A device for treating sulfur dioxide in an acid purification system

Abstract

The utility model relates to a device for treating and purifying and dispersing sulfur dioxide, comprising: a drying tower, the drying tower side is equipped with the main pipeline that communicates with it, be equipped with air valve on the main pipeline, the main pipeline is equipped with a plurality of branch pipes away from the drying tower side, branch pipe other end is connected with sulfur dioxide analysis container, be equipped with control unit on the branch pipe, control unit is used for controlling branch pipe to open or close, control unit includes: pressure transmitter, pressure transmitter is used for detecting the negative pressure value of branch pipe, pressure transmitter side is equipped with electric valve, the utility model forms the pipeline negative pressure through air valve, extracts the sulfur dioxide gas that analyzes from sulfur dioxide analysis container, carries out acidification treatment to the sulfur dioxide gas that extracts through the drying tower, effectively avoided sulfur dioxide gas to escape and pollute the environment, and harm the health of the operator's body, greatly improved the working environment.

Description

Technical Field

[0001] This utility model relates to the field of sulfuric acid production from smelting flue gas in the mining and smelting industry, and in particular to a device for treating and purifying scattered sulfur dioxide emitted during sulfuric acid production. Background Technology

[0002] With the rapid development of industry and the continuous expansion of urban areas, the environment on which we depend for survival is suffering from increasingly serious pollution. In particular, the waste gas generated by industries such as metallurgy, chemical industry, and mining has potential hazards. In order to ensure the health of the on-site environment, it is necessary to collect and treat the flue gas. In the process of flue gas to produce sulfuric acid, it is necessary to collect the flue gas as much as possible and put it into the system for treatment. SO2 reacts with O2 to produce SO3, which is absorbed and sulfuric acid is produced.

[0003] Sulfur dioxide is a toxic and harmful gas. When its concentration in the air exceeds 5 ppm / Nm3, people can clearly feel discomfort. During the flue gas acid production process, a large amount of sulfur dioxide dissolves in the dilute acid, which is released during production and transportation, causing sulfur dioxide to escape and pollute the environment and endanger the health of operators. To solve the above problems, a device for treating and purifying sulfur dioxide emitted during acid production is proposed. Summary of the Invention

[0004] To address the aforementioned problems, an apparatus for treating and purifying sulfur dioxide emitted during acid production is provided.

[0005] The technical solution of this utility model is: a device for treating and purifying sulfur dioxide emitted during acid production, comprising: a drying tower, a main pipeline connected to one side of the drying tower, an air valve on the main pipeline for creating negative pressure on the main pipeline; several branch pipelines on the side of the main pipeline away from the drying tower, the other end of each branch pipeline connected to a sulfur dioxide desorption container; a control component on each branch pipeline for controlling the opening or closing of the branch pipeline; the control component includes: a pressure transmitter for detecting the negative pressure value of the branch pipeline, an electric valve on one side of the pressure transmitter, the pressure transmitter being signal-connected to the electric valve, and automatically opening the electric valve when the negative pressure value of the branch pipeline exceeds a threshold.

[0006] Furthermore, the sulfur dioxide desorption container includes: a supernatant tank, a waste acid tank, and an emergency pool.

[0007] The beneficial effects of this utility model are as follows: This utility model has a simple structure and is easy to use. It forms a negative pressure in the pipeline through an air valve. When the negative pressure reaches the set value, the pressure transmitter controls the electric valve to open and extract the sulfur dioxide gas extracted from the sulfur dioxide desorption container. The extracted sulfur dioxide gas is then acidified through a drying tower, which effectively prevents the sulfur dioxide gas from escaping and polluting the environment and harming the health of the operators, and greatly improves the working environment. Attached Figure Description

[0008] Figure 1 This is a schematic diagram illustrating the working principle of this utility model;

[0009] The components include: 1. Drying tower; 2. Air valve; 3. Main pipeline; 4. Branch pipeline; 5. Pressure transmitter; 6. Electric valve; 7. Emergency tank; 8. Sludge acid tank; 9. Supernatant tank. Detailed Implementation

[0010] Please refer to Figure 1 An apparatus for treating and purifying sulfur dioxide emitted during acid production includes: a drying tower 1, a main pipe 3 connected to one side of the drying tower 1, an air valve 2 on the main pipe 3 for creating negative pressure on the main pipe 3; several branch pipes 4 on the side of the main pipe 3 away from the drying tower 1, the other end of each branch pipe 4 connected to a sulfur dioxide desorption container; a control component on each branch pipe 4 for controlling the opening or closing of the branch pipe 4; the control component includes: a pressure transmitter 5 for detecting the negative pressure value of the branch pipe 4, an electric valve 6 on one side of the pressure transmitter 5, the pressure transmitter 5 being signal-connected to the electric valve 6, and automatically opening the electric valve 6 when the negative pressure value of the branch pipe 4 exceeds a threshold.

[0011] In this embodiment, the sulfur dioxide desorption container includes: a supernatant tank 9, a waste acid tank 8, and an emergency pool 7.

[0012] The beneficial effects of this utility model are as follows: This utility model has a simple structure and is easy to use. A negative pressure is formed in the pipeline through the air valve 2. When the negative pressure reaches the set value, the pressure transmitter 5 controls the electric valve 6 to open, and extract the sulfur dioxide gas extracted from the sulfur dioxide desorption container. The extracted sulfur dioxide gas is then acidified through the drying tower 1, which effectively prevents the sulfur dioxide gas from escaping and polluting the environment and harming the health of the operators, and greatly improves the working environment.

Claims

1. An apparatus for treating sulfur dioxide emitted during acid production and purification, comprising: A drying tower, characterized in that a main pipeline is provided on one side of the drying tower and connected thereto, and an air valve is provided on the main pipeline for creating negative pressure on the main pipeline; several branch pipelines are provided on the side of the main pipeline away from the drying tower, and the other end of the branch pipelines is connected to a sulfur dioxide desorption container; a control component is provided on the branch pipelines for controlling the opening or closing of the branch pipelines; the control component includes: a pressure transmitter for detecting the negative pressure value of the branch pipelines, and an electric valve is provided on one side of the pressure transmitter, and the pressure transmitter is signal-connected to the electric valve.

2. The apparatus for treating and purifying sulfur dioxide emitted during acid production according to claim 1, characterized in that, The sulfur dioxide desorption container includes: a supernatant tank, a waste acid tank, and an emergency pool.

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