CN210814666U - Seawater flue gas desulfurization liquid recovery device - Google Patents
Seawater flue gas desulfurization liquid recovery device Download PDFInfo
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- CN210814666U CN210814666U CN201921501275.8U CN201921501275U CN210814666U CN 210814666 U CN210814666 U CN 210814666U CN 201921501275 U CN201921501275 U CN 201921501275U CN 210814666 U CN210814666 U CN 210814666U
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- flue gas
- aeration tank
- venturi ejector
- seawater
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Abstract
The utility model discloses a seawater flue gas desulfurization liquid recovery device, wherein a flue gas inlet is arranged at one side of the middle lower part of a tower body, a flue gas outlet is arranged at the top of the tower body, a waste liquid port is arranged at the bottom of the tower body, and the waste liquid port is communicated with a recovery module through a pipeline; the recovery module is including filling up the aeration tank of sea water, the aeration tank bottom sets up the venturi ejector, and venturi ejector one end has a plurality of nozzles through the pipeline intercommunication, and the nozzle is located the surface of water below the aeration tank, and the venturi ejector other end communicates to the aeration tank water pump through the pipeline, and venturi ejector upside still communicates there is the pressurized fan, and the aeration tank water pump other end communicates to the aeration tank surface of water below. The utility model provides a sea water flue gas desulfurization liquid recovery unit adopts the combination of forced draught fan, venturi ejector and aeration tank water pump, and the oxygen utilization ratio of this combination is high, oxygen transfer rate is fast, and liquid-gas mixture is abundant, and power efficiency is high, only needs the forced draught fan of lower consumption can accomplish the mixture, and the energy consumption also can be along with reducing, greatly reduced the treatment cost of desulfurization sea water.
Description
Technical Field
The utility model relates to a flue gas desulfurization device field, concretely relates to sea water flue gas desulfurization liquid recovery unit.
Background
The existing seawater flue gas desulfurization is a desulfurization process for absorbing SO2 in flue gas by using natural alkalinity of seawater. As rainwater brings alkaline substances (carbonate) of the land rock stratum into the sea, natural seawater is generally alkaline, the pH value is generally more than 7, the main components of the natural seawater are chloride, sulfate and a part of soluble carbonate, and the natural alkalinity is about 1.2-2.5 mmol/L in terms of bicarbonate (HCO3-), SO that the seawater has natural carbonation buffering capacity and SO2 absorption capacity. One basic theoretical basis for seawater desulfurization is that most of the natural sulfur is present in the ocean, sulfate is one of the main components of seawater, and most of the sulfur dioxide in the environment is finally discharged to the sea in the form of sulfate.
The seawater desulfurization process is generally divided into two processes: SO2 in the flue gas contacts with seawater to generate SO3 through chemical reaction2-The concentration of H + in the seawater after absorbing SO2 is increased, SO that the acidity of the seawater is enhanced; mixing the seawater after absorbing sulfur dioxide with a large amount of undesulfurated seawater, and recovering SO3 in the seawater by a seawater recovery system2-Oxidized to stable SO32-And the pH value and COD of the seawater are adjusted to reach the discharge standard and then discharged to the sea.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model aims at providing a mix abundant, the energy-concerving and environment-protective sea water flue gas doctor solution recovery unit of treatment effeciency height, low-power consumption.
In order to realize the technical purpose, the utility model discloses a scheme is: a seawater flue gas desulfurization liquid recovery device comprises a recovery module and a tower body, wherein the tower body comprises a flue gas inlet and a flue gas outlet, the flue gas inlet is formed in one side of the middle lower part of the tower body, the flue gas outlet is formed in the top of the tower body, a waste liquid port is formed in the bottom of the tower body, and the waste liquid port is communicated with the recovery module through a pipeline;
the recovery module comprises an aeration tank filled with seawater, a venturi ejector is arranged at the bottom of the aeration tank, one end of the venturi ejector is communicated with a plurality of nozzles through a pipeline, the nozzles are positioned below the water surface of the aeration tank, the other end of the venturi ejector is communicated to an aeration tank water pump through a pipeline, a pressurizing fan is further communicated on the upper side of the venturi ejector, and the other end of the aeration tank water pump is communicated below the water surface of the aeration tank;
the tower body middle part has set gradually packing layer, atomizing and has sprayed layer, defogging layer, still be provided with air current guide stick layer between flue gas entry and the packing layer.
Preferably, a steam heater is further arranged between the demisting layer and the flue gas outlet, and a steam inlet is arranged on one side of the steam heater.
Preferably, the atomization spraying layer is communicated to a spraying water pump through a pipeline, and the other end of the spraying water pump is communicated to seawater.
Preferably, a blast pressurization valve is further arranged between the pressurization fan and the venturi ejector, a self-suction air branch pipe is arranged on a pipeline between the pressurization fan and the venturi ejector, and a self-suction air valve is arranged on the self-suction air branch pipe.
Preferably, a drain pipe is arranged at one end of the aeration tank, a detection module is further arranged at the front end of the drain pipe, and the pH value and the COD value in the aeration tank can be discharged to the sea through the drain pipe after reaching the standard.
The beneficial effects of the utility model, the combination of booster fan, venturi ejector and aeration tank water pump is adopted to the sea water flue gas desulfurization liquid recovery unit of this application, and the oxygen utilization ratio of this combination is high, oxygen transmission speed is fast, and the liquid-gas mixture is abundant, and power efficiency is high, only needs the booster fan of lower consumption can accomplish the mixture, and the energy consumption also can be along with reducing, greatly reduced the treatment cost of desulfurization sea water.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the specific embodiment of the present invention is a seawater flue gas desulfurization solution recovery device, comprising a recovery module 4 and a tower body 1, wherein the tower body 1 comprises a flue gas inlet 2 and a flue gas outlet 3, the flue gas inlet 2 is arranged at one side of the middle lower part of the tower body 1, the flue gas outlet 3 is arranged at the top of the tower body 1, the bottom of the tower body 1 is provided with a waste liquid port 12, and the waste liquid port 12 is communicated with the recovery module 4 through a pipeline;
the recovery module 4 comprises an aeration tank 401 filled with seawater, a venturi ejector 404 is arranged at the bottom of the aeration tank 401, one end of the venturi ejector 404 is communicated with a plurality of nozzles 405 through a pipeline, the nozzles 405 are positioned below the water surface of the aeration tank 401, the other end of the venturi ejector 404 is communicated to an aeration tank water pump 403 through a pipeline, the upper side of the venturi ejector 404 is also communicated with a pressurizing fan 402, and the other end of the aeration tank water pump 403 is communicated below the water surface of the aeration tank 401;
the tower body 1 middle part has set gradually packing layer 5, atomizing and has sprayed layer 6, defogging layer 7, still be provided with air current guide rod layer 9 between flue gas entry 2 and packing layer 5.
A steam heater 8 is further arranged between the demisting layer 7 and the smoke outlet 3, and a steam inlet 10 is arranged on one side of the steam heater 8. The smoke at the outlet of the absorption tower is in a saturated state, the main component of the smoke is water vapor, and the white smoke of the smoke can be removed by heating and heating the steam through a steam heater.
The atomization spraying layer 6 is communicated to a spraying water pump 11 through a pipeline, and the other end of the spraying water pump 11 is communicated to seawater. The seawater can be introduced into the tower body for spraying through the spray water pump.
For better control air flow, a blast pressurization valve 406 is further arranged between the pressurization fan 402 and the venturi ejector 404, a self-suction air branch pipe 408 is arranged on a pipeline between the pressurization fan 402 and the venturi ejector 404, and a self-suction air valve 407 is arranged on the self-suction air branch pipe 408. The flow of air can be controlled by the blast pressurization valve; when a larger air flow is required, the self-suction air valve can be opened to increase the air flow.
In order to ensure safe and compliant discharge, a drain pipe 410 is arranged at one end of the aeration tank 401, a detection module 409 is further arranged at the front end of the drain pipe 410, and the pH value and the COD value in the aeration tank 401 can reach the standard and then can be discharged to the sea through the drain pipe.
The principle of the desulfurization solution recovery device of the application is explained as follows: after the seawater absorbing sulfur dioxide flows into the aeration tank through the waste liquid port, the seawater absorbing sulfur dioxide is pumped to the Venturi ejector by the water pump of the aeration tank, and the high-speed fluid in the Venturi ejector shears the gas into tiny bubbles to form an oxygen-enriched gas-liquid mixture; the turbulent flow generated by the jet aerator enables the gas/liquid contact surface to be continuously updated, which is beneficial to the transfer of oxygen, and the turbulent flow interwoven with gas and liquid is horizontally ejected by the outer nozzle. The gas-liquid mixture generates intensive mixing in the pool and carries the surrounding liquid to flow forward to form integral mixing and circulation, thereby achieving the purpose of fully oxidizing sulfite ions in the seawater.
The specific process is described as follows:
(1) a Venturi ejector is arranged on a pipeline in the aeration tank;
(2) air enters the Venturi ejector through the small-flow pressurizing fan;
(3) the seawater which absorbs sulfur dioxide in the aeration tank enters a Venturi ejector through an aeration tank water pump;
(4) the high-speed fluid in the Venturi ejector shears the gas into tiny bubbles to form an oxygen-enriched gas-liquid mixture;
(5) the tail end of the aeration branch pipeline is provided with a nozzle, and the turbulent flow of gas-liquid interweaving is horizontally ejected through an outer nozzle;
(6) the gas-liquid mixture generates intensive mixing in the pool, so that the sulfite ions in the seawater are fully oxidized in the aeration pool.
The traditional device only adopts a fan to directly inject air into seawater in the aeration tank to remove SO32-By oxidation to SO42-The contact area of air and seawater is limited, and the air and seawater are not fully mixed, so that the air aeration method of the traditional device needs to adopt large flowAnd the aeration fan with high energy consumption greatly increases the energy consumption, and further causes high treatment cost of the desulfurized seawater. The relative energy consumption of the novel seawater recovery system of this patent reduces, great reduction desulfurization seawater treatment cost.
The utility model provides a sea water flue gas desulfurization liquid recovery unit adopts the combination of forced draught fan, venturi ejector and aeration tank water pump, and the oxygen utilization ratio of this combination is high, oxygen transfer rate is fast, and liquid-gas mixture is abundant, and power efficiency is high, only needs the forced draught fan of lower consumption can accomplish the mixture, and the energy consumption also can be along with reducing, greatly reduced the treatment cost of desulfurization sea water.
The above, only do the preferred embodiment of the present invention, not used to limit the present invention, all the technical matters of the present invention should be included in the protection scope of the present invention for any slight modification, equivalent replacement and improvement of the above embodiments.
Claims (5)
1. The utility model provides a sea water flue gas desulfurization liquid recovery unit which characterized in that: the recovery tower comprises a recovery module and a tower body, wherein the tower body comprises a flue gas inlet and a flue gas outlet, the flue gas inlet is arranged on one side of the middle lower part of the tower body, the flue gas outlet is arranged at the top of the tower body, a waste liquid port is arranged at the bottom of the tower body, and the waste liquid port is communicated with the recovery module through a pipeline;
the recovery module comprises an aeration tank filled with seawater, a venturi ejector is arranged at the bottom of the aeration tank, one end of the venturi ejector is communicated with a plurality of nozzles through a pipeline, the nozzles are positioned below the water surface of the aeration tank, the other end of the venturi ejector is communicated to an aeration tank water pump through a pipeline, a pressurizing fan is further communicated on the upper side of the venturi ejector, and the other end of the aeration tank water pump is communicated below the water surface of the aeration tank;
the tower body middle part has set gradually packing layer, atomizing and has sprayed layer, defogging layer, still be provided with air current guide stick layer between flue gas entry and the packing layer.
2. The seawater flue gas desulfurization solution recovery device according to claim 1, characterized in that: a steam heater is further arranged between the demisting layer and the smoke outlet, and a steam inlet is formed in one side of the steam heater.
3. The seawater flue gas desulfurization solution recovery device according to claim 1, characterized in that: the atomization spraying layer is communicated to a spraying water pump through a pipeline, and the other end of the spraying water pump is communicated to seawater.
4. The seawater flue gas desulfurization solution recovery device according to claim 1, characterized in that: still be provided with the blast air ooze valve between booster fan and the venturi ejector, be provided with on the pipeline between booster fan and the venturi ejector from inhaling air branch, be provided with from inhaling the air valve on inhaling the air branch.
5. The seawater flue gas desulfurization solution recovery device according to claim 1, characterized in that: aeration tank one end drain pipe, the drain pipe front end still is provided with detection module, can discharge to the sea through the drain pipe after pH value and COD value reach standard in the aeration tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921501275.8U CN210814666U (en) | 2019-09-10 | 2019-09-10 | Seawater flue gas desulfurization liquid recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921501275.8U CN210814666U (en) | 2019-09-10 | 2019-09-10 | Seawater flue gas desulfurization liquid recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210814666U true CN210814666U (en) | 2020-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921501275.8U Active CN210814666U (en) | 2019-09-10 | 2019-09-10 | Seawater flue gas desulfurization liquid recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210814666U (en) |
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2019
- 2019-09-10 CN CN201921501275.8U patent/CN210814666U/en active Active
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