Device for preventing desulfurizing liquid from splashing

Abstract

The utility model relates to a device for preventing desulfurizing liquid from splashing, which comprises a bleeder, a downcomer and a water receiving box, the top of the bleeder is communicated with the water receiving box and arranged in the water receiving box, the bottom of the water receiving box is connected with the downcomer, the bottom end of the downcomer is connected with a desulfurizing tower, and the top of the bleeder is of an arc-shaped or n-shaped structure. The device has the advantages that the top of the bleeder is connected with the water receiving box, the desulfurizing liquid diffused from the bottom section of the desulfurizing tower is sprayed into the water receiving box through the bleeder, and under the action of the water receiving box, the desulfurizing liquid is not interfered by the wind direction, gathers in the water receiving box, is led out through the downcomer and can enter the regeneration section of the desulfurizing tower through the manhole cover to be recycled. The harm to on-site personnel is avoided, and the environment cannot be polluted due to the emission to the surroundings.

Description

Technical Field

[0001] The utility model belongs to the field of coking emission, and in particular relates to a device suitable for a emission pipeline of a desulfurization tower for preventing desulfurization liquid from splashing. Background Art

[0002] The vent pipe at the bottom of the desulfurization tower is widely used in chemical atmospheric pressure containers. It is a device specially used to discharge air or pressurized liquid in atmospheric pressure containers. When the atmospheric pressure container is put into operation, the vent tank is used to discharge air or pressurized liquid, which serves to protect the atmospheric pressure container from overpressure. The desulfurization device in the benzene hydrogenation operation area of ​​a chemical plant is a major hazard source, and the desulfurization tower is the core equipment of the device. The desulfurization section liquid replenishes the desulfurization liquid to the bottom section of the tower by full flow, and the bottom section of the tower is output to the outside through a circulating pump. The output is 350m³ / h. When the replenished desulfurization liquid exceeds this value, the bottom section of the tower is in an overpressure state, and the vent pipe will discharge air or pressurized liquid (i.e. desulfurization liquid). The vent pipe at the bottom of the desulfurization tower causes certain harm when discharging liquid under overpressure. Spraying desulfurization liquid in summer pollutes the soil environment and causes corrosion hazards to people who come into contact with the skin; in winter, the sprayed liquid is titrated into icicles at the root of the vent pipe or sprayed to the nearby ground and platform to freeze, which is easy to cause objects to hit or slip accidents to the personnel there.

[0003] In the prior art, patent publication number: CN211645115U discloses a gas release pipe anti-splashing device, which adds a rain cap to the gas release (emptying) pipe mouth, and uses a sleeve with a larger diameter than the release pipe to cover the entire release pipe mouth. After the discharged steam and water are deflected, the gas overflows from the gap between the rain cap and the sleeve, and the water droplets flow to the bottom of the sleeve after deflection, and flow into the release pipe through the reflux pipe and the overflow hole. However, the desulfurization tower release pipe is used for overpressure protection, and the discharged air or pressurized liquid cannot flow back to the release pipe. Therefore, this anti-splashing device cannot be used on the desulfurization tower release pipe. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a device for preventing desulfurization liquid from splashing, which can collect the splashed desulfurization liquid and drain the splashed desulfurization liquid out of the release pipe to avoid harm to on-site personnel and reduce environmental pollution.

[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions:

[0006] A device for preventing desulfurization liquid from splashing comprises a vent pipe, a downcomer and a water receiving box. The top of the vent pipe is connected to the water receiving box and is arranged in the water receiving box. The bottom of the water receiving box is connected to the downcomer. The bottom of the downcomer is connected to the desulfurization tower. The top of the vent pipe is an arc or gate-shaped structure.

[0007] The water outlet of the emission pipe is arranged opposite to the top of the downcomer.

[0008] The bottom of the water receiving box is provided with a bucket-shaped structure, and the bottom of the bucket-shaped structure is connected to the downcomer.

[0009] The water outlet of the diffusion pipe is arranged opposite to the bucket-shaped structure.

[0010] The top of the water receiving box is an open structure.

[0011] The upper edge of the water receiving box is higher than the highest point of the top of the discharge pipe.

[0012] The bottom of the vent pipe is fixedly connected to the vent pipe of the desulfurization tower through a flange.

[0013] The bottom end of the downcomer is connected to the manhole cover.

[0014] A reinforcing rib is connected between the downcomer and the water receiving box.

[0015] A reinforcing rib is connected between the vent pipe and the water receiving box.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model connects a water receiving box to the top of the vent pipe, and the desulfurization liquid released from the bottom section of the desulfurization tower is sprayed into the water receiving box through the vent pipe. Under the action of the water receiving box, the desulfurization liquid is not affected by the wind direction and is gathered in the water receiving box, and is led out by the downcomer, and can be reused in the regeneration section of the desulfurization tower through the manhole cover. It avoids harm to the on-site personnel and will not be released to the surroundings to pollute the environment. In addition, due to the provision of the water receiving box, the desulfurization liquid sprayed in winter can also be directly led out by the downcomer, and icicles will not form at the root of the vent pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 .

[0019] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 .

[0020] In the figure: 1-water receiving box 2-diffusing pipe 3-downcomer 4-bucket structure 5-flange 6-top of the iffusing pipe 7-diffusing pipeline 8-manhole cover. DETAILED DESCRIPTION

[0021] The present invention is described in detail below in conjunction with the accompanying drawings of the specification, but it should be noted that the implementation of the present invention is not limited to the following embodiments.

[0022] See Figure 1A device for preventing desulfurization liquid from splashing includes a vent pipe 2, a downcomer 3, and a water receiving box 1. The top 6 of the vent pipe is connected to the water receiving box 1, the bottom of the water receiving box 1 is connected to the downcomer 3, the bottom of the downcomer 3 is connected to the desulfurization tower, and the top 6 of the vent pipe is an arc or gate-shaped structure.

[0023] Among them, the water outlet of the vent pipe 2 is arranged opposite to the top of the downcomer 3, which reduces the splashing of the desulfurized liquid and allows the desulfurized liquid to quickly enter the downcomer 3. The bottom of the water receiving box 1 is provided with a bucket-shaped structure 4, and the bottom of the bucket-shaped structure 4 is connected to the downcomer 3. For the convenience of manufacturing, the bucket-shaped structure 4 is an upper and lower circular structure, and the circular part is welded to the downcomer 3. The water outlet of the vent pipe 2 is arranged opposite to the bucket-shaped structure 4. The top of the water receiving box 1 is an open structure, and the upper edge of the water receiving box 1 is higher than the highest point of the top 6 of the vent pipe to prevent the desulfurized liquid from splashing out of the water receiving box 1.

[0024] The bottom of the vent pipe 2 is fixedly connected to the vent pipe 7 of the desulfurization tower through a flange 5 for easy disassembly and maintenance. The bottom end of the downcomer 3 is connected to the manhole cover 8. Reinforcement ribs are connected between the downcomer 3 and the water receiving box 1, and between the vent pipe 2 and the water receiving box 1 to increase the connection strength.

[0025] See Figure 2 , in actual manufacturing, first cut and scrap the top pipe of the original vent pipe 7. Weld the flange 5 made of 304 steel DN80 PN25 at the cutting position. Use a 3m long DN80 pipe made of 304 steel to make a vent pipe 2, and weld a 304 steel DN80 PN25 flange. Change the original Z-type to an inverted U-type structure at the venting position of the top 6 of the vent pipe, and the top is a semicircular arc. The vent pipe 2 is connected to the pipe with a flange after cutting with bolts, and a DN80 PN25 gasket is installed between the two flanges. Use a 2mm thick 304 stainless steel plate to make a 600×600mm square water receiving box 1, the top of the water receiving box 1 is open, and the bottom of the water receiving box 1 has a 200×200mm square hole. A bucket-shaped structure 4 with a 200×200mm square hole on the top and a ø50mm round hole on the bottom is made of a steel plate of the same thickness and material as the water receiving box 1, and is welded to the square hole at the bottom of the water receiving box 1. The U-shaped structure outlet of the discharge pipe 2 is aligned with the center of the bucket-shaped structure 4. The upper edge of the water receiving box 1 is higher than the highest point of the top 6 of the discharge pipe to prevent liquid from splashing back and overflowing.

[0026] A 6m long DN50 pipe made of 304 steel is used to make the downcomer 3. One end of the downcomer 3 is welded to the circular hole at the bottom of the bucket structure 4, and the other end is welded to a DN50 PN25 304 steel flange. At the manhole cover 8 at the top of the tower (i.e. the regeneration section), a 200mm long DN50 pipe made of 304 steel and a DN50 PN25 flange are welded to short-circuit. The downcomer 3 is connected to the manhole cover 8 by bolts, flanges, and DN50 PN25 gaskets. The discharge pipe 2 discharges the entrained desulfurization liquid, which is recovered by the downcomer 3 to the regeneration section of the desulfurization tower.

[0027] During use, when the bottom section of the desulfurization tower is in an overpressure state, the release pipe 7 discharges air or pressurized desulfurization liquid. The desulfurization liquid released from the bottom section of the desulfurization tower is sprayed into the water receiving box 1 through the release pipe 2. Under the action of the water receiving box 1, the desulfurization liquid is not affected by the wind direction and is gathered in the water receiving box 1. It is led out by the downcomer 3 and can be reused in the regeneration section of the desulfurization tower through the manhole cover 8. It avoids harm to the on-site personnel and will not be released to the surroundings to pollute the environment. In addition, due to the provision of the water receiving box 1, the desulfurization liquid sprayed in winter can also be directly led out by the downcomer 3, and icicles will not form at the root of the release pipe 7.

[0028] The utility model connects a water receiving box 1 at the top of the vent pipe, and the desulfurization liquid released from the bottom section of the desulfurization tower is sprayed into the water receiving box 1 through the vent pipe 2. Under the action of the water receiving box 1, the desulfurization liquid is not affected by the wind direction and is collected in the water receiving box 1, and is led out by the downcomer 3, and can enter the regeneration section of the desulfurization tower through the manhole cover 8 for reuse. This avoids harm to on-site personnel and does not release to pollute the surrounding environment.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Through the above specific implementations, those skilled in the art can easily implement the utility model. However, it should be understood that the utility model is not limited to the above specific implementations. On the basis of the disclosed implementations, those skilled in the art can arbitrarily combine different technical features to achieve different technical solutions.

Claims

1. A device for preventing desulfurization liquid from splashing, characterized in that: It includes a vent pipe, a downcomer, and a water receiving box. The top of the vent pipe is connected to the water receiving box and is arranged in the water receiving box. The bottom of the water receiving box is connected to the downcomer. The bottom of the downcomer is connected to the desulfurization tower. The top of the vent pipe is an arc or gate-shaped structure.

2. A device for preventing desulfurization liquid from splashing according to claim 1, characterized in that: The water outlet of the emission pipe is arranged opposite to the top of the downcomer.

3. The device for preventing desulfurization liquid from splashing according to claim 1, characterized in that: The bottom of the water receiving box is provided with a bucket-shaped structure, and the bottom of the bucket-shaped structure is connected to the downcomer.

4. The device for preventing desulfurization liquid from splashing according to claim 3, characterized in that: The water outlet of the diffusion pipe is arranged opposite to the bucket-shaped structure.

5. The device for preventing desulfurization liquid from splashing according to claim 1, characterized in that: The top of the water receiving box is an open structure.

6. The device for preventing desulfurization liquid from splashing according to claim 1, characterized in that: The upper edge of the water receiving box is higher than the highest point of the top of the discharge pipe.

7. The device for preventing desulfurization liquid from splashing according to claim 1, characterized in that: The bottom of the vent pipe is fixedly connected to the vent pipe of the desulfurization tower through a flange.

8. The device for preventing desulfurization liquid from splashing according to claim 1, characterized in that: The bottom end of the downcomer is connected to the manhole cover.

9. The device for preventing desulfurization liquid from splashing according to claim 1, characterized in that: A reinforcing rib is connected between the downcomer and the water receiving box.

10. The device for preventing desulfurization liquid from splashing according to claim 1, characterized in that: A reinforcing rib is connected between the vent pipe and the water receiving box.

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