Dry absorption tower

Abstract

The utility model provides a dry absorption tower, and belongs to the technical field of dry absorption towers. The dry absorption tower comprises a dry absorption tower assembly. The feeding end of the dry absorption tower assembly is communicated with a defoaming assembly, the defoaming assembly comprises a drying tower, a feeding port is formed in the end, away from the dry absorption tower assembly, of the drying tower, two mounting ports are formed in the top of the drying tower, and two movable drawers with hollow bottoms are detachably arranged in the drying tower through the two mounting ports; metal wire mesh demisters are detachably installed in the two movable drawers, and a pressure measuring opening is further formed in the drying tower. Through the arrangement of the two wire mesh demisters, the wire mesh demisters can be cleaned in a staggered manner, so that the dry absorption tower can still work normally when the wire mesh demisters are taken out, the working efficiency of the dry absorption tower is improved, and the two wire mesh demisters can improve the acid foam removal effect of SO2.

Description

Technical Field

[0001] This application relates to the field of dry absorption towers, and more specifically, to a dry absorption tower. Background Technology

[0002] The sulfuric acid dry absorption tower is a very important piece of equipment used in sulfuric acid production systems. It generally includes a tower body, an acid separator in the upper part of the tower body, a ceramic ring in the middle, a gas inlet on the side of the tower body, and an acid outlet at the bottom.

[0003] The SO2 furnace gas from the purification section is conditioned to a concentration of about 7.5% before entering the drying tower. It is then sprayed with 93-94% sulfuric acid to reduce the moisture content to below 0.1g / Nm3. After acid mist is removed by the wire mesh demister at the top of the tower, it enters the conversion process. However, the existing wire mesh demister needs to be cleaned after a period of operation. This requires removing the wire mesh demister for cleaning, which causes the dry absorption tower to stop working and reduces its efficiency. Utility Model Content

[0004] To overcome the above shortcomings, this application provides a dry suction tower, which aims to improve the problem that the metal wire mesh demister needs to be removed for cleaning, thereby stopping the dry suction tower from working and reducing its efficiency.

[0005] This application provides a dry absorption tower, including a dry absorption tower assembly.

[0006] The feed end of the dry suction tower assembly is connected to a demisting assembly, which includes a drying tower. The drying tower has a feed inlet at the end away from the dry suction tower assembly. The top of the drying tower has two mounting ports. Inside the drying tower, two movable drawers with empty bottoms are detachably installed through the two mounting ports. A metal wire mesh demister can be detachably installed inside each of the two movable drawers. The drying tower is also equipped with a pressure measuring port.

[0007] In one specific implementation, two sets of limiting plates are installed inside the drying tower, and the two sets of limiting plates respectively limit the two movable drawers.

[0008] In one specific implementation, the bottom of the metal wire mesh demister is fixedly connected to a locking block, which is detachably locked onto the bottom wall of the movable drawer.

[0009] In one specific implementation, the inner bottom wall of the movable drawer is provided with a slot that mates with the card block, and both sides of the slot are provided with elastic snap-fit ​​members that can snap the card block into place.

[0010] In one specific implementation, the elastic snap-fit ​​component includes a spring and an arc-shaped head, the spring being connected to the sidewall of the relief groove, the arc-shaped head being connected to the spring, and the arc-shaped head being snapped onto the sidewall of the snap-fit ​​block.

[0011] In one specific implementation, the dry absorption tower assembly includes a base plate, on which a shell is provided. The shell is divided into a first dry absorption tower and a second dry absorption tower. The first dry absorption tower is connected to the drying tower, and the second dry absorption tower is provided with an acid outlet.

[0012] In one specific implementation, a saddle ring packing is provided between the first dry suction tower and the second dry suction tower.

[0013] In one specific implementation, the movable drawer is fitted with a handle on its side.

[0014] Beneficial effects:

[0015] 1. By setting up two metal wire mesh demisters, the cleaning of the metal wire mesh demisters can be carried out at different times, so that the dry adsorption tower can still work normally when the metal wire mesh demisters are removed, thus improving the working efficiency of the dry adsorption tower. In addition, the two metal wire mesh demisters can improve the desiccation effect of SO2.

[0016] 2. The metal wire mesh demister can be easily removed for cleaning via a detachable connection between the movable drawer and the drying tower.

[0017] 3. The detachable design of the wire mesh demister and the movable drawer facilitates the installation and removal of the wire mesh demister. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the dry suction tower structure provided in the embodiments of this application;

[0020] Figure 2 A schematic diagram of the defogging assembly structure provided for an embodiment of this application;

[0021] Figure 3 A schematic diagram illustrating the connection structure between the metal wire mesh demister and the movable drawer provided in the embodiments of this application;

[0022] Figure 4 Provided for the implementation of this application Figure 3 Enlarged view of point A in the middle.

[0023] In the diagram: 1-Base plate; 2-Outer shell; 3-First dry suction tower; 4-Second dry suction tower; 41-Acid outlet; 5-Irregular saddle ring packing; 6-Feed inlet; 8-Demisting assembly; 81-Drying tower; 82-Metal wire mesh demister; 83-Moving drawer; 84-Limiting plate; 85-Handle; 86-Clamping block; 88-Elastic clamping element; 881-Spring; 882-Arc-shaped head; 9-Pressure measuring port. Detailed Implementation

[0024] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0025] Please see Figures 1-4 This application provides a dry absorption tower, including a dry absorption tower assembly.

[0026] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 The feed end of the dry absorption tower assembly is connected to a demister assembly 8, which includes a drying tower 81. A feed inlet 6 is located at the end of the drying tower 81 furthest from the dry absorption tower assembly. Two mounting ports are opened on the top of the drying tower 81. Inside the drying tower 81, two removable drawers 83 with empty bottoms are detachably installed through the two mounting ports. Metal wire mesh demisters 82 are detachably installed inside each of the two drawers 83. A pressure testing port 9 is also provided on the drying tower 81. When SO2 enters the drying tower 81, it passes through the two metal wire mesh demisters 82 to remove acid mist before entering the dry absorption tower assembly for further processing. The use of two metal wire mesh demisters 82 allows for staggered cleaning times, ensuring the dry absorption tower continues to operate normally even when the demisters are removed, thus improving the efficiency of the dry absorption tower. Furthermore, the two metal wire mesh demisters 82 enhance the removal of acid mist from SO2. The detachable connection between the movable drawer 83 and the drying tower 81 allows for easy removal and cleaning of the wire mesh demister 82. The detachable connection between the wire mesh demister 82 and the movable drawer 83 also facilitates the installation and removal of the wire mesh demister 82.

[0027] In this embodiment, two sets of limiting plates 84 are installed inside the drying tower 81, which respectively limit the movement of the two movable drawers 83. A locking block 86 is fixedly connected to the bottom of the wire mesh demister 82. Specifically, the locking block 86 includes a fixing block, which is fixedly connected to the bottom of the wire mesh demister 82. An insert block is fixedly connected to the bottom of the fixing block, and the side wall of the insert block is located inside the slot and has an arc-shaped groove that mates with the arc-shaped head 882. The locking block 86 is detachably locked to the inner bottom wall of the movable drawer 83. The inner bottom wall of the movable drawer 83 has a slot that mates with the locking block 86. Both sides of the slot are provided with elastic locking members 88, which can lock the locking block 86 in place. The elastic locking member 88 includes a spring 881 and an arc-shaped head 882. The spring 881 is connected to the side wall of the slot, and the arc-shaped head 882 is connected to the spring 881. The arc-shaped head 882 is locked to the side wall of the locking block 86. A handle 85 is installed on the side of the movable drawer 83. By grasping the handle 85, the movable drawer 83 can be removed from the drying tower 81 through the installation port. Then, by grasping the wire mesh demister 82 and pulling it upward, the locking block 86 moves upward, causing the arc-shaped head 882 to disengage from the arc-shaped groove, thereby removing the wire mesh demister 82. During installation, by grasping the wire mesh demister 82 and aligning the locking block 86 with the locking groove, and then pressing it downward, the arc-shaped head 882 is locked into the arc-shaped groove, thus completing the installation.

[0028] In this embodiment, the dry absorption tower assembly includes a base plate 1, on which an outer shell 2 is mounted. The outer shell 2 is divided into a first dry absorption tower 3 and a second dry absorption tower 4. The first dry absorption tower 3 is connected to the drying tower 81, and the second dry absorption tower 4 is provided with an acid outlet 41. A heterogeneous saddle ring packing 5 is disposed between the first dry absorption tower 3 and the second dry absorption tower 4. The 93-94% sulfuric acid sprayed into the drying tower 81 absorbs moisture from the SO2 furnace gas and flows into a circulation tank. The acid concentration is adjusted by introducing 98% acid from the circulation system of the first dry absorption tower 3 into the circulation tank of the drying tower 81. An acid circulation pump sends the 93-94% acid from the circulation tank to the anode protection acid cooler. After cooling, it enters the acid distributor at the top of the drying tower 81 for spraying. A portion of the increased 93-94% sulfuric acid flows into the circulation tank of the first dry absorption tower 3. The first conversion gas from the conversion process enters the first dry absorption tower 3 to absorb SO2 and passes through a fiber demister to remove acid mist before entering the conversion system for a second conversion. The first dry absorption tower 3 is sprayed with 98% acid. After absorbing SO2, the increased concentration flows into the circulation tank. 93-94% sulfuric acid from drying tower 81, or supplemented with water to maintain acid concentration, is pumped by the circulating acid pump into the anode protection acid cooler of the first dry absorption tower 3 for cooling before entering the first dry absorption tower 3 for spraying. Part of the increased 98% acid flows into the circulation tank of drying tower 81, and the other part is cooled by the finished acid cooler and sent to the finished acid tank. Secondary conversion gas from the conversion section enters the second dry absorption tower 4 for absorption, and then passes through the fiber demister at the top of the second dry absorption tower 4 to remove acid mist before entering the tail absorption section. The second dry absorption tower 4 is sprayed with 98% acid. After absorbing SO2, the increased concentrated acid flows into the circulation tank. Water is added to maintain acid concentration, and then the circulating acid pump sends it to the second absorption tower acid cooler for cooling before entering the second dry absorption tower 4 for spraying. The increased 98% sulfuric acid flows into the circulation tank of the first dry absorption tower 3.

[0029] Working principle of the dry absorption tower:

[0030] When SO2 enters the drying tower 81, it passes through two wire mesh demisters 82 to remove acid mist before entering the dry adsorption tower assembly for further processing. The use of two wire mesh demisters 82 allows for staggered cleaning times, ensuring the dry adsorption tower continues operating normally even when the demisters are removed, thus improving its efficiency. The two demisters also enhance the removal of acid mist from the SO2. The detachable connection between the movable drawer 83 and the drying tower 81 facilitates the removal of the wire mesh demisters 82 for cleaning. This detachable connection also facilitates the installation and removal of the wire mesh demisters 82.

[0031] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

Claims

1. A dry absorption tower, characterized in that: include A dry absorption tower assembly, wherein the feed end of the dry absorption tower assembly is connected to a defoaming assembly (8), the defoaming assembly (8) comprises a drying tower (81), one end of the drying tower (81) away from the dry absorption tower assembly is provided with a feed port (6), the top of the drying tower (81) is provided with two mounting ports, two movable drawers (83) with empty bottoms are detachably provided inside the drying tower (81) through the two mounting ports, a metal wire mesh defoamer (82) is detachably installed inside the two movable drawers (83), and a pressure measuring port (9) is also provided on the drying tower (81).

2. A dry absorption tower according to claim 1, characterized in that: Two groups of limiting plates (84) are installed inside the drying tower (81), and the two groups of limiting plates (84) respectively limit the two movable drawers (83).

3. A dry absorption tower according to claim 1, characterized in that: The bottom of the metal wire mesh demister (82) is fixedly connected to a clamping block (86), and the clamping block (86) is detachably clamped on the inner bottom wall of the movable drawer (83).

4. A dry absorption tower according to claim 3, characterized in that: The inner bottom wall of the movable drawer (83) is provided with a slot that matches the card block (86), and both side walls of the slot are provided with elastic card connectors (88), and the elastic card connectors (88) can card the card block (86).

5. A dry absorption tower according to claim 4, characterized in that: The elastic clamping member (88) comprises a spring (881) and an arc-shaped head (882); the spring (881) is connected to the side wall of the clearance groove; the arc-shaped head (882) is connected to the spring (881); and the arc-shaped head (882) is clamped on the side wall of the clamping block (86).

6. A dry absorption tower according to claim 1, characterized in that: The dry absorption tower assembly comprises a base plate (1), a shell (2) is arranged on the base plate (1), and the shell (2) is divided into a first dry absorption tower (3) and a second dry absorption tower (4), the first dry absorption tower (3) is connected to the drying tower (81), and the second dry absorption tower (4) is provided with an acid outlet (41).

7. A dry absorption tower according to claim 6, characterized in that: An iso-saddle ring filler (5) is arranged between the first dry absorption tower (3) and the second dry absorption tower (4).

8. A dry absorption tower according to claim 1, characterized in that: A handle (85) is installed on the side of the movable drawer (83).

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