CN219539919U

CN219539919U - Flue gas purifying system

Info

Publication number: CN219539919U
Application number: CN202320478463.3U
Authority: CN
Inventors: 杨天成
Original assignee: SHANGHAI REBO GRANULATOR CO Ltd
Current assignee: SHANGHAI REBO GRANULATOR CO Ltd
Priority date: 2023-03-14
Filing date: 2023-03-14
Publication date: 2023-08-18
Anticipated expiration: 2033-03-14

Abstract

The utility model discloses a flue gas purification system, comprising: the lower part of the side wall of the hollow tower body is communicated with a smoke input pipe for introducing smoke into the bottom area of the inner cavity of the hollow tower body; the spraying assembly is arranged in the upper area of the inner cavity of the hollow tower body, and the spraying end of the spraying assembly is downward; the screen assembly comprises a plurality of layers of screens which are sequentially arranged at intervals from top to bottom, and also comprises a central supporting rod which is fixedly connected with all the screens in series, wherein the screen at the highest position is positioned under the spraying assembly; the fan is provided with a ventilation pipe, and the suction end of the fan is communicated with the top of the hollow tower body through the ventilation pipe. The scheme is adopted for treating the pollution gas generated in the production process.

Description

Flue gas purifying system

Technical Field

The utility model relates to the technical field of granulation equipment, in particular to equipment for purifying waste gas generated in the granulation process.

Background

In the flaking process of the granulating equipment, for example, the working condition of sulfur flaking is taken as an example, a patent document with the publication number of 2039687U is taken as an example, a sulfur flaking machine is proposed in the patent document, the background technology in the patent document mentions that 'liquid sulfur is sprayed on a steel belt which rotates slowly to cool the liquid sulfur into thin plate-shaped sulfur', when flaking, the sulfur is converted into solid from liquid state, a certain amount of pollutant gas is released, so that sulfur vapor is formed, and the pollutant gas contains sulfur dioxide, hydrogen sulfide, water vapor and other components, belongs to toxic smoke, and can cause atmospheric pollution if the treatment is improper.

Therefore, there is a need for a purification device that can treat the contaminating gases generated during sheeting.

Disclosure of Invention

The utility model aims to provide a flue gas purification system for treating pollutant gases generated in a production process.

The purpose of the utility model is realized in the following way: a flue gas cleaning system comprising:

the hollow tower body is fixedly arranged and provided with a cavity which is penetrated up and down, and a flue gas input pipe for introducing flue gas into the bottom area of the inner cavity of the hollow tower body is connected to the lower part of the side wall of the hollow tower body;

the spraying assembly is arranged in the upper area of the inner cavity of the hollow tower body, and the spraying end of the spraying assembly is downward arranged;

the screen assembly comprises a plurality of layers of screens which are sequentially arranged at intervals from top to bottom, and also comprises a central supporting rod which is fixedly connected with all the screens in series, wherein the screen at the lowest position is fixed at the bottom of the inner cavity of the hollow tower body, and the screen at the highest position is positioned under the spraying assembly;

the fan is provided with a ventilation pipe, and the suction end of the fan is communicated with the top of the hollow tower body through the ventilation pipe.

The utility model has the beneficial effects that:

the impurity or large particles in the flue gas are filtered by utilizing the plurality of screens, liquid drops sprayed out by the spraying assembly continuously penetrate downwards through meshes of the screens, the downward movement speed of the liquid drops is delayed, the chemical reaction time in the hollow tower body is prolonged, the sufficiency of the chemical reaction of the liquid drops and the flue gas is fully ensured, the completeness of the chemical reaction can be ensured, the decontamination effect is better, and the flue gas is fully purified.

Drawings

Fig. 1 is a system layout of the present utility model.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Detailed Description

The utility model will be further described with reference to figures 1-2 and the specific examples.

As shown in fig. 1, a flue gas cleaning system for removing harmful chemical components in flue gas generated by a granulating apparatus, includes:

the fixed hollow tower body 1 is provided with a cavity which is penetrated up and down, and the lower part of the side wall of the hollow tower body is communicated with a flue gas input pipe 6 which leads flue gas into the bottom area of the inner cavity of the hollow tower body 1;

the spraying assembly is arranged in the upper area of the inner cavity of the hollow tower body 1, and the spraying end of the spraying assembly is downward arranged;

the screen assembly comprises a plurality of layers of screens 8 which are sequentially arranged at intervals from top to bottom, the screens 8 are horizontally arranged, the screens 8 basically cover the horizontal section of the inner cavity of the hollow tower body 1, the screen assembly further comprises a central supporting rod 7 fixedly connected with all the screens 8 in series, the central supporting rod 7 is vertically and fixedly connected with the central positions of all the screens 8 in series, the screen 8 at the lowest position is fixed at the bottom of the inner cavity of the hollow tower body 1, and the screen 8 at the highest position is positioned under the spray assembly;

the fan 10, the fan 10 is provided with a ventilation pipe 9 and an exhaust pipe 11, the suction end of the fan 10 is communicated with the top of the hollow tower body 1 through the ventilation pipe 9, and the exhaust pipe 11 extends vertically and is communicated with the exhaust end of the fan 10.

Wherein, as shown in fig. 2, the spraying assembly comprises:

a solution input pipe 2 for receiving a chemical solution that chemically reacts with the flue gas;

the liquid flow pipe 3 is positioned in the upper area of the inner cavity of the hollow tower body 1, and the solution input pipe 2 penetrates through the side wall of the hollow tower body 1 from outside to inside and is communicated with the liquid flow pipe 3;

a plurality of spray heads 4 which are connected with the fluid flow pipe 3 and are positioned at the lower side of the fluid flow pipe 3 and spray chemical solution downwards, wherein the spray heads 4 are positioned in the inner cavity of the hollow tower body 1, and the spray heads 4 can be atomizing spray heads or other spray heads.

The liquid flow pipe 3 may be an annular pipe, a grid-shaped pipe, or other pipes.

The axis of the liquid flow pipe 3 forms a horizontal plane, all the spray heads 4 are arranged at equal height, which is equivalent to the structure that the liquid flow pipe 3 integrally forms a plane, and all the spray heads 4 also form a plane structure, so that the subsequent chemical reaction of the chemical solution and the flue gas is carried out layer by layer, and the sufficiency of the chemical reaction process is ensured.

After the fan 10 is started, the inner cavity of the hollow tower body 1 forms negative pressure, and airflow which sequentially flows through the smoke input pipe 6, the hollow tower body 1, the ventilation pipe 9, the fan 10 and the exhaust pipe 11 is formed.

When the spray heads 4 spray liquid downwards, all chemical solution sprayed by the spray heads 4 form a plurality of fine liquid drops which move downwards in the hollow tower body 1, and the fine liquid drops are fully contacted with the smoke flowing upwards in the hollow tower body 1 to perform chemical reaction so as to treat the smoke, a plurality of screens 8 can filter impurities or large particles in the smoke, the liquid drops continuously penetrate downwards through meshes of the screens 8, the downward movement speed of the liquid drops is delayed, the chemical reaction time in the hollow tower body 1 is prolonged, the sufficiency of the chemical reaction of the liquid drops and the smoke is fully ensured, the completeness of the chemical reaction can be ensured, and the decontamination effect is better, so that the smoke is fully purified.

In this embodiment, sulfur vapor (containing sulfur dioxide, hydrogen sulfide, water vapor, etc.) generated in the flaking process enters the flue gas input pipe 6, the solution input pipe 2 is connected with the liquid box body through the conveying pump, and alkaline solution (sodium hydroxide) is introduced, so that sodium hydroxide droplets and sulfur vapor perform complete neutralization reaction in the hollow tower body 1, thereby generating liquid substances (substances containing sodium sulfide, sodium sulfite, sulfate, etc.) to flow downwards, sulfur elements are removed from the flue gas, and relatively clean water vapor and clean air are discharged into the atmosphere along with the ventilation pipe 9.

The bottom of the hollow tower body 1 is provided with a recovery pipe orifice 1c communicated with a liquid recovery pipeline, and liquid substances (substances containing sodium sulfide, sodium sulfite, sulfate and the like) generated in the chemical reaction process are collected into a liquid recovery device through the recovery pipe orifice 1c so as to be used later. The bottom of the hollow tower body 1 is an inverted cone-shaped lower cone part 1b, and the recovery nozzle 1c is provided at the lower end of the lower cone part 1b, so that the liquid material can be gathered at the recovery nozzle 1c for discharge.

An input pipe support 5 is fixed on the outer surface of the top of the hollow tower body 1, the solution input pipe 2 is connected with the input pipe support 5 in a penetrating way, and the solution input pipe 2 is supported by the input pipe support 5.

The ventilating pipe 9 comprises an arc-shaped section 9a and a straight pipe section 9b which are connected with each other, the arc-shaped section 9a is arched upwards, the straight pipe section 9b is vertically arranged, one end of the arc-shaped section 9a is communicated with the top of the hollow tower body 1, the other end of the arc-shaped section is communicated with the upper end of the straight pipe section 9b, and the bottom of the straight pipe section 9b is communicated with an air inlet of the fan 10.

The top of the hollow tower body 1 is provided with an upright cone-shaped upper cone part 1a, the spray assembly is arranged in the inner cavity part of the upper cone part 1a, the upper port of the upper cone part 1a is communicated with the arc-shaped section 9a of the ventilation pipe 9, and the upper cone part 1a can enable air flow to gather at the orifice of the arc-shaped section 9a of the ventilation pipe 9.

The foregoing is a preferred embodiment of the present utility model, and various changes and modifications may be made therein by those skilled in the art without departing from the general inventive concept, and such changes and modifications should be considered as falling within the scope of the present utility model as defined in the appended claims.

Claims

1. A flue gas cleaning system, comprising:

the hollow tower body (1) is fixedly arranged and provided with a cavity which is penetrated up and down, and the lower part of the side wall of the hollow tower body is communicated with a flue gas input pipe (6) for introducing flue gas into the bottom area of the inner cavity of the hollow tower body (1);

the spraying assembly is arranged in the upper area of the inner cavity of the hollow tower body (1), and the spraying end of the spraying assembly is downward arranged;

the screen assembly comprises a plurality of layers of screens (8) which are sequentially arranged at intervals from top to bottom, and further comprises a central supporting rod (7) for fixedly connecting all the screens (8) in series, wherein the screen (8) at the lowest position is fixed at the bottom of the inner cavity of the hollow tower body (1), and the screen (8) at the highest position is positioned under the spraying assembly;

the air blower (10), air blower (10) is provided with ventilation pipe (9), and the suction end of air blower (10) is connected with the top of hollow tower body (1) through ventilation pipe (9).

2. The flue gas cleaning system of claim 1, wherein the spray assembly comprises:

a solution input pipe (2) for receiving a chemical solution which chemically reacts with the flue gas;

the liquid flow pipe (3) is positioned in the upper area of the inner cavity of the hollow tower body (1), and the solution input pipe (2) penetrates through the side wall of the hollow tower body (1) from outside to inside and is communicated with the liquid flow pipe (3);

and a plurality of spray heads (4) which are communicated with the fluid flow pipe (3) and are positioned at the lower side of the fluid flow pipe (3) and spray chemical solution downwards, wherein the spray heads (4) are positioned in the inner cavity of the hollow tower body (1).

3. A flue gas cleaning system according to claim 2, wherein the top outer surface of the hollow tower body (1) is fixed with an input pipe support (5), and the solution input pipe (2) is connected with the input pipe support (5) in a penetrating way.

4. A flue gas cleaning system according to claim 2, wherein the bottom of the hollow tower (1) is provided with a recovery nozzle (1 c) in communication with a liquid recovery line.

5. A flue gas cleaning system according to claim 1, wherein the ventilation pipe (9) comprises an arc-shaped section (9 a) and a straight pipe section (9 b) which are connected with each other, the arc-shaped section (9 a) is arched upwards, the straight pipe section (9 b) is vertically arranged, one end of the arc-shaped section (9 a) is connected with the top of the hollow tower body (1), the other end of the arc-shaped section is connected with the upper end of the straight pipe section (9 b), and the bottom of the straight pipe section (9 b) is connected with the air inlet of the fan (10).

6. A flue gas cleaning system according to claim 5, wherein the top of the hollow tower body (1) is provided as an upright truncated cone-shaped upper conical portion (1 a), the spray assembly is provided in the inner cavity portion of the upper conical portion (1 a), and the upper port of the upper conical portion (1 a) is communicated with the arc-shaped section (9 a) of the ventilation pipe (9).

7. A flue gas cleaning system according to claim 4, wherein the bottom of the hollow tower body (1) is formed as an inverted truncated cone-shaped lower conical portion (1 b), and the recovery nozzle (1 c) is provided at the lower end of the lower conical portion (1 b).

8. A flue gas cleaning system according to claim 2, wherein the axis of the liquid flow tube (3) forms a horizontal plane, and all the spray heads (4) are arranged at equal heights.

9. A flue gas cleaning system according to any one of claims 1 to 8, wherein: the central supporting rod (7) is fixedly connected with the central positions of all the screens (8) in series.