Desulfurization tower leakage prevention device and method

Abstract

The present invention belongs to the technical field of desulfurization towers, and in particular, is a desulfurization tower anti-leakage device and method. The present invention includes an annular member with an opening on the inner side, the annular member is arranged around the outer periphery of the weld of the desulfurization tower, and the annular member and the outer wall of the desulfurization tower form a closed hollow structure, and the annular member is connected to an external water pipe through a connecting pipe. The present invention collects the leakage points of the annular weld of the desulfurization tower in all directions into one outlet, and can drain the flow to determine whether there is a leak. At the same time, the leaked medium is blocked by injecting water into the annular member, which can not only prevent the leaked medium from flowing out along the tower wall to pollute the environment, but also can quickly discover the leakage and take anti-leakage measures in time.

Description

Technical Field

[0001] The invention belongs to the field of desulfurization towers, and in particular relates to a desulfurization tower anti-leakage device and method. Background Art

[0002] The desulfurization tower is an important device for boiler flue gas treatment. The tower body is generally a steel-lined glass cement flake structure, which is built by welding annular steel plates in circles. Due to the defects in the welding quality of the tower welds and the anti-corrosion quality of the welds, and the fact that the medium in the tower is an extremely corrosive ammonium sulfate solution, which mainly exists in the lower area of ​​the tower, the welds in the lower area of ​​the desulfurization tower often leak. And because the leaking medium is highly corrosive, the leak will expand rapidly, causing the medium in the tower to leak along the outer tower wall (the leak point is generally two or three meters away from the bottom of the tower), polluting the environment. At the same time, because the high temperature in the tower will affect the stability of the glass cement flakes, and the medium is under pressure during leakage, it is impossible to weld and repair the leak directly on the cylinder, and the diameter of the desulfurization tower body is too large, and it is impossible to install a clamp at the leak point for online plugging. Therefore, there is no better way to deal with the leakage at the weld of the desulfurization tower. Summary of the invention

[0003] In order to overcome the defects in the prior art, the present invention provides a desulfurization tower anti-leakage device, which has the advantages of preventing environmental pollution and being able to plug leaks online.

[0004] To achieve one of the above purposes, the present invention adopts the following technical solution:

[0005] A desulfurization tower anti-leakage device comprises an annular member with an opening on the inner side, the annular member is arranged around the outer periphery of the weld of the desulfurization tower, and the annular member and the outer wall of the desulfurization tower form a closed hollow structure, the annular member is connected to a connecting pipe, and the connecting pipe is connected to an external water pipe for injecting water into the annular member.

[0006] Preferably, the annular member is in a "C" shape or the annular member and the outer wall of the desulfurization tower form a hollow square structure.

[0007] Preferably, the connecting pipe is a transparent pipe.

[0008] Preferably, the connecting pipe is arranged horizontally and placed at the bottom of the outer side wall of the annular member.

[0009] The second object of the present invention is to provide a desulfurization tower leakage prevention method, comprising the following steps:

[0010] S1. Fix the annular member around the outer periphery of the weld of the desulfurization tower;

[0011] S2. Weld a connecting pipe at the bottom of the outer side wall of the annular member;

[0012] S3. When the weld of the desulfurization tower leaks, the medium in the desulfurization tower flows out through the connecting pipe. At this time, the external water pipe is connected to the connecting pipe so that the external water pipe injects water into the annular member through the connecting pipe, and the water pressure of the external water pipe is greater than the flow pressure of the medium flowing out of the weld.

[0013] The advantages of the present invention are:

[0014] (1) The present invention provides a device and method for preventing desulfurization tower leakage. Specifically, an annular member is used to collect leakage points in all directions of the annular weld of the desulfurization tower to one outlet, and the leakage is drained through a connecting pipe to determine whether there is a leakage. At the same time, water is injected into the annular member to block the leaked medium. This can not only prevent the leaked medium from continuing to flow out along the wall of the desulfurization tower to pollute the environment, but also quickly discover the leakage and take anti-leakage measures in time.

[0015] (2) The water pressure of the external water pipe of the present invention is greater than the flow pressure of the medium flowing out of the weld, so that the water of the external water pipe can block the medium flowing out of the weld, thereby achieving the purpose of preventing leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention.

[0018] The meanings of the symbols in the figure are as follows:

[0019] 1- desulfurization tower, 2- annular part, 3- connecting pipe, 4- weld. DETAILED DESCRIPTION

[0020] like Figure 1-2 As shown, a desulfurization tower anti-leakage device includes a ring member 2 with an opening on the inner side, the ring member 2 is arranged around the outer periphery of the weld 4 of the desulfurization tower 1, and the ring member 2 and the outer wall of the desulfurization tower 1 form a closed hollow structure, the ring member 2 is connected to the connecting pipe 3, and the connecting pipe 3 is connected to an external water pipe for injecting water into the ring member 2. The water pressure of the external water pipe is greater than the flow pressure of the medium flowing out of the weld 4, so that the water of the external water pipe can block the medium flowing out of the weld 4, thereby achieving the purpose of preventing leakage.

[0021] like Figure 2 The annular member 2 shown is in a "C" shape or the annular member 2 and the outer wall of the desulfurization tower 1 form a hollow square structure, which is convenient for taking anti-leakage measures for a large area of ​​leakage points at one time, reducing the difficulty of construction.

[0022] The connecting pipe 3 is a transparent pipe, which is convenient for judging whether the water filled into the connecting pipe 3 by the external water pipe has flushed the leaked medium back into the annular member 2. It is also possible to judge whether the water pressure is sufficient to flush the medium back into the annular member 2 by touching the connecting pipe 3 with the hand.

[0023] The connecting pipe 3 is arranged horizontally and placed at the bottom of the outer side wall of the annular member 2, so as to quickly find the leakage of the weld 4 and quickly implement anti-leakage measures.

[0024] The present invention also provides a desulfurization tower leakage prevention method, comprising the following steps:

[0025] S1, fixing the ring member 2 around the outer periphery of the weld 4 of the desulfurization tower 1;

[0026] S2, welding a connecting pipe 3 at the bottom of the outer side wall of the ring member 2;

[0027] S3. When the weld 4 of the desulfurization tower 1 leaks, the medium in the desulfurization tower 1 flows out through the connecting pipe 3. At this time, the external water pipe is connected to the connecting pipe 3, so that the external water pipe injects water into the annular member 2 through the connecting pipe 3, and the water pressure of the external water pipe is greater than the flow pressure of the medium flowing out of the weld 4.

[0028] The working process of the device is described in detail below with reference to the accompanying drawings in the embodiments.

[0029] When the weld 4 of the desulfurization tower 1 leaks, the medium (ammonium sulfate) in the desulfurization tower 1 flows into the annular part 2 through the weld 4 and flows out from the connecting pipe 3. The staff can judge whether the weld 4 is leaking. Once a leak occurs, the connecting pipe 3 is connected to the external water pipe. The external water pipe injects water into the annular part 2 of the connecting pipe 3, and the pressure is greater than the pressure of the medium flowing out (which can be judged by the flow direction of the water in the transparent connecting pipe 3 or by touching the connecting pipe 3 with the hand), so that the medium can be flushed back into the annular part 2, and the medium can be prevented from corroding the weld 4, thereby achieving the purpose of preventing leakage. Since the desulfurization tower 1 needs to be injected with water, and the amount of water injected into the desulfurization tower 1 by the external water pipe is much less than the amount of water required by the desulfurization tower 1 itself, the water injection into the desulfurization tower 1 of the present invention will not affect the production of the desulfurization tower 1.

[0030] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A desulfurization tower anti-leakage device, characterized in that: The invention comprises an annular member (2) with an opening on the inner side, the annular member (2) is arranged around the outer periphery of a weld (4) of a desulfurization tower (1), and the annular member (2) and the outer wall of the desulfurization tower (1) form a closed hollow structure, the annular member (2) is connected to a connecting pipe (3), and the connecting pipe (3) is connected to an external water pipe for injecting water into the annular member (2); The annular member (2) is in a "C" shape, or the annular member (2) and the outer wall of the desulfurization tower (1) form a hollow square structure; and the connecting pipe (3) is a transparent pipe.

2. A desulfurization tower anti-leakage device according to claim 1, characterized in that: The connecting pipe (3) is arranged horizontally and is placed at the bottom of the outer side wall of the annular member (2).

3. An application method of the desulfurization tower anti-leakage device according to any one of claims 1 to 2, characterized in that: The steps include: S1. Fixing the annular member (2) around the outer periphery of the weld (4) of the desulfurization tower (1); S2, welding a connecting pipe (3) at the bottom of the outer side wall of the annular member (2); S3. When the weld (4) of the desulfurization tower (1) leaks, the medium in the desulfurization tower (1) flows out through the connecting pipe (3). At this time, the external water pipe is connected to the connecting pipe (3), so that the external water pipe injects water into the annular member (2) through the connecting pipe (3), and the water pressure of the external water pipe is greater than the flow pressure of the medium flowing out of the weld (4).

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