CN210699539U - Turn-back desulfurizing tower with tray on one side - Google Patents
Turn-back desulfurizing tower with tray on one side Download PDFInfo
- Publication number
- CN210699539U CN210699539U CN201920860783.9U CN201920860783U CN210699539U CN 210699539 U CN210699539 U CN 210699539U CN 201920860783 U CN201920860783 U CN 201920860783U CN 210699539 U CN210699539 U CN 210699539U
- Authority
- CN
- China
- Prior art keywords
- desulfurization
- tower
- area
- tray
- trays
- 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.)
- Active
Links
Images
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model relates to a turn-back desulfurizing tower with a tray on one side, wherein the bottom of the desulfurizing tower is provided with an oxidation crystallization slurry pool, the upper part of the desulfurizing tower is provided with a desulfurizing area, and a turn-back section is arranged between the oxidation crystallization slurry pool and the desulfurizing area; the middle part of the desulfurization area is provided with a vertical flue gas partition plate which divides the desulfurization area into a downstream side desulfurization area and a reverse side desulfurization area which are spaced left and right; the upper part of the downstream side desulfurization area is provided with a desulfurization tower inlet, and a downstream side spray layer is vertically arranged in the downstream side desulfurization area; the upper part of the countercurrent side desulfurization zone is provided with a desulfurization tower outlet, and an countercurrent side spraying layer is vertically arranged in the countercurrent side desulfurization zone; the tray is vertically arranged below the counter-current side spraying layer, and through holes are formed in the tray. The utility model discloses a turn back two sections in the tower and spray and wash the absorption, have very high desulfurization, dust collection efficiency, simultaneously, set up the tray that has the through-hole in the side desulfurization district lower part against the current, flue gas through behind the tray has obtained fine equipartition effect, solves the uneven problem of flue gas distribution in the tower, is favorable to improving the desulfurization efficiency of absorption tower.
Description
Technical Field
The utility model relates to an environmental protection technical field is administered to the atmosphere, concretely relates to coal-fired flue gas desulfurization device.
Background
With the higher requirements of the state on the pollutant emission concentration, the emission limit value of the gas turbine, namely SO, is reached2The discharge concentration is less than 35mg/Nm3This requires that existing desulfurization units which fail to meet the new standards be upgraded. In the transformation and upgrading process, the early-built two-furnace one-tower desulfurization device is not more and more suitable for the existing emission limits and requirements of the country, the existing two-furnace one-tower desulfurization device needs to be transformed into a one-furnace one-tower desulfurization device, if the existing two-furnace one-tower desulfurization device is completely used, the smoke amount is only half of the original smoke amount, the requirements of new standards are difficult to meet, the smoke amount is completely used, the smoke amount is changed over and rebuilt, the investment is overlarge, and great waste is caused.
Therefore, it is necessary to develop a new desulfurizing tower, and when the "two furnaces and one tower" is changed into "one furnace and one tower", the existing desulfurizing tower is used for modification, so that the high desulfurizing and dedusting efficiency can be achieved, and the ultralow emission can be realized.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in providing a unilateral is equipped with the desulfurizing tower that turns back of tray to the not enough of above-mentioned prior art existence, and it can solve in the tower flue gas distribution uneven, the project place arranges a limited difficult problem such as, has the pollutant and gets rid of efficiently, and the operation economy adjusts characteristics such as convenience, is particularly useful for existing "two stoves one tower" to reform transform into the project of "a stove one tower".
The utility model discloses a solve the technical scheme that technical problem that the aforesaid provided adopted and be:
a turn-back desulfurization tower with trays on one side comprises a desulfurization tower, wherein the bottom of the desulfurization tower is an oxidation crystallization slurry pool, the upper part of the desulfurization tower is a desulfurization area, and a turn-back section is arranged between the oxidation crystallization slurry pool and the desulfurization area; the middle part of the desulfurization area is provided with a vertical flue gas partition plate which divides the desulfurization area into a downstream side desulfurization area and a reverse side desulfurization area which are spaced left and right; the upper part of the downstream side desulfurization zone is provided with a desulfurization tower inlet, at least one downstream side spraying layer is vertically arranged in the downstream side desulfurization zone, and the downstream side spraying layer is connected with the oxidation crystallization slurry tank through a circulating pump; the upper part of the countercurrent side desulfurization zone is provided with a desulfurization tower outlet, at least one countercurrent side spraying layer is vertically arranged in the countercurrent side desulfurization zone, and the countercurrent side spraying layer is connected with the oxidation crystallization slurry tank through a circulating pump; at least one layer of tray is vertically arranged below the counter-current side spraying layer, and through holes for smoke to pass through are formed in the tray.
In the scheme, the tray is semicircular, one side of the tray is connected with the partition plate, and the other side of the tray is connected with the inner wall of the desulfurizing tower.
In the above scheme, the tray is provided with through holes with different apertures and uneven density, the aperture of the through holes in the high-speed airflow area at the periphery of the tower wall and the partition plate is smaller than that of the through holes in the low-speed airflow area at the middle, and the aperture ratio of the through holes in the high-speed airflow area at the periphery of the tower wall and the partition plate is smaller than that of the through holes in the low-speed airflow area at the middle.
In the above scheme, the number of the downstream side spraying layers is the same as that of the upstream side spraying layers, the heights of the downstream side spraying layers and the upstream side spraying layers are in one-to-one correspondence, and each downstream side spraying layer and each upstream side spraying layer share one circulating pump.
In the scheme, the upper part of the countercurrent side desulfurization area is provided with the high-performance demister, and the upper part of the demisting area is provided with the outlet of the desulfurization tower.
In the above scheme, the oxidation crystallization slurry pond side is equipped with the overflow pipe, the below of overflow pipe is equipped with supplies thick liquid pipeline, the below that supplies thick liquid pipeline is equipped with the oxidation air pipe, the oxidation air pipe lets in the oxidation crystallization slurry pond.
In the above scheme, be equipped with the agitator in the oxidation crystallization thick liquid pond, the agitator set up in the below of oxidation air pipe.
In the scheme, the bottom of the oxidation crystallization slurry tank is provided with a gypsum discharge pump.
The beneficial effects of the utility model reside in that:
1. the utility model discloses a two sections spray in the tower of turning back and wash the absorption, have very high desulfurization, dust collection efficiency. Simultaneously, set up the tray that has the through-hole in the side desulfurization district lower part against the current, flue gas through behind the tray has obtained fine equipartition effect, solves the uneven problem of flue gas distribution in the tower, is favorable to improving the desulfurization efficiency of absorption tower.
2. The bottom of the downstream side desulfurization zone and the bottom of the upstream side desulfurization zone share one oxidation crystallization slurry tank, and a stirrer is arranged in the oxidation crystallization slurry tank, so that the stirring effect is good, and the problem that slurry deposition easily occurs in the semicircular oxidation crystallization slurry tank is solved.
3. The utility model discloses make full use of existing desulfurizing tower, can solve "two stove one tower" and reform transform into "a stove one tower" project in the place arrange limited, with high costs difficult problem, have desulfurization, dust collection efficiency height, the operation economy adjusts advantages such as convenience.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
FIG. 1 is a functional partition diagram of a turn-back desulfurizing tower with a tray on one side of the utility model;
FIG. 2 is a schematic structural view of a turn-back desulfurization tower with a tray on one side;
fig. 3 is a schematic structural view of the tray of the present invention;
in the figure: 1-inlet of desulfurizing tower, 2-downstream side spraying layer, 3-circulating pipeline, 4-circulating pump, 5-partition, 6-outlet of desulfurizing tower, 7-demister, 8-upstream side spraying layer, 9-tray, 10-overflow pipe, 11-slurry supply pipeline, 12-oxidizing air pipe, 13-stirrer, 14-gypsum discharge pump,
i-downstream side desulfurization zone, II-turn back section, III-oxidation crystallization slurry pool, IV-countercurrent side desulfurization zone and V-demisting section.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in figures 1-3, the utility model discloses a unilateral is equipped with the desulfurizing tower of turning back of tray, including the desulfurizing tower, the bottom of desulfurizing tower is oxidation crystal pulp pond III, and the upper portion of desulfurizing tower is the desulfurization district, for turning back section II between oxidation crystal pulp pond III and the desulfurization district. The middle part of desulfurization district is equipped with vertical flue gas baffle 5 and divides the desulfurization district into left and right spaced fair current side desulfurization district I and adverse current side desulfurization district IV. The upper portion of following current side desulfurization district I is equipped with desulfurizing tower entry 1, follows vertical setting 1 ~ 5 layers of following current side in the following current side desulfurization district I and sprays layer 2, and the following current side sprays layer 2 and oxidation crystallization slurry pond III and is connected with external circulation pipeline 3 through circulating pump 4, and the flow direction of flue gas is the same with the slurry direction that sprays in following current side desulfurization district I. The upper portion of the countercurrent side desulfurization area IV is provided with a desulfurization tower outlet 6, 1-5 layers of countercurrent side spraying layers 8 are vertically arranged in the countercurrent side desulfurization area IV, the countercurrent side spraying layers 8 are connected with the oxidation crystallization slurry pool III through a circulating pump 4 and an external circulating pipeline 3, and the flow direction of the flue gas in the countercurrent side desulfurization area IV is opposite to the direction of the spraying slurry. The below on the adverse current side sprays layer 8 is equipped with 1 ~ 2 layers of tray 9 along vertical, and tray 9 is semi-circular, and its one side is connected with baffle 5, opposite side and desulfurizing tower inner wall connection, and it has the through-hole that is used for the flue gas to pass through to open on the tray 9, can solve the uneven problem of tower intrinsic air flow distribution, improves the pollutant and gets rid of efficiency. And a high-performance demister 7 is arranged on the upper part of the countercurrent side desulfurization zone IV, and a desulfurization tower outlet 6 is arranged above the demisting zone.
Boiler afterbody flue gas gets into the desulfurizing tower through following current side desulfurizing area I upper portion desulfurizing tower entry 1, falls into the oxidation crystallization thick liquid pond III of lower part after with spray thick liquid following current contact mass transfer, and the flue gas "turns back" and upwards passes tray 9 after 5 lower extremes of vertical baffle, with spray thick liquid countercurrent contact mass transfer, discharge the desulfurizing tower after getting rid of a large amount of fogdrops through setting up demister 7 that sprays the layer top again. The utility model discloses a two sections spray in the tower of turning back and wash the absorption, have very high desulfurization, dust collection efficiency. Simultaneously, set up tray 9 that has the through-hole in the side desulfurization district IV lower part against the current, flue gas after 9 through trays has obtained fine equipartition effect, solves the uneven problem of flue gas distribution in the tower, is favorable to improving the desulfurization efficiency of absorption tower.
Further optimization, because the interior of the tower body is divided into a high-speed airflow area at the periphery of the tower wall and a low-speed airflow area in the middle of the tower, the deviation of the flue gas speed is not more than 15%, through holes with different apertures and uneven density are formed in the tray 9 in order to be matched with the flue gas distribution, the aperture of the through holes in the high-speed airflow area at the periphery of the tower wall and the partition plate is smaller than that of the through holes in the low-speed airflow area in the middle, and the aperture ratio of the through holes in the high-speed airflow area at the periphery of the tower wall. The flue gas is under the effect of tray, along the tray to diffusion all around, and great velocity of flow flue gas and less velocity of flow flue gas velocity of flow mix through different aperture ratio regions again on the desulfurizing tower cross-section, reach the effect of flow redistribution, make the flue gas through the tray distribute evenly on the desulfurizing tower cross-section to solve the problem that the flue gas deflected, improve desulfurization efficiency.
Further optimization, the number of the downstream side spraying layers 2 is the same as that of the upstream side spraying layers 8, the heights of the downstream side spraying layers are in one-to-one correspondence, and each downstream side spraying layer 2 and each upstream side spraying layer 8 share one circulating pump 4.
Further optimizing, the lateral surface of the oxidation crystallization slurry pool III is provided with an overflow pipe 10, so that the influence on the flow of the flue gas caused by overhigh liquid level of the slurry pool is prevented. A slurry supply pipeline 11 is arranged below the overflow pipe 10 and used for injecting absorption liquid into the slurry tank. An oxidation air pipe 12 is arranged below the slurry supply pipeline 11, and the oxidation air pipe 12 is introduced into the oxidation crystallization slurry tank III and used for injecting air into the slurry tank to oxidize calcium sulfite generated by the absorption reaction into calcium sulfate.
Further preferably, in this embodiment, an agitator 13 is disposed in the oxidation crystallization slurry tank III, and the agitator 13 is disposed below the oxidation air pipe 12 and is used for agitating the slurry to suspend the solid substance and prevent the slurry from depositing.
Further preferably, in the embodiment, the bottom of the oxidation crystallization slurry tank III is provided with a gypsum discharge pump 14 for discharging gypsum generated by crystallization to a gypsum dewatering system.
The utility model discloses a unilateral is equipped with the desulfurizing tower that turns back of tray 9 is particularly useful for existing "two stoves one tower" and reforms transform the project into "one stove one tower". The smoke gas volume of a single unit is 1200000m3H (standard, dry basis, 6% O)2) For example, the diameter of the desulfurizing tower is 17.2m, the desulfurizing tower runs in two furnaces and one tower before being modified, and the desulfurizing tower runs in one furnace and one tower after being modified. In order to save investment and completely reserve the original desulfurizing tower, the partition plate 5 is arranged in the desulfurizing tower to divide the desulfurizing tower into two parts, namely a downstream side desulfurizing area I and a reverse side desulfurizing area IV. A layer of tray 9 is arranged below the countercurrent side desulfurization area IV, so that the problem of uneven distribution of flue gas in the semicircular desulfurization area is solved, and the desulfurization and dust removal efficiency is greatly improved; a shared oxidized crystallization slurry pool III is arranged below the tray 9, and the slurry pool is completely reserved during reconstruction. The inlet 1 of the turn-back desulfurization tower is arranged above the downstream side desulfurization area I, and the outlet is arranged above the upstream side desulfurization area IV. Original layer that sprays need be demolishd, sets up 3 layers at following current side desulfurization district I again and sprays the layer, and the side desulfurization district IV that flows against the current sets up 3 layers and sprays the layer, and every layer is followed the current side and is sprayed layer 2 and the side against the current and spray 1 circulating pump 4 that layer 8 shares, sets up 3 circulating pumps 4 altogether, and 4 flows of every circulating pump are 10000m3H is used as the reference value. The original demister 7 is dismantled, and the efficient demister 7 is arranged above the countercurrent side spraying layer 8.
The sulfur content of the fuel coal is 1.8% after the implementation project is modified, and SO at the inlet 1 of the reentry desulfurization tower2The concentration is 4000mg/Nm3(Standard, dry basis, 6% O2) Outlet SO2The concentration is 35mg/Nm3(Standard, 6% O)2) And desulfurization efficiency under BMCR working condition: not less than 99.12 percent. The dust concentration at the inlet 1 of the reentry desulfurization tower is 30mg/Nm3(Standard, 6% O)2) The outlet dust concentration is 5mg/Nm3(Standard, 6% O)2) And dust removal efficiency under BMCR working condition: not less than 83.3 percent. From the above data, it can be seen that the reentrant desulfurization tower has been successfully used in this project.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
While the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (8)
1. A turn-back desulfurization tower with trays on one side comprises a desulfurization tower and is characterized in that the bottom of the desulfurization tower is an oxidation crystallization slurry pool, the upper part of the desulfurization tower is a desulfurization area, and a turn-back section is arranged between the oxidation crystallization slurry pool and the desulfurization area; the middle part of the desulfurization area is provided with a vertical flue gas partition plate which divides the desulfurization area into a downstream side desulfurization area and a reverse side desulfurization area which are spaced left and right; the upper part of the downstream side desulfurization zone is provided with a desulfurization tower inlet, at least one downstream side spraying layer is vertically arranged in the downstream side desulfurization zone, and the downstream side spraying layer is connected with the oxidation crystallization slurry tank through a circulating pump; the upper part of the countercurrent side desulfurization zone is provided with a desulfurization tower outlet, at least one countercurrent side spraying layer is vertically arranged in the countercurrent side desulfurization zone, and the countercurrent side spraying layer is connected with the oxidation crystallization slurry tank through a circulating pump; at least one layer of tray is vertically arranged below the counter-current side spraying layer, and through holes for smoke to pass through are formed in the tray.
2. A reentrant desulfurization tower with trays on one side according to claim 1, wherein the trays are semicircular, and one side of each tray is connected with the partition plate, and the other side of each tray is connected with the inner wall of the desulfurization tower.
3. A reentrant desulfurization tower with trays on one side as set forth in claim 2, wherein the trays are provided with through holes with different diameters and different densities, the diameter of the through holes in the high velocity gas flow region around the tower wall and the partition is smaller than that of the through holes in the low velocity gas flow region in the middle, and the aperture ratio of the through holes in the high velocity gas flow region around the tower wall and the partition is smaller than that of the through holes in the low velocity gas flow region in the middle.
4. A reentrant desulfurization tower with trays on one side as claimed in claim 1, wherein the number of the downstream side spray layers is the same as that of the upstream side spray layers, the upstream side spray layers and the upstream side spray layers are arranged at a height corresponding to each other, and each of the downstream side spray layers and the upstream side spray layers share a circulation pump.
5. A reentrant desulfurization tower with trays on one side as set forth in claim 1, wherein a high-performance demister is disposed above the reverse-flow desulfurization zone, and the desulfurization tower outlet is disposed above the demisting zone.
6. A reentrant desulfurization tower with trays on one side as claimed in claim 1, characterized in that an overflow pipe is arranged on the side of the oxidation crystallization slurry pool, a slurry supply pipeline is arranged below the overflow pipe, and an oxidation air pipe is arranged below the slurry supply pipeline and is introduced into the oxidation crystallization slurry pool.
7. A reentry desulfurization tower with trays on one side according to claim 6, wherein an agitator is provided in the oxidation crystallization slurry tank, and the agitator is provided below the oxidation air pipe.
8. A reentry desulfurization tower with trays on one side according to claim 1, wherein a gypsum discharge pump is provided at the bottom of the oxidation and crystallization slurry tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920860783.9U CN210699539U (en) | 2019-06-10 | 2019-06-10 | Turn-back desulfurizing tower with tray on one side |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920860783.9U CN210699539U (en) | 2019-06-10 | 2019-06-10 | Turn-back desulfurizing tower with tray on one side |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210699539U true CN210699539U (en) | 2020-06-09 |
Family
ID=70962033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920860783.9U Active CN210699539U (en) | 2019-06-10 | 2019-06-10 | Turn-back desulfurizing tower with tray on one side |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210699539U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110180375A (en) * | 2019-06-10 | 2019-08-30 | 武汉凯迪电力环保有限公司 | A kind of unilateral desulfurizing tower of turning back for being equipped with pallet |
-
2019
- 2019-06-10 CN CN201920860783.9U patent/CN210699539U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110180375A (en) * | 2019-06-10 | 2019-08-30 | 武汉凯迪电力环保有限公司 | A kind of unilateral desulfurizing tower of turning back for being equipped with pallet |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102764580B (en) | A kind of apparatus and method of white clay/carbide slag-gypsum wet flue gas desulfurizing | |
| CN102847422B (en) | Apparatus for desulfurizing smoke through ammonia process | |
| CN102350198A (en) | Flue gas baffling double-slurry pool absorbing tower | |
| CN104258721A (en) | Low-energy-consumption and ultraclean-emission flue gas desulfurization method and device | |
| US11534717B2 (en) | Ammonia desulphurization and oxidation apparatus and method | |
| CN204973480U (en) | Desulfurization dust collector with whirl mixes | |
| CN104174284A (en) | Single-tower double-loop limestone-gypsum wet-method desulfuration device and method | |
| CN101342455B (en) | Rotational flow and spray combined desulfurizing device | |
| CN210699539U (en) | Turn-back desulfurizing tower with tray on one side | |
| CN101342454B (en) | Rotational flow and spray combined desulfurizing device | |
| CN201195099Y (en) | Flue gas desulfurization column of circulating fluidized bed | |
| CN110465176B (en) | Flue gas dust removal desulfurization tower and flue gas desulfurization and wastewater treatment method | |
| CN101284207B (en) | Circulating fluid bed flue gas desulfurization tower | |
| CN207899255U (en) | A kind of desulphurization plant | |
| CN114849459A (en) | Wet desulphurization spherical tower, application thereof and wet desulphurization process | |
| CN1221307C (en) | Integrative desulfurizing and dedusting tower of ammonia process | |
| CN110180375A (en) | A kind of unilateral desulfurizing tower of turning back for being equipped with pallet | |
| CN202962261U (en) | Y-shaped absorption plate tower | |
| CN107051175A (en) | A kind of boiler desulfurizing adsorption system of flue gas deep purifying | |
| CN202173881U (en) | Smoke baffling type absorption tower with double slurry ponds | |
| CN202173875U (en) | Ammonia flue gas desulfurization device | |
| CN100418613C (en) | Circular dense phase fluidizing desulfurization apparatus | |
| CN203155075U (en) | Built-in double-chamber double-value wet type desulfurizing tower device | |
| CN216856257U (en) | Single-tower double-zone wet desulphurization device | |
| CN110180328A (en) | A kind of industrial waste gas purifying processing unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |