CN206295795U - A kind of wet desulphurization device of new vertical calotte tower tray - Google Patents
A kind of wet desulphurization device of new vertical calotte tower tray Download PDFInfo
- Publication number
- CN206295795U CN206295795U CN201621360958.2U CN201621360958U CN206295795U CN 206295795 U CN206295795 U CN 206295795U CN 201621360958 U CN201621360958 U CN 201621360958U CN 206295795 U CN206295795 U CN 206295795U
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- CN
- China
- Prior art keywords
- calotte
- tower
- tower tray
- stock tank
- wet desulphurization
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a kind of wet desulphurization device of new vertical calotte tower tray, including tower body and tower tray, lower section inside the tower body is provided with above stock tank, the stock tank and is provided with tower tray, and stock tank is internally provided with oxidation furnaces, the both sides of the stock tank are provided with mixing pump, spraying layer is provided with above the tower tray, demister is provided with above the spraying layer, the beneficial effects of the utility model are, equally distributed vertical calotte unit is offered on tower tray, slurries can be carried, increases the slurries residence time, sulfur dioxide removal efficiency is high；Gap is provided with calotte, flue gas is entered by calotte gap side direction horizontal holds liquid zone, gas-liquid collision is fierce, the inertial collision kinetic energy of gas-solid contact is big, and mass transfer effect is good, and disposal ability is big, dedusting, desulfurized effect are good, PM2.5 particulate matters can be effectively removed, the flowing of gas-liquid two-phase is three-dimensional on tower tray, and space utilization obtains most abundant；Entrainment trap is provided with calotte, flue gas mist carrying amount is small.
Description
Technical field
The utility model belongs to wet desulphurization device technical field, and in particular to a kind of wet method of new vertical calotte tower tray
Desulfurizer.
Background technology
It is the important composition of China's energy resource structure that Coal Energy Source is, according to《Coal Chemical Industry in China industry development prospect and investment warfare
Slightly planning application report prediction》Report display, with domestic petroleum, the growing tension of natural gas supply, domestic chemical industry goes out
Show to the inclined trend of Coal Chemical Industry.But Coal Chemical Industry, to the seriously polluted of air, its waste gas for producing contains substantial amounts of pollution
Thing sulfur dioxide, wherein coal fired power plant are even more the rich and influential family of the pollutants such as discharge sulfur dioxide and flue dust.For the office of current rigorous
Face, country has put into effect a series for the treatment of and upgrading policy, and the end of the year 2015, national correlation department is proposed《Implement in full combustion
Coal-fired plant's minimum discharge and reducing energy consumption programme of work》, it is desirable to coal fired power plant in all parts of the country is striven for realizing ultralow in the year two thousand twenty
Discharge, so-called minimum discharge is sulfur dioxide emissioning concentration not higher than 35mg/Nm3, the concentration of emission of flue dust is not higher than 10mg/
Nm3.The new high-efficient desulfation dust-extraction device of exploitation is imperative.
But existing desulfurizer is still present some irrational factors, a coal fired power generation machine during use
Sulfur dioxide in the main removal flue gas using limestone-gypsum method wet type device of group, the device is main using spray column as wet
Method desulfuration absorbing tower.But entrainment reduction mass-transfer efficiency is susceptible to during traditional spray；Hold when gas velocity is excessive
Easily there is liquid flooding, reduce plate efficiency, or even cannot normal operation；Gas phase fluctuates and causes that normal operating is destroyed, and has a strong impact on
Device operating flexibility；Disposal ability is low, it is impossible to meet the desulfurization requirement of powerful generating set；Traditional spray column plate mass transfer
Resistance is big, and pressure drop is big, big energy-consuming, poor performance；The space that veneer mass transfer needs is big, space utilization it is insufficient；Asked due to many
The presence of topic, conventional apparatus do not reach the requirement of minimum discharge much.
Utility model content
The purpose of this utility model is to provide a kind of wet desulphurization device of new vertical calotte tower tray, above-mentioned to solve
The conventional apparatus proposed in background technology do not reach the problem of the requirement of minimum discharge much.
To achieve the above object, the utility model provides following technical scheme：A kind of wet method of new vertical calotte tower tray
Desulfurizer, including tower body, the lower section inside the tower body is provided with stock tank, and stock tank is internally provided with oxidation furnaces, institute
The both sides for stating stock tank are provided with mixing pump, and vertical calotte tower tray is provided with above the stock tank, and the top of the tower tray is set
There is spraying layer, absorption tower entrance is provided with the left of the tower body between the stock tank and spraying layer, set above the spraying layer
Demister is equipped with, absorption tower outlet is provided with above the tower body.
Preferably, equally distributed calotte unit is offered on the tower tray, and the arrangement mode of calotte unit is in three
Angular pattern arrangement.
Preferably, the entrainment trap of vertical stratification perforate is provided with the calotte unit.
Preferably, fixed with cover base between the calotte unit and tower tray and be provided with skirt section weir.
Preferably, the tower tray is provided with one layer altogether, is not less than 2m with spraying layer top spray interlamellar spacing, with underlying absorbent
Tower entrance spacing is not less than 1.5m.
Preferably, the tower tray uses the different steel of alloy structure, stainless steel material or preservative treatment.
Compared with prior art, the beneficial effects of the utility model are：In the utility model in calotte unit gas velocity mistake
Being even above several times of common sieve plate greatly will not also cause liquid flooding；Its local resistance 10 times of left sides smaller than the local resistance in the hole of flat board
The right side, can make traditional column plate anode drop reduction by 45% or so.Good stability, operating flexibility is big, and gas-liquid collision is fierce in calotte, gas-solid
The inertial collision kinetic energy of contact is big, and mass transfer effect is good, good dedusting effect, and the flowing of two-phase is three-dimensional, space utilization on sieve plate
Obtain most abundant；Therefore, sieve plate spacing is 300-550mm, has saved a large amount of manufacturing costs, and mist sorting hole uses corrosion resistant canopy
Strip typed gap, and to adaptability that dirty liquid has had；It is the device for being adapted to desulfurization and dedusting.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
The schematic layout pattern of Fig. 2 sieve plates of the present utility model；
Fig. 3 is the structural representation of calotte unit of the present utility model；
In figure：The outlet of 1- absorption towers, 2- demisters, 3- spraying layers, 4- tower trays, 5- absorption towers entrance, 6- stock tanks, 7- oxidations
Equipment, 8- mixing pumps, 9- tower bodies, 10- tower trays, 11- gaps, 12- entrainment traps, 13- covers, 14- covers base, 15- skirts
Portion weir, 16- calotte units.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of the utility model protection.
Fig. 1, Fig. 2 and Fig. 3 are referred to, the utility model provides a kind of wet desulphurization device of new vertical calotte tower tray,
Including tower body 9, the lower section inside tower body 9 is provided with stock tank 6, and stock tank 6 is internally provided with oxidation furnaces 7, the both sides of stock tank 6
Mixing pump 8 is provided with, the top of stock tank 6 is provided with vertical calotte tower tray 4, and the top of tower tray 4 is provided with spraying layer 3, the He of stock tank 6
The left side of the tower body 9 between spraying layer 3 is provided with absorption tower entrance 5, and the top of spraying layer 3 is provided with demister 2, tower body 9
Top is provided with absorption tower outlet 1.
Equally distributed calotte unit 16 is offered on tower tray 4, and the arrangement mode of calotte unit 16 is mould triangular in shape
Formula is arranged；The entrainment trap 12 of vertical stratification perforate is provided with calotte unit 16；Cover is used between calotte unit 16 and tower tray 4
Base 14 is fixed and is provided with skirt section weir 15；Tower tray 4 is provided with one layer altogether, and 2m is not less than with the top of spraying layer 3 spray interlamellar spacing,
It is not less than 1.5m with the spacing of underlying absorbent tower entrance 5；Tower tray 4 uses the difference of alloy structure, stainless steel material or preservative treatment
Steel.
As shown in Fig. 2 being the schematic layout pattern on sieve plate, wherein the center spacing of calotte unit 16 is 190mm, and calotte is straight
Footpath is 100mm, and cap height is 150mm.The a diameter of 16000mm of tower body, calotte leaves certain spacing for 160mm with tower body.
Calotte is evenly distributed on sieve plate, enough spaces is left between calotte and is flowed for liquid.Such setting can pass gas-liquid
Matter is more uniform, and reinforcing absorbs, and improves plate efficiency；As shown in figure 3, being the structural representation of calotte unit 16, calotte unit
16 are distributed on tower tray, and the gap that liquid stream passes through is left in calotte bottom, and the size in gap is 20mm, and calotte top sidewall is provided with one
The canopy stripe shape mist sorting hole of fixed number amount, constitutes entrainment trap 12, and aperture is 8mm.Gas occurs by air rising hole with liquid
First time mass transfer, the size of air rising hole is 40mm；Gas-liquid mixture gets to cover top, carries out Surface Renewal, and second mass transfer occurs；
Separated through entrainment trap 12, liquid is forced to be separated into droplet, and third time mass transfer occurs.Liquid then flows into plate supernatant, most
Skirt section weir 15 is crossed eventually, is flowed under tower.Continue to rise after three mass transfers of gas, when actually used, two pieces of calottes of sieve plate can be with
It is spatially vertically opposite, it is also possible to arbitrary arrangement, it is not necessary to consider to place the same completely, as long as increase gas-liquid can be completed connecing
Touch, reinforcing absorbs, and makes the uniform purpose of smoke distribution.The locus on two pieces of skirt sections weir 15 is into 180 °, it is ensured that liquid
Optimal mass transfer, is unlikely to short circuit.
Operation principle of the present utility model and use flow：When the present embodiment works, 90 DEG C are not less than by dedusting
Former flue gas is entered by the absorption tower entrance 5 of desulfurizer, the bottom-up motion in desulfurizer, for absorbing dioxy in flue gas
Change sulphur, the slurries of trapping flue dust by spraying layer 3, from up to down spray, contacted with former flue gas adverse current, former flue gas hangs down by new
During straight calotte tower tray, on the one hand, gas-liquid has multistage mass transfer in this device, it is ensured that mass-transfer efficiency, desulfurization effect is improve
Rate, on the other hand, the flow direction of the gas-liquid mixture sprayed from calotte is horizontally oriented and non-generic column plate or packed tower are erected
Straight or oblique direction, the vertical velocity component very little of drop, the entrainment in air-flow seldom, can be not very big in plate spacing
In the case of, operating gas velocity is very high, and gas-liquid separation in addition fully, does not have froth bed on column plate, this causes new vertical calotte tower tray
With operating flexibility higher.In addition, sieve plate can also increase the residence time of slurries not less than 3s, the slurries of sulfur dioxide absorption
PH is not more than 5.5, is conducive to improving the dissolution rate of absorbent, so as to absorb more sulfur dioxide under equal liquid-gas ratio,
Liquid-gas ratio is reduced, power consumption is reduced, gas-liquid mixture is by the droplet diameter very little after entrainment trap 12, the ratio of flue gas entrainment
Conventional apparatus mist is significantly reduced, and the flue gas after purification is continued up by after spraying layer 3, into demister 2 after go again
Except its more than 18 microns of big drop, dual demisting makes the flue gas carrying amount that desulfurizer is exported be less than 30mg/Nm3.After purification
Flue gas discharged from taper flue outlet 1, conical absorption tower outlet 1 can effectively slow down the flow field bias currents that 90 ° of elbows are produced, with
Slow down influence of the flue outlet to the flow field of demister 2, the sulfur dioxide concentration of absorption tower entrance 5 is 500~3000mg/Nm3, flue dust
Concentration is not more than 100mg/Nm3,90~120 DEG C of inlet flue gas temperature degree, and desulfurizer uses two diplopore sieve plates, four layers of spraying layer 3,
Three-level ridge type demister 2, liquid-gas ratio is not more than 17L/m3, flow velocity is not more than 10m/s in tower, and resistance is not more than 1500Pa, takes off
Sulphur device outlet sulfur dioxide concentration is not more than 35mg/Nm3, flue dust be not more than 5mg/Nm3。
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out various changes in the case where principle of the present utility model and spirit is not departed from, repaiies
Change, replace and modification, scope of the present utility model is defined by the appended claims and the equivalents thereof.
Claims (6)
1. a kind of wet desulphurization device of new vertical calotte tower tray, including tower body (9), it is characterised in that：In the tower body (9)
It is provided with stock tank (6) below portion, and stock tank (6) is internally provided with oxidation furnaces (7), the both sides of the stock tank (6) set
There is mixing pump (8), vertical calotte tower tray (4) is provided with above the stock tank (6), spray is provided with above the tower tray (4)
Drenching layer (3), absorption tower entrance (5), the spray are provided with the left of the tower body (9) between the stock tank (6) and spraying layer (3)
Demister (2) is provided with above layer (3), absorption tower outlet (1) is provided with above the tower body (9).
2. the wet desulphurization device of a kind of new vertical calotte tower tray according to claim 1, it is characterised in that：The tower
Equally distributed calotte unit (16) is offered on disk (4), and the arrangement mode of calotte unit (16) is pattern triangular in shape row
Row.
3. the wet desulphurization device of a kind of new vertical calotte tower tray according to claim 2, it is characterised in that：The cap
The entrainment trap (12) of vertical stratification perforate is provided with cover unit (16).
4. the wet desulphurization device of a kind of new vertical calotte tower tray according to claim 2, it is characterised in that：The cap
It is fixed with cover base (14) and be provided with skirt section weir (15) between cover unit (16) and tower tray (4).
5. the wet desulphurization device of a kind of new vertical calotte tower tray according to claim 1, it is characterised in that：The tower
Disk (4) is provided with one layer altogether, is not less than 2m with spraying layer (3) top spray interlamellar spacing, with underlying absorbent tower entrance (5) spacing not
Less than 1.5m.
6. the wet desulphurization device of a kind of new vertical calotte tower tray according to claim 1, it is characterised in that：The tower
Disk (4) uses the different steel of alloy structure, stainless steel material or preservative treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621360958.2U CN206295795U (en) | 2016-12-07 | 2016-12-07 | A kind of wet desulphurization device of new vertical calotte tower tray |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621360958.2U CN206295795U (en) | 2016-12-07 | 2016-12-07 | A kind of wet desulphurization device of new vertical calotte tower tray |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206295795U true CN206295795U (en) | 2017-07-04 |
Family
ID=59213578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621360958.2U Expired - Fee Related CN206295795U (en) | 2016-12-07 | 2016-12-07 | A kind of wet desulphurization device of new vertical calotte tower tray |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206295795U (en) |
-
2016
- 2016-12-07 CN CN201621360958.2U patent/CN206295795U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170704 Termination date: 20201207 |
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| CF01 | Termination of patent right due to non-payment of annual fee |