CN213132567U - Flue anti-blocking device of absorption tower - Google Patents
Flue anti-blocking device of absorption tower Download PDFInfo
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- CN213132567U CN213132567U CN202020786683.9U CN202020786683U CN213132567U CN 213132567 U CN213132567 U CN 213132567U CN 202020786683 U CN202020786683 U CN 202020786683U CN 213132567 U CN213132567 U CN 213132567U
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- flue
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Abstract
The utility model relates to a flue of absorption tower prevents stifled device, including flue pipeline and guiding device: the flue pipeline comprises an air inlet flue, a pressurization dust removal bin flue, a steering flue, a diffusion dust prevention bin flue and an inlet pipeline which are connected in sequence; the flow guide device comprises a pressurization dust removal bin, a wedge obstacle and a diffusion dust resistance bin, wherein the pressurization dust removal bin is arranged in a flue of the pressurization dust removal bin, and the diffusion dust resistance bin is arranged in a flue of the diffusion dust resistance bin; the pressurized dedusting bin comprises a bin body of the pressurized dedusting bin, the bin body of the pressurized dedusting bin is divided into an upper part and a lower part, the upper half part of the bin body is a cylindrical bin, the lower half part of the bin body is an inverted conical frustum-shaped ash storage area, and the lowermost end of the pressurized dedusting bin is provided with an ash discharge port; the horizontal included angle of the inlet pipeline is 5-45 degrees; and a dust blocking plate is arranged in a flue of the diffusion dust blocking bin, and the horizontal included angle of the dust blocking plate is larger than that of the inlet pipeline.
Description
Technical Field
The utility model relates to a flue gas desulfurization technical field, in particular to flue of absorption tower prevents stifled device.
Background
The wet flue gas desulfurization environmental protection technology (FGD) is a leading technology for flue gas desulfurization of thermal power plants at home and abroad due to the characteristics of high desulfurization rate, wide coal quality application range, mature process technology, long stable operation period, small load change influence, large flue gas treatment capacity and the like. The chemical reaction of the sulfur dioxide is extremely fast, the absorption tower has simple structure and mature and reliable process, and the extremely fast reaction which can meet the requirement of sulfur dioxide absorption with continuous phase of gas phase, high turbulence degree and large phase interface is widely applied to various large and medium thermal power plants and medium and small low-sulfur flue gas treatment.
However, in the operation process of the wet desulphurization system, scaling is a common problem, including scaling of the absorption tower, the oxidation tank, the pipeline, the nozzle and the demister, and once the scaling phenomenon occurs, serious consequences may occur, and the whole system may cause increased pressure loss, equipment blockage and even shutdown due to scaling.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a flue of absorption tower prevents stifled device, including flue pipeline and guiding device:
a flue anti-blocking device of an absorption tower comprises a flue pipeline and a flow guide device, wherein the flue pipeline comprises an air inlet flue, a pressurization dust removal bin flue, a steering flue, a diffusion dust prevention bin flue and an inlet pipeline which are sequentially connected;
the flow guide device comprises a pressurization dust removal bin, a wedge obstacle and a diffusion dust resistance bin, wherein the pressurization dust removal bin is arranged in a flue of the pressurization dust removal bin, and the diffusion dust resistance bin is arranged in a flue of the diffusion dust resistance bin;
the pressurized dedusting bin comprises a bin body of the pressurized dedusting bin, the bin body of the pressurized dedusting bin is divided into an upper part and a lower part, the upper half part of the bin body is a cylindrical bin, the lower half part of the bin body is an inverted conical frustum-shaped ash storage area, and the lowermost end of the pressurized dedusting bin is provided with an ash discharge port;
the horizontal included angle of the inlet pipeline is 5-45 degrees;
a dust blocking plate is arranged in a flue of the diffusion dust blocking bin, and the horizontal included angle of the dust blocking plate is larger than that of the inlet pipeline;
a plurality of guide plates which are axially arranged are arranged in the steering flue;
the wedge-shaped barrier is positioned at the joint of the flue of the pressurized dust removal bin and the air inlet flue;
the horizontal included angle of the inlet pipeline is 11-17 degrees;
the lower part of the diffusion dust-resistant bin flue is provided with a dust collecting basin which is used for collecting dust on the dust-resistant plate and discharging the dust through a bottom dust outlet;
the absorption tower adopts a limestone-gypsum method desulfurization process;
the gas outlet end of the inlet pipeline is positioned above the liquid level of the slurry pool of the desulfurization tower;
the mass concentration of the smoke dust in the inlet pipeline is less than 30 mg/cubic meter.
The beneficial effects of the utility model reside in that:
the utility model discloses a 90 return bend structures of flue gas turn to and by guide plate evenly distributed, further hinder the dirt storehouse flue and hinder the dirt board effect at the diffusion and reduce outside flue gas velocity of flow down, carry out numerical simulation analysis through adopting the flow field of Fluent software in to desulfurizing tower entry flue, adjust the horizontal angle scope of inlet pipeline, improve the homogeneity in absorption tower flue gas entry flue flow field, avoided the common entrainment of flue gas entry flue department and backflow phenomenon, can show the appearance that reduces flue gas entrance scale deposit phenomenon.
Meanwhile, in order to avoid the blocking phenomenon caused by particle sedimentation due to overhigh dust content in the flue gas, flue structures such as a wedge obstacle, a pressurization dust removal bin, a diffusion dust blocking bin and the like in the flue are additionally arranged in the inlet flue, and under the combined action of all parts, the dust removal efficiency of the flue gas is improved by 50-70%, so that the problems in the existing wet desulphurization technology are solved, such as scaling and blocking of a demister and a GGH due to direct use of a desulphurization tower for dust removal, complex requirements on design type selection, pole matching form, coal type selection and smoke physicochemical characteristics in an electric precipitator, large energy loss of a bag type precipitator, high cost of an electric-bag composite precipitator and the like. Use the utility model discloses a spray the quinoline tower and not only can show the dust content that reduces the flue gas, reduce the equipment trouble of spray column, improve desulfurization efficiency, also need not to destroy spray column's structure on the architectural design, do not influence spray column's structural strength and stability, and low cost, installation are convenient, the attrition rate is low.
The flow field speed and the pressure distribution of the flue gas jet flow are changed by using a wedge obstacle in the pressurized dust removal bin, the radial, tangential and axial flow rates of the flue gas in the pressurized dust removal bin are increased, especially the inertial centrifugal force of large-particle-size particles and fibrous dust in the pressurized dust removal bin is increased due to the increase of the tangential speed, the particles are easy to form a cluster, the particles are easy to enter the external circulation, and a good dust removal effect is obtained; the residual dust is settled by combining the diffusion effect and the selection of the position direction of the dust blocking plate in the diffusion dust blocking bin, so that the dust removal efficiency is further improved, and the scaling and blocking conditions of the absorption layer are obviously reduced.
Drawings
FIG. 1 is a schematic view of a flue anti-blocking device of an absorption tower in an embodiment of the present invention;
illustration of the drawings: 1-an air inlet flue; 2-pressurizing a flue of the dust removal bin; 21-a pressurized dust removal bin; 22-wedge obstacles; 23-ash storage area; 24-ash discharge port; 3-turning a flue; 31-a baffle; 4-diffusion dust-proof bin flue; 41-diffusion dust-blocking bin; 42-dust blocking plate; 43-connecting an ash pan; 44-ash outlet; 5-an inlet duct; 51-outlet end of inlet pipe.
Detailed Description
Example (b):
fig. 1 is a schematic view of a flue blockage prevention device in the utility model, which comprises an air inlet flue 1, a pressurization dust removal bin flue 2, a turning flue 3, a diffusion dust prevention bin flue 4 and an inlet pipeline 5 which are connected in sequence; the device comprises a pressurizing dust removal bin 21, a wedge obstacle 22 and a diffusion dust blocking bin 41, wherein the pressurizing dust removal bin 21 is arranged in a pressurizing dust removal bin flue 2, and the diffusion dust blocking bin 41 is arranged in a diffusion dust blocking bin flue 4;
the pressurized dust removal bin 21 comprises a bin body of the pressurized dust removal bin 21, the bin body of the pressurized dust removal bin 21 is divided into an upper part and a lower part, the upper half part is a cylindrical bin, the lower half part is an inverted conical frustum-shaped dust storage area 23, and the lowermost end of the pressurized dust removal bin is provided with a dust discharge port 24;
the wedge-shaped barrier 22 is positioned at the joint of the pressurizing dust removal bin flue 2 and the air inlet flue 1;
a plurality of guide plates 31 which are axially arranged are arranged in the diversion flue 3;
the horizontal included angle of the inlet pipeline 5 is 11 degrees; the outlet end 51 of the inlet pipeline is above the liquid level of the slurry pool of the desulfurization tower;
a dust-resistant plate 42 is arranged in the diffusion dust-resistant bin flue 4, and the horizontal included angle of the dust-resistant plate 42 is 25 degrees; the lower part of the diffusion dust-resistant bin flue 4 is provided with a dust collecting basin 43 which is used for collecting dust on the dust-resistant plate 42 and discharging the dust through a bottom dust outlet 44;
the absorption tower adopts a limestone-gypsum method desulfurization process, and the mass concentration of the smoke dust in the inlet pipeline is 12.7 mg/cubic meter.
Claims (8)
1. The utility model provides a flue anti-blocking device of absorption tower, includes flue pipeline and guiding device, its characterized in that:
the flue pipeline comprises an air inlet flue, a pressurization dust removal bin flue, a steering flue, a diffusion dust prevention bin flue and an inlet pipeline which are connected in sequence;
the flow guide device comprises a pressurization dust removal bin, a wedge obstacle and a diffusion dust resistance bin, wherein the pressurization dust removal bin is arranged in a flue of the pressurization dust removal bin, and the diffusion dust resistance bin is arranged in a flue of the diffusion dust resistance bin;
the pressurized dedusting bin comprises a bin body of the pressurized dedusting bin, the bin body of the pressurized dedusting bin is divided into an upper part and a lower part, the upper half part of the bin body is a cylindrical bin, the lower half part of the bin body is an inverted conical frustum-shaped ash storage area, and the lowermost end of the pressurized dedusting bin is provided with an ash discharge port;
the horizontal included angle of the inlet pipeline is 5-45 degrees;
and a dust blocking plate is arranged in a flue of the diffusion dust blocking bin, and the horizontal included angle of the dust blocking plate is larger than that of the inlet pipeline.
2. The apparatus of claim 1, wherein a plurality of baffles are axially disposed in the turn flue.
3. The flue blockage preventing device for the absorption tower as recited in claim 1, wherein the wedge-shaped barrier is positioned at the joint of the flue of the pressurized dust removal bin and the air inlet flue.
4. The flue blockage preventing device for the absorption tower as recited in any one of claims 1 to 3, wherein the horizontal included angle of the inlet pipeline is 11 degrees to 17 degrees.
5. The flue blockage preventing device for the absorption tower as recited in claim 4, wherein an ash receiving basin is disposed at the lower part of the flue of the diffusion dust-blocking bin, and is used for collecting dust on the dust-blocking plate and discharging the dust through a bottom dust outlet.
6. The flue blockage preventing device of the absorption tower as recited in claim 5, wherein: the absorption tower adopts a limestone-gypsum method desulfurization process.
7. The flue blockage preventing device of the absorption tower as recited in claim 6, wherein: and the gas outlet end of the inlet pipeline is positioned above the liquid level of the slurry pool of the desulfurization tower.
8. The flue blockage preventing device of the absorption tower as recited in claim 1, wherein: the mass concentration of the smoke dust in the inlet pipeline is less than 30 mg/cubic meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020786683.9U CN213132567U (en) | 2020-05-13 | 2020-05-13 | Flue anti-blocking device of absorption tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020786683.9U CN213132567U (en) | 2020-05-13 | 2020-05-13 | Flue anti-blocking device of absorption tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213132567U true CN213132567U (en) | 2021-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020786683.9U Expired - Fee Related CN213132567U (en) | 2020-05-13 | 2020-05-13 | Flue anti-blocking device of absorption tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213132567U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115408887A (en) * | 2022-10-31 | 2022-11-29 | 交通运输部天津水运工程科学研究所 | Numerical simulation and evaluation method for water intake entrainment mechanism of offshore power plant |
-
2020
- 2020-05-13 CN CN202020786683.9U patent/CN213132567U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115408887A (en) * | 2022-10-31 | 2022-11-29 | 交通运输部天津水运工程科学研究所 | Numerical simulation and evaluation method for water intake entrainment mechanism of offshore power plant |
| CN115408887B (en) * | 2022-10-31 | 2023-01-10 | 交通运输部天津水运工程科学研究所 | Numerical simulation and evaluation method for water intake entrainment mechanism of offshore power plant |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210507 |