CN208320456U - The droplet collection device and drop collection system of drop are eliminated after wet desulphurization - Google Patents
The droplet collection device and drop collection system of drop are eliminated after wet desulphurization Download PDFInfo
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- CN208320456U CN208320456U CN201820442422.8U CN201820442422U CN208320456U CN 208320456 U CN208320456 U CN 208320456U CN 201820442422 U CN201820442422 U CN 201820442422U CN 208320456 U CN208320456 U CN 208320456U
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Abstract
The utility model is the droplet collection device and drop collection system of elimination drop after wet desulphurization, it is arranged in chimney internal cylinder or desulfurization rear pass, one-way or bi-directional annular gear liquid portion is set in barrel or walling of flue inner ring, one-way or bi-directional guide channel is formed between annular gear liquid portion and inner wall, barrel or walling of flue interval within the scope of guide channel axis projection wear liquid-passing hole, ring at liquid-passing hole is corresponded to outside barrel or walling of flue sets collecting tank, collecting tank sets drain pipe, drop collection system includes multistage droplet collection device and drop recyclable device, multistage droplet collection device includes above-mentioned unidirectional and two-way droplet collection device, drain pipe collection liquids at different levels drop to drop recyclable device, back-purge system is set in collecting tank and drain pipe, by the way that multistage droplet collection device is rationally arranged, drop recyclable device and back-purge system, effectively collect With the drop in discharge flue and chimney, " gypsum rain " phenomenon is solved or alleviated, while realizing and the liquid of collection is recycled.
Description
Technical field
The utility model belongs to energy-saving and emission-reduction field, the coal-fired station's fume treatment being related in power industry, tool
It is the device that drop is eliminated after a kind of wet desulphurization that body, which refers to,.
Background technique
China's coal fired power plant mostly uses greatly Limestone-gypsum Wet Flue Gas Desulfurization Process technique at present, and the flue gas after desulfurization would generally reach
To saturation state, temperature is reduced to 45 DEG C~55 DEG C, and saturation wet flue gas is discharged from the chimney of inside lining anti-corrosive material, forms " wet cigarette
Chimney " emission scenary.If wet flue gas can form condensate liquid in discharge process, generate along with wet desulphurization without heating
The gypsum drop at large caught, when flue gas flow rate is larger, especially local temperature, air pressure it is lower or thick weather when
Between section, chimney breast flue gas will entrained drip exclude chimney, fall to the ground to form " gypsum rain ", power plant and surrounding enviroment produced
Raw pollution, or even corrosion equipment.
The source of " gypsum rain " mainly include from mist separator of desulfurization escape and undeposited gypsum drop, saturation wet flue gas it is exhausted
The drop of condensate liquid, smoke secondary entrainment generation that thermal expansion and contact flue and inner wall of stack are formed.Its severity is main
Whether it is heated by desulphurization system operation with the deviation of design, the performance of demister, flue gas, flue gas flow rate and inner wall of stack liquid
Whether drop the influence of factors such as can be discharged in time.
Inner wall of the main region of the Drop Condensation in flue and chimney, convergence after desulfurization in flue and chimney, cigarette
Drop in road condenses in flue inner wall and constantly increases, and under the rolling action of flue gas, flows along flue inner wall；And chimney
Interior drop flows first under the rolling action of flue gas along chimney wall uplink, after drop increases to a certain degree, along chimney
Barrel flows down, and drop further converges increase in downflow processes.If flue gas flow rate is excessively high in chimney, in flue and chimney
Drop will be carried secretly by flue gas stream again.When flue gas flow rate is lower than drop reentrainment critical flow velocity, drop reentrainment is existing
As obviously weakening.Therefore, there is dynamic upper lower flow phenomenon in the drop in chimney.
Utility model content
The technical issues of the utility model is solved is to provide that a kind of structure is simple, effectively can collect and be discharged drop
The device and combined application device system.
Technological means used by the utility model is as follows.
The utility model protects the droplet collection device that drop is eliminated after a kind of wet desulphurization, setting in chimney internal cylinder or
Desulfurization rear pass；In barrel or walling of flue inner ring sets one-way or bi-directional annular gear liquid portion, which keeps off between liquid portion and inner wall
Cyclic annular one-way or bi-directional guide channel is formed, it is logical that the barrel or walling of flue interval within the scope of the axis projection of guide channel wear plural number
Fluid apertures；Ring at liquid-passing hole is corresponded to outside barrel or outside walling of flue and sets collecting tank, and the minimum point of the collecting tank is equipped with drain pipe.
Annular gear liquid portion is 1 cyclic annular gear liquid angle steel, is bent forwards；Or annular gear liquid portion is 1
Annular liquid barrier, tilts forwards.
Annular gear liquid portion is 2 annular gear liquid angle steel that respectively forwardly side, rear are bent, the guiding channel opening of formation
It is contrary；Or annular gear liquid portion is 2 respectively forwardly square, back sweep annular liquid barriers, this 2 annular liquid barriers
Respectively along, tilt against flow of flue gas direction, the guide channel opening direction of formation is opposite.
The annular liquid barrier and flue or chimney axis direction are in angle β, and 30 °≤β≤75 °.
The liquid collecting groove bottom is cricoid tapered plane, and the radial direction of the liquid collecting groove bottom and chimney internal cylinder makes an angle alpha,
And 0 °≤α≤45 °.
Back-purge system is equipped in the bottom surface of the collecting tank and drain pipe.
The utility model also protects the drop collection system that drop is eliminated after a kind of wet desulphurization, and it includes be arranged in chimney
Multistage droplet collection device on inner cylinder and/or desulfurization rear pass, the multistage droplet collection device include to be arranged in chimney top
Unidirectional droplet collection device as described above, at least one the two-way liquid as described above of chimney top following region is set
The two-way droplet collection device as described above on desulfurization rear pass is arranged in drop collection device, at least one, and multistage drop is collected
Device drain pipe connects drop recyclable device.
The collection of the drain pipe connection previous stage droplet collection device of rear stage droplet collection device on the chimney internal cylinder
The droplet collection device of liquid bath, chimney internal cylinder lowest part is connect with drop recyclable device.
The multistage droplet collection device includes the first order droplet collection device being arranged on desulfurization rear pass, in chimney
The final stage droplet collection device being arranged at the top of the second level droplet collection device and chimney internal cylinder of the following region setting of cylinder top；The
First drain pipe of level-one droplet collection device bottom, the second drain pipe connection drop of second level droplet collection device bottom return
Total drain pipe on receiving apparatus, the liquid collecting of the third drain pipe and second level droplet collection device of the final stage droplet collection device
Slot connection.
The distance between adjacent level droplet collection device on the chimney internal cylinder is no more than 100m.
Caused by the utility model the utility model has the advantages that by the way that multistage droplet collection device, drop recyclable device is rationally arranged
And back-purge system, upper dirty drop in flue and chimney effectively can be collected and be discharged, solves or alleviates " gypsum rain "
Phenomenon, while realizing and the liquid of collection is recycled.
Detailed description of the invention
Fig. 1 is the chimney structure schematic diagram of the drop collection system comprising the utility model.
Fig. 2A is the structural schematic diagram that the utility model unidirectional loop keeps off liquid angle steel.
Fig. 2 B is the structural schematic diagram of the utility model unidirectional loop liquid barrier.
Fig. 3 A is the structural schematic diagram of the two-way annular gear liquid angle steel of the utility model.
Fig. 3 B is the structural schematic diagram of the two-way annular gear liquid gusset of the utility model.
Fig. 4 A is another example structure schematic diagram of the two-way annular gear liquid angle steel of the utility model.
Fig. 4 B is another example structure schematic diagram of the two-way annular gear liquid gusset of the utility model.
Fig. 5 is the sectional view of Section A-A in Fig. 1.
Specific embodiment
The utility model emphasis first is that eliminate the droplet collection device of drop after wet desulphurization, it is for ease of description, fixed
Adopted flow of flue gas direction is rear, and flue gas source direction is front.
In barrel or walling of flue inner ring sets one-way or bi-directional annular gear liquid portion 5, is formed between annular gear liquid portion 5 and inner wall
One-way or bi-directional cyclic annular guide channel 51, barrel or walling of flue interval in the axis projection range h2 of guide channel 51 wear plural number
Liquid-passing hole 41, as shown in the sectional view of Fig. 5.
Ring sets collecting tank 6 at liquid-passing hole outside barrel or outside walling of flue, the minimum point connected drainage pipe 7 of the collecting tank 6.
In the ring seal space for using liquid-passing hole as entrance, drain pipe being outlet in the collecting tank.
Annular gear liquid angle steel can be selected in above-mentioned annular gear liquid portion 5.Embodiment as shown in Figure 2 A, 1 annular keep off liquid angle steel
It bends forwards.Such as Fig. 3 A and Fig. 4 A illustrated embodiment, 2 annular gear liquid angle steel respectively forwardly, rear bending, formed forward,
2 guide channels and opening direction at rear are on the contrary, 2 annulars keep off what 1 layer of ring of each correspondence in liquid angle steel axis projection range h2 was set
Plural liquid-passing hole.
Liquid barrier also can be selected in above-mentioned annular gear liquid portion 5.Embodiment as shown in Figure 2 B, 1 annular liquid barrier incline forwards
Tiltedly.Such as Fig. 3 A and Fig. 4 A illustrated embodiment, 2 annular liquid barriers respectively forwardly, back sweep, formed forward, 2 of rear lead
Approaching channel and opening direction are on the contrary, the plural liquid-passing hole that 1 layer of ring of each correspondence is set in the axis projection range h2 of 2 annular liquid barriers.
In order to effectively stop drop, annular liquid barrier and flue or chimney axis direction at 30 °≤β≤75 ° angle.
It is equipped with collecting tank 6,6 minimum point connected drainage pipe 7 of collecting tank in drum outer wall, 7 other end of drain pipe connects drop
The collecting tank of recyclable device 10 or previous stage droplet collection device.The liquid collecting groove bottom as shown in Fig. 2A, 2B, Fig. 3 A, 3B can be
Cricoid tapered plane smoothly flow to minimum point convenient for drop and enters drain pipe 7.Width b >=100mm of collecting tank 6, collecting tank
Bottom surface and chimney internal cylinder radial direction are at 0 °≤α≤45 ° angle.
As shown in Fig. 4 A, 4B, when flue is level or only has small angle inclination with horizontal line, the bottom surface of collecting tank at this time
It is directly connected to drain pipe.
To prevent collecting tank 6 and drain pipe 7 from blocking, recoil is set in the bottom surface of collecting tank 6 and the different location of drain pipe 7
System is washed, periodically annular collecting tank 6 and drain pipe 7 are rinsed.
Another emphasis of the utility model is the drop collection system of elimination drop after wet desulphurization, and it includes be arranged in chimney
Multistage droplet collection device on inner cylinder 1 and/or desulfurization rear pass 2, the multistage droplet collection device include to be arranged in chimney top
Two-way droplet collection device and the setting of chimney top following region is arranged in the unidirectional droplet collection device in portion, at least one
In the two-way droplet collection device on desulfurization rear pass 2, multistage droplet collection device drain pipe connects drop recyclable device 10.For
Clear explanation, the sequence of forward and backward grade is identical as flue gas flow direction sequence, and definition flow of flue gas direction is rear stage, and flue gas comes
Source direction is previous stage.
The series of droplet collection device determines by the height of chimney internal cylinder 1, the distance between adjacent level droplet collection device
No more than 100m.The liquid-passing hole quantity n and aperture size φ of each droplet collection device depend on chimney internal cylinder height, diameter and
Droplet collection device series.
The drain pipe of rear stage droplet collection device on chimney internal cylinder 1 can first lead to the collection of previous stage droplet collection device
In liquid bath, until guiding to the most prime droplet collection device of 1 bottommost of chimney internal cylinder, then by the most prime droplet collection device
Drain pipe is connect with drop recyclable device.
It is illustrated with embodiment shown in FIG. 1, multistage droplet collection device includes the cigarette after the desulfurization of chimney entrance
Second level droplet collection device 102, the chimney of first order droplet collection device 110, the setting of 1 lower part of chimney internal cylinder that road 2 is arranged
The final stage droplet collection device 110 of the top setting of inner cylinder 1.
In addition to final stage droplet collection device 110 is provided only with unidirectional gear liquid angle steel or liquid barrier, remaining grade of drop collects dress
Two-way gear liquid angle steel or liquid barrier are installed, to stop and collect the drop of uplink and downlink respectively.Annular gear liquid at different levels
The radially projecting height h1≤200mm in portion, every layer of liquid-passing hole quantity n and liquid-passing hole diameter meet: 4≤n≤60,50mm≤φ≤
150mm。
Specifically in conjunction with Fig. 1, Fig. 2A and Fig. 2 B, because final stage droplet collection device 110 is set at the top of chimney internal cylinder, i.e.,
Annular gear liquid portion 5 and collecting tank 6 are connected to the top of inner cylinder 1, can be neat with inner cylinder top at the top of annular gear liquid portion 5 and collecting tank 6
It is flat.The bottom surface of collecting tank 6 is cricoid tapered plane, and third drain pipe 73 is arranged in bottom surface nadir.
Second level droplet collection device 102 may be disposed at 1 lower part of chimney internal cylinder, can be as shown in Figure 1, and then in chimney
Cylinder 1 is arranged with above 2 junction of desulfurization rear pass, and can increase according to actual stack height in inner cylinder medium position.Because existing suitable
The drop that air-flow is carried secretly upwards also has the drop left along inner wall, upper and lower 2 annulars gear liquid angle steel as shown in Fig. 3 A, Fig. 3 B
Or opening upwards, the downward guide channel that annular liquid barrier is formed can two-way collection drops.Likewise, 6 bottom surface of collecting tank is ring
The second drain pipe 72 is arranged in the minimum point of the tapered plane, in addition to this, in the corresponding top surface of bottom surface peak in the tapered plane of shape
Or side connects above-mentioned third drain pipe 73, the drop for collecting final stage and the same level collection device conveys downwards together.
First order droplet collection device 110 is arranged at desulfurization rear pass.The embodiment as shown in Fig. 4 A, Fig. 4 B.Because of cigarette
Road is different from the direction of inner cylinder, therefore collecting tank lowest point is different, i.e., the first drain pipe 71 is set up directly on liquid collecting cell wall
Bottommost.Desulfurization rear pass 2 usually has small angle inclination, therefore collects the droplet of flue gas entrainment, or along walling of flue
The big drop of reflux.
Drop recyclable device 10 may be provided in suitable other positions in the bottom setting or actual engineering design of chimney,
It is no longer specific to limit.Drop recyclable device 10 includes total drain pipe 74, the drain pipe 72 of second level droplet collection device 102 and the
The drain pipe 71 of level-one droplet collection device 101 converges drains into drop recyclable device 10 to total drain pipe 74 again.Above-mentioned third row
Liquid pipe 73 can also directly be connect with total drain pipe 74.
Liquid in drop recyclable device 10 through water pump 11 returns to desulphurization system or into desulfurization wastewater treatment system, again plus
To utilize, achieve the purpose that water-saving.
Back-purge system is arranged in different location in the bottom surface and drain pipe of collecting tanks at different levels, periodically to collecting tanks at different levels
It is rinsed with drain pipe.Backwashing medium can be selected compressed air or clear water.To prevent flue gas from escaping, in total drain pipe 74
Fluid-tight 9 is arranged in bottom end.Also settable multiple pressure transmitters on drain pipe, for monitoring annular collecting tank 6 and drain pipe 7 is
No blocking.
The material of above-mentioned chimney internal cylinder, annular gear liquid angle steel or liquid barrier and annular collecting tank uses titanium alloy sheet.Drain
Pipe and drop recyclable device inside lining anti-corrosive material select corrosion-resistant stainless steel or steel alloy.
Claims (10)
1. eliminating the droplet collection device of drop after a kind of wet desulphurization, which is characterized in that be arranged in chimney internal cylinder or desulfurization
Rear pass；
In barrel or walling of flue inner ring sets one-way or bi-directional annular gear liquid portion (5), which keeps off shape between liquid portion (5) and inner wall
Circlewise one-way or bi-directional guide channel (51), barrel or walling of flue interval in the axis projection range (h2) of guide channel are worn
Plural liquid-passing hole；
Ring at liquid-passing hole is corresponded to outside barrel or outside walling of flue and sets collecting tank (6), and the minimum point of the collecting tank (6) is equipped with drain pipe
(7).
2. eliminating the droplet collection device of drop after wet desulphurization as described in claim 1, which is characterized in that the annular gear
Liquid portion (5) is 1 cyclic annular gear liquid angle steel, is bent forwards；
Or annular gear liquid portion (5) is 1 annular liquid barrier, is tilted forwards.
3. eliminating the droplet collection device of drop after wet desulphurization as described in claim 1, which is characterized in that the annular gear
Liquid portion (5) is 2 annular gear liquid angle steel that respectively forwardly side, rear are bent, and guide channel (51) opening direction of formation is opposite；
Or annular gear liquid portion (5) is 2 respectively forwardly square, back sweep annular liquid barriers, this 2 annular liquid barriers point
Not along, tilt against flow of flue gas direction, guide channel (51) opening direction of formation is opposite.
4. eliminating the droplet collection device of drop after wet desulphurization as claimed in claim 2 or claim 3, which is characterized in that the ring
Shape liquid barrier and flue or chimney axis direction are in angle β, and 30 °≤β≤75 °.
5. eliminating the droplet collection device of drop after the wet desulphurization as described in claims 1 to 3 is any, which is characterized in that institute
Stating collecting tank (6) bottom surface is cricoid tapered plane, and collecting tank (6) bottom surface and the radial direction of chimney internal cylinder (1) make an angle alpha,
And 0 °≤α≤45 °.
6. eliminating the droplet collection device of drop after wet desulphurization as described in claim 1, which is characterized in that in collecting tank
(6) bottom surface and drain pipe (7) is interior to be equipped with back-purge system.
7. eliminating the drop collection system of drop after a kind of wet desulphurization, it includes be arranged after chimney internal cylinder (1) and/or desulfurization
Multistage droplet collection device on flue (2), the multistage droplet collection device include be arranged in chimney top such as claim 2
The drop as claimed in claim 3 that chimney top following region is arranged in the droplet collection device, at least one collects dress
It sets, the droplet collection device as claimed in claim 3 that at least one is arranged on desulfurization rear pass (2), multistage drop collects dress
Set drain pipe connection drop recyclable device (10).
8. eliminating the drop collection system of drop after wet desulphurization as claimed in claim 7, which is characterized in that on chimney internal cylinder
Rear stage droplet collection device drain pipe connection previous stage droplet collection device collecting tank, the liquid of chimney internal cylinder lowest part
Drop collection device is connect with drop recyclable device (10).
9. eliminating the drop collection system of drop after wet desulphurization as claimed in claim 7 or 8, which is characterized in that described more
Grade droplet collection device includes the first order droplet collection device (101) being arranged on desulfurization rear pass (2), chimney internal cylinder (1)
The final stage drop being arranged at the top of the second level droplet collection device (102) and chimney internal cylinder (1) of the setting of top following region is collected
Device (110)；
First drain pipe (71) of first order droplet collection device (101) bottom, second level droplet collection device (102) bottom
Second drain pipe (72) connects total drain pipe (74) on drop recyclable device (10), the final stage droplet collection device (110)
Third drain pipe (73) connect with the collecting tank of second level droplet collection device.
10. eliminating the drop collection system of drop after wet desulphurization as claimed in claim 7, which is characterized in that chimney internal cylinder
On the distance between adjacent level droplet collection device be no more than 100m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820442422.8U CN208320456U (en) | 2018-03-29 | 2018-03-29 | The droplet collection device and drop collection system of drop are eliminated after wet desulphurization |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820442422.8U CN208320456U (en) | 2018-03-29 | 2018-03-29 | The droplet collection device and drop collection system of drop are eliminated after wet desulphurization |
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| CN208320456U true CN208320456U (en) | 2019-01-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110314525A (en) * | 2018-03-29 | 2019-10-11 | 中国电力工程顾问集团华北电力设计院有限公司 | The droplet collection device and drop collection system of drop are eliminated after wet desulphurization |
| CN114206476A (en) * | 2020-03-06 | 2022-03-18 | 富士电机株式会社 | Exhaust gas treatment device and liquid discharge unit |
-
2018
- 2018-03-29 CN CN201820442422.8U patent/CN208320456U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110314525A (en) * | 2018-03-29 | 2019-10-11 | 中国电力工程顾问集团华北电力设计院有限公司 | The droplet collection device and drop collection system of drop are eliminated after wet desulphurization |
| CN114206476A (en) * | 2020-03-06 | 2022-03-18 | 富士电机株式会社 | Exhaust gas treatment device and liquid discharge unit |
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