CN215783383U

CN215783383U - Slurry reaction kettle

Info

Publication number: CN215783383U
Application number: CN202121505435.3U
Authority: CN
Inventors: 陆永生; 刘强; 张国卿; 应超军; 赵军
Original assignee: Climber Shanghai Environ Tech Co ltd; University of Shanghai for Science and Technology
Current assignee: Climber Shanghai Environ Tech Co ltd; University of Shanghai for Science and Technology
Priority date: 2021-07-02
Filing date: 2021-07-02
Publication date: 2022-02-11
Anticipated expiration: 2031-07-02

Abstract

The utility model relates to a slurry reaction kettle which comprises a tank body which is vertically arranged, wherein a feed inlet for feeding aluminum ash and a water distribution port for injecting water are arranged on the tank body; a discharge hole for discharging the reacted materials is formed in the bottom of the tank body; a stirring component for stirring the water and the aluminum ash in the tank body is arranged in the tank body; the stirring assembly comprises a main stirring paddle and an auxiliary stirring paddle, wherein the axes of the main stirring paddle and the auxiliary stirring paddle are arranged in parallel, and the axial direction of the main stirring paddle is consistent with the tank depth direction of the tank body; the rotary outer contour of the lower end of the main stirring paddle is larger than that of the upper end of the main stirring paddle, and the rotary outer contour of the lower end of the main stirring paddle invades below the auxiliary stirring paddle. By adopting the scheme, the secondary aluminum ash can react with water more fully.

Description

Slurry reaction kettle

Technical Field

The utility model relates to the field of environment-friendly equipment, in particular to a slurry reaction kettle.

Background

The aluminum ash is scum floating on the aluminum liquid of the electrolytic bath generated in the aluminum electrolysis process. The aluminum ash is mainly divided into primary aluminum ash (white ash) and secondary aluminum ash (black ash). According to the national records of hazardous waste (2016) regulations: four waste residues, namely waste residue generated by maintenance and waste of an electrolytic cell in the aluminum electrolysis process, primary smelting slag generated in the aluminum pyrometallurgical process, salt slag and scum generated in the aluminum electrolysis process and inflammable skimming generated in the aluminum pyrometallurgical process, belong to HW48 non-ferrous metal smelting waste. Therefore, the recovery and utilization of the aluminum ash have important significance on environmental protection, efficient utilization of resources and economic sustainable development.

The secondary aluminum ash is the residue of primary aluminum ash or other waste aluminum after metal aluminum is extracted by a physical method or a chemical method, the content of metal aluminum is low, the components are relatively complex, and the secondary aluminum ash mainly comprises a small amount of aluminum (the content is less than 10 wt%), a salt flux (more than 10%), an oxide and aluminum nitride (the content is 15-30 wt%). The content of aluminum nitride in the secondary aluminum ash is 15-30%, ammonia gas can be decomposed and released in a humid environment, the environment is polluted, and the aluminum nitride is a substance with higher utilization value in the secondary aluminum ash. The salt and the aluminum nitride in the secondary aluminum ash are both available resources, and if the salt and the aluminum nitride are not recycled, the resource waste is caused, and the environment is polluted.

In the prior art, the treatment method of the secondary aluminum ash is usually desalination denitrification, but in the aspect of denitrification treatment of the secondary aluminum ash, because aluminum nitride reacts with water to generate an aluminum hydroxide layer or an aluminum oxide hydrate layer, and further coats the surface of the aluminum nitride, the reaction is incomplete, and the denitrification effect is poor.

Therefore, a treatment apparatus having a good denitrification effect is required for recycling the secondary aluminum ash.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a slurry reaction kettle, which can enable secondary aluminum ash to react with water more fully.

The technical scheme adopted by the utility model is as follows.

A slurry reaction kettle comprises a tank body which is vertically arranged, wherein a feed inlet for feeding aluminum ash and a water distribution port for injecting water are arranged on the tank body; a discharge hole for discharging the reacted materials is formed in the bottom of the tank body; a stirring component for stirring the water and the aluminum ash in the tank body is arranged in the tank body; the stirring assembly comprises a main stirring paddle and an auxiliary stirring paddle, wherein the axes of the main stirring paddle and the auxiliary stirring paddle are arranged in parallel, and the axial direction of the main stirring paddle is consistent with the tank depth direction of the tank body; the rotary outer contour of the lower end of the main stirring paddle is larger than that of the upper end of the main stirring paddle, and the rotary outer contour of the lower end of the main stirring paddle invades below the auxiliary stirring paddle.

Preferably, the main stirring paddle is arranged in the center of the tank body, the main stirring paddle consists of a main stirring shaft, a first stirring blade and a second stirring blade, the first stirring blade and the second stirring blade are sequentially arranged along the axial direction of the main stirring shaft, the first stirring blade is arranged at the upper part of the main stirring shaft, the second stirring blade is arranged at the lower end part of the main stirring shaft, and the rotary outer contour of the second stirring blade is larger than that of the first stirring blade; the auxiliary stirring paddle is arranged along the circumferential direction of the main stirring paddle and consists of an auxiliary stirring shaft and auxiliary stirring blades which are sequentially arranged along the axial direction of the auxiliary stirring shaft, and the rotary outer contour of the second stirring blade extends to the inside of the rotary outer contour of the auxiliary stirring blade along the radial direction.

Preferably, the feed inlet is arranged on the side wall of the tank body, and the orientation of the feed inlet is tangential to the side wall of the tank body at the feed inlet.

Preferably, the tank body is formed by connecting a cylindrical tank body part and a conical tank body part which are correspondingly arranged up and down, the first stirring blades are distributed in the cylindrical tank body part, and the second stirring blades are arranged in the conical tank body part; the auxiliary stirring paddle is positioned in the cylindrical tank body part.

Preferably, each auxiliary stirring blade on the same auxiliary stirring blade is arranged corresponding to the interval area of every two adjacent main stirring blades on the main stirring blade.

Preferably, the main stirring blade and the sub-stirring blade are each formed of a helical blade.

Preferably, the main stirring paddle is provided with one, the auxiliary stirring paddles are provided with two, and the two auxiliary stirring paddles are arranged at equal intervals along the circumferential direction of the main stirring paddle.

Preferably, the discharge port is provided with a discharge valve (30) for adjusting the opening of the discharge port.

Preferably, the upper part of the tank body is also provided with an exhaust port for exhausting gas in the tank body, and the exhaust port is externally connected with an exhaust gas treatment device capable of performing harmless treatment on the gas.

Preferably, the feed inlet is arranged at the upper part of the cylindrical tank body part, the water distribution port is arranged at the top of the tank body, and the discharge port is arranged at the lowest position of the bottom of the conical tank body part.

The utility model has the technical effects that:

(1) according to the slurry reaction kettle, aluminum ash materials are put into the tank body through the feeding hole formed in the tank body, water is injected into the tank body through the water distribution hole formed in the tank body, and the water and the aluminum ash materials are stirred through the stirring assembly arranged in the tank body, so that the aluminum ash and the water are uniformly mixed, the full reaction of the aluminum ash and the water is promoted, and the denitrification effect is improved; through setting up the gyration outline with main stirring rake lower extreme into being greater than the gyration outline of main stirring rake upper end to arrange the axis that the gyration outline of main stirring rake lower extreme is close vice stirring rake, can fill the vacancy area between vice stirring rake lower extreme and the conical tank body portion, prevent that the material from deposiing in this area, and reach the purpose that carries out intensive mixing to the sedimentary material of tank body bottom, thereby make this reation kettle have the effect of intensive mixing material and even compounding.

(2) Through arranging main stirring rake at jar body central authorities, arrange vice stirring rake along the circumferencial direction of the jar body, the gyration profile of the second stirring leaf on the main stirring rake is greater than the outline of first stirring leaf, can implement stirring and grinding to the material between the upper end of main stirring rake and the vice stirring rake, make the material reaction more abundant, and the gyration outline of second stirring leaf is close the axis of vice (mixing) shaft and arranges, can prevent that the material from the regional deposit of interval between jar body portion and the vice stirring rake, utilize the second stirring leaf to implement unified stirring to the material of jar body bottom, make the material of jar body bottom can fully and evenly mixed with water, can also prevent to appear because of the material is at the internal deposit of jar and the unable circumstances of discharging.

(3) The feeding hole is formed in the side wall of the cylindrical tank body and is arranged in a tangent mode with the side wall of the tank body, so that tangential feeding can be achieved, materials can avoid the main stirring paddle and the auxiliary stirring paddle and can quickly reach the bottom of the tank, and then the materials are mixed under the stirring of the main stirring paddle and the auxiliary stirring paddle, and the material mixing efficiency and the slurry reaction efficiency are improved; still do benefit to the aluminium ash material and disperse evenly in the jar body, prevent that the material from piling up at the part, and then improve the homogeneity that the water material mixes to it is more abundant to make the reaction.

(4) The tank body is arranged to be of a structure with a circular upper part and a conical lower part, so that materials can be gathered to the discharge hole conveniently; arrange first stirring leaf and vice stirring rake in cylindrical tank body portion, can utilize the interact of first stirring leaf and vice stirring leaf to implement the stirring, grind the material, through arranging the second stirring leaf correspondence in conical tank body portion, and the gyration profile of second stirring leaf radially extends to within the gyration profile of vice stirring leaf to ensure that the second stirring leaf can unify the even stirring of thick liquids in the conical tank body portion at the during operation, and when implementing row material, can promote the material after the reaction and discharge smoothly.

(5) The interval region of each vice stirring leaf with same vice stirring rake and adjacent main stirring leaf corresponds arranges, is favorable to making the thick liquids stirring more even, grinds the thick liquids that are in between the adjacent main stirring leaf, between the adjacent vice stirring leaf moreover more abundant to improve thick liquids reaction effect, make the reaction of aluminium ash material and water more abundant.

(6) Spiral blades are arranged on the main stirring blades and the auxiliary stirring blades, so that the materials can be pushed downwards to facilitate discharging when the materials are reliably stirred and ground.

(7) Set up main stirring rake into one, and two vice stirring rakes of equidistant arrangement in the circumference of main stirring rake, can reserve more spaces that can be used for holding water, material on the basis of guaranteeing even stirring grinding thick liquids.

(8) The opening size of the discharge port is adjusted by arranging the discharge valve at the discharge port, so that the discharge speed can be adjusted, the residence time of the material in the tank body is adjusted, and the purpose of adjusting the time of the material participating in the reaction in the tank body is achieved.

(9) When materials such as aluminum ash and the like react with water in the tank body, gas is usually generated, and the generated gas can be discharged in time by arranging the exhaust port, so that the stable slurry reaction in the tank body is ensured; the exhaust port is connected with the waste gas treatment device, so that harmless treatment of gas is realized, and the environment is protected.

(10) Through setting up the feed inlet on the upper portion of cylindrical tank body portion, can increase the whereabouts time of material at the internal of jar, thereby make the material participate in with the relatively loose state with the stirring of water and mix, make the stirring more even, through setting up the mouth of a river at jar body top, can wash away the material that is detained on main stirring rake and the vice stirring rake at watered in-process, and participate in the stirring with the aluminium ash material relatively fast and mix, thereby improve the efficiency of compounding and reaction, set up the discharge gate at the lower of conical tank body portion, the material after can conveniently reacting gathers and discharges to discharge gate department, thereby improve row material efficiency.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a front view of a slurry reactor according to one embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is a left side view of fig. 1.

The corresponding relation of all the reference numbers is as follows:

10-tank body, 11-cylindrical tank body, 12-conical tank body, 13-feeding hole, 14-water distribution port, 15-exhaust port, 16-discharge hole, 20-stirring component, 21-main stirring paddle, 211-main stirring shaft, 212-first stirring blade, 213-second stirring blade, 22-auxiliary stirring paddle, 221-auxiliary stirring shaft, 222-auxiliary stirring blade, 30-discharge valve and 40-motor.

Detailed Description

In order that the objects and advantages of the present application will become more apparent, the present application will be described in detail with reference to the following examples. It is understood that the following text is intended only to describe one or several particular embodiments of the application and does not strictly limit the scope of the claims which are specifically claimed herein, and that the examples and features of the examples in this application may be combined with one another without conflict.

At present, in the aspect of secondary aluminum ash treatment, the denitrification effect is poor, and the main reason is that aluminum nitride components in the secondary aluminum ash can generate aluminum hydroxide or hydrated alumina in the reaction process with water, so that a coating layer is formed to coat the outer surface of the aluminum nitride which is not reacted with the water, further reaction of the aluminum nitride and the water is hindered, and the reaction is insufficient. If the aluminum nitride can not fully react with water, the aluminum nitride is not beneficial to recycling and can pollute the environment. Therefore, it is necessary to improve the existing equipment so that the secondary aluminum ash is fully reacted.

Referring to fig. 1 to 3, the present embodiment provides a slurry reactor, which includes a tank 10 arranged vertically, a lid is installed on the top of the tank 10, and a water distribution port 14 for water injection is provided on the lid. The tank body 10 is formed by connecting a cylindrical tank body part 11 and a conical tank body part 12 which are correspondingly arranged up and down, a feeding hole 13 for feeding aluminum ash is formed in the upper part of the cylindrical tank body part 11, and a discharging hole 16 for discharging materials after reaction is formed in the lowest position of the bottom of the conical tank body part 12; a stirring component 20 for stirring the water and the aluminum ash in the tank body 10 is arranged in the tank body 10; the stirring assembly 20 comprises a main stirring paddle 21 and auxiliary stirring paddles 22 which are arranged at intervals along the rotation direction of the main stirring paddle 21, the main stirring paddle 21 is arranged at the center of the tank body 10, and the axial direction of the main stirring paddle 21 is consistent with the tank depth direction of the tank body 10; the main stirring shaft extends into the conical tank body 12 from the cylindrical tank body 11, and the auxiliary stirring paddle is arranged in the cylindrical tank body 11; the rotary outer contour of the lower end of the main stirring paddle 21 is larger than the rotary outer contour of the upper end of the main stirring paddle 21, and the rotary outer contour of the lower end of the main stirring paddle 21 is close to the axis of the auxiliary stirring paddle. Wherein the aluminum ash is secondary aluminum ash; the revolving outer contour of the lower end of the main stirring paddle 21, namely the outer contour of the paddle body of the main stirring paddle 21 in the conical tank body part 12 during revolving; the revolving outer contour of the upper end of the main stirring paddle 21, namely the outer contour of the paddle body of the main stirring paddle 21 in the cylindrical tank body part 11 during revolving.

According to the slurry reaction kettle provided by the embodiment, the feed inlet is formed in the tank body and used for feeding secondary aluminum ash materials, the water distribution port is formed in the upper portion of the tank body and used for injecting water into the tank body, and the stirring assembly is arranged in the tank body and used for stirring water and the secondary aluminum ash materials, so that the secondary aluminum ash and the water are uniformly mixed, the full reaction of the secondary aluminum ash and the water is facilitated, and the denitrification effect is improved; the rotary outer contour of the lower end of the main stirring paddle is set to be larger than the rotary outer contour of the upper end of the main stirring paddle, the rotary outer contour of the lower end of the main stirring paddle is close to the axis of the auxiliary stirring paddle, the vacant area formed between the lower end of the auxiliary stirring paddle and the conical tank body can be filled, the materials can be prevented from being deposited in the vacant area, and the effects of fully stirring the materials and uniformly mixing the materials are achieved.

The main stirring paddle 21 consists of a main stirring shaft 211 and main stirring blades which are arranged at intervals along the axial direction of the main stirring shaft 211; the main stirring blade is divided into a first stirring blade 212 and a second stirring blade 213, the first stirring blade 212 is distributed in the cylindrical tank body part 11, the second stirring blade 213 is arranged in the conical tank body part 10, and the lower end of the auxiliary stirring paddle 22 is positioned above the second stirring blade 213; the rotating outer contour of the second stirring blade 213 is larger than that of the first stirring blade 212, and the second stirring blade 213 fills the gap of the auxiliary stirring paddle in the conical tank body 12, so that the materials in the conical tank body 12 are fully stirred and mixed. And the second agitating blade 213 is disposed separately from the inner sidewall of the conical tank portion 10.

The main stirring blade can also be a spiral blade which is integrally formed along the axial direction of the main stirring shaft.

The feed opening 13 is provided on the upper end side wall of the cylindrical tank portion 11, and the feed opening 13 is oriented tangentially to the side wall of the tank 10 at the feed opening 13. The feeding port 13 is used for feeding/conveying the secondary aluminum ash material into the tank body 10. By adopting the embodiment, the tangential feeding of the secondary aluminum ash can be realized, so that the materials can avoid the main stirring paddle 21 and the auxiliary stirring paddle 22 and quickly reach the bottom of the tank, and then are mixed under the stirring of the main stirring paddle 21 and the auxiliary stirring paddle 22, and further the mixing efficiency and the slurry reaction efficiency are improved; still do benefit to the aluminium ash material and disperse evenly in the jar body, prevent that the material from piling up at the part, and then improve the homogeneity that the water material mixes to it is more abundant to make the reaction.

Further, the position of the feed port 13 is preferably set to avoid the sub-paddles 22, and the side where the sub-paddles 22 are not installed is used for feeding.

The auxiliary stirring paddle 22 consists of an auxiliary stirring shaft 221 and auxiliary stirring blades 222, the auxiliary stirring blades 222 are sequentially arranged along the axial direction of the auxiliary stirring shaft 221, and the axial direction of the auxiliary stirring shaft 221 is parallel to the axial direction of the main stirring shaft 211; the upper end of the main stirring shaft 211 and the upper end of the auxiliary stirring shaft 221 penetrate through the cover respectively and are in rotary fit with the cover, and the upper end of the main stirring shaft 211 and the upper end of the auxiliary stirring shaft 221 are in transmission connection through a transmission assembly. The transmission assembly may be a belt transmission assembly or a chain transmission assembly or a gear transmission assembly, and is disposed above the cover to prevent water and materials from interfering with the transmission assembly. The motor 40 is arranged above the cover, and the motor drives the main stirring paddle 21 and the auxiliary stirring paddle 22 to rotate through the transmission assembly, so that the materials in the tank body 10 are stirred and ground.

Each auxiliary stirring blade 222 on the same auxiliary stirring paddle 22 is arranged corresponding to the interval area of every two adjacent main stirring blades on the main stirring paddle 21. So be favorable to making the thick liquids stirring more even, grind more fully to being in between the adjacent main stirring leaf, the thick liquids between the adjacent vice stirring leaf 222 moreover to improve thick liquids reaction effect, make the reaction of secondary aluminium ash and water more abundant.

Through the mutual matching of the main stirring paddle 21 and the auxiliary stirring paddle 22, the water and the secondary aluminum ash material in the tank body 10 can be stirred and mixed, and the material between the main stirring paddle 21 and the auxiliary stirring paddle 22 is ground, so that the slurry is more fully reacted; through being connected main (mixing) shaft 211 with vice (mixing) shaft 221 through the transmission of drive assembly transmission, can realize main stirring rake and vice stirring rake simultaneous movement, and then improve stirring efficiency.

The main stirring vanes and the auxiliary stirring vanes 222 are each formed of a helical blade, and the helical direction of the main stirring vanes coincides with the helical direction of the auxiliary stirring vanes 222. The size of the first stirring blade 212 in the main stirring blade, that is, the main stirring blade correspondingly disposed in the cylindrical tank body 11, may be set to be the same as the size of the auxiliary stirring blade 222, so as to ensure the stress balance between the main stirring blade and the auxiliary stirring blade 222 during the stirring operation, and also perform the function of uniformly dispersing the material.

The main stirring paddle 21 and the auxiliary stirring paddle 22 may be respectively composed of a main screw and an auxiliary screw, the screw teeth on the main screw extend along the radial direction to form a spiral blade, and the radial dimension of the screw teeth portion correspondingly arranged in the conical tank body portion 12 on the main screw is larger than that of the other screw teeth portion, so as to constitute the second stirring blade 212 or a stirring structure having the same function as the second stirring blade 212. The screw teeth on the auxiliary screw rod extend along the radial direction to form a spiral blade. In the embodiment, the main stirring vanes and the auxiliary stirring vanes are continuous helical vanes, and when the helical rotation direction and the rotation direction of the main stirring vanes and the auxiliary stirring vanes are consistent, the stirring and grinding of the material can be better realized. The main stirring paddle 21 and the auxiliary stirring paddle 22 can be switched between the stirring mode and the discharging mode by starting the motor 40 and adjusting the opening and closing state of the discharging port 16. In the stirring mode, the discharge port 16 is closed, the main stirring paddle 21 and the auxiliary stirring paddle 22 can stir the materials at the bottom of the tank body 10, and particularly the second stirring blade on the main stirring paddle 21 can uniformly stir the slurry at the bottom in the tank body 10, so that the materials are uniformly mixed; in the discharging mode, the discharging port 16 is opened, and the main stirring paddle 21 can gradually push the material downwards, so that the material is smoothly discharged from the discharging port 16.

The main stirring paddle 21 and the auxiliary stirring paddle 22 can have the same rotation direction in the working state, and the middle main stirring paddle 21 has the stirring function and also has the function of pushing materials downwards; the two sub paddles 22 located at both sides of the main paddle mainly function to stir and grind the slurry.

The main stirring paddle 21 has a function of stirring and grinding as well as a function of pushing the material downward, like the sub-stirring paddle 22, and therefore, the main stirring shaft is generally made slightly thicker in consideration of the factors such as mechanical strength.

The main stirring paddle 21 is provided with one, the auxiliary stirring paddles 22 are provided with two, and the two auxiliary stirring paddles 22 are arranged at equal intervals along the circumferential direction of the main stirring paddle 21. More spaces for containing water, materials and exhausting gas can be reserved on the basis of ensuring uniform stirring of the slurry.

The discharge port 16 is provided with a discharge valve 30 for adjusting the opening of the discharge port 16. The opening size of the discharge port is adjusted by arranging the discharge valve at the discharge port, so that the discharge speed can be adjusted, the residence time of the material in the tank body is adjusted, and the purpose of adjusting the time of the material participating in the reaction in the tank body is achieved.

During the reaction process of the secondary aluminum ash with water, gases such as ammonia gas and hydrogen gas are usually generated, particularly, the ammonia gas needs to be subjected to harmless treatment to be discharged, otherwise, the air can be polluted. On the contrary, the upper part of the tank body 10 is further provided with an exhaust port 15 for exhausting gas generated by slurry reaction in the tank body 10, and the exhaust port 15 is externally connected with an exhaust gas treatment device capable of performing innocent treatment on the gas so as to treat harmful gas in the gas exhausted from the exhaust port and meet the requirement of environmental protection and emission.

Above-mentioned thick liquids reation kettle can prepare the thick liquids of certain concentration according to the feeding condition, specifically is: the solid material feeding amount and the water inflow are controlled to be matched, the solid material amount can be estimated through the conveying speed, and the corresponding water inflow is determined according to the water-material ratio. Wherein, the material conveying speed is cooperatively controlled by the rotating speed of the main screw and the discharge valve 30, a flow meter can be arranged at the water inlet to monitor the water inflow, and the powder is weighed and then added.

If the slurry is fed in an intermittent feeding mode, the water quantity and the powder quantity are measured once during intermittent operation, the rotating speed of the main screw is controlled to be responsible for conveying after the reaction is finished, and the opening degree of the discharge port 16 is adjusted to control the discharge speed.

If the feeding of the slurry is continuously operated, the water inlet is monitored and controlled by a flow meter, the powder is weighed and then fed by a conveying belt or a hopper, the rotating speed of the main screw is controlled to be responsible for conveying, and the discharging speed is controlled by adjusting the opening of the valve. The opening of the discharge port 16 can be adjusted manually or mechanically or electrically.

In the aspect of regulating and controlling the reaction time of the slurry, the discharge valve 30 is used for regulating the opening of the discharge hole 16 to control the discharge speed, namely, the residence time of the slurry in the reaction kettle. The auxiliary stirring paddle 22 mainly plays a role in stirring and grinding; the main stirring paddle 21 has the functions of stirring, grinding and propelling feeding, and the rotating speed of the main stirring paddle influences the reaction time. The opening of the discharge port 16 mainly controls the discharge amount, and the reaction time is long when the discharge amount is small and short when the discharge amount is large. The regulation and control of the slurry reaction time are achieved through the synergistic effect of the regulation of the opening degree of the discharge port 16 and the regulation of the rotating speed of the main stirring paddle 21.

The slurry reaction kettle provided by the embodiment is mainly applied to harmless treatment of solid hazardous wastes which can release gas when reacting with water, wherein the solid wastes include but are not limited to aluminum ash. The reaction kettle can also be suitable for other slurry which does not generate gas and is accompanied with dust, and the gas collecting port can be used for collecting the generated dust in the reaction process. If the waste gas and the dust are not available, the device can be used as a safety measure. Therefore, the reaction kettle can be suitable for the reaction of more slurry.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention. Structures, devices, and methods of operation not specifically described or illustrated herein are generally practiced in the art without specific recitation or limitation.

Claims

1. A slurry reaction kettle is characterized by comprising a tank body (10) which is vertically arranged, wherein a feed inlet (13) for feeding aluminum ash and a water distribution port (14) for injecting water are arranged on the tank body (10); a discharge hole (16) for discharging the reacted materials is formed in the bottom of the tank body (10); a stirring component (20) for stirring the water and the aluminum ash in the tank body (10) is arranged in the tank body (10); the stirring assembly (20) comprises a main stirring paddle (21) and an auxiliary stirring paddle (22) which are arranged in parallel, and the axial direction of the main stirring paddle (21) is consistent with the tank depth direction of the tank body (10); the rotary outer contour of the lower end of the main stirring paddle (21) is larger than the rotary outer contour of the upper end of the main stirring paddle (21), and the rotary outer contour of the lower end of the main stirring paddle (21) invades below the auxiliary stirring paddle.

2. The slurry reactor according to claim 1, wherein the main stirring paddle (21) is arranged in the center of the tank (10), the main stirring paddle (21) comprises a main stirring shaft (211), and a first stirring blade (212) and a second stirring blade (213) which are sequentially arranged along the axial direction of the main stirring shaft (211), the first stirring blade (212) is arranged at the upper part of the main stirring shaft (211), the second stirring blade (213) is arranged at the lower end part of the main stirring shaft (211), and the revolving outer contour of the second stirring blade (213) is larger than the revolving outer contour of the first stirring blade (212);

the auxiliary stirring paddles (22) are arranged along the circumferential direction of the main stirring paddle (21), each auxiliary stirring paddle (22) consists of an auxiliary stirring shaft (221) and auxiliary stirring blades (222) which are sequentially arranged along the axial direction of the auxiliary stirring shaft (221), and the rotating outer contour of the second stirring blade (213) extends to the inside of the rotating outer contour of each auxiliary stirring blade (222) along the radial direction.

3. A slurry reactor according to claim 1, characterized in that the inlet (13) is arranged in the side wall of the vessel (10) and that the inlet (13) is oriented tangentially to the side wall of the vessel (10) at the inlet (13).

4. The slurry reactor according to claim 2, wherein the tank body (10) is formed by connecting a cylindrical tank body part (11) and a conical tank body part (12) which are correspondingly arranged up and down, the first stirring blades (212) are distributed in the cylindrical tank body part (11), and the second stirring blades (213) are arranged in the conical tank body part (12); the auxiliary stirring paddle (22) is positioned in the cylindrical tank body part (11).

5. A slurry reactor according to claim 4, wherein each secondary stirring blade (222) of the same secondary stirring blade (22) is arranged corresponding to the interval region between every two adjacent primary stirring blades of the primary stirring blade (21).

6. The slurry reactor according to claim 4, wherein the main stirring blade and the sub-stirring blade (222) are each formed of a helical blade.

7. A slurry reactor according to claim 6, wherein there is one main stirring paddle (21) and two auxiliary stirring paddles (22), and the two auxiliary stirring paddles (22) are arranged at equal intervals along the circumference of the main stirring paddle (21).

8. The slurry reactor according to claim 1, wherein a discharge valve (30) is disposed at the discharge port (16) for adjusting the opening of the discharge port (16).

9. The slurry reactor according to claim 1, wherein the upper part of the tank (10) is further provided with an exhaust port (15) for exhausting gas in the tank (10), and the exhaust port (15) is externally connected with a waste gas treatment device capable of performing harmless treatment on the gas.

10. A slurry reactor according to claim 4, characterized in that the inlet (13) is arranged at the upper part of the cylindrical tank body (11), the distribution port (14) is arranged at the top of the tank body (10), and the outlet (16) is arranged at the lowest part of the bottom of the conical tank body (12).