Device for reducing fluctuation of amine liquid circulation volume

Abstract

The utility model relates to the technical field of desulfurization solution treatment devices, and provides a device for reducing fluctuation of amine liquid circulation volume, which comprises a tank body, a purified amine liquid return pipe and a lean amine liquid return pipe arranged at the top of the tank body, a liquid outlet pipe arranged at the lower part of the tank body, and a floating plate floating on the liquid level arranged in the tank body, the floating plate is movably arranged on the purified amine liquid return pipe and the lean amine liquid return pipe in a sleeving mode, a movable gap is reserved between the floating plate and the inner wall of the tank body, the floating plate is provided with a foam breaking device used for breaking foam, the floating plate floating on the liquid level is arranged in the tank body, the foam breaking device is arranged on the floating plate to extrude and break the foam, fluctuation of the amine liquid circulation amount is reduced, and the foam breaking effect is improved. The influence of foam on the absorption of the flue gas by the amine liquid is reduced, and the stable proceeding of the reaction is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization solution treatment devices, in particular to a device for reducing fluctuations in the circulation volume of amine solution. Background Art

[0002] In the process of low-altitude flue gas treatment, organic amine liquid is usually used to absorb sulfur dioxide in the flue gas. The organic amine liquid first enters the desulfurization tower and the desorption tower in sequence from the lean amine storage tank through the amine liquid delivery pump. The desorbed amine liquid is cooled and returned to the tank from the top of the amine liquid storage tank for recycling. However, foaming of the organic amine liquid often occurs, resulting in frequent fluctuations in the circulation volume of the amine liquid from the organic amine liquid storage tank to the desulfurization tower, unstable operation, and affecting the desulfurization efficiency of the system. Utility Model Content

[0003] The utility model aims to provide a device for reducing the fluctuation of the circulation amount of amine liquid, solve the above technical problems, reduce the fluctuation of the circulation amount of amine liquid, reduce the influence of foam on the absorption of flue gas by amine liquid, and ensure the stable progress of the reaction.

[0004] The embodiment of the utility model is realized through the following technical scheme: a device for reducing the fluctuation of the circulation amount of amine liquid, comprising a tank body, a purified amine liquid return pipe and a lean amine liquid return pipe are arranged on the top of the tank body, a liquid outlet pipe is arranged at the lower part of the tank body, a floating plate floating on the liquid surface is arranged in the tank body, the floating plate is movably sleeved on the purified amine liquid return pipe and the lean amine liquid return pipe, a movable gap is left between the floating plate and the inner wall of the tank body, and a bubble breaker for puncturing foam is arranged on the floating plate.

[0005] Furthermore, the ends of the purified amine liquid return pipe and the lean amine liquid return pipe extend to the inner wall of the tank bottom, and the ports of the purified amine liquid return pipe and the lean amine liquid return pipe are arranged in a direction away from the liquid outlet pipe.

[0006] Furthermore, the bubble breaker comprises a circular ring seat and fine needles, the circular ring seat is coaxially arranged with the floating plate, and the fine needles are arranged on the surface of the circular ring seat and extend outward in different directions.

[0007] Preferably, the annular seat is a hollow thin-walled structure.

[0008] Preferably, the circular ring seat and the fine needle are integrally formed of plastic material.

[0009] Furthermore, the ends of the purified amine liquid return pipe and the lean amine liquid return pipe are arranged as oblique openings or curved pipes.

[0010] Furthermore, the purified amine liquid return pipe and the lean amine liquid return pipe are arranged alternately in a direction away from the liquid outlet pipe.

[0011] The utility model has at least the following advantages and beneficial effects: by arranging a floating plate floating on the liquid surface in the tank body, and arranging a bubble breaker on the floating plate to squeeze and puncture the foam, the fluctuation of the circulation amount of the amine liquid is reduced, the influence of the foam on the amine liquid absorbing the flue gas is reduced, and the stable progress of the reaction is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 A schematic diagram of the structure of a device for reducing fluctuations in the circulation volume of amine liquid provided by the utility model;

[0014] Figure 2 A top view of a floating plate in a device for reducing fluctuations in the circulation volume of amine liquid provided by the utility model;

[0015] Icons: 1-tank body, 11-purified amine liquid return pipe, 12-lean amine liquid return pipe, 13-liquid outlet pipe, 2-floating plate, 3-bubble breaker, 31-ring seat, 32-fine needle. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Example

[0019] like Figure 1-2As shown, in this embodiment, a device for reducing the fluctuation of the circulation amount of amine liquid is mainly disclosed, including a tank body 1, a purified amine liquid return pipe 11 and a lean amine liquid return pipe 12 are arranged on the top of the tank body 1, a liquid outlet pipe 13 is arranged at the bottom of the tank body 1, a floating plate 2 floating on the liquid surface is arranged in the tank body 1, the floating plate 2 is movably sleeved on the purified amine liquid return pipe 11 and the lean amine liquid return pipe 12, a movable gap is left between the floating plate 2 and the inner wall of the tank body 1, and a bubble breaker 3 for piercing the foam is arranged on the floating plate 2. It should be noted that the amine liquid itself is oxidized and degraded or shaken. The shaking and stirring changes the physical and chemical properties of the solution and increases the foaming tendency of the amine solution. The generated foam will float on the liquid surface. The setting of the floating plate 2 occupies most of the space on the liquid surface. The generated foam will accumulate in the movable gap and gradually rise. The floating plate 2 collides with the inner wall of the tank body 1 as the liquid surface fluctuates, squeezing out part of the foam, and the remaining foam will further rise under the squeezing effect, so that the bubble breaker 3 further squeezes and punctures the foam, reducing the fluctuation of the circulation amount of the amine solution, reducing the influence of the foam on the absorption of flue gas by the amine solution, and ensuring the stable progress of the reaction.

[0020] Furthermore, in a specific implementation, the ends of the purified amine liquid return pipe 11 and the lean amine liquid return pipe 12 provided in the embodiment of the utility model extend to the bottom inner wall of the tank body 1, and the ports of the purified amine liquid return pipe 11 and the lean amine liquid return pipe 12 are arranged in a direction away from the liquid outlet pipe 13, so that the falling point of the amine liquid entering the tank body 1 is low, thereby reducing the fluctuation of the liquid and the generation of foaming.

[0021] Furthermore, in a specific implementation, the bubble breaker 3 provided in the embodiment of the utility model includes a circular ring seat 31 and a fine needle 32. The circular ring seat 31 is coaxially arranged with the floating plate 2, and the fine needle 32 is arranged on the surface of the circular ring seat 31 and extends outward in different directions, so as to more effectively puncture the foam; specifically, the circular ring seat 31 is a hollow thin-walled structure. When the fine needle 32 transitionally hits the inner wall of the tank body 1, the circular ring seat 31 will be concave inward, which can play a buffering role to a certain extent and reduce the wear on the inner wall of the tank body 1; the circular ring seat 31 and the fine needle 32 are made of plastic material in one piece, which is easy to produce and manufacture. In addition, the circular ring seat 31 can be connected to the floating plate 2 by snapping or welding.

[0022] Furthermore, in specific implementation, the ends of the purified amine liquid return pipe 11 and the lean amine liquid return pipe 12 provided in the embodiment of the utility model are set as oblique openings or curved pipes, and the oblique openings and curved pipes are oriented away from the direction of the liquid outlet pipe 13.

[0023] Furthermore, in specific implementation, the purified amine liquid return pipe 11 and the lean amine liquid return pipe 12 provided in the embodiment of the utility model are staggeredly arranged in a direction away from the liquid outlet pipe 13 to reduce liquid disturbance in the tank body 1 and avoid the generation of foaming.

[0024] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for reducing fluctuations in the circulation volume of amine liquid, comprising a tank body (1), wherein the top of the tank body (1) is provided with a purified amine liquid return pipe (11) and a lean amine liquid return pipe (12), and the bottom of the tank body (1) is provided with a liquid outlet pipe (13), characterized in that: A floating plate (2) floating on the liquid surface is provided in the tank body (1); the floating plate (2) is movably mounted on the purified amine liquid return pipe (11) and the lean amine liquid return pipe (12); a movable gap is left between the floating plate (2) and the inner wall of the tank body (1); and a bubble breaker (3) for piercing bubbles is provided on the floating plate (2).

2. A device for reducing fluctuations in amine liquid circulation according to claim 1, characterized in that: The ends of the purified amine liquid return pipe (11) and the lean amine liquid return pipe (12) extend to the inner wall of the bottom of the tank body (1), and the ports of the purified amine liquid return pipe (11) and the lean amine liquid return pipe (12) are arranged in a direction away from the liquid outlet pipe (13).

3. The device for reducing the fluctuation of amine liquid circulation volume according to claim 1, characterized in that: The bubble breaker (3) comprises a circular ring seat (31) and fine needles (32); the circular ring seat (31) is coaxially arranged with the floating plate (2); and the fine needles (32) are arranged on the surface of the circular ring seat (31) and extend outward in different directions.

4. A device for reducing fluctuations in amine liquid circulation volume as claimed in claim 3, characterized in that: The annular seat (31) is a hollow thin-walled structure.

5. The device for reducing fluctuations in amine liquid circulation volume according to claim 3, characterized in that: The circular ring seat (31) and the fine needle (32) are made of plastic material in one piece.

6. The device for reducing the fluctuation of amine liquid circulation volume according to claim 1, characterized in that: The ends of the purified amine liquid return pipe (11) and the lean amine liquid return pipe (12) are arranged to be inclined or bent.

7. The device for reducing the fluctuation of amine liquid circulation volume according to claim 1, characterized in that: The purified amine liquid return pipe (11) and the lean amine liquid return pipe (12) are arranged alternately in a direction away from the liquid outlet pipe (13).

Images