CN216243528U - Opposite-impact continuous turbulent flow nitrogen trichloride enrichment preventing intermediate tank - Google Patents

Abstract

The utility model provides a hedging type continuous turbulent flow nitrogen trichloride enrichment prevention middle tank which comprises a tank body, wherein the tank body is of a hollow tank-shaped structure, a liquid discharge pipe is connected to the bottom end of the tank body, a submerged pump is arranged at the top end of the tank body, the submerged pump is connected with a liquid conveying pipe, a first return pipe is connected to the middle of the liquid conveying pipe, the other end of the first return pipe is connected with the liquid discharge pipe, a second return pipe is connected to the middle of the first return pipe, the second return pipe penetrates into the tank body from the top of the tank body, a liquid distribution ring is connected to the inner end of the second return pipe, and a plurality of liquid discharge pipes are connected to the liquid distribution ring along the circumferential direction of the liquid distribution ring. According to the utility model, the first return pipe and the second return pipe are arranged to return part of the liquid chlorine to the interior of the tank body and carry out hedging with the liquid chlorine in the tank body, so that the gathered nitrogen trichloride and the liquid chlorine at the bottom of the tank body are uniformly mixed and discharged in time, and the nitrogen trichloride is effectively prevented from forming enrichment in the tank body to generate potential safety hazards; simple structure, low cost, convenient and fast use mode.

Description

Opposite-impact continuous turbulent flow nitrogen trichloride enrichment preventing intermediate tank

Technical Field

The utility model belongs to the technical field of chemical equipment, and relates to a hedging type continuous turbulent flow nitrogen trichloride enrichment prevention intermediate tank.

Background

During the transportation and use process of liquid chlorine, nitrogen trichloride is often generated, according to the regulation of chlorine safety regulations (GB 11984-2008), the index requirement of nitrogen trichloride is controlled within 40mg/L, nitrogen trichloride density is slightly greater than that of liquid chlorine, nitrogen trichloride is gradually enriched at the bottoms of a middle tank, a storage tank and the like, once the nitrogen trichloride density reaches the explosion limit, the consequence is unreasonable, although the chlorine water washing dechlorination process has obvious effect on greatly reducing the content of nitrogen trichloride in chlorine, inevitable nitrogen trichloride exists in liquid chlorine, and the nitrogen trichloride is dangerous as long as the nitrogen trichloride is enriched to a certain concentration, nitrogen trichloride explosion and explosion accidents in the industrial production of chlor-alkali in China are not uncommon, the explosion of nitrogen trichloride causes serious damage to production equipment, and casualties and chlorine leakage accidents of different degrees are caused, and the harm is extremely large. Therefore, nitrogen trichloride is enriched at the bottoms of the intermediate tank, the storage tank and the like, and great hidden danger exists for the safe production of chlor-alkali. Nitrogen trichloride is easy to decompose and explode under the conditions of vibration and ultrasonic waves, and explosion can be induced by heat, light, mechanical impact and sparks, so that a mechanical stirring process cannot be adopted when enrichment is avoided, nitrogen trichloride is always uniformly mixed, and other substances cannot be introduced during treatment.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a hedging type continuous turbulent flow nitrogen trichloride enrichment preventing intermediate tank aiming at the problems in the prior art.

Therefore, the utility model adopts the following technical scheme:

the utility model provides a groove in middle of nitrogen trichloride enrichment is prevented to continuous turbulent flow of hedging formula, includes the cell body, the cell body is hollow tank column structure, the bottom of cell body is connected with the fluid-discharge tube, and the top of cell body is equipped with the submerged pump, the bottom of submerged pump is located the cell body lower part, and the submerged pump is connected with the transfer line, the middle part of transfer line is connected with first back flow, the other end of first back flow is connected with the middle part of fluid-discharge tube, the middle part of first back flow is connected with the second back flow, it is internal that the groove is worn from the top of cell body to the second back flow, and the inner of second back flow is connected with inside branch liquid ring that is hollow structure, divide liquid ring to have a plurality of drain pipes along its circumference connection.

Further, one side of middle groove is equipped with the liquid chlorine storage tank, the liquid chlorine storage tank is connected with the feed liquor pipe, the feed liquor pipe is connected with the bottom of cell body.

Furthermore, a liquid inlet valve is arranged on the liquid inlet pipe.

Furthermore, a return valve is arranged on each of the first return pipe and the second return pipe.

Furthermore, a drain valve is arranged on the drain pipe.

Furthermore, one end of the liquid discharge pipe, which is far away from the trough body, is connected with an alkali removal pool.

Furthermore, one end of the infusion tube, which is far away from the groove body, is connected with a liquid chlorine distribution cavity.

The utility model has the beneficial effects that: the first reflux pipe and the second reflux pipe are arranged to reflux part of the liquid chlorine to the interior of the tank body and carry out hedging with the liquid chlorine in the tank body, so that the nitrogen trichloride gathered at the bottom of the tank body is uniformly mixed with the liquid chlorine and is discharged in time, and the nitrogen trichloride is effectively prevented from forming enrichment in the tank body to generate potential safety hazards; simple structure, low cost, convenient and fast use mode.

Drawings

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

in the figure, 1-groove body, 2-liquid discharge pipe, 3-alkali removal pool, 4-liquid discharge valve, 5-liquid chlorine storage tank, 6-liquid inlet pipe, 7-liquid inlet valve, 8-submerged pump, 9-liquid transfer pipe, 10-liquid chlorine distribution cavity, 11-first return pipe, 12-second return pipe, 13-liquid distribution ring, 14-liquid discharge pipe and 15-return valve.

Detailed Description

The utility model is described in detail below with reference to the accompanying drawings:

as shown in figure 1, the counter-flushing continuous turbulent flow nitrogen trichloride enrichment-preventing intermediate tank comprises a tank body 1, the tank body 1 is of a hollow tank-shaped structure, the bottom end of the tank body 1 is connected with a liquid discharge pipe 2, one end of the liquid discharge pipe 2, which is far away from the tank body, is connected with an alkali removal tank 3, the alkali removal tank 3 is used for collecting other impurities in the tank body 1, the liquid discharge pipe 2 is provided with a liquid discharge valve 4, one side of the tank body 1 is provided with a liquid chlorine storage tank 5 for storing chlorine liquid, the liquid chlorine storage tank 5 is connected with a liquid inlet pipe 6, the liquid inlet pipe 6 is connected with the bottom end of the tank body 1, the liquid inlet pipe 6 is provided with a liquid inlet valve 7, liquid chlorine in the liquid chlorine storage tank 5 can be input into the tank body 1 through the liquid inlet pipe 6, the top end of the tank body 1 is provided with a submerged pump 8, the bottom end of the submerged pump 8 is positioned at the lower part of the tank body 1, the submerged pump 8 is connected with a liquid chlorine distribution chamber 10, one end of the liquid chlorine distribution chamber 9, and a plurality of liquid chlorine pipes can be connected with the liquid chlorine distribution chamber 10, the liquid chlorine is transported to different locations for use.

The middle part of the transfusion tube 9 is connected with a first return tube 11, the other end of the first return tube 11 is connected with the middle part of the liquid discharge tube 2, in particular to the tank body 1, liquid chlorine at the position in the liquid conveying pipe 9 can be input to the position between the liquid discharge valves 4 in the liquid discharge pipe 2 through the first return pipe 11 and connected, then through in fluid-discharge tube 2 feedback cell body 1, the middle part of first back flow pipe 11 is connected with second back flow pipe 12, second back flow pipe 12 penetrates in cell body 1 from the top of cell body 1, the inner of second back flow pipe 2 is connected with inside branch liquid ring 13 that is hollow structure, divide liquid ring 13 to have a plurality of drain pipes 14 along its circumference, liquid chlorine accessible in second back flow pipe 2 divides liquid ring 13 and drain pipe 14, evenly input inside in the cell body 1, make its and the liquid chlorine misce bene in the cell body 1, directional offset, in addition, respectively be equipped with a return valve 15 on first back flow pipe 11 and the second back flow pipe 12.

The use mode of the utility model is as follows:

when in use, firstly the liquid inlet valve 7 is opened to ensure that the liquid chlorine in the liquid chlorine storage tank 5 is input into the tank body 1 through the liquid inlet pipe 6, the two return valves 15 are opened, the liquid discharge valve 4 is closed, then the submerged pump 8 can be started to input the liquid chlorine in the tank body 1 into the liquid chlorine distribution cavity 10 through the liquid delivery pipe 9, in the process, part of the liquid chlorine in the liquid delivery pipe 9 is input into the liquid discharge pipe 2 through the first return pipe 11 and is input back into the tank body 1 through the liquid discharge pipe 2, so that nitrogen trichloride at the bottom of the tank body 1 can be flushed and mixed uniformly, meanwhile, part of the liquid chlorine in the first return pipe 11 is input into the liquid distribution ring 13 in the tank body 1 through the second return pipe 12, is input into the tank body 1 through the liquid discharge pipe 14 on the liquid distribution ring 13 in multiple directions and is fully and uniformly stirred and mixed with the liquid chlorine in the middle of the tank body 1, and is discharged through the liquid delivery pipe 9, thereby effectively preventing the nitrogen trichloride from being enriched in the tank body 1, potential safety hazards are generated, the liquid discharge valve 4 can be opened after the practicability is finished, and impurities in the groove body 1 are discharged into the dealkalization pond 3 through the liquid discharge pipe 2 for treatment.

Claims (7)

1. The utility model provides a groove in middle of nitrogen trichloride enrichment is prevented to continuous turbulent flow of hedging formula, a serial communication port, including cell body (1), cell body (1) is hollow tank column structure, the bottom of cell body (1) is connected with fluid-discharge tube (2), and the top of cell body (1) is equipped with submerged pump (8), the bottom of submerged pump (8) is located cell body (1) lower part, and submerged pump (8) are connected with transfer line (9), the middle part of transfer line (9) is connected with first back flow pipe (11), the other end of first back flow pipe (11) is connected with the middle part of fluid-discharge tube (2), the middle part of first back flow pipe (11) is connected with second back flow pipe (12), in second back flow pipe (12) penetrates cell body (1) from the top of cell body (1), the inner of second back flow pipe (12) is connected with the branch liquid ring (13) that inside is hollow structure, the liquid separating ring (13) is connected with a plurality of liquid outlet pipes (14) along the circumferential direction.

2. The opposite continuous turbulent flow nitrogen trichloride enrichment-preventing intermediate tank as claimed in claim 1, wherein one side of the tank body (1) is provided with a liquid chlorine storage tank (5), the liquid chlorine storage tank (5) is connected with a liquid inlet pipe (6), and the liquid inlet pipe (6) is connected with the bottom end of the tank body (1).

3. The opposite continuous turbulent flow nitrogen trichloride enrichment-preventing intermediate tank as claimed in claim 2, wherein a liquid inlet valve (7) is arranged on the liquid inlet pipe (6).

4. The opposite-impact continuous turbulent nitrogen trichloride enrichment-preventing intermediate tank as claimed in claim 1, wherein a reflux valve (15) is provided on each of the first reflux pipe (11) and the second reflux pipe (12).

5. The opposite-impact continuous turbulent nitrogen trichloride enrichment-preventing intermediate tank as claimed in claim 1, wherein a liquid discharge valve (4) is arranged on the liquid discharge pipe (2).

6. The opposite continuous turbulent flow nitrogen trichloride enrichment-preventing intermediate tank as defined in claim 1, wherein one end of the liquid discharge pipe (2) far from the tank body (1) is connected with an alkali removal tank (3).

7. The counter-impact continuous turbulent nitrogen trichloride enrichment-preventing middle tank as claimed in claim 1, wherein one end of the liquid conveying pipe (9) far away from the tank body (1) is connected with a liquid chlorine distribution cavity (10).

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