Wet flue gas desulfurization slurry backflow system
By introducing a backup pump and impact pipe into the wet flue gas desulfurization system, the problem of slurry sedimentation caused by the failure of the agitator in the return water tank was solved, ensuring normal slurry return and stable operation of the desulfurization system.
Patent Information
- Application Number
- CN202520442497.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-14
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-14
AI Technical Summary
In a limestone-gypsum wet flue gas desulfurization system, a malfunction in the agitator of the return water tank prevents the slurry from returning, affecting the normal operation of the desulfurization system.
A wet flue gas desulfurization slurry reflux system was designed, including a standby pump and an impact pipe. When the agitator fails, the standby pump can pump the slurry into the impact pipe for impact, thereby preventing slurry sedimentation and replacing the function of the agitator to ensure normal slurry reflux.
By designing a backup pump and impact pipe, the problem of slurry sedimentation caused by agitator failure was solved, ensuring normal slurry reflux and continuous operation of the desulfurization system.
Smart Images
Figure CN223846640U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to wet flue gas desulfurization system technical field, specifically a kind of wet flue gas desulfurization slurry reflux system. BACKGROUND
[0002] In the process of limestone-gypsum wet flue gas desulfurization system desulfurization, after desulfurization, absorption tower slurry is refluxed into reflux tank, and is returned to absorption tower from reflux tank;Reflex tank is provided with agitator, and slurry is prevented from depositing to cause pipeline blockage by agitator stirring;After the failure of agitator, slurry cannot be refluxed, and reflux tank must be shut down, and agitator is repaired or replaced, which will affect the normal operation of desulfurization system. UTILITY MODEL CONTENT
[0003] The main purpose of the utility model is to provide a kind of wet flue gas desulfurization slurry reflux system, to solve the problem that the agitator of the above-mentioned prior art reflux tank fails, which will cause slurry to be unable to reflux and affect the normal operation of the desulfurization system.
[0004] In order to achieve the above-mentioned purpose, the utility model provides a kind of wet flue gas desulfurization slurry reflux system, including absorption tower, reflux tank, absorption tower is connected with the inlet of first cyclone through slurry discharge pipe, and the top flow port of first cyclone is connected with reflux tank through top flow discharge pipe;Reflex tank is connected with the inlet of reflux pump through pipeline;The outlet of reflux pump is connected with absorption tower through reflux pipe, and the agitator for stirring the slurry inside reflux tank is arranged on reflux tank;Reflex tank is connected with the inlet of standby pump through pipeline, and the outlet of standby pump is connected with reflux pipe through pipeline;Impact pipe is arranged in reflux tank, and the outlet of standby pump is connected with impact pipe through communication pipe.
[0005] Further, the impact pipe includes a main pipe and a plurality of branch pipes connected with the main pipe at the bottom of the reflux tank.
[0006] Further, the bottom flow outlet of the first cyclone is provided with a belt dewatering machine below, and the bottom flow port of the belt dewatering machine is connected with the reflux tank through pipeline.
[0007] Further, the reflux tank is connected with the inlet of circulating water pump through pipeline, the outlet of circulating water pump is connected with second cyclone through circulating pipe, the bottom flow port of second cyclone is connected with reflux tank through pipeline, and the top flow port of second cyclone is connected with waste water discharge pipe;The outlet of standby pump is connected with circulating pipe through pipeline.
[0008] The utility model discloses a spare pump, impact pipe etc. are set up, make spare pump can be used as the spare of other pump, also can after the fault of agitator, the slurry is drawn to the impact pipe, causes the impact to the inside of reflux tank, avoids the slurry deposition, replaces the function of agitator, guarantees the normal reflux of slurry and the normal operation of desulfurization system. BRIEF DESCRIPTION OF DRAWINGS
[0009] The drawings accompanying the specification of this application form a part hereof, serve to provide further understanding of the application, and together with the description of the exemplary embodiments of the application and explanations thereof, serve to explain the application, and do not constitute an improper limitation on the application.
[0010] Figure 1 It is the structural schematic diagram of the example wet flue gas desulfurization slurry reflux system;
[0011] In the drawing: 1, absorption tower;2, reflux tank;3, first cyclone;4, top flow discharge pipe;5, reflux pipe;6, agitator;7, reflux pump;8, spare pump;9, impact pipe;901, main pipe;902, branch pipe;10, liaison pipe;11, circulating water pump;12, circulating pipe;13, second cyclone;14, waste water discharge pipe;15, belt dewaterer. DETAILED DESCRIPTION
[0012] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.
[0013] As Figure 1 shown, according to the embodiments of the present application, a wet flue gas desulfurization slurry reflux system is provided, which comprises an absorption tower 1 and a reflux tank 2. The absorption tower 1 is connected with the inlet of a first cyclone 3 through a slurry discharge pipe. The top flow port of the first cyclone 3 is connected with the reflux tank 2 through a top flow discharge pipe 4. The reflux tank 2 is connected with the inlet of a reflux pump 7 through a pipeline. The outlet of the reflux pump 7 is connected with the absorption tower 1 through a reflux pipe 5. The reflux tank 2 is provided with an agitator 6 for stirring the slurry inside the reflux tank 2. The reflux tank 2 is connected with the inlet of a spare pump 8 through a pipeline. The outlet of the spare pump 8 is connected with the reflux pipe 5 through a pipeline. The reflux tank 2 is provided with an impact pipe 9 extending into the bottom of the reflux tank 2. The outlet of the spare pump 8 is connected with the impact pipe 9 through a liaison pipe 10.
[0014] The impact pipe 9 comprises a main pipe 901 and a plurality of branch pipes 902 connected with the main pipe 901 at the bottom of the reflux tank 2.
[0015] The bottom flow outlet of the first cyclone 3 is provided below with a belt dewaterer 15. The bottom flow port of the belt dewaterer 15 is connected with the reflux tank 2 through a pipeline.
[0016] The backflow water tank 2 is connected with the inlet of a circulating water pump 11 through a pipeline, the outlet of the circulating water pump 11 is connected with a second cyclone 13 through a circulating pipeline 12, the bottom flow port of the second cyclone 13 is connected with the backflow water tank 2 through a pipeline, and the top flow port of the second cyclone 13 is connected with a waste water discharge pipeline 14; the outlet of the standby pump 8 is connected with the circulating pipeline 12 through a pipeline.
[0017] The embodiment sets the standby pump 8, the impact pipeline 9 and the like, so that the standby pump 8 can not only serve as a standby of the backflow pump 7 and the circulating water pump 11, but also can suck the slurry into the impact pipeline 9 to impact the inside of the backflow water tank 2 after the failure of the stirrer 6, so as to avoid the slurry precipitation and replace the function of the stirrer 6; and the normal backflow of the slurry and the normal operation of the desulfurization system are ensured.
[0018] The above only provides preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement and the like within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A wet flue gas desulfurization slurry backflow system, comprising an absorption tower (1), a backflow tank (2), the absorption tower (1) being connected with an inlet of a first cyclone (3) through a slurry discharge pipe, a top flow outlet of the first cyclone (3) being connected with the backflow tank (2) through a top flow discharge pipe (4); the backflow tank (2) being connected with an inlet of a backflow pump (7) through a pipeline; an outlet of the backflow pump (7) being connected with the absorption tower (1) through a backflow pipe (5), a stirrer (6) for stirring the slurry inside the backflow tank (2) being arranged on the backflow tank (2); the backflow tank (2) being connected with an inlet of a standby pump (8) through a pipeline, an outlet of the standby pump (8) being connected with the backflow pipe (5) through a pipeline; characterized in that, The backflow tank (2) is provided with an impact pipe (9) extending into the bottom of the backflow tank (2), and the outlet of the standby pump (8) is connected with the impact pipe (9) through a connecting pipe (10).
2. The wet flue gas desulfurization slurry return system of claim 1, wherein, The impact pipe (9) comprises a main pipe (901) and a plurality of branch pipes (902) connected with the main pipe (901) at the bottom of the backflow tank (2).
3. The wet flue gas desulfurization slurry return system of claim 1, wherein, A belt dewaterer (15) is arranged below the underflow outlet of the first cyclone (3), and the underflow outlet of the belt dewaterer (15) is connected with the backflow tank (2) through a pipeline.
4. The wet flue gas desulfurization slurry return system of claim 1, wherein, The backflow tank (2) is connected with the inlet of a circulating water pump (11) through a pipeline, the outlet of the circulating water pump (11) is connected with a second cyclone (13) through a circulating pipe (12), the underflow outlet of the second cyclone (13) is connected with the backflow tank (2) through a pipeline, the top flow outlet of the second cyclone (13) is connected with a waste water discharge pipe (14), and the outlet of the standby pump (8) is connected with the circulating pipe (12) through a pipeline.