CN220657453U

CN220657453U - Neutralization reaction kettle

Info

Publication number: CN220657453U
Application number: CN202322208905.5U
Authority: CN
Inventors: 王福林; 邓文; 柴君平; 岳军; 柔建明; 陆逞赢; 马青云; 张能
Original assignee: Qinghai Salt Lake Industry Co Ltd
Current assignee: Qinghai Salt Lake Industry Co Ltd
Priority date: 2023-08-16
Filing date: 2023-08-16
Publication date: 2024-03-26
Anticipated expiration: 2033-08-16

Abstract

The utility model provides a neutralization reaction kettle. The neutralization reaction kettle comprises: a reaction kettle (1); an alkali liquor feeding pipe (2) connected to the reaction kettle (1) and used for inputting alkali liquor into the reaction kettle (1); an acid liquor feed pipe (3) connected to the reaction kettle (1) and used for feeding acid liquor into the reaction kettle (1); an alkali liquor fine adjustment pipe (4) connected to the reaction kettle (1) and used for fine adjustment of alkali liquor entering the reaction kettle (1); and the acid liquor fine adjustment pipe (5) is connected to the reaction kettle (1) and is used for fine adjustment of acid liquor entering the reaction kettle (1). The neutralization reaction kettle can quickly adjust the PH value of the neutralization reaction kettle in place.

Description

Neutralization reaction kettle

Technical Field

The utility model relates to the technical field of neutralization kettles, in particular to a neutralization reaction kettle.

Background

The neutralization kettle is mainly used as a reaction kettle for the neutralization reaction between substances, heat or harmful gas can be continuously generated in the neutralization reaction process, the continuously generated heat can heat air in the neutralization kettle, so that the air pressure in the neutralization kettle is increased, the safety risk exists due to the fact that the air pressure is too large, and the generated harmful gas can not be effectively treated in time, so that the environment is polluted.

The utility model provides a Chinese patent application with an exhaust gas purification pollution-free neutralization kettle, the application number is 202121076924.1, the Chinese patent application with the exhaust gas purification pollution-free neutralization kettle comprises a neutralization kettle, the end part of the neutralization kettle is provided with a hinged upper cover, a rotating blade is arranged in the neutralization kettle, an interlayer is arranged on the inner wall of the neutralization kettle, circulating condensed water is introduced into the interlayer, one side of the neutralization kettle is provided with a filter tank, a fan is arranged between the neutralization kettle and the filter tank, one end of the fan is connected with a first air outlet on the neutralization kettle through a connecting pipe, and the other end of the fan is connected with an air inlet on the filter tank through a mixing pipe. From this structure, the material is thrown into in the neutralization cauldron, carries out abundant mixing stirring to the material through pivoted paddle, and the heat that produces in the material neutralization reaction in-process can be taken away by the comdenstion water of intermediate layer internal recycle, and the harmful gas of production is taken out to the rose box in through the fan, carries out effectual filtration to the harmful gas and discharges again, has guaranteed the normal clear of material neutralization reaction.

When the neutralization kettle is used for feeding materials, the materials are fed into the neutralization kettle through the first feeding port and the second feeding port, however, when the neutralization reaction PH value in the neutralization kettle is close to the reaction end point, fine adjustment is needed, and the feeding amount of the materials fed into the first feeding port and the second feeding port cannot be controlled, so that the neutralization reaction PH value is low in adjustment efficiency near the end point, and multiple adjustment is needed to be adjusted in place.

Disclosure of Invention

The utility model mainly aims to provide a neutralization reaction kettle, which can quickly adjust the PH value of the neutralization reaction kettle in place.

In order to achieve the above object, according to an aspect of the present utility model, there is provided a neutralization reaction vessel comprising:

a reaction kettle;

an alkali liquor feeding pipe connected to the reaction kettle and used for inputting alkali liquor into the reaction kettle;

the acid liquid feeding pipe is connected to the reaction kettle and is used for feeding acid liquid into the reaction kettle;

the alkali liquor fine adjustment pipe is connected to the reaction kettle and is used for fine adjustment of alkali liquor entering the reaction kettle;

and the acid liquor fine adjustment pipe is connected to the reaction kettle and is used for fine adjustment of acid liquor entering the reaction kettle.

Further, the neutralization reaction kettle further comprises an alkali liquor trimming tank and/or an acid liquor trimming tank which are arranged above the reaction kettle, wherein an alkali liquor trimming pipe is connected between the alkali liquor trimming tank and the reaction kettle, the acid liquor trimming pipe is connected between the acid liquor trimming tank and the reaction kettle, the alkali liquor trimming tank inputs trimming alkali liquor to the reaction kettle through the alkali liquor trimming pipe by utilizing static pressure, and the acid liquor trimming tank inputs trimming acid liquor to the reaction kettle through the acid liquor trimming pipe by utilizing static pressure.

Further, regulating valves are arranged on the alkali liquor feeding pipe, the acid liquor feeding pipe, the alkali liquor trimming pipe and the acid liquor trimming pipe.

Further, the pipe diameter of the alkali liquor feeding pipe is larger than that of the alkali liquor trimming pipe, and the pipe diameter of the acid liquor feeding pipe is larger than that of the acid liquor trimming pipe.

Further, the pipe diameter of the alkali liquor trimming pipe is smaller than 4/5 of the pipe diameter of the alkali liquor feeding pipe, and the pipe diameter of the acid liquor trimming pipe is smaller than 4/5 of the pipe diameter of the acid liquor feeding pipe.

Further, a heating pipeline is connected to the reaction kettle, and the heating pipeline is configured to heat the reaction kettle from the bottom of the reaction kettle.

Further, the top of reation kettle is provided with the sample hole, and the sample hole sets up in reation kettle one side that is close to the operation panel.

Further, the top of the reaction kettle is connected with an induced air device, and the induced air device comprises an exhaust funnel and an induced draft fan arranged on the exhaust funnel, and the exhaust funnel is communicated with the reaction kettle.

Further, each pipe section of the alkali liquor feeding pipe, the acid liquor feeding pipe, the alkali liquor trimming pipe and the acid liquor trimming pipe are connected through a flange, a flange outer cover is provided with a protective cover, and the protective cover forms sealing protection for the flange.

Further, the bottom of the reaction kettle is also provided with a radar liquid level gauge, and the radar liquid level gauge is positioned outside the reaction kettle and is used for detecting the liquid level of the reaction kettle.

By applying the technical scheme of the utility model, the neutralization reaction kettle comprises: a reaction kettle; an alkali liquor feeding pipe connected to the reaction kettle and used for inputting alkali liquor into the reaction kettle; the acid liquid feeding pipe is connected to the reaction kettle and is used for feeding acid liquid into the reaction kettle; the alkali liquor fine adjustment pipe is connected to the reaction kettle and is used for fine adjustment of alkali liquor entering the reaction kettle; and the acid liquor fine adjustment pipe is connected to the reaction kettle and is used for fine adjustment of acid liquor entering the reaction kettle. This neutralization reaction cauldron is through setting up alkali lye inlet pipe, the acidizing fluid inlet pipe, alkali lye fine setting pipe and acidizing fluid fine setting pipe, can utilize alkali lye inlet pipe and acidizing fluid inlet pipe to carry out the feeding when needs a large amount of feeds, when neutralization reaction PH value is close to the reaction end, stop utilizing alkali lye inlet pipe and acidizing fluid inlet pipe to carry out the feeding, switch to utilize alkali lye fine setting pipe and acidizing fluid fine setting pipe to finely tune the feeding, can reduce the flow of acidizing fluid and alkali lye in entering reaction cauldron, make the entering speed of acidizing fluid and alkali lye slow down, the precision becomes high, can more accurately control the flow of acidizing fluid and alkali lye in entering reaction cauldron, make neutralization reaction PH value in the reaction cauldron adjust in place fast.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 shows a schematic diagram of the overall structure of a neutralization reaction vessel according to an embodiment of the present utility model; and

fig. 2 shows a schematic top view of a neutralization reaction vessel according to an embodiment of the present utility model.

Wherein the above figures include the following reference numerals:

1. a reaction kettle; 2. an alkali liquor feeding pipe; 3. an acid liquid feeding pipe; 4. an alkali liquor fine adjustment pipe; 5. an acid liquor fine adjustment pipe; 6. an alkali liquor fine adjustment tank; 7. an acid liquor fine adjustment tank; 8. a regulating valve; 9. a heating line; 10. a sampling hole; 11. an exhaust pipe; 12. an induced draft fan; 13. a radar level gauge; 14. a stirring device; 15. an overflow pipe; 16. a discharge line; 17. and (5) a manhole.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

Referring to fig. 1 to 2 in combination, according to an embodiment of the present utility model, a neutralization reaction vessel includes: a reaction kettle 1; an alkali liquor feeding pipe 2 connected to the reaction kettle 1 and used for inputting alkali liquor into the reaction kettle 1; an acid liquor feed pipe 3 connected to the reaction kettle 1 and used for feeding acid liquor into the reaction kettle 1; the alkali liquor fine adjustment pipe 4 is connected to the reaction kettle 1 and is used for carrying out fine adjustment on alkali liquor entering the reaction kettle 1; and the acid liquor fine adjustment pipe 5 is connected to the reaction kettle 1 and is used for fine adjustment of the acid liquor entering the reaction kettle 1.

This neutralization reaction cauldron is through setting up alkali lye inlet pipe 2, acidizing fluid inlet pipe 3, alkali lye fine setting pipe 4 and acidizing fluid fine setting pipe 5, can utilize alkali lye inlet pipe 2 and acidizing fluid inlet pipe 3 to carry out the feeding when needs a large amount of feeding, when neutralization reaction PH value is close to the reaction end, stop utilizing alkali lye inlet pipe 2 and acidizing fluid inlet pipe 3 to carry out the feeding, switch to utilize alkali lye fine setting pipe 4 and acidizing fluid fine setting pipe 5 to carry out the fine setting to the feeding, can reduce the flow of acidizing fluid and the alkali lye that gets into in the reation kettle 1, make the entering speed of acidizing fluid and alkali lye slow down, the precision becomes high, can more accurately control the flow of acidizing fluid and alkali lye that gets into in the reation kettle 1, make neutralization reaction PH value in the reation kettle 1 adjust to the target place fast.

There are two ways to know the pH in the reaction vessel 1 when the neutralization reaction vessel pH adjustment is performed. Firstly, a PH value monitor is arranged in the middle of a part of reaction kettles 1, when the PH value is close to neutral, feeding is stopped, sampling is performed at a sampling port, PH value test paper is used for measuring the PH value manually for checking, if the PH value meets the process control requirement, the PH value is conveyed to downstream production, and if the PH value does not meet the requirement, fine adjustment is performed until the PH value meets the requirement; secondly, calculating the approximate acid-inlet and alkali-inlet amount through the acid-base concentration and the reaction equation detected in real time, stopping feeding after the feeding reaches the calculated feeding amount, sampling at a sampling port, manually measuring the PH value by using PH value test paper, conveying to downstream production if the PH value meets the process control requirement, and carrying out fine adjustment until the PH value meets the requirement if the PH value does not meet the requirement.

In one embodiment, the neutralization reaction kettle further comprises an alkali liquor trimming tank 6 and/or an acid liquor trimming tank 7 arranged above the reaction kettle 1, wherein the alkali liquor trimming pipe 4 is connected between the alkali liquor trimming tank 6 and the reaction kettle 1, the acid liquor trimming pipe 5 is connected between the acid liquor trimming tank 7 and the reaction kettle 1, the alkali liquor trimming tank 6 utilizes static pressure to input trimming alkali liquor to the reaction kettle 1 through the alkali liquor trimming pipe 4, and the acid liquor trimming tank 7 utilizes static pressure to input trimming acid liquor to the reaction kettle 1 through the acid liquor trimming pipe 5.

In the embodiment, a platform of about 3m-4m above the neutralization reaction kettle is provided with 1 volume of about 1m ³ Is about 1m in volume and 1 acid liquor trimming tank 7 ³ Is transported to the acid liquor fine adjustment tank 7 for temporary storage by a pump, and is transported to the alkali liquor fine adjustment tank 6 for temporary storage by a pump. The acid liquor flows into the acid liquor trimming pipe 5 through static pressure in the acid liquor trimming tank 7, and the alkali liquor flows into the alkali liquor trimming pipe 4 through static pressure in the alkali liquor trimming tank 6.

When the pH value of the neutralization reaction approaches to the reaction end point, the pH value needs to be finely adjusted, the acid-base requirement amount is small in the fine adjustment stage, and the acid and base feeding is slow. And the feed pump is in the open state when the feed pipeline pipe diameter is big and the feeding, if finely tune with the feed pipeline, the feed valve aperture is too little can cause the pump to hold down the pressure and damage the pump, even if the valve aperture is opened very little, because of the liquid pressure is big in the pump operating pipeline, the feed volume also can be very big, can't finely tune.

The acid-base liquid in the fine adjustment pipeline comes from the fine adjustment tank, and the acid-base liquid is conveyed into the reaction kettle 1 through static pressure, so that the acid-base feeding amount can be better controlled by the fine adjustment pipeline in the fine adjustment stage, and the fine adjustment of the acid-base liquid in the reaction kettle 1 is performed.

In one embodiment, the alkali liquor feeding pipe 2, the acid liquor feeding pipe 3, the alkali liquor trimming pipe 4 and the acid liquor trimming pipe 5 are all provided with regulating valves 8.

Through set up governing valve 8 on alkali lye inlet pipe 2, acidizing fluid inlet pipe 3, alkali lye fine setting pipe 4 and acidizing fluid fine setting pipe 5, can utilize governing valve 8 to adjust the flow of each pipeline to make the flow of entering into acidizing fluid and alkali lye in the reation kettle 1 can adjust according to the volume of required acidizing fluid and alkali lye, can enough guarantee feed efficiency, can guarantee the precision as far as possible again, can realize taking into account, improve PH value governing efficiency.

In one embodiment, the pipe diameter of the lye feeding pipe 2 is larger than the pipe diameter of the lye trimming pipe 4, and the pipe diameter of the lye feeding pipe 3 is larger than the pipe diameter of the lye trimming pipe 5.

Because the inlet pipe is main feeding path, and fine setting pipe mainly used last stage's fine setting improves the feeding precision, consequently, can make the pipe diameter of inlet pipe bigger, improve the feed rate, make the pipe diameter of fine setting pipe less simultaneously, conveniently carry out the fine control to the feed rate and the feed volume at the end of the feeding.

In one embodiment, the pipe diameter of the lye trimming pipe 4 is smaller than 4/5 of the pipe diameter of the lye feeding pipe 2, and the pipe diameter of the acid trimming pipe 5 is smaller than 4/5 of the pipe diameter of the acid feeding pipe 3.

In one embodiment, the pipe diameter of the alkali liquor feeding pipe 2 and the pipe diameter of the acid liquor feeding pipe 3 are both 100mm, the pipe diameter of the alkali liquor trimming pipe 4 and the pipe diameter of the acid liquor trimming pipe 5 are both 50mm, and the pipe diameter of the alkali liquor trimming pipe 4 and the pipe diameter of the acid liquor trimming pipe 5 can be smaller, so that higher feeding precision is provided.

In one embodiment, a heating line 9 is connected to the reaction vessel 1, and the heating line 9 is configured to heat the reaction vessel 1 from the bottom of the reaction vessel 1. The heating steam is introduced into the heating pipeline 9, so that the internal temperature of the reaction kettle 1 can be regulated and kept at the optimal reaction temperature range, the acid-base neutralization reaction efficiency is improved, the reaction time is saved, the internal temperature of the reaction kettle 1 can be kept in a temperature range, the solution at the bottom of the reaction kettle 1 is heated, and the precipitated crystals are prevented from precipitating at the bottom.

In one embodiment, the top of the reaction kettle 1 is provided with a sampling hole 10, and the sampling hole 10 is arranged on one side of the reaction kettle 1 close to the operation table.

In this embodiment, the aperture of the sampling hole 10 is 450mm or more, and the sampling hole 10 is provided with a cover body which is opened when sampling is required and closed when sampling is not required. The diameter of the cover plate is slightly larger than that of the sampling hole 10, the cover plate is directly covered on the neck of the sampling hole 10, and the neck of the sampling hole 10 is 3-4 mm in height, so that the cover plate is convenient to cooperate with the cover plate.

The cover plate and the sampling hole 10 can be in screw fit, clamping fit or other forms of fit.

In one embodiment, the top of the reaction kettle 1 is connected with an induced air device, and the induced air device comprises an exhaust funnel 11 and an induced draft fan 12 arranged on the exhaust funnel 11, and the exhaust funnel 11 is communicated with the reaction kettle 1.

The top of the reaction kettle 1 is provided with an induced draft device, so that gas produced by acid-base neutralization reaction can be conveniently discharged.

In one embodiment, the alkali liquor feeding pipe 2, the acid liquor feeding pipe 3, the alkali liquor trimming pipe 4 and the acid liquor trimming pipe 5 are connected through flanges, the flange outer cover is provided with a protective cover, and the protective cover forms sealing protection for the flange.

The flange at each position of each pipeline is provided with the protective cover for preventing leakage, so that accidents caused by leakage of acid liquor or alkali liquor from the flange under unexpected conditions can be prevented, and the safety in the production process of the neutralization reaction kettle is improved. The protective cover is sleeved outside the flange and can wrap the flange connection position, the protective cover forms a concave cavity at the bottom and seals at the position matched with the pipeline, when leakage occurs at the flange, leaked acid liquor or alkali liquor can flow into the concave cavity of the protective cover for temporary storage, meanwhile, a detection device can be arranged in the protective cover, when the acid liquor or alkali liquor is temporarily stored in the concave cavity, an alarm can be timely sent out, an operator is reminded of leakage, and the operator can take measures in time to process.

In one embodiment, the bottom of the reaction kettle 1 is further provided with a radar level gauge 13, and the radar level gauge 13 is located outside the reaction kettle 1 and detects the liquid level of the reaction kettle 1. The radar liquid level gauge 13 can timely measure the liquid level in the reaction kettle 1, so that the liquid level in the reaction kettle 1 can be timely obtained, and the feeding of the feeding pipeline is switched into the feeding of the fine adjustment pipeline.

In one embodiment, the reaction kettle 1 is further provided with a stirring device 14, and the stirring device 14 is arranged at the top of the reaction kettle 1 and is positioned at the position of the reaction kettle 1 close to the middle, so that the stirring device can continuously stir in the acid-base neutralization reaction process, and the acid-base full mixing reaction is promoted.

In one embodiment, the reaction kettle 1 is further provided with an overflow pipe 15, a discharge pipeline 16 and a manhole 17, wherein the overflow pipe 15 is arranged at the position 3.7-3.8 m away from the bottom of the reaction kettle 1, the pipe diameter is 125mm, and the solution in the reaction kettle can be effectively prevented from overflowing.

The discharge line 16 is used to convey the solution after the reaction to a feed tank.

The manhole 17 is arranged at the bottom of the reaction kettle 1, has the diameter of 400-500 mm, and can facilitate the cleaning and maintenance of the inside of the reaction kettle 1 by operators through the manhole 17.

In this embodiment, the acid solution is, for example, a nitric acid solution, the alkali solution is, for example, a sodium carbonate solution or a potassium hydroxide solution, or the like, which is capable of undergoing a neutralization reaction with nitric acid, and the sodium nitrate or potassium nitrate solution can be obtained by the neutralization reaction.

It will be apparent that the embodiments described above are merely some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a neutralization reaction cauldron which characterized in that includes:

a reaction kettle (1);

an alkali liquor feeding pipe (2) connected to the reaction kettle (1) and used for inputting alkali liquor into the reaction kettle (1);

an acid liquor feeding pipe (3) connected to the reaction kettle (1) and used for feeding acid liquor into the reaction kettle (1);

an alkali liquor fine adjustment pipe (4) connected to the reaction kettle (1) and used for fine adjustment of alkali liquor entering the reaction kettle (1);

and the acid liquor fine adjustment pipe (5) is connected to the reaction kettle (1) and is used for carrying out fine adjustment on the acid liquor entering the reaction kettle (1).

2. The neutralization reaction kettle according to claim 1, further comprising an alkali liquor trimming tank (6) and/or an acid liquor trimming tank (7) arranged above the reaction kettle (1), wherein the alkali liquor trimming pipe (4) is connected between the alkali liquor trimming tank (6) and the reaction kettle (1), the acid liquor trimming pipe (5) is connected between the acid liquor trimming tank (7) and the reaction kettle (1), the alkali liquor trimming tank (6) inputs trimming alkali liquor to the reaction kettle (1) through the alkali liquor trimming pipe (4) by static pressure, and the acid liquor trimming tank (7) inputs trimming acid liquor to the reaction kettle (1) through the acid liquor trimming pipe (5) by static pressure.

3. The neutralization reaction kettle according to claim 2, wherein regulating valves (8) are arranged on the alkali liquor feeding pipe (2), the acid liquor feeding pipe (3), the alkali liquor trimming pipe (4) and the acid liquor trimming pipe (5).

4. The neutralization reaction kettle according to claim 1, wherein the pipe diameter of the alkali liquor feeding pipe (2) is larger than the pipe diameter of the alkali liquor trimming pipe (4), and the pipe diameter of the acid liquor feeding pipe (3) is larger than the pipe diameter of the acid liquor trimming pipe (5).

5. The neutralization reaction kettle according to claim 4, wherein the pipe diameter of the lye fine adjustment pipe (4) is smaller than 4/5 of the pipe diameter of the lye feeding pipe (2), and the pipe diameter of the lye fine adjustment pipe (5) is smaller than 4/5 of the pipe diameter of the lye feeding pipe (3).

6. The neutralization reaction vessel according to claim 1, characterized in that a heating line (9) is connected to the reaction vessel (1), the heating line (9) being configured to heat the reaction vessel (1) from the bottom of the reaction vessel (1).

7. The neutralization reaction kettle according to claim 1, wherein a sampling hole (10) is arranged at the top of the reaction kettle (1), and the sampling hole (10) is arranged at one side of the reaction kettle (1) close to an operation table.

8. The neutralization reaction kettle according to claim 1, wherein the top of the reaction kettle (1) is connected with an induced draft device, the induced draft device comprises an exhaust funnel (11) and an induced draft fan (12) arranged on the exhaust funnel (11), and the exhaust funnel (11) is communicated with the reaction kettle (1).

9. The neutralization reaction kettle according to claim 1, wherein each pipe section of the alkali liquor feeding pipe (2), the acid liquor feeding pipe (3), the alkali liquor trimming pipe (4) and the acid liquor trimming pipe (5) is connected through a flange, and the flange outer cover is provided with a protective cover, and the protective cover forms a sealing protection for the flange.

10. The neutralization reaction kettle according to claim 1, wherein a radar level gauge (13) is further arranged at the bottom of the reaction kettle (1), and the radar level gauge (13) is located outside the reaction kettle (1) and detects the liquid level of the reaction kettle (1).