applies, it is desirable that coal-burning boiler dust emission standard reaches 30mg/Nm3, SO2Content distinguishes control by newly-built and existing power plant and exists
100mg/m3、200mg/m3, key area flue dust and SO from now on2Discharge capacity is controlled in 20mg/m3,50mg/m3。
Coal-burning boiler generates a large amount of dust, sulfur dioxide, sulfur trioxide and nitrogen in process of production using coal as the energy
Oxide, universal absorption tower carry out desulfurization process to flue gas.However, using the flue gas after Gypsum Wet technology desulfurization
In steam be substantially at saturated mode, water capacity is big, and in discharge process, flue gas is dropped mixing in diffusion process temperature with air
Low, the elutriation in flue gas goes out, and forms white haze on chimney periphery, is commonly called as " plume ".
For industries such as petrochemical industry, biochemistry, sulfur-bearing in tail gas or flue gas contains VOC, and generally use absorption tower is to tail gas or flue gas
Water capacity is big in processing, treated tail gas or flue gas, and white plume is also will produce in discharge process.
To eliminate white cigarette, the prior art is mainly flue gas (tail gas) temperature rise heat exchanger, by promoting flue gas (tail gas) temperature
Solve the problems, such as " plume " that condensation of moisture in flue gas generates, but effect is all not so good, is primarily due to：
(1) existing flue gas temperature rise heat exchanger is mostly fin-tube heat exchanger, and heat transfer efficiency is low, compactness is small, floor space
Greatly；
(2) contain a certain amount of particulate matter in the flue gas after desulfurization, be easy to block heat exchanger；
It is the floor space for saving equipment to partially absorb tower, chimney is directly arranged at the top of absorption tower so that cigarette after desulfurization
Gas is directly discharged from the chimney on absorption tower top, and this absorption tower effectively saves floor space, but equally exists directly
The bad problem of temperature rise heat exchanger treatment effect is set.
Utility model content
It eliminates white " plume ", core is to improve the degree of superheat of vapor in flue gas, and then eliminate white plume.
It analyzes for these reasons, the utility model is started with from following several respects：
1) flue gas condenser reduces the water capacity in flue gas；
2) it utilizes flue gas heater to promote the flue-gas temperature after desulfurization, improves the vapor degree of superheat in flue gas, realize flue gas
Discharge is without white plume；
3) the problems such as heat transfer efficiency and compactness of raising heating device, solution space and weight；
4) on the basis of solving above-mentioned 2 point, the heat exchanger plugging performance of resistance to flue gas is improved.
To sum up, the utility model has following innovative：
1) absorption tower is combined into one with chimney, reduces space and improvement cost；
2) efficient flue gas condenser is set between spray system and demister, is cooled down to flue gas, flue gas is reduced
Middle water capacity；
3) efficient flue gas heater is set between demister and chimney, flue gas is heated, is improved in flue gas
The vapor degree of superheat solves the problems, such as the white plume occurred during flue gas emission；
4) flue gas condenser uses the flue gas heater structure of straight passage structures, flue gas side runner height with flue gas heater
More than wave height, contactless flue gas straight passage structures are formed, while ensureing heat transfer temperature difference and heat transfer efficiency, solve pipe
Formula and conventional heat-exchangers of the plate type flue gas blockage problem.
The utility model is to be achieved by the following technical programs：
A kind of white absorption tower that disappears of flue gas heating, including absorption tower tower body, the chimney above the tower body of absorption tower, are set to
Tower internals in absorbing tower body, the flue gas heater being set to above tower internals, wherein
The cold side runner both ends of flue gas heater are connect with the smoke inlet of the exhanst gas outlet of absorption tower tower body and chimney respectively,
The hot side runner of flue gas heater passes through heat medium；
Flue gas enters absorption tower by the smoke inlet on absorption tower, by entering flue gas heater after tower internals, finally leads to
Cross smoke stack emission.
The flue gas heater is heat-exchangers of the plate type.
The heat transfer element of the flue gas heater is made of corrugated cardboard sheet, and the folded completion of multiple corrugated cardboard sheets is plate beam and is formed
Flue gas flow channel and heat medium runner, wherein it is high that the sum of ripple height of projection of the flue gas flow channel both sides is less than exhaust gases passes
Degree.
Flue gas condenser is equipped between the absorption tower tower body exhanst gas outlet and flue gas heater, the flue gas condenser is
The heat transfer element of heat-exchangers of the plate type, the flue gas condenser is made of corrugated cardboard sheet, and the folded completion of multiple corrugated cardboard sheets is plate beam
And form flue gas flow channel and cooling medium stream road, wherein the sum of ripple height of projection of the flue gas flow channel both sides is less than flue gas
Channel height.
Wet electrical dust precipitator is equipped between the flue gas condenser flue gas flow channel and flue gas heater flue gas flow channel.
The utility model has the beneficial effects that：
1) absorption tower is combined into one with chimney, saves space and implementation cost；
2) it is flue gas cool-down to utilize flue gas condenser, while realizing that Water vapor condensation is precipitated in flue gas, reaches the mesh of dehumidifying
's.
3) after the flue gas of absorption tower processing is heated by flue gas heater, the degree of superheat of vapor in flue gas is improved,
And then eliminate white plume problem caused by flue gas direct emission.
4) it under same operating condition, using the flue gas heater and flue gas condenser of straight passage structures, can not only obtain
Higher heat transfer efficiency, reduction heat exchanger heat transfer area, and size of heat exchanger and floor space are reduced, while solving traditional heat
The unavoidable flue gas blockage problem of exchanger.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2-Fig. 4 is the additional embodiment structural schematic diagram of the utility model.
Fig. 5 is the flue gas heater cross section of fluid channel schematic diagram of the utility model.
Fig. 6 is the flue gas condenser cross section of fluid channel schematic diagram of the utility model.
In figure：1. absorption tower tower body, 2. absorption tower absorbing liquids, 3. smoke inlets, 4. tower internals, 5. flue gas heaters,
501. flue gas heater corrugated cardboard sheets, 6. chimneys, 7. flue gas condensers, 701. flue gas condenser corrugated cardboard sheets, 8. wet type electricity remove
Dirt device.
A. former cigarette, the net cigarettes of B., C. heat mediums, D. cool down medium, H1. flue gas flow channel height, H2. flue gas flow channels side
Ripple height of projection, H3. flue gas flow channels other side ripple height of projection, h1. flue gas flow channel height, one side wave of h2. flue gas flow channels
Line height of projection, h3. flue gas flow channels other side ripple height of projection.
Specific implementation mode
In order to make those skilled in the art more fully understand the technical solution of the utility model, below in conjunction with the accompanying drawings
The utility model is described in further detail with most preferred embodiment.
As shown in Figure 1, the utility model includes absorption tower tower body 1, the chimney 6 above the tower body of absorption tower, and it is set to
Tower internals 4 in absorbing tower body is set to the flue gas heater 5 of the top of tower internals 4 wherein,
The cold side runner both ends of flue gas heater are connect with the smoke inlet of the exhanst gas outlet of absorption tower tower body and chimney respectively,
The hot side runner of flue gas heater passes through heat medium；
Flue gas enters absorption tower by the smoke inlet 3 on absorption tower, by entering flue gas heater after tower internals, finally leads to
Cross smoke stack emission.
Tower internals can be the structures such as spray tube, shower deck tray, filler, nozzle, realize absorbing liquid in absorption tower cross section
It is uniformly distributed the purpose with sprinkling, and then ensures that absorbing liquid comes into full contact with flue gas, is reacted, is taken off by absorbing liquid and former cigarette
Except the pollutant in former cigarette, flue gas becomes net cigarette after processing；
Former cigarette A enters absorption tower by smoke inlet, and absorbing liquid reacts under the distribution of tower internals with flue gas, passes through
Become net cigarette B after the processes such as desulfurization, cooling, dehumidifying, neat stress enters flue gas heater, with the heat medium in flue gas heater
C completes heat exchange, is discharged through chimney after being heated.
In practical applications, flue gas heater can be arranged between chimney and absorption tower tower body, flue gas heater
Cold side runner both ends connect respectively with the smoke inlet of the exhanst gas outlet of absorption tower tower body and chimney；In addition, flue gas heater is also
It can be arranged in desulfurizing tower tower body top or chimney lower part, as long as it can make the flue gas liter flowed into from desulfurizing tower to chimney
Temperature is realized to the heat effect of flue gas, belongs to the protection category of the utility model.
Flue gas heater uses heat-exchangers of the plate type structure, can be segmented again according to the type of attachment between plate and plate
For the dismountable board type heat exchanger, half welded type heat-exchangers of the plate type and the board-like heat exchange of full welded type of rubber seal
Device.
Flue gas flow direction：Former cigarette A outside system enters absorption tower by smoke inlet, the absorbing liquid being distributed through tower internals
After cooling, cooling, desulfurization, the heat medium into the flue gas flow channel of flue gas heater, with flue gas heater heat medium flow channel
Heated after being exchanged heat, flue gas during heating vapor the degree of superheat improve, eliminate white cigarette phenomenon when discharge.
Preferably, flue gas can be the tail gas or fire coal to be treated generated in production process, combustion gas, biomass etc.
Burn the flue gas generated, can also be the flue gas that stove generates in process of production.
Preferably, the absorbing liquid on absorption tower can be desulfurization slurry or lye or unclassified stores.
As shown in Fig. 2, in conjunction with Fig. 1, at the top of the flue gas heater and tower body between be provided with flue gas condenser 7, flue gas is cold
Condenser is passed through cooling medium D, and the flue gas B to flowing through flue gas flow channel is condensed, and flue gas cools down in condensation process, dehumidifies, and subtracts
The thermic load of flue gas heater is lacked.
Flue gas condenser uses heat-exchangers of the plate type structure, can be segmented again according to the type of attachment between plate and plate
For the dismountable board type heat exchanger, half welded type heat-exchangers of the plate type and the board-like heat exchange of full welded type of rubber seal
Device.
As shown in figure 3, in conjunction with Fig. 1, wet electrical dust precipitator 8 is provided between flue gas heater at the top of tower body, to de-
Flue gas after sulphur dehumidified, dedusting.
As shown in figure 4, in conjunction with Fig. 2, wet electrical dust precipitator is provided between flue gas condenser and flue gas heater, to warp
The flue gas for crossing flue gas condenser dehumidified, dedusting.
As shown in figure 5, flue gas heater is folded by multiple flue gas heater corrugated cardboard sheets 501 and falls and formed flue gas flow channel and add
Heat medium flow channel, the sum of ripple height of projection H2 and H3 of flue gas flow channel both sides are less than flue gas flow channel height H1, i.e. H1 ＞ H2+
H3, correspondingly, ripple can not form contact in flue gas flow channel, i.e. flue gas B flows in contactless channel, solve tubular type with
The problem of conventional plate heat exchanger field of flow stationary point, the gypsum particle in flue gas is not easy to gather, and then solves blockage problem, together
When since heat transfer element is corrugated cardboard sheet, compared with tubular type flue gas heat-exchange unit, heat transfer efficiency is high, and warm end temperature difference is small, same heat source
Under the conditions of, flue gas exit temperature higher, the white effect that disappears is notable.
As shown in fig. 6, flue gas condenser by multiple flue gas condenser corrugated cardboard sheets 701 it is folded fall and formed flue gas flow channel with it is cold
But medium runner, the sum of ripple height of projection h2 and h3 of flue gas flow channel both sides are less than flue gas flow channel height h1, i.e. h1 ＞ h2+
H3, correspondingly, ripple can not form contact in flue gas flow channel, i.e. flue gas B flows in contactless channel, solve tubular type with
The problem of conventional plate heat exchanger field of flow stationary point, the gypsum particle in flue gas is not easy to gather, and then solves blockage problem, together
When since heat transfer element is corrugated cardboard sheet, compared with tubular type flue gas heat-exchange unit, heat transfer efficiency is high, and warm end temperature difference is small, same low-temperature receiver
Under the conditions of, flue gas exit temperature is lower, and effect on moisture extraction is more preferable.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (5)
1. a kind of white absorption tower that disappears of flue gas heating, which is characterized in that including absorption tower tower body, above the tower body of absorption tower
Chimney, the tower internals being set in absorbing tower body, the flue gas heater being set to above tower internals, wherein
The cold side runner both ends of flue gas heater are connect with the smoke inlet of the exhanst gas outlet of absorption tower tower body and chimney respectively, flue gas
The hot side runner of heater passes through heat medium；
Flue gas enters absorption tower by the smoke inlet on absorption tower, by entering flue gas heater after tower internals, finally by cigarette
Chimney discharges.
2. a kind of white absorption tower that disappears of flue gas heating according to claim 1, which is characterized in that the flue gas heater is
The heat transfer element of heat-exchangers of the plate type, the flue gas heater is made of corrugated cardboard sheet, and the folded completion of multiple corrugated cardboard sheets is plate beam
And form flue gas flow channel and heat medium runner, wherein the sum of ripple height of projection of the flue gas flow channel both sides is less than flue gas
Channel height.
3. a kind of white absorption tower that disappears of flue gas heating according to claim 1 or 2, which is characterized in that the absorbing tower
Flue gas condenser is equipped between body exhanst gas outlet and flue gas heater.
4. a kind of white absorption tower that disappears of flue gas heating according to claim 3, which is characterized in that the flue gas condenser is
The heat transfer element of heat-exchangers of the plate type, the flue gas condenser is made of corrugated cardboard sheet, and the folded completion of multiple corrugated cardboard sheets is plate beam
And form flue gas flow channel and cooling medium stream road, wherein the sum of ripple height of projection of the flue gas flow channel both sides is less than flue gas
Channel height.
5. a kind of white absorption tower that disappears of flue gas heating according to claim 4, which is characterized in that the flue gas condenser cigarette
Wet electrical dust precipitator is equipped between flow channel and flue gas heater flue gas flow channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721688489.1U CN207674477U (en) | 2017-12-07 | 2017-12-07 | A kind of white absorption tower that disappears of flue gas heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721688489.1U CN207674477U (en) | 2017-12-07 | 2017-12-07 | A kind of white absorption tower that disappears of flue gas heating |
Publications (1)
| Publication Number | Publication Date |
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| CN207674477U true CN207674477U (en) | 2018-07-31 |
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ID=62967558
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721688489.1U Active CN207674477U (en) | 2017-12-07 | 2017-12-07 | A kind of white absorption tower that disappears of flue gas heating |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107975817A (en) * | 2017-12-07 | 2018-05-01 | 天津华赛尔传热设备有限公司 | A kind of white absorption tower that disappears of flue gas heating |
| CN109939556A (en) * | 2019-04-22 | 2019-06-28 | 山西华仁通电力科技有限公司 | The flue gas advanced purification system and its method that residual heat utilization-type plume is eliminated |
| CN109939557A (en) * | 2019-04-22 | 2019-06-28 | 山西华仁通电力科技有限公司 | The system and method for coloured plume are eliminated in collaboration |
-
2017
- 2017-12-07 CN CN201721688489.1U patent/CN207674477U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107975817A (en) * | 2017-12-07 | 2018-05-01 | 天津华赛尔传热设备有限公司 | A kind of white absorption tower that disappears of flue gas heating |
| CN109939556A (en) * | 2019-04-22 | 2019-06-28 | 山西华仁通电力科技有限公司 | The flue gas advanced purification system and its method that residual heat utilization-type plume is eliminated |
| CN109939557A (en) * | 2019-04-22 | 2019-06-28 | 山西华仁通电力科技有限公司 | The system and method for coloured plume are eliminated in collaboration |
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