Acid tank for WSA sulfuric acid condenser

Abstract

The utility model discloses an acid tank for a WSA sulfuric acid condenser, which comprises one or a plurality of tank bodies, the plurality of tank bodies are communicated in parallel, a partition wall is arranged between the adjacent tank bodies, and the partition wall is provided with a main circulation channel and a plurality of process air holes; the upper part of each tank body is provided with a connector connected with the acid-resistant glass heat exchange tube bundle and the shell pass cooling chamber; process gas inlets are formed in the outer sides of the two groove bodies on the outermost side, or when only one groove body exists, the process gas inlets are formed in the two ends of the groove body; the bottom of the tank body is communicated with one or more gas-liquid separation devices for collecting acid liquor; according to the utility model, process gas can uniformly enter the condensation pipe from the two ends of the acid tank, so that the condensation effect is enhanced; the flow area of the process gas in the acid tank is increased, so that the backflow caused by wall surfaces among the groups can be effectively reduced; the gas-liquid separation device can be used for separating acid liquor from process gas, so that acid pollution is reduced, and the purity of acid is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wet acid production, in particular to an acid tank used for a WSA sulfuric acid condenser. Background Art

[0002] In the wet acid (WSA) process, the process gas (mainly air, SO 3 and water vapor) are directly condensed and absorbed into concentrated sulfuric acid in the sulfuric acid condenser. The main process is: 290℃ air, SO 3 The water vapor enters the condenser acid tank through the two-way air inlet, and is distributed to each acid-resistant glass heat exchange tube through the acid tank. The water vapor in the process gas first condenses in the upper tube section of the acid-resistant glass heat exchange tube to form droplets and release heat. Since sulfur trioxide is very soluble in water, at this stage, the condensed water droplets absorb sulfur trioxide to become tiny sulfuric acid droplets and release heat. The heat released by condensation is taken away by the shell cooling air. 3 and water vapor, and the rest of the non-condensable gases, air, etc. are discharged from the condenser. The high-temperature (250°C) hot sulfuric acid in the condenser falls into the acid tank at the bottom of the condenser and is discharged through the drain port at the bottom of the acid tank to form a product.

[0003] However, the existing sulfuric acid condenser acid tank has the following problems: first, the process gas flow distribution is uneven. The existing condensing device structure has a small single unit capacity and is mostly modular. It needs to be combined when performing large-scale condensation acid production. Since the modular structures are independent of each other and the process gas inlet is a one-way input, the gas flow efficiency is low, and a large reflux will occur at the location of the partition wall of each module, which reduces the uniformity of the gas flow distribution, and thus the sulfuric acid production efficiency is low; second, other impurities such as non-condensable gases are easily brought out during acid separation. Sulfuric acid is collected as 250°C high-temperature hot sulfuric acid that drops from the upper part of the condenser and drips into the bottom acid tank, and is discharged through the drain port at the bottom of the acid tank. Since the acid discharge mainly depends on the process gas pressure and the gravity of the acid, it is easy to cause the process gas to be discharged along with the acid, thereby affecting the acid concentration, so that the discharged concentrated sulfuric acid contains certain impurities. Utility Model Content

[0004] In order to solve the above problems in the prior art, the utility model provides an acid tank for a WSA sulfuric acid condenser.

[0005] The technical solution adopted by the utility model is:

[0006] The utility model provides an acid tank for a WSA sulfuric acid condenser, comprising one or more tank bodies, wherein the multiple tank bodies are connected in parallel, and partition walls are arranged between adjacent tank bodies to meet the load-bearing requirements of the condenser acid tank, and the partition walls are provided with a main flow channel and a plurality of process air holes to increase the flow area of ​​the process gas; an interface connected to an acid-resistant glass heat exchange tube bundle and a shell-side cooling chamber is arranged on the upper part of each tank body; the outer sides of the two outermost tank bodies are process gas inlets, or when there is only one tank body, the two ends of the tank body are process gas inlets; the bottom of the tank body is connected to one or more gas-liquid separation devices for collecting acid liquid.

[0007] Furthermore, the process gas inlet inlet end extends a short section from the acid tank, the short section is connected to the process gas pipeline, the diameter of the short section is larger than the main process gas flow channel of the condenser acid tank, and the process gas inlet is a circular or rectangular channel.

[0008] Furthermore, an acid discharge port connected to the gas-liquid separation device is provided at the bottom of the tank body.

[0009] Furthermore, the size of the main flow channel is larger than the process pores, the diameter of the process pores is 170-360 mm, the process pores are arranged on both sides of the main flow channel, and each side of the process pores is a circular or square hole with a different diameter.

[0010] Furthermore, the gas-liquid separation device includes a separation tank, a side of which is provided with an air inlet pipe connected to the acid discharge port, a gas-liquid separation orifice plate is fixed at the lower part of the separation tank, a liquid discharge port is provided at the bottom of the separation tank below the gas-liquid separation orifice plate, a top of the separation tank is provided with an air outlet pipe with one end inserted into the tank, the other end of the air outlet pipe is inserted into the interior of the trough body, a swirl rod is provided above the gas-liquid separation orifice plate, and the swirl rod is spirally fixed on the outer surface of the air outlet pipe.

[0011] Furthermore, the gas-liquid separation orifice plate is a circular porous plate, and is arranged at a distance from the bottom of the container and one third of the overall height of the container.

[0012] Furthermore, the middle portion of the gas-liquid separation orifice plate is an upwardly convex arc surface (a downwardly concave arc surface in the figure), and a plurality of drainage holes are evenly spaced around the gas-liquid separation orifice plate.

[0013] Furthermore, a wire mesh filter layer is provided on the air outlet pipe, and the thickness of the wire mesh filter layer is 10-50 mm.

[0014] Furthermore, the wire mesh filter layer includes an acid-resistant fiber wire demister made of PFA or PTFE.

[0015] Furthermore, the liquid discharge port is connected with a liquid sealing device.

[0016] Furthermore, the tank body includes four layers of structure from the inside to the outside, the first structure is an anti-corrosion lining, the second layer of structure is insulating bricks and acid-resistant bricks, the third layer of structure is a steel plate, and the fourth layer of structure is insulating lining asbestos. The inner surface of the acid tank is covered with anti-corrosion lining and insulating bricks.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] (1) The bidirectional air inlet structure of the utility model can make the process gas enter the condenser tube evenly from both ends of the acid tank, thereby enhancing the condensation effect.

[0019] (2) The utility model discloses a method of opening holes in the partition wall, in which holes are opened in the partition walls between two adjacent components, which can increase the flow area of ​​the process gas in the acid tank, effectively reduce the backflow caused by the wall surface between each group, and make the airflow distribution in the acid-resistant glass heat exchange tube more uniform.

[0020] (3) The gas-liquid separation device of the utility model is connected to the acid discharge port and is located at the bottom of the acid tank. The gas-liquid separation device can separate the acid liquid and the process gas, thereby solving the problem that other impurities such as non-condensable gases are easily brought out when collecting the acid liquid. In addition, the device is easy to maintain and has low cost, and can be used on a large scale. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a cross-sectional view of the acid tank part structure used in WSA sulfuric acid condenser;

[0022] Figure 2 It is a schematic diagram of the partition wall opening for the acid tank part structure of the WSA sulfuric acid condenser;

[0023] Figure 3 The diagram is a schematic diagram of the structure of a gas-liquid separation device for the acid tank portion of a WSA sulfuric acid condenser.

[0024] In the figure: 1-tank body; 2-partition wall; 21-main flow channel; 22-process air hole; 3-interface; 4-process gas inlet; 5-acid outlet; 6-gas-liquid separation device; 61-separation tank; 62-inlet pipe; 63-gas-liquid separation orifice plate; 64-outlet pipe; 65-swirl rod; 66-wire mesh filter layer; 67-liquid outlet. DETAILED DESCRIPTION

[0025] In order to clearly illustrate the technical features of this solution, the present invention is described in detail below through a specific implementation method and in combination with its drawings. In the following description, many specific details are described to facilitate a full understanding of the present application, but the present application can also be implemented in other ways different from those described herein, so the scope of protection of the present application is not limited by the specific embodiments disclosed below. In addition, in the description of the present application, it should be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application 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 application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly specified and specifically defined. In this application, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection, an electrical connection, or a communication; it can be directly connected, or indirectly connected 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 this application can be understood according to the specific circumstances. In this application, unless otherwise clearly specified and defined, the first feature "on" or "under" the second feature can be the first and second features directly contacting, or the first and second features indirectly contacting through an intermediate medium. In the description of this specification, the description of the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0026] Example 1

[0027] See also Figures 1 to 3The utility model provides an embodiment: an acid tank for a WSA sulfuric acid condenser, comprising a tank body 1, an interface 3 connected to an acid-resistant glass heat exchange tube bundle and a shell-side cooling chamber is provided on the upper part of the tank body 1; both ends of the tank body 1 are process gas inlets 4; the bottom of the tank body 1 is connected to a gas-liquid separation device 6 for collecting acid liquid.

[0028] The inlet end of the process gas inlet 4 extends out of the acid tank with a short section, the short section is connected to the process gas pipeline, the diameter of the short section is larger than the main process gas flow channel 21 of the condenser acid tank, and the process gas inlet 4 is a circular channel.

[0029] The bottom of the tank body 1 is provided with an acid discharge port 5 which is connected to a gas-liquid separation device 6 .

[0030] The gas-liquid separation device 6 includes a separation tank 61, a side of which is provided with a mixed gas inlet connected to the acid discharge port 5, a gas-liquid separation orifice plate 63 is fixed at the bottom of the separation tank 61, a liquid discharge port 67 is provided at the bottom of the separation tank 61 below the gas-liquid separation orifice plate 63, a top of the separation tank 61 is provided with an outlet pipe 64 with one end inserted into the tank, and the other end of the outlet pipe 64 is inserted into the interior of the tank body 1, a swirl rod 65 is provided above the gas-liquid separation orifice plate 63, and the swirl rod 65 is fixed to the outer surface of the outlet pipe 64.

[0031] Working principle:

[0032] After the high-temperature process gas enters the tank body 1 from the process gas inlets at both ends of the tank body 1, it enters the acid-resistant glass heat exchange tube bundle. After cooling treatment, the liquefied sulfuric acid droplets flow into the tank body 1 under the action of gravity. The water vapor in the process gas first condenses in the upper section of the heat exchange tube to form droplets. Since sulfur trioxide is very soluble in water, at this stage, the condensed water droplets absorb sulfur trioxide to become tiny dilute sulfuric acid droplets. As time goes by, the tiny dilute sulfuric acid droplets gradually merge and fall off. When they fall down along the wall of the acid-resistant glass tube, the wall temperature gradually increases, and the liquid water in the dilute sulfuric acid droplets evaporates twice, thereby turning the dilute sulfuric acid droplets into concentrated sulfuric acid droplets, and finally the concentrated sulfuric acid is collected in the tank body 1. Concentrated sulfuric acid is discharged from the tank body 1 through the acid outlet 5 and enters the gas-liquid separation device 6. The concentrated sulfuric acid with process gas is tangentially passed into the separation tank 61 through the air inlet pipe 62. The process gas flows to the top of the separation tank 61 body and is discharged through the air outlet pipe 64. This prolongs the gas-liquid separation time. During the flow of gas, the gas swirls at high speed under the action of the swirl rod 65 on the outer surface of the air outlet pipe 64. The condensed acid loses kinetic energy after colliding with the wall of the separation tank 61 and the wall of the swirl rod 65, and adheres to it, thereby achieving separation from the mixed gas. The acid on the wall of the separation tank 61 flows to the gas-liquid separation orifice 63 under the action of gravity, and then flows to the outside of the gas-liquid separator through the liquid outlet 67 and is discharged regularly.

[0033] Example 2

[0034] See also Figures 1 to 3 The utility model provides an embodiment: an acid tank for a WSA sulfuric acid condenser, comprising four tank bodies 1, the four tank bodies 1 are connected in parallel, a partition wall 2 is arranged between adjacent tank bodies 1, a main flow channel 21 and six process air holes 22 are arranged on the partition wall 2, an interface 3 connected to an acid-resistant glass heat exchange tube bundle and a shell-side cooling chamber is arranged on the upper part of each tank body 1, the outer sides of the two outermost tank bodies 1 are process gas inlets 4, and the bottom of the tank body 1 is connected to two gas-liquid separation devices 6 for collecting acid liquid.

[0035] The inlet end of the process gas inlet 4 extends out of the acid tank with a short section, the short section is connected to the process gas pipeline, the diameter of the short section is larger than the main process gas flow channel 21 of the condenser acid tank, and the process gas inlet 4 is a circular channel.

[0036] The main flow channel 21 is larger than the process pores 22. The process pores 22 are arranged on both sides of the main flow channel 21. The process pores 22 are three circular holes with different diameters on each side. The diameters of the process pores 22 are 360 ​​mm, 170 mm, and 200 mm respectively.

[0037] The bottom of the tank body 1 is provided with an acid discharge port 5 which is connected to a gas-liquid separation device 6 .

[0038] The gas-liquid separation device 6 comprises a separation tank 61, a mixed gas inlet connected to the acid discharge port 5 is provided on the side of the separation tank 61, a gas-liquid separation orifice plate 63 is fixed at the bottom of the separation tank 61, a liquid discharge port 67 is provided at the bottom of the separation tank 61 below the gas-liquid separation orifice plate 63, a gas outlet pipe 64 is provided at one end inserted into the tank at the top of the separation tank 61, and the other end of the gas outlet pipe 64 is inserted into the tank body 1, a swirl rod 65 is provided above the gas-liquid separation orifice plate 63, and the swirl rod 65 is fixed on the outer surface of the gas outlet pipe 64. The liquid discharge port 67 is connected to a liquid sealing device.

[0039] Furthermore, the tank body 1 includes four layers from the inside to the outside, the first structure is an anti-corrosion lining, the second structure is an insulation brick and an acid-resistant brick, the third structure is a steel plate, the fourth structure is an insulation lining, and the inner surface of the acid tank is coated with an anti-corrosion lining and insulation bricks. According to the corrosion characteristics of sulfuric acid, the inside of the equipment is treated with fluorine lining to form an anti-corrosion layer, which can prevent sulfuric acid from corroding the equipment, while improving the purity of sulfuric acid, thereby improving production efficiency.

[0040] Working principle:

[0041] After the high-temperature process gas enters the tank body 1 from the process gas inlets at both ends of the tank body 1, it enters the acid-resistant glass heat exchange tube bundle. After cooling treatment, the liquefied sulfuric acid droplets flow into the tank body 1 under the action of gravity. The water vapor in the process gas first condenses in the upper section of the heat exchange tube to form droplets. Since sulfur trioxide is very soluble in water, at this stage, the condensed water droplets absorb sulfur trioxide to become tiny dilute sulfuric acid droplets. As time goes by, the tiny dilute sulfuric acid droplets gradually merge and fall off. When they fall down along the tube wall, the temperature of the tube wall gradually increases, and the liquid water in the dilute sulfuric acid droplets evaporates twice, thereby turning the dilute sulfuric acid droplets into concentrated sulfuric acid droplets, and finally the concentrated sulfuric acid is collected in the tank body 1. Concentrated sulfuric acid is discharged from the tank body 1 through the acid outlet 5 and enters the gas-liquid separation device 6. Concentrated sulfuric acid with process gas is tangentially passed into the separation tank 61 through the air inlet pipe 62. The process gas flows to the top of the separation tank 61 body and is discharged through the air outlet pipe 64. This prolongs the gas-liquid separation time. During the gas flow, the gas swirls at high speed under the action of the swirl rod 65 on the outer surface of the air outlet pipe 64. The condensed acid loses kinetic energy after colliding with the wall of the separation tank 61 and the wall of the swirl rod 65, and adheres to it, thereby achieving separation from the steering gas. The acid on the wall of the separation tank 61 flows to the gas-liquid separation orifice plate 63 under the action of gravity, and then flows to the outside of the gas-liquid separator through the liquid outlet 67 and is discharged regularly.

[0042] Example 3

[0043] See also Figures 1 to 3 The utility model provides an embodiment: an acid tank for a WSA sulfuric acid condenser, comprising four tank bodies 1, the four tank bodies 1 are connected in parallel, a partition wall 2 is arranged between adjacent tank bodies 1, a main flow channel 21 and six process air holes 22 are arranged on the partition wall 2, an interface 3 connected to an acid-resistant glass heat exchange tube bundle and a shell-side cooling chamber is arranged on the upper part of each tank body 1, the outer sides of the two outermost tank bodies 1 are process gas inlets 4, and the bottom of the tank body 1 is connected to two gas-liquid separation devices 6 for collecting acid liquid.

[0044] The inlet end of the process gas inlet 4 extends out of the acid tank with a short section, the short section is connected to the process gas pipeline, the diameter of the short section is larger than the main process gas flow channel 21 of the condenser acid tank, and the process gas inlet 4 is a circular channel.

[0045] The main flow channel 21 is larger than the process pores 22. The process pores 22 are arranged on both sides of the main flow channel 21. The process pores 22 are three circular holes with different diameters on each side. The diameters of the process pores 22 are 360 ​​mm, 170 mm, and 200 mm respectively.

[0046] The bottom of the tank body 1 is provided with an acid discharge port 5 which is connected to a gas-liquid separation device 6 .

[0047] The gas-liquid separation device 6 comprises a separation tank 61, a mixed gas inlet connected to the acid discharge port 5 is provided on the side of the separation tank 61, a gas-liquid separation orifice plate 63 is fixed at the bottom of the separation tank 61, a liquid discharge port 67 is provided at the bottom of the separation tank 61 below the gas-liquid separation orifice plate 63, a gas outlet pipe 64 is provided at one end inserted into the tank at the top of the separation tank 61, and the other end of the gas outlet pipe 64 is inserted into the tank body 1, a swirl rod 65 is provided above the gas-liquid separation orifice plate 63, and the swirl rod 65 is fixed on the outer surface of the gas outlet pipe 64. The liquid discharge port 67 is connected to a liquid sealing device.

[0048] Furthermore, the gas-liquid separation orifice plate 63 is a circular porous plate, the middle portion of the gas-liquid separation orifice plate 63 is an arc surface convex upward, and a plurality of drainage holes are evenly distributed around the gas-liquid separation orifice plate 63 .

[0049] Furthermore, a wire mesh filter layer 66 is provided on the air outlet pipe 64, and the wire mesh filter layer 66 has a thickness of 30 mm. The wire mesh filter layer 66 includes an acid-resistant fiber demister made of PFA.

[0050] Working principle:

[0051] After the high-temperature process gas enters the tank body 1 from the process gas inlets at both ends of the tank body 1, it enters the acid-resistant glass heat exchange tube bundle. After cooling treatment, the liquefied sulfuric acid droplets flow into the tank body 1 under the action of gravity. The water vapor in the process gas first condenses in the upper section of the heat exchange tube to form droplets. Since sulfur trioxide is very soluble in water, at this stage, the condensed water droplets absorb sulfur trioxide to become tiny dilute sulfuric acid droplets. As time goes by, the tiny dilute sulfuric acid droplets gradually merge and fall off. When they fall down along the tube wall, the temperature of the tube wall gradually increases, and the liquid water in the dilute sulfuric acid droplets evaporates twice, thereby turning the dilute sulfuric acid droplets into concentrated sulfuric acid droplets, and finally the concentrated sulfuric acid is collected in the tank body 1. Concentrated sulfuric acid is discharged from the tank body 1 through the acid outlet 5 and enters the gas-liquid separation device 6. Concentrated sulfuric acid with process gas is tangentially passed into the separation tank 61 through the air inlet pipe 62. The process gas flows to the top of the separation tank 61 body and is discharged through the air outlet pipe 64. This prolongs the gas-liquid separation time. During the gas flow, the gas swirls at high speed under the action of the swirl rod 65 on the outer surface of the air outlet pipe 64. The condensed acid loses kinetic energy after colliding with the wall of the separation tank 61 and the wall of the swirl rod 65, and adheres to it, thereby achieving separation from the steering gas. The acid on the wall of the separation tank 61 flows to the gas-liquid separation orifice plate 63 under the action of gravity, and then flows to the outside of the gas-liquid separator through the liquid outlet 67 and is discharged regularly.

[0052] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. An acid tank for a WSA sulfuric acid condenser, characterized in that: It comprises one or more trough bodies; the multiple trough bodies are connected in parallel, and partition walls are arranged between adjacent trough bodies, and the partition walls are provided with main flow channels and a plurality of process air holes; the upper part of each trough body is provided with an interface connected with an acid-resistant glass heat exchange tube bundle and a shell-side cooling chamber; when there are multiple trough bodies, the outer sides of the two outermost trough bodies are process gas inlets, or when there is only one trough body, the two ends of the trough body are process gas inlets; the bottom of the trough body is connected with one or more gas-liquid separation devices for collecting acid liquid.

2. The acid tank for WSA sulfuric acid condenser according to claim 1, characterized in that: The inlet end of the process gas inlet extends a short section from the acid tank, the short section is connected to the process gas pipeline, the diameter of the short section is larger than the main process gas flow channel of the condenser acid tank, and the process gas inlet is a circular or rectangular channel.

3. The acid tank for WSA sulfuric acid condenser according to claim 1, characterized in that: An acid discharge port connected to the gas-liquid separation device is provided at the bottom of the tank body.

4. The acid tank for a WSA sulfuric acid condenser according to claim 1, characterized in that: The size of the main flow channel is larger than the process air holes, and the process air holes are arranged on both sides of the main flow channel. The diameter of the process air holes is 170-360 mm.

5. The acid tank for WSA sulfuric acid condenser according to claim 1, characterized in that: The gas-liquid separation device includes a separation tank, a gas inlet pipe connected to the acid discharge port is provided on the side of the separation tank, a gas-liquid separation orifice plate is fixed at the lower part of the separation tank, a liquid discharge port is provided at the bottom of the separation tank below the gas-liquid separation orifice plate, an gas outlet pipe with one end inserted into the tank is provided at the top of the separation tank, and the other end of the gas outlet pipe is inserted into the interior of the tank body, a swirl rod is provided above the gas-liquid separation orifice plate, and the swirl rod is fixed to the outer surface of the gas outlet pipe.

6. The acid tank for WSA sulfuric acid condenser according to claim 5, characterized in that: The gas-liquid separation orifice plate is a circular porous plate, the middle part of the gas-liquid separation orifice plate is an upwardly convex arc surface, and a plurality of drainage holes are evenly spaced around the gas-liquid separation orifice plate.

7. The acid tank for WSA sulfuric acid condenser according to claim 5, characterized in that: The air outlet pipe is provided with a wire mesh filter layer, and the thickness of the wire mesh filter layer is 10-50mm.

8. The acid tank for WSA sulfuric acid condenser according to claim 7, characterized in that: The wire mesh filter layer includes an acid-resistant fiber wire demister made of PFA or PTFE.

9. The acid tank for WSA sulfuric acid condenser according to claim 5, characterized in that: The liquid discharge port is connected with a liquid sealing device.

10. The acid tank for WSA sulfuric acid condenser according to claim 1, characterized in that: The tank body includes four layers of structure from inside to outside, the first layer of structure is anti-corrosion lining, the second layer of structure is insulation bricks and acid-resistant bricks, the third layer of structure is steel plate, and the fourth layer of structure is insulation lining. The inner surface of the acid tank is covered with anti-corrosion lining and insulation bricks.

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