A flue gas treatment system

Abstract

The utility model discloses a flue gas treatment system belongs to the fire non -ferrous smelting process environmental protection technical field. Including venturi dust collector and cloud type dust collector, the venturi dust collector export is through the pipeline with the cloud type dust collector's cloud mist generator end intercommunication, and the underflow of cloud type dust collector's underflow pool is through the underground pipeline with the venturi big jar intercommunication, and the cloud type dust collector's cloud type dust collector device export is through the pipeline with the venturi fan intercommunication, and the venturi fan export is with the outside intercommunication. The utility model discloses can carry out flue gas secondary purification, aims at further reducing the pollutant content in the flue gas after being treated by the venturi dust collector, realizes more efficient purification effect, to satisfy the increasingly strict environmental protection emission standard.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection technology in pyrometallurgical non-ferrous smelting processes, specifically to a flue gas treatment system. Background Technology

[0002] After sintering, lead-zinc sulfide concentrate in the sintering workshop generates a large amount of flue gas containing submicron particles when passing through the cooling cylinder. Its characteristics are as follows: (1) High temperature, the flue gas temperature reaching the cylinder can reach over 200℃; (2) Complex flue gas and particle composition, the flue gas contains heavy metal elements such as lead, zinc, and copper, and the particle composition is mainly zinc oxide, zinc sulfide, and lead oxide; (3) The flue gas carries a large amount of soluble salts, which crystallize and precipitate in the pipeline, further increasing the concentration of particulate matter in the flue gas; (4) Small particle size, with a diameter of less than 1.0μm. The flue gas in the sintering cooling cylinder has a high temperature, complex composition, and small particle size. The Venturi dust collector in the workshop is difficult to treat these flue gases more efficiently, making it difficult to achieve long-term stable emission standards. Summary of the Invention

[0003] The purpose of this invention is to provide a flue gas treatment system capable of secondary purification of flue gas, aiming to further reduce the pollutant content in the flue gas after treatment by a Venturi scrubber, achieving a more efficient purification effect to meet increasingly stringent environmental emission standards. This solves the problems existing in the prior art.

[0004] The technical solution adopted in this utility model is as follows:

[0005] A flue gas treatment system includes a Venturi dust collector and a cloud dust collector. The outlet of the Venturi dust collector is connected to the cloud generator end of the cloud dust collector via a pipeline. The underflow outlet of the underflow pool of the cloud dust collector is connected to the Venturi tank via an underground pipeline. The outlet of the cloud dust collector's cloud dust collection device is connected to a Venturi fan via a pipeline. The outlet of the Venturi fan is connected to the outside.

[0006] The outlet of the Venturi can is connected to the cooling cylinder.

[0007] The connecting pipe between the Venturi dust collector and the cloud generator is a fiberglass pipe.

[0008] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0009] This utility model, after being equipped with a dust removal device, has extremely high dust removal efficiency, achieving a total dust removal efficiency of over 99%. The particulate matter outlet concentration can reach below the latest ultra-low emission standard of 10mg / m³. It can efficiently capture submicron-sized particulate matter that is difficult to remove with a Venturi dust collector, effectively reducing particulate matter emissions in flue gas. It can also remove heavy metal elements and soluble salts and other pollutants in flue gas to a certain extent.

[0010] The cloud-type dust collector added in this invention is relatively simple in design and occupies a small area. It can be flexibly modified and installed according to the operating conditions and site conditions of existing Venturi dust collectors, resulting in relatively low investment costs. It also features low energy consumption during operation and convenient maintenance, further reducing operating costs.

[0011] In summary, this utility model can perform secondary purification of flue gas, aiming to further reduce the pollutant content in the flue gas after treatment by the Venturi dust collector, achieve a more efficient purification effect, and meet increasingly stringent environmental emission standards. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0014] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0015] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example

[0016] like Figure 1This embodiment provides a flue gas treatment system, including a Venturi scrubber and a cloud-type scrubber. The outlet of the Venturi scrubber is connected to the cloud generator end of the cloud-type scrubber via a fiberglass pipe. Particulate matter not properly treated by the Venturi scrubber undergoes secondary dust removal via the cloud-type scrubber, achieving stable and compliant flue gas emissions. The underflow outlet of the cloud-type scrubber's underflow tank is connected to a large Venturi tank via an underground pipe. The outlet of the large Venturi tank is connected to a cooling cylinder. The large Venturi tank receives the underflow slurry separated by the Venturi scrubber, and the underflow slurry generated by the cloud-type scrubber is also pumped into the large Venturi tank via an underground pipe. All slurry is recirculated into the cooling cylinder for cooling water supply. Throughout the process, no pollutants are discharged externally. The outlet of the cloud-type scrubber's dust collection device is connected to a Venturi fan via a pipe, and the Venturi fan outlet is connected to the outside environment.

[0017] The working principle of this utility model is to install a cloud-type dust collector before the crushing tower in the sintering workshop, thereby changing the routing of the Venturi dust collector's pipeline. (See attached diagram) Figure 1 As shown, the cooling cylinder outlet pipe extends to the cloud generator end after passing through the Venturi dust collector, and an underground pipe is installed at the underflow outlet of the cloud dust collector to pump the underflow into the Venturi tank. The entire treatment process maximizes flue gas treatment, thereby reducing solid and liquid pollutant emissions and maximizing resource utilization.

Claims

1. A flue gas treatment system, comprising a Venturi scrubber and a cloud-type scrubber, characterized in that, The outlet of the Venturi dust collector is connected to the cloud generator end of the cloud dust collector through a pipeline. The underflow outlet of the underflow pool of the cloud dust collector is connected to the Venturi tank through an underground pipeline. The outlet of the cloud dust collector's cloud dust removal device is connected to the Venturi fan through a pipeline. The outlet of the Venturi fan is connected to the outside.

2. The flue gas treatment system according to claim 1, characterized in that: The outlet of the Venturi can is connected to the cooling cylinder.

3. The flue gas treatment system according to claim 1, characterized in that: The connecting pipe between the Venturi dust collector and the cloud generator is a fiberglass pipe.

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