Hydrochloric acid waste liquid recovery tail gas purification treatment device

Abstract

The utility model discloses a hydrochloric acid waste liquid recovery tail gas purification treatment device which comprises a base, a hydrochloric acid waste liquid recovery tail gas purification mechanism is arranged on the right side of the top of the base, and a collecting tank is arranged on the top of the base and located on the left side of the hydrochloric acid waste liquid recovery tail gas purification mechanism. The right side of the top of the collecting tank communicates with a second gas guide pipe, and first valves are fixedly installed in the first gas guide pipe and the second gas guide pipe. According to the hydrochloric acid waste liquid recovery tail gas purification device, the base is arranged for placing and installing the hydrochloric acid waste liquid recovery tail gas purification mechanism and the collection tank, hydrochloric acid waste liquid generated during production is collected through the collection tank, the installation box and the sealing cover are used for containing an alkaline solution for neutralizing hydrochloric acid tail gas, and meanwhile the tail gas is sealed; the tail gas reacts with an alkaline solution in the mounting box, so that the hydrochloric acid tail gas is treated.

Description

Technical Field

[0001] This utility model relates to the technical field of hydrochloric acid recovery equipment, specifically to a device for purifying and treating the exhaust gas of hydrochloric acid waste liquid recovery. Background Technology

[0002] Due to the diversity of raw materials and products and the complexity of the production process, tens of thousands of chemical production processes have been developed in the production of chemical products.

[0003] Hydrochloric acid is often generated from the catalysis of raw materials or as a byproduct during the production of chemical products. This results in the production of hydrochloric acid waste liquid. To meet environmental protection requirements, the generated hydrochloric acid is often recycled. A hydrochloric acid tail gas purification and treatment device, disclosed in announcement number CN221788736U, uses a suction fan to draw hydrochloric acid tail gas into a treatment chamber, allowing it to come into contact with clean water within the chamber. This dissolves the hydrochloric acid in the tail gas. The clean water is then output from the bottom of the treatment chamber into a first water tank via an inlet pipe. A first and second water pump then spray the clean water from spray nozzles. The sprayed clean water provides secondary contact with some of the hydrochloric acid tail gas that did not dissolve in the clean water due to the bursting of air bubbles, ensuring complete dissolution of the hydrochloric acid in the tail gas. This ensures effective purification of the hydrochloric acid tail gas and achieves a more complete purification effect.

[0004] Although the above method can dissolve hydrochloric acid in water, the dissolution of hydrochloric acid is affected by temperature. In addition, hydrochloric acid is a volatile acid, and even if it is dissolved, it will still evaporate later, which cannot meet the purification treatment requirements. Utility Model Content

[0005] The purpose of this invention is to provide a device for purifying and treating the exhaust gas of hydrochloric acid waste liquid recovery, so as to solve the technical problem of low recovery rate of hydrochloric acid waste liquid recovery process affected by temperature.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A hydrochloric acid waste liquid recovery and tail gas purification treatment device includes a base, a hydrochloric acid waste liquid recovery and tail gas purification mechanism is provided on the right side of the top of the base, a collection tank is placed on the top of the base and to the left of the hydrochloric acid waste liquid recovery and tail gas purification mechanism, a first gas guide pipe is connected to the left side of the top of the collection tank, a second gas guide pipe is connected to the right side of the top of the collection tank, and a first valve is fixedly installed inside the first gas guide pipe and the second gas guide pipe.

[0008] The first valve includes a mounting box placed on top of the base. The top of the mounting box is provided with a sealing cover. Inside the mounting box and below the sealing cover, there is a mounting frame. A metal mesh is fixedly installed at the bottom of the mounting frame.

[0009] As a preferred embodiment of this utility model, a third air guide tube is interspersed inside the sealing cover. The third air guide tube passes through the metal mesh and the mounting bracket and extends to the bottom of the metal mesh. The left side of the third air guide tube is connected to the right side of the second air guide tube.

[0010] As a preferred embodiment of this utility model, an air pump is fixedly installed on the top of the sealing cover, and the left side of the air pump extends through to the bottom of the sealing cover.

[0011] As a further embodiment of this utility model, the inside of the sealing cap is connected to a filling hopper, and a third valve is fixedly installed inside the filling hopper.

[0012] As a further embodiment of this utility model, four first bolts are interspersed inside the sealing cover. The bottom of the first bolts penetrates into the interior of the mounting box and is connected to the mounting box by threads. A sealing gasket is fixedly installed on the top of the mounting box, and the top of the sealing gasket contacts the bottom of the sealing cover.

[0013] As a further embodiment of this utility model, four connecting brackets are fixedly installed at the bottom of the sealing cover, and connecting blocks are provided inside the connecting brackets. The bottom of the connecting blocks is fixedly connected to the top of the mounting bracket, and second bolts are interlaced inside the connecting brackets and connecting blocks.

[0014] As a further preferred embodiment of this utility model, the installation box has four limiting cavities inside, and limiting rods are inserted inside the limiting cavities. The top of the limiting rods is fixedly connected to the bottom of the sealing cover.

[0015] As a preferred embodiment of this utility model, a drain pipe is connected to the right side of the mounting box, and a second valve is fixedly installed inside the drain pipe.

[0016] Compared with the prior art, the hydrochloric acid waste liquid recovery and tail gas purification treatment device provided by this utility model has the following beneficial effects: The device uses a base to place and install the hydrochloric acid waste liquid recovery and tail gas purification mechanism and the collection tank. The collection tank is used to collect the hydrochloric acid waste liquid generated during production. The installation box and sealing cover are used to hold the alkaline solution for neutralizing the hydrochloric acid tail gas, while sealing the tail gas. The tail gas reacts with the alkaline solution inside the installation box, thereby achieving the treatment of the hydrochloric acid tail gas. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only examples of embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the mounting box in an embodiment of the present utility model;

[0020] Figure 3 This is a bottom view of the sealing cap in an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the collection tank in an embodiment of the present utility model;

[0022] Figure 5 This is a schematic diagram of the sealing cap and metal mesh in an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the structure of the metal mesh in an embodiment of this utility model.

[0024] Reference numerals: 1. Base; 2. Hydrochloric acid waste liquid recovery and tail gas purification mechanism; 201. Mounting box; 202. Sealing cover; 203. Vacuum pump; 204. Injection hopper; 205. First bolt; 206. Drain pipe; 207. Second valve; 208. Sealing gasket; 209. Limiting cavity; 210. Third air guide pipe; 211. Limiting rod; 212. Connecting frame; 213. Connecting block; 214. Metal mesh; 215. Mounting frame; 216. Second bolt; 217. Third valve; 3. Collection tank; 4. First air guide pipe; 5. First valve; 6. Second air guide pipe. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.

[0026] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of the present invention 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 the embodiments of the present invention.

[0027] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an integral connection, or a detachable connection; they can refer to the internal connection of two components; they can refer to a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present invention should be understood according to the specific circumstances.

[0028] See Figures 1-6 As shown in the figure, an embodiment of the present invention provides a hydrochloric acid waste liquid recovery and tail gas purification treatment device, including a base 1, a hydrochloric acid waste liquid recovery and tail gas purification mechanism 2 is provided on the right side of the top of the base 1, a collection tank 3 is placed on the top of the base 1 and on the left side of the hydrochloric acid waste liquid recovery and tail gas purification mechanism 2, a first gas guide pipe 4 is connected to the left side of the top of the collection tank 3, a second gas guide pipe 6 is connected to the right side of the top of the collection tank 3, and a first valve 5 is fixedly installed inside the first gas guide pipe 4 and the second gas guide pipe 6.

[0029] The first valve 5 includes a mounting box 201 placed on top of the base 1. A sealing cover 202 is provided on the top of the mounting box 201. A mounting frame 215 is provided inside the mounting box 201 and below the sealing cover 202. A metal mesh 214 is fixedly installed at the bottom of the mounting frame 215. The mounting frame 215 is used to install the metal mesh 214. The metal mesh 214 disperses the exhaust gas, increasing its contact with the alkaline solution inside the mounting box 201 and accelerating the neutralization of the acid.

[0030] In this embodiment of the invention, the metal mesh 214 may be made of Inconel 625 (Ni-Cr-Mo alloy), a material resistant to mixed acids and alkalis.

[0031] A third gas guide pipe 210 is interspersed inside the sealing cover 202. The third gas guide pipe 210 passes through the metal mesh 214 and the mounting bracket 215 and extends to the bottom of the metal mesh 214. The left side of the third gas guide pipe 210 is connected to the right side of the second gas guide pipe 6, so as to introduce the hydrochloric acid gas volatilized inside the collection tank 3 into the interior of the mounting box 201 for neutralization treatment.

[0032] A vacuum pump 203 is fixedly installed on the top of the sealing cover 202. The left side of the vacuum pump 203 extends to the bottom of the sealing cover 202. The vacuum pump 203 is used to discharge the neutralized gas inside the installation box 201, thereby creating a negative pressure inside the installation box 201, which allows the hydrochloric acid gas inside the collection tank 3 to enter the installation box 201 for neutralization.

[0033] The interior of the sealing cover 202 is connected to the injection hopper 204, and a third valve 217 is fixedly installed inside the injection hopper 204 to inject alkaline neutralizing liquid into the interior of the installation box 201 for neutralizing hydrochloric acid in the tail gas.

[0034] Four first bolts 205 are interspersed inside the sealing cover 202. The bottom of the first bolts 205 penetrates into the interior of the mounting box 201 and is connected to the mounting box 201 by threads. A sealing gasket 208 is fixedly installed on the top of the mounting box 201. The top of the sealing gasket 208 contacts the bottom of the sealing cover 202. The first bolts 205 are used to fix the connection between the sealing cover 202 and the mounting box 201. The sealing gasket 208 is used to increase the sealing performance of the connection between the mounting box 201 and the sealing cover 202.

[0035] Four connecting brackets 212 are fixedly installed at the bottom of the sealing cover 202. Connecting blocks 213 are provided inside the connecting brackets 212. The bottom of the connecting blocks 213 is fixedly connected to the top of the mounting bracket 215. Second bolts 216 are inserted inside the connecting brackets 212 and the connecting blocks 213. The mounting bracket 215 together with the metal mesh 214 is fixed to the bottom of the sealing cover 202 through the cooperation between the connecting brackets 212, the connecting blocks 213 and the second bolts 216, thereby realizing the dispersion of the exhaust gas and accelerating the contact reaction with the alkaline solution.

[0036] The mounting box 201 has four limiting cavities 209 inside. Limiting rods 211 are inserted into the limiting cavities 209. The top of the limiting rods 211 is fixedly connected to the bottom of the sealing cover 202 to limit the sealing cover 202. At the same time, the sealing cover 202 is supported when it is removed from the mounting box 201.

[0037] A drain pipe 206 is connected to the right side of the installation box 201. A second valve 207 is fixedly installed inside the drain pipe 206 so that the alkaline solution after exhaust gas treatment inside the installation box 201 can be discharged through the drain pipe 206.

[0038] In use, the collection tank 3 is placed on the left side of the base 1. The first gas guide pipe 4 is connected to the conduit discharged from the previous production process. At the same time, the second gas guide pipe 6 is connected to the left side of the third gas guide pipe 210. The first valve 5 and the third valve 217 are opened, and the alkaline liquid for neutralizing the tail gas is injected into the installation box 201 through the injection hopper 204. After the injection is completed, the third valve 217 is closed, and the waste liquid is sent to the inside of the collection tank 3 through the conduit. The vacuum pump 203 draws the hydrochloric acid waste gas generated inside into the installation box 201. The waste gas enters the installation box 201. The gas inside the installation box 201 flows upward under the obstruction and dispersion of the metal mesh 214, and reacts and neutralizes with the alkaline liquid inside the installation box 201. The gas after the reaction is discharged through the vacuum pump 203. After use, the waste liquid inside the installation box 201 is discharged through the drain pipe 206 by opening the second valve 207. The sealing cover 202, along with the metal mesh 214 and the mounting bracket 215, is removed from the inside of the installation box 201 by removing the first bolt 205. The second bolt 216 is pulled out, and the metal mesh 214 and the mounting bracket 215 are removed and cleaned.

[0039] The foregoing has shown and described the basic principles of the present invention. The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. The above embodiments and descriptions in the specification are only illustrative of the principles of the present invention. Any modifications, equivalent substitutions, and improvements made within the scope of the present invention without departing from the scope of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for purifying tail gas from a hydrochloric acid waste liquid recovery unit, characterized by: Includes a base (1), a hydrochloric acid waste liquid recovery tail gas purification mechanism (2) is provided on the right side of the top of the base (1), a collection tank (3) is placed on the top of the base (1) and on the left side of the hydrochloric acid waste liquid recovery tail gas purification mechanism (2), a first gas guide pipe (4) is connected to the left side of the top of the collection tank (3), a second gas guide pipe (6) is connected to the right side of the top of the collection tank (3), and a first valve (5) is fixedly installed inside the first gas guide pipe (4) and the second gas guide pipe (6). The first valve (5) includes a mounting box (201) placed on top of the base (1). A sealing cover (202) is provided on the top of the mounting box (201). A mounting bracket (215) is provided inside the mounting box (201) and below the sealing cover (202). A metal mesh (214) is fixedly installed at the bottom of the mounting bracket (215).

2. The device for purifying tail gas of hydrochloric acid waste liquid recovery according to claim 1, characterized in that: A third air guide tube (210) is inserted inside the sealing cover (202). The third air guide tube (210) passes through the metal mesh (214) and the mounting bracket (215) and extends to the bottom of the metal mesh (214). The left side of the third air guide tube (210) is connected to the right side of the second air guide tube (6).

3. The device for purifying tail gas of hydrochloric acid waste liquid recovery according to claim 1, characterized in that: An air extractor (203) is fixedly installed on the top of the sealing cover (202), and the left side of the air extractor (203) extends to the bottom of the sealing cover (202).

4. The device for purifying tail gas of hydrochloric acid waste liquid recovery according to claim 3, characterized in that: The sealing cap (202) is connected to the inside of the injection hopper (204), and a third valve (217) is fixedly installed inside the injection hopper (204).

5. The apparatus for recovering and purifying off-gas of hydrochloric acid waste solution according to claim 4, wherein Four first bolts (205) are inserted inside the sealing cover (202). The bottom of the first bolts (205) extends into the interior of the mounting box (201) and is connected to the mounting box (201) by threads. A sealing gasket (208) is fixedly installed on the top of the mounting box (201), and the top of the sealing gasket (208) contacts the bottom of the sealing cover (202).

6. The hydrochloric acid waste liquid recovery tail gas purification treatment device according to claim 5, characterized in that: Four connecting brackets (212) are fixedly installed at the bottom of the sealing cover (202). A connecting block (213) is provided inside the connecting bracket (212). The bottom of the connecting block (213) is fixedly connected to the top of the mounting bracket (215). A second bolt (216) is inserted inside the connecting bracket (212) and the connecting block (213).

7. The hydrochloric acid waste liquid recovery and tail gas purification treatment device according to claim 6, characterized in that: The installation box (201) has four limiting cavities (209) inside. Limiting rods (211) are inserted inside the limiting cavities (209). The top of the limiting rods (211) is fixedly connected to the bottom of the sealing cover (202).

8. The device for purifying tail gas of hydrochloric acid waste liquid recovery according to any one of claims 1-7, characterized in that: The right side of the mounting box (201) is connected to a drain pipe (206), and a second valve (207) is fixedly installed inside the drain pipe (206).

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