CN202740962U - Wet-method flue gas desulphurization device - Google Patents
Wet-method flue gas desulphurization device Download PDFInfo
- Publication number
- CN202740962U CN202740962U CN 201220261590 CN201220261590U CN202740962U CN 202740962 U CN202740962 U CN 202740962U CN 201220261590 CN201220261590 CN 201220261590 CN 201220261590 U CN201220261590 U CN 201220261590U CN 202740962 U CN202740962 U CN 202740962U
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- CN
- China
- Prior art keywords
- flue gas
- gas desulfurization
- wet
- wet flue
- desulfurization device
- 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.)
- Expired - Lifetime
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 239000003546 flue gas Substances 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title abstract description 13
- 239000002351 wastewater Substances 0.000 claims abstract description 61
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 239000000428 dust Substances 0.000 claims abstract description 17
- 239000012717 electrostatic precipitator Substances 0.000 claims abstract description 10
- 238000005507 spraying Methods 0.000 claims abstract description 9
- 238000006477 desulfuration reaction Methods 0.000 claims description 50
- 230000023556 desulfurization Effects 0.000 claims description 50
- 239000007921 spray Substances 0.000 claims description 9
- 238000000889 atomisation Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 239000003245 coal Substances 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000011221 initial treatment Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The utility model discloses a wet-method flue gas desulphurization device which consists of an electrostatic precipitator (2) and a wet-method flue gas desulphurization device (4), wherein the electrostatic precipitator (2) is connected with the wet-method flue gas desulphurization device (4) through an inlet flue (3) of the wet-method flue gas desulphurization device (4); and the top of the wet-method flue gas desulphurization device (4) is connected with an outlet flue (5). According to the wet-method flue gas desulphurization device disclosed by the utility model, a waste water draining pipeline (6) is connected to the bottom of the wet-method flue gas desulphurization device (4) and is connected with a waste water collecting tank (7); a water pipe (9) is connected onto the waste water collecting tank (7) and extends into an inlet flue (1); one end, which is close to the waste water collecting tank (7), of the water pipe (9) is connected with a water pump (8); and one end, which is close to the inlet flue (1), of the water pipe (9) is connected with a spraying and atomizing device (10). Dust-containing flue gas is sprayed and humidified in a front flue of the electrostatic precipitator, so that the dust removing effect of the electrostatic precipitator is improved and the near-zero discharge of waste water from a wet-method flue gas desulphurization system is realized.
Description
Technical Field
The utility model relates to a wet flue gas desulfurization device, in particular to a wet flue gas desulfurization device utilizing a flue gas humidifying and dedusting process.
Background
China has become the largest coal producing and consuming countries in the world, coal accounts for more than 70% of the total energy consumption of China, and the current situation that coal dominates in the energy structure of China cannot be changed for a long time. The energy structure mainly comprising coal determines that the electric power composition of China is mainly thermal power generation, in 2010, the installed capacity of the national power generation reaches 96219 ten thousand kilowatts, the total amount of thermal power installation is 70443 ten thousand kilowatts, the installed capacity accounts for 73.4 percent of the total installed capacity, and SO (SO) brought by electric power production is generated2Environmental pollution such as NOx and dust is the first problem in the future of China. With the continuous improvement of the environmental protection standard of China, the construction scale and proportion of the domestic coal-fired power plant desulfurization device are improved year by year. The wet flue gas desulfurization is the most mature desulfurization process with the most performance and the most stable operation condition in the prior art, and the desulfurization efficiency is more than 95 percent. The large operation of the wet flue gas desulfurization device solves the problem of SO2Problems with discharge, butA large amount of desulfurization wastewater is generated, and under the current increasingly severe environment-friendly situation, the problem that the wastewater generated in the wet flue gas desulfurization process is needed to be solved urgently is properly and safely treated. On the other hand, the improvement of the dust removal efficiency under the condition of the existing equipment is also an important problem which troubles the economic operation of the coal-fired power station.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem that through the waste water of cyclic utilization wet flue gas desulfurization play, add water spray atomization device before electrostatic precipitator, both can reach the dust collection efficiency who improves electrostatic precipitator, can reduce desulfurization wastewater discharge again to reach the purpose that further reduces coal-fired power plant environmental protection operating pressure, and promote the progress of the nearly zero release technique of coal-fired thermal power pollutant.
In order to achieve the above purpose, the utility model adopts the technical scheme that: the waste water discharged by the wet flue gas desulfurization system of the coal-fired power plant is collected by a waste water collection box, is sprayed and injected into flue gas in a front flue of the electrostatic dust collector after being pressurized by a booster water pump, and the superfine particulate matters are promoted to agglomerate by spraying and humidifying the dust-containing flue gas, so that the dust removal effect of the electrostatic dust collector is improved, and the zero discharge of the waste water of the wet flue gas desulfurization system is nearly realized.
The utility model provides a wet flue gas desulfurization device, which consists of an electrostatic dust collector (2) and a wet flue gas desulfurization device (4), wherein the electrostatic dust collector (2) is connected with the wet flue gas desulfurization device (4) through an inlet flue (3) of the wet flue gas desulfurization device; the top of the wet flue gas desulfurization device (4) is connected with an outlet flue (5), the bottom of the wet flue gas desulfurization device (4) is connected with a wastewater discharge pipeline (6), and the wastewater discharge pipeline (6) is connected with a wastewater collection box (7); a water pipe (9) is connected to the waste water collecting tank (7) and extends into the inlet flue (1); one end of the water pipe (9) close to the wastewater collection box (7) is connected with the water pump (8), and one end of the water pipe (9) close to the inlet flue (1) is connected with the water spraying and atomizing device (10).
The water spraying and atomizing device (10) is supported by a steel frame structure and is arranged in an inlet flue (1) in front of the electrostatic dust collector (2).
The nozzle of the water spraying and atomizing device (10) and the water pipe (9) can be detached separately.
The water spraying and atomizing device (10) adjusts the number of the spray heads according to the size of the inlet flue (1) of the electrostatic dust collector and the flow rate of flue gas.
The water pumps (8) are one or more pressure-increasing water pumps.
The waste water collecting box (7) is arranged at a position lower than the wet flue gas desulfurization device (4), and waste water is discharged through the waste water discharge pipeline (6).
Furthermore, the water pipe (9) adopts a sealing measure at the position of entering the inlet flue (1) to prevent the flue from leaking air.
Furthermore, a wastewater primary treatment device is arranged on the wastewater discharge pipeline (6), and wastewater enters a wastewater collection box (7) after primary treatment.
Furthermore, a stirring device is arranged in the waste water collecting box (7).
Furthermore, an anti-abrasion facility is additionally arranged on the side of the flue gas inlet of the inlet flue (1) of the water pipe (9).
The utility model has the advantages that:
the utility model discloses a set up wet flue gas desulfurization waste water header, can realize that wet flue gas desulfurization device wastewater discharge system and flue gas humidification system can independent operation respectively to this keeps coal-fired power plant wet flue gas desulfurization flue gas humidification system operational reliability. The waste water collection box can collect waste water from other sources at the same time, and is favorable for promoting the coal-fired power plant to realize zero discharge of waste water.
Drawings
FIG. 1 is a schematic diagram of a wet flue gas desulfurization apparatus of the present invention;
FIG. 2 is a schematic view of an embodiment of the wet flue gas desulfurization apparatus of the present invention with a pretreatment apparatus added;
FIG. 3 is a schematic view of the wet flue gas desulfurization apparatus of the present invention externally connected with other waste water.
Wherein,
1-inlet flue of electrostatic precipitator 2-inlet flue of electrostatic precipitator 3 wet flue gas desulfurization device
4-wet flue gas desulfurization device 5-outlet flue 6-waste water discharge pipeline
7-wet flue gas desulfurization wastewater collection box 8-water pump 9-water pipe 10-water spray atomization device
Detailed Description
Example 1
The utility model discloses a wet flue gas desulfurization device of a coal-fired power plant, the bottom of the wet flue gas desulfurization device (4) is connected with a waste water discharge pipeline (6), and the waste water discharge pipeline (6) is connected with a waste water collecting box (7); a water pipe (9) is connected to the waste water collecting box (7) and extends into the inlet flue (1) and is positioned at the front end of the electrostatic dust collector (2); one end of the water pipe (9) close to the wastewater collection box (7) is connected with the water pump (8), and one end of the water pipe (9) close to the inlet flue (1) is connected with the water spray atomization device (10). In order to keep the atomization effect of the spray humidifying device, a booster water pump can be selected according to the pressure requirement, and the arrangement number and the arrangement mode of the nozzles of the flue gas humidification water spray atomizing device can be selected according to the flue gas treatment capacity. In order to ensure the durable performance of the device, the water spraying and atomizing device (10) is supported by a steel frame structure and is arranged in an inlet flue (1) in front of the electrostatic dust collector (2). And the nozzle of the water spraying and atomizing device (10) and the water pipe (9) can be detached separately, so that the cleaning and the replacement of technicians are facilitated.
Example 2
As shown in figure 2, the utility model discloses can get rid of the pipeline (6) at waste water and install useless pretreatment of water device, get into waste water collecting box (7) after the waste water preliminary treatment, be provided with agitating unit in waste water collecting box (7), the transport of the waste water of being convenient for and prevent that the waste water outlet from blockking up.
Example 3
As shown in figure 3, the waste water collecting tank (7) can also receive other waste water in the coal-fired power plant region through a pipeline, and the wet flue gas desulfurization device can receive waste water from other sources in the coal-fired power plant region and is beneficial to realizing zero discharge of the waste water in the coal-fired power plant. The water pipe (9) is additionally provided with an anti-abrasion facility at one side of a flue gas inlet in the inlet flue (1) to prevent the water pipe from being abraded, and the water pipe (9) adopts a sealing measure at the position of entering the inlet flue (1) to prevent the flue from leaking air.
Although the present invention has been described with reference to the above embodiments, it is not intended to limit the present invention, and those skilled in the art can make modifications and decorations without departing from the spirit and scope of the present invention, so that the scope of the present invention is defined by the appended claims.
Claims (10)
1. A wet flue gas desulfurization device comprises an electrostatic dust collector (2) and a wet flue gas desulfurization device (4), wherein the electrostatic dust collector (2) is connected with the wet flue gas desulfurization device (4) through an inlet flue (3) of the wet flue gas desulfurization device; the top of the wet flue gas desulfurization device (4) is connected with an outlet flue (5), and the wet flue gas desulfurization device is characterized in that the bottom of the wet flue gas desulfurization device (4) is connected with a wastewater discharge pipeline (6), and the wastewater discharge pipeline (6) is connected with a wastewater collection box (7); a water pipe (9) is connected to the waste water collecting tank (7) and extends into the inlet flue (1); one end of the water pipe (9) close to the wastewater collection box (7) is connected with the water pump (8), and one end of the water pipe (9) close to the inlet flue (1) is connected with the water spraying and atomizing device (10).
2. The wet flue gas desulfurization device according to claim 1, wherein the water spray atomization device (10) is supported by a steel frame structure and is disposed in the inlet flue (1) in front of the electrostatic precipitator (2).
3. The wet flue gas desulfurization device according to claim 1, wherein the nozzle of the water spray atomization device (10) is detachable from the water pipe (9).
4. The wet flue gas desulfurization device according to claim 1, wherein the water spray atomization device (10) adjusts the number of the nozzles according to the size of the inlet flue (1) of the electrostatic precipitator and the flue gas flow rate.
5. The wet flue gas desulfurization device according to claim 1, wherein the water pump (8) is one or more of a booster water pump.
6. The wet flue gas desulfurization device according to claim 1, wherein the wastewater collection tank (7) is placed lower than the wet flue gas desulfurization device (4), and wastewater is discharged through the wastewater discharge pipe (6).
7. A wet flue gas desulfurization device according to claim 1, wherein the water pipe (9) is sealed at the position of entering the inlet flue (1) to prevent the flue from leaking air.
8. The wet flue gas desulfurization apparatus according to claim 1, wherein the wastewater discharge pipe (6) is provided with a wastewater pretreatment device, and the wastewater enters the wastewater collection tank (7) after being preliminarily treated.
9. The wet flue gas desulfurization device according to claim 8, wherein a stirring device is provided in the wastewater collection tank (7).
10. A wet flue gas desulfurization apparatus according to claim 1, wherein the water pipe (9) is provided with an anti-wear means on the side of the flue gas inlet in the inlet flue (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220261590 CN202740962U (en) | 2012-06-04 | 2012-06-04 | Wet-method flue gas desulphurization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220261590 CN202740962U (en) | 2012-06-04 | 2012-06-04 | Wet-method flue gas desulphurization device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202740962U true CN202740962U (en) | 2013-02-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220261590 Expired - Lifetime CN202740962U (en) | 2012-06-04 | 2012-06-04 | Wet-method flue gas desulphurization device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202740962U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104014217A (en) * | 2014-06-18 | 2014-09-03 | 上海龙净环保科技工程有限公司 | System and process for removing PM2.5 through wet flue gas demercuration and cooperative desulfurization |
| CN104226059A (en) * | 2014-08-14 | 2014-12-24 | 福建光明星能源环保有限公司 | Two-stage spraying high-voltage electrostatic waste gas treatment device of printing and dyeing setting machine |
| CN106587225A (en) * | 2016-12-07 | 2017-04-26 | 浙江德创环保科技股份有限公司 | Zero discharge process for desulfurization wastewater |
-
2012
- 2012-06-04 CN CN 201220261590 patent/CN202740962U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104014217A (en) * | 2014-06-18 | 2014-09-03 | 上海龙净环保科技工程有限公司 | System and process for removing PM2.5 through wet flue gas demercuration and cooperative desulfurization |
| CN104014217B (en) * | 2014-06-18 | 2016-03-23 | 上海龙净环保科技工程有限公司 | A kind of wet flue gas demercuration coordinated desulfurization take off system and the technique of PM2.5 |
| CN104226059A (en) * | 2014-08-14 | 2014-12-24 | 福建光明星能源环保有限公司 | Two-stage spraying high-voltage electrostatic waste gas treatment device of printing and dyeing setting machine |
| CN106587225A (en) * | 2016-12-07 | 2017-04-26 | 浙江德创环保科技股份有限公司 | Zero discharge process for desulfurization wastewater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100097 Beijing Haidian District Zizhuyuan Road No. 120 Patentee after: DATANG ENVIRONMENT INDUSTRY GROUP Co.,Ltd. Address before: 100097 Beijing Haidian District Zizhuyuan Road No. 120 Patentee before: DATANG TECHNOLOGY INDUSTRY GROUP CO.,LTD. Address after: 100097 Beijing Haidian District Zizhuyuan Road No. 120 Patentee after: DATANG TECHNOLOGY INDUSTRY GROUP CO.,LTD. Address before: 100097 Beijing Haidian District Zizhuyuan Road No. 120 Patentee before: DATANG TECHNOLOGY INDUSTRY Co.,Ltd. Address after: 100097 Beijing Haidian District Zizhuyuan Road No. 120 Patentee after: DATANG TECHNOLOGY INDUSTRY Co.,Ltd. Address before: 100097 Beijing Haidian District Zizhuyuan Road No. 120 Patentee before: CHINA DATANG GROUP ENVIRONMENT TECHNOLOGY CO.,LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130220 |