CN219663634U - Venturi ejector - Google Patents

Abstract

The utility model discloses a venturi ejector, and belongs to the technical field of material conveying. The device mainly comprises a main feeding pipe, a discharging pipe, an air inlet pipe and a mixing feeding pipe, wherein the main feeding pipe is used for inputting materials, the discharging pipe is used for outputting materials, the air inlet pipe is used for conveying sulfur dioxide into a venturi injector, the mixing feeding pipe is connected with the mixing feeding pipe, the mixing feeding pipe comprises at least two groups of fluid feeding pipes, the fluid feeding pipes are used for inputting reactants, the mixing pipe is connected with the main feeding pipe and used for collecting the reactants input by the fluid feeding pipes, a valve is arranged on the mixing feeding pipe and used for opening or closing the fluid feeding pipes, and at least three groups of fluid feeding pipes are arranged on the mixing feeding pipes on the venturi injector, so that other reactants are added in the reaction process. The venturi injector of the utility model achieves the effect of adding other reactants in the reaction process.

Description

Venturi ejector

Technical Field

The utility model relates to the technical field of material conveying, in particular to a venturi ejector.

Background

The venturi injector adopts a venturi tube, and a fan or a Roots blower is used for conveying materials to a place beyond 100 meters through a pipeline under the pressure of about 0.5 bar;

the venturi ejector is generally applied to the preparation of nitrososulfuric acid, absorbs sulfur dioxide through the venturi ejector and conveys the sulfur dioxide to the reaction kettle for reaction, so that the preparation of nitrososulfuric acid is realized;

as an utility model patent with publication number CN209872827U, specifically disclosed is an acidification device for producing dinaphthol, which combines a venturi ejector with an acidification kettle, so that the absorption of sulfur dioxide and the acidification of phenol sodium salt performed in the acidification kettle are performed in the venturi ejector in advance, and after absorbing sulfur dioxide, the liquid entering the acidification kettle is kept at normal pressure;

in the actual reaction process, the venturi ejector usually absorbs sulfur dioxide and conveys the sulfur dioxide to the reaction kettle, so that the sulfur dioxide and reactants are mixed through the reaction kettle, but in order to uniformly react and mix the reactions in the reaction kettle, other reactants are required to be added through a pipeline, so that the purpose of adding other reactants is achieved,

in the above-mentioned publication, since the acidification of sulfur dioxide and sodium phenolate is performed in advance in the venturi injector, and other reactants need to be added, in the actual production process, the reactants are fed through the feed port on the reaction kettle, and a period of time is required from the time of adding the reactants into the reaction kettle to the time of starting circulation, which may result in poor mixing effect of the newly added reactants, the reactants can be added through the venturi injector, so that the materials in the reaction kettle can be added with the new reactants in the circulation process, and the above-mentioned problems are optimized, however, the existing venturi injector is only provided with a single fluid inlet, so that the reactants cannot be added through the venturi injector, so that it is necessary to provide a venturi injector to solve the above-mentioned problems.

It should be noted that the above information disclosed in this background section is only for understanding the background of the inventive concept and, therefore, it may contain information that does not constitute prior art.

Disclosure of Invention

Based on the above problems existing in the prior art, the present utility model aims to solve the problems: a venturi injector is provided to achieve the effect of adding other reactants during the reaction.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a venturi sprayer, includes main inlet pipe, this main inlet pipe is used for the input of material, and the discharging pipe is used for the output of material, the intake pipe is used for carrying sulfur dioxide to in the venturi sprayer, main inlet pipe department is connected with the mixture inlet pipe, the mixture inlet pipe is including two at least fluid inlet pipes, the fluid inlet pipe is used for the input reactant, the mixture pipe, this mixture pipe is connected with main inlet pipe and is used for with the reactant of fluid inlet pipe input is assembled.

Furthermore, the mixed feed pipe is made of carbon steel.

Further, a valve is mounted on the mixing feed tube to open or close the fluid feed tube.

Further, the valves are provided with three groups.

The beneficial effects of the utility model are as follows: according to the venturi ejector, at least three groups of fluid feeding pipes are arranged on the mixing feeding pipe on the venturi ejector, so that other reactants are added in the reaction process, and the effect of adding other reactants in the reaction process is achieved.

In addition to the objects, features and advantages described above, the present utility model has other objects, features and advantages. The present utility model will be described in further detail with reference to the drawings.

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 is a schematic view of a venturi eductor of the present utility model;

FIG. 2 is a schematic diagram of the operational flow of FIG. 1;

wherein, each reference sign in the figure:

1. a fluid feed tube; 2. a valve; 3. a mixing feed tube; 4. a venturi ejector; 5. an air inlet pipe; 6. a discharge pipe; 7. a separation chamber; 8. a reaction kettle; 9. a gas line; 10. a fluid conduit; 11. a circulation pump; 31. a mixing tube; 41. a main feed pipe; 100. tail gas; 101. an adsorbent;

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.

In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. 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.

As shown in fig. 1, the present utility model provides a venturi injector for the preparation of nitrososulfuric acid, the venturi injector 4 comprising an air inlet pipe 5, the air inlet pipe 5 being used for connecting a pipe for conveying sulfur dioxide, thereby conveying sulfur dioxide into the venturi injector 4;

meanwhile, one end of the venturi ejector 4 is provided with a main feeding pipe 41, the end part of the main feeding pipe 41 is connected with a mixed feeding pipeline 3, and the mixed feeding pipeline 3 is made of carbon steel;

meanwhile, a fluid feeding pipe 1 is arranged on the mixed feeding pipe 3, the fluid feeding pipe 1 is used for being connected with a pipe for conveying sulfuric acid, a mixing pipe 31 is arranged between the main feeding pipe 41 and the mixed feeding pipe 3, and the mixing pipe 31 is used for collecting reactants input by the fluid feeding pipe 1;

the following describes the whole process in further detail:

as shown in fig. 2 (this fig. 2 is a schematic diagram of a flow of preparation of nitrososulfuric acid), the flow includes:

the separation chamber 7, there is a tail gas intake pipe on the separation chamber 7, this tail gas intake pipe is used for inputting the tail gas 100 into it, and there is adsorbent 101 in the separation chamber 7, separate the sulfur dioxide in the tail gas 100 through the adsorbent 101, in the utility model, this separation chamber 7 is the prior art, the specific flow refers to the utility model patent of publication number CN106139814A, will not be repeated here;

the separation chamber 7 is provided with a gas pipeline 9, and the output end of the gas pipeline 9 is connected with the fluid feed pipe 1 so as to convey sulfur dioxide into the venturi injector 4 through the gas pipeline 9;

meanwhile, the preparation process also comprises a reaction kettle 8, wherein a fluid pipeline 10 is arranged on the reaction kettle 8, the output end of the fluid pipeline 10 is connected with the fluid feeding pipe 1, and the fluid pipeline 10 is used for conveying concentrated nitric acid in the reaction kettle 8 into the Venturi ejector 4;

the discharging pipe 6 on the venturi injector 4 is communicated with the reaction kettle 8, so that concentrated nitric acid is conveyed into the reaction kettle 8, the fluid pipeline 10 is provided with a circulating pump 11, and a complete circulation is formed between the reaction kettle 8 and the venturi injector 4 through the circulating pump 11 and the fluid pipeline 10, so that the pressure generated by the circulation sucks sulfur dioxide in the separation chamber 7 into the venturi injector 4 through the air inlet pipe 5 on the venturi injector 4;

in the above structure, since incomplete reaction is likely to occur in the reaction kettle 8 during the reaction, and the addition of the reactant is required, the venturi injector 4 is improved by the following specific improvement method:

at least three groups of fluid feeding pipes 1 are arranged on the mixed feeding pipe 3, valves 2 are arranged on the fluid feeding pipes 1, at least three groups of valves 2 are arranged on the fluid feeding pipes 1, the valves 2 are used for opening or closing the fluid feeding pipes 1, when the reactant is insufficient and other reactants need to be added, the fluid feeding pipes 1 are connected with other reactant conveying pipelines through the multiple groups of fluid feeding pipes, and other reactants are conveyed to the Venturi ejector 4, so that the effect of adding the other reactants in the reaction process is achieved;

in the present utility model, the valves 2 on one group of the fluid feeding pipes 1 are connected with the fluid pipeline 10, and the valves 2 on the other two groups of the fluid feeding pipes 1 are in a closed state, so as to prevent the concentrated nitric acid conveyed by the fluid pipeline 10 from leaking from the other two groups of the fluid feeding pipes 1, and the number of the fluid feeding pipes 1 is specific to the practical situation, and the present utility model is not limited herein.

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 (4)

1. A venturi eductor for use in the preparation of nitrososulfuric acid, the venturi eductor (4) comprising:

a main feed pipe (41), the main feed pipe (41) being used for the input of material;

a discharge pipe (6), wherein the discharge pipe (6) is used for outputting materials;

the air inlet pipe (5) is used for conveying sulfur dioxide into the venturi injector (4);

the method is characterized in that: the main feeding pipe (41) is connected with a mixing feeding pipe (3), and the mixing feeding pipe (3) comprises:

-at least two sets of fluid feed pipes (1), said fluid feed pipes (1) being used for feeding reactants;

a mixing pipe (31), the mixing pipe (31) is connected with the main feeding pipe (41) and is used for collecting reactants fed by the fluid feeding pipe (1).

2. A venturi eductor according to claim 1, wherein: the mixing feed pipe (3) is made of carbon steel.

3. A venturi eductor according to claim 1, wherein: the mixing feed pipe (3) is provided with a valve (2), and the valve (2) is used for opening or closing the fluid feed pipe (1).

4. A venturi injector according to claim 3, wherein: the valves (2) are provided with three groups.