CN209271069U - Flue gas pre-washing device before a kind of absorption tower - Google Patents
Flue gas pre-washing device before a kind of absorption tower Download PDFInfo
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- CN209271069U CN209271069U CN201821872513.1U CN201821872513U CN209271069U CN 209271069 U CN209271069 U CN 209271069U CN 201821872513 U CN201821872513 U CN 201821872513U CN 209271069 U CN209271069 U CN 209271069U
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- slurries
- absorption tower
- flue gas
- pipeline
- conveyance conduit
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Abstract
The utility model discloses flue gas pre-washing devices before a kind of absorption tower, belong to absorption tower apparatus field, for the absorption tower by slurry circulating pump and conveyance conduit conveying slurries, including pre-wash spraying layer, slurries collection bucket, slurries return duct and slurries pipeline；The spraying layer that pre-washes is connected in flue, and through slurries pipeline with conveyance conduit；The conveyance conduit is connected by slurry circulating pump with absorption tower；The absorption tower is also connected with slurries return duct；Slurries return duct one end is connected with the slurries collection bucket for being set to and pre-washing below spraying layer, recycles for serum recycle.Flue gas pre-washing device before a kind of absorption tower of the utility model can effectively improve the pollutant removing ability on absorption tower, prevent overtemperature flue gas from entering absorption tower and damage anti-corrosion inside absorption tower and absorb tower internals, and have the function of saving emergency spray.
Description
Technical field
The utility model belongs to absorption tower apparatus field, relates in particular to flue gas pre-washing device before a kind of absorption tower.
Background technique
Increasingly strict with China's atmosphere pollutants emission standards, coal unit is both needed to complete minimum discharge to change at present
It makes, to reach SO2 gas concentration less than 35mg/m3, dust concentration is less than 5mg/m3, and nitrous oxides concentration is less than 50mg/m3's
Minimum discharge standard.Conventional limestone-gypsum wet flue gas desulfurizing flue gas is entered by absorption tower entrance at present, de- by spraying layer
Through demister by smoke stack emission after depollution object；Simultaneously in order to guarantee boiler smoke temperature anomaly increase when absorption tower it is absolute
Safety is provided with emergency spray system in former smoke inlet flue.
Absorption tower will realize minimum discharge, and usual desulfuration efficiency will reach 99% or more, and absorption tower collaboration efficiency of dust collection will reach
To 80% or more, conventional desulfurization absorption tower is extremely difficult to so efficient pollutant removing ability at present, needs accordingly to be transformed
To meet minimum discharge requirement.
However no one kind effectively improves absorption tower pollutant removing ability in the prior art and taking into account prevents flue gas from surpassing
The device of temperature.
Utility model content
The purpose of this utility model is to provide flue gas pre-washing device before a kind of absorption tower, quasi-solution in view of the above shortcomings
Pollutant removing ability in absorption tower is certainly effectively improved without one kind in the prior art and takes into account the device for preventing flue gas overtemperature.
To achieve the above object, the utility model provides the following technical solutions:
Flue gas pre-washing device before a kind of absorption tower, for conveying the suction of slurries by slurry circulating pump 2 and conveyance conduit 9
Tower 1 is received, including pre-washes spraying layer 4, slurries collection bucket 5, slurries return duct 6 and slurries pipeline 8；It is described to pre-wash spraying layer
4 are set in flue, and are connected by slurries pipeline 8 with conveyance conduit 9；The conveyance conduit 9 is by slurry circulating pump 2 and absorbs
Tower 1 is connected；The absorption tower 1 is also connected with slurries return duct 6；Described 6 one end of slurries return duct is connected with to be set to and pre-wash
The slurries collection bucket 5 of 4 lower section of spraying layer, is recycled for serum recycle.
Due to above structure, slurry circulating pump 2 extracts the slurries in absorption tower 1, and transports suction by conveyance conduit 9
It receives and carries out spraying and desorbing pollutant at the top of tower 1；Slurries pipeline 8 is connected with conveyance conduit 9, and slurries pipeline 8 is equivalent to conveyance conduit 9
Branch, the slurries that shared slurry circulating pump 2 is extracted out of absorption tower 1；Slurries in branch are transported to pre- along slurries pipeline 8
Wash spray layer 4 pre-washes spraying layer 4 in flue, and slurries are anti-by pre-washing spraying layer (4) nozzle and former smoke contacts
It answers, realizes the washing and cooling to flue gas.Unreacted and not by flue gas carry slurries fall into slurries collection bucket (5), pass through slurry
Liquid return duct (6) flows back to absorption tower (1).Slurries return duct (6) is arranged in absorption tower (1) liquid level or less；After washing
Flue gas enters further progress fume treatment in absorption tower (1).It is greatly reduced by pre-washing into adsorption tower smoke
The pollutant concentrations such as SO2 gas and dust effectively raise the pollutant removing ability on absorption tower, can effectively prevent into suction
Receive the flue gas overtemperature of tower.The pressure of slurry circulating pump outlet slurry is utilized, eliminates independently installed slurry feeding pump, saves
Emergency spray amount reduces investment and operating cost.
It further, further include slurries electrically operated valve 3；It is electronic by slurries between the slurries pipeline 8 and conveyance conduit 9
Valve 3 is connected, and the slurries electrically operated valve 3 can control the on-off between slurries pipeline 8 and conveyance conduit 9.
Due to above structure, on-off of the slurries electrically operated valve 3 between controllable slurries pipeline 8 and conveyance conduit 9 is being needed
Used when anti-overtemperature or insufficient absorption tower (1) reaction.
Further, further include flushing water pipeline 7, the flushing water pipeline 7 is connected on slurries pipeline 8, for pipeline and
Pre-washing device rinses.
Due to above structure, pipeline and spray nozzle clogging when the present apparatus is stopped transport in order to prevent are arranged on slurries pipeline and rinse
Waterpipe 7, to ensure that present apparatus normal table is run.
Further, the conveyance conduit 9 is identical with 3 quantity of slurries electrically operated valve, and at least two.
Due to above structure, each conveyance conduit 9 corresponds to a slurries electrically operated valve 3, and branch passes through respective slurry
Liquid electrically operated valve 3 is commonly connected to synthesize a branch on slurries pipeline 8, starches through slurries pipeline 8 to the conveying of spraying layer 4 is pre-washed
Liquid.
Further, the conveyance conduit 9 and 3 quantity of slurries electrically operated valve are respectively four.
Due to above structure, the conveyance conduit 9 and 3 quantity of slurries electrically operated valve are respectively four, increase slurry flow.
Further, pre-washing spraying layer 4 is 1 ~ 3.
Due to above structure, pre-washing spraying layer 4 is 1 ~ 3, increases the contact area of flue gas and slurries.
Further, the slurries electrically operated valve 3 is connected with the temperature sensor of corresponding number being set in flue, is used for
Incude when flue temperature is more than preset range and opens slurries electrically operated valve 3；
Due to above structure, by temperature sensor measurement flue temperature, intelligent control slurries electrically operated valve 3 is opened or is closed
It closes, it is known manner that temperature sensor, which controls 3 mode of slurries electrically operated valve, is not repeated.
Further, the temperature sensor is equipped with respectively different temperature sensor values.
Due to above structure, temperature sensor is equipped with respectively different temperature sensor values, is equivalent to and sets different shelves
Position, such as T3 grades of < of T2 grades of < of T1 grades of temperature, when reaching T2 grades, T1 grades, T2 grades are opened corresponding slurries electrically operated valve 3, are made
Temperature is higher, and the slurries electrically operated valve more than 3 of opening, slurry flow is bigger, and cooling efficiency is higher.
The beneficial effects of the utility model are:
1. pre-washed by the present apparatus greatly reduce it is dense into the pollutants such as SO2 gas and dust in adsorption tower smoke
Degree, effectively raises the pollutant removing ability on absorption tower, is difficult to reach 99% to solve current absorption tower desulfuration efficiency
Above problem.
2. pre-washing spraying cooling effect by the present apparatus, the flue gas overtemperature into absorption tower can effectively prevent, to solve
It has determined the safe operation problem on absorption tower caused by the flue gas exception overtemperature occurred at present.
3. the present apparatus pre-washes the pressure for taking full advantage of slurry circulating pump outlet slurry, independently installed slurries are eliminated
Delivery pump, and in the case where not all circulation pump shutdown guarantee absorption tower inlet flue gas not overtemperature, saved accident amount of water sprayed,
Reduce investment and operating cost.
4. pipeline and spray nozzle clogging when the present apparatus is stopped transport in order to prevent, are arranged flushing water pipeline, on slurries pipeline with true
The device normal table that breaks even operation.
5. book apparatus structure is simple and convenient to operate, is practical.
Detailed description of the invention
Fig. 1 is the principle schematic diagram of the utility model；
In attached drawing: the absorption tower 1-, 2- slurry circulating pump, 3- slurries electrically operated valve, 4- pre-washes spraying layer, 5- slurries are collected
Bucket, 6- slurries return duct, 7- flushing water pipeline, 8- slurries pipeline, 9- conveyance conduit.
Specific embodiment
With reference to the accompanying drawing with specific embodiment, the present invention is described in more detail, but the utility model not office
It is limited to following embodiment.
Embodiment one:
As shown in Fig. 1.Flue gas pre-washing device before a kind of absorption tower, for passing through slurry circulating pump 2 and conveyance conduit 9
The absorption tower 1 of slurries is conveyed, including pre-washes spraying layer 4, slurries collection bucket 5, slurries return duct 6 and slurries pipeline 8；It is described
Spraying layer 4 is pre-washed in flue, and be connected with conveyance conduit 9 by slurries pipeline 8；The conveyance conduit 9 passes through slurries
Circulating pump 2 is connected with absorption tower 1；The absorption tower 1 is also connected with slurries return duct 6；Described 6 one end of slurries return duct connects
There is the slurries collection bucket 5 for being set to and pre-washing 4 lower section of spraying layer, is recycled for serum recycle.Slurry circulating pump 2 will be in absorption tower 1
Slurries extract, and transported by conveyance conduit 9 to carrying out spraying and desorbing pollutant at the top of absorption tower 1；Slurries pipeline 8 and conveying
Pipeline 9 is connected, and slurries pipeline 8 is equivalent to the branch of conveyance conduit 9, the slurry that shared slurry circulating pump 2 is extracted out of absorption tower 1
Liquid；Slurries in branch are transported to along slurries pipeline 8 pre-washes spraying layer 4, pre-washes spraying layer 4 in flue, slurries
It is reacted by pre-washing spraying layer (4) nozzle with former smoke contacts, realizes the washing and cooling to flue gas.Unreacted and not by cigarette
The slurries that gas carries fall into slurries collection bucket (5), flow back to absorption tower (1) by slurries return duct (6).Slurries return duct
(6) it is arranged in absorption tower (1) liquid level or less；Flue gas after washing enters further progress fume treatment in absorption tower (1).
It is greatly reduced by pre-washing into the pollutant concentrations such as SO2 gas and dust in adsorption tower smoke, effectively raises suction
The pollutant removing ability for receiving tower, can effectively prevent the flue gas overtemperature into absorption tower.Slurry circulating pump outlet slurry is utilized
Pressure, eliminate independently installed slurry feeding pump, saved accident amount of water sprayed, reduce investment and operating cost.
Embodiment two:
As shown in Fig. 1.Flue gas pre-washing device before a kind of absorption tower, for passing through slurry circulating pump 2 and conveyance conduit 9
The absorption tower 1 of slurries is conveyed, including pre-washes spraying layer 4, slurries collection bucket 5, slurries return duct 6 and slurries pipeline 8；It is described
Spraying layer 4 is pre-washed in flue, and be connected with conveyance conduit 9 by slurries pipeline 8；The conveyance conduit 9 passes through slurries
Circulating pump 2 is connected with absorption tower 1；The absorption tower 1 is also connected with slurries return duct 6；Described 6 one end of slurries return duct connects
There is the slurries collection bucket 5 for being set to and pre-washing 4 lower section of spraying layer, is recycled for serum recycle.Slurry circulating pump 2 will be in absorption tower 1
Slurries extract, and transported by conveyance conduit 9 to carrying out spraying and desorbing pollutant at the top of absorption tower 1；Slurries pipeline 8 and conveying
Pipeline 9 is connected, and slurries pipeline 8 is equivalent to the branch of conveyance conduit 9, the slurry that shared slurry circulating pump 2 is extracted out of absorption tower 1
Liquid；Slurries in branch are transported to along slurries pipeline 8 pre-washes spraying layer 4, pre-washes spraying layer 4 in flue, slurries
It is reacted by pre-washing spraying layer (4) nozzle with former smoke contacts, realizes the washing and cooling to flue gas.Unreacted and not by cigarette
The slurries that gas carries fall into slurries collection bucket (5), flow back to absorption tower (1) by slurries return duct (6).Slurries return duct
(6) it is arranged in absorption tower (1) liquid level or less；Flue gas after washing enters further progress fume treatment in absorption tower (1).
It is greatly reduced by pre-washing into the pollutant concentrations such as SO2 gas and dust in adsorption tower smoke, effectively raises suction
The pollutant removing ability for receiving tower, can effectively prevent the flue gas overtemperature into absorption tower.Slurry circulating pump outlet slurry is utilized
Pressure, eliminate independently installed slurry feeding pump, saved accident amount of water sprayed, reduce investment and operating cost.
The present apparatus further includes slurries electrically operated valve 3；Pass through slurries motor-driven valve between the slurries pipeline 8 and conveyance conduit 9
Door 3 is connected, and the slurries electrically operated valve 3 can control the on-off between slurries pipeline 8 and conveyance conduit 9.Slurries electrically operated valve 3 exists
On-off between controllable slurries pipeline 8 and conveyance conduit 9, when needing to carry out anti-overtemperature or absorption tower (1) reaction is insufficient
It uses.
The present apparatus further includes flushing water pipeline 7, and the flushing water pipeline 7 is connected on slurries pipeline 8, is used for pipeline and prewashing
Wash device flushing.Pipeline and spray nozzle clogging when the present apparatus is stopped transport in order to prevent, are arranged flushing water pipeline 7 on slurries pipeline, with
Ensure that present apparatus normal table is run.
The conveyance conduit 9 is identical with 3 quantity of slurries electrically operated valve, and at least two.Each conveyance conduit 9 is corresponding
One slurries electrically operated valve 3, branch are commonly connected to synthesize one on slurries pipeline 8 by respective slurries electrically operated valve 3
Branch conveys slurries to spraying layer 4 is pre-washed through slurries pipeline 8.Preferably, the conveyance conduit 9 and the number of slurries electrically operated valve 3
Amount is respectively four.The conveyance conduit 9 and 3 quantity of slurries electrically operated valve are respectively four, increase slurry flow.
Pre-washing spraying layer 4 is 1 ~ 3.Pre-washing spraying layer 4 is 1 ~ 3, increases the contact area of flue gas and slurries.
Embodiment three:
On the basis of embodiment two, the temperature being set in flue that the slurries electrically operated valve 3 is connected with corresponding number is passed
Sensor opens slurries electrically operated valve 3 when for incuding flue temperature more than preset range；Pass through temperature sensor measurement flue temperature
Degree, intelligent control slurries electrically operated valve 3 open or close, and it is known manner that temperature sensor, which controls 3 mode of slurries electrically operated valve,
It does not repeat.The temperature sensor is equipped with respectively different temperature sensor values.Temperature sensor is equipped with respectively different senses
Temperature value is answered, is equivalent to and sets different gears, such as T3 grades of < of T2 grades of < of T1 grades of temperature, when reaching T2 grades, T1 grades, T2 grades
Corresponding slurries electrically operated valve 3 is opened, keeps temperature higher, the slurries electrically operated valve more than 3 of opening, slurry flow is bigger, cooling
Efficiency is higher.
To sum up, it is pre-washed and is greatly reduced into the pollutants such as SO2 gas and dust in adsorption tower smoke by the present apparatus
Concentration, effectively raises the pollutant removing ability on absorption tower, is difficult to reach to solve current absorption tower desulfuration efficiency
99% or more problem.Spraying cooling effect is pre-washed by the present apparatus, can effectively prevent the flue gas overtemperature into absorption tower, from
And solves the problems, such as the safe operation on absorption tower caused by the flue gas exception overtemperature occurred at present.The present apparatus, which pre-washes, to be made full use of
The pressure of slurry circulating pump outlet slurry eliminates independently installed slurry feeding pump, and in the feelings of not all circulation pump shutdown
Under condition guarantee absorption tower inlet flue gas not overtemperature, saved accident amount of water sprayed, reduce investment and operating cost.In order to prevent originally
Pipeline and spray nozzle clogging when device is stopped transport, are arranged flushing water pipeline on slurries pipeline, to ensure that present apparatus normal table is run.
Book apparatus structure is simple and convenient to operate, is practical.
The above is only the preferred embodiment of the present invention, and therefore it does not limit the scope of the patent of the utility model,
Equivalent structure or equivalent flow shift made by using the description of the utility model and the drawings, is directly or indirectly transported
Used in other related technical areas, it is also included in the patent protection scope of the utility model.
Claims (7)
1. flue gas pre-washing device before a kind of absorption tower, for conveying slurries by slurry circulating pump (2) and conveyance conduit (9)
Absorption tower (1), which is characterized in that including pre-washing spraying layer (4), slurries collection bucket (5), slurries return duct (6) and slurries
Pipeline (8)；Described pre-wash spraying layer (4) are connected in flue, and through slurries pipeline (8) with conveyance conduit (9)；It is described
Conveyance conduit (9) is connected by slurry circulating pump (2) with absorption tower (1)；The absorption tower (1) also with slurries return duct (6)
It is connected；Described slurries return duct (6) one end is connected with the slurries collection bucket (5) for being set to and pre-washing below spraying layer (4), for starching
Liquid circulation and stress.
2. flue gas pre-washing device before a kind of absorption tower as described in claim 1, which is characterized in that further include slurries motor-driven valve
Door (3)；It is connected between the slurries pipeline (8) and conveyance conduit (9) by slurries electrically operated valve (3), the slurries motor-driven valve
Door (3) can control the on-off between slurries pipeline (8) and conveyance conduit (9).
3. flue gas pre-washing device before a kind of absorption tower as claimed in claim 2, which is characterized in that further include flushing water pipeline
(7), the flushing water pipeline (7) is connected on slurries pipeline (8), rinses for pipeline and pre-washing device.
4. flue gas pre-washing device before a kind of absorption tower as claimed in claim 2, which is characterized in that the conveyance conduit (9)
It is identical with slurries electrically operated valve (3) quantity, and at least two.
5. flue gas pre-washing device before a kind of absorption tower as claimed in claim 4, which is characterized in that the conveyance conduit (9)
It is respectively four with slurries electrically operated valve (3) quantity.
6. flue gas pre-washing device before a kind of absorption tower as described in one of Claims 1 to 5, which is characterized in that pre-wash spray
Drenching layer (4) is 1~3.
7. flue gas pre-washing device before a kind of absorption tower as claimed in claim 4, which is characterized in that the slurries electrically operated valve
(3) temperature sensor of corresponding number being set in flue, opening when for incuding flue temperature more than preset range are connected with
Slurries electrically operated valve (3)；The temperature sensor is equipped with respectively different temperature sensor values.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821872513.1U CN209271069U (en) | 2018-11-14 | 2018-11-14 | Flue gas pre-washing device before a kind of absorption tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821872513.1U CN209271069U (en) | 2018-11-14 | 2018-11-14 | Flue gas pre-washing device before a kind of absorption tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209271069U true CN209271069U (en) | 2019-08-20 |
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ID=67601242
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821872513.1U Active CN209271069U (en) | 2018-11-14 | 2018-11-14 | Flue gas pre-washing device before a kind of absorption tower |
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| CN (1) | CN209271069U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021184682A1 (en) * | 2020-03-16 | 2021-09-23 | 上海晶盟硅材料股份有限公司 | Washing pipe for treatment of tail gas from epitaxial furnace |
-
2018
- 2018-11-14 CN CN201821872513.1U patent/CN209271069U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021184682A1 (en) * | 2020-03-16 | 2021-09-23 | 上海晶盟硅材料股份有限公司 | Washing pipe for treatment of tail gas from epitaxial furnace |
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