CN215311414U

CN215311414U - Circulating spray tower for polyaluminum ferric chloride

Info

Publication number: CN215311414U
Application number: CN202121514519.3U
Authority: CN
Inventors: 沈玉鹏
Original assignee: Maanshan Jianding Chemical Co ltd
Current assignee: Maanshan Jianding Chemical Co ltd
Priority date: 2021-07-05
Filing date: 2021-07-05
Publication date: 2021-12-28
Anticipated expiration: 2031-07-05

Abstract

The utility model discloses a circulating spray tower for polyaluminium chloride, which comprises an evaporating pot, a heater, a drain outlet and a first steam outlet, wherein the evaporating pot is arranged on one side of a spray tower body, a water outlet of the spray tower body is fixedly connected with a water inlet of the evaporating pot through a first pipeline, the heater is arranged in the evaporating pot, the first steam outlet is formed in the top of the evaporating pot, the first steam outlet of the evaporating pot is fixedly connected with an air cooler through a second pipeline, the air cooler is fixedly connected with a feeding pot through a third pipeline, liquid after being washed is discharged into the evaporating pot, the heater in the evaporating pot heats the liquid, the liquid is evaporated into steam and then discharged into the air cooler, the liquid is cooled through the air cooler, the mixed liquid is conveyed into a spray disc through a main liquid inlet pipe and a liquid inlet branch pipe by a conveying pump, and is finally sprayed out by the spray disc, thereby realizing the recycling of water resources and reducing the discharge of waste liquid.

Description

Circulating spray tower for polyaluminum ferric chloride

Technical Field

The utility model relates to a spray tower, in particular to a circulating spray tower for polyaluminum ferric chloride, and belongs to the technical field of chemical production equipment.

Background

The polyaluminum ferric chloride (PAFC) is an inorganic high-molecular coagulant formed by coagulating and hydrolyzing aluminum salt and ferric salt, and has high hydrolysis speed and weak hydration. The polyaluminum ferric chloride can generate a large amount of acid gas in the production process, and the acid gas needs to enter a spray tower for gas washing before being discharged, so that acid substances in the gas are dissolved in water, and the pollution to the air and the environment is avoided.

The existing common treatment mode of water after being subjected to gas washing by the spray tower is direct discharge, which causes waste of a large amount of water resources, and further improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a circulating spray tower for polyaluminum ferric chloride.

The purpose of the utility model can be realized by the following technical scheme: a circulating spray tower for polyaluminium chloride comprises a spray tower body, an evaporation tank, an air cooler and a feeding tank, wherein an air inlet pipe is arranged at the position, close to the bottom, of the spray tower body, an exhaust pipe is arranged at the top of the spray tower body, the evaporation tank is arranged at one side of the spray tower body, a water inlet of the evaporation tank is fixedly connected with a water outlet of the spray tower body through a first pipeline, a heater is arranged in the evaporation tank, a sewage discharge outlet is arranged at the bottom of the evaporation tank, a first steam outlet is formed in the top of the evaporation tank, the first steam outlet of the evaporation tank is fixedly connected with the air cooler through a second pipeline, the air cooler is fixedly connected with the feeding tank through a third pipeline, a feeding port is formed in the top of the evaporation tank, a conveying pump is arranged at one side of the feeding tank, and the feeding tank is fixedly connected with the conveying pump through a fourth pipeline, and the delivery pump is fixedly connected with a liquid inlet main pipe.

Further, the intake pipe is horizontal setting, the intake pipe runs through spray tower body and with spray tower body fixed connection that seals.

Furthermore, the water outlet of the spray tower body is arranged at a position close to the bottom of the spray tower body, and the water outlet of the spray tower body is positioned below the air inlet pipe.

Furthermore, a second steam outlet is formed in the top of the feeding tank, and an air return pipe is fixedly connected to the second steam outlet and fixedly connected with the evaporation tank.

Furthermore, a stirrer is arranged in the feeding tank.

Further, the feed liquor is responsible for and goes up a plurality of feed liquor branch pipe of fixedly connected with, the feed liquor branch pipe is responsible for inside intercommunication with the feed liquor, in the feed liquor branch pipe runs through spray column body and stretches into spray column, the one end fixedly connected with of feed liquor branch pipe sprays the disc, a plurality of apopore has been seted up to the bottom that sprays the disc.

Further, the inside of spraying tower body is provided with a plurality of layers of perforated plates, the top of perforated plate is provided with the packing layer, the disc that sprays sets up the top at the packing layer.

Compared with the prior art, the utility model has the beneficial effects that:

1. when the spraying disc type steam generator is used, liquid after being washed is discharged into the evaporating pot, the liquid is heated by the heater in the evaporating pot, the liquid is evaporated into steam and then discharged into the air cooler, most of the steam is condensed into liquid to enter the feeding pot through the cooling of the air cooler, the mixed liquid is conveyed into the spraying disc through the liquid inlet main pipe and the liquid inlet branch pipe by the conveying pump, and finally the mixed liquid is sprayed out of the spraying disc, so that the cyclic utilization of water resources is realized, and the discharge of waste liquid is reduced;

2. a alkaline material for neutralizing acid gas adds to the feed tank from the dog-house in, and the material can emit a large amount of heats at the dissolution in-process, and the temperature of liquid can rise once more and produce high temperature vapor, and vapor enters into the evaporating pot via the muffler backward flow, heats the liquid after the gas washing to realized thermal recycle, practiced thrift the energy.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the construction of the vaporization tank of the present invention;

FIG. 3 is a schematic view of the construction of the feed tank of the present invention;

FIG. 4 is a schematic view showing the structure of the perforated plate and the packing layer in the present invention.

In the figure: 1. a spray tower body; 2. a perforated plate; 3. a filler layer; 4. an air inlet pipe; 5. an exhaust pipe; 6. spraying a disc; 7. a liquid inlet main pipe; 8. an evaporator tank; 9. a heater; 10. an air cooler; 11. a charging tank; 12. a stirrer; 13. an air return pipe; 14. a feeding port; 15. a delivery pump; 16. a liquid inlet branch pipe.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a circulating spray tower for polyaluminium chloride comprises a spray tower body 1, an evaporation tank 8, an air cooler 10 and a feeding tank 11, wherein the side wall of the spray tower body 1 is provided with a plurality of observation ports, an air inlet pipe 4 is arranged at a position, close to the bottom, of the spray tower body 1, the air inlet pipe 4 is transversely arranged, the air inlet pipe 4 penetrates through the spray tower body 1 and is fixedly connected with the spray tower body 1 in a sealing manner, an exhaust pipe 5 is arranged at the top of the spray tower body 1, and the top of the spray tower body 1 is designed in an inverted cone shape;

an evaporating pot 8 is arranged on one side of the spray tower body 1, a water inlet of the evaporating pot 8 is fixedly connected with a water outlet of the spray tower body 1 through a first pipeline, the water outlet of the spray tower body 1 is arranged at a position, close to the bottom, of the spray tower body 1, the water outlet of the spray tower body 1 is arranged below the air inlet pipe 4, a heater 9 is arranged in the evaporating pot 8, a sewage discharge outlet is arranged at the bottom of the evaporating pot 8, a first steam outlet is formed in the top of the evaporating pot 8, and the first steam outlet of the evaporating pot 8 is fixedly connected with an air cooler 10 through a second pipeline;

the air cooler 10 is fixedly connected with the feeding tank 11 through a third pipeline, the heater 9 is arranged for evaporating and concentrating the neutralized waste liquid in the evaporation tank 8, steam generated after heating is discharged into the air cooler 10 through a first steam discharge port, then is cooled and liquefied through the air cooler 10, most of the steam becomes water and flows into the feeding tank 11, the top of the feeding tank 11 is provided with a feeding port 14, and the feeding port 14 is arranged for feeding the solution in the feeding tank 11, so that the gas washing effect is ensured;

a delivery pump 15 is arranged on one side of the feeding tank 11, the feeding tank 11 is fixedly connected with the delivery pump 15 through a fourth pipeline, a liquid inlet main pipe 7 is fixedly connected to the delivery pump 15, a second steam outlet is formed in the top of the feeding tank 11, an air return pipe 13 is fixedly connected to the second steam outlet, the air return pipe 13 is fixedly connected with the evaporating tank 8, after feeding, the material can be dissolved in the feeding tank 11 to release heat, the liquid can generate steam again, the air return pipe 13 is arranged to heat the liquid in the evaporating tank 8 by leading the steam generated in the feeding tank 11 into the evaporating tank 8, heat is recycled, a stirrer 12 is arranged in the feeding tank 11, the stirrer 12 is arranged to stir the solution in the feeding tank 11, the dissolving speed of the material is accelerated, and the stirrer 12 is in the prior art;

the feed liquor is responsible for 7 and goes up a plurality of feed liquor branch pipe 16, feed liquor branch pipe 16 is responsible for 7 inside intercommunications with the feed liquor, feed liquor branch pipe 16 runs through spray tower body 1 and stretches into in the spray tower body 1, the one end fixedly connected with of feed liquor branch pipe 16 sprays disc 6, a plurality of apopore has been seted up to the bottom that sprays disc 6, the inside of spray tower body 1 is provided with a plurality of layers of perforated plate 2, the top of perforated plate 2 is provided with packing layer 3, it sets up in the top of packing layer 3 to spray disc 6, and packing layer 3 is used for absorbing the solution that sprays disc 6 and spray and go out to increase gaseous reaction time and reaction area in spray tower body 1, make the gas washing process more thorough.

The working principle is as follows: when the acid gas neutralizing device is used, firstly, acid gas enters the spray tower body 1 through the gas inlet pipe 4, the acid gas rises along the spray tower body 1 and sequentially passes through the multi-layer porous plate 2 and the packing layer 3 for gas washing treatment, liquid for neutralizing the acid gas is sprayed out through the spray disc 6 and is sprayed on the surface of the packing layer 3, the liquid after the gas washing is discharged into the evaporation tank 8, the liquid is heated by the heater 9 in the evaporation tank 8, the liquid is evaporated into steam and then is discharged into the air cooler 10, the cooling temperature of the air cooler 10 is reduced, most of the steam is condensed into liquid which enters the feeding tank 11, alkaline materials for neutralizing the acid gas are added into the feeding tank 11 from the feeding port 14, then the stirrer 12 is stirred to rapidly dissolve the materials, a large amount of heat can be emitted during the dissolving process, then the temperature of the liquid can rise again to generate high-temperature steam, the water vapor flows back to the evaporation tank 8 through the air return pipe 13 to heat the liquid after the air washing, thereby realizing the recycling of heat and saving energy; the mixed liquid is sent into the spraying disc 6 by the delivery pump 15 through the main liquid inlet pipe 7 and the branch liquid inlet pipe 16 and is finally sprayed out by the spraying disc 6, thereby realizing the recycling of water resources and reducing the discharge of waste liquid.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the utility model. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims

1. A circulating spray tower for polyaluminium chloride is characterized by comprising a spray tower body (1), an evaporation tank (8), an air cooler (10) and a feeding tank (11), wherein an air inlet pipe (4) is arranged at a position, close to the bottom, of the spray tower body (1), an exhaust pipe (5) is arranged at the top of the spray tower body (1), the evaporation tank (8) is arranged at one side of the spray tower body (1), a water inlet of the evaporation tank (8) is fixedly connected with a water outlet of the spray tower body (1) through a first pipeline, a heater (9) is arranged in the evaporation tank (8), a sewage discharge outlet is arranged at the bottom of the evaporation tank (8), a first steam outlet is formed in the top of the evaporation tank (8), and the first steam outlet of the evaporation tank (8) is fixedly connected with the air cooler (10) through a second pipeline, air cooler (10) and feeding tank (11) are through third pipeline fixed connection, the top of feeding tank (11) is provided with dog-house (14), one side of feeding tank (11) is provided with delivery pump (15), feeding tank (11) and delivery pump (15) are through fourth pipeline fixed connection, fixedly connected with feed liquor is responsible for (7) on delivery pump (15).

2. The circulating spray tower for polyaluminum ferric chloride according to claim 1, wherein the air inlet pipe (4) is transversely arranged, and the air inlet pipe (4) penetrates through the spray tower body (1) and is fixedly connected with the spray tower body (1) in a sealing manner.

3. The circulating spray tower for polyaluminum ferric chloride of claim 1, wherein the water outlet of the spray tower body (1) is opened at a position close to the bottom of the spray tower body (1), and the water outlet of the spray tower body (1) is positioned below the air inlet pipe (4).

4. The circulating spray tower for polyaluminum ferric chloride of claim 1, wherein a second steam outlet is opened on the top of the feeding tank (11), a gas return pipe (13) is fixedly connected to the second steam outlet, and the gas return pipe (13) is fixedly connected to the evaporating tank (8).

5. A circulating spray tower for polyaluminium chloride according to claim 1 wherein an agitator (12) is provided in the feed tank (11).

6. The circulating spray tower for polyaluminum ferric chloride according to claim 1, wherein a plurality of liquid inlet branch pipes (16) are fixedly connected to the liquid inlet main pipe (7), the liquid inlet branch pipes (16) are communicated with the inside of the liquid inlet main pipe (7), the liquid inlet branch pipes (16) penetrate through the spray tower body (1) and extend into the spray tower body (1), a spray disc (6) is fixedly connected to one end of each liquid inlet branch pipe (16), and a plurality of water outlet holes are formed in the bottom of the spray disc (6).

7. The circulating spray tower for polyaluminum ferric chloride of claim 6, characterized in that the inside of the spray tower body (1) is provided with a plurality of layers of porous plates (2), the top of the porous plates (2) is provided with a packing layer (3), and the spray disc (6) is arranged above the packing layer (3).