Sodium cyanide hydrogen-containing tail gas liquid ammonia device

Abstract

The utility model discloses a sodium cyanide hydrogen-containing tail gas liquid ammonia device, which relates to the technical field of tail gas treatment, and comprises a first filter tank and a second filter tank, an input pipeline is arranged above the first filter tank and the second filter tank, a first electric control valve is arranged between the input pipeline and the first filter tank, and a second electric control valve is arranged above the first electric control valve. An input pipeline is arranged below the first filtering tank, a second electric control valve is arranged between the input pipeline and the second filtering tank, an output pipeline is arranged below the first filtering tank and the second filtering tank, a third electric control valve is arranged between the output pipeline and the first filtering tank, and a fourth electric control valve is arranged between the output pipeline and the second filtering tank; filtering sections are arranged in the middles of the interiors of the first filtering tank and the second filtering tank, a first-layer filtering plate and a second-layer filtering plate are arranged at the upper end and the lower end of the interior of each filtering section respectively, by improving the technology, recycling of by-products can be achieved, for example, hydrogen-containing tail gas is converted into liquid ammonia, and therefore resource waste is reduced.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas treatment technology, specifically to a sodium cyanide hydrogen-containing exhaust gas liquid ammonia device. Background Technology

[0002] Sodium cyanide, as an important chemical raw material, is widely used in pharmaceuticals, pesticides, dyes, metallurgy, and other industries. However, traditional sodium cyanide production processes suffer from numerous problems, such as low production efficiency, high energy consumption, and severe environmental pollution. With increasing global demands for environmental protection and sustainable development, optimizing sodium cyanide production processes has become an inevitable trend in the industry. Against this backdrop, the sodium cyanide continuous absorption process optimization project has emerged. During continuous sodium cyanide absorption, a large amount of hydrogen-containing exhaust gas is generated. Currently, advanced treatment methods include pressure swing adsorption (PSA) and cryogenic separation technologies. Commonly used cryogenic separation exhaust gas filtration devices are typically small devices installed on pipelines. These small devices have low filtration efficiency for exhaust gas, and maintenance and replacement are cumbersome when pipeline-installed equipment becomes clogged. Utility Model Content

[0003] The purpose of this utility model is to provide a sodium cyanide hydrogen-containing tail gas liquid ammonia device to solve the problems mentioned in the background art, which are usually small devices installed on pipelines. Small processing devices have low filtration efficiency for tail gas, and maintenance and replacement operations are cumbersome when the devices installed on pipelines become blocked.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a sodium cyanide hydrogen-containing tail gas liquid ammonia device, comprising a No. 1 filter tank and a No. 2 filter tank. An input pipe is provided above the No. 1 filter tank and the No. 2 filter tank. A No. 1 electrically controlled valve is provided between the input pipe and the No. 1 filter tank. A No. 2 electrically controlled valve is provided between the input pipe and the No. 2 filter tank. An output pipe is provided below the No. 1 filter tank and the No. 2 filter tank. A No. 3 electrically controlled valve is provided between the output pipe and the No. 1 filter tank. A No. 4 electrically controlled valve is provided between the output pipe and the No. 2 filter tank. A filter section is provided in the middle of the interior of the No. 1 filter tank and the No. 2 filter tank. A filter plate is provided at the upper and lower ends of the filter section, respectively.

[0005] Preferably, both the first filter tank and the second filter tank include an upper filter cover and a lower filter cover. The first filter tank and the second filter tank are connected to the input pipe through the upper filter cover, and the first filter tank and the second filter tank are connected to the output pipe through the lower filter cover. The filter section is connected between the upper filter cover and the lower filter cover through a connecting flange.

[0006] Preferably, the filter section has an installation edge at the middle position inside, the first layer filter plate is disposed at the upper end of the installation edge, and the second layer filter plate is disposed at the lower end of the installation edge.

[0007] Preferably, the outer sides of both the first and second filter plates are connected to the mounting edge by bolts with a fixing edge.

[0008] Preferably, both the input pipe and the output pipe are provided with connecting flanges at their outer ends.

[0009] Compared with the prior art, the beneficial effects of this utility model are: it replaces the commonly used small cryogenic separation exhaust filter device installed on the pipeline, and designs two large filter devices arranged in parallel to improve the filtration efficiency of the exhaust gas. When the filter device becomes clogged, the other filter device can be maintained or replaced by switching the two filter devices. Through process improvement, by-products can be recycled, such as converting hydrogen-containing exhaust gas into liquid ammonia, which can be reused as raw material for sodium cyanide production, thereby reducing resource waste. Attached Figure Description

[0010] Figure 1 This is an isometric view of the main structure of this utility model;

[0011] Figure 2 This is an isometric sectional view of the main structure of this utility model;

[0012] Figure 3 This is a front sectional view of the main structure of this utility model;

[0013] Figure 4 This is a front view schematic diagram of the main structure of this utility model;

[0014] Figure 5 This is a left-side view of the main structure of this utility model.

[0015] In the diagram: 1-Filter tank No. 1, 2-Filter tank No. 2, 3-Input pipe, 4-Electronic control valve No. 1, 5-Electronic control valve No. 2, 6-Output pipe, 7-Electronic control valve No. 3, 8-Electronic control valve No. 3, 9-Filter section, 10-First layer filter plate, 11-Second layer filter plate, 12-Upper filter cover, 13-Lower filter cover, 14-Mounting edge, 15-Fixing edge, 16-Connecting flange. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-5 This utility model provides a sodium cyanide hydrogen-containing tail gas liquid ammonia device, including a first filter tank 1 and a second filter tank 2. An input pipe 3 is provided above the first filter tank 1 and the second filter tank 2. A first electric control valve 4 is provided between the input pipe 3 and the first filter tank 1. A second electric control valve 5 is provided between the input pipe 3 and the second filter tank 2. An output pipe 6 is provided below the first filter tank 1 and the second filter tank 2. A third electric control valve 7 is provided between the output pipe 6 and the first filter tank 1. A fourth electric control valve 8 is provided between the output pipe 6 and the second filter tank 2. A filter section 9 is provided in the middle of the interior of the first filter tank 1 and the second filter tank 2. A filter plate 10 and a filter plate 11 are respectively provided at the upper and lower ends of the filter section 9.

[0018] In use, the liquid ammonia to be filtered is input into filter tank 1 and filter tank 2 via input pipe 3. Filter sections 9 are installed inside filter tanks 1 and 2, with a first filter plate 10 and a second filter plate 11 inside each section. The liquid ammonia is filtered through the first and second filter plates 10 and 11. The filtered liquid ammonia is then output through output pipe 6. When maintenance is required on filter tank 1, the first and third solenoid valves 4 and 7 are closed, and the second and fourth solenoid valves 5 and 8 are opened. Liquid ammonia is fed into filter tank 2 for filtration, thereby performing maintenance work on filter tank 1. When maintenance is required on filter tank 2, open solenoid valve 4 and solenoid valve 7, and close solenoid valve 5 and solenoid valve 8. The liquid ammonia to be filtered is fed into filter tank 1 for filtration, thereby performing maintenance work on filter tank 2. During maintenance, the corresponding filter sections 9 in filter tank 1 and filter tank 2 are disassembled, and the first layer filter plate 10 and the second layer filter plate 11 inside filter section 9 are replaced or maintained.

[0019] Both the No. 1 filter tank 1 and the No. 2 filter tank 2 include an upper filter cover 12 and a lower filter cover 13. The No. 1 filter tank 1 and the No. 2 filter tank 2 are connected to the input pipe 3 through the upper filter cover 12, and the No. 1 filter tank 1 and the No. 2 filter tank 2 are connected to the output pipe 6 through the lower filter cover 13. The filter section 9 is connected between the upper filter cover 12 and the lower filter cover 13 through a connecting flange. The No. 1 filter tank 1 and the No. 2 filter tank 2 are connected to the input pipe 3 and the output pipe 6 through the upper filter cover 12 and the lower filter cover 13, respectively. The upper filter cover 12 and the lower filter cover 13 connect the small-diameter input pipe 3 and the output pipe 6 to the large-diameter No. 1 filter tank 1 and the No. 2 filter tank 2.

[0020] An installation edge 14 is provided in the middle of the interior of the filter section 9. The first layer filter plate 10 is disposed at the upper end of the installation edge 14, and the second layer filter plate 11 is disposed at the lower end of the installation edge 14. The first layer filter plate 10 and the second layer filter plate 11 are installed by setting the installation edge 14, and the first layer filter plate 10 and the second layer filter plate 11 are fixedly disposed inside the filter section 9.

[0021] The outer sides of the first-layer filter plate 10 and the second-layer filter plate 11 are all connected to the mounting edge 14 by bolts with fixing edges 15, which fix the first-layer filter plate 10 and the second-layer filter plate 11 to the mounting edge 14.

[0022] Both the input pipe 3 and the output pipe 6 are provided with connecting flanges 16 on their outer ends. The input pipe 3 is connected to the liquid ammonia treatment device and the output pipe 6 is connected to the discharge pipe through the connecting flanges 16.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sodium cyanide hydrogen-containing tail gas liquid ammonia plant characterized by: The utility model provides a filter device, including filter tank (1) and filter tank (2), the top of filter tank (1) and filter tank (2) is equipped with input pipeline (3), and the input pipeline (3) is equipped with no.

2. The apparatus for producing liquid ammonia from sodium cyanide hydrogen-containing tail gas according to claim 1, characterized in that: The utility model provides a filter device, including filter tank (1) and filter tank (2), the top of filter tank (1) and filter tank (2) is equipped with input pipeline (3), and the input pipeline (3) is equipped with no.

3. The apparatus for producing liquid ammonia from sodium cyanide hydrogen-containing tail gas according to claim 1, characterized in that: The utility model provides a filter device, including filter tank (1) and filter tank (2), the top of filter tank (1) and filter tank (2) is equipped with input pipeline (3), and the input pipeline (3) is equipped with no.

4. The apparatus for producing liquid ammonia from sodium cyanide hydrogen-containing tail gas according to claim 3, characterized in that: The utility model provides a filter device, including filter tank (1) and filter tank (2), the top of filter tank (1) and filter tank (2) is equipped with input pipeline (3), and the input pipeline (3) is equipped with no.

5. The apparatus for producing liquid ammonia from sodium cyanide hydrogen-containing tail gas according to claim 1, characterized in that: The utility model provides a filter device, including filter tank (1) and filter tank (2), the top of filter tank (1) and filter tank (2) is equipped with input pipeline (3), and the input pipeline (3) is equipped with no.

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