CN211620159U - High-salinity wastewater quenching and recycling process treatment device - Google Patents
High-salinity wastewater quenching and recycling process treatment device Download PDFInfo
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- CN211620159U CN211620159U CN201922200366.4U CN201922200366U CN211620159U CN 211620159 U CN211620159 U CN 211620159U CN 201922200366 U CN201922200366 U CN 201922200366U CN 211620159 U CN211620159 U CN 211620159U
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Abstract
The utility model discloses a treatment device for a quenching and recycling process of high-salinity wastewater, which comprises a tundish, a delivery pump and a quenching tower which are connected in sequence; the device also comprises a dry reaction tower and a bag-type dust collector; the intermediate tank is used for receiving alkali liquor in the alkali liquor pool; and a quenching spray gun is correspondingly installed at the liquid outlet end of the liquid conveying pump, the quenching spray gun is correspondingly embedded at the upper end of the quenching tower, and the quenching tower receives flue gas from a boiler from an upper end feed inlet. The device solves the problem that high-concentration salt-containing wastewater is difficult to treat, the high-salt wastewater is used as quench water in the device, salt in the wastewater is combined with high-temperature waste gas through a quench tower, the salt is converted into ash to be removed, and the desalting cost is saved; in the device, the salt inhibitor is added at the liquid inlet end of the intermediate tank, and the salt inhibitor is used to reduce the precipitation of crystal salt and prevent the blockage; and this device remains the pipeline of technology clear water as the standby water simultaneously, can correspondingly select two kinds into water treatment mode.
Description
Technical Field
The utility model relates to the technical field of environmental protection equipment, specific high salt waste water rapid cooling retrieval and utilization technology processing apparatus that says so.
Background
In the prior art, in a hazardous waste incineration treatment process, for flue gas generated by incineration, a sodium hydroxide solution is generally used for washing acidic gas in the flue gas, such as: hydrogen chloride, sulfur dioxide, hydrogen fluoride, and the like. When the pH value of the alkaline washing liquid is reduced to 7.0, adding alkali, improving the pH value, continuously recycling, and continuously recycling, wherein the salt content in the alkaline washing liquid is higher and higher, the salt concentration can reach 18 percent, even higher and higher, and the higher and higher salt content is realized, so that a large amount of near-white miscellaneous salt is separated out from the filling material and the nozzle of the alkaline washing tower in the recycling process of the alkaline washing liquid, and the blockage is caused. For the treatment of high-salinity wastewater, the following methods are generally available: (1) reverse osmosis technology; (2) sequencing batch biofilm reactor technology; (3) electrodialysis membrane separation technology; (4) salt tolerance and haemophilus; (5) distillation method. The processes need to add corresponding treatment systems, are high in cost, and some processes can generate organic matters or inorganic matters containing salt again and need secondary cleaning.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides a treatment device for the quenching and recycling process of high-salinity wastewater; the high-salt wastewater is recycled to the quenching tower process, can be treated by the existing incineration line without adding other equipment, and is used as a quenching effect, so that the salt is discharged in a powdery form under the quenching tower, the treatment cost of the salt-containing wastewater is reduced, and the using amount of corresponding quenching water can be reduced.
The technical scheme is as follows: the utility model provides a technical scheme that the problem adopted does: a treatment device for a quenching and recycling process of high-salinity wastewater comprises a tundish, a delivery pump and a quenching tower which are sequentially connected; the device also comprises a dry reaction tower and a bag-type dust collector; the intermediate tank is used for receiving alkali liquor in the alkali liquor pool; the liquid outlet end of the delivery pump is correspondingly provided with a quenching spray gun which is correspondingly embedded at the upper end of the quenching tower, the quenching tower receives flue gas from a boiler from an upper end feed inlet, a lower end discharge outlet of the quenching tower is correspondingly provided with a ship-shaped ash collecting box, the dry-type reaction tower is arranged at the other end of the ship-shaped ash collecting box, the communication between the quenching tower and the bottom of the dry-type reaction tower is realized through the ship-shaped ash collecting box, and the upper end of the quenching tower is correspondingly communicated with a bag-type dust collector.
Preferably, the liquid inlet end of the intermediate tank is also provided with a filter, and the filter correspondingly filters solid suspended matters in the alkali liquor pool; the filter can be provided in various forms, and the filter in the device is preferably provided as a bag filter.
Preferably, a static mixer is further arranged between the intermediate tank and the bag filter, and a salt inhibitor pipeline is further connected to the static mixer and can be correspondingly filled with the salt inhibitor.
Preferably, the intermediate tank is also provided with a process clean water standby pipeline which can be filled with process clean water correspondingly.
Preferably, at least one quenching spray gun is arranged and is transversely embedded at the upper end of the quenching tower; in order to atomize the high-salinity wastewater correspondingly, a plurality of quenching spray guns can be arranged correspondingly.
Preferably, the lower end of the boat-shaped dust collecting box is also provided with a dust discharging valve.
Has the advantages that: compared with the prior art, the utility model, have following advantage:
(1) the device uses high-salinity wastewater as quenching water, and is correspondingly provided with the filter to prevent blockage, so that the use amount of process clean water is reduced, and the cost is saved;
(2) the device solves the problem that high-concentration salt-containing wastewater is difficult to treat, the high-salt wastewater is used as quench water in the device, salt in the wastewater is combined with high-temperature waste gas through a quench tower, the salt is converted into ash to be removed, and the desalting cost is saved;
(3) in the device, the salt inhibitor is added at the liquid inlet end of the intermediate tank, and the salt inhibitor is used to reduce the precipitation of crystal salt and prevent the blockage; and this device remains the pipeline of technology clear water as the standby water simultaneously, can correspondingly select two kinds into water treatment mode.
Drawings
Fig. 1 is a structural diagram of the present invention.
Detailed Description
The present invention will be further clarified by the following embodiments with reference to the attached drawings, which are implemented on the premise of the technical solution of the present invention, and it should be understood that these embodiments are only used for illustrating the present invention and are not used for limiting the scope of the present invention.
As shown in fig. 1, a treatment device for a quenching and recycling process of high-salinity wastewater comprises a tundish 3, a delivery pump 4 and a quenching tower 6 which are connected in sequence; also comprises a dry reaction tower 9 and a bag-type dust collector 10; the intermediate tank 3 is used for receiving alkali liquor in the alkali liquor pool 11; the liquid outlet end of the delivery pump 4 is correspondingly provided with a quenching spray gun 5, the quenching spray gun 5 is correspondingly embedded at the upper end of a quenching tower 6, the quenching tower 6 receives flue gas from a boiler from an upper end feed inlet, a lower end discharge outlet of the quenching tower 6 is correspondingly provided with a boat-shaped ash collecting box 7, a dry type reaction tower 9 is arranged at the other end of the boat-shaped ash collecting box 7, the communication between the quenching tower 6 and the bottom of the dry type reaction tower 9 is realized through the boat-shaped ash collecting box 7, and the upper end of the quenching tower 6 is correspondingly communicated with a bag-type dust collector 10.
The liquid inlet end of the intermediate tank 3 is also provided with a filter 1, and the filter 1 correspondingly filters the alkali liquor in the alkali liquor pool 11; a static mixer 2 is also arranged between the intermediate tank 3 and the bag filter 1, and the static mixer 2 is also connected with a salt-resistant agent pipeline 12 which can be filled with salt-resistant agent correspondingly; the intermediate tank 3 is also provided with a process clean water standby pipeline 13 which can be filled with process clean water correspondingly; at least one quenching spray gun 5 is transversely embedded at the upper end of the quenching tower 6; the lower end of the boat-shaped dust collecting box 7 is also provided with a dust discharging valve 8.
The working principle of the device is as follows: from coming out in the deacidification tower, the higher alkali lye of salt is got into the pans by the alkali lye pond, add at the pans front end and establish bag filter, prevent that there is great granule salt piece entering equipment, cause the jam, and set up a static mixer between the two, and can add and hinder the salt agent, the effect of adding hindering the salt agent is the process of salt crystallization and the adhesive force on salt grain surface in furthest's the change solution, the quantity of greatly increased crystal nucleus, the granule that makes the salt crystallization becomes tiny, make the cohesion between salt grain and the salt grain extremely weak simultaneously, be difficult for gathering into bold granule.
The salt water added with the salt inhibitor is pumped into a quenching spray gun through a delivery pump, the salt water is atomized through compressed air and is sprayed into a quenching tower, the quenching tower adopts a double-fluid spray head, one way is process clear water, the other way is compressed air, the sprayed water is fine atomized water, a feed inlet of the quenching tower receives high-temperature flue gas entering from a boiler, the flue gas and water mist generate heat exchange in the quenching tower, the salt water mist is rapidly evaporated in the quenching tower, and simultaneously the hot flue gas is cooled to a lower temperature, the salt is usually present in powder or small particles, falls off along with the fly ash, enters a ship-shaped ash collecting box at the bottom of the quenching tower, is discharged through an ash discharging valve and is transported away, or enters a dry reaction tower and a bag-type dust remover along with the flue gas because of some light salinity and ash content, then the fly ash falls off along with the fly ash, thereby realizing the purposes of quenching and recycling the high-salinity wastewater and correspondingly treating the incineration flue gas.
In the device, the quenching tower is used for reducing the temperature of the flue gas from 550 ℃ to below 200 ℃ within 1S, so that the resynthesis of dioxin-caused substances is effectively inhibited under the low-temperature condition; and the high-salinity wastewater is used for replacing the original process clean water, and meanwhile, the original process clean water pipeline is reserved as the standby water.
The above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the invention and the appended claims, and all equivalent changes and modifications made according to the claims should be included in the scope of the present invention.
Claims (7)
1. A high salt waste water rapid cooling retrieval and utilization technology processing apparatus which characterized in that: comprises a middle tank (3), a delivery pump (4) and a quench tower (6) which are connected in sequence; also comprises a dry reaction tower (9) and a bag-type dust remover (10); the intermediate tank (3) is used for receiving alkali liquor in the alkali liquor pool (11); the liquid outlet end of the delivery pump (4) is correspondingly provided with a quenching spray gun (5), the quenching spray gun (5) is correspondingly embedded at the upper end of the quenching tower (6), the quenching tower (6) receives flue gas from a boiler from an upper end feed inlet, a lower end discharge port of the quenching tower (6) is correspondingly provided with a boat-shaped ash collecting box (7), the dry type reaction tower (9) is arranged at the other end of the boat-shaped ash collecting box (7), the bottom communication between the quenching tower (6) and the dry type reaction tower (9) is realized through the boat-shaped ash collecting box (7), and the upper end of the quenching tower (6) is correspondingly communicated with a bag-type dust collector (10).
2. The high-salinity wastewater quenching and recycling process treatment device according to claim 1, characterized in that: the liquid inlet end of the intermediate tank (3) is also provided with a filter (1), and the filter (1) correspondingly filters the alkali liquor in the alkali liquor pool (11).
3. The high-salinity wastewater quenching and recycling process treatment device according to claim 2, characterized in that: a static mixer (2) is also arranged between the intermediate tank (3) and the bag filter (1), and the static mixer (2) is also connected with a salt-resistant agent pipeline (12) which can be filled with salt-resistant agent correspondingly.
4. The high-salinity wastewater quenching and recycling process treatment device according to claim 1, characterized in that: the intermediate tank (3) is also provided with a process clean water standby pipeline (13) which can be filled with process clean water correspondingly.
5. The high-salinity wastewater quenching and recycling process treatment device according to claim 1, characterized in that: at least one quenching spray gun (5) is transversely embedded at the upper end of the quenching tower (6).
6. The high-salinity wastewater quenching and recycling process treatment device according to claim 1, characterized in that: the lower end of the ship-shaped ash collecting box (7) is also provided with an ash discharging valve (8).
7. The high-salinity wastewater quenching and recycling process treatment device according to claim 2, characterized in that: the filter (1) is arranged as a bag filter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922200366.4U CN211620159U (en) | 2019-12-10 | 2019-12-10 | High-salinity wastewater quenching and recycling process treatment device |
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| CN201922200366.4U CN211620159U (en) | 2019-12-10 | 2019-12-10 | High-salinity wastewater quenching and recycling process treatment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112696704A (en) * | 2020-12-28 | 2021-04-23 | 上海域德环保工程有限公司 | Quench tower with water circulation device and unpowered ash removal device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112696704A (en) * | 2020-12-28 | 2021-04-23 | 上海域德环保工程有限公司 | Quench tower with water circulation device and unpowered ash removal device |
| CN112696704B (en) * | 2020-12-28 | 2021-12-24 | 上海域德环保工程有限公司 | Quench tower with water circulation device and unpowered ash removal device |
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