Waste gas purification treatment device for environmental protection engineering

Abstract

The waste gas purification treatment device comprises a dust remover, an outlet of the dust remover is connected with an induced draft fan, an air outlet end of the induced draft fan is connected with a desulfurizing tower, and a purified gas outlet at the top end of the desulfurizing tower is connected with a chimney; a spray thrower is mounted in the desulfurization tower, and a circulating pump is connected and mounted between the bottom of the desulfurization tower and the spray thrower; the bottom of the desulfurizing tower is connected with a slurry pump through a pipeline, an outlet of the slurry pump is connected with a belt filter, the regulating reservoir is connected with a make-up pump through a pipeline, and an outlet of the make-up pump is communicated with the desulfurizing tower; waste gas in the desulfurization tower is in full contact with a solution containing a desulfurizer sprayed into mist, the treatment rate of the sulfur-containing waste gas is greatly improved, waste residues generated by reaction of the desulfurizer and sulfide in the waste gas are filtered by slag slurry in the desulfurization tower through a belt filter and then are discharged for further treatment, the influence of sulfur-containing substances on the environment is greatly reduced, and the treatment efficiency of the sulfur-containing waste gas is improved. And the treated waste gas reaches the standard of being discharged to the atmosphere.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection engineering equipment, and in particular to a waste gas purification and treatment device for environmental protection engineering. Background Art

[0002] Environmental protection projects refer to projects specifically made for environmental protection. Due to industrial development leading to environmental pollution, environmental pollution problems are solved through the organized activities of a group of people based on a certain set of envisioned goals, application of relevant scientific knowledge and technical means. The content of environmental protection projects mainly includes air pollution prevention and control projects, water pollution prevention and control projects, solid waste treatment and utilization projects, and noise control projects. At present, my country's heavy chemical industry, which is mainly based on resources and energy, has developed rapidly and has become the world's largest steel, cement, and coal country. In the process of burning petroleum and coal, sulfur dioxide and nitrogen oxides form acid rain and other secondary pollution, which have seriously affected people's lives. Therefore, the purification of flue gas is particularly important. If it is not treated, it will inevitably have a bad impact on the environment. At present, the country pays more and more attention to the treatment of sulfur-containing waste gas in the field of environmental protection, especially in national thermal power plants. However, there is a problem of low treatment rate of sulfur-containing waste gas in the existing technology. The sulfur-containing waste gas with low treatment rate does not meet the emission standards, which will have adverse effects on human health. Utility Model Content

[0003] The purpose of the utility model is to provide a waste gas purification treatment device for environmental protection engineering to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an exhaust gas purification and treatment device for environmental protection engineering, which includes a dust collector, the outlet of the dust collector is connected to an induced draft fan, the air outlet of the induced draft fan is connected to a desulfurization tower, and the purified gas outlet at the top of the desulfurization tower is connected to a chimney;

[0005] A sprayer is installed in the desulfurization tower, and a circulation pump is connected and installed between the bottom of the desulfurization tower and the sprayer;

[0006] The bottom of the desulfurization tower is connected to a slurry pump through a pipeline, and the outlet of the slurry pump is connected to a belt filter. The moisture of the slurry at the bottom of the desulfurization tower after solid-liquid separation by the belt filter is connected to a regulating tank through a pipeline, and the regulating tank is connected to a water supply pump through a pipeline, and the outlet of the water supply pump is connected to the desulfurization tower.

[0007] Preferably, the circulation pump is also connected to a desulfurizing agent filling device, and the desulfurizing agent filling device is a screw conveyor for filling the desulfurizing agent into the circulation pump.

[0008] Preferably, the dust collector is an electrostatic dust collector or a bag dust collector.

[0009] Beneficial effect: Compared with the prior art, the beneficial effect of the utility model is that the exhaust gas in the desulfurization tower is fully in contact with the desulfurization agent solution sprayed in a mist state, which greatly improves the treatment rate of sulfur-containing exhaust gas. The waste slag produced by the reaction of the desulfurizer with the sulfide in the exhaust gas is filtered by the slag slurry in the desulfurization tower through a belt filter and discharged for further treatment, which greatly reduces the impact of sulfur-containing substances on the environment. The treated exhaust gas meets the standard for discharge into the atmosphere. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The utility model is a schematic diagram of the overall structure of a waste gas purification and treatment device for environmental protection engineering.

[0011] In the attached figure: 1-dust collector, 2-induced draft fan, 3-desulfurization tower, 4-chimney, 5-slurry pump, 6-belt filter, 7-regulating tank, 8-water feed pump, 9-circulating pump, 10-sprinkler, 11-desulfurization agent filling device. DETAILED DESCRIPTION

[0012] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0013] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0014] Example

[0015] Please refer to the drawings of the specification. In the embodiment of the utility model, an exhaust gas purification device for environmental protection engineering includes a dust collector 1, which is an electrostatic dust collector or a bag dust collector. The outlet of the dust collector 1 is connected to an induced draft fan 2, and the air outlet of the induced draft fan 2 is connected to a desulfurization tower 3. The purified gas outlet at the top of the desulfurization tower 3 is connected to a chimney 4;

[0016] A sprayer 10 is installed in the desulfurization tower 3, and a circulation pump 9 is connected and installed between the bottom of the desulfurization tower 3 and the sprayer 10. The circulation pump 9 is also connected to a desulfurization agent filling device 11. The desulfurization agent filling device 11 is a screw conveyor that fills the desulfurization agent into the circulation pump 9;

[0017] The bottom of the desulfurization tower 3 is connected to a slurry pump 5 through a pipeline, and the outlet of the slurry pump 5 is connected to a belt filter 6. The water of the slurry at the bottom of the desulfurization tower 3 after solid-liquid separation by the belt filter 6 is connected to a regulating tank 7 through a pipeline, and the regulating tank 7 is connected to a water supply pump 8 through a pipeline, and the outlet of the water supply pump 8 is connected to the desulfurization tower 3.

[0018] Usage process:

[0019] During use, the exhaust gas enters the desulfurization tower 3 after pre-treatment and dust removal by the dust collector 1 to fully react with the desulfurizer and remove harmful sulfur-containing gases in the exhaust gas. The solid waste residue produced by the reaction sinks to the bottom of the desulfurization tower 3 and is transported to the belt filter 6 by the slurry pump 5 for solid-liquid separation and then transported out. The sprayer 10 in the desulfurization tower 3 is connected to the circulation pump 9 to ensure continuous spraying. The desulfurizer filling device 11 regularly fills the desulfurizer. The exhaust gas treated by the desulfurization tower 3 is discharged from the chimney 4.

[0020] In the above process, the exhaust gas in the desulfurization tower is fully in contact with the desulfurization agent solution sprayed in a mist state, which greatly improves the treatment rate of the sulfur-containing exhaust gas. The waste slag produced by the reaction of the desulfurizer with the sulfide in the exhaust gas is filtered by the slag slurry in the desulfurization tower through a belt filter and discharged for further treatment, which greatly reduces the impact of sulfur-containing substances on the environment. The treated exhaust gas meets the standard for discharge into the atmosphere. The present application has a simple structure, strong practicality, and simple operation, which is worthy of promotion.

[0021] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0022] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

Claims

1. A waste gas purification device for environmental protection engineering, characterized in that: It comprises a dust collector (1), the outlet of the dust collector (1) is connected to an induced draft fan (2), the air outlet end of the induced draft fan (2) is connected to a desulfurization tower (3), and the purified gas outlet at the top of the desulfurization tower (3) is connected to a chimney (4); A sprayer (10) is installed in the desulfurization tower (3), and a circulation pump (9) is connected and installed between the bottom of the desulfurization tower (3) and the sprayer (10); The bottom of the desulfurization tower (3) is connected to a slurry pump (5) via a pipeline, and the outlet of the slurry pump (5) is connected to a belt filter (6). The slurry at the bottom of the desulfurization tower (3) is connected to a regulating tank (7) through a pipeline after solid-liquid separation by the belt filter (6). The regulating tank (7) is connected to a water supply pump (8) via a pipeline, and the outlet of the water supply pump (8) is connected to the desulfurization tower (3).

2. The waste gas purification device for environmental protection engineering according to claim 1 is characterized in that: The circulation pump (9) is also connected to a desulfurizing agent filling device (11), and the desulfurizing agent filling device (11) is a screw conveyor for filling the desulfurizing agent into the circulation pump (9).

3. The waste gas purification device for environmental protection engineering according to claim 1 is characterized in that: The dust collector (1) is an electrostatic dust collector or a bag dust collector.

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