CN216799825U - Reaction device for preparing flocculant from steel pickling waste liquid - Google Patents

Abstract

The utility model discloses a reaction device for preparing a flocculating agent from steel pickling waste liquid, wherein a first mixing device and a second mixing device are arranged in a kettle body, the first mixing device comprises a stirring shaft, the lower part of the stirring shaft is provided with a stirring rod, the stirring shaft is in transmission connection with a driving motor through a rotary joint, the rotary joint is provided with an oxygen inlet, the stirring shaft is internally provided with an oxygen channel communicated with the oxygen inlet, the stirring rod is provided with a first cavity communicated with the oxygen channel and a first through hole communicated with the first cavity, the second mixing device comprises a dispersing device and a gathering device, the dispersing device is fixedly connected with the stirring shaft and is provided with a second cavity communicated with the oxygen channel and a second through hole communicated with the second cavity, the gathering device is connected with the inner wall of the kettle body, and the gathering device is provided with a third cavity communicated with the oxygen channel and a third through hole communicated with the third cavity. In the stirring and mixing process, oxygen can be directly sprayed out from the second through hole and the third through hole of the first through hole, so that the gas-liquid mixing effect can be further improved.

Description

Reaction device for preparing flocculant from steel pickling waste liquid

Technical Field

The utility model relates to the technical field of waste liquid treatment, in particular to a reaction device for preparing a flocculating agent from steel pickling waste liquid.

Background

In the processing process of iron products, hydrochloric acid is often used for pickling and derusting the surfaces of the iron products, so that a large amount of pickling waste acid containing ferric chloride, ferrous chloride and hydrochloric acid is generated. How to effectively treat and dispose the waste acid is always a concern of an environmental protection department, and many medium and small enterprises consider the problems of production cost and the like, most adopt the method of simply neutralizing and then discharging the waste acid into water, so that the serious pollution of underground water and soil is caused, which is unreasonable and illegal.

At present, the treatment methods adopted at home and abroad mainly comprise a roasting-absorption method, a solvent extraction method and a chlorine gas oxidation method. The former two methods mainly recover hydrochloric acid and iron-containing materials (such as Fe2O3 powder) in the pickling waste acid, and the latter method utilizes the waste acid to prepare FeCl3, however, the conventional preparation method needs chlorine as an oxidant, and has the problems of high equipment investment, unsafe production and secondary pollution, so that the application of the method is limited. Therefore, a new utilization method of the steel pickling waste acid needs to be developed, and the main components in the waste acid are effectively and safely utilized: ferrous ions, ferric ions and free hydrochloric acid, and solves the problem that waste acid pollutes the environment in the ironware processing industry.

The production of the poly-ferric chloride water purifying agent by using the steel hydrochloric acid pickling waste liquid is a good resource utilization mode of hazardous wastes, and an oxidant process or a catalytic oxidation method is generally adopted at present, namely, the steel hydrochloric acid pickling waste liquid and oxygen are subjected to gas-liquid mixing in a reaction kettle to carry out oxidation reaction so as to purify the waste liquid. The technology has the advantages of mild reaction conditions, wide product application, no three-waste burden and suitability for popularization in small and medium-sized enterprises. But the problem of low reaction rate is mainly caused by poor gas-liquid mixing effect of the existing reaction device.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a reaction device for preparing a flocculating agent from steel pickling waste liquid aiming at the defects of the prior art.

In order to solve the problems, the technical scheme adopted by the utility model is as follows:

a reaction device for preparing a flocculating agent from steel pickling waste liquid comprises a kettle body, wherein a discharge hole is formed in the bottom of the kettle body, a feed inlet and a driving motor are arranged at the top of the kettle body, a first mixing device and a second mixing device are arranged inside the kettle body, the first mixing device comprises a stirring shaft, a stirring rod is arranged on the lower portion of the stirring shaft, the stirring shaft is in transmission connection with the driving motor through a rotary joint, an oxygen inlet is formed in the rotary joint, an oxygen channel is formed in the stirring shaft and is communicated with the oxygen inlet through the rotary joint, a first cavity communicated with the oxygen channel is formed in the stirring rod, a plurality of first through holes communicated with the first cavity are uniformly formed in the stirring rod, the second mixing device comprises a dispersing device and a gathering device, the dispersing device is fixedly connected with the stirring shaft and is in an inverted funnel shape, the second cavity that communicates with the oxygen passageway has been seted up in the dispersion devices, a plurality of second through-holes that communicate with the second cavity have evenly been seted up on the dispersion devices, gather together device and cauldron internal wall connection, it is hourglass hopper-shaped to gather together the device, set up the third cavity with the oxygen passageway intercommunication in the device of gathering together, evenly set up a plurality of third through-holes that communicate with the third cavity on the device of gathering together.

The further technical proposal is that a dispersing rod is arranged on the stirring shaft corresponding to the opening at the lower end of the gathering device.

The further technical proposal is that the outer side of the kettle body is provided with a jacket.

The still further technical scheme is that the discharge port is connected with a circulating pipe, the other end of the circulating pipe is connected with a circulating port at the top of the kettle body, and a circulating pump is arranged on the circulating pipe.

Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: at internal portion of cauldron be equipped with first mixing arrangement and second mixing arrangement, the mixing arrangement of two kinds of differences can improve the gas-liquid mixture effect to at the in-process that the stirring was mixed, oxygen can be followed first mixing arrangement's first through-hole and second mixing arrangement's second through-hole and the direct blowout of third through-hole, can make further improvement gas-liquid mixture effect, has guaranteed reaction rate. Set up the circulating pipe in discharge gate department, can make the waste liquid of cauldron body bottom get into the cauldron internal portion from cauldron body top once more, the cooperation of rethread first mixing arrangement and second mixing arrangement for the waste liquid can with oxygen intensive mixing.

Drawings

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

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is an enlarged view of portion B of FIG. 1;

fig. 4 is an enlarged view of a portion C in fig. 1.

In the figure: 1. a kettle body; 2. a discharge port; 3. a feed inlet; 4. a drive motor; 5. a stirring shaft; 6. a stirring rod; 7. a rotary joint; 8. an oxygen inlet; 9. an oxygen channel; 10. a first cavity; 11. a dispersing device; 12. a gathering device; 13. a second cavity; 14. a second through hole; 15. a third cavity; 16. a third through hole; 17. a dispersion rod; 18. a jacket; 19. a circulation pipe; 20. a circulation port; 21. a circulation pump; 22. a dispersion device holder; 23. a gathering device support; 24. a first via.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1-4, a reaction apparatus for preparing a flocculant from a steel pickling waste liquid comprises a kettle body 1, a jacket 18 is arranged on the outer side of the kettle body 1, a discharge port 2 is arranged at the bottom of the kettle body 1, a feed port 3 and a driving motor 4 are arranged at the top of the kettle body 1, a first mixing device and a second mixing device are arranged inside the kettle body 1, the first mixing device comprises a stirring shaft 5, a stirring rod 6 is arranged at the lower part of the stirring shaft 5, the stirring shaft 5 is in transmission connection with the driving motor 4 through a rotary joint 7, an oxygen inlet 8 is arranged on the rotary joint 7, an oxygen channel 9 is arranged in the stirring shaft 5, the oxygen channel 9 is communicated with the oxygen inlet 8 through the rotary joint 7, a first cavity 10 communicated with the oxygen channel 9 is arranged in the stirring rod 6, a plurality of first through holes 24 communicated with the first cavity 10 are uniformly arranged on the stirring rod 6, the second mixing arrangement includes dispersion devices 11 and gathers together device 12, dispersion devices 11 and (mixing) shaft 5 fixed connection are invertedly and leak hopper-shaped, set up the second cavity 13 with oxygen passageway 9 intercommunication in the dispersion devices 11, evenly set up a plurality of second through-holes 14 with second cavity 13 intercommunication on the dispersion devices 11, gather together device 12 and 1 inner wall connection of the cauldron body, it is hourglass hopper-shaped to gather together device 12, it sets up third cavity 15 with oxygen passageway 9 intercommunication in the device 12 to gather together, it evenly sets up a plurality of third through-holes 16 with third cavity 15 intercommunication on the device 12 to gather together.

Preferably, a dispersing rod 17 is arranged on the stirring shaft 5 corresponding to the opening at the lower end of the gathering device 12. The dispersion rod 17 stirs once more pickling waste liquid and oxygen and mixes, falls into the bottom of the cauldron body 1 after dispersion and gathering together, and rethread puddler 6 continues to stir and mixes for the gas-liquid mixture effect is better.

The discharging port 2 is connected with a circulating pipe 19, the other end of the circulating pipe 19 is connected with a circulating port 20 at the top of the kettle body 1, the circulating port 20 and the feeding port 3 are both positioned above the dispersing device 11, and a circulating pump 21 is arranged on the circulating pipe 19.

A dispersing device bracket 22 is arranged between the dispersing device 11 and the stirring shaft 5 and is used for better fixing the dispersing device 11. A gathering device bracket 23 is arranged between the gathering device 12 and the inner wall of the kettle body 1 and used for better fixing the gathering device 12.

The working principle is as follows: the waste liquid gets into the cauldron body 1 from feed inlet 3, oxygen gets into the cauldron internal portion from oxygen import 8 through first through-hole 24, second through-hole 14 and third through-hole 16, the waste liquid that gets into from feed inlet 3 firstly flows to gathering device 12 along dispersion devices 11, lower extreme opening through gathering device 12 falls into cauldron body 1 lower part, when 11 with gathering device 12 at the flow of circulation, oxygen mixes with the waste liquid through second through-hole 14 and third through-hole 16, when gathering device 12's lower extreme opening at the flow of circulation, dispersion bar 17 once stirs mixture pickling waste liquid and oxygen again, make the gas-liquid mixture effect better, the waste liquid of cauldron body 1 bottom is when being stirred by puddler 6, oxygen mixes with the waste liquid through first through-hole 24. Set up circulating pipe 19 in discharge gate 2 department, can make the waste liquid of the 1 bottom of the cauldron body get into the cauldron body 1 inside from the 1 top of the cauldron body once more, the cooperation of rethread first mixing arrangement and second mixing arrangement for the waste liquid can with oxygen intensive mixing.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (4)

1. The reaction device for preparing the flocculant from the steel pickling waste liquid is characterized in that: comprises a kettle body (1), wherein a discharge hole (2) is formed in the bottom of the kettle body (1), a feed inlet (3) and a driving motor (4) are formed in the top of the kettle body (1), a first mixing device and a second mixing device are arranged in the kettle body (1), the first mixing device comprises a stirring shaft (5), a stirring rod (6) is arranged on the lower portion of the stirring shaft (5), the stirring shaft (5) is in transmission connection with the driving motor (4) through a rotary joint (7), an oxygen inlet (8) is formed in the rotary joint (7), an oxygen channel (9) is formed in the stirring shaft (5), the oxygen channel (9) is communicated with the oxygen inlet (8) through the rotary joint (7), a first cavity (10) communicated with the oxygen channel (9) is formed in the stirring rod (6), a plurality of first through holes (24) communicated with the first cavity (10) are uniformly formed in the stirring rod (6), the second mixing arrangement includes dispersion devices (11) and gathers together device (12), dispersion devices (11) and (mixing) shaft (5) fixed connection are invertedly and leak hopper-shaped, second cavity (13) with oxygen passageway (9) intercommunication have been seted up in dispersion devices (11), evenly set up second through-hole (14) a plurality of and second cavity (13) intercommunication on dispersion devices (11), gather together device (12) and cauldron body (1) inner wall connection, it is hourglass hopper-shaped to gather together device (12), it has third cavity (15) with oxygen passageway (9) intercommunication to set up in device (12), gather together evenly set up third through-hole (16) a plurality of and third cavity (15) intercommunication on device (12).

2. The reaction device for preparing the flocculant from the steel pickling waste liquid according to claim 1, characterized in that: and a dispersing rod (17) is arranged on the stirring shaft (5) corresponding to the opening at the lower end of the gathering device (12).

3. The reaction device for preparing the flocculant from the steel pickling waste liquid according to claim 1, characterized in that: the outer side of the kettle body (1) is provided with a jacket (18).

4. The reaction device for preparing the flocculant from the steel pickling waste liquid according to claim 1, characterized in that: the discharging port (2) is connected with a circulating pipe (19), the other end of the circulating pipe (19) is connected with a circulating port (20) at the top of the kettle body (1), and a circulating pump (21) is arranged on the circulating pipe (19).

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